Add queries to get participant by laconic or nitro address (#44)

Part of [laconicd testnet validator enrollment](https://www.notion.so/laconicd-testnet-validator-enrollment-6fc1d3cafcc64fef8c5ed3affa27c675)

Co-authored-by: IshaVenikar <ishavenikar7@gmail.com>
Reviewed-on: #44
Co-authored-by: Prathamesh Musale <prathamesh.musale0@gmail.com>
Co-committed-by: Prathamesh Musale <prathamesh.musale0@gmail.com>

api/cerc/onboarding/v1/query_grpc.pb.go

@@ -19,7 +19,9 @@ import (
 const _ = grpc.SupportPackageIsVersion7
 
 const (
-	Query_Participants_FullMethodName = "/cerc.onboarding.v1.Query/Participants"
+	Query_Participants_FullMethodName                 = "/cerc.onboarding.v1.Query/Participants"
+	Query_GetParticipantByAddress_FullMethodName      = "/cerc.onboarding.v1.Query/GetParticipantByAddress"
+	Query_GetParticipantByNitroAddress_FullMethodName = "/cerc.onboarding.v1.Query/GetParticipantByNitroAddress"
 )
 
 // QueryClient is the client API for Query service.
@@ -28,6 +30,10 @@ const (
 type QueryClient interface {
 	// Participants queries Participants list
 	Participants(ctx context.Context, in *QueryParticipantsRequest, opts ...grpc.CallOption) (*QueryParticipantsResponse, error)
+	// GetParticipantByAddress queries a participant by cosmos (laconic) address
+	GetParticipantByAddress(ctx context.Context, in *QueryGetParticipantByAddressRequest, opts ...grpc.CallOption) (*QueryGetParticipantByAddressResponse, error)
+	// GetParticipantByNitroAddress queries a participant by nitro address
+	GetParticipantByNitroAddress(ctx context.Context, in *QueryGetParticipantByNitroAddressRequest, opts ...grpc.CallOption) (*QueryGetParticipantByNitroAddressResponse, error)
 }
 
 type queryClient struct {
@@ -47,12 +53,34 @@ func (c *queryClient) Participants(ctx context.Context, in *QueryParticipantsReq
 	return out, nil
 }
 
+func (c *queryClient) GetParticipantByAddress(ctx context.Context, in *QueryGetParticipantByAddressRequest, opts ...grpc.CallOption) (*QueryGetParticipantByAddressResponse, error) {
+	out := new(QueryGetParticipantByAddressResponse)
+	err := c.cc.Invoke(ctx, Query_GetParticipantByAddress_FullMethodName, in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *queryClient) GetParticipantByNitroAddress(ctx context.Context, in *QueryGetParticipantByNitroAddressRequest, opts ...grpc.CallOption) (*QueryGetParticipantByNitroAddressResponse, error) {
+	out := new(QueryGetParticipantByNitroAddressResponse)
+	err := c.cc.Invoke(ctx, Query_GetParticipantByNitroAddress_FullMethodName, in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 // QueryServer is the server API for Query service.
 // All implementations must embed UnimplementedQueryServer
 // for forward compatibility
 type QueryServer interface {
 	// Participants queries Participants list
 	Participants(context.Context, *QueryParticipantsRequest) (*QueryParticipantsResponse, error)
+	// GetParticipantByAddress queries a participant by cosmos (laconic) address
+	GetParticipantByAddress(context.Context, *QueryGetParticipantByAddressRequest) (*QueryGetParticipantByAddressResponse, error)
+	// GetParticipantByNitroAddress queries a participant by nitro address
+	GetParticipantByNitroAddress(context.Context, *QueryGetParticipantByNitroAddressRequest) (*QueryGetParticipantByNitroAddressResponse, error)
 	mustEmbedUnimplementedQueryServer()
 }
 
@@ -63,6 +91,12 @@ type UnimplementedQueryServer struct {
 func (UnimplementedQueryServer) Participants(context.Context, *QueryParticipantsRequest) (*QueryParticipantsResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method Participants not implemented")
 }
+func (UnimplementedQueryServer) GetParticipantByAddress(context.Context, *QueryGetParticipantByAddressRequest) (*QueryGetParticipantByAddressResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method GetParticipantByAddress not implemented")
+}
+func (UnimplementedQueryServer) GetParticipantByNitroAddress(context.Context, *QueryGetParticipantByNitroAddressRequest) (*QueryGetParticipantByNitroAddressResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method GetParticipantByNitroAddress not implemented")
+}
 func (UnimplementedQueryServer) mustEmbedUnimplementedQueryServer() {}
 
 // UnsafeQueryServer may be embedded to opt out of forward compatibility for this service.
@@ -94,6 +128,42 @@ func _Query_Participants_Handler(srv interface{}, ctx context.Context, dec func(
 	return interceptor(ctx, in, info, handler)
 }
 
+func _Query_GetParticipantByAddress_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(QueryGetParticipantByAddressRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(QueryServer).GetParticipantByAddress(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: Query_GetParticipantByAddress_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(QueryServer).GetParticipantByAddress(ctx, req.(*QueryGetParticipantByAddressRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _Query_GetParticipantByNitroAddress_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(QueryGetParticipantByNitroAddressRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(QueryServer).GetParticipantByNitroAddress(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: Query_GetParticipantByNitroAddress_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(QueryServer).GetParticipantByNitroAddress(ctx, req.(*QueryGetParticipantByNitroAddressRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 // Query_ServiceDesc is the grpc.ServiceDesc for Query service.
 // It's only intended for direct use with grpc.RegisterService,
 // and not to be introspected or modified (even as a copy)
@@ -105,6 +175,14 @@ var Query_ServiceDesc = grpc.ServiceDesc{
 			MethodName: "Participants",
 			Handler:    _Query_Participants_Handler,
 		},
+		{
+			MethodName: "GetParticipantByAddress",
+			Handler:    _Query_GetParticipantByAddress_Handler,
+		},
+		{
+			MethodName: "GetParticipantByNitroAddress",
+			Handler:    _Query_GetParticipantByNitroAddress_Handler,
+		},
 	},
 	Streams:  []grpc.StreamDesc{},
 	Metadata: "cerc/onboarding/v1/query.proto",

gql/cerc-io/laconicd/schema.graphql

@@ -265,4 +265,6 @@ type Query {
 
   # Query participants.
   getParticipants: [Participant]!
+  getParticipantByAddress(address: String!): Participant!
+  getParticipantByNitroAddress(nitroAddress: String!): Participant!
 }

gql/generated.go

@@ -167,18 +167,20 @@ type ComplexityRoot struct {
 	}
 
 	Query struct {
-		GetAccounts       func(childComplexity int, addresses []string) int
+		GetAccounts                  func(childComplexity int, addresses []string) int
-		GetAuctionsByIds  func(childComplexity int, ids []string) int
+		GetAuctionsByIds             func(childComplexity int, ids []string) int
-		GetBondsByIds     func(childComplexity int, ids []string) int
+		GetBondsByIds                func(childComplexity int, ids []string) int
-		GetParticipants   func(childComplexity int) int
+		GetParticipantByAddress      func(childComplexity int, address string) int
-		GetRecordsByIds   func(childComplexity int, ids []string) int
+		GetParticipantByNitroAddress func(childComplexity int, nitroAddress string) int
-		GetStatus         func(childComplexity int) int
+		GetParticipants              func(childComplexity int) int
-		LookupAuthorities func(childComplexity int, names []string) int
+		GetRecordsByIds              func(childComplexity int, ids []string) int
-		LookupNames       func(childComplexity int, names []string) int
+		GetStatus                    func(childComplexity int) int
-		QueryBonds        func(childComplexity int, attributes []*KeyValueInput) int
+		LookupAuthorities            func(childComplexity int, names []string) int
-		QueryBondsByOwner func(childComplexity int, ownerAddresses []string) int
+		LookupNames                  func(childComplexity int, names []string) int
-		QueryRecords      func(childComplexity int, attributes []*KeyValueInput, all *bool) int
+		QueryBonds                   func(childComplexity int, attributes []*KeyValueInput) int
-		ResolveNames      func(childComplexity int, names []string) int
+		QueryBondsByOwner            func(childComplexity int, ownerAddresses []string) int
+		QueryRecords                 func(childComplexity int, attributes []*KeyValueInput, all *bool) int
+		ResolveNames                 func(childComplexity int, names []string) int
 	}
 
 	Record struct {
@@ -234,6 +236,8 @@ type QueryResolver interface {
 	ResolveNames(ctx context.Context, names []string) ([]*Record, error)
 	GetAuctionsByIds(ctx context.Context, ids []string) ([]*Auction, error)
 	GetParticipants(ctx context.Context) ([]*Participant, error)
+	GetParticipantByAddress(ctx context.Context, address string) (*Participant, error)
+	GetParticipantByNitroAddress(ctx context.Context, nitroAddress string) (*Participant, error)
 }
 
 type executableSchema struct {
@@ -728,6 +732,30 @@ func (e *executableSchema) Complexity(typeName, field string, childComplexity in
 
 		return e.complexity.Query.GetBondsByIds(childComplexity, args["ids"].([]string)), true
 
+	case "Query.getParticipantByAddress":
+		if e.complexity.Query.GetParticipantByAddress == nil {
+			break
+		}
+
+		args, err := ec.field_Query_getParticipantByAddress_args(context.TODO(), rawArgs)
+		if err != nil {
+			return 0, false
+		}
+
+		return e.complexity.Query.GetParticipantByAddress(childComplexity, args["address"].(string)), true
+
+	case "Query.getParticipantByNitroAddress":
+		if e.complexity.Query.GetParticipantByNitroAddress == nil {
+			break
+		}
+
+		args, err := ec.field_Query_getParticipantByNitroAddress_args(context.TODO(), rawArgs)
+		if err != nil {
+			return 0, false
+		}
+
+		return e.complexity.Query.GetParticipantByNitroAddress(childComplexity, args["nitroAddress"].(string)), true
+
 	case "Query.getParticipants":
 		if e.complexity.Query.GetParticipants == nil {
 			break
@@ -1128,6 +1156,36 @@ func (ec *executionContext) field_Query_getBondsByIds_args(ctx context.Context,
 	return args, nil
 }
 
+func (ec *executionContext) field_Query_getParticipantByAddress_args(ctx context.Context, rawArgs map[string]interface{}) (map[string]interface{}, error) {
+	var err error
+	args := map[string]interface{}{}
+	var arg0 string
+	if tmp, ok := rawArgs["address"]; ok {
+		ctx := graphql.WithPathContext(ctx, graphql.NewPathWithField("address"))
+		arg0, err = ec.unmarshalNString2string(ctx, tmp)
+		if err != nil {
+			return nil, err
+		}
+	}
+	args["address"] = arg0
+	return args, nil
+}
+
+func (ec *executionContext) field_Query_getParticipantByNitroAddress_args(ctx context.Context, rawArgs map[string]interface{}) (map[string]interface{}, error) {
+	var err error
+	args := map[string]interface{}{}
+	var arg0 string
+	if tmp, ok := rawArgs["nitroAddress"]; ok {
+		ctx := graphql.WithPathContext(ctx, graphql.NewPathWithField("nitroAddress"))
+		arg0, err = ec.unmarshalNString2string(ctx, tmp)
+		if err != nil {
+			return nil, err
+		}
+	}
+	args["nitroAddress"] = arg0
+	return args, nil
+}
+
 func (ec *executionContext) field_Query_getRecordsByIds_args(ctx context.Context, rawArgs map[string]interface{}) (map[string]interface{}, error) {
 	var err error
 	args := map[string]interface{}{}
@@ -4951,6 +5009,136 @@ func (ec *executionContext) fieldContext_Query_getParticipants(ctx context.Conte
 	return fc, nil
 }
 
+func (ec *executionContext) _Query_getParticipantByAddress(ctx context.Context, field graphql.CollectedField) (ret graphql.Marshaler) {
+	fc, err := ec.fieldContext_Query_getParticipantByAddress(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 ec.resolvers.Query().GetParticipantByAddress(rctx, fc.Args["address"].(string))
+	})
+	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.(*Participant)
+	fc.Result = res
+	return ec.marshalNParticipant2ᚖgitᚗvdbᚗtoᚋcercᚑioᚋlaconicdᚋgqlᚐParticipant(ctx, field.Selections, res)
+}
+
+func (ec *executionContext) fieldContext_Query_getParticipantByAddress(ctx context.Context, field graphql.CollectedField) (fc *graphql.FieldContext, err error) {
+	fc = &graphql.FieldContext{
+		Object:     "Query",
+		Field:      field,
+		IsMethod:   true,
+		IsResolver: true,
+		Child: func(ctx context.Context, field graphql.CollectedField) (*graphql.FieldContext, error) {
+			switch field.Name {
+			case "cosmosAddress":
+				return ec.fieldContext_Participant_cosmosAddress(ctx, field)
+			case "nitroAddress":
+				return ec.fieldContext_Participant_nitroAddress(ctx, field)
+			case "role":
+				return ec.fieldContext_Participant_role(ctx, field)
+			case "kycId":
+				return ec.fieldContext_Participant_kycId(ctx, field)
+			}
+			return nil, fmt.Errorf("no field named %q was found under type Participant", field.Name)
+		},
+	}
+	defer func() {
+		if r := recover(); r != nil {
+			err = ec.Recover(ctx, r)
+			ec.Error(ctx, err)
+		}
+	}()
+	ctx = graphql.WithFieldContext(ctx, fc)
+	if fc.Args, err = ec.field_Query_getParticipantByAddress_args(ctx, field.ArgumentMap(ec.Variables)); err != nil {
+		ec.Error(ctx, err)
+		return
+	}
+	return fc, nil
+}
+
+func (ec *executionContext) _Query_getParticipantByNitroAddress(ctx context.Context, field graphql.CollectedField) (ret graphql.Marshaler) {
+	fc, err := ec.fieldContext_Query_getParticipantByNitroAddress(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 ec.resolvers.Query().GetParticipantByNitroAddress(rctx, fc.Args["nitroAddress"].(string))
+	})
+	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.(*Participant)
+	fc.Result = res
+	return ec.marshalNParticipant2ᚖgitᚗvdbᚗtoᚋcercᚑioᚋlaconicdᚋgqlᚐParticipant(ctx, field.Selections, res)
+}
+
+func (ec *executionContext) fieldContext_Query_getParticipantByNitroAddress(ctx context.Context, field graphql.CollectedField) (fc *graphql.FieldContext, err error) {
+	fc = &graphql.FieldContext{
+		Object:     "Query",
+		Field:      field,
+		IsMethod:   true,
+		IsResolver: true,
+		Child: func(ctx context.Context, field graphql.CollectedField) (*graphql.FieldContext, error) {
+			switch field.Name {
+			case "cosmosAddress":
+				return ec.fieldContext_Participant_cosmosAddress(ctx, field)
+			case "nitroAddress":
+				return ec.fieldContext_Participant_nitroAddress(ctx, field)
+			case "role":
+				return ec.fieldContext_Participant_role(ctx, field)
+			case "kycId":
+				return ec.fieldContext_Participant_kycId(ctx, field)
+			}
+			return nil, fmt.Errorf("no field named %q was found under type Participant", field.Name)
+		},
+	}
+	defer func() {
+		if r := recover(); r != nil {
+			err = ec.Recover(ctx, r)
+			ec.Error(ctx, err)
+		}
+	}()
+	ctx = graphql.WithFieldContext(ctx, fc)
+	if fc.Args, err = ec.field_Query_getParticipantByNitroAddress_args(ctx, field.ArgumentMap(ec.Variables)); err != nil {
+		ec.Error(ctx, err)
+		return
+	}
+	return fc, nil
+}
+
 func (ec *executionContext) _Query___type(ctx context.Context, field graphql.CollectedField) (ret graphql.Marshaler) {
 	fc, err := ec.fieldContext_Query___type(ctx, field)
 	if err != nil {
@@ -9247,6 +9435,52 @@ func (ec *executionContext) _Query(ctx context.Context, sel ast.SelectionSet) gr
 				return ec.OperationContext.RootResolverMiddleware(ctx, innerFunc)
 			}
 
+			out.Concurrently(i, func() graphql.Marshaler {
+				return rrm(innerCtx)
+			})
+		case "getParticipantByAddress":
+			field := field
+
+			innerFunc := func(ctx context.Context) (res graphql.Marshaler) {
+				defer func() {
+					if r := recover(); r != nil {
+						ec.Error(ctx, ec.Recover(ctx, r))
+					}
+				}()
+				res = ec._Query_getParticipantByAddress(ctx, field)
+				if res == graphql.Null {
+					atomic.AddUint32(&invalids, 1)
+				}
+				return res
+			}
+
+			rrm := func(ctx context.Context) graphql.Marshaler {
+				return ec.OperationContext.RootResolverMiddleware(ctx, innerFunc)
+			}
+
+			out.Concurrently(i, func() graphql.Marshaler {
+				return rrm(innerCtx)
+			})
+		case "getParticipantByNitroAddress":
+			field := field
+
+			innerFunc := func(ctx context.Context) (res graphql.Marshaler) {
+				defer func() {
+					if r := recover(); r != nil {
+						ec.Error(ctx, ec.Recover(ctx, r))
+					}
+				}()
+				res = ec._Query_getParticipantByNitroAddress(ctx, field)
+				if res == graphql.Null {
+					atomic.AddUint32(&invalids, 1)
+				}
+				return res
+			}
+
+			rrm := func(ctx context.Context) graphql.Marshaler {
+				return ec.OperationContext.RootResolverMiddleware(ctx, innerFunc)
+			}
+
 			out.Concurrently(i, func() graphql.Marshaler {
 				return rrm(innerCtx)
 			})
@@ -10073,6 +10307,10 @@ func (ec *executionContext) marshalNNodeInfo2ᚖgitᚗvdbᚗtoᚋcercᚑioᚋlac
 	return ec._NodeInfo(ctx, sel, v)
 }
 
+func (ec *executionContext) marshalNParticipant2gitᚗvdbᚗtoᚋcercᚑioᚋlaconicdᚋgqlᚐParticipant(ctx context.Context, sel ast.SelectionSet, v Participant) graphql.Marshaler {
+	return ec._Participant(ctx, sel, &v)
+}
+
 func (ec *executionContext) marshalNParticipant2ᚕᚖgitᚗvdbᚗtoᚋcercᚑioᚋlaconicdᚋgqlᚐParticipant(ctx context.Context, sel ast.SelectionSet, v []*Participant) graphql.Marshaler {
 	ret := make(graphql.Array, len(v))
 	var wg sync.WaitGroup
@@ -10111,6 +10349,16 @@ func (ec *executionContext) marshalNParticipant2ᚕᚖgitᚗvdbᚗtoᚋcercᚑio
 	return ret
 }
 
+func (ec *executionContext) marshalNParticipant2ᚖgitᚗvdbᚗtoᚋcercᚑioᚋlaconicdᚋgqlᚐParticipant(ctx context.Context, sel ast.SelectionSet, v *Participant) 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._Participant(ctx, sel, v)
+}
+
 func (ec *executionContext) marshalNRecord2ᚕᚖgitᚗvdbᚗtoᚋcercᚑioᚋlaconicdᚋgqlᚐRecord(ctx context.Context, sel ast.SelectionSet, v []*Record) graphql.Marshaler {
 	ret := make(graphql.Array, len(v))
 	var wg sync.WaitGroup

gql/resolver.go

@@ -380,3 +380,39 @@ func (q queryResolver) GetParticipants(ctx context.Context) ([]*Participant, err
 
 	return participants, nil
 }
+
+func (q queryResolver) GetParticipantByAddress(ctx context.Context, address string) (*Participant, error) {
+	onboardingQueryClient := onboardingTypes.NewQueryClient(q.ctx)
+	participantResp, err := onboardingQueryClient.GetParticipantByAddress(ctx, &onboardingTypes.QueryGetParticipantByAddressRequest{Address: address})
+	if err != nil {
+		return nil, err
+	}
+
+	p := participantResp.Participant
+	participant := &Participant{
+		CosmosAddress: p.CosmosAddress,
+		NitroAddress:  p.NitroAddress,
+		Role:          p.Role,
+		KycID:         p.KycId,
+	}
+
+	return participant, nil
+}
+
+func (q queryResolver) GetParticipantByNitroAddress(ctx context.Context, nitroAddress string) (*Participant, error) {
+	onboardingQueryClient := onboardingTypes.NewQueryClient(q.ctx)
+	participantResp, err := onboardingQueryClient.GetParticipantByNitroAddress(ctx, &onboardingTypes.QueryGetParticipantByNitroAddressRequest{NitroAddress: nitroAddress})
+	if err != nil {
+		return nil, err
+	}
+
+	p := participantResp.Participant
+	participant := &Participant{
+		CosmosAddress: p.CosmosAddress,
+		NitroAddress:  p.NitroAddress,
+		Role:          p.Role,
+		KycID:         p.KycId,
+	}
+
+	return participant, nil
+}

proto/cerc/onboarding/v1/query.proto

@@ -16,6 +16,19 @@ service Query {
       returns (QueryParticipantsResponse) {
     option (google.api.http).get = "/cerc/onboarding/v1/participants";
   }
+
+  // GetParticipantByAddress queries a participant by cosmos (laconic) address
+  rpc GetParticipantByAddress(QueryGetParticipantByAddressRequest)
+      returns (QueryGetParticipantByAddressResponse) {
+    option (google.api.http).get = "/cerc/onboarding/v1/participants/{address}";
+  }
+
+  // GetParticipantByNitroAddress queries a participant by nitro address
+  rpc GetParticipantByNitroAddress(QueryGetParticipantByNitroAddressRequest)
+      returns (QueryGetParticipantByNitroAddressResponse) {
+    option (google.api.http).get =
+        "/cerc/onboarding/v1/participants/{nitro_address}";
+  }
 }
 
 // QueryParticipantsRequest queries participants
@@ -24,7 +37,7 @@ message QueryParticipantsRequest {
   cosmos.base.query.v1beta1.PageRequest pagination = 1;
 }
 
-// QueryParticipantsResponse is response type for get the participants
+// QueryParticipantsResponse is response type for querying the participants
 message QueryParticipantsResponse {
   repeated Participant participants = 1
       [ (gogoproto.moretags) = "json:\"participants\" yaml:\"participants\"" ];
@@ -32,3 +45,31 @@ message QueryParticipantsResponse {
   // pagination defines the pagination in the response.
   cosmos.base.query.v1beta1.PageResponse pagination = 2;
 }
+
+// QueryGetParticipantByAddressRequest queries participant by the laconic
+// address
+message QueryGetParticipantByAddressRequest {
+  // Laconic address
+  string address = 1;
+}
+
+// QueryGetParticipantByAddressResponse is response type for querying
+// participant by the laconic address
+message QueryGetParticipantByAddressResponse {
+  // Participant details
+  Participant participant = 1;
+}
+
+// QueryGetParticipantByNitroAddressRequest queries participant by the nitro
+// address
+message QueryGetParticipantByNitroAddressRequest {
+  // Nitro address
+  string nitro_address = 1;
+}
+
+// QueryGetParticipantByNitroAddressResponse is response type for querying
+// participant by the nitro address
+message QueryGetParticipantByNitroAddressResponse {
+  // Participant details
+  Participant participant = 1;
+}

x/onboarding/keeper/keeper.go

@@ -2,6 +2,7 @@ package keeper
 
 import (
 	"encoding/json"
+	"errors"
 	"fmt"
 
 	"cosmossdk.io/collections"
@@ -136,3 +137,35 @@ func (k Keeper) ListParticipants(ctx sdk.Context) ([]*onboardingTypes.Participan
 
 	return participants, nil
 }
+
+// GetParticipantByAddress - get participant by cosmos (laconic) address.
+func (k Keeper) GetParticipantByAddress(ctx sdk.Context, address string) (onboardingTypes.Participant, error) {
+	participant, err := k.Participants.Get(ctx, address)
+	if err != nil {
+		if errors.Is(err, collections.ErrNotFound) {
+			return onboardingTypes.Participant{}, errorsmod.Wrap(sdkerrors.ErrInvalidRequest, "participant with given address not found.")
+		}
+		return onboardingTypes.Participant{}, err
+	}
+
+	return participant, nil
+}
+
+// GetParticipantByNitroAddress - get participant by nitro address.
+func (k Keeper) GetParticipantByNitroAddress(ctx sdk.Context, nitroAddress string) (onboardingTypes.Participant, error) {
+	var participant onboardingTypes.Participant
+
+	err := k.Participants.Walk(ctx, nil, func(key string, value onboardingTypes.Participant) (bool, error) {
+		if value.NitroAddress == nitroAddress {
+			participant = value
+			return true, nil
+		}
+
+		return false, nil
+	})
+	if err != nil {
+		return onboardingTypes.Participant{}, err
+	}
+
+	return participant, nil
+}

x/onboarding/keeper/query_server.go

@@ -3,7 +3,9 @@ package keeper
 import (
 	"context"
 
+	errorsmod "cosmossdk.io/errors"
 	sdk "github.com/cosmos/cosmos-sdk/types"
+	sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
 
 	onboardingtypes "git.vdb.to/cerc-io/laconicd/x/onboarding"
 )
@@ -33,3 +35,41 @@ func (qs queryServer) Participants(
 
 	return &onboardingtypes.QueryParticipantsResponse{Participants: resp}, nil
 }
+
+// GetParticipantByAddress implements the GetParticipantByAddress query.
+func (qs queryServer) GetParticipantByAddress(
+	c context.Context,
+	req *onboardingtypes.QueryGetParticipantByAddressRequest,
+) (*onboardingtypes.QueryGetParticipantByAddressResponse, error) {
+	ctx := sdk.UnwrapSDKContext(c)
+
+	if req.Address == "" {
+		return nil, errorsmod.Wrap(sdkerrors.ErrInvalidRequest, "cosmos (laconic) address is required")
+	}
+
+	participant, err := qs.k.GetParticipantByAddress(ctx, req.Address)
+	if err != nil {
+		return nil, err
+	}
+
+	return &onboardingtypes.QueryGetParticipantByAddressResponse{Participant: &participant}, nil
+}
+
+// GetParticipantByNitroAddress implements the GetParticipantByNitroAddress query.
+func (qs queryServer) GetParticipantByNitroAddress(
+	c context.Context,
+	req *onboardingtypes.QueryGetParticipantByNitroAddressRequest,
+) (*onboardingtypes.QueryGetParticipantByNitroAddressResponse, error) {
+	ctx := sdk.UnwrapSDKContext(c)
+
+	if req.NitroAddress == "" {
+		return nil, errorsmod.Wrap(sdkerrors.ErrInvalidRequest, "nitro address is required")
+	}
+
+	participant, err := qs.k.GetParticipantByNitroAddress(ctx, req.NitroAddress)
+	if err != nil {
+		return nil, err
+	}
+
+	return &onboardingtypes.QueryGetParticipantByNitroAddressResponse{Participant: &participant}, nil
+}

x/onboarding/module/autocli.go

@@ -18,6 +18,22 @@ func (am AppModule) AutoCLIOptions() *autocliv1.ModuleOptions {
 					Short:          "List participants",
 					PositionalArgs: []*autocliv1.PositionalArgDescriptor{},
 				},
+				{
+					RpcMethod: "GetParticipantByAddress",
+					Use:       "get-by-address [address]",
+					Short:     "Get participant by address",
+					PositionalArgs: []*autocliv1.PositionalArgDescriptor{
+						{ProtoField: "address"},
+					},
+				},
+				{
+					RpcMethod: "GetParticipantByNitroAddress",
+					Use:       "get-by-nitro-address [nitro_address]",
+					Short:     "Get participant by nitro address",
+					PositionalArgs: []*autocliv1.PositionalArgDescriptor{
+						{ProtoField: "nitro_address"},
+					},
+				},
 			},
 		},
 		// TODO: Use JSON file for input

x/onboarding/query.pb.go

@@ -76,7 +76,7 @@ func (m *QueryParticipantsRequest) GetPagination() *query.PageRequest {
 	return nil
 }
 
-// QueryParticipantsResponse is response type for get the participants
+// QueryParticipantsResponse is response type for querying the participants
 type QueryParticipantsResponse struct {
 	Participants []*Participant `protobuf:"bytes,1,rep,name=participants,proto3" json:"participants,omitempty" json:"participants" yaml:"participants"`
 	// pagination defines the pagination in the response.
@@ -130,39 +130,247 @@ func (m *QueryParticipantsResponse) GetPagination() *query.PageResponse {
 	return nil
 }
 
+// QueryGetParticipantByAddressRequest queries participant by the laconic
+// address
+type QueryGetParticipantByAddressRequest struct {
+	// Laconic address
+	Address string `protobuf:"bytes,1,opt,name=address,proto3" json:"address,omitempty"`
+}
+
+func (m *QueryGetParticipantByAddressRequest) Reset()         { *m = QueryGetParticipantByAddressRequest{} }
+func (m *QueryGetParticipantByAddressRequest) String() string { return proto.CompactTextString(m) }
+func (*QueryGetParticipantByAddressRequest) ProtoMessage()    {}
+func (*QueryGetParticipantByAddressRequest) Descriptor() ([]byte, []int) {
+	return fileDescriptor_80831d904221d27d, []int{2}
+}
+func (m *QueryGetParticipantByAddressRequest) XXX_Unmarshal(b []byte) error {
+	return m.Unmarshal(b)
+}
+func (m *QueryGetParticipantByAddressRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	if deterministic {
+		return xxx_messageInfo_QueryGetParticipantByAddressRequest.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 *QueryGetParticipantByAddressRequest) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_QueryGetParticipantByAddressRequest.Merge(m, src)
+}
+func (m *QueryGetParticipantByAddressRequest) XXX_Size() int {
+	return m.Size()
+}
+func (m *QueryGetParticipantByAddressRequest) XXX_DiscardUnknown() {
+	xxx_messageInfo_QueryGetParticipantByAddressRequest.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_QueryGetParticipantByAddressRequest proto.InternalMessageInfo
+
+func (m *QueryGetParticipantByAddressRequest) GetAddress() string {
+	if m != nil {
+		return m.Address
+	}
+	return ""
+}
+
+// QueryGetParticipantByAddressResponse is response type for querying
+// participant by the laconic address
+type QueryGetParticipantByAddressResponse struct {
+	// Participant details
+	Participant *Participant `protobuf:"bytes,1,opt,name=participant,proto3" json:"participant,omitempty"`
+}
+
+func (m *QueryGetParticipantByAddressResponse) Reset()         { *m = QueryGetParticipantByAddressResponse{} }
+func (m *QueryGetParticipantByAddressResponse) String() string { return proto.CompactTextString(m) }
+func (*QueryGetParticipantByAddressResponse) ProtoMessage()    {}
+func (*QueryGetParticipantByAddressResponse) Descriptor() ([]byte, []int) {
+	return fileDescriptor_80831d904221d27d, []int{3}
+}
+func (m *QueryGetParticipantByAddressResponse) XXX_Unmarshal(b []byte) error {
+	return m.Unmarshal(b)
+}
+func (m *QueryGetParticipantByAddressResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	if deterministic {
+		return xxx_messageInfo_QueryGetParticipantByAddressResponse.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 *QueryGetParticipantByAddressResponse) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_QueryGetParticipantByAddressResponse.Merge(m, src)
+}
+func (m *QueryGetParticipantByAddressResponse) XXX_Size() int {
+	return m.Size()
+}
+func (m *QueryGetParticipantByAddressResponse) XXX_DiscardUnknown() {
+	xxx_messageInfo_QueryGetParticipantByAddressResponse.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_QueryGetParticipantByAddressResponse proto.InternalMessageInfo
+
+func (m *QueryGetParticipantByAddressResponse) GetParticipant() *Participant {
+	if m != nil {
+		return m.Participant
+	}
+	return nil
+}
+
+// QueryGetParticipantByNitroAddressRequest queries participant by the nitro
+// address
+type QueryGetParticipantByNitroAddressRequest struct {
+	// Nitro address
+	NitroAddress string `protobuf:"bytes,1,opt,name=nitro_address,json=nitroAddress,proto3" json:"nitro_address,omitempty"`
+}
+
+func (m *QueryGetParticipantByNitroAddressRequest) Reset() {
+	*m = QueryGetParticipantByNitroAddressRequest{}
+}
+func (m *QueryGetParticipantByNitroAddressRequest) String() string { return proto.CompactTextString(m) }
+func (*QueryGetParticipantByNitroAddressRequest) ProtoMessage()    {}
+func (*QueryGetParticipantByNitroAddressRequest) Descriptor() ([]byte, []int) {
+	return fileDescriptor_80831d904221d27d, []int{4}
+}
+func (m *QueryGetParticipantByNitroAddressRequest) XXX_Unmarshal(b []byte) error {
+	return m.Unmarshal(b)
+}
+func (m *QueryGetParticipantByNitroAddressRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	if deterministic {
+		return xxx_messageInfo_QueryGetParticipantByNitroAddressRequest.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 *QueryGetParticipantByNitroAddressRequest) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_QueryGetParticipantByNitroAddressRequest.Merge(m, src)
+}
+func (m *QueryGetParticipantByNitroAddressRequest) XXX_Size() int {
+	return m.Size()
+}
+func (m *QueryGetParticipantByNitroAddressRequest) XXX_DiscardUnknown() {
+	xxx_messageInfo_QueryGetParticipantByNitroAddressRequest.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_QueryGetParticipantByNitroAddressRequest proto.InternalMessageInfo
+
+func (m *QueryGetParticipantByNitroAddressRequest) GetNitroAddress() string {
+	if m != nil {
+		return m.NitroAddress
+	}
+	return ""
+}
+
+// QueryGetParticipantByNitroAddressResponse is response type for querying
+// participant by the nitro address
+type QueryGetParticipantByNitroAddressResponse struct {
+	// Participant details
+	Participant *Participant `protobuf:"bytes,1,opt,name=participant,proto3" json:"participant,omitempty"`
+}
+
+func (m *QueryGetParticipantByNitroAddressResponse) Reset() {
+	*m = QueryGetParticipantByNitroAddressResponse{}
+}
+func (m *QueryGetParticipantByNitroAddressResponse) String() string {
+	return proto.CompactTextString(m)
+}
+func (*QueryGetParticipantByNitroAddressResponse) ProtoMessage() {}
+func (*QueryGetParticipantByNitroAddressResponse) Descriptor() ([]byte, []int) {
+	return fileDescriptor_80831d904221d27d, []int{5}
+}
+func (m *QueryGetParticipantByNitroAddressResponse) XXX_Unmarshal(b []byte) error {
+	return m.Unmarshal(b)
+}
+func (m *QueryGetParticipantByNitroAddressResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	if deterministic {
+		return xxx_messageInfo_QueryGetParticipantByNitroAddressResponse.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 *QueryGetParticipantByNitroAddressResponse) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_QueryGetParticipantByNitroAddressResponse.Merge(m, src)
+}
+func (m *QueryGetParticipantByNitroAddressResponse) XXX_Size() int {
+	return m.Size()
+}
+func (m *QueryGetParticipantByNitroAddressResponse) XXX_DiscardUnknown() {
+	xxx_messageInfo_QueryGetParticipantByNitroAddressResponse.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_QueryGetParticipantByNitroAddressResponse proto.InternalMessageInfo
+
+func (m *QueryGetParticipantByNitroAddressResponse) GetParticipant() *Participant {
+	if m != nil {
+		return m.Participant
+	}
+	return nil
+}
+
 func init() {
 	proto.RegisterType((*QueryParticipantsRequest)(nil), "cerc.onboarding.v1.QueryParticipantsRequest")
 	proto.RegisterType((*QueryParticipantsResponse)(nil), "cerc.onboarding.v1.QueryParticipantsResponse")
+	proto.RegisterType((*QueryGetParticipantByAddressRequest)(nil), "cerc.onboarding.v1.QueryGetParticipantByAddressRequest")
+	proto.RegisterType((*QueryGetParticipantByAddressResponse)(nil), "cerc.onboarding.v1.QueryGetParticipantByAddressResponse")
+	proto.RegisterType((*QueryGetParticipantByNitroAddressRequest)(nil), "cerc.onboarding.v1.QueryGetParticipantByNitroAddressRequest")
+	proto.RegisterType((*QueryGetParticipantByNitroAddressResponse)(nil), "cerc.onboarding.v1.QueryGetParticipantByNitroAddressResponse")
 }
 
 func init() { proto.RegisterFile("cerc/onboarding/v1/query.proto", fileDescriptor_80831d904221d27d) }
 
 var fileDescriptor_80831d904221d27d = []byte{
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-	0x00, 0x00, 0xff, 0xff, 0x3b, 0xb7, 0xca, 0x13, 0xe4, 0x02, 0x00, 0x00,
+	0x9b, 0x01, 0xff, 0xdd, 0x59, 0x78, 0xce, 0x10, 0xa2, 0xb7, 0x00, 0xb6, 0xec, 0x53, 0x42, 0x9b,
+	0x75, 0x8d, 0x66, 0x9d, 0x75, 0x67, 0x6b, 0xc9, 0xea, 0x42, 0xba, 0xeb, 0xbd, 0xfa, 0xf8, 0xfd,
+	0xcd, 0x8a, 0x8b, 0xba, 0xa4, 0xe6, 0x6b, 0xab, 0xdc, 0xd5, 0x7b, 0x00, 0xaf, 0xcc, 0xd8, 0x24,
+	0xba, 0x33, 0x93, 0x74, 0xfe, 0xf1, 0x74, 0xb6, 0xff, 0x1e, 0x58, 0x0a, 0xf7, 0x8d, 0xf0, 0x4d,
+	0xb4, 0xb1, 0x48, 0x38, 0x79, 0x59, 0xee, 0xf9, 0x08, 0x7d, 0x02, 0x70, 0x75, 0xde, 0x42, 0xd1,
+	0xbd, 0xa5, 0xe5, 0xd4, 0x1c, 0x56, 0xe7, 0xfe, 0x3f, 0xa2, 0x4b, 0x47, 0xdb, 0xc6, 0x91, 0x8f,
+	0x6e, 0x2d, 0x76, 0x54, 0xb9, 0xdf, 0xa3, 0xc1, 0xe0, 0xc3, 0xc4, 0x01, 0xc7, 0x13, 0x07, 0x7c,
+	0x9b, 0x38, 0xe0, 0xf5, 0xd4, 0x69, 0x1c, 0x4f, 0x9d, 0xc6, 0x97, 0xa9, 0xd3, 0x78, 0xea, 0x25,
+	0x5c, 0xe3, 0x51, 0x1c, 0x62, 0x2d, 0x4d, 0xd7, 0x2d, 0x2e, 0xc9, 0x90, 0x46, 0x52, 0xf0, 0x28,
+	0x26, 0x2f, 0x2c, 0x8e, 0xf0, 0xbc, 0xf9, 0x63, 0xde, 0xfe, 0x19, 0x00, 0x00, 0xff, 0xff, 0x80,
+	0xc2, 0x03, 0x70, 0xec, 0x05, 0x00, 0x00,
 }
 
 // Reference imports to suppress errors if they are not otherwise used.
@@ -179,6 +387,10 @@ const _ = grpc.SupportPackageIsVersion4
 type QueryClient interface {
 	// Participants queries Participants list
 	Participants(ctx context.Context, in *QueryParticipantsRequest, opts ...grpc.CallOption) (*QueryParticipantsResponse, error)
+	// GetParticipantByAddress queries a participant by cosmos (laconic) address
+	GetParticipantByAddress(ctx context.Context, in *QueryGetParticipantByAddressRequest, opts ...grpc.CallOption) (*QueryGetParticipantByAddressResponse, error)
+	// GetParticipantByNitroAddress queries a participant by nitro address
+	GetParticipantByNitroAddress(ctx context.Context, in *QueryGetParticipantByNitroAddressRequest, opts ...grpc.CallOption) (*QueryGetParticipantByNitroAddressResponse, error)
 }
 
 type queryClient struct {
@@ -198,10 +410,32 @@ func (c *queryClient) Participants(ctx context.Context, in *QueryParticipantsReq
 	return out, nil
 }
 
+func (c *queryClient) GetParticipantByAddress(ctx context.Context, in *QueryGetParticipantByAddressRequest, opts ...grpc.CallOption) (*QueryGetParticipantByAddressResponse, error) {
+	out := new(QueryGetParticipantByAddressResponse)
+	err := c.cc.Invoke(ctx, "/cerc.onboarding.v1.Query/GetParticipantByAddress", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *queryClient) GetParticipantByNitroAddress(ctx context.Context, in *QueryGetParticipantByNitroAddressRequest, opts ...grpc.CallOption) (*QueryGetParticipantByNitroAddressResponse, error) {
+	out := new(QueryGetParticipantByNitroAddressResponse)
+	err := c.cc.Invoke(ctx, "/cerc.onboarding.v1.Query/GetParticipantByNitroAddress", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 // QueryServer is the server API for Query service.
 type QueryServer interface {
 	// Participants queries Participants list
 	Participants(context.Context, *QueryParticipantsRequest) (*QueryParticipantsResponse, error)
+	// GetParticipantByAddress queries a participant by cosmos (laconic) address
+	GetParticipantByAddress(context.Context, *QueryGetParticipantByAddressRequest) (*QueryGetParticipantByAddressResponse, error)
+	// GetParticipantByNitroAddress queries a participant by nitro address
+	GetParticipantByNitroAddress(context.Context, *QueryGetParticipantByNitroAddressRequest) (*QueryGetParticipantByNitroAddressResponse, error)
 }
 
 // UnimplementedQueryServer can be embedded to have forward compatible implementations.
@@ -211,6 +445,12 @@ type UnimplementedQueryServer struct {
 func (*UnimplementedQueryServer) Participants(ctx context.Context, req *QueryParticipantsRequest) (*QueryParticipantsResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method Participants not implemented")
 }
+func (*UnimplementedQueryServer) GetParticipantByAddress(ctx context.Context, req *QueryGetParticipantByAddressRequest) (*QueryGetParticipantByAddressResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method GetParticipantByAddress not implemented")
+}
+func (*UnimplementedQueryServer) GetParticipantByNitroAddress(ctx context.Context, req *QueryGetParticipantByNitroAddressRequest) (*QueryGetParticipantByNitroAddressResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method GetParticipantByNitroAddress not implemented")
+}
 
 func RegisterQueryServer(s grpc1.Server, srv QueryServer) {
 	s.RegisterService(&_Query_serviceDesc, srv)
@@ -234,6 +474,42 @@ func _Query_Participants_Handler(srv interface{}, ctx context.Context, dec func(
 	return interceptor(ctx, in, info, handler)
 }
 
+func _Query_GetParticipantByAddress_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(QueryGetParticipantByAddressRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(QueryServer).GetParticipantByAddress(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/cerc.onboarding.v1.Query/GetParticipantByAddress",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(QueryServer).GetParticipantByAddress(ctx, req.(*QueryGetParticipantByAddressRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _Query_GetParticipantByNitroAddress_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(QueryGetParticipantByNitroAddressRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(QueryServer).GetParticipantByNitroAddress(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/cerc.onboarding.v1.Query/GetParticipantByNitroAddress",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(QueryServer).GetParticipantByNitroAddress(ctx, req.(*QueryGetParticipantByNitroAddressRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 var _Query_serviceDesc = grpc.ServiceDesc{
 	ServiceName: "cerc.onboarding.v1.Query",
 	HandlerType: (*QueryServer)(nil),
@@ -242,6 +518,14 @@ var _Query_serviceDesc = grpc.ServiceDesc{
 			MethodName: "Participants",
 			Handler:    _Query_Participants_Handler,
 		},
+		{
+			MethodName: "GetParticipantByAddress",
+			Handler:    _Query_GetParticipantByAddress_Handler,
+		},
+		{
+			MethodName: "GetParticipantByNitroAddress",
+			Handler:    _Query_GetParticipantByNitroAddress_Handler,
+		},
 	},
 	Streams:  []grpc.StreamDesc{},
 	Metadata: "cerc/onboarding/v1/query.proto",
@@ -331,6 +615,136 @@ func (m *QueryParticipantsResponse) MarshalToSizedBuffer(dAtA []byte) (int, erro
 	return len(dAtA) - i, nil
 }
 
+func (m *QueryGetParticipantByAddressRequest) 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 *QueryGetParticipantByAddressRequest) MarshalTo(dAtA []byte) (int, error) {
+	size := m.Size()
+	return m.MarshalToSizedBuffer(dAtA[:size])
+}
+
+func (m *QueryGetParticipantByAddressRequest) MarshalToSizedBuffer(dAtA []byte) (int, error) {
+	i := len(dAtA)
+	_ = i
+	var l int
+	_ = l
+	if len(m.Address) > 0 {
+		i -= len(m.Address)
+		copy(dAtA[i:], m.Address)
+		i = encodeVarintQuery(dAtA, i, uint64(len(m.Address)))
+		i--
+		dAtA[i] = 0xa
+	}
+	return len(dAtA) - i, nil
+}
+
+func (m *QueryGetParticipantByAddressResponse) 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 *QueryGetParticipantByAddressResponse) MarshalTo(dAtA []byte) (int, error) {
+	size := m.Size()
+	return m.MarshalToSizedBuffer(dAtA[:size])
+}
+
+func (m *QueryGetParticipantByAddressResponse) MarshalToSizedBuffer(dAtA []byte) (int, error) {
+	i := len(dAtA)
+	_ = i
+	var l int
+	_ = l
+	if m.Participant != nil {
+		{
+			size, err := m.Participant.MarshalToSizedBuffer(dAtA[:i])
+			if err != nil {
+				return 0, err
+			}
+			i -= size
+			i = encodeVarintQuery(dAtA, i, uint64(size))
+		}
+		i--
+		dAtA[i] = 0xa
+	}
+	return len(dAtA) - i, nil
+}
+
+func (m *QueryGetParticipantByNitroAddressRequest) 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 *QueryGetParticipantByNitroAddressRequest) MarshalTo(dAtA []byte) (int, error) {
+	size := m.Size()
+	return m.MarshalToSizedBuffer(dAtA[:size])
+}
+
+func (m *QueryGetParticipantByNitroAddressRequest) MarshalToSizedBuffer(dAtA []byte) (int, error) {
+	i := len(dAtA)
+	_ = i
+	var l int
+	_ = l
+	if len(m.NitroAddress) > 0 {
+		i -= len(m.NitroAddress)
+		copy(dAtA[i:], m.NitroAddress)
+		i = encodeVarintQuery(dAtA, i, uint64(len(m.NitroAddress)))
+		i--
+		dAtA[i] = 0xa
+	}
+	return len(dAtA) - i, nil
+}
+
+func (m *QueryGetParticipantByNitroAddressResponse) 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 *QueryGetParticipantByNitroAddressResponse) MarshalTo(dAtA []byte) (int, error) {
+	size := m.Size()
+	return m.MarshalToSizedBuffer(dAtA[:size])
+}
+
+func (m *QueryGetParticipantByNitroAddressResponse) MarshalToSizedBuffer(dAtA []byte) (int, error) {
+	i := len(dAtA)
+	_ = i
+	var l int
+	_ = l
+	if m.Participant != nil {
+		{
+			size, err := m.Participant.MarshalToSizedBuffer(dAtA[:i])
+			if err != nil {
+				return 0, err
+			}
+			i -= size
+			i = encodeVarintQuery(dAtA, i, uint64(size))
+		}
+		i--
+		dAtA[i] = 0xa
+	}
+	return len(dAtA) - i, nil
+}
+
 func encodeVarintQuery(dAtA []byte, offset int, v uint64) int {
 	offset -= sovQuery(v)
 	base := offset
@@ -374,6 +788,58 @@ func (m *QueryParticipantsResponse) Size() (n int) {
 	return n
 }
 
+func (m *QueryGetParticipantByAddressRequest) Size() (n int) {
+	if m == nil {
+		return 0
+	}
+	var l int
+	_ = l
+	l = len(m.Address)
+	if l > 0 {
+		n += 1 + l + sovQuery(uint64(l))
+	}
+	return n
+}
+
+func (m *QueryGetParticipantByAddressResponse) Size() (n int) {
+	if m == nil {
+		return 0
+	}
+	var l int
+	_ = l
+	if m.Participant != nil {
+		l = m.Participant.Size()
+		n += 1 + l + sovQuery(uint64(l))
+	}
+	return n
+}
+
+func (m *QueryGetParticipantByNitroAddressRequest) Size() (n int) {
+	if m == nil {
+		return 0
+	}
+	var l int
+	_ = l
+	l = len(m.NitroAddress)
+	if l > 0 {
+		n += 1 + l + sovQuery(uint64(l))
+	}
+	return n
+}
+
+func (m *QueryGetParticipantByNitroAddressResponse) Size() (n int) {
+	if m == nil {
+		return 0
+	}
+	var l int
+	_ = l
+	if m.Participant != nil {
+		l = m.Participant.Size()
+		n += 1 + l + sovQuery(uint64(l))
+	}
+	return n
+}
+
 func sovQuery(x uint64) (n int) {
 	return (math_bits.Len64(x|1) + 6) / 7
 }
@@ -586,6 +1052,342 @@ func (m *QueryParticipantsResponse) Unmarshal(dAtA []byte) error {
 	}
 	return nil
 }
+func (m *QueryGetParticipantByAddressRequest) 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 ErrIntOverflowQuery
+			}
+			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: QueryGetParticipantByAddressRequest: wiretype end group for non-group")
+		}
+		if fieldNum <= 0 {
+			return fmt.Errorf("proto: QueryGetParticipantByAddressRequest: illegal tag %d (wire type %d)", fieldNum, wire)
+		}
+		switch fieldNum {
+		case 1:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Address", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowQuery
+				}
+				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 ErrInvalidLengthQuery
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex < 0 {
+				return ErrInvalidLengthQuery
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.Address = string(dAtA[iNdEx:postIndex])
+			iNdEx = postIndex
+		default:
+			iNdEx = preIndex
+			skippy, err := skipQuery(dAtA[iNdEx:])
+			if err != nil {
+				return err
+			}
+			if (skippy < 0) || (iNdEx+skippy) < 0 {
+				return ErrInvalidLengthQuery
+			}
+			if (iNdEx + skippy) > l {
+				return io.ErrUnexpectedEOF
+			}
+			iNdEx += skippy
+		}
+	}
+
+	if iNdEx > l {
+		return io.ErrUnexpectedEOF
+	}
+	return nil
+}
+func (m *QueryGetParticipantByAddressResponse) 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 ErrIntOverflowQuery
+			}
+			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: QueryGetParticipantByAddressResponse: wiretype end group for non-group")
+		}
+		if fieldNum <= 0 {
+			return fmt.Errorf("proto: QueryGetParticipantByAddressResponse: illegal tag %d (wire type %d)", fieldNum, wire)
+		}
+		switch fieldNum {
+		case 1:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Participant", wireType)
+			}
+			var msglen int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowQuery
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				msglen |= int(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			if msglen < 0 {
+				return ErrInvalidLengthQuery
+			}
+			postIndex := iNdEx + msglen
+			if postIndex < 0 {
+				return ErrInvalidLengthQuery
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			if m.Participant == nil {
+				m.Participant = &Participant{}
+			}
+			if err := m.Participant.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
+				return err
+			}
+			iNdEx = postIndex
+		default:
+			iNdEx = preIndex
+			skippy, err := skipQuery(dAtA[iNdEx:])
+			if err != nil {
+				return err
+			}
+			if (skippy < 0) || (iNdEx+skippy) < 0 {
+				return ErrInvalidLengthQuery
+			}
+			if (iNdEx + skippy) > l {
+				return io.ErrUnexpectedEOF
+			}
+			iNdEx += skippy
+		}
+	}
+
+	if iNdEx > l {
+		return io.ErrUnexpectedEOF
+	}
+	return nil
+}
+func (m *QueryGetParticipantByNitroAddressRequest) 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 ErrIntOverflowQuery
+			}
+			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: QueryGetParticipantByNitroAddressRequest: wiretype end group for non-group")
+		}
+		if fieldNum <= 0 {
+			return fmt.Errorf("proto: QueryGetParticipantByNitroAddressRequest: illegal tag %d (wire type %d)", fieldNum, wire)
+		}
+		switch fieldNum {
+		case 1:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field NitroAddress", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowQuery
+				}
+				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 ErrInvalidLengthQuery
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex < 0 {
+				return ErrInvalidLengthQuery
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.NitroAddress = string(dAtA[iNdEx:postIndex])
+			iNdEx = postIndex
+		default:
+			iNdEx = preIndex
+			skippy, err := skipQuery(dAtA[iNdEx:])
+			if err != nil {
+				return err
+			}
+			if (skippy < 0) || (iNdEx+skippy) < 0 {
+				return ErrInvalidLengthQuery
+			}
+			if (iNdEx + skippy) > l {
+				return io.ErrUnexpectedEOF
+			}
+			iNdEx += skippy
+		}
+	}
+
+	if iNdEx > l {
+		return io.ErrUnexpectedEOF
+	}
+	return nil
+}
+func (m *QueryGetParticipantByNitroAddressResponse) 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 ErrIntOverflowQuery
+			}
+			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: QueryGetParticipantByNitroAddressResponse: wiretype end group for non-group")
+		}
+		if fieldNum <= 0 {
+			return fmt.Errorf("proto: QueryGetParticipantByNitroAddressResponse: illegal tag %d (wire type %d)", fieldNum, wire)
+		}
+		switch fieldNum {
+		case 1:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Participant", wireType)
+			}
+			var msglen int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowQuery
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				msglen |= int(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			if msglen < 0 {
+				return ErrInvalidLengthQuery
+			}
+			postIndex := iNdEx + msglen
+			if postIndex < 0 {
+				return ErrInvalidLengthQuery
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			if m.Participant == nil {
+				m.Participant = &Participant{}
+			}
+			if err := m.Participant.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
+				return err
+			}
+			iNdEx = postIndex
+		default:
+			iNdEx = preIndex
+			skippy, err := skipQuery(dAtA[iNdEx:])
+			if err != nil {
+				return err
+			}
+			if (skippy < 0) || (iNdEx+skippy) < 0 {
+				return ErrInvalidLengthQuery
+			}
+			if (iNdEx + skippy) > l {
+				return io.ErrUnexpectedEOF
+			}
+			iNdEx += skippy
+		}
+	}
+
+	if iNdEx > l {
+		return io.ErrUnexpectedEOF
+	}
+	return nil
+}
 func skipQuery(dAtA []byte) (n int, err error) {
 	l := len(dAtA)
 	iNdEx := 0

x/onboarding/query.pb.gw.go

@@ -69,6 +69,114 @@ func local_request_Query_Participants_0(ctx context.Context, marshaler runtime.M
 
 }
 
+func request_Query_GetParticipantByAddress_0(ctx context.Context, marshaler runtime.Marshaler, client QueryClient, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
+	var protoReq QueryGetParticipantByAddressRequest
+	var metadata runtime.ServerMetadata
+
+	var (
+		val string
+		ok  bool
+		err error
+		_   = err
+	)
+
+	val, ok = pathParams["address"]
+	if !ok {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "missing parameter %s", "address")
+	}
+
+	protoReq.Address, err = runtime.String(val)
+
+	if err != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "type mismatch, parameter: %s, error: %v", "address", err)
+	}
+
+	msg, err := client.GetParticipantByAddress(ctx, &protoReq, grpc.Header(&metadata.HeaderMD), grpc.Trailer(&metadata.TrailerMD))
+	return msg, metadata, err
+
+}
+
+func local_request_Query_GetParticipantByAddress_0(ctx context.Context, marshaler runtime.Marshaler, server QueryServer, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
+	var protoReq QueryGetParticipantByAddressRequest
+	var metadata runtime.ServerMetadata
+
+	var (
+		val string
+		ok  bool
+		err error
+		_   = err
+	)
+
+	val, ok = pathParams["address"]
+	if !ok {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "missing parameter %s", "address")
+	}
+
+	protoReq.Address, err = runtime.String(val)
+
+	if err != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "type mismatch, parameter: %s, error: %v", "address", err)
+	}
+
+	msg, err := server.GetParticipantByAddress(ctx, &protoReq)
+	return msg, metadata, err
+
+}
+
+func request_Query_GetParticipantByNitroAddress_0(ctx context.Context, marshaler runtime.Marshaler, client QueryClient, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
+	var protoReq QueryGetParticipantByNitroAddressRequest
+	var metadata runtime.ServerMetadata
+
+	var (
+		val string
+		ok  bool
+		err error
+		_   = err
+	)
+
+	val, ok = pathParams["nitro_address"]
+	if !ok {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "missing parameter %s", "nitro_address")
+	}
+
+	protoReq.NitroAddress, err = runtime.String(val)
+
+	if err != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "type mismatch, parameter: %s, error: %v", "nitro_address", err)
+	}
+
+	msg, err := client.GetParticipantByNitroAddress(ctx, &protoReq, grpc.Header(&metadata.HeaderMD), grpc.Trailer(&metadata.TrailerMD))
+	return msg, metadata, err
+
+}
+
+func local_request_Query_GetParticipantByNitroAddress_0(ctx context.Context, marshaler runtime.Marshaler, server QueryServer, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
+	var protoReq QueryGetParticipantByNitroAddressRequest
+	var metadata runtime.ServerMetadata
+
+	var (
+		val string
+		ok  bool
+		err error
+		_   = err
+	)
+
+	val, ok = pathParams["nitro_address"]
+	if !ok {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "missing parameter %s", "nitro_address")
+	}
+
+	protoReq.NitroAddress, err = runtime.String(val)
+
+	if err != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "type mismatch, parameter: %s, error: %v", "nitro_address", err)
+	}
+
+	msg, err := server.GetParticipantByNitroAddress(ctx, &protoReq)
+	return msg, metadata, err
+
+}
+
 // RegisterQueryHandlerServer registers the http handlers for service Query to "mux".
 // UnaryRPC     :call QueryServer directly.
 // StreamingRPC :currently unsupported pending https://github.com/grpc/grpc-go/issues/906.
@@ -98,6 +206,52 @@ func RegisterQueryHandlerServer(ctx context.Context, mux *runtime.ServeMux, serv
 
 	})
 
+	mux.Handle("GET", pattern_Query_GetParticipantByAddress_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_Query_GetParticipantByAddress_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_Query_GetParticipantByAddress_0(ctx, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
+
+	})
+
+	mux.Handle("GET", pattern_Query_GetParticipantByNitroAddress_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_Query_GetParticipantByNitroAddress_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_Query_GetParticipantByNitroAddress_0(ctx, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
+
+	})
+
 	return nil
 }
 
@@ -159,13 +313,61 @@ func RegisterQueryHandlerClient(ctx context.Context, mux *runtime.ServeMux, clie
 
 	})
 
+	mux.Handle("GET", pattern_Query_GetParticipantByAddress_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_Query_GetParticipantByAddress_0(rctx, inboundMarshaler, client, req, pathParams)
+		ctx = runtime.NewServerMetadataContext(ctx, md)
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+
+		forward_Query_GetParticipantByAddress_0(ctx, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
+
+	})
+
+	mux.Handle("GET", pattern_Query_GetParticipantByNitroAddress_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_Query_GetParticipantByNitroAddress_0(rctx, inboundMarshaler, client, req, pathParams)
+		ctx = runtime.NewServerMetadataContext(ctx, md)
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+
+		forward_Query_GetParticipantByNitroAddress_0(ctx, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
+
+	})
+
 	return nil
 }
 
 var (
 	pattern_Query_Participants_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2, 2, 3}, []string{"cerc", "onboarding", "v1", "participants"}, "", runtime.AssumeColonVerbOpt(false)))
+
+	pattern_Query_GetParticipantByAddress_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2, 2, 3, 1, 0, 4, 1, 5, 4}, []string{"cerc", "onboarding", "v1", "participants", "address"}, "", runtime.AssumeColonVerbOpt(false)))
+
+	pattern_Query_GetParticipantByNitroAddress_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2, 2, 3, 1, 0, 4, 1, 5, 4}, []string{"cerc", "onboarding", "v1", "participants", "nitro_address"}, "", runtime.AssumeColonVerbOpt(false)))
 )
 
 var (
 	forward_Query_Participants_0 = runtime.ForwardResponseMessage
+
+	forward_Query_GetParticipantByAddress_0 = runtime.ForwardResponseMessage
+
+	forward_Query_GetParticipantByNitroAddress_0 = runtime.ForwardResponseMessage
 )