diff --git a/lib/jsonrpc/handler.go b/lib/jsonrpc/handler.go
index 4268e8af6..5d4380046 100644
--- a/lib/jsonrpc/handler.go
+++ b/lib/jsonrpc/handler.go
@@ -192,7 +192,7 @@ func (h handlers) handle(ctx context.Context, req request, w func(func(io.Writer
 	for i := 0; i < handler.nParams; i++ {
 		rp := reflect.New(handler.paramReceivers[i])
 		if err := json.NewDecoder(bytes.NewReader(req.Params[i].data)).Decode(rp.Interface()); err != nil {
-			rpcError(w, &req, rpcParseError, xerrors.Errorf("unmarshaling params for '%s': %w", handler.handlerFunc, err))
+			rpcError(w, &req, rpcParseError, xerrors.Errorf("unmarshaling params for '%s' (param: %T): %w", req.Method, rp.Interface(), err))
 			stats.Record(ctx, metrics.RPCRequestError.M(1))
 			return
 		}
diff --git a/lotuspond/front/src/Address.js b/lotuspond/front/src/Address.js
index 1ac98d7f2..9167abfb1 100644
--- a/lotuspond/front/src/Address.js
+++ b/lotuspond/front/src/Address.js
@@ -50,11 +50,11 @@ class Address extends React.Component {
 
     try {
       balance = await this.props.client.call('Filecoin.WalletBalance', [this.props.addr])
-      actor = await this.props.client.call('Filecoin.StateGetActor', [this.props.addr, this.props.ts || null])
+      actor = await this.props.client.call('Filecoin.StateGetActor', [this.props.addr, (this.props.ts || {}).Cids])
 
       actorInfo = await this.actorInfo(actor)
       if(this.props.miner) {
-        minerInfo = await this.props.client.call('Filecoin.StateMinerPower', [this.props.addr, this.props.ts || null])
+        minerInfo = await this.props.client.call('Filecoin.StateMinerPower', [this.props.addr, (this.props.ts || {}).Cids])
       }
       if(this.props.nonce) {
         nonce = await this.props.client.call('Filecoin.MpoolGetNonce', [this.props.addr])
@@ -82,7 +82,7 @@ class Address extends React.Component {
     let info = <span>({mh.digest.toString()}{method})</span>
     switch(mh.digest.toString()) {
       case 'paych':
-        const actstate = await this.props.client.call('Filecoin.StateReadState', [actor, this.props.ts || null])
+        const actstate = await this.props.client.call('Filecoin.StateReadState', [actor, (this.props.ts || {}).Cids])
         info = <span>({mh.digest.toString()}{method} to <Address nobalance={true} client={this.props.client} addr={actstate.State.To} mountWindow={this.props.mountWindow}/>)</span>
     }
 
diff --git a/lotuspond/front/src/BlockLink.js b/lotuspond/front/src/BlockLink.js
index bfdbd5ea9..1d524999f 100644
--- a/lotuspond/front/src/BlockLink.js
+++ b/lotuspond/front/src/BlockLink.js
@@ -12,7 +12,7 @@ export class BlockLinks extends React.Component {
         block = this.props.blocks[k]
       }
 
-      return <span><BlockLink key={c + '-' + k} block={block} conn={this.props.conn} cid={c} mountWindow={this.props.mountWindow}/> </span>
+      return <span key={c + '-' + k}><BlockLink block={block} conn={this.props.conn} cid={c} mountWindow={this.props.mountWindow}/> </span>
     })
   }
 }
diff --git a/lotuspond/front/src/FullNode.js b/lotuspond/front/src/FullNode.js
index eb530dee3..f9ca779a5 100644
--- a/lotuspond/front/src/FullNode.js
+++ b/lotuspond/front/src/FullNode.js
@@ -45,7 +45,7 @@ class FullNode extends React.Component {
       return this.props.client.call('Filecoin.PaychVoucherList', [paych])
     }))
 
-    let mpoolPending = (await this.props.client.call('Filecoin.MpoolPending', [tipset])).length
+    let mpoolPending = (await this.props.client.call('Filecoin.MpoolPending', [tipset.Cids])).length
 
     this.setState(() => ({
       id: id,
@@ -64,13 +64,13 @@ class FullNode extends React.Component {
   }
 
   async newSecpAddr() {
-    const t = "secp256k1"
+    const t = 1
     await this.props.client.call("Filecoin.WalletNew", [t])
     this.loadInfo()
   }
 
   async newBLSAddr() {
-    const t = "bls"
+    const t = 2
     await this.props.client.call("Filecoin.WalletNew", [t])
     this.loadInfo()
   }
diff --git a/lotuspond/front/src/State.js b/lotuspond/front/src/State.js
index d5b81ff83..ade42f2e5 100644
--- a/lotuspond/front/src/State.js
+++ b/lotuspond/front/src/State.js
@@ -22,7 +22,7 @@ class State extends React.Component {
 
   async componentDidMount() {
     const tipset = this.props.tipset || await this.props.client.call("Filecoin.ChainHead", [])
-    const actstate = await this.props.client.call('Filecoin.StateReadState', [this.props.actor, tipset])
+    const actstate = await this.props.client.call('Filecoin.StateReadState', [this.props.actor, tipset.Cids])
 
     const c = new CID(this.props.actor.Code['/'])
     const mh = multihash.decode(c.multihash)
@@ -37,7 +37,7 @@ class State extends React.Component {
       const Stelem = this.byCode[this.state.code]
       state = <Stelem addr={this.props.addr} actor={this.props.actor} client={this.props.client} mountWindow={this.props.mountWindow} tipset={this.props.tipset}/>
     } else {
-      state = <div>{Object.keys(this.state.State).map(k => <div key={k}>{k}: <span>{JSON.stringify(this.state.State[k])}</span></div>)}</div>
+      state = <div>{Object.keys(this.state.State || {}).map(k => <div key={k}>{k}: <span>{JSON.stringify(this.state.State[k])}</span></div>)}</div>
     }
 
     const content = <div className="State">
@@ -60,7 +60,7 @@ class InitState extends React.Component {
 
   async componentDidMount() {
     const tipset = await this.props.client.call("Filecoin.ChainHead", []) // TODO: from props
-    const actors = await this.props.client.call("Filecoin.StateListActors", [tipset])
+    const actors = await this.props.client.call("Filecoin.StateListActors", [tipset.Cids])
     this.setState({actors: actors})
   }
 
@@ -79,8 +79,8 @@ class PowerState extends React.Component {
 
   async componentDidMount() {
     const tipset = await this.props.client.call("Filecoin.ChainHead", []) // TODO: from props
-    const actors = await this.props.client.call("Filecoin.StateListMiners", [tipset])
-    const state = await this.props.client.call('Filecoin.StateReadState', [this.props.actor, tipset])
+    const actors = await this.props.client.call("Filecoin.StateListMiners", [tipset.Cids])
+    const state = await this.props.client.call('Filecoin.StateReadState', [this.props.actor, tipset.Cids])
 
     this.setState({actors, state})
   }
@@ -105,9 +105,9 @@ class MarketState extends React.Component {
 
   async componentDidMount() {
     const tipset = await this.props.client.call("Filecoin.ChainHead", []) // TODO: from props
-    const participants = await this.props.client.call("Filecoin.StateMarketParticipants", [tipset])
-    const deals = await this.props.client.call("Filecoin.StateMarketDeals", [tipset])
-    const state = await this.props.client.call('Filecoin.StateReadState', [this.props.actor, tipset])
+    const participants = await this.props.client.call("Filecoin.StateMarketParticipants", [tipset.Cids])
+    const deals = await this.props.client.call("Filecoin.StateMarketDeals", [tipset.Cids])
+    const state = await this.props.client.call('Filecoin.StateReadState', [this.props.actor, tipset.Cids])
     this.setState({participants, deals, nextDeal: state.State.NextDealID})
   }
 
@@ -128,15 +128,15 @@ class MarketState extends React.Component {
         <div>---</div>
         <div>Deals ({this.state.nextDeal} Total):</div>
         <table>
-          <tr><td>id</td><td>Active</td><td>Client</td><td>Provider</td><td>Size</td><td>Price</td><td>Duration</td></tr>
+          <tr><td>id</td><td>Started</td><td>Client</td><td>Provider</td><td>Size</td><td>Price</td><td>Duration</td></tr>
           {Object.keys(this.state.deals).map(d => <tr>
             <td>{d}</td>
-            <td>{this.state.deals[d].ActivationEpoch || "No"}</td>
-            <td><Address short={true} addr={this.state.deals[d].Deal.Proposal.Client} client={this.props.client} mountWindow={this.props.mountWindow}/></td>
-            <td><Address short={true} addr={this.state.deals[d].Deal.Proposal.Provider} client={this.props.client} mountWindow={this.props.mountWindow}/></td>
-            <td>{this.state.deals[d].Deal.Proposal.PieceSize}B</td>
-            <td>{this.state.deals[d].Deal.Proposal.StoragePricePerEpoch*this.state.deals[d].Deal.Proposal.Duration}</td>
-            <td>{this.state.deals[d].Deal.Proposal.Duration}</td>
+            <td>{this.state.deals[d].State.SectorStartEpoch || "No"}</td>
+            <td><Address short={true} addr={this.state.deals[d].Proposal.Client} client={this.props.client} mountWindow={this.props.mountWindow}/></td>
+            <td><Address short={true} addr={this.state.deals[d].Proposal.Provider} client={this.props.client} mountWindow={this.props.mountWindow}/></td>
+            <td>{this.state.deals[d].Proposal.PieceSize}B</td>
+            <td>{this.state.deals[d].Proposal.StoragePricePerEpoch*(this.state.deals[d].Proposal.EndEpoch-this.state.deals[d].Proposal.StartEpoch)}</td>
+            <td>{this.state.deals[d].Proposal.EndEpoch-this.state.deals[d].Proposal.StartEpoch}</td>
           </tr>)}
         </table>
       </div>
@@ -153,17 +153,17 @@ class MinerState extends React.Component {
   async componentDidMount() {
     const tipset = await this.props.client.call("Filecoin.ChainHead", []) // TODO: from props
 
-    const state = await this.props.client.call('Filecoin.StateReadState', [this.props.actor, tipset])
-    const sectorSize = await this.props.client.call("Filecoin.StateMinerSectorSize", [this.props.addr, tipset])
-    const worker = await this.props.client.call("Filecoin.StateMinerWorker", [this.props.addr, tipset])
+    const state = await this.props.client.call('Filecoin.StateReadState', [this.props.actor, tipset.Cids])
+    const sectorSize = await this.props.client.call("Filecoin.StateMinerSectorSize", [this.props.addr, tipset.Cids])
+    const worker = await this.props.client.call("Filecoin.StateMinerWorker", [this.props.addr, tipset.Cids])
 
-    const tpow = await this.props.client.call("Filecoin.StateMinerPower", [this.props.addr, tipset])
+    const tpow = await this.props.client.call("Filecoin.StateMinerPower", [this.props.addr, tipset.Cids])
     const networkPower = tpow.TotalPower
 
     let sectors = {}
 
-    const sset = await this.props.client.call("Filecoin.StateMinerSectors", [this.props.addr, tipset]) || []
-    const pset = await this.props.client.call("Filecoin.StateMinerProvingSet", [this.props.addr, tipset]) || []
+    const sset = await this.props.client.call("Filecoin.StateMinerSectors", [this.props.addr, tipset.Cids]) || []
+    const pset = await this.props.client.call("Filecoin.StateMinerProvingSet", [this.props.addr, tipset.Cids]) || []
 
     sset.forEach(s => sectors[s.SectorID] = {...s, sectorSet: true})
     pset.forEach(s => sectors[s.SectorID] = {...(sectors[s.SectorID] || s), provingSet: true})
@@ -181,7 +181,7 @@ class MinerState extends React.Component {
     return <div>
       <div>Worker: <Address addr={this.state.worker} client={this.props.client} mountWindow={this.props.mountWindow}/></div>
       <div>Sector Size: <b>{this.state.sectorSize/1024}</b> KiB</div>
-      <div>Power: <b>{state.Power}</b> (<b>{state.Power/this.state.networkPower*100}</b>%)</div>
+      <div>Power: <b>todoPower</b> (<b>{1/this.state.networkPower*100}</b>%)</div>
       <div>Election Period Start: <b>{state.ElectionPeriodStart}</b></div>
       <div>Slashed: <b>{state.SlashedAt === 0 ? "NO" : state.SlashedAt}</b></div>
       <div>