Add service provider auctions (#59)

Part of [Service provider auctions](https://www.notion.so/Service-provider-auctions-a7b63697d818479493ec145ea6ea3c1c)

- Add a new type of auction for service providers
  - Add a command to release provider auction funds
- Remove unused auction module params

Co-authored-by: IshaVenikar <ishavenikar7@gmail.com>
Co-authored-by: Isha Venikar <ishavenikar@Ishas-MacBook-Air.local>
Reviewed-on: #59
Co-authored-by: Prathamesh Musale <prathamesh.musale0@gmail.com>
Co-committed-by: Prathamesh Musale <prathamesh.musale0@gmail.com>

.gitea/workflows/test-sdk-authority-auction.yml

@@ -7,7 +7,7 @@ on:
       - release/**
 
 jobs:
-  sdk_tests_auctions:
+  sdk_tests_authority_auctions:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
@@ -35,6 +35,6 @@ jobs:
           TEST_AUCTION_ENABLED: true
         run: docker compose up -d
 
-      - name: Run auction tests
+      - name: Run authority auction tests
         working-directory: tests/sdk_tests
-        run: ./run-tests.sh test:auctions
+        run: ./run-tests.sh test:authority-auctions

api/cerc/auction/v1/tx_grpc.pb.go

@@ -23,6 +23,7 @@ const (
 	Msg_CommitBid_FullMethodName     = "/cerc.auction.v1.Msg/CommitBid"
 	Msg_RevealBid_FullMethodName     = "/cerc.auction.v1.Msg/RevealBid"
 	Msg_UpdateParams_FullMethodName  = "/cerc.auction.v1.Msg/UpdateParams"
+	Msg_ReleaseFunds_FullMethodName  = "/cerc.auction.v1.Msg/ReleaseFunds"
 )
 
 // MsgClient is the client API for Msg service.
@@ -38,6 +39,8 @@ type MsgClient interface {
 	// UpdateParams defines an operation for updating the x/staking module
 	// parameters.
 	UpdateParams(ctx context.Context, in *MsgUpdateParams, opts ...grpc.CallOption) (*MsgUpdateParamsResponse, error)
+	// ReleaseFunds is the command for paying the winners of provider auctions
+	ReleaseFunds(ctx context.Context, in *MsgReleaseFunds, opts ...grpc.CallOption) (*MsgReleaseFundsResponse, error)
 }
 
 type msgClient struct {
@@ -84,6 +87,15 @@ func (c *msgClient) UpdateParams(ctx context.Context, in *MsgUpdateParams, opts
 	return out, nil
 }
 
+func (c *msgClient) ReleaseFunds(ctx context.Context, in *MsgReleaseFunds, opts ...grpc.CallOption) (*MsgReleaseFundsResponse, error) {
+	out := new(MsgReleaseFundsResponse)
+	err := c.cc.Invoke(ctx, Msg_ReleaseFunds_FullMethodName, in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 // MsgServer is the server API for Msg service.
 // All implementations must embed UnimplementedMsgServer
 // for forward compatibility
@@ -97,6 +109,8 @@ type MsgServer interface {
 	// UpdateParams defines an operation for updating the x/staking module
 	// parameters.
 	UpdateParams(context.Context, *MsgUpdateParams) (*MsgUpdateParamsResponse, error)
+	// ReleaseFunds is the command for paying the winners of provider auctions
+	ReleaseFunds(context.Context, *MsgReleaseFunds) (*MsgReleaseFundsResponse, error)
 	mustEmbedUnimplementedMsgServer()
 }
 
@@ -116,6 +130,9 @@ func (UnimplementedMsgServer) RevealBid(context.Context, *MsgRevealBid) (*MsgRev
 func (UnimplementedMsgServer) UpdateParams(context.Context, *MsgUpdateParams) (*MsgUpdateParamsResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method UpdateParams not implemented")
 }
+func (UnimplementedMsgServer) ReleaseFunds(context.Context, *MsgReleaseFunds) (*MsgReleaseFundsResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method ReleaseFunds not implemented")
+}
 func (UnimplementedMsgServer) mustEmbedUnimplementedMsgServer() {}
 
 // UnsafeMsgServer may be embedded to opt out of forward compatibility for this service.
@@ -201,6 +218,24 @@ func _Msg_UpdateParams_Handler(srv interface{}, ctx context.Context, dec func(in
 	return interceptor(ctx, in, info, handler)
 }
 
+func _Msg_ReleaseFunds_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(MsgReleaseFunds)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(MsgServer).ReleaseFunds(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: Msg_ReleaseFunds_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(MsgServer).ReleaseFunds(ctx, req.(*MsgReleaseFunds))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 // Msg_ServiceDesc is the grpc.ServiceDesc for Msg service.
 // It's only intended for direct use with grpc.RegisterService,
 // and not to be introspected or modified (even as a copy)
@@ -224,6 +259,10 @@ var Msg_ServiceDesc = grpc.ServiceDesc{
 			MethodName: "UpdateParams",
 			Handler:    _Msg_UpdateParams_Handler,
 		},
+		{
+			MethodName: "ReleaseFunds",
+			Handler:    _Msg_ReleaseFunds_Handler,
+		},
 	},
 	Streams:  []grpc.StreamDesc{},
 	Metadata: "cerc/auction/v1/tx.proto",

cmd/laconicd/cmd/root.go

@@ -1,6 +1,7 @@
 package cmd
 
 import (
+	"fmt"
 	"os"
 	"time"
 
@@ -20,6 +21,7 @@ import (
 	"github.com/cosmos/cosmos-sdk/crypto/keyring"
 	"github.com/cosmos/cosmos-sdk/server"
 	serverconfig "github.com/cosmos/cosmos-sdk/server/config"
+	sdk "github.com/cosmos/cosmos-sdk/types"
 	"github.com/cosmos/cosmos-sdk/types/module"
 	"github.com/cosmos/cosmos-sdk/types/tx/signing"
 	"github.com/cosmos/cosmos-sdk/x/auth/tx"
@@ -98,7 +100,7 @@ func NewRootCmd() *cobra.Command {
 
 			// overwrite the minimum gas price from the app configuration
 			srvCfg := serverconfig.DefaultConfig()
-			srvCfg.MinGasPrices = "0alnt"
+			srvCfg.MinGasPrices = fmt.Sprintf("0%s", sdk.DefaultBondDenom)
 
 			// overwrite the block timeout
 			cmtCfg := cmtcfg.DefaultConfig()

gql/README.md

@@ -1,6 +1,6 @@
 # cerc-io laconic gql
 
-> Browser : http://localhost:9473 for gql
+> Browser : <http://localhost:9473> for gql
 
 ## Run gqlgen
 
@@ -13,7 +13,7 @@ On having some change in the GQL schema (for example: adding a new query) update
   go get github.com/99designs/gqlgen@v0.17.22
 
   # Generate bindings
-  # In gql
+  cd gql
   go run github.com/99designs/gqlgen generate
   ```
 

gql/cerc-io/laconicd/schema.graphql

@@ -168,10 +168,14 @@ type Auction {
   commitFee: Coin! # Fee required to bid/participate in the auction.
   revealFee: Coin! # Reveal fee (paid back to bidders only if they unseal/reveal the bid).
   minimumBid: Coin! # Minimum bid amount.
-  winnerAddress: String! # Winner address.
+  winnerAddresses: [String!]! # Winner address.
-  winnerBid: Coin! # The winning bid amount.
+  winnerBids: [Coin!]! # The winning bid amount.
   winnerPrice: Coin! # The price that the winner actually pays (2nd highest bid).
-  bids: [AuctionBid] # Bids make in the auction.
+  maxPrice: Coin! # Max bid amount for service provider auction.
+  kind: String! # Auction kind.
+  numProviders: Int # Number of service providers
+  fundsReleased: Boolean! # Whether funds have been released to providers
+  bids: [AuctionBid!]! # Bids made in the auction.
 }
 
 # Record defines the basic properties of an entity in the graph database.

gql/generated.go

@@ -65,14 +65,18 @@ type ComplexityRoot struct {
 		CommitFee       func(childComplexity int) int
 		CommitsEndTime  func(childComplexity int) int
 		CreateTime      func(childComplexity int) int
+		FundsReleased   func(childComplexity int) int
 		ID              func(childComplexity int) int
+		Kind            func(childComplexity int) int
+		MaxPrice        func(childComplexity int) int
 		MinimumBid      func(childComplexity int) int
+		NumProviders    func(childComplexity int) int
 		OwnerAddress    func(childComplexity int) int
 		RevealFee       func(childComplexity int) int
 		RevealsEndTime  func(childComplexity int) int
 		Status          func(childComplexity int) int
-		WinnerAddress  func(childComplexity int) int
+		WinnerAddresses func(childComplexity int) int
-		WinnerBid      func(childComplexity int) int
+		WinnerBids      func(childComplexity int) int
 		WinnerPrice     func(childComplexity int) int
 	}
 
@@ -346,6 +350,13 @@ func (e *executableSchema) Complexity(typeName, field string, childComplexity in
 
 		return e.complexity.Auction.CreateTime(childComplexity), true
 
+	case "Auction.fundsReleased":
+		if e.complexity.Auction.FundsReleased == nil {
+			break
+		}
+
+		return e.complexity.Auction.FundsReleased(childComplexity), true
+
 	case "Auction.id":
 		if e.complexity.Auction.ID == nil {
 			break
@@ -353,6 +364,20 @@ func (e *executableSchema) Complexity(typeName, field string, childComplexity in
 
 		return e.complexity.Auction.ID(childComplexity), true
 
+	case "Auction.kind":
+		if e.complexity.Auction.Kind == nil {
+			break
+		}
+
+		return e.complexity.Auction.Kind(childComplexity), true
+
+	case "Auction.maxPrice":
+		if e.complexity.Auction.MaxPrice == nil {
+			break
+		}
+
+		return e.complexity.Auction.MaxPrice(childComplexity), true
+
 	case "Auction.minimumBid":
 		if e.complexity.Auction.MinimumBid == nil {
 			break
@@ -360,6 +385,13 @@ func (e *executableSchema) Complexity(typeName, field string, childComplexity in
 
 		return e.complexity.Auction.MinimumBid(childComplexity), true
 
+	case "Auction.numProviders":
+		if e.complexity.Auction.NumProviders == nil {
+			break
+		}
+
+		return e.complexity.Auction.NumProviders(childComplexity), true
+
 	case "Auction.ownerAddress":
 		if e.complexity.Auction.OwnerAddress == nil {
 			break
@@ -388,19 +420,19 @@ func (e *executableSchema) Complexity(typeName, field string, childComplexity in
 
 		return e.complexity.Auction.Status(childComplexity), true
 
-	case "Auction.winnerAddress":
+	case "Auction.winnerAddresses":
-		if e.complexity.Auction.WinnerAddress == nil {
+		if e.complexity.Auction.WinnerAddresses == nil {
 			break
 		}
 
-		return e.complexity.Auction.WinnerAddress(childComplexity), true
+		return e.complexity.Auction.WinnerAddresses(childComplexity), true
 
-	case "Auction.winnerBid":
+	case "Auction.winnerBids":
-		if e.complexity.Auction.WinnerBid == nil {
+		if e.complexity.Auction.WinnerBids == nil {
 			break
 		}
 
-		return e.complexity.Auction.WinnerBid(childComplexity), true
+		return e.complexity.Auction.WinnerBids(childComplexity), true
 
 	case "Auction.winnerPrice":
 		if e.complexity.Auction.WinnerPrice == nil {
@@ -2147,8 +2179,8 @@ func (ec *executionContext) fieldContext_Auction_minimumBid(ctx context.Context,
 	return fc, nil
 }
 
-func (ec *executionContext) _Auction_winnerAddress(ctx context.Context, field graphql.CollectedField, obj *Auction) (ret graphql.Marshaler) {
+func (ec *executionContext) _Auction_winnerAddresses(ctx context.Context, field graphql.CollectedField, obj *Auction) (ret graphql.Marshaler) {
-	fc, err := ec.fieldContext_Auction_winnerAddress(ctx, field)
+	fc, err := ec.fieldContext_Auction_winnerAddresses(ctx, field)
 	if err != nil {
 		return graphql.Null
 	}
@@ -2161,7 +2193,7 @@ func (ec *executionContext) _Auction_winnerAddress(ctx context.Context, field gr
 	}()
 	resTmp, err := ec.ResolverMiddleware(ctx, func(rctx context.Context) (interface{}, error) {
 		ctx = rctx // use context from middleware stack in children
-		return obj.WinnerAddress, nil
+		return obj.WinnerAddresses, nil
 	})
 	if err != nil {
 		ec.Error(ctx, err)
@@ -2173,12 +2205,12 @@ func (ec *executionContext) _Auction_winnerAddress(ctx context.Context, field gr
 		}
 		return graphql.Null
 	}
-	res := resTmp.(string)
+	res := resTmp.([]string)
 	fc.Result = res
-	return ec.marshalNString2string(ctx, field.Selections, res)
+	return ec.marshalNString2ᚕstringᚄ(ctx, field.Selections, res)
 }
 
-func (ec *executionContext) fieldContext_Auction_winnerAddress(ctx context.Context, field graphql.CollectedField) (fc *graphql.FieldContext, err error) {
+func (ec *executionContext) fieldContext_Auction_winnerAddresses(ctx context.Context, field graphql.CollectedField) (fc *graphql.FieldContext, err error) {
 	fc = &graphql.FieldContext{
 		Object:     "Auction",
 		Field:      field,
@@ -2191,8 +2223,8 @@ func (ec *executionContext) fieldContext_Auction_winnerAddress(ctx context.Conte
 	return fc, nil
 }
 
-func (ec *executionContext) _Auction_winnerBid(ctx context.Context, field graphql.CollectedField, obj *Auction) (ret graphql.Marshaler) {
+func (ec *executionContext) _Auction_winnerBids(ctx context.Context, field graphql.CollectedField, obj *Auction) (ret graphql.Marshaler) {
-	fc, err := ec.fieldContext_Auction_winnerBid(ctx, field)
+	fc, err := ec.fieldContext_Auction_winnerBids(ctx, field)
 	if err != nil {
 		return graphql.Null
 	}
@@ -2205,7 +2237,7 @@ func (ec *executionContext) _Auction_winnerBid(ctx context.Context, field graphq
 	}()
 	resTmp, err := ec.ResolverMiddleware(ctx, func(rctx context.Context) (interface{}, error) {
 		ctx = rctx // use context from middleware stack in children
-		return obj.WinnerBid, nil
+		return obj.WinnerBids, nil
 	})
 	if err != nil {
 		ec.Error(ctx, err)
@@ -2217,12 +2249,12 @@ func (ec *executionContext) _Auction_winnerBid(ctx context.Context, field graphq
 		}
 		return graphql.Null
 	}
-	res := resTmp.(*Coin)
+	res := resTmp.([]*Coin)
 	fc.Result = res
-	return ec.marshalNCoin2ᚖgitᚗvdbᚗtoᚋcercᚑioᚋlaconicdᚋgqlᚐCoin(ctx, field.Selections, res)
+	return ec.marshalNCoin2ᚕᚖgitᚗvdbᚗtoᚋcercᚑioᚋlaconicdᚋgqlᚐCoinᚄ(ctx, field.Selections, res)
 }
 
-func (ec *executionContext) fieldContext_Auction_winnerBid(ctx context.Context, field graphql.CollectedField) (fc *graphql.FieldContext, err error) {
+func (ec *executionContext) fieldContext_Auction_winnerBids(ctx context.Context, field graphql.CollectedField) (fc *graphql.FieldContext, err error) {
 	fc = &graphql.FieldContext{
 		Object:     "Auction",
 		Field:      field,
@@ -2291,6 +2323,185 @@ func (ec *executionContext) fieldContext_Auction_winnerPrice(ctx context.Context
 	return fc, nil
 }
 
+func (ec *executionContext) _Auction_maxPrice(ctx context.Context, field graphql.CollectedField, obj *Auction) (ret graphql.Marshaler) {
+	fc, err := ec.fieldContext_Auction_maxPrice(ctx, field)
+	if err != nil {
+		return graphql.Null
+	}
+	ctx = graphql.WithFieldContext(ctx, fc)
+	defer func() {
+		if r := recover(); r != nil {
+			ec.Error(ctx, ec.Recover(ctx, r))
+			ret = graphql.Null
+		}
+	}()
+	resTmp, err := ec.ResolverMiddleware(ctx, func(rctx context.Context) (interface{}, error) {
+		ctx = rctx // use context from middleware stack in children
+		return obj.MaxPrice, nil
+	})
+	if err != nil {
+		ec.Error(ctx, err)
+		return graphql.Null
+	}
+	if resTmp == nil {
+		if !graphql.HasFieldError(ctx, fc) {
+			ec.Errorf(ctx, "must not be null")
+		}
+		return graphql.Null
+	}
+	res := resTmp.(*Coin)
+	fc.Result = res
+	return ec.marshalNCoin2ᚖgitᚗvdbᚗtoᚋcercᚑioᚋlaconicdᚋgqlᚐCoin(ctx, field.Selections, res)
+}
+
+func (ec *executionContext) fieldContext_Auction_maxPrice(ctx context.Context, field graphql.CollectedField) (fc *graphql.FieldContext, err error) {
+	fc = &graphql.FieldContext{
+		Object:     "Auction",
+		Field:      field,
+		IsMethod:   false,
+		IsResolver: false,
+		Child: func(ctx context.Context, field graphql.CollectedField) (*graphql.FieldContext, error) {
+			switch field.Name {
+			case "type":
+				return ec.fieldContext_Coin_type(ctx, field)
+			case "quantity":
+				return ec.fieldContext_Coin_quantity(ctx, field)
+			}
+			return nil, fmt.Errorf("no field named %q was found under type Coin", field.Name)
+		},
+	}
+	return fc, nil
+}
+
+func (ec *executionContext) _Auction_kind(ctx context.Context, field graphql.CollectedField, obj *Auction) (ret graphql.Marshaler) {
+	fc, err := ec.fieldContext_Auction_kind(ctx, field)
+	if err != nil {
+		return graphql.Null
+	}
+	ctx = graphql.WithFieldContext(ctx, fc)
+	defer func() {
+		if r := recover(); r != nil {
+			ec.Error(ctx, ec.Recover(ctx, r))
+			ret = graphql.Null
+		}
+	}()
+	resTmp, err := ec.ResolverMiddleware(ctx, func(rctx context.Context) (interface{}, error) {
+		ctx = rctx // use context from middleware stack in children
+		return obj.Kind, nil
+	})
+	if err != nil {
+		ec.Error(ctx, err)
+		return graphql.Null
+	}
+	if resTmp == nil {
+		if !graphql.HasFieldError(ctx, fc) {
+			ec.Errorf(ctx, "must not be null")
+		}
+		return graphql.Null
+	}
+	res := resTmp.(string)
+	fc.Result = res
+	return ec.marshalNString2string(ctx, field.Selections, res)
+}
+
+func (ec *executionContext) fieldContext_Auction_kind(ctx context.Context, field graphql.CollectedField) (fc *graphql.FieldContext, err error) {
+	fc = &graphql.FieldContext{
+		Object:     "Auction",
+		Field:      field,
+		IsMethod:   false,
+		IsResolver: false,
+		Child: func(ctx context.Context, field graphql.CollectedField) (*graphql.FieldContext, error) {
+			return nil, errors.New("field of type String does not have child fields")
+		},
+	}
+	return fc, nil
+}
+
+func (ec *executionContext) _Auction_numProviders(ctx context.Context, field graphql.CollectedField, obj *Auction) (ret graphql.Marshaler) {
+	fc, err := ec.fieldContext_Auction_numProviders(ctx, field)
+	if err != nil {
+		return graphql.Null
+	}
+	ctx = graphql.WithFieldContext(ctx, fc)
+	defer func() {
+		if r := recover(); r != nil {
+			ec.Error(ctx, ec.Recover(ctx, r))
+			ret = graphql.Null
+		}
+	}()
+	resTmp, err := ec.ResolverMiddleware(ctx, func(rctx context.Context) (interface{}, error) {
+		ctx = rctx // use context from middleware stack in children
+		return obj.NumProviders, nil
+	})
+	if err != nil {
+		ec.Error(ctx, err)
+		return graphql.Null
+	}
+	if resTmp == nil {
+		return graphql.Null
+	}
+	res := resTmp.(*int)
+	fc.Result = res
+	return ec.marshalOInt2ᚖint(ctx, field.Selections, res)
+}
+
+func (ec *executionContext) fieldContext_Auction_numProviders(ctx context.Context, field graphql.CollectedField) (fc *graphql.FieldContext, err error) {
+	fc = &graphql.FieldContext{
+		Object:     "Auction",
+		Field:      field,
+		IsMethod:   false,
+		IsResolver: false,
+		Child: func(ctx context.Context, field graphql.CollectedField) (*graphql.FieldContext, error) {
+			return nil, errors.New("field of type Int does not have child fields")
+		},
+	}
+	return fc, nil
+}
+
+func (ec *executionContext) _Auction_fundsReleased(ctx context.Context, field graphql.CollectedField, obj *Auction) (ret graphql.Marshaler) {
+	fc, err := ec.fieldContext_Auction_fundsReleased(ctx, field)
+	if err != nil {
+		return graphql.Null
+	}
+	ctx = graphql.WithFieldContext(ctx, fc)
+	defer func() {
+		if r := recover(); r != nil {
+			ec.Error(ctx, ec.Recover(ctx, r))
+			ret = graphql.Null
+		}
+	}()
+	resTmp, err := ec.ResolverMiddleware(ctx, func(rctx context.Context) (interface{}, error) {
+		ctx = rctx // use context from middleware stack in children
+		return obj.FundsReleased, nil
+	})
+	if err != nil {
+		ec.Error(ctx, err)
+		return graphql.Null
+	}
+	if resTmp == nil {
+		if !graphql.HasFieldError(ctx, fc) {
+			ec.Errorf(ctx, "must not be null")
+		}
+		return graphql.Null
+	}
+	res := resTmp.(bool)
+	fc.Result = res
+	return ec.marshalNBoolean2bool(ctx, field.Selections, res)
+}
+
+func (ec *executionContext) fieldContext_Auction_fundsReleased(ctx context.Context, field graphql.CollectedField) (fc *graphql.FieldContext, err error) {
+	fc = &graphql.FieldContext{
+		Object:     "Auction",
+		Field:      field,
+		IsMethod:   false,
+		IsResolver: false,
+		Child: func(ctx context.Context, field graphql.CollectedField) (*graphql.FieldContext, error) {
+			return nil, errors.New("field of type Boolean does not have child fields")
+		},
+	}
+	return fc, nil
+}
+
 func (ec *executionContext) _Auction_bids(ctx context.Context, field graphql.CollectedField, obj *Auction) (ret graphql.Marshaler) {
 	fc, err := ec.fieldContext_Auction_bids(ctx, field)
 	if err != nil {
@@ -2312,11 +2523,14 @@ func (ec *executionContext) _Auction_bids(ctx context.Context, field graphql.Col
 		return graphql.Null
 	}
 	if resTmp == nil {
+		if !graphql.HasFieldError(ctx, fc) {
+			ec.Errorf(ctx, "must not be null")
+		}
 		return graphql.Null
 	}
 	res := resTmp.([]*AuctionBid)
 	fc.Result = res
-	return ec.marshalOAuctionBid2ᚕᚖgitᚗvdbᚗtoᚋcercᚑioᚋlaconicdᚋgqlᚐAuctionBid(ctx, field.Selections, res)
+	return ec.marshalNAuctionBid2ᚕᚖgitᚗvdbᚗtoᚋcercᚑioᚋlaconicdᚋgqlᚐAuctionBidᚄ(ctx, field.Selections, res)
 }
 
 func (ec *executionContext) fieldContext_Auction_bids(ctx context.Context, field graphql.CollectedField) (fc *graphql.FieldContext, err error) {
@@ -3142,12 +3356,20 @@ func (ec *executionContext) fieldContext_AuthorityRecord_auction(ctx context.Con
 				return ec.fieldContext_Auction_revealFee(ctx, field)
 			case "minimumBid":
 				return ec.fieldContext_Auction_minimumBid(ctx, field)
-			case "winnerAddress":
+			case "winnerAddresses":
-				return ec.fieldContext_Auction_winnerAddress(ctx, field)
+				return ec.fieldContext_Auction_winnerAddresses(ctx, field)
-			case "winnerBid":
+			case "winnerBids":
-				return ec.fieldContext_Auction_winnerBid(ctx, field)
+				return ec.fieldContext_Auction_winnerBids(ctx, field)
 			case "winnerPrice":
 				return ec.fieldContext_Auction_winnerPrice(ctx, field)
+			case "maxPrice":
+				return ec.fieldContext_Auction_maxPrice(ctx, field)
+			case "kind":
+				return ec.fieldContext_Auction_kind(ctx, field)
+			case "numProviders":
+				return ec.fieldContext_Auction_numProviders(ctx, field)
+			case "fundsReleased":
+				return ec.fieldContext_Auction_fundsReleased(ctx, field)
 			case "bids":
 				return ec.fieldContext_Auction_bids(ctx, field)
 			}
@@ -5129,12 +5351,20 @@ func (ec *executionContext) fieldContext_Query_getAuctionsByIds(ctx context.Cont
 				return ec.fieldContext_Auction_revealFee(ctx, field)
 			case "minimumBid":
 				return ec.fieldContext_Auction_minimumBid(ctx, field)
-			case "winnerAddress":
+			case "winnerAddresses":
-				return ec.fieldContext_Auction_winnerAddress(ctx, field)
+				return ec.fieldContext_Auction_winnerAddresses(ctx, field)
-			case "winnerBid":
+			case "winnerBids":
-				return ec.fieldContext_Auction_winnerBid(ctx, field)
+				return ec.fieldContext_Auction_winnerBids(ctx, field)
 			case "winnerPrice":
 				return ec.fieldContext_Auction_winnerPrice(ctx, field)
+			case "maxPrice":
+				return ec.fieldContext_Auction_maxPrice(ctx, field)
+			case "kind":
+				return ec.fieldContext_Auction_kind(ctx, field)
+			case "numProviders":
+				return ec.fieldContext_Auction_numProviders(ctx, field)
+			case "fundsReleased":
+				return ec.fieldContext_Auction_fundsReleased(ctx, field)
 			case "bids":
 				return ec.fieldContext_Auction_bids(ctx, field)
 			}
@@ -8710,16 +8940,16 @@ func (ec *executionContext) _Auction(ctx context.Context, sel ast.SelectionSet,
 			if out.Values[i] == graphql.Null {
 				invalids++
 			}
-		case "winnerAddress":
+		case "winnerAddresses":
 
-			out.Values[i] = ec._Auction_winnerAddress(ctx, field, obj)
+			out.Values[i] = ec._Auction_winnerAddresses(ctx, field, obj)
 
 			if out.Values[i] == graphql.Null {
 				invalids++
 			}
-		case "winnerBid":
+		case "winnerBids":
 
-			out.Values[i] = ec._Auction_winnerBid(ctx, field, obj)
+			out.Values[i] = ec._Auction_winnerBids(ctx, field, obj)
 
 			if out.Values[i] == graphql.Null {
 				invalids++
@@ -8728,6 +8958,31 @@ func (ec *executionContext) _Auction(ctx context.Context, sel ast.SelectionSet,
 
 			out.Values[i] = ec._Auction_winnerPrice(ctx, field, obj)
 
+			if out.Values[i] == graphql.Null {
+				invalids++
+			}
+		case "maxPrice":
+
+			out.Values[i] = ec._Auction_maxPrice(ctx, field, obj)
+
+			if out.Values[i] == graphql.Null {
+				invalids++
+			}
+		case "kind":
+
+			out.Values[i] = ec._Auction_kind(ctx, field, obj)
+
+			if out.Values[i] == graphql.Null {
+				invalids++
+			}
+		case "numProviders":
+
+			out.Values[i] = ec._Auction_numProviders(ctx, field, obj)
+
+		case "fundsReleased":
+
+			out.Values[i] = ec._Auction_fundsReleased(ctx, field, obj)
+
 			if out.Values[i] == graphql.Null {
 				invalids++
 			}
@@ -8735,6 +8990,9 @@ func (ec *executionContext) _Auction(ctx context.Context, sel ast.SelectionSet,
 
 			out.Values[i] = ec._Auction_bids(ctx, field, obj)
 
+			if out.Values[i] == graphql.Null {
+				invalids++
+			}
 		default:
 			panic("unknown field " + strconv.Quote(field.Name))
 		}
@@ -10389,6 +10647,60 @@ func (ec *executionContext) marshalNAttribute2ᚖgitᚗvdbᚗtoᚋcercᚑioᚋla
 	return ec._Attribute(ctx, sel, v)
 }
 
+func (ec *executionContext) marshalNAuctionBid2ᚕᚖgitᚗvdbᚗtoᚋcercᚑioᚋlaconicdᚋgqlᚐAuctionBidᚄ(ctx context.Context, sel ast.SelectionSet, v []*AuctionBid) graphql.Marshaler {
+	ret := make(graphql.Array, len(v))
+	var wg sync.WaitGroup
+	isLen1 := len(v) == 1
+	if !isLen1 {
+		wg.Add(len(v))
+	}
+	for i := range v {
+		i := i
+		fc := &graphql.FieldContext{
+			Index:  &i,
+			Result: &v[i],
+		}
+		ctx := graphql.WithFieldContext(ctx, fc)
+		f := func(i int) {
+			defer func() {
+				if r := recover(); r != nil {
+					ec.Error(ctx, ec.Recover(ctx, r))
+					ret = nil
+				}
+			}()
+			if !isLen1 {
+				defer wg.Done()
+			}
+			ret[i] = ec.marshalNAuctionBid2ᚖgitᚗvdbᚗtoᚋcercᚑioᚋlaconicdᚋgqlᚐAuctionBid(ctx, sel, v[i])
+		}
+		if isLen1 {
+			f(i)
+		} else {
+			go f(i)
+		}
+
+	}
+	wg.Wait()
+
+	for _, e := range ret {
+		if e == graphql.Null {
+			return graphql.Null
+		}
+	}
+
+	return ret
+}
+
+func (ec *executionContext) marshalNAuctionBid2ᚖgitᚗvdbᚗtoᚋcercᚑioᚋlaconicdᚋgqlᚐAuctionBid(ctx context.Context, sel ast.SelectionSet, v *AuctionBid) graphql.Marshaler {
+	if v == nil {
+		if !graphql.HasFieldError(ctx, graphql.GetFieldContext(ctx)) {
+			ec.Errorf(ctx, "the requested element is null which the schema does not allow")
+		}
+		return graphql.Null
+	}
+	return ec._AuctionBid(ctx, sel, v)
+}
+
 func (ec *executionContext) marshalNAuthority2ᚕᚖgitᚗvdbᚗtoᚋcercᚑioᚋlaconicdᚋgqlᚐAuthority(ctx context.Context, sel ast.SelectionSet, v []*Authority) graphql.Marshaler {
 	ret := make(graphql.Array, len(v))
 	var wg sync.WaitGroup
@@ -10500,6 +10812,50 @@ func (ec *executionContext) marshalNBoolean2bool(ctx context.Context, sel ast.Se
 	return res
 }
 
+func (ec *executionContext) marshalNCoin2ᚕᚖgitᚗvdbᚗtoᚋcercᚑioᚋlaconicdᚋgqlᚐCoinᚄ(ctx context.Context, sel ast.SelectionSet, v []*Coin) graphql.Marshaler {
+	ret := make(graphql.Array, len(v))
+	var wg sync.WaitGroup
+	isLen1 := len(v) == 1
+	if !isLen1 {
+		wg.Add(len(v))
+	}
+	for i := range v {
+		i := i
+		fc := &graphql.FieldContext{
+			Index:  &i,
+			Result: &v[i],
+		}
+		ctx := graphql.WithFieldContext(ctx, fc)
+		f := func(i int) {
+			defer func() {
+				if r := recover(); r != nil {
+					ec.Error(ctx, ec.Recover(ctx, r))
+					ret = nil
+				}
+			}()
+			if !isLen1 {
+				defer wg.Done()
+			}
+			ret[i] = ec.marshalNCoin2ᚖgitᚗvdbᚗtoᚋcercᚑioᚋlaconicdᚋgqlᚐCoin(ctx, sel, v[i])
+		}
+		if isLen1 {
+			f(i)
+		} else {
+			go f(i)
+		}
+
+	}
+	wg.Wait()
+
+	for _, e := range ret {
+		if e == graphql.Null {
+			return graphql.Null
+		}
+	}
+
+	return ret
+}
+
 func (ec *executionContext) marshalNCoin2ᚖgitᚗvdbᚗtoᚋcercᚑioᚋlaconicdᚋgqlᚐCoin(ctx context.Context, sel ast.SelectionSet, v *Coin) graphql.Marshaler {
 	if v == nil {
 		if !graphql.HasFieldError(ctx, graphql.GetFieldContext(ctx)) {
@@ -10732,6 +11088,38 @@ func (ec *executionContext) marshalNString2string(ctx context.Context, sel ast.S
 	return res
 }
 
+func (ec *executionContext) unmarshalNString2ᚕstringᚄ(ctx context.Context, v interface{}) ([]string, error) {
+	var vSlice []interface{}
+	if v != nil {
+		vSlice = graphql.CoerceList(v)
+	}
+	var err error
+	res := make([]string, len(vSlice))
+	for i := range vSlice {
+		ctx := graphql.WithPathContext(ctx, graphql.NewPathWithIndex(i))
+		res[i], err = ec.unmarshalNString2string(ctx, vSlice[i])
+		if err != nil {
+			return nil, err
+		}
+	}
+	return res, nil
+}
+
+func (ec *executionContext) marshalNString2ᚕstringᚄ(ctx context.Context, sel ast.SelectionSet, v []string) graphql.Marshaler {
+	ret := make(graphql.Array, len(v))
+	for i := range v {
+		ret[i] = ec.marshalNString2string(ctx, sel, v[i])
+	}
+
+	for _, e := range ret {
+		if e == graphql.Null {
+			return graphql.Null
+		}
+	}
+
+	return ret
+}
+
 func (ec *executionContext) marshalNSyncInfo2ᚖgitᚗvdbᚗtoᚋcercᚑioᚋlaconicdᚋgqlᚐSyncInfo(ctx context.Context, sel ast.SelectionSet, v *SyncInfo) graphql.Marshaler {
 	if v == nil {
 		if !graphql.HasFieldError(ctx, graphql.GetFieldContext(ctx)) {
@@ -11214,54 +11602,6 @@ func (ec *executionContext) marshalOAuction2ᚖgitᚗvdbᚗtoᚋcercᚑioᚋlaco
 	return ec._Auction(ctx, sel, v)
 }
 
-func (ec *executionContext) marshalOAuctionBid2ᚕᚖgitᚗvdbᚗtoᚋcercᚑioᚋlaconicdᚋgqlᚐAuctionBid(ctx context.Context, sel ast.SelectionSet, v []*AuctionBid) graphql.Marshaler {
-	if v == nil {
-		return graphql.Null
-	}
-	ret := make(graphql.Array, len(v))
-	var wg sync.WaitGroup
-	isLen1 := len(v) == 1
-	if !isLen1 {
-		wg.Add(len(v))
-	}
-	for i := range v {
-		i := i
-		fc := &graphql.FieldContext{
-			Index:  &i,
-			Result: &v[i],
-		}
-		ctx := graphql.WithFieldContext(ctx, fc)
-		f := func(i int) {
-			defer func() {
-				if r := recover(); r != nil {
-					ec.Error(ctx, ec.Recover(ctx, r))
-					ret = nil
-				}
-			}()
-			if !isLen1 {
-				defer wg.Done()
-			}
-			ret[i] = ec.marshalOAuctionBid2ᚖgitᚗvdbᚗtoᚋcercᚑioᚋlaconicdᚋgqlᚐAuctionBid(ctx, sel, v[i])
-		}
-		if isLen1 {
-			f(i)
-		} else {
-			go f(i)
-		}
-
-	}
-	wg.Wait()
-
-	return ret
-}
-
-func (ec *executionContext) marshalOAuctionBid2ᚖgitᚗvdbᚗtoᚋcercᚑioᚋlaconicdᚋgqlᚐAuctionBid(ctx context.Context, sel ast.SelectionSet, v *AuctionBid) graphql.Marshaler {
-	if v == nil {
-		return graphql.Null
-	}
-	return ec._AuctionBid(ctx, sel, v)
-}
-
 func (ec *executionContext) marshalOAuthority2ᚖgitᚗvdbᚗtoᚋcercᚑioᚋlaconicdᚋgqlᚐAuthority(ctx context.Context, sel ast.SelectionSet, v *Authority) graphql.Marshaler {
 	if v == nil {
 		return graphql.Null

gql/models_gen.go

@@ -35,9 +35,13 @@ type Auction struct {
 	CommitFee       *Coin         `json:"commitFee"`
 	RevealFee       *Coin         `json:"revealFee"`
 	MinimumBid      *Coin         `json:"minimumBid"`
-	WinnerAddress  string        `json:"winnerAddress"`
+	WinnerAddresses []string      `json:"winnerAddresses"`
-	WinnerBid      *Coin         `json:"winnerBid"`
+	WinnerBids      []*Coin       `json:"winnerBids"`
 	WinnerPrice     *Coin         `json:"winnerPrice"`
+	MaxPrice        *Coin         `json:"maxPrice"`
+	Kind            string        `json:"kind"`
+	NumProviders    *int          `json:"numProviders"`
+	FundsReleased   bool          `json:"fundsReleased"`
 	Bids            []*AuctionBid `json:"bids"`
 }
 

gql/util.go

@@ -232,6 +232,8 @@ func GetGQLAuction(auction *auctiontypes.Auction, bids []*auctiontypes.Bid) (*Au
 		return nil, nil
 	}
 
+	numProviders := int(auction.NumProviders)
+
 	gqlAuction := Auction{
 		ID:              auction.Id,
 		Status:          auction.Status,
@@ -242,9 +244,13 @@ func GetGQLAuction(auction *auctiontypes.Auction, bids []*auctiontypes.Bid) (*Au
 		CommitFee:       getGQLCoin(auction.CommitFee),
 		RevealFee:       getGQLCoin(auction.RevealFee),
 		MinimumBid:      getGQLCoin(auction.MinimumBid),
-		WinnerAddress:  auction.WinnerAddress,
+		WinnerAddresses: auction.WinnerAddresses,
-		WinnerBid:      getGQLCoin(auction.WinningBid),
+		WinnerBids:      getGQLCoins(auction.WinningBids),
 		WinnerPrice:     getGQLCoin(auction.WinningPrice),
+		MaxPrice:        getGQLCoin(auction.MaxPrice),
+		Kind:            auction.Kind,
+		NumProviders:    &numProviders,
+		FundsReleased:   auction.FundsReleased,
 	}
 
 	auctionBids := make([]*AuctionBid, len(bids))

proto/cerc/auction/v1/auction.proto

@@ -3,76 +3,44 @@ syntax = "proto3";
 package cerc.auction.v1;
 
 import "gogoproto/gogo.proto";
-import "google/protobuf/duration.proto";
 import "google/protobuf/timestamp.proto";
 import "cosmos/base/v1beta1/coin.proto";
 
 option go_package = "git.vdb.to/cerc-io/laconicd/x/auction";
 
 // Params defines the auction module parameters
-message Params {
+message Params {}
-  // Write custom stringer method
-  option (gogoproto.goproto_stringer) = false;
-
-  // Duration of the commits phase in seconds
-  google.protobuf.Duration commits_duration = 1 [
-    (gogoproto.nullable) = false,
-    (gogoproto.stdduration) = true,
-    (gogoproto.moretags) = "json:\"commits_duration\" yaml:\"commits_duration\""
-  ];
-
-  // Duration of the reveals phase in seconds
-  google.protobuf.Duration reveals_duration = 2 [
-    (gogoproto.nullable) = false,
-    (gogoproto.stdduration) = true,
-    (gogoproto.moretags) = "json:\"reveals_duration\" yaml:\"reveals_duration\""
-  ];
-
-  // Commit fees
-  cosmos.base.v1beta1.Coin commit_fee = 3 [
-    (gogoproto.nullable) = false,
-    (gogoproto.moretags) = "json:\"commit_fee\" yaml:\"commit_fee\""
-  ];
-
-  // Reveal fees
-  cosmos.base.v1beta1.Coin reveal_fee = 4 [
-    (gogoproto.nullable) = false,
-    (gogoproto.moretags) = "json:\"reveal_fee\" yaml:\"reveal_fee\""
-  ];
-
-  // Minimum acceptable bid amount
-  cosmos.base.v1beta1.Coin minimum_bid = 5 [
-    (gogoproto.nullable) = false,
-    (gogoproto.moretags) = "json:\"minimum_bid\" yaml:\"minimum_bid\""
-  ];
-}
 
 // Auction represents a sealed-bid on-chain auction
 message Auction {
   option (gogoproto.goproto_getters) = false;
 
   string id = 1;
-  string status = 2;
+
+  // Auction kind (vickrey | provider)
+  string kind = 2 [ (gogoproto.moretags) = "json:\"kind\" yaml:\"kind\"" ];
+
+  string status = 3;
 
   // Address of the creator of the auction
-  string owner_address = 3;
+  string owner_address = 4;
 
   // Timestamp at which the auction was created
-  google.protobuf.Timestamp create_time = 4 [
+  google.protobuf.Timestamp create_time = 5 [
     (gogoproto.stdtime) = true,
     (gogoproto.nullable) = false,
     (gogoproto.moretags) = "json:\"create_time\" yaml:\"create_time\""
   ];
 
   // Timestamp at which the commits phase concluded
-  google.protobuf.Timestamp commits_end_time = 5 [
+  google.protobuf.Timestamp commits_end_time = 6 [
     (gogoproto.stdtime) = true,
     (gogoproto.nullable) = false,
     (gogoproto.moretags) = "json:\"commits_end_time\" yaml:\"commits_end_time\""
   ];
 
   // Timestamp at which the reveals phase concluded
-  google.protobuf.Timestamp reveals_end_time = 6 [
+  google.protobuf.Timestamp reveals_end_time = 7 [
     (gogoproto.stdtime) = true,
     (gogoproto.nullable) = false,
     (gogoproto.moretags) = "json:\"reveals_end_time\" yaml:\"reveals_end_time\""
@@ -80,35 +48,58 @@ message Auction {
 
   // Commit and reveal fees must both be paid when committing a bid
   // Reveal fee is returned only if the bid is revealed
-  cosmos.base.v1beta1.Coin commit_fee = 7 [
+  cosmos.base.v1beta1.Coin commit_fee = 8 [
     (gogoproto.nullable) = false,
     (gogoproto.moretags) = "json:\"commit_fee\" yaml:\"commit_fee\""
   ];
-  cosmos.base.v1beta1.Coin reveal_fee = 8 [
+  cosmos.base.v1beta1.Coin reveal_fee = 9 [
     (gogoproto.nullable) = false,
     (gogoproto.moretags) = "json:\"reveal_fee\" yaml:\"reveal_fee\""
   ];
 
   // Minimum acceptable bid amount for a valid commit
-  cosmos.base.v1beta1.Coin minimum_bid = 9 [
+  // Only applicable in vickrey auctions
+  cosmos.base.v1beta1.Coin minimum_bid = 10 [
     (gogoproto.nullable) = false,
     (gogoproto.moretags) = "json:\"minimum_bid\" yaml:\"minimum_bid\""
   ];
 
-  // Address of the winner
+  // Addresses of the winners
-  string winner_address = 10;
+  // (single winner for vickrey auction)
+  // (multiple winners for provider auctions)
+  repeated string winner_addresses = 11;
 
-  // Winning bid, i.e., the highest bid
+  // Winning bids, i.e. the best bids
-  cosmos.base.v1beta1.Coin winning_bid = 11 [
+  repeated cosmos.base.v1beta1.Coin winning_bids = 12 [
     (gogoproto.nullable) = false,
-    (gogoproto.moretags) = "json:\"winning_bid\" yaml:\"winning_bid\""
+    (gogoproto.moretags) = "json:\"winning_bids\" yaml:\"winning_bids\""
   ];
 
-  // Amount the winner pays, i.e. the second highest auction
+  // Auction winning price
-  cosmos.base.v1beta1.Coin winning_price = 12 [
+  // vickrey auction: second highest bid, paid by the winner
+  // provider auction: higest bid amongst winning_bids, paid by auction creator
+  // to each winner
+  cosmos.base.v1beta1.Coin winning_price = 13 [
     (gogoproto.nullable) = false,
     (gogoproto.moretags) = "json:\"winning_price\" yaml:\"winning_price\""
   ];
+
+  // Maximum acceptable bid amount for a valid commit
+  // Only applicable in provider auctions
+  cosmos.base.v1beta1.Coin max_price = 14 [
+    (gogoproto.nullable) = false,
+    (gogoproto.moretags) = "json:\"max_price\" yaml:\"max_price\""
+  ];
+
+  // Number of desired providers (num of auction winners)
+  // Only applicable in provider auctions
+  int32 num_providers = 15;
+
+  // Whether funds have been released to providers
+  // Only applicable in provider auctions
+  bool funds_released = 16
+      [ (gogoproto.moretags) =
+            "json:\"funds_released\" yaml:\"funds_released\"" ];
 }
 
 // Auctions represent all the auctions in the module

proto/cerc/auction/v1/tx.proto

@@ -34,6 +34,11 @@ service Msg {
   // UpdateParams defines an operation for updating the x/staking module
   // parameters.
   rpc UpdateParams(MsgUpdateParams) returns (MsgUpdateParamsResponse);
+
+  // ReleaseFunds is the command for paying the winners of provider auctions
+  rpc ReleaseFunds(MsgReleaseFunds) returns (MsgReleaseFundsResponse) {
+    option (google.api.http).post = "/cerc/auction/v1/release_funds";
+  };
 }
 
 // MsgCreateAuction defines a create auction message
@@ -41,41 +46,56 @@ message MsgCreateAuction {
   option (gogoproto.goproto_getters) = false;
   option (cosmos.msg.v1.signer) = "signer";
 
+  // Address of the signer
+  string signer = 1
+      [ (gogoproto.moretags) = "json:\"signer\" yaml:\"signer\"" ];
+
+  // Auction kind (vickrey | provider)
+  string kind = 2 [ (gogoproto.moretags) = "json:\"kind\" yaml:\"kind\"" ];
+
   // Duration of the commits phase in seconds
-  google.protobuf.Duration commits_duration = 1 [
+  google.protobuf.Duration commits_duration = 3 [
     (gogoproto.nullable) = false,
     (gogoproto.stdduration) = true,
     (gogoproto.moretags) = "json:\"commits_duration\" yaml:\"commits_duration\""
   ];
 
   // Duration of the reveals phase in seconds
-  google.protobuf.Duration reveals_duration = 2 [
+  google.protobuf.Duration reveals_duration = 4 [
     (gogoproto.nullable) = false,
     (gogoproto.stdduration) = true,
     (gogoproto.moretags) = "json:\"reveals_duration\" yaml:\"reveals_duration\""
   ];
 
   // Commit fees
-  cosmos.base.v1beta1.Coin commit_fee = 3 [
+  cosmos.base.v1beta1.Coin commit_fee = 5 [
     (gogoproto.nullable) = false,
     (gogoproto.moretags) = "json:\"commit_fee\" yaml:\"commit_fee\""
   ];
 
   // Reveal fees
-  cosmos.base.v1beta1.Coin reveal_fee = 4 [
+  cosmos.base.v1beta1.Coin reveal_fee = 6 [
     (gogoproto.nullable) = false,
     (gogoproto.moretags) = "json:\"reveal_fee\" yaml:\"reveal_fee\""
   ];
 
   // Minimum acceptable bid amount
-  cosmos.base.v1beta1.Coin minimum_bid = 5 [
+  // Only applicable in vickrey auctions
+  cosmos.base.v1beta1.Coin minimum_bid = 7 [
     (gogoproto.nullable) = false,
     (gogoproto.moretags) = "json:\"minimum_bid\" yaml:\"minimum_bid\""
   ];
 
-  // Address of the signer
+  // Maximum acceptable bid amount
-  string signer = 6
+  // Only applicable in provider auctions
-      [ (gogoproto.moretags) = "json:\"signer\" yaml:\"signer\"" ];
+  cosmos.base.v1beta1.Coin max_price = 8 [
+    (gogoproto.nullable) = false,
+    (gogoproto.moretags) = "json:\"max_price\" yaml:\"max_price\""
+  ];
+
+  // Number of desired providers (num of auction winners)
+  // Only applicable in provider auctions
+  int32 num_providers = 9;
 }
 
 // MsgCreateAuctionResponse returns the details of the created auction
@@ -157,3 +177,27 @@ message MsgUpdateParams {
 // MsgUpdateParamsResponse defines the response structure for executing a
 // MsgUpdateParams message.
 message MsgUpdateParamsResponse {};
+
+// ReleaseFunds defines the message to pay the winners of provider auctions
+message MsgReleaseFunds {
+  option (gogoproto.goproto_getters) = false;
+  option (cosmos.msg.v1.signer) = "signer";
+
+  // Auction id
+  string auction_id = 1
+      [ (gogoproto.moretags) = "json:\"auction_id\" yaml:\"auction_id\"" ];
+
+  // Address of the signer
+  string signer = 2
+      [ (gogoproto.moretags) = "json:\"signer\" yaml:\"signer\"" ];
+}
+
+// MsgReleaseFundsResponse returns the state of the auction after releasing the
+// funds
+message MsgReleaseFundsResponse {
+  option (gogoproto.goproto_getters) = false;
+
+  // Auction details
+  Auction auction = 1
+      [ (gogoproto.moretags) = "json:\"auction\" yaml:\"auction\"" ];
+}

tests/e2e/auction/suite.go

@@ -103,10 +103,13 @@ func (ets *E2ETestSuite) createAuctionAndBid(createAuction, createBid bool) stri
 
 	if createAuction {
 		auctionArgs := []string{
+			types.AuctionKindVickrey,
 			sampleCommitTime, sampleRevealTime,
 			fmt.Sprintf("10%s", ets.cfg.BondDenom),
 			fmt.Sprintf("10%s", ets.cfg.BondDenom),
 			fmt.Sprintf("100%s", ets.cfg.BondDenom),
+			fmt.Sprintf("0%s", ets.cfg.BondDenom),
+			"0",
 		}
 
 		resp, err := ets.executeTx(cli.GetCmdCreateAuction(), auctionArgs, ownerAccount)

tests/e2e/auction/tx.go

@@ -46,10 +46,13 @@ func (ets *E2ETestSuite) TestTxCommitBid() {
 		ets.Run(fmt.Sprintf("Case %s", test.msg), func() {
 			if test.createAuction {
 				auctionArgs := []string{
+					auctiontypes.AuctionKindVickrey,
 					sampleCommitTime, sampleRevealTime,
 					fmt.Sprintf("10%s", ets.cfg.BondDenom),
 					fmt.Sprintf("10%s", ets.cfg.BondDenom),
 					fmt.Sprintf("100%s", ets.cfg.BondDenom),
+					fmt.Sprintf("0%s", ets.cfg.BondDenom),
+					"0",
 				}
 
 				resp, err := ets.executeTx(cli.GetCmdCreateAuction(), auctionArgs, ownerAccount)

tests/integration/auction/keeper/query_server_test.go

@@ -3,9 +3,12 @@ package keeper_test
 import (
 	"context"
 	"fmt"
+	"time"
 
 	"cosmossdk.io/math"
+	sdkmath "cosmossdk.io/math"
 	simtestutil "github.com/cosmos/cosmos-sdk/testutil/sims"
+	sdk "github.com/cosmos/cosmos-sdk/types"
 
 	integrationTest "git.vdb.to/cerc-io/laconicd/tests/integration"
 	types "git.vdb.to/cerc-io/laconicd/x/auction"
@@ -284,6 +287,7 @@ func (kts *KeeperTestSuite) TestGrpcGetAuctionsByOwner() {
 }
 
 func (kts *KeeperTestSuite) TestGrpcQueryBalance() {
+
 	testCases := []struct {
 		msg           string
 		req           *types.QueryGetAuctionModuleBalanceRequest
@@ -326,12 +330,18 @@ func (kts *KeeperTestSuite) createAuctionAndCommitBid(commitBid bool) (*types.Au
 	// Create funded account(s)
 	accounts := simtestutil.AddTestAddrs(kts.BankKeeper, integrationTest.BondDenomProvider{}, ctx, accCount, math.NewInt(1000000))
 
-	params, err := k.GetParams(ctx)
+	auction, err := k.CreateAuction(
-	if err != nil {
+		ctx,
-		return nil, nil, err
+		types.MsgCreateAuction{
-	}
+			Kind:            types.AuctionKindVickrey,
-
+			Signer:          accounts[0].String(),
-	auction, err := k.CreateAuction(ctx, types.NewMsgCreateAuction(*params, accounts[0]))
+			CommitsDuration: 5 * time.Minute,
+			RevealsDuration: 5 * time.Minute,
+			CommitFee:       sdk.NewCoin(sdk.DefaultBondDenom, sdkmath.NewInt(1000)),
+			RevealFee:       sdk.NewCoin(sdk.DefaultBondDenom, sdkmath.NewInt(1000)),
+			MinimumBid:      sdk.NewCoin(sdk.DefaultBondDenom, sdkmath.NewInt(1000000)),
+		},
+	)
 	if err != nil {
 		return nil, nil, err
 	}

x/auction/auction.pb.go

@@ -9,7 +9,6 @@ import (
 	_ "github.com/cosmos/gogoproto/gogoproto"
 	proto "github.com/cosmos/gogoproto/proto"
 	github_com_cosmos_gogoproto_types "github.com/cosmos/gogoproto/types"
-	_ "google.golang.org/protobuf/types/known/durationpb"
 	_ "google.golang.org/protobuf/types/known/timestamppb"
 	io "io"
 	math "math"
@@ -31,19 +30,10 @@ const _ = proto.GoGoProtoPackageIsVersion3 // please upgrade the proto package
 
 // Params defines the auction module parameters
 type Params struct {
-	// Duration of the commits phase in seconds
-	CommitsDuration time.Duration `protobuf:"bytes,1,opt,name=commits_duration,json=commitsDuration,proto3,stdduration" json:"commits_duration" json:"commits_duration" yaml:"commits_duration"`
-	// Duration of the reveals phase in seconds
-	RevealsDuration time.Duration `protobuf:"bytes,2,opt,name=reveals_duration,json=revealsDuration,proto3,stdduration" json:"reveals_duration" json:"reveals_duration" yaml:"reveals_duration"`
-	// Commit fees
-	CommitFee types.Coin `protobuf:"bytes,3,opt,name=commit_fee,json=commitFee,proto3" json:"commit_fee" json:"commit_fee" yaml:"commit_fee"`
-	// Reveal fees
-	RevealFee types.Coin `protobuf:"bytes,4,opt,name=reveal_fee,json=revealFee,proto3" json:"reveal_fee" json:"reveal_fee" yaml:"reveal_fee"`
-	// Minimum acceptable bid amount
-	MinimumBid types.Coin `protobuf:"bytes,5,opt,name=minimum_bid,json=minimumBid,proto3" json:"minimum_bid" json:"minimum_bid" yaml:"minimum_bid"`
 }
 
 func (m *Params) Reset()         { *m = Params{} }
+func (m *Params) String() string { return proto.CompactTextString(m) }
 func (*Params) ProtoMessage()    {}
 func (*Params) Descriptor() ([]byte, []int) {
 	return fileDescriptor_34b162eb5b365523, []int{0}
@@ -75,65 +65,47 @@ func (m *Params) XXX_DiscardUnknown() {
 
 var xxx_messageInfo_Params proto.InternalMessageInfo
 
-func (m *Params) GetCommitsDuration() time.Duration {
-	if m != nil {
-		return m.CommitsDuration
-	}
-	return 0
-}
-
-func (m *Params) GetRevealsDuration() time.Duration {
-	if m != nil {
-		return m.RevealsDuration
-	}
-	return 0
-}
-
-func (m *Params) GetCommitFee() types.Coin {
-	if m != nil {
-		return m.CommitFee
-	}
-	return types.Coin{}
-}
-
-func (m *Params) GetRevealFee() types.Coin {
-	if m != nil {
-		return m.RevealFee
-	}
-	return types.Coin{}
-}
-
-func (m *Params) GetMinimumBid() types.Coin {
-	if m != nil {
-		return m.MinimumBid
-	}
-	return types.Coin{}
-}
-
 // Auction represents a sealed-bid on-chain auction
 type Auction struct {
 	Id string `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
-	Status string `protobuf:"bytes,2,opt,name=status,proto3" json:"status,omitempty"`
+	// Auction kind (vickrey | provider)
+	Kind   string `protobuf:"bytes,2,opt,name=kind,proto3" json:"kind,omitempty" json:"kind" yaml:"kind"`
+	Status string `protobuf:"bytes,3,opt,name=status,proto3" json:"status,omitempty"`
 	// Address of the creator of the auction
-	OwnerAddress string `protobuf:"bytes,3,opt,name=owner_address,json=ownerAddress,proto3" json:"owner_address,omitempty"`
+	OwnerAddress string `protobuf:"bytes,4,opt,name=owner_address,json=ownerAddress,proto3" json:"owner_address,omitempty"`
 	// Timestamp at which the auction was created
-	CreateTime time.Time `protobuf:"bytes,4,opt,name=create_time,json=createTime,proto3,stdtime" json:"create_time" json:"create_time" yaml:"create_time"`
+	CreateTime time.Time `protobuf:"bytes,5,opt,name=create_time,json=createTime,proto3,stdtime" json:"create_time" json:"create_time" yaml:"create_time"`
 	// Timestamp at which the commits phase concluded
-	CommitsEndTime time.Time `protobuf:"bytes,5,opt,name=commits_end_time,json=commitsEndTime,proto3,stdtime" json:"commits_end_time" json:"commits_end_time" yaml:"commits_end_time"`
+	CommitsEndTime time.Time `protobuf:"bytes,6,opt,name=commits_end_time,json=commitsEndTime,proto3,stdtime" json:"commits_end_time" json:"commits_end_time" yaml:"commits_end_time"`
 	// Timestamp at which the reveals phase concluded
-	RevealsEndTime time.Time `protobuf:"bytes,6,opt,name=reveals_end_time,json=revealsEndTime,proto3,stdtime" json:"reveals_end_time" json:"reveals_end_time" yaml:"reveals_end_time"`
+	RevealsEndTime time.Time `protobuf:"bytes,7,opt,name=reveals_end_time,json=revealsEndTime,proto3,stdtime" json:"reveals_end_time" json:"reveals_end_time" yaml:"reveals_end_time"`
 	// Commit and reveal fees must both be paid when committing a bid
 	// Reveal fee is returned only if the bid is revealed
-	CommitFee types.Coin `protobuf:"bytes,7,opt,name=commit_fee,json=commitFee,proto3" json:"commit_fee" json:"commit_fee" yaml:"commit_fee"`
+	CommitFee types.Coin `protobuf:"bytes,8,opt,name=commit_fee,json=commitFee,proto3" json:"commit_fee" json:"commit_fee" yaml:"commit_fee"`
-	RevealFee types.Coin `protobuf:"bytes,8,opt,name=reveal_fee,json=revealFee,proto3" json:"reveal_fee" json:"reveal_fee" yaml:"reveal_fee"`
+	RevealFee types.Coin `protobuf:"bytes,9,opt,name=reveal_fee,json=revealFee,proto3" json:"reveal_fee" json:"reveal_fee" yaml:"reveal_fee"`
 	// Minimum acceptable bid amount for a valid commit
-	MinimumBid types.Coin `protobuf:"bytes,9,opt,name=minimum_bid,json=minimumBid,proto3" json:"minimum_bid" json:"minimum_bid" yaml:"minimum_bid"`
+	// Only applicable in vickrey auctions
-	// Address of the winner
+	MinimumBid types.Coin `protobuf:"bytes,10,opt,name=minimum_bid,json=minimumBid,proto3" json:"minimum_bid" json:"minimum_bid" yaml:"minimum_bid"`
-	WinnerAddress string `protobuf:"bytes,10,opt,name=winner_address,json=winnerAddress,proto3" json:"winner_address,omitempty"`
+	// Addresses of the winners
-	// Winning bid, i.e., the highest bid
+	// (single winner for vickrey auction)
-	WinningBid types.Coin `protobuf:"bytes,11,opt,name=winning_bid,json=winningBid,proto3" json:"winning_bid" json:"winning_bid" yaml:"winning_bid"`
+	// (multiple winners for provider auctions)
-	// Amount the winner pays, i.e. the second highest auction
+	WinnerAddresses []string `protobuf:"bytes,11,rep,name=winner_addresses,json=winnerAddresses,proto3" json:"winner_addresses,omitempty"`
-	WinningPrice types.Coin `protobuf:"bytes,12,opt,name=winning_price,json=winningPrice,proto3" json:"winning_price" json:"winning_price" yaml:"winning_price"`
+	// Winning bids, i.e. the best bids
+	WinningBids []types.Coin `protobuf:"bytes,12,rep,name=winning_bids,json=winningBids,proto3" json:"winning_bids" json:"winning_bids" yaml:"winning_bids"`
+	// Auction winning price
+	// vickrey auction: second highest bid, paid by the winner
+	// provider auction: higest bid amongst winning_bids, paid by auction creator
+	// to each winner
+	WinningPrice types.Coin `protobuf:"bytes,13,opt,name=winning_price,json=winningPrice,proto3" json:"winning_price" json:"winning_price" yaml:"winning_price"`
+	// Maximum acceptable bid amount for a valid commit
+	// Only applicable in provider auctions
+	MaxPrice types.Coin `protobuf:"bytes,14,opt,name=max_price,json=maxPrice,proto3" json:"max_price" json:"max_price" yaml:"max_price"`
+	// Number of desired providers (num of auction winners)
+	// Only applicable in provider auctions
+	NumProviders int32 `protobuf:"varint,15,opt,name=num_providers,json=numProviders,proto3" json:"num_providers,omitempty"`
+	// Whether funds have been released to providers
+	// Only applicable in provider auctions
+	FundsReleased bool `protobuf:"varint,16,opt,name=funds_released,json=fundsReleased,proto3" json:"funds_released,omitempty" json:"funds_released" yaml:"funds_released"`
 }
 
 func (m *Auction) Reset()         { *m = Auction{} }
@@ -263,57 +235,60 @@ func init() {
 func init() { proto.RegisterFile("cerc/auction/v1/auction.proto", fileDescriptor_34b162eb5b365523) }
 
 var fileDescriptor_34b162eb5b365523 = []byte{
-	// 798 bytes of a gzipped FileDescriptorProto
+	// 846 bytes of a gzipped FileDescriptorProto
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+	0x02, 0x90, 0x52, 0x9c, 0x20, 0x26, 0x4a, 0x5e, 0x3c, 0xd8, 0x47, 0xef, 0x53, 0x2d, 0xa6, 0xa6,
-	0xfe, 0x08, 0x46, 0x34, 0x21, 0x11, 0xf2, 0xdf, 0xe9, 0xff, 0x12, 0xc3, 0xaa, 0xe8, 0xf3, 0x83,
+	0xc4, 0xdd, 0x94, 0xe2, 0x33, 0xb5, 0xd6, 0x13, 0x1a, 0x7d, 0xf2, 0xea, 0x66, 0xe8, 0xbc, 0xbe,
-	0x5f, 0x01, 0x00, 0x00, 0xff, 0xff, 0x61, 0xbb, 0x15, 0xc2, 0x47, 0x0a, 0x00, 0x00,
+	0x19, 0x3a, 0x7f, 0xde, 0x0c, 0x9d, 0x97, 0xb7, 0xc3, 0xd6, 0xeb, 0xdb, 0x61, 0xeb, 0xf7, 0xdb,
+	0x61, 0xeb, 0xdb, 0xe3, 0x19, 0x2d, 0x82, 0x05, 0x4e, 0x83, 0x42, 0x84, 0xd5, 0xd4, 0x3f, 0xa7,
+	0x22, 0x9c, 0xa3, 0x4c, 0x70, 0x9a, 0xe1, 0xf0, 0xda, 0xfe, 0xad, 0x49, 0xdb, 0xea, 0x9d, 0x3f,
+	0xfa, 0x2b, 0x00, 0x00, 0xff, 0xff, 0xb8, 0x67, 0x62, 0x6b, 0xf8, 0x08, 0x00, 0x00,
 }
 
 func (m *Params) Marshal() (dAtA []byte, err error) {
@@ -336,52 +311,6 @@ func (m *Params) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 	_ = i
 	var l int
 	_ = l
-	{
-		size, err := m.MinimumBid.MarshalToSizedBuffer(dAtA[:i])
-		if err != nil {
-			return 0, err
-		}
-		i -= size
-		i = encodeVarintAuction(dAtA, i, uint64(size))
-	}
-	i--
-	dAtA[i] = 0x2a
-	{
-		size, err := m.RevealFee.MarshalToSizedBuffer(dAtA[:i])
-		if err != nil {
-			return 0, err
-		}
-		i -= size
-		i = encodeVarintAuction(dAtA, i, uint64(size))
-	}
-	i--
-	dAtA[i] = 0x22
-	{
-		size, err := m.CommitFee.MarshalToSizedBuffer(dAtA[:i])
-		if err != nil {
-			return 0, err
-		}
-		i -= size
-		i = encodeVarintAuction(dAtA, i, uint64(size))
-	}
-	i--
-	dAtA[i] = 0x1a
-	n4, err4 := github_com_cosmos_gogoproto_types.StdDurationMarshalTo(m.RevealsDuration, dAtA[i-github_com_cosmos_gogoproto_types.SizeOfStdDuration(m.RevealsDuration):])
-	if err4 != nil {
-		return 0, err4
-	}
-	i -= n4
-	i = encodeVarintAuction(dAtA, i, uint64(n4))
-	i--
-	dAtA[i] = 0x12
-	n5, err5 := github_com_cosmos_gogoproto_types.StdDurationMarshalTo(m.CommitsDuration, dAtA[i-github_com_cosmos_gogoproto_types.SizeOfStdDuration(m.CommitsDuration):])
-	if err5 != nil {
-		return 0, err5
-	}
-	i -= n5
-	i = encodeVarintAuction(dAtA, i, uint64(n5))
-	i--
-	dAtA[i] = 0xa
 	return len(dAtA) - i, nil
 }
 
@@ -405,6 +334,33 @@ func (m *Auction) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 	_ = i
 	var l int
 	_ = l
+	if m.FundsReleased {
+		i--
+		if m.FundsReleased {
+			dAtA[i] = 1
+		} else {
+			dAtA[i] = 0
+		}
+		i--
+		dAtA[i] = 0x1
+		i--
+		dAtA[i] = 0x80
+	}
+	if m.NumProviders != 0 {
+		i = encodeVarintAuction(dAtA, i, uint64(m.NumProviders))
+		i--
+		dAtA[i] = 0x78
+	}
+	{
+		size, err := m.MaxPrice.MarshalToSizedBuffer(dAtA[:i])
+		if err != nil {
+			return 0, err
+		}
+		i -= size
+		i = encodeVarintAuction(dAtA, i, uint64(size))
+	}
+	i--
+	dAtA[i] = 0x72
 	{
 		size, err := m.WinningPrice.MarshalToSizedBuffer(dAtA[:i])
 		if err != nil {
@@ -414,9 +370,11 @@ func (m *Auction) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 		i = encodeVarintAuction(dAtA, i, uint64(size))
 	}
 	i--
-	dAtA[i] = 0x62
+	dAtA[i] = 0x6a
+	if len(m.WinningBids) > 0 {
+		for iNdEx := len(m.WinningBids) - 1; iNdEx >= 0; iNdEx-- {
 			{
-		size, err := m.WinningBid.MarshalToSizedBuffer(dAtA[:i])
+				size, err := m.WinningBids[iNdEx].MarshalToSizedBuffer(dAtA[:i])
 				if err != nil {
 					return 0, err
 				}
@@ -424,13 +382,17 @@ func (m *Auction) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 				i = encodeVarintAuction(dAtA, i, uint64(size))
 			}
 			i--
-	dAtA[i] = 0x5a
+			dAtA[i] = 0x62
-	if len(m.WinnerAddress) > 0 {
+		}
-		i -= len(m.WinnerAddress)
+	}
-		copy(dAtA[i:], m.WinnerAddress)
+	if len(m.WinnerAddresses) > 0 {
-		i = encodeVarintAuction(dAtA, i, uint64(len(m.WinnerAddress)))
+		for iNdEx := len(m.WinnerAddresses) - 1; iNdEx >= 0; iNdEx-- {
+			i -= len(m.WinnerAddresses[iNdEx])
+			copy(dAtA[i:], m.WinnerAddresses[iNdEx])
+			i = encodeVarintAuction(dAtA, i, uint64(len(m.WinnerAddresses[iNdEx])))
 			i--
-		dAtA[i] = 0x52
+			dAtA[i] = 0x5a
+		}
 	}
 	{
 		size, err := m.MinimumBid.MarshalToSizedBuffer(dAtA[:i])
@@ -441,7 +403,7 @@ func (m *Auction) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 		i = encodeVarintAuction(dAtA, i, uint64(size))
 	}
 	i--
-	dAtA[i] = 0x4a
+	dAtA[i] = 0x52
 	{
 		size, err := m.RevealFee.MarshalToSizedBuffer(dAtA[:i])
 		if err != nil {
@@ -451,7 +413,7 @@ func (m *Auction) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 		i = encodeVarintAuction(dAtA, i, uint64(size))
 	}
 	i--
-	dAtA[i] = 0x42
+	dAtA[i] = 0x4a
 	{
 		size, err := m.CommitFee.MarshalToSizedBuffer(dAtA[:i])
 		if err != nil {
@@ -461,43 +423,50 @@ func (m *Auction) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 		i = encodeVarintAuction(dAtA, i, uint64(size))
 	}
 	i--
-	dAtA[i] = 0x3a
+	dAtA[i] = 0x42
-	n11, err11 := github_com_cosmos_gogoproto_types.StdTimeMarshalTo(m.RevealsEndTime, dAtA[i-github_com_cosmos_gogoproto_types.SizeOfStdTime(m.RevealsEndTime):])
+	n6, err6 := github_com_cosmos_gogoproto_types.StdTimeMarshalTo(m.RevealsEndTime, dAtA[i-github_com_cosmos_gogoproto_types.SizeOfStdTime(m.RevealsEndTime):])
-	if err11 != nil {
+	if err6 != nil {
-		return 0, err11
+		return 0, err6
 	}
-	i -= n11
+	i -= n6
-	i = encodeVarintAuction(dAtA, i, uint64(n11))
+	i = encodeVarintAuction(dAtA, i, uint64(n6))
+	i--
+	dAtA[i] = 0x3a
+	n7, err7 := github_com_cosmos_gogoproto_types.StdTimeMarshalTo(m.CommitsEndTime, dAtA[i-github_com_cosmos_gogoproto_types.SizeOfStdTime(m.CommitsEndTime):])
+	if err7 != nil {
+		return 0, err7
+	}
+	i -= n7
+	i = encodeVarintAuction(dAtA, i, uint64(n7))
 	i--
 	dAtA[i] = 0x32
-	n12, err12 := github_com_cosmos_gogoproto_types.StdTimeMarshalTo(m.CommitsEndTime, dAtA[i-github_com_cosmos_gogoproto_types.SizeOfStdTime(m.CommitsEndTime):])
+	n8, err8 := github_com_cosmos_gogoproto_types.StdTimeMarshalTo(m.CreateTime, dAtA[i-github_com_cosmos_gogoproto_types.SizeOfStdTime(m.CreateTime):])
-	if err12 != nil {
+	if err8 != nil {
-		return 0, err12
+		return 0, err8
 	}
-	i -= n12
+	i -= n8
-	i = encodeVarintAuction(dAtA, i, uint64(n12))
+	i = encodeVarintAuction(dAtA, i, uint64(n8))
 	i--
 	dAtA[i] = 0x2a
-	n13, err13 := github_com_cosmos_gogoproto_types.StdTimeMarshalTo(m.CreateTime, dAtA[i-github_com_cosmos_gogoproto_types.SizeOfStdTime(m.CreateTime):])
-	if err13 != nil {
-		return 0, err13
-	}
-	i -= n13
-	i = encodeVarintAuction(dAtA, i, uint64(n13))
-	i--
-	dAtA[i] = 0x22
 	if len(m.OwnerAddress) > 0 {
 		i -= len(m.OwnerAddress)
 		copy(dAtA[i:], m.OwnerAddress)
 		i = encodeVarintAuction(dAtA, i, uint64(len(m.OwnerAddress)))
 		i--
-		dAtA[i] = 0x1a
+		dAtA[i] = 0x22
 	}
 	if len(m.Status) > 0 {
 		i -= len(m.Status)
 		copy(dAtA[i:], m.Status)
 		i = encodeVarintAuction(dAtA, i, uint64(len(m.Status)))
 		i--
+		dAtA[i] = 0x1a
+	}
+	if len(m.Kind) > 0 {
+		i -= len(m.Kind)
+		copy(dAtA[i:], m.Kind)
+		i = encodeVarintAuction(dAtA, i, uint64(len(m.Kind)))
+		i--
 		dAtA[i] = 0x12
 	}
 	if len(m.Id) > 0 {
@@ -587,12 +556,12 @@ func (m *Bid) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 	}
 	i--
 	dAtA[i] = 0x42
-	n16, err16 := github_com_cosmos_gogoproto_types.StdTimeMarshalTo(m.RevealTime, dAtA[i-github_com_cosmos_gogoproto_types.SizeOfStdTime(m.RevealTime):])
+	n11, err11 := github_com_cosmos_gogoproto_types.StdTimeMarshalTo(m.RevealTime, dAtA[i-github_com_cosmos_gogoproto_types.SizeOfStdTime(m.RevealTime):])
-	if err16 != nil {
+	if err11 != nil {
-		return 0, err16
+		return 0, err11
 	}
-	i -= n16
+	i -= n11
-	i = encodeVarintAuction(dAtA, i, uint64(n16))
+	i = encodeVarintAuction(dAtA, i, uint64(n11))
 	i--
 	dAtA[i] = 0x3a
 	{
@@ -605,12 +574,12 @@ func (m *Bid) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 	}
 	i--
 	dAtA[i] = 0x32
-	n18, err18 := github_com_cosmos_gogoproto_types.StdTimeMarshalTo(m.CommitTime, dAtA[i-github_com_cosmos_gogoproto_types.SizeOfStdTime(m.CommitTime):])
+	n13, err13 := github_com_cosmos_gogoproto_types.StdTimeMarshalTo(m.CommitTime, dAtA[i-github_com_cosmos_gogoproto_types.SizeOfStdTime(m.CommitTime):])
-	if err18 != nil {
+	if err13 != nil {
-		return 0, err18
+		return 0, err13
 	}
-	i -= n18
+	i -= n13
-	i = encodeVarintAuction(dAtA, i, uint64(n18))
+	i = encodeVarintAuction(dAtA, i, uint64(n13))
 	i--
 	dAtA[i] = 0x2a
 	if len(m.CommitHash) > 0 {
@@ -661,16 +630,6 @@ func (m *Params) Size() (n int) {
 	}
 	var l int
 	_ = l
-	l = github_com_cosmos_gogoproto_types.SizeOfStdDuration(m.CommitsDuration)
-	n += 1 + l + sovAuction(uint64(l))
-	l = github_com_cosmos_gogoproto_types.SizeOfStdDuration(m.RevealsDuration)
-	n += 1 + l + sovAuction(uint64(l))
-	l = m.CommitFee.Size()
-	n += 1 + l + sovAuction(uint64(l))
-	l = m.RevealFee.Size()
-	n += 1 + l + sovAuction(uint64(l))
-	l = m.MinimumBid.Size()
-	n += 1 + l + sovAuction(uint64(l))
 	return n
 }
 
@@ -684,6 +643,10 @@ func (m *Auction) Size() (n int) {
 	if l > 0 {
 		n += 1 + l + sovAuction(uint64(l))
 	}
+	l = len(m.Kind)
+	if l > 0 {
+		n += 1 + l + sovAuction(uint64(l))
+	}
 	l = len(m.Status)
 	if l > 0 {
 		n += 1 + l + sovAuction(uint64(l))
@@ -704,14 +667,28 @@ func (m *Auction) Size() (n int) {
 	n += 1 + l + sovAuction(uint64(l))
 	l = m.MinimumBid.Size()
 	n += 1 + l + sovAuction(uint64(l))
-	l = len(m.WinnerAddress)
+	if len(m.WinnerAddresses) > 0 {
-	if l > 0 {
+		for _, s := range m.WinnerAddresses {
+			l = len(s)
 			n += 1 + l + sovAuction(uint64(l))
 		}
-	l = m.WinningBid.Size()
+	}
+	if len(m.WinningBids) > 0 {
+		for _, e := range m.WinningBids {
+			l = e.Size()
 			n += 1 + l + sovAuction(uint64(l))
+		}
+	}
 	l = m.WinningPrice.Size()
 	n += 1 + l + sovAuction(uint64(l))
+	l = m.MaxPrice.Size()
+	n += 1 + l + sovAuction(uint64(l))
+	if m.NumProviders != 0 {
+		n += 1 + sovAuction(uint64(m.NumProviders))
+	}
+	if m.FundsReleased {
+		n += 3
+	}
 	return n
 }
 
@@ -800,171 +777,6 @@ func (m *Params) Unmarshal(dAtA []byte) error {
 			return fmt.Errorf("proto: Params: illegal tag %d (wire type %d)", fieldNum, wire)
 		}
 		switch fieldNum {
-		case 1:
-			if wireType != 2 {
-				return fmt.Errorf("proto: wrong wireType = %d for field CommitsDuration", wireType)
-			}
-			var msglen int
-			for shift := uint(0); ; shift += 7 {
-				if shift >= 64 {
-					return ErrIntOverflowAuction
-				}
-				if iNdEx >= l {
-					return io.ErrUnexpectedEOF
-				}
-				b := dAtA[iNdEx]
-				iNdEx++
-				msglen |= int(b&0x7F) << shift
-				if b < 0x80 {
-					break
-				}
-			}
-			if msglen < 0 {
-				return ErrInvalidLengthAuction
-			}
-			postIndex := iNdEx + msglen
-			if postIndex < 0 {
-				return ErrInvalidLengthAuction
-			}
-			if postIndex > l {
-				return io.ErrUnexpectedEOF
-			}
-			if err := github_com_cosmos_gogoproto_types.StdDurationUnmarshal(&m.CommitsDuration, dAtA[iNdEx:postIndex]); err != nil {
-				return err
-			}
-			iNdEx = postIndex
-		case 2:
-			if wireType != 2 {
-				return fmt.Errorf("proto: wrong wireType = %d for field RevealsDuration", wireType)
-			}
-			var msglen int
-			for shift := uint(0); ; shift += 7 {
-				if shift >= 64 {
-					return ErrIntOverflowAuction
-				}
-				if iNdEx >= l {
-					return io.ErrUnexpectedEOF
-				}
-				b := dAtA[iNdEx]
-				iNdEx++
-				msglen |= int(b&0x7F) << shift
-				if b < 0x80 {
-					break
-				}
-			}
-			if msglen < 0 {
-				return ErrInvalidLengthAuction
-			}
-			postIndex := iNdEx + msglen
-			if postIndex < 0 {
-				return ErrInvalidLengthAuction
-			}
-			if postIndex > l {
-				return io.ErrUnexpectedEOF
-			}
-			if err := github_com_cosmos_gogoproto_types.StdDurationUnmarshal(&m.RevealsDuration, dAtA[iNdEx:postIndex]); err != nil {
-				return err
-			}
-			iNdEx = postIndex
-		case 3:
-			if wireType != 2 {
-				return fmt.Errorf("proto: wrong wireType = %d for field CommitFee", wireType)
-			}
-			var msglen int
-			for shift := uint(0); ; shift += 7 {
-				if shift >= 64 {
-					return ErrIntOverflowAuction
-				}
-				if iNdEx >= l {
-					return io.ErrUnexpectedEOF
-				}
-				b := dAtA[iNdEx]
-				iNdEx++
-				msglen |= int(b&0x7F) << shift
-				if b < 0x80 {
-					break
-				}
-			}
-			if msglen < 0 {
-				return ErrInvalidLengthAuction
-			}
-			postIndex := iNdEx + msglen
-			if postIndex < 0 {
-				return ErrInvalidLengthAuction
-			}
-			if postIndex > l {
-				return io.ErrUnexpectedEOF
-			}
-			if err := m.CommitFee.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
-				return err
-			}
-			iNdEx = postIndex
-		case 4:
-			if wireType != 2 {
-				return fmt.Errorf("proto: wrong wireType = %d for field RevealFee", wireType)
-			}
-			var msglen int
-			for shift := uint(0); ; shift += 7 {
-				if shift >= 64 {
-					return ErrIntOverflowAuction
-				}
-				if iNdEx >= l {
-					return io.ErrUnexpectedEOF
-				}
-				b := dAtA[iNdEx]
-				iNdEx++
-				msglen |= int(b&0x7F) << shift
-				if b < 0x80 {
-					break
-				}
-			}
-			if msglen < 0 {
-				return ErrInvalidLengthAuction
-			}
-			postIndex := iNdEx + msglen
-			if postIndex < 0 {
-				return ErrInvalidLengthAuction
-			}
-			if postIndex > l {
-				return io.ErrUnexpectedEOF
-			}
-			if err := m.RevealFee.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
-				return err
-			}
-			iNdEx = postIndex
-		case 5:
-			if wireType != 2 {
-				return fmt.Errorf("proto: wrong wireType = %d for field MinimumBid", wireType)
-			}
-			var msglen int
-			for shift := uint(0); ; shift += 7 {
-				if shift >= 64 {
-					return ErrIntOverflowAuction
-				}
-				if iNdEx >= l {
-					return io.ErrUnexpectedEOF
-				}
-				b := dAtA[iNdEx]
-				iNdEx++
-				msglen |= int(b&0x7F) << shift
-				if b < 0x80 {
-					break
-				}
-			}
-			if msglen < 0 {
-				return ErrInvalidLengthAuction
-			}
-			postIndex := iNdEx + msglen
-			if postIndex < 0 {
-				return ErrInvalidLengthAuction
-			}
-			if postIndex > l {
-				return io.ErrUnexpectedEOF
-			}
-			if err := m.MinimumBid.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
-				return err
-			}
-			iNdEx = postIndex
 		default:
 			iNdEx = preIndex
 			skippy, err := skipAuction(dAtA[iNdEx:])
@@ -1048,6 +860,38 @@ func (m *Auction) Unmarshal(dAtA []byte) error {
 			m.Id = string(dAtA[iNdEx:postIndex])
 			iNdEx = postIndex
 		case 2:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Kind", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowAuction
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				stringLen |= uint64(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			intStringLen := int(stringLen)
+			if intStringLen < 0 {
+				return ErrInvalidLengthAuction
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex < 0 {
+				return ErrInvalidLengthAuction
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.Kind = string(dAtA[iNdEx:postIndex])
+			iNdEx = postIndex
+		case 3:
 			if wireType != 2 {
 				return fmt.Errorf("proto: wrong wireType = %d for field Status", wireType)
 			}
@@ -1079,7 +923,7 @@ func (m *Auction) Unmarshal(dAtA []byte) error {
 			}
 			m.Status = string(dAtA[iNdEx:postIndex])
 			iNdEx = postIndex
-		case 3:
+		case 4:
 			if wireType != 2 {
 				return fmt.Errorf("proto: wrong wireType = %d for field OwnerAddress", wireType)
 			}
@@ -1111,7 +955,7 @@ func (m *Auction) Unmarshal(dAtA []byte) error {
 			}
 			m.OwnerAddress = string(dAtA[iNdEx:postIndex])
 			iNdEx = postIndex
-		case 4:
+		case 5:
 			if wireType != 2 {
 				return fmt.Errorf("proto: wrong wireType = %d for field CreateTime", wireType)
 			}
@@ -1144,7 +988,7 @@ func (m *Auction) Unmarshal(dAtA []byte) error {
 				return err
 			}
 			iNdEx = postIndex
-		case 5:
+		case 6:
 			if wireType != 2 {
 				return fmt.Errorf("proto: wrong wireType = %d for field CommitsEndTime", wireType)
 			}
@@ -1177,7 +1021,7 @@ func (m *Auction) Unmarshal(dAtA []byte) error {
 				return err
 			}
 			iNdEx = postIndex
-		case 6:
+		case 7:
 			if wireType != 2 {
 				return fmt.Errorf("proto: wrong wireType = %d for field RevealsEndTime", wireType)
 			}
@@ -1210,7 +1054,7 @@ func (m *Auction) Unmarshal(dAtA []byte) error {
 				return err
 			}
 			iNdEx = postIndex
-		case 7:
+		case 8:
 			if wireType != 2 {
 				return fmt.Errorf("proto: wrong wireType = %d for field CommitFee", wireType)
 			}
@@ -1243,7 +1087,7 @@ func (m *Auction) Unmarshal(dAtA []byte) error {
 				return err
 			}
 			iNdEx = postIndex
-		case 8:
+		case 9:
 			if wireType != 2 {
 				return fmt.Errorf("proto: wrong wireType = %d for field RevealFee", wireType)
 			}
@@ -1276,7 +1120,7 @@ func (m *Auction) Unmarshal(dAtA []byte) error {
 				return err
 			}
 			iNdEx = postIndex
-		case 9:
+		case 10:
 			if wireType != 2 {
 				return fmt.Errorf("proto: wrong wireType = %d for field MinimumBid", wireType)
 			}
@@ -1309,9 +1153,9 @@ func (m *Auction) Unmarshal(dAtA []byte) error {
 				return err
 			}
 			iNdEx = postIndex
-		case 10:
+		case 11:
 			if wireType != 2 {
-				return fmt.Errorf("proto: wrong wireType = %d for field WinnerAddress", wireType)
+				return fmt.Errorf("proto: wrong wireType = %d for field WinnerAddresses", wireType)
 			}
 			var stringLen uint64
 			for shift := uint(0); ; shift += 7 {
@@ -1339,11 +1183,11 @@ func (m *Auction) Unmarshal(dAtA []byte) error {
 			if postIndex > l {
 				return io.ErrUnexpectedEOF
 			}
-			m.WinnerAddress = string(dAtA[iNdEx:postIndex])
+			m.WinnerAddresses = append(m.WinnerAddresses, string(dAtA[iNdEx:postIndex]))
 			iNdEx = postIndex
-		case 11:
+		case 12:
 			if wireType != 2 {
-				return fmt.Errorf("proto: wrong wireType = %d for field WinningBid", wireType)
+				return fmt.Errorf("proto: wrong wireType = %d for field WinningBids", wireType)
 			}
 			var msglen int
 			for shift := uint(0); ; shift += 7 {
@@ -1370,11 +1214,12 @@ func (m *Auction) Unmarshal(dAtA []byte) error {
 			if postIndex > l {
 				return io.ErrUnexpectedEOF
 			}
-			if err := m.WinningBid.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
+			m.WinningBids = append(m.WinningBids, types.Coin{})
+			if err := m.WinningBids[len(m.WinningBids)-1].Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
 				return err
 			}
 			iNdEx = postIndex
-		case 12:
+		case 13:
 			if wireType != 2 {
 				return fmt.Errorf("proto: wrong wireType = %d for field WinningPrice", wireType)
 			}
@@ -1407,6 +1252,78 @@ func (m *Auction) Unmarshal(dAtA []byte) error {
 				return err
 			}
 			iNdEx = postIndex
+		case 14:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field MaxPrice", wireType)
+			}
+			var msglen int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowAuction
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				msglen |= int(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			if msglen < 0 {
+				return ErrInvalidLengthAuction
+			}
+			postIndex := iNdEx + msglen
+			if postIndex < 0 {
+				return ErrInvalidLengthAuction
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			if err := m.MaxPrice.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
+				return err
+			}
+			iNdEx = postIndex
+		case 15:
+			if wireType != 0 {
+				return fmt.Errorf("proto: wrong wireType = %d for field NumProviders", wireType)
+			}
+			m.NumProviders = 0
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowAuction
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				m.NumProviders |= int32(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+		case 16:
+			if wireType != 0 {
+				return fmt.Errorf("proto: wrong wireType = %d for field FundsReleased", wireType)
+			}
+			var v int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowAuction
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				v |= int(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			m.FundsReleased = bool(v != 0)
 		default:
 			iNdEx = preIndex
 			skippy, err := skipAuction(dAtA[iNdEx:])

x/auction/client/cli/tx.go

@@ -4,6 +4,7 @@ import (
 	"encoding/hex"
 	"fmt"
 	"os"
+	"strconv"
 	"time"
 
 	"github.com/cosmos/cosmos-sdk/client"
@@ -12,7 +13,6 @@ import (
 	sdk "github.com/cosmos/cosmos-sdk/types"
 
 	"github.com/spf13/cobra"
-	"github.com/spf13/viper"
 
 	wnsUtils "git.vdb.to/cerc-io/laconicd/utils"
 	auctiontypes "git.vdb.to/cerc-io/laconicd/x/auction"
@@ -48,6 +48,16 @@ func GetCmdCommitBid() *cobra.Command {
 				return err
 			}
 
+			// Take chain id passed by user
+			chainId, _ := cmd.Flags().GetString(flags.FlagChainID)
+			if chainId == "" {
+				// Take from config if not provided
+				chainId = clientCtx.ChainID
+				if chainId == "" {
+					return fmt.Errorf("--chain-id required")
+				}
+			}
+
 			bidAmount, err := sdk.ParseCoinNormalized(args[1])
 			if err != nil {
 				return err
@@ -58,7 +68,6 @@ func GetCmdCommitBid() *cobra.Command {
 				return err
 			}
 
-			chainId := viper.GetString("chain-id")
 			auctionId := args[0]
 
 			reveal := map[string]interface{}{
@@ -132,48 +141,63 @@ func GetCmdRevealBid() *cobra.Command {
 
 func GetCmdCreateAuction() *cobra.Command {
 	cmd := &cobra.Command{
-		Use:   "create [commits-duration] [reveals-duration] [commit-fee] [reveal-fee] [minimum-bid]",
+		Use:   "create [kind] [commits-duration] [reveals-duration] [commit-fee] [reveal-fee] [minimum-bid] [max-price] [num-providers]",
 		Short: "Create auction.",
-		Args:  cobra.ExactArgs(5),
+		Args:  cobra.ExactArgs(8),
 		RunE: func(cmd *cobra.Command, args []string) error {
 			clientCtx, err := client.GetClientTxContext(cmd)
 			if err != nil {
 				return err
 			}
 
-			commitsDuration, err := time.ParseDuration(args[0])
+			kind := args[0]
+
+			commitsDuration, err := time.ParseDuration(args[1])
 			if err != nil {
 				return err
 			}
 
-			revealsDuration, err := time.ParseDuration(args[1])
+			revealsDuration, err := time.ParseDuration(args[2])
 			if err != nil {
 				return err
 			}
 
-			commitFee, err := sdk.ParseCoinNormalized(args[2])
+			commitFee, err := sdk.ParseCoinNormalized(args[3])
 			if err != nil {
 				return err
 			}
 
-			revealFee, err := sdk.ParseCoinNormalized(args[3])
+			revealFee, err := sdk.ParseCoinNormalized(args[4])
 			if err != nil {
 				return err
 			}
 
-			minimumBid, err := sdk.ParseCoinNormalized(args[4])
+			minimumBid, err := sdk.ParseCoinNormalized(args[5])
 			if err != nil {
 				return err
 			}
 
-			params := auctiontypes.Params{
+			maxPrice, err := sdk.ParseCoinNormalized(args[6])
-				CommitsDuration: commitsDuration,
+			if err != nil {
-				RevealsDuration: revealsDuration,
+				return err
-				CommitFee:       commitFee,
-				RevealFee:       revealFee,
-				MinimumBid:      minimumBid,
 			}
-			msg := auctiontypes.NewMsgCreateAuction(params, clientCtx.GetFromAddress())
+
+			numProviders, err := strconv.ParseInt(args[7], 10, 32)
+			if err != nil {
+				return err
+			}
+
+			msg := auctiontypes.NewMsgCreateAuction(
+				kind,
+				commitsDuration,
+				revealsDuration,
+				commitFee,
+				revealFee,
+				minimumBid,
+				maxPrice,
+				int32(numProviders),
+				clientCtx.GetFromAddress(),
+			)
 			err = msg.ValidateBasic()
 			if err != nil {
 				return err

x/auction/events.go

@@ -4,6 +4,7 @@ const (
 	EventTypeCreateAuction = "create-auction"
 	EventTypeCommitBid     = "commit-bid"
 	EventTypeRevealBid     = "reveal-bid"
+	EventTypeReleaseFunds  = "release-funds"
 
 	AttributeKeyCommitsDuration = "commits-duration"
 	AttributeKeyRevealsDuration = "reveals-duration"

x/auction/keeper/keeper.go

@@ -5,6 +5,7 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
+	"slices"
 	"time"
 
 	"cosmossdk.io/collections"
@@ -12,6 +13,7 @@ import (
 	storetypes "cosmossdk.io/core/store"
 	errorsmod "cosmossdk.io/errors"
 	"cosmossdk.io/log"
+	"cosmossdk.io/math"
 
 	"github.com/cosmos/cosmos-sdk/codec"
 	sdk "github.com/cosmos/cosmos-sdk/types"
@@ -339,8 +341,18 @@ func (k Keeper) CreateAuction(ctx sdk.Context, msg auctiontypes.MsgCreateAuction
 	commitsEndTime := now.Add(msg.CommitsDuration)
 	revealsEndTime := now.Add(msg.CommitsDuration + msg.RevealsDuration)
 
+	if msg.Kind == auctiontypes.AuctionKindProvider {
+		totalLockedAmount := sdk.NewCoin(msg.MaxPrice.Denom, msg.MaxPrice.Amount.MulRaw(int64(msg.NumProviders)))
+
+		sdkErr := k.bankKeeper.SendCoinsFromAccountToModule(ctx, signerAddress, auctiontypes.ModuleName, sdk.NewCoins(totalLockedAmount))
+		if sdkErr != nil {
+			return nil, errorsmod.Wrap(sdkErr, "Auction error transferring maximum price amount")
+		}
+	}
+
 	auction := auctiontypes.Auction{
 		Id:             auctionId,
+		Kind:           msg.Kind,
 		Status:         auctiontypes.AuctionStatusCommitPhase,
 		OwnerAddress:   signerAddress.String(),
 		CreateTime:     now,
@@ -349,6 +361,8 @@ func (k Keeper) CreateAuction(ctx sdk.Context, msg auctiontypes.MsgCreateAuction
 		CommitFee:      msg.CommitFee,
 		RevealFee:      msg.RevealFee,
 		MinimumBid:     msg.MinimumBid,
+		MaxPrice:       msg.MaxPrice,
+		NumProviders:   msg.NumProviders,
 	}
 
 	// Save auction in store.
@@ -516,15 +530,21 @@ func (k Keeper) RevealBid(ctx sdk.Context, msg auctiontypes.MsgRevealBid) (*auct
 		return nil, errorsmod.Wrap(sdkerrors.ErrInvalidRequest, "Invalid reveal bid amount.")
 	}
 
-	if bidAmount.IsLT(auction.MinimumBid) {
+	if auction.Kind == auctiontypes.AuctionKindVickrey && bidAmount.IsLT(auction.MinimumBid) {
 		return nil, errorsmod.Wrap(sdkerrors.ErrInvalidRequest, "Bid is lower than minimum bid.")
 	}
 
+	if auction.Kind == auctiontypes.AuctionKindProvider && auction.MaxPrice.IsLT(bidAmount) {
+		return nil, errorsmod.Wrap(sdkerrors.ErrInvalidRequest, "Bid is higher than max price.")
+	}
+
 	// Lock bid amount.
+	if auction.Kind == auctiontypes.AuctionKindVickrey {
 		sdkErr := k.bankKeeper.SendCoinsFromAccountToModule(ctx, signerAddress, auctiontypes.ModuleName, sdk.NewCoins(bidAmount))
 		if sdkErr != nil {
 			return nil, sdkErr
 		}
+	}
 
 	// Update bid.
 	bid.BidAmount = bidAmount
@@ -606,9 +626,15 @@ func (k Keeper) processAuctionPhases(ctx sdk.Context) error {
 
 		// If auction has expired, pick a winner from revealed bids.
 		if auction.Status == auctiontypes.AuctionStatusExpired {
+			if auction.Kind == auctiontypes.AuctionKindVickrey {
 				if err = k.pickAuctionWinner(ctx, auction); err != nil {
 					return err
 				}
+			} else {
+				if err = k.pickProviderAuctionWinners(ctx, auction); err != nil {
+					return err
+				}
+			}
 		}
 	}
 
@@ -635,6 +661,7 @@ func (k Keeper) deleteCompletedAuctions(ctx sdk.Context) error {
 	return nil
 }
 
+// Pick winner for vickrey auction
 func (k Keeper) pickAuctionWinner(ctx sdk.Context, auction *auctiontypes.Auction) error {
 	k.Logger(ctx).Info(fmt.Sprintf("Picking auction %s winner.", auction.Id))
 
@@ -686,17 +713,17 @@ func (k Keeper) pickAuctionWinner(ctx sdk.Context, auction *auctiontypes.Auction
 	auction.Status = auctiontypes.AuctionStatusCompleted
 
 	if highestBid != nil {
-		auction.WinnerAddress = highestBid.BidderAddress
+		auction.WinningBids = []sdk.Coin{highestBid.BidAmount}
-		auction.WinningBid = highestBid.BidAmount
+		auction.WinnerAddresses = []string{highestBid.BidderAddress}
 
 		// Winner pays 2nd price, if a 2nd price exists.
 		auction.WinningPrice = highestBid.BidAmount
 		if secondHighestBid != nil {
 			auction.WinningPrice = secondHighestBid.BidAmount
 		}
-		k.Logger(ctx).Info(fmt.Sprintf("Auction %s winner %s.", auction.Id, auction.WinnerAddress))
+		k.Logger(ctx).Info(fmt.Sprintf("Auction %s winner %s.", auction.Id, auction.WinnerAddresses[0]))
-		k.Logger(ctx).Info(fmt.Sprintf("Auction %s winner bid %s.", auction.Id, auction.WinningBid.String()))
+		k.Logger(ctx).Info(fmt.Sprintf("Auction %s winner bid %s.", auction.Id, auction.WinningBids[0].String()))
-		k.Logger(ctx).Info(fmt.Sprintf("Auction %s winner price %s.", auction.Id, auction.WinningPrice.String()))
+		k.Logger(ctx).Info(fmt.Sprintf("Auction %s winning price %s.", auction.Id, auction.WinningPrice.String()))
 	} else {
 		k.Logger(ctx).Info(fmt.Sprintf("Auction %s has no valid revealed bids (no winner).", auction.Id))
 	}
@@ -730,8 +757,8 @@ func (k Keeper) pickAuctionWinner(ctx sdk.Context, auction *auctiontypes.Auction
 	}
 
 	// Process winner account (if nobody bids, there won't be a winner).
-	if auction.WinnerAddress != "" {
+	if len(auction.WinnerAddresses) != 0 {
-		winnerAddress, err := sdk.AccAddressFromBech32(auction.WinnerAddress)
+		winnerAddress, err := sdk.AccAddressFromBech32(auction.WinnerAddresses[0])
 		if err != nil {
 			k.Logger(ctx).Error(fmt.Sprintf("Invalid winner address. %v", err))
 			panic("Invalid winner address.")
@@ -773,3 +800,173 @@ func (k Keeper) pickAuctionWinner(ctx sdk.Context, auction *auctiontypes.Auction
 
 	return nil
 }
+
+// Pick winner for provider auction
+func (k Keeper) pickProviderAuctionWinners(ctx sdk.Context, auction *auctiontypes.Auction) error {
+	k.Logger(ctx).Info(fmt.Sprintf("Picking auction %s winners.", auction.Id))
+
+	bids, err := k.GetBids(ctx, auction.Id)
+	if err != nil {
+		return err
+	}
+
+	revealedBids := make([]*auctiontypes.Bid, 0, len(bids))
+	for _, bid := range bids {
+		k.Logger(ctx).Info(fmt.Sprintf("Processing bid %s %s", bid.BidderAddress, bid.BidAmount.String()))
+
+		// Only consider revealed bids.
+		if bid.Status != auctiontypes.BidStatusRevealed {
+			k.Logger(ctx).Info(fmt.Sprintf("Ignoring unrevealed bid %s %s", bid.BidderAddress, bid.BidAmount.String()))
+			continue
+		}
+
+		revealedBids = append(revealedBids, bid)
+	}
+
+	// Sort the valid bids
+	slices.SortStableFunc(revealedBids, func(a, b *auctiontypes.Bid) int {
+		if a.BidAmount.Amount.LT(b.BidAmount.Amount) {
+			return -1
+		} else if a.BidAmount.Amount.GT(b.BidAmount.Amount) {
+			return 1
+		}
+		return 0
+	})
+
+	// Take best min(len(revealedBids), auction.NumProviders) bids
+	numWinners := int(auction.NumProviders)
+	if len(revealedBids) < numWinners {
+		numWinners = len(revealedBids)
+	}
+	winnerBids := revealedBids[:numWinners]
+
+	auction.Status = auctiontypes.AuctionStatusCompleted
+
+	if len(winnerBids) > 0 {
+		winnerAddresses := make([]string, len(winnerBids))
+		winningBids := make([]sdk.Coin, len(winnerBids))
+		for i, bid := range winnerBids {
+			winnerAddresses[i] = bid.BidderAddress
+			winningBids[i] = bid.BidAmount
+		}
+
+		auction.WinnerAddresses = winnerAddresses
+		auction.WinningBids = winningBids
+
+		// The last best bid is the winning price
+		auction.WinningPrice = winnerBids[len(winnerBids)-1].BidAmount
+
+		for _, bid := range winnerBids {
+			k.Logger(ctx).Info(fmt.Sprintf("Auction %s winner address: %s, bid amount: %s.", auction.Id, bid.BidderAddress, bid.BidAmount.String()))
+		}
+		k.Logger(ctx).Info(fmt.Sprintf("Auction %s winning price %s.", auction.Id, auction.WinningPrice.String()))
+	} else {
+		k.Logger(ctx).Info(fmt.Sprintf("Auction %s has no valid revealed bids (no winner).", auction.Id))
+	}
+
+	if err := k.SaveAuction(ctx, auction); err != nil {
+		return err
+	}
+
+	for _, bid := range bids {
+		bidderAddress, err := sdk.AccAddressFromBech32(bid.BidderAddress)
+		if err != nil {
+			k.Logger(ctx).Error(fmt.Sprintf("Invalid bidderAddress address. %v", err))
+			panic("Invalid bidder address.")
+		}
+
+		if bid.Status == auctiontypes.BidStatusRevealed {
+			// Send reveal fee back to bidders that've revealed the bid.
+			sdkErr := k.bankKeeper.SendCoinsFromModuleToAccount(ctx, auctiontypes.ModuleName, bidderAddress, sdk.NewCoins(bid.RevealFee))
+			if sdkErr != nil {
+				k.Logger(ctx).Error(fmt.Sprintf("Auction error returning reveal fee: %v", sdkErr))
+				panic(sdkErr)
+			}
+		}
+	}
+
+	// Send back any leftover locked amount to auction creator
+	// All of it in case of no winners
+	totalLockedAmount := auction.MaxPrice.Amount.Mul(math.NewInt(int64(auction.NumProviders)))
+	totalAmountPaid := auction.WinningPrice.Amount.Mul(math.NewInt(int64(len(auction.WinnerAddresses))))
+	creatorLeftOverAmount := sdk.NewCoin(auction.MaxPrice.Denom, totalLockedAmount.Sub(totalAmountPaid))
+
+	ownerAccAddress, err := sdk.AccAddressFromBech32(auction.OwnerAddress)
+	if err != nil {
+		k.Logger(ctx).Error(fmt.Sprintf("Invalid auction owner address. %v", err))
+		panic("Invalid auction owner address.")
+	}
+
+	sdkErr := k.bankKeeper.SendCoinsFromModuleToAccount(
+		ctx,
+		auctiontypes.ModuleName,
+		ownerAccAddress,
+		sdk.NewCoins(creatorLeftOverAmount),
+	)
+	if sdkErr != nil {
+		k.Logger(ctx).Error(fmt.Sprintf("Auction error returning leftover locked amount: %v", sdkErr))
+		panic(sdkErr)
+	}
+
+	// Notify other modules (hook).
+	k.Logger(ctx).Info(fmt.Sprintf("Auction %s notifying %d modules.", auction.Id, len(k.usageKeepers)))
+	for _, keeper := range k.usageKeepers {
+		k.Logger(ctx).Info(fmt.Sprintf("Auction %s notifying module %s.", auction.Id, keeper.ModuleName()))
+		keeper.OnAuctionWinnerSelected(ctx, auction.Id)
+	}
+
+	return nil
+}
+
+func (k Keeper) ReleaseFunds(ctx sdk.Context, msg auctiontypes.MsgReleaseFunds) (*auctiontypes.Auction, error) {
+	auction, err := k.GetAuctionById(ctx, msg.AuctionId)
+	if err != nil {
+		return nil, err
+	}
+
+	if auction.Kind != auctiontypes.AuctionKindProvider {
+		return nil, errorsmod.Wrap(sdkerrors.ErrInvalidRequest, "Auction kind must be provider.")
+	}
+
+	// Only the auction owner can release funds.
+	if msg.Signer != auction.OwnerAddress {
+		return nil, errorsmod.Wrap(sdkerrors.ErrUnauthorized, "Only auction owner can release funds.")
+	}
+
+	if auction.Status != auctiontypes.AuctionStatusCompleted {
+		return nil, errorsmod.Wrap(sdkerrors.ErrInvalidRequest, "Auction is not completed.")
+	}
+
+	if auction.FundsReleased {
+		return nil, errorsmod.Wrap(sdkerrors.ErrInvalidRequest, "Auction funds already released.")
+	}
+
+	// Mark funds as released in the stored auction
+	auction.FundsReleased = true
+	if err = k.SaveAuction(ctx, &auction); err != nil {
+		return nil, err
+	}
+
+	// Process winner accounts.
+	for _, winnerAddress := range auction.WinnerAddresses {
+		winnerAccAddress, err := sdk.AccAddressFromBech32(winnerAddress)
+		if err != nil {
+			k.Logger(ctx).Error(fmt.Sprintf("Invalid winner address. %v", err))
+			panic("Invalid winner address.")
+		}
+
+		// Send winning price to winning bidders
+		sdkErr := k.bankKeeper.SendCoinsFromModuleToAccount(
+			ctx,
+			auctiontypes.ModuleName,
+			winnerAccAddress,
+			sdk.NewCoins(auction.WinningPrice),
+		)
+		if sdkErr != nil {
+			k.Logger(ctx).Error(fmt.Sprintf("Auction error sending funds to winner: %v", sdkErr))
+			panic(sdkErr)
+		}
+	}
+
+	return &auction, err
+}

x/auction/keeper/msg_server.go

@@ -56,7 +56,6 @@ func (ms msgServer) CreateAuction(c context.Context, msg *auctiontypes.MsgCreate
 }
 
 // CommitBid is the command for committing a bid
-// nolint: all
 func (ms msgServer) CommitBid(c context.Context, msg *auctiontypes.MsgCommitBid) (*auctiontypes.MsgCommitBidResponse, error) {
 	if err := msg.ValidateBasic(); err != nil {
 		return nil, err
@@ -94,7 +93,6 @@ func (ms msgServer) CommitBid(c context.Context, msg *auctiontypes.MsgCommitBid)
 }
 
 // RevealBid is the command for revealing a bid
-// nolint: all
 func (ms msgServer) RevealBid(c context.Context, msg *auctiontypes.MsgRevealBid) (*auctiontypes.MsgRevealBidResponse, error) {
 	if err := msg.ValidateBasic(); err != nil {
 		return nil, err
@@ -149,3 +147,39 @@ func (ms msgServer) UpdateParams(c context.Context, msg *auctiontypes.MsgUpdateP
 
 	return &auctiontypes.MsgUpdateParamsResponse{}, nil
 }
+
+// ReleaseFunds is the command to pay the winning amounts to provider auction winners
+func (ms msgServer) ReleaseFunds(c context.Context, msg *auctiontypes.MsgReleaseFunds) (*auctiontypes.MsgReleaseFundsResponse, error) {
+	if err := msg.ValidateBasic(); err != nil {
+		return nil, err
+	}
+
+	ctx := sdk.UnwrapSDKContext(c)
+	ctx = *utils.CtxWithCustomKVGasConfig(&ctx)
+
+	signerAddress, err := sdk.AccAddressFromBech32(msg.Signer)
+	if err != nil {
+		return nil, err
+	}
+
+	resp, err := ms.k.ReleaseFunds(ctx, *msg)
+	if err != nil {
+		return nil, err
+	}
+
+	ctx.EventManager().EmitEvents(sdk.Events{
+		sdk.NewEvent(
+			auctiontypes.EventTypeReleaseFunds,
+			sdk.NewAttribute(auctiontypes.AttributeKeyAuctionId, msg.AuctionId),
+		),
+		sdk.NewEvent(
+			sdk.EventTypeMessage,
+			sdk.NewAttribute(sdk.AttributeKeyModule, auctiontypes.AttributeValueCategory),
+			sdk.NewAttribute(auctiontypes.AttributeKeySigner, signerAddress.String()),
+		),
+	})
+
+	utils.LogTxGasConsumed(ctx, ms.k.Logger(ctx), "ReleaseFunds")
+
+	return &auctiontypes.MsgReleaseFundsResponse{Auction: resp}, nil
+}

x/auction/module/autocli.go

@@ -81,14 +81,19 @@ func (am AppModule) AutoCLIOptions() *autocliv1.ModuleOptions {
 			RpcCommandOptions: []*autocliv1.RpcCommandOptions{
 				{
 					RpcMethod: "CreateAuction",
-					Use:       "create [commits-duration] [reveals-duration] [commit-fee] [reveal-fee] [minimum-bid]",
+					Use:       "create [commits-duration] [reveals-duration] [commit-fee] [reveal-fee]",
 					Short:     "Create an auction",
 					PositionalArgs: []*autocliv1.PositionalArgDescriptor{
 						{ProtoField: "commits_duration"},
 						{ProtoField: "reveals_duration"},
 						{ProtoField: "commit_fee"},
 						{ProtoField: "reveal_fee"},
-						{ProtoField: "minimum_bid"},
+					},
+					FlagOptions: map[string]*autocliv1.FlagOptions{
+						"kind":          {Name: "kind", DefaultValue: "vickrey", Usage: "Auction kind (vickrey|provider) (default: vickrey)"},
+						"minimum_bid":   {Name: "minimum-bid", Usage: "Minimum bid (required for vickrey auctions)"},
+						"max_price":     {Name: "max-price", Usage: "Max price (required for provider auctions)"},
+						"num_providers": {Name: "num-providers", Usage: "Number of desired providers (required for provider auctions)"},
 					},
 				},
 				{

x/auction/msgs.go

@@ -1,6 +1,9 @@
 package auction
 
 import (
+	"fmt"
+	time "time"
+
 	errorsmod "cosmossdk.io/errors"
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
@@ -13,13 +16,26 @@ var (
 )
 
 // NewMsgCreateAuction is the constructor function for MsgCreateAuction.
-func NewMsgCreateAuction(params Params, signer sdk.AccAddress) MsgCreateAuction {
+func NewMsgCreateAuction(
+	kind string,
+	commitsDuration time.Duration,
+	revealsDuration time.Duration,
+	commitFee sdk.Coin,
+	revealFee sdk.Coin,
+	minimumBid sdk.Coin,
+	maxPrice sdk.Coin,
+	numProviders int32,
+	signer sdk.AccAddress,
+) MsgCreateAuction {
 	return MsgCreateAuction{
-		CommitsDuration: params.CommitsDuration,
+		CommitsDuration: commitsDuration,
-		RevealsDuration: params.RevealsDuration,
+		RevealsDuration: revealsDuration,
-		CommitFee:       params.CommitFee,
+		CommitFee:       commitFee,
-		RevealFee:       params.RevealFee,
+		RevealFee:       revealFee,
-		MinimumBid:      params.MinimumBid,
+		MinimumBid:      minimumBid,
+		MaxPrice:        maxPrice,
+		Kind:            kind,
+		NumProviders:    numProviders,
 		Signer:          signer.String(),
 	}
 }
@@ -33,22 +49,53 @@ func NewMsgCommitBid(auctionId string, commitHash string, signer sdk.AccAddress)
 	}
 }
 
+// NewMsgRevealBid is the constructor function for MsgRevealBid.
+func NewMsgRevealBid(auctionId string, reveal string, signer sdk.AccAddress) MsgRevealBid {
+	return MsgRevealBid{
+		AuctionId: auctionId,
+		Reveal:    reveal,
+		Signer:    signer.String(),
+	}
+}
+
+// NewMsgReleaseFunds is the constructor function for MsgReleaseFunds.
+func NewMsgReleaseFunds(auctionId string, signer sdk.AccAddress) MsgReleaseFunds {
+	return MsgReleaseFunds{
+		AuctionId: auctionId,
+		Signer:    signer.String(),
+	}
+}
+
 // ValidateBasic Implements Msg.
 func (msg MsgCreateAuction) ValidateBasic() error {
 	if msg.Signer == "" {
 		return errorsmod.Wrap(sdkerrors.ErrInvalidAddress, msg.Signer)
 	}
 
+	if msg.Kind != AuctionKindVickrey && msg.Kind != AuctionKindProvider {
+		return errorsmod.Wrap(sdkerrors.ErrInvalidRequest, fmt.Sprintf("auction kind should be one of %s | %s", AuctionKindVickrey, AuctionKindProvider))
+	}
+
 	if msg.CommitsDuration <= 0 {
-		return errorsmod.Wrap(sdkerrors.ErrInvalidRequest, "commit phase duration invalid.")
+		return errorsmod.Wrap(sdkerrors.ErrInvalidRequest, "commit phase duration invalid")
 	}
 
 	if msg.RevealsDuration <= 0 {
-		return errorsmod.Wrap(sdkerrors.ErrInvalidRequest, "reveal phase duration invalid.")
+		return errorsmod.Wrap(sdkerrors.ErrInvalidRequest, "reveal phase duration invalid")
 	}
 
-	if !msg.MinimumBid.IsPositive() {
+	if msg.Kind == AuctionKindVickrey && !msg.MinimumBid.IsPositive() {
-		return errorsmod.Wrap(sdkerrors.ErrInvalidRequest, "minimum bid should be greater than zero.")
+		return errorsmod.Wrap(sdkerrors.ErrInvalidRequest, fmt.Sprintf("minimum bid should be greater than zero for %s auction", AuctionKindVickrey))
+	}
+
+	if msg.Kind == AuctionKindProvider {
+		if !msg.MaxPrice.IsPositive() {
+			return errorsmod.Wrap(sdkerrors.ErrInvalidRequest, fmt.Sprintf("max price should be greater than zero for %s auction", AuctionKindProvider))
+		}
+
+		if msg.NumProviders <= 0 {
+			return errorsmod.Wrap(sdkerrors.ErrInvalidRequest, fmt.Sprintf("num providers should be greater than zero for %s auction", AuctionKindProvider))
+		}
 	}
 
 	return nil
@@ -71,15 +118,6 @@ func (msg MsgCommitBid) ValidateBasic() error {
 	return nil
 }
 
-// NewMsgRevealBid is the constructor function for MsgRevealBid.
-func NewMsgRevealBid(auctionId string, reveal string, signer sdk.AccAddress) MsgRevealBid {
-	return MsgRevealBid{
-		AuctionId: auctionId,
-		Reveal:    reveal,
-		Signer:    signer.String(),
-	}
-}
-
 // ValidateBasic Implements Msg.
 func (msg MsgRevealBid) ValidateBasic() error {
 	if msg.Signer == "" {
@@ -96,3 +134,16 @@ func (msg MsgRevealBid) ValidateBasic() error {
 
 	return nil
 }
+
+// ValidateBasic Implements Msg.
+func (msg MsgReleaseFunds) ValidateBasic() error {
+	if msg.Signer == "" {
+		return errorsmod.Wrap(sdkerrors.ErrInvalidAddress, "invalid signer address")
+	}
+
+	if msg.AuctionId == "" {
+		return errorsmod.Wrap(sdkerrors.ErrInvalidRequest, "invalid auction id")
+	}
+
+	return nil
+}

x/auction/params.go

@@ -1,143 +1,11 @@
 package auction
 
-import (
-	"errors"
-	fmt "fmt"
-	"strings"
-	time "time"
-
-	sdkmath "cosmossdk.io/math"
-	sdk "github.com/cosmos/cosmos-sdk/types"
-)
-
-var (
-	DefaultCommitsDuration = 5 * time.Minute
-	DefaultRevealsDuration = 5 * time.Minute
-
-	DefaultCommitFee  = sdkmath.NewInt(1000)    // 10^3 alnt
-	DefaultRevealFee  = sdkmath.NewInt(1000)    // 10^3 alnt
-	DefaultMinimumBid = sdkmath.NewInt(1000000) // 10^6 alnt
-)
-
-func NewParams(commitsDuration time.Duration, revealsDuration time.Duration, commitFee sdk.Coin, revealFee sdk.Coin, minimumBid sdk.Coin) Params {
-	return Params{
-		CommitsDuration: commitsDuration,
-		RevealsDuration: revealsDuration,
-		CommitFee:       commitFee,
-		RevealFee:       revealFee,
-		MinimumBid:      minimumBid,
-	}
-}
-
 // DefaultParams returns a default set of parameters.
 func DefaultParams() Params {
-	return Params{
+	return Params{}
-		CommitsDuration: DefaultCommitsDuration,
-		RevealsDuration: DefaultRevealsDuration,
-		CommitFee:       sdk.NewCoin(sdk.DefaultBondDenom, DefaultCommitFee),
-		RevealFee:       sdk.NewCoin(sdk.DefaultBondDenom, DefaultRevealFee),
-		MinimumBid:      sdk.NewCoin(sdk.DefaultBondDenom, DefaultMinimumBid),
-	}
-}
-
-// String returns a human readable string representation of the parameters.
-func (p Params) String() string {
-	var sb strings.Builder
-	sb.WriteString("Params: \n")
-	sb.WriteString(fmt.Sprintf("CommitsDuration: %s\n", p.CommitsDuration.String()))
-	sb.WriteString(fmt.Sprintf("RevealsDuration: %s\n", p.RevealsDuration.String()))
-	sb.WriteString(fmt.Sprintf("CommitFee: %s\n", p.CommitFee.String()))
-	sb.WriteString(fmt.Sprintf("RevealFee: %s\n", p.RevealFee.String()))
-	sb.WriteString(fmt.Sprintf("MinimumBid: %s\n", p.MinimumBid.String()))
-	return sb.String()
 }
 
 // Validate a set of params.
 func (p Params) Validate() error {
-	if err := validateCommitsDuration(p.CommitsDuration); err != nil {
-		return err
-	}
-
-	if err := validateRevealsDuration(p.RevealsDuration); err != nil {
-		return err
-	}
-
-	if err := validateCommitFee(p.CommitFee); err != nil {
-		return err
-	}
-
-	if err := validateRevealFee(p.RevealFee); err != nil {
-		return err
-	}
-
-	if err := validateMinimumBid(p.MinimumBid); err != nil {
-		return err
-	}
-
-	return nil
-}
-
-func validateCommitsDuration(i interface{}) error {
-	v, ok := i.(time.Duration)
-	if !ok {
-		return fmt.Errorf("invalid parameter type: %T", i)
-	}
-
-	if v < 0 {
-		return errors.New("commits duration cannot be negative")
-	}
-
-	return nil
-}
-
-func validateRevealsDuration(i interface{}) error {
-	v, ok := i.(time.Duration)
-	if !ok {
-		return fmt.Errorf("invalid parameter type: %T", i)
-	}
-
-	if v < 0 {
-		return errors.New("reveals duration cannot be negative")
-	}
-
-	return nil
-}
-
-func validateCommitFee(i interface{}) error {
-	v, ok := i.(sdk.Coin)
-	if !ok {
-		return fmt.Errorf("invalid parameter type: %T", i)
-	}
-
-	if v.Amount.IsNegative() {
-		return errors.New("commit fee must be positive")
-	}
-
-	return nil
-}
-
-func validateRevealFee(i interface{}) error {
-	v, ok := i.(sdk.Coin)
-	if !ok {
-		return fmt.Errorf("invalid parameter type: %T", i)
-	}
-
-	if v.Amount.IsNegative() {
-		return errors.New("reveal fee must be positive")
-	}
-
-	return nil
-}
-
-func validateMinimumBid(i interface{}) error {
-	v, ok := i.(sdk.Coin)
-	if !ok {
-		return fmt.Errorf("invalid parameter type: %T", i)
-	}
-
-	if v.Amount.IsNegative() {
-		return errors.New("minimum bid must be positive")
-	}
-
 	return nil
 }

x/auction/tx.pb.go

@@ -38,18 +38,27 @@ const _ = proto.GoGoProtoPackageIsVersion3 // please upgrade the proto package
 
 // MsgCreateAuction defines a create auction message
 type MsgCreateAuction struct {
-	// Duration of the commits phase in seconds
-	CommitsDuration time.Duration `protobuf:"bytes,1,opt,name=commits_duration,json=commitsDuration,proto3,stdduration" json:"commits_duration" json:"commits_duration" yaml:"commits_duration"`
-	// Duration of the reveals phase in seconds
-	RevealsDuration time.Duration `protobuf:"bytes,2,opt,name=reveals_duration,json=revealsDuration,proto3,stdduration" json:"reveals_duration" json:"reveals_duration" yaml:"reveals_duration"`
-	// Commit fees
-	CommitFee types.Coin `protobuf:"bytes,3,opt,name=commit_fee,json=commitFee,proto3" json:"commit_fee" json:"commit_fee" yaml:"commit_fee"`
-	// Reveal fees
-	RevealFee types.Coin `protobuf:"bytes,4,opt,name=reveal_fee,json=revealFee,proto3" json:"reveal_fee" json:"reveal_fee" yaml:"reveal_fee"`
-	// Minimum acceptable bid amount
-	MinimumBid types.Coin `protobuf:"bytes,5,opt,name=minimum_bid,json=minimumBid,proto3" json:"minimum_bid" json:"minimum_bid" yaml:"minimum_bid"`
 	// Address of the signer
-	Signer string `protobuf:"bytes,6,opt,name=signer,proto3" json:"signer,omitempty" json:"signer" yaml:"signer"`
+	Signer string `protobuf:"bytes,1,opt,name=signer,proto3" json:"signer,omitempty" json:"signer" yaml:"signer"`
+	// Auction kind (vickrey | provider)
+	Kind string `protobuf:"bytes,2,opt,name=kind,proto3" json:"kind,omitempty" json:"kind" yaml:"kind"`
+	// Duration of the commits phase in seconds
+	CommitsDuration time.Duration `protobuf:"bytes,3,opt,name=commits_duration,json=commitsDuration,proto3,stdduration" json:"commits_duration" json:"commits_duration" yaml:"commits_duration"`
+	// Duration of the reveals phase in seconds
+	RevealsDuration time.Duration `protobuf:"bytes,4,opt,name=reveals_duration,json=revealsDuration,proto3,stdduration" json:"reveals_duration" json:"reveals_duration" yaml:"reveals_duration"`
+	// Commit fees
+	CommitFee types.Coin `protobuf:"bytes,5,opt,name=commit_fee,json=commitFee,proto3" json:"commit_fee" json:"commit_fee" yaml:"commit_fee"`
+	// Reveal fees
+	RevealFee types.Coin `protobuf:"bytes,6,opt,name=reveal_fee,json=revealFee,proto3" json:"reveal_fee" json:"reveal_fee" yaml:"reveal_fee"`
+	// Minimum acceptable bid amount
+	// Only applicable in vickrey auctions
+	MinimumBid types.Coin `protobuf:"bytes,7,opt,name=minimum_bid,json=minimumBid,proto3" json:"minimum_bid" json:"minimum_bid" yaml:"minimum_bid"`
+	// Maximum acceptable bid amount
+	// Only applicable in provider auctions
+	MaxPrice types.Coin `protobuf:"bytes,8,opt,name=max_price,json=maxPrice,proto3" json:"max_price" json:"max_price" yaml:"max_price"`
+	// Number of desired providers (num of auction winners)
+	// Only applicable in provider auctions
+	NumProviders int32 `protobuf:"varint,9,opt,name=num_providers,json=numProviders,proto3" json:"num_providers,omitempty"`
 }
 
 func (m *MsgCreateAuction) Reset()         { *m = MsgCreateAuction{} }
@@ -384,6 +393,87 @@ func (m *MsgUpdateParamsResponse) XXX_DiscardUnknown() {
 
 var xxx_messageInfo_MsgUpdateParamsResponse proto.InternalMessageInfo
 
+// ReleaseFunds defines the message to pay the winners of provider auctions
+type MsgReleaseFunds struct {
+	// Auction id
+	AuctionId string `protobuf:"bytes,1,opt,name=auction_id,json=auctionId,proto3" json:"auction_id,omitempty" json:"auction_id" yaml:"auction_id"`
+	// Address of the signer
+	Signer string `protobuf:"bytes,2,opt,name=signer,proto3" json:"signer,omitempty" json:"signer" yaml:"signer"`
+}
+
+func (m *MsgReleaseFunds) Reset()         { *m = MsgReleaseFunds{} }
+func (m *MsgReleaseFunds) String() string { return proto.CompactTextString(m) }
+func (*MsgReleaseFunds) ProtoMessage()    {}
+func (*MsgReleaseFunds) Descriptor() ([]byte, []int) {
+	return fileDescriptor_70947cda59e835fd, []int{8}
+}
+func (m *MsgReleaseFunds) XXX_Unmarshal(b []byte) error {
+	return m.Unmarshal(b)
+}
+func (m *MsgReleaseFunds) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	if deterministic {
+		return xxx_messageInfo_MsgReleaseFunds.Marshal(b, m, deterministic)
+	} else {
+		b = b[:cap(b)]
+		n, err := m.MarshalToSizedBuffer(b)
+		if err != nil {
+			return nil, err
+		}
+		return b[:n], nil
+	}
+}
+func (m *MsgReleaseFunds) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_MsgReleaseFunds.Merge(m, src)
+}
+func (m *MsgReleaseFunds) XXX_Size() int {
+	return m.Size()
+}
+func (m *MsgReleaseFunds) XXX_DiscardUnknown() {
+	xxx_messageInfo_MsgReleaseFunds.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_MsgReleaseFunds proto.InternalMessageInfo
+
+// MsgReleaseFundsResponse returns the state of the auction after releasing the
+// funds
+type MsgReleaseFundsResponse struct {
+	// Auction details
+	Auction *Auction `protobuf:"bytes,1,opt,name=auction,proto3" json:"auction,omitempty" json:"auction" yaml:"auction"`
+}
+
+func (m *MsgReleaseFundsResponse) Reset()         { *m = MsgReleaseFundsResponse{} }
+func (m *MsgReleaseFundsResponse) String() string { return proto.CompactTextString(m) }
+func (*MsgReleaseFundsResponse) ProtoMessage()    {}
+func (*MsgReleaseFundsResponse) Descriptor() ([]byte, []int) {
+	return fileDescriptor_70947cda59e835fd, []int{9}
+}
+func (m *MsgReleaseFundsResponse) XXX_Unmarshal(b []byte) error {
+	return m.Unmarshal(b)
+}
+func (m *MsgReleaseFundsResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	if deterministic {
+		return xxx_messageInfo_MsgReleaseFundsResponse.Marshal(b, m, deterministic)
+	} else {
+		b = b[:cap(b)]
+		n, err := m.MarshalToSizedBuffer(b)
+		if err != nil {
+			return nil, err
+		}
+		return b[:n], nil
+	}
+}
+func (m *MsgReleaseFundsResponse) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_MsgReleaseFundsResponse.Merge(m, src)
+}
+func (m *MsgReleaseFundsResponse) XXX_Size() int {
+	return m.Size()
+}
+func (m *MsgReleaseFundsResponse) XXX_DiscardUnknown() {
+	xxx_messageInfo_MsgReleaseFundsResponse.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_MsgReleaseFundsResponse proto.InternalMessageInfo
+
 func init() {
 	proto.RegisterType((*MsgCreateAuction)(nil), "cerc.auction.v1.MsgCreateAuction")
 	proto.RegisterType((*MsgCreateAuctionResponse)(nil), "cerc.auction.v1.MsgCreateAuctionResponse")
@@ -393,67 +483,78 @@ func init() {
 	proto.RegisterType((*MsgRevealBidResponse)(nil), "cerc.auction.v1.MsgRevealBidResponse")
 	proto.RegisterType((*MsgUpdateParams)(nil), "cerc.auction.v1.MsgUpdateParams")
 	proto.RegisterType((*MsgUpdateParamsResponse)(nil), "cerc.auction.v1.MsgUpdateParamsResponse")
+	proto.RegisterType((*MsgReleaseFunds)(nil), "cerc.auction.v1.MsgReleaseFunds")
+	proto.RegisterType((*MsgReleaseFundsResponse)(nil), "cerc.auction.v1.MsgReleaseFundsResponse")
 }
 
 func init() { proto.RegisterFile("cerc/auction/v1/tx.proto", fileDescriptor_70947cda59e835fd) }
 
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+	0x6c, 0x30, 0xbf, 0x41, 0xf2, 0x98, 0x20, 0x2f, 0x2d, 0xed, 0xcd, 0x0c, 0xe8, 0x53, 0x05, 0x2d,
-	0xb7, 0x06, 0x7a, 0x73, 0xfe, 0x63, 0xb3, 0xbb, 0xc0, 0x55, 0xbf, 0xf0, 0x9d, 0x5b, 0x17, 0x96,
+	0x1d, 0x31, 0xef, 0x51, 0xdf, 0xc5, 0x31, 0x39, 0xc6, 0x11, 0xf6, 0x99, 0xfa, 0x21, 0xaa, 0xe2,
-	0x68, 0x1e, 0xe7, 0xe6, 0x93, 0x5f, 0xff, 0xfe, 0xfe, 0xca, 0xae, 0x63, 0x7b, 0xf5, 0xef, 0x5e,
+	0x41, 0x7c, 0x1a, 0x46, 0x34, 0x7e, 0x02, 0x94, 0x6a, 0xbf, 0xfe, 0xb2, 0xbb, 0x0c, 0x9b, 0x7c,
-	0x24, 0xeb, 0x7b, 0x90, 0x31, 0xc7, 0xa8, 0x5d, 0xde, 0xed, 0xed, 0xa5, 0x04, 0x1a, 0xee, 0xec,
+	0xe0, 0xba, 0x11, 0x61, 0xec, 0x8b, 0x38, 0xa2, 0x81, 0x67, 0x67, 0xa6, 0xea, 0x07, 0xa8, 0xd2,
-	0xbd, 0x12, 0x9e, 0x71, 0xdf, 0x90, 0xdc, 0xdb, 0xce, 0xf5, 0x45, 0x6e, 0x75, 0x81, 0x43, 0x1a,
+	0x17, 0x11, 0x04, 0x87, 0xb5, 0xd6, 0xca, 0x54, 0x9e, 0x12, 0xa0, 0x5d, 0xe6, 0x9b, 0x6f, 0x83,
-	0x0b, 0xde, 0xf2, 0x0e, 0x2c, 0xe5, 0x9d, 0xc1, 0xcb, 0x79, 0x17, 0xd6, 0xec, 0x15, 0xbc, 0xf0,
+	0xf1, 0xfe, 0x5b, 0x9c, 0x84, 0x2c, 0x8c, 0xb1, 0x8a, 0x56, 0x0a, 0x19, 0x25, 0x54, 0x18, 0x3f,
-	0x25, 0x10, 0xbc, 0x0f, 0xd0, 0xd5, 0xb9, 0x55, 0xd9, 0x59, 0xd6, 0xbb, 0x5a, 0xd1, 0xd9, 0xbf,
+	0xcb, 0x6c, 0x6d, 0xd2, 0x23, 0x98, 0x91, 0xc3, 0x41, 0xe0, 0xb2, 0x9b, 0x9c, 0x00, 0x68, 0xe4,
-	0xa8, 0x42, 0x0b, 0xe8, 0xac, 0x7e, 0xfd, 0xf2, 0xd9, 0x6d, 0xc3, 0xff, 0xe8, 0xf9, 0x59, 0xd7,
+	0xdc, 0x6b, 0x36, 0x72, 0x28, 0x0a, 0xc8, 0x27, 0xf9, 0x46, 0x7a, 0xd9, 0xfa, 0xb7, 0x8c, 0xe6,
-	0x78, 0x71, 0xd6, 0x35, 0xfe, 0x3c, 0xeb, 0x1a, 0x4f, 0xcf, 0xbb, 0x8d, 0x17, 0xe7, 0xdd, 0xc6,
+	0x8f, 0x98, 0xa7, 0x7e, 0xa7, 0xa0, 0x3b, 0x93, 0x6f, 0x88, 0x8d, 0x29, 0x94, 0xe2, 0x75, 0x58,
-	0x6f, 0xe7, 0xdd, 0xc6, 0x83, 0xbd, 0x84, 0x16, 0xee, 0x38, 0x0e, 0x5d, 0xf1, 0xef, 0x84, 0xe4,
+	0xdf, 0xb9, 0xd2, 0x24, 0xed, 0xc2, 0xbd, 0xf3, 0xdf, 0xfe, 0xf9, 0x61, 0x6e, 0xc3, 0xd0, 0xad,
-	0xd1, 0x01, 0x65, 0xde, 0x00, 0x47, 0x2c, 0xa3, 0x51, 0xec, 0x3d, 0xd2, 0x8a, 0xc3, 0x96, 0xfc,
+	0xe2, 0x73, 0xc6, 0x11, 0xf6, 0x1d, 0x90, 0xa8, 0x43, 0x54, 0xcd, 0x6e, 0xbe, 0xf5, 0x99, 0x00,
-	0xa0, 0xbf, 0xf7, 0x6f, 0x00, 0x00, 0x00, 0xff, 0xff, 0xca, 0x2e, 0x75, 0x29, 0x87, 0x09, 0x00,
+	0x89, 0xba, 0xbe, 0xf5, 0x4a, 0x75, 0x8a, 0xbd, 0x29, 0xb0, 0xd7, 0x8d, 0xb5, 0x69, 0x6c, 0x79,
+	0xbd, 0x75, 0xa9, 0xcb, 0x71, 0xb3, 0x1b, 0x62, 0x26, 0x6e, 0xaa, 0x9e, 0x8d, 0x3b, 0xb5, 0x84,
+	0xaf, 0xc0, 0x85, 0xdf, 0x2e, 0xc7, 0x7d, 0x8c, 0x16, 0x27, 0x16, 0xa9, 0x39, 0x2b, 0x76, 0xde,
+	0xa2, 0xbe, 0x7d, 0x95, 0x45, 0x3a, 0x39, 0xe7, 0x0a, 0x5a, 0x9c, 0x98, 0xfb, 0xe6, 0xec, 0xc4,
+	0x33, 0x8b, 0xd9, 0xc1, 0x67, 0x8d, 0xa5, 0xf1, 0xae, 0xa8, 0xae, 0x69, 0x34, 0x66, 0x54, 0x27,
+	0xcc, 0x3b, 0x27, 0x22, 0xe2, 0xc2, 0x37, 0x2f, 0x9f, 0xdd, 0x57, 0xda, 0x1f, 0x3f, 0xbf, 0x68,
+	0x28, 0x2f, 0x2e, 0x1a, 0xca, 0xdf, 0x17, 0x0d, 0xe5, 0xe9, 0x65, 0xa3, 0xf4, 0xe2, 0xb2, 0x51,
+	0xfa, 0xe3, 0xb2, 0x51, 0x7a, 0xbc, 0xe5, 0xd1, 0xd8, 0x1c, 0xba, 0x5d, 0x93, 0xbf, 0x7c, 0x49,
+	0xe4, 0xec, 0xd2, 0xd0, 0xea, 0x61, 0x27, 0x0c, 0xa8, 0xe3, 0x5a, 0x67, 0x49, 0xe0, 0x6e, 0x45,
+	0x3c, 0xe1, 0xde, 0xff, 0x3f, 0x00, 0x00, 0xff, 0xff, 0xcf, 0x56, 0x96, 0xba, 0xe3, 0x0b, 0x00,
 	0x00,
 }
 
@@ -478,6 +579,8 @@ type MsgClient interface {
 	// UpdateParams defines an operation for updating the x/staking module
 	// parameters.
 	UpdateParams(ctx context.Context, in *MsgUpdateParams, opts ...grpc.CallOption) (*MsgUpdateParamsResponse, error)
+	// ReleaseFunds is the command for paying the winners of provider auctions
+	ReleaseFunds(ctx context.Context, in *MsgReleaseFunds, opts ...grpc.CallOption) (*MsgReleaseFundsResponse, error)
 }
 
 type msgClient struct {
@@ -524,6 +627,15 @@ func (c *msgClient) UpdateParams(ctx context.Context, in *MsgUpdateParams, opts
 	return out, nil
 }
 
+func (c *msgClient) ReleaseFunds(ctx context.Context, in *MsgReleaseFunds, opts ...grpc.CallOption) (*MsgReleaseFundsResponse, error) {
+	out := new(MsgReleaseFundsResponse)
+	err := c.cc.Invoke(ctx, "/cerc.auction.v1.Msg/ReleaseFunds", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 // MsgServer is the server API for Msg service.
 type MsgServer interface {
 	// CreateAuction is the command for creating an auction
@@ -535,6 +647,8 @@ type MsgServer interface {
 	// UpdateParams defines an operation for updating the x/staking module
 	// parameters.
 	UpdateParams(context.Context, *MsgUpdateParams) (*MsgUpdateParamsResponse, error)
+	// ReleaseFunds is the command for paying the winners of provider auctions
+	ReleaseFunds(context.Context, *MsgReleaseFunds) (*MsgReleaseFundsResponse, error)
 }
 
 // UnimplementedMsgServer can be embedded to have forward compatible implementations.
@@ -553,6 +667,9 @@ func (*UnimplementedMsgServer) RevealBid(ctx context.Context, req *MsgRevealBid)
 func (*UnimplementedMsgServer) UpdateParams(ctx context.Context, req *MsgUpdateParams) (*MsgUpdateParamsResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method UpdateParams not implemented")
 }
+func (*UnimplementedMsgServer) ReleaseFunds(ctx context.Context, req *MsgReleaseFunds) (*MsgReleaseFundsResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method ReleaseFunds not implemented")
+}
 
 func RegisterMsgServer(s grpc1.Server, srv MsgServer) {
 	s.RegisterService(&_Msg_serviceDesc, srv)
@@ -630,6 +747,24 @@ func _Msg_UpdateParams_Handler(srv interface{}, ctx context.Context, dec func(in
 	return interceptor(ctx, in, info, handler)
 }
 
+func _Msg_ReleaseFunds_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(MsgReleaseFunds)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(MsgServer).ReleaseFunds(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/cerc.auction.v1.Msg/ReleaseFunds",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(MsgServer).ReleaseFunds(ctx, req.(*MsgReleaseFunds))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 var _Msg_serviceDesc = grpc.ServiceDesc{
 	ServiceName: "cerc.auction.v1.Msg",
 	HandlerType: (*MsgServer)(nil),
@@ -650,6 +785,10 @@ var _Msg_serviceDesc = grpc.ServiceDesc{
 			MethodName: "UpdateParams",
 			Handler:    _Msg_UpdateParams_Handler,
 		},
+		{
+			MethodName: "ReleaseFunds",
+			Handler:    _Msg_ReleaseFunds_Handler,
+		},
 	},
 	Streams:  []grpc.StreamDesc{},
 	Metadata: "cerc/auction/v1/tx.proto",
@@ -675,13 +814,21 @@ func (m *MsgCreateAuction) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 	_ = i
 	var l int
 	_ = l
-	if len(m.Signer) > 0 {
+	if m.NumProviders != 0 {
-		i -= len(m.Signer)
+		i = encodeVarintTx(dAtA, i, uint64(m.NumProviders))
-		copy(dAtA[i:], m.Signer)
-		i = encodeVarintTx(dAtA, i, uint64(len(m.Signer)))
 		i--
-		dAtA[i] = 0x32
+		dAtA[i] = 0x48
 	}
+	{
+		size, err := m.MaxPrice.MarshalToSizedBuffer(dAtA[:i])
+		if err != nil {
+			return 0, err
+		}
+		i -= size
+		i = encodeVarintTx(dAtA, i, uint64(size))
+	}
+	i--
+	dAtA[i] = 0x42
 	{
 		size, err := m.MinimumBid.MarshalToSizedBuffer(dAtA[:i])
 		if err != nil {
@@ -691,7 +838,7 @@ func (m *MsgCreateAuction) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 		i = encodeVarintTx(dAtA, i, uint64(size))
 	}
 	i--
-	dAtA[i] = 0x2a
+	dAtA[i] = 0x3a
 	{
 		size, err := m.RevealFee.MarshalToSizedBuffer(dAtA[:i])
 		if err != nil {
@@ -701,7 +848,7 @@ func (m *MsgCreateAuction) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 		i = encodeVarintTx(dAtA, i, uint64(size))
 	}
 	i--
-	dAtA[i] = 0x22
+	dAtA[i] = 0x32
 	{
 		size, err := m.CommitFee.MarshalToSizedBuffer(dAtA[:i])
 		if err != nil {
@@ -711,23 +858,37 @@ func (m *MsgCreateAuction) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 		i = encodeVarintTx(dAtA, i, uint64(size))
 	}
 	i--
-	dAtA[i] = 0x1a
+	dAtA[i] = 0x2a
-	n4, err4 := github_com_cosmos_gogoproto_types.StdDurationMarshalTo(m.RevealsDuration, dAtA[i-github_com_cosmos_gogoproto_types.SizeOfStdDuration(m.RevealsDuration):])
+	n5, err5 := github_com_cosmos_gogoproto_types.StdDurationMarshalTo(m.RevealsDuration, dAtA[i-github_com_cosmos_gogoproto_types.SizeOfStdDuration(m.RevealsDuration):])
-	if err4 != nil {
-		return 0, err4
-	}
-	i -= n4
-	i = encodeVarintTx(dAtA, i, uint64(n4))
-	i--
-	dAtA[i] = 0x12
-	n5, err5 := github_com_cosmos_gogoproto_types.StdDurationMarshalTo(m.CommitsDuration, dAtA[i-github_com_cosmos_gogoproto_types.SizeOfStdDuration(m.CommitsDuration):])
 	if err5 != nil {
 		return 0, err5
 	}
 	i -= n5
 	i = encodeVarintTx(dAtA, i, uint64(n5))
 	i--
+	dAtA[i] = 0x22
+	n6, err6 := github_com_cosmos_gogoproto_types.StdDurationMarshalTo(m.CommitsDuration, dAtA[i-github_com_cosmos_gogoproto_types.SizeOfStdDuration(m.CommitsDuration):])
+	if err6 != nil {
+		return 0, err6
+	}
+	i -= n6
+	i = encodeVarintTx(dAtA, i, uint64(n6))
+	i--
+	dAtA[i] = 0x1a
+	if len(m.Kind) > 0 {
+		i -= len(m.Kind)
+		copy(dAtA[i:], m.Kind)
+		i = encodeVarintTx(dAtA, i, uint64(len(m.Kind)))
+		i--
+		dAtA[i] = 0x12
+	}
+	if len(m.Signer) > 0 {
+		i -= len(m.Signer)
+		copy(dAtA[i:], m.Signer)
+		i = encodeVarintTx(dAtA, i, uint64(len(m.Signer)))
+		i--
 		dAtA[i] = 0xa
+	}
 	return len(dAtA) - i, nil
 }
 
@@ -987,6 +1148,78 @@ func (m *MsgUpdateParamsResponse) MarshalToSizedBuffer(dAtA []byte) (int, error)
 	return len(dAtA) - i, nil
 }
 
+func (m *MsgReleaseFunds) Marshal() (dAtA []byte, err error) {
+	size := m.Size()
+	dAtA = make([]byte, size)
+	n, err := m.MarshalToSizedBuffer(dAtA[:size])
+	if err != nil {
+		return nil, err
+	}
+	return dAtA[:n], nil
+}
+
+func (m *MsgReleaseFunds) MarshalTo(dAtA []byte) (int, error) {
+	size := m.Size()
+	return m.MarshalToSizedBuffer(dAtA[:size])
+}
+
+func (m *MsgReleaseFunds) MarshalToSizedBuffer(dAtA []byte) (int, error) {
+	i := len(dAtA)
+	_ = i
+	var l int
+	_ = l
+	if len(m.Signer) > 0 {
+		i -= len(m.Signer)
+		copy(dAtA[i:], m.Signer)
+		i = encodeVarintTx(dAtA, i, uint64(len(m.Signer)))
+		i--
+		dAtA[i] = 0x12
+	}
+	if len(m.AuctionId) > 0 {
+		i -= len(m.AuctionId)
+		copy(dAtA[i:], m.AuctionId)
+		i = encodeVarintTx(dAtA, i, uint64(len(m.AuctionId)))
+		i--
+		dAtA[i] = 0xa
+	}
+	return len(dAtA) - i, nil
+}
+
+func (m *MsgReleaseFundsResponse) Marshal() (dAtA []byte, err error) {
+	size := m.Size()
+	dAtA = make([]byte, size)
+	n, err := m.MarshalToSizedBuffer(dAtA[:size])
+	if err != nil {
+		return nil, err
+	}
+	return dAtA[:n], nil
+}
+
+func (m *MsgReleaseFundsResponse) MarshalTo(dAtA []byte) (int, error) {
+	size := m.Size()
+	return m.MarshalToSizedBuffer(dAtA[:size])
+}
+
+func (m *MsgReleaseFundsResponse) MarshalToSizedBuffer(dAtA []byte) (int, error) {
+	i := len(dAtA)
+	_ = i
+	var l int
+	_ = l
+	if m.Auction != nil {
+		{
+			size, err := m.Auction.MarshalToSizedBuffer(dAtA[:i])
+			if err != nil {
+				return 0, err
+			}
+			i -= size
+			i = encodeVarintTx(dAtA, i, uint64(size))
+		}
+		i--
+		dAtA[i] = 0xa
+	}
+	return len(dAtA) - i, nil
+}
+
 func encodeVarintTx(dAtA []byte, offset int, v uint64) int {
 	offset -= sovTx(v)
 	base := offset
@@ -1004,6 +1237,14 @@ func (m *MsgCreateAuction) Size() (n int) {
 	}
 	var l int
 	_ = l
+	l = len(m.Signer)
+	if l > 0 {
+		n += 1 + l + sovTx(uint64(l))
+	}
+	l = len(m.Kind)
+	if l > 0 {
+		n += 1 + l + sovTx(uint64(l))
+	}
 	l = github_com_cosmos_gogoproto_types.SizeOfStdDuration(m.CommitsDuration)
 	n += 1 + l + sovTx(uint64(l))
 	l = github_com_cosmos_gogoproto_types.SizeOfStdDuration(m.RevealsDuration)
@@ -1014,9 +1255,10 @@ func (m *MsgCreateAuction) Size() (n int) {
 	n += 1 + l + sovTx(uint64(l))
 	l = m.MinimumBid.Size()
 	n += 1 + l + sovTx(uint64(l))
-	l = len(m.Signer)
+	l = m.MaxPrice.Size()
-	if l > 0 {
 	n += 1 + l + sovTx(uint64(l))
+	if m.NumProviders != 0 {
+		n += 1 + sovTx(uint64(m.NumProviders))
 	}
 	return n
 }
@@ -1126,6 +1368,36 @@ func (m *MsgUpdateParamsResponse) Size() (n int) {
 	return n
 }
 
+func (m *MsgReleaseFunds) Size() (n int) {
+	if m == nil {
+		return 0
+	}
+	var l int
+	_ = l
+	l = len(m.AuctionId)
+	if l > 0 {
+		n += 1 + l + sovTx(uint64(l))
+	}
+	l = len(m.Signer)
+	if l > 0 {
+		n += 1 + l + sovTx(uint64(l))
+	}
+	return n
+}
+
+func (m *MsgReleaseFundsResponse) Size() (n int) {
+	if m == nil {
+		return 0
+	}
+	var l int
+	_ = l
+	if m.Auction != nil {
+		l = m.Auction.Size()
+		n += 1 + l + sovTx(uint64(l))
+	}
+	return n
+}
+
 func sovTx(x uint64) (n int) {
 	return (math_bits.Len64(x|1) + 6) / 7
 }
@@ -1162,6 +1434,70 @@ func (m *MsgCreateAuction) Unmarshal(dAtA []byte) error {
 		}
 		switch fieldNum {
 		case 1:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Signer", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowTx
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				stringLen |= uint64(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			intStringLen := int(stringLen)
+			if intStringLen < 0 {
+				return ErrInvalidLengthTx
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex < 0 {
+				return ErrInvalidLengthTx
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.Signer = string(dAtA[iNdEx:postIndex])
+			iNdEx = postIndex
+		case 2:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Kind", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowTx
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				stringLen |= uint64(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			intStringLen := int(stringLen)
+			if intStringLen < 0 {
+				return ErrInvalidLengthTx
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex < 0 {
+				return ErrInvalidLengthTx
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.Kind = string(dAtA[iNdEx:postIndex])
+			iNdEx = postIndex
+		case 3:
 			if wireType != 2 {
 				return fmt.Errorf("proto: wrong wireType = %d for field CommitsDuration", wireType)
 			}
@@ -1194,7 +1530,7 @@ func (m *MsgCreateAuction) Unmarshal(dAtA []byte) error {
 				return err
 			}
 			iNdEx = postIndex
-		case 2:
+		case 4:
 			if wireType != 2 {
 				return fmt.Errorf("proto: wrong wireType = %d for field RevealsDuration", wireType)
 			}
@@ -1227,7 +1563,7 @@ func (m *MsgCreateAuction) Unmarshal(dAtA []byte) error {
 				return err
 			}
 			iNdEx = postIndex
-		case 3:
+		case 5:
 			if wireType != 2 {
 				return fmt.Errorf("proto: wrong wireType = %d for field CommitFee", wireType)
 			}
@@ -1260,7 +1596,7 @@ func (m *MsgCreateAuction) Unmarshal(dAtA []byte) error {
 				return err
 			}
 			iNdEx = postIndex
-		case 4:
+		case 6:
 			if wireType != 2 {
 				return fmt.Errorf("proto: wrong wireType = %d for field RevealFee", wireType)
 			}
@@ -1293,7 +1629,7 @@ func (m *MsgCreateAuction) Unmarshal(dAtA []byte) error {
 				return err
 			}
 			iNdEx = postIndex
-		case 5:
+		case 7:
 			if wireType != 2 {
 				return fmt.Errorf("proto: wrong wireType = %d for field MinimumBid", wireType)
 			}
@@ -1326,11 +1662,11 @@ func (m *MsgCreateAuction) Unmarshal(dAtA []byte) error {
 				return err
 			}
 			iNdEx = postIndex
-		case 6:
+		case 8:
 			if wireType != 2 {
-				return fmt.Errorf("proto: wrong wireType = %d for field Signer", wireType)
+				return fmt.Errorf("proto: wrong wireType = %d for field MaxPrice", wireType)
 			}
-			var stringLen uint64
+			var msglen int
 			for shift := uint(0); ; shift += 7 {
 				if shift >= 64 {
 					return ErrIntOverflowTx
@@ -1340,24 +1676,44 @@ func (m *MsgCreateAuction) Unmarshal(dAtA []byte) error {
 				}
 				b := dAtA[iNdEx]
 				iNdEx++
-				stringLen |= uint64(b&0x7F) << shift
+				msglen |= int(b&0x7F) << shift
 				if b < 0x80 {
 					break
 				}
 			}
-			intStringLen := int(stringLen)
+			if msglen < 0 {
-			if intStringLen < 0 {
 				return ErrInvalidLengthTx
 			}
-			postIndex := iNdEx + intStringLen
+			postIndex := iNdEx + msglen
 			if postIndex < 0 {
 				return ErrInvalidLengthTx
 			}
 			if postIndex > l {
 				return io.ErrUnexpectedEOF
 			}
-			m.Signer = string(dAtA[iNdEx:postIndex])
+			if err := m.MaxPrice.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
+				return err
+			}
 			iNdEx = postIndex
+		case 9:
+			if wireType != 0 {
+				return fmt.Errorf("proto: wrong wireType = %d for field NumProviders", wireType)
+			}
+			m.NumProviders = 0
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowTx
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				m.NumProviders |= int32(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
 		default:
 			iNdEx = preIndex
 			skippy, err := skipTx(dAtA[iNdEx:])
@@ -2094,6 +2450,206 @@ func (m *MsgUpdateParamsResponse) Unmarshal(dAtA []byte) error {
 	}
 	return nil
 }
+func (m *MsgReleaseFunds) Unmarshal(dAtA []byte) error {
+	l := len(dAtA)
+	iNdEx := 0
+	for iNdEx < l {
+		preIndex := iNdEx
+		var wire uint64
+		for shift := uint(0); ; shift += 7 {
+			if shift >= 64 {
+				return ErrIntOverflowTx
+			}
+			if iNdEx >= l {
+				return io.ErrUnexpectedEOF
+			}
+			b := dAtA[iNdEx]
+			iNdEx++
+			wire |= uint64(b&0x7F) << shift
+			if b < 0x80 {
+				break
+			}
+		}
+		fieldNum := int32(wire >> 3)
+		wireType := int(wire & 0x7)
+		if wireType == 4 {
+			return fmt.Errorf("proto: MsgReleaseFunds: wiretype end group for non-group")
+		}
+		if fieldNum <= 0 {
+			return fmt.Errorf("proto: MsgReleaseFunds: illegal tag %d (wire type %d)", fieldNum, wire)
+		}
+		switch fieldNum {
+		case 1:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field AuctionId", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowTx
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				stringLen |= uint64(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			intStringLen := int(stringLen)
+			if intStringLen < 0 {
+				return ErrInvalidLengthTx
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex < 0 {
+				return ErrInvalidLengthTx
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.AuctionId = string(dAtA[iNdEx:postIndex])
+			iNdEx = postIndex
+		case 2:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Signer", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowTx
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				stringLen |= uint64(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			intStringLen := int(stringLen)
+			if intStringLen < 0 {
+				return ErrInvalidLengthTx
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex < 0 {
+				return ErrInvalidLengthTx
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.Signer = string(dAtA[iNdEx:postIndex])
+			iNdEx = postIndex
+		default:
+			iNdEx = preIndex
+			skippy, err := skipTx(dAtA[iNdEx:])
+			if err != nil {
+				return err
+			}
+			if (skippy < 0) || (iNdEx+skippy) < 0 {
+				return ErrInvalidLengthTx
+			}
+			if (iNdEx + skippy) > l {
+				return io.ErrUnexpectedEOF
+			}
+			iNdEx += skippy
+		}
+	}
+
+	if iNdEx > l {
+		return io.ErrUnexpectedEOF
+	}
+	return nil
+}
+func (m *MsgReleaseFundsResponse) Unmarshal(dAtA []byte) error {
+	l := len(dAtA)
+	iNdEx := 0
+	for iNdEx < l {
+		preIndex := iNdEx
+		var wire uint64
+		for shift := uint(0); ; shift += 7 {
+			if shift >= 64 {
+				return ErrIntOverflowTx
+			}
+			if iNdEx >= l {
+				return io.ErrUnexpectedEOF
+			}
+			b := dAtA[iNdEx]
+			iNdEx++
+			wire |= uint64(b&0x7F) << shift
+			if b < 0x80 {
+				break
+			}
+		}
+		fieldNum := int32(wire >> 3)
+		wireType := int(wire & 0x7)
+		if wireType == 4 {
+			return fmt.Errorf("proto: MsgReleaseFundsResponse: wiretype end group for non-group")
+		}
+		if fieldNum <= 0 {
+			return fmt.Errorf("proto: MsgReleaseFundsResponse: illegal tag %d (wire type %d)", fieldNum, wire)
+		}
+		switch fieldNum {
+		case 1:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Auction", wireType)
+			}
+			var msglen int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowTx
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				msglen |= int(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			if msglen < 0 {
+				return ErrInvalidLengthTx
+			}
+			postIndex := iNdEx + msglen
+			if postIndex < 0 {
+				return ErrInvalidLengthTx
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			if m.Auction == nil {
+				m.Auction = &Auction{}
+			}
+			if err := m.Auction.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
+				return err
+			}
+			iNdEx = postIndex
+		default:
+			iNdEx = preIndex
+			skippy, err := skipTx(dAtA[iNdEx:])
+			if err != nil {
+				return err
+			}
+			if (skippy < 0) || (iNdEx+skippy) < 0 {
+				return ErrInvalidLengthTx
+			}
+			if (iNdEx + skippy) > l {
+				return io.ErrUnexpectedEOF
+			}
+			iNdEx += skippy
+		}
+	}
+
+	if iNdEx > l {
+		return io.ErrUnexpectedEOF
+	}
+	return nil
+}
 func skipTx(dAtA []byte) (n int, err error) {
 	l := len(dAtA)
 	iNdEx := 0

x/auction/tx.pb.gw.go

@@ -141,6 +141,42 @@ func local_request_Msg_RevealBid_0(ctx context.Context, marshaler runtime.Marsha
 
 }
 
+var (
+	filter_Msg_ReleaseFunds_0 = &utilities.DoubleArray{Encoding: map[string]int{}, Base: []int(nil), Check: []int(nil)}
+)
+
+func request_Msg_ReleaseFunds_0(ctx context.Context, marshaler runtime.Marshaler, client MsgClient, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
+	var protoReq MsgReleaseFunds
+	var metadata runtime.ServerMetadata
+
+	if err := req.ParseForm(); err != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
+	}
+	if err := runtime.PopulateQueryParameters(&protoReq, req.Form, filter_Msg_ReleaseFunds_0); err != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
+	}
+
+	msg, err := client.ReleaseFunds(ctx, &protoReq, grpc.Header(&metadata.HeaderMD), grpc.Trailer(&metadata.TrailerMD))
+	return msg, metadata, err
+
+}
+
+func local_request_Msg_ReleaseFunds_0(ctx context.Context, marshaler runtime.Marshaler, server MsgServer, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
+	var protoReq MsgReleaseFunds
+	var metadata runtime.ServerMetadata
+
+	if err := req.ParseForm(); err != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
+	}
+	if err := runtime.PopulateQueryParameters(&protoReq, req.Form, filter_Msg_ReleaseFunds_0); err != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
+	}
+
+	msg, err := server.ReleaseFunds(ctx, &protoReq)
+	return msg, metadata, err
+
+}
+
 // RegisterMsgHandlerServer registers the http handlers for service Msg to "mux".
 // UnaryRPC     :call MsgServer directly.
 // StreamingRPC :currently unsupported pending https://github.com/grpc/grpc-go/issues/906.
@@ -216,6 +252,29 @@ func RegisterMsgHandlerServer(ctx context.Context, mux *runtime.ServeMux, server
 
 	})
 
+	mux.Handle("POST", pattern_Msg_ReleaseFunds_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
+		ctx, cancel := context.WithCancel(req.Context())
+		defer cancel()
+		var stream runtime.ServerTransportStream
+		ctx = grpc.NewContextWithServerTransportStream(ctx, &stream)
+		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
+		rctx, err := runtime.AnnotateIncomingContext(ctx, mux, req)
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+		resp, md, err := local_request_Msg_ReleaseFunds_0(rctx, inboundMarshaler, server, req, pathParams)
+		md.HeaderMD, md.TrailerMD = metadata.Join(md.HeaderMD, stream.Header()), metadata.Join(md.TrailerMD, stream.Trailer())
+		ctx = runtime.NewServerMetadataContext(ctx, md)
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+
+		forward_Msg_ReleaseFunds_0(ctx, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
+
+	})
+
 	return nil
 }
 
@@ -317,6 +376,26 @@ func RegisterMsgHandlerClient(ctx context.Context, mux *runtime.ServeMux, client
 
 	})
 
+	mux.Handle("POST", pattern_Msg_ReleaseFunds_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
+		ctx, cancel := context.WithCancel(req.Context())
+		defer cancel()
+		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
+		rctx, err := runtime.AnnotateContext(ctx, mux, req)
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+		resp, md, err := request_Msg_ReleaseFunds_0(rctx, inboundMarshaler, client, req, pathParams)
+		ctx = runtime.NewServerMetadataContext(ctx, md)
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+
+		forward_Msg_ReleaseFunds_0(ctx, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
+
+	})
+
 	return nil
 }
 
@@ -326,6 +405,8 @@ var (
 	pattern_Msg_CommitBid_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2, 2, 3}, []string{"cerc", "auction", "v1", "commit_bid"}, "", runtime.AssumeColonVerbOpt(false)))
 
 	pattern_Msg_RevealBid_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2, 2, 3}, []string{"cerc", "auction", "v1", "reveal_bid"}, "", runtime.AssumeColonVerbOpt(false)))
+
+	pattern_Msg_ReleaseFunds_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2, 2, 3}, []string{"cerc", "auction", "v1", "release_funds"}, "", runtime.AssumeColonVerbOpt(false)))
 )
 
 var (
@@ -334,4 +415,6 @@ var (
 	forward_Msg_CommitBid_0 = runtime.ForwardResponseMessage
 
 	forward_Msg_RevealBid_0 = runtime.ForwardResponseMessage
+
+	forward_Msg_ReleaseFunds_0 = runtime.ForwardResponseMessage
 )

x/auction/types.go

@@ -29,6 +29,12 @@ const (
 	BidStatusRevealed  = "reveal"
 )
 
+// Auction kinds
+const (
+	AuctionKindVickrey  = "vickrey"
+	AuctionKindProvider = "provider"
+)
+
 // AuctionId simplifies generation of auction ids.
 type AuctionId struct {
 	Address  sdk.Address

x/registry/keeper/keeper.go

@@ -224,7 +224,11 @@ func (k Keeper) PaginatedListRecords(ctx sdk.Context, pagination *query.PageRequ
 		}
 	} else {
 		var err error
-		records, pageResp, err = query.CollectionPaginate(ctx, k.Records, pagination, func(key string, value registrytypes.Record) (registrytypes.Record, error) {
+		records, pageResp, err = query.CollectionPaginate(
+			ctx,
+			k.Records,
+			pagination,
+			func(key string, value registrytypes.Record) (registrytypes.Record, error) {
 				if err := k.populateRecordNames(ctx, &value); err != nil {
 					return registrytypes.Record{}, err
 				}

x/registry/keeper/naming_keeper.go

@@ -7,6 +7,8 @@ import (
 	"strings"
 	"time"
 
+	"cosmossdk.io/math"
+
 	"cosmossdk.io/collections"
 	errorsmod "cosmossdk.io/errors"
 	cryptotypes "github.com/cosmos/cosmos-sdk/crypto/types"
@@ -285,16 +287,18 @@ func (k Keeper) createAuthority(ctx sdk.Context, name string, owner string, isRo
 		// Reset bond ID if required.
 		authority.BondId = ""
 
-		params := auctiontypes.Params{
-			CommitsDuration: moduleParams.AuthorityAuctionCommitsDuration,
-			RevealsDuration: moduleParams.AuthorityAuctionRevealsDuration,
-			CommitFee:       moduleParams.AuthorityAuctionCommitFee,
-			RevealFee:       moduleParams.AuthorityAuctionRevealFee,
-			MinimumBid:      moduleParams.AuthorityAuctionMinimumBid,
-		}
-
 		// Create an auction.
-		msg := auctiontypes.NewMsgCreateAuction(params, ownerAddress)
+		msg := auctiontypes.NewMsgCreateAuction(
+			auctiontypes.AuctionKindVickrey,
+			moduleParams.AuthorityAuctionCommitsDuration,
+			moduleParams.AuthorityAuctionRevealsDuration,
+			moduleParams.AuthorityAuctionCommitFee,
+			moduleParams.AuthorityAuctionRevealFee,
+			moduleParams.AuthorityAuctionMinimumBid,
+			sdk.NewCoin(sdk.DefaultBondDenom, math.NewInt(0)),
+			0,
+			ownerAddress,
+		)
 
 		auction, sdkErr := k.auctionKeeper.CreateAuction(ctx, msg)
 		if sdkErr != nil {

x/registry/keeper/record_keeper.go

@@ -94,9 +94,9 @@ func (rk RecordKeeper) OnAuctionWinnerSelected(ctx sdk.Context, auctionId string
 	}
 
 	if auctionObj.Status == auctiontypes.AuctionStatusCompleted {
-		if auctionObj.WinnerAddress != "" {
+		if len(auctionObj.WinnerAddresses) != 0 {
 			// Mark authority owner and change status to active.
-			authority.OwnerAddress = auctionObj.WinnerAddress
+			authority.OwnerAddress = auctionObj.WinnerAddresses[0]
 			authority.Status = registrytypes.AuthorityActive
 
 			// Reset bond id if required, as owner has changed.