diff --git a/access/legacy/convert/convert.go b/access/legacy/convert/convert.go
index 1654ddd05ff..ad570f23893 100644
--- a/access/legacy/convert/convert.go
+++ b/access/legacy/convert/convert.go
@@ -77,7 +77,7 @@ func MessageToTransaction(m *entitiesproto.Transaction, chain flow.Chain) (flow.
 func TransactionToMessage(tb flow.TransactionBody) *entitiesproto.Transaction {
 	proposalKeyMessage := &entitiesproto.Transaction_ProposalKey{
 		Address:        tb.ProposalKey.Address.Bytes(),
-		KeyId:          uint32(tb.ProposalKey.KeyID),
+		KeyId:          uint32(tb.ProposalKey.KeyIndex),
 		SequenceNumber: tb.ProposalKey.SequenceNumber,
 	}
 
@@ -91,7 +91,7 @@ func TransactionToMessage(tb flow.TransactionBody) *entitiesproto.Transaction {
 	for i, sig := range tb.PayloadSignatures {
 		payloadSigMessages[i] = &entitiesproto.Transaction_Signature{
 			Address:   sig.Address.Bytes(),
-			KeyId:     uint32(sig.KeyID),
+			KeyId:     uint32(sig.KeyIndex),
 			Signature: sig.Signature,
 		}
 	}
@@ -101,7 +101,7 @@ func TransactionToMessage(tb flow.TransactionBody) *entitiesproto.Transaction {
 	for i, sig := range tb.EnvelopeSignatures {
 		envelopeSigMessages[i] = &entitiesproto.Transaction_Signature{
 			Address:   sig.Address.Bytes(),
-			KeyId:     uint32(sig.KeyID),
+			KeyId:     uint32(sig.KeyIndex),
 			Signature: sig.Signature,
 		}
 	}
@@ -231,7 +231,7 @@ func AccountToMessage(a *flow.Account) (*entitiesproto.Account, error) {
 	return &entitiesproto.Account{
 		Address: a.Address.Bytes(),
 		Balance: a.Balance,
-		Code:    a.Code,
+		Code:    nil,
 		Keys:    keys,
 	}, nil
 }
diff --git a/cmd/util/cmd/exec-data-json-export/transaction_exporter.go b/cmd/util/cmd/exec-data-json-export/transaction_exporter.go
index 552388ec8c3..959da6787c9 100644
--- a/cmd/util/cmd/exec-data-json-export/transaction_exporter.go
+++ b/cmd/util/cmd/exec-data-json-export/transaction_exporter.go
@@ -32,7 +32,7 @@ type transactionInContext struct {
 	ProposalSequenceNumber uint64   `json:"proposal_sequence_number"`
 	AuthorizersAddressHex  []string `json:"authorizers_address_hex"`
 	EnvelopeSize           int      `json:"envelope_size"`
-	// Address(hex) + ~ + SignerIndex + ~ + KeyID + ~ + Signature(hex)
+	// Address(hex) + ~ + SignerIndex + ~ + KeyIndex + ~ + Signature(hex)
 	CompactPayloadSignatures  []string `json:"compact_payload_signatures"`
 	CompactEnvelopeSignatures []string `json:"compact_envelope_signatures"`
 	// ErrorMessage              string   `json:"error_message"`
@@ -102,13 +102,13 @@ func ExportExecutedTransactions(blockID flow.Identifier, dbPath string, outputPa
 
 				psig := make([]string, 0)
 				for _, s := range tx.PayloadSignatures {
-					cs := hex.EncodeToString(s.Address[:]) + "~" + fmt.Sprint(s.SignerIndex) + "~" + fmt.Sprint(s.KeyID) + "~" + hex.EncodeToString(s.Signature)
+					cs := hex.EncodeToString(s.Address[:]) + "~" + fmt.Sprint(s.SignerIndex) + "~" + fmt.Sprint(s.KeyIndex) + "~" + hex.EncodeToString(s.Signature)
 					psig = append(psig, cs)
 				}
 
 				esig := make([]string, 0)
 				for _, s := range tx.EnvelopeSignatures {
-					cs := hex.EncodeToString(s.Address[:]) + "~" + fmt.Sprint(s.SignerIndex) + "~" + fmt.Sprint(s.KeyID) + "~" + hex.EncodeToString(s.Signature)
+					cs := hex.EncodeToString(s.Address[:]) + "~" + fmt.Sprint(s.SignerIndex) + "~" + fmt.Sprint(s.KeyIndex) + "~" + hex.EncodeToString(s.Signature)
 					esig = append(esig, cs)
 				}
 
@@ -125,7 +125,7 @@ func ExportExecutedTransactions(blockID flow.Identifier, dbPath string, outputPa
 					GasLimit:                  tx.GasLimit,
 					PayerAddressHex:           hex.EncodeToString(tx.Payer[:]),
 					ProposalKeyAddressHex:     hex.EncodeToString(tx.ProposalKey.Address[:]),
-					ProposalKeyID:             tx.ProposalKey.KeyID,
+					ProposalKeyID:             tx.ProposalKey.KeyIndex,
 					ProposalSequenceNumber:    tx.ProposalKey.SequenceNumber,
 					AuthorizersAddressHex:     auths,
 					EnvelopeSize:              computeEnvelopeSize(tx),
diff --git a/engine/common/rpc/convert/convert.go b/engine/common/rpc/convert/convert.go
index 8eab9878a40..e3d28b6b821 100644
--- a/engine/common/rpc/convert/convert.go
+++ b/engine/common/rpc/convert/convert.go
@@ -74,7 +74,7 @@ func MessageToTransaction(m *entities.Transaction, chain flow.Chain) (flow.Trans
 func TransactionToMessage(tb flow.TransactionBody) *entities.Transaction {
 	proposalKeyMessage := &entities.Transaction_ProposalKey{
 		Address:        tb.ProposalKey.Address.Bytes(),
-		KeyId:          uint32(tb.ProposalKey.KeyID),
+		KeyId:          uint32(tb.ProposalKey.KeyIndex),
 		SequenceNumber: tb.ProposalKey.SequenceNumber,
 	}
 
@@ -88,7 +88,7 @@ func TransactionToMessage(tb flow.TransactionBody) *entities.Transaction {
 	for i, sig := range tb.PayloadSignatures {
 		payloadSigMessages[i] = &entities.Transaction_Signature{
 			Address:   sig.Address.Bytes(),
-			KeyId:     uint32(sig.KeyID),
+			KeyId:     uint32(sig.KeyIndex),
 			Signature: sig.Signature,
 		}
 	}
@@ -98,7 +98,7 @@ func TransactionToMessage(tb flow.TransactionBody) *entities.Transaction {
 	for i, sig := range tb.EnvelopeSignatures {
 		envelopeSigMessages[i] = &entities.Transaction_Signature{
 			Address:   sig.Address.Bytes(),
-			KeyId:     uint32(sig.KeyID),
+			KeyId:     uint32(sig.KeyIndex),
 			Signature: sig.Signature,
 		}
 	}
@@ -244,10 +244,10 @@ func MessageToAccount(m *entities.Account) (*flow.Account, error) {
 	}
 
 	return &flow.Account{
-		Address: flow.BytesToAddress(m.GetAddress()),
-		Balance: m.GetBalance(),
-		Code:    m.GetCode(),
-		Keys:    accountKeys,
+		Address:   flow.BytesToAddress(m.GetAddress()),
+		Balance:   m.GetBalance(),
+		Keys:      accountKeys,
+		Contracts: m.Contracts,
 	}, nil
 }
 
@@ -262,10 +262,11 @@ func AccountToMessage(a *flow.Account) (*entities.Account, error) {
 	}
 
 	return &entities.Account{
-		Address: a.Address.Bytes(),
-		Balance: a.Balance,
-		Code:    a.Code,
-		Keys:    keys,
+		Address:   a.Address.Bytes(),
+		Balance:   a.Balance,
+		Code:      nil,
+		Keys:      keys,
+		Contracts: a.Contracts,
 	}, nil
 }
 
diff --git a/engine/execution/state/bootstrap/bootstrap_test.go b/engine/execution/state/bootstrap/bootstrap_test.go
index 955268bee62..860456fc6e7 100644
--- a/engine/execution/state/bootstrap/bootstrap_test.go
+++ b/engine/execution/state/bootstrap/bootstrap_test.go
@@ -44,7 +44,7 @@ func TestBootstrapLedger(t *testing.T) {
 }
 
 func TestBootstrapLedger_ZeroTokenSupply(t *testing.T) {
-	var expectedStateCommitment, _ = hex.DecodeString("207ef54cec1605ff02a82d0382fe9a8851971007d2ef4a2e94426fd76cf8f133")
+	var expectedStateCommitment, _ = hex.DecodeString("49c03e8ca43c3925e8744f48a24d345d98f5b28fa6705c2e1b48d186f746b39c")
 
 	unittest.RunWithTempDir(t, func(dbDir string) {
 
diff --git a/engine/execution/testutil/fixtures.go b/engine/execution/testutil/fixtures.go
index fe484cca2a5..e429954f034 100644
--- a/engine/execution/testutil/fixtures.go
+++ b/engine/execution/testutil/fixtures.go
@@ -21,29 +21,29 @@ import (
 	"github.com/onflow/flow-go/utils/unittest"
 )
 
-func CreateContractDeploymentTransaction(contract string, authorizer flow.Address, chain flow.Chain) *flow.TransactionBody {
+func CreateContractDeploymentTransaction(contractName string, contract string, authorizer flow.Address, chain flow.Chain) *flow.TransactionBody {
 	encoded := hex.EncodeToString([]byte(contract))
 
 	return flow.NewTransactionBody().
 		SetScript([]byte(fmt.Sprintf(`transaction {
               prepare(signer: AuthAccount, service: AuthAccount) {
-                signer.setCode("%s".decodeHex())
+                signer.contracts.add(name: "%s", code: "%s".decodeHex())
               }
-            }`, encoded)),
+            }`, contractName, encoded)),
 		).
 		AddAuthorizer(authorizer).
 		AddAuthorizer(chain.ServiceAddress())
 }
 
-func CreateUnauthorizedContractDeploymentTransaction(contract string, authorizer flow.Address) *flow.TransactionBody {
+func CreateUnauthorizedContractDeploymentTransaction(contractName string, contract string, authorizer flow.Address) *flow.TransactionBody {
 	encoded := hex.EncodeToString([]byte(contract))
 
 	return flow.NewTransactionBody().
 		SetScript([]byte(fmt.Sprintf(`transaction {
               prepare(signer: AuthAccount) {
-                signer.setCode("%s".decodeHex())
+                signer.contracts.add(name: "%s", code: "%s".decodeHex())
               }
-            }`, encoded)),
+            }`, contractName, encoded)),
 		).
 		AddAuthorizer(authorizer)
 }
diff --git a/engine/execution/testutil/fixtures_counter.go b/engine/execution/testutil/fixtures_counter.go
index 96edd9cbdfe..b2c3acd68a8 100644
--- a/engine/execution/testutil/fixtures_counter.go
+++ b/engine/execution/testutil/fixtures_counter.go
@@ -25,11 +25,11 @@ access(all) contract Container {
 `
 
 func DeployCounterContractTransaction(authorizer flow.Address, chain flow.Chain) *flow.TransactionBody {
-	return CreateContractDeploymentTransaction(CounterContract, authorizer, chain)
+	return CreateContractDeploymentTransaction("Container", CounterContract, authorizer, chain)
 }
 
 func DeployUnauthorizedCounterContractTransaction(authorizer flow.Address) *flow.TransactionBody {
-	return CreateUnauthorizedContractDeploymentTransaction(CounterContract, authorizer)
+	return CreateUnauthorizedContractDeploymentTransaction("Container", CounterContract, authorizer)
 }
 
 func CreateCounterTransaction(counter, signer flow.Address) *flow.TransactionBody {
diff --git a/fvm/astCache_test.go b/fvm/astCache_test.go
index 2ccea2fb439..7a217e8bedc 100644
--- a/fvm/astCache_test.go
+++ b/fvm/astCache_test.go
@@ -416,7 +416,7 @@ func TestProgramASTCacheAvoidRaceCondition(t *testing.T) {
 	}
 	wg.Wait()
 
-	location := runtime.AddressLocation(fvm.FlowTokenAddress(chain).Bytes())
+	location := runtime.AddressContractLocation{AddressLocation: fvm.FlowTokenAddress(chain).Bytes(), Name: "FlowToken"}
 
 	// Get cached program
 	var program *ast.Program
diff --git a/fvm/bootstrap.go b/fvm/bootstrap.go
index ca5b3cf2f29..d794a7243a8 100644
--- a/fvm/bootstrap.go
+++ b/fvm/bootstrap.go
@@ -85,7 +85,7 @@ func (b *BootstrapProcedure) deployFungibleToken() flow.Address {
 
 	err := b.vm.invokeMetaTransaction(
 		b.ctx,
-		deployContractTransaction(fungibleToken, contracts.FungibleToken()),
+		deployContractTransaction(fungibleToken, contracts.FungibleToken(), "FungibleToken"),
 		b.ledger,
 	)
 	if err != nil {
@@ -141,7 +141,7 @@ func (b *BootstrapProcedure) deployServiceAccount(service, fungibleToken, flowTo
 
 	err := b.vm.invokeMetaTransaction(
 		b.ctx,
-		deployContractTransaction(service, contract),
+		deployContractTransaction(service, contract, "FlowServiceAccount"),
 		b.ledger,
 	)
 	if err != nil {
@@ -166,7 +166,7 @@ func (b *BootstrapProcedure) mintInitialTokens(
 const deployContractTransactionTemplate = `
 transaction {
   prepare(signer: AuthAccount) {
-    signer.setCode("%s".decodeHex())
+    signer.contracts.add(name: "%s", code: "%s".decodeHex())
   }
 }
 `
@@ -175,7 +175,7 @@ const deployFlowTokenTransactionTemplate = `
 transaction {
   prepare(flowTokenAccount: AuthAccount, serviceAccount: AuthAccount) {
     let adminAccount = serviceAccount
-    flowTokenAccount.setCode("%s".decodeHex(), adminAccount)
+    flowTokenAccount.contracts.add(name: "FlowToken", code: "%s".decodeHex(), adminAccount: adminAccount)
   }
 }
 `
@@ -184,7 +184,7 @@ const deployFlowFeesTransactionTemplate = `
 transaction {
   prepare(flowFeesAccount: AuthAccount, serviceAccount: AuthAccount) {
     let adminAccount = serviceAccount
-    flowFeesAccount.setCode("%s".decodeHex(), adminAccount)
+    flowFeesAccount.contracts.add(name: "FlowFees", code: "%s".decodeHex(), adminAccount: adminAccount)
   }
 }
 `
@@ -220,10 +220,10 @@ transaction(amount: UFix64) {
 }
 `
 
-func deployContractTransaction(address flow.Address, contract []byte) *TransactionProcedure {
+func deployContractTransaction(address flow.Address, contract []byte, contractName string) *TransactionProcedure {
 	return Transaction(
 		flow.NewTransactionBody().
-			SetScript([]byte(fmt.Sprintf(deployContractTransactionTemplate, hex.EncodeToString(contract)))).
+			SetScript([]byte(fmt.Sprintf(deployContractTransactionTemplate, contractName, hex.EncodeToString(contract)))).
 			AddAuthorizer(address),
 	)
 }
diff --git a/fvm/env.go b/fvm/env.go
index f8ee8e9ee8c..2213f543e93 100644
--- a/fvm/env.go
+++ b/fvm/env.go
@@ -15,6 +15,8 @@ import (
 	"github.com/onflow/flow-go/fvm/state"
 	"github.com/onflow/flow-go/model/flow"
 	"github.com/onflow/flow-go/storage"
+
+	"github.com/onflow/flow-go-sdk/crypto"
 )
 
 var _ runtime.Interface = &hostEnv{}
@@ -35,6 +37,14 @@ type hostEnv struct {
 	rng            *rand.Rand
 }
 
+func (e *hostEnv) Hash(data []byte, hashAlgorithm string) []byte {
+	hasher, err := crypto.NewHasher(crypto.StringToHashAlgorithm(hashAlgorithm))
+	if err != nil {
+		panic(fmt.Errorf("cannot create hasher: %w", err))
+	}
+	return hasher.ComputeHash(data)
+}
+
 func newEnvironment(ctx Context, ledger state.Ledger) *hostEnv {
 	accounts := state.NewAccounts(ledger, ctx.Chain)
 
@@ -115,25 +125,83 @@ func (e *hostEnv) ValueExists(owner, key []byte) (exists bool, err error) {
 	return len(v) > 0, nil
 }
 
-func (e *hostEnv) ResolveImport(location runtime.Location) ([]byte, error) {
-	addressLocation, ok := location.(runtime.AddressLocation)
+func (e *hostEnv) ResolveLocation(
+	identifiers []runtime.Identifier,
+	location runtime.Location,
+) []runtime.ResolvedLocation {
+
+	addressLocation, isAddress := location.(runtime.AddressLocation)
+
+	// if the location is not an address location, e.g. an identifier location (`import Crypto`),
+	// then return a single resolved location which declares all identifiers.
+
+	if !isAddress {
+		return []runtime.ResolvedLocation{
+			{
+				Location:    location,
+				Identifiers: identifiers,
+			},
+		}
+	}
+
+	// if the location is an address,
+	// and no specific identifiers where requested in the import statement,
+	// then fetch all identifiers at this address
+
+	if len(identifiers) == 0 {
+		address := flow.Address(addressLocation.ToAddress())
+		contractNames, err := e.accounts.GetContractNames(address)
+		if err != nil {
+			panic(err)
+		}
+
+		// if there are no contractNames deployed,
+		// then return no resolved locations
+
+		if len(contractNames) == 0 {
+			return nil
+		}
+
+		identifiers = make([]ast.Identifier, len(contractNames))
+
+		for i := range identifiers {
+			identifiers[i] = runtime.Identifier{
+				Identifier: contractNames[i],
+			}
+		}
+	}
+
+	// return one resolved location per identifier.
+	// each resolved location is an address contract location
+
+	resolvedLocations := make([]runtime.ResolvedLocation, len(identifiers))
+	for i := range resolvedLocations {
+		identifier := identifiers[i]
+		resolvedLocations[i] = runtime.ResolvedLocation{
+			Location: runtime.AddressContractLocation{
+				AddressLocation: addressLocation,
+				Name:            identifier.Identifier,
+			},
+			Identifiers: []runtime.Identifier{identifier},
+		}
+	}
+
+	return resolvedLocations
+}
+
+func (e *hostEnv) GetCode(location runtime.Location) ([]byte, error) {
+	contractLocation, ok := location.(runtime.AddressContractLocation)
 	if !ok {
-		return nil, nil
+		return nil, fmt.Errorf("can only get code for an account contract (an AddressContractLocation)")
 	}
 
-	address := flow.BytesToAddress(addressLocation)
+	address := flow.Address(contractLocation.AddressLocation.ToAddress())
 
-	code, err := e.accounts.GetCode(address)
+	code, err := e.accounts.GetContract(contractLocation.Name, address)
 	if err != nil {
-		// TODO: improve error passing https://github.com/onflow/cadence/issues/202
 		return nil, err
 	}
 
-	if code == nil {
-		// TODO: improve error passing https://github.com/onflow/cadence/issues/202
-		return nil, fmt.Errorf("no code deployed at address %s", address)
-	}
-
 	return code, nil
 }
 
@@ -146,9 +214,8 @@ func (e *hostEnv) GetCachedProgram(location ast.Location) (*ast.Program, error)
 	if program != nil {
 		// Program was found within cache, do an explicit ledger register touch
 		// to ensure consistent reads during chunk verification.
-		if addressLocation, ok := location.(runtime.AddressLocation); ok {
-			address := flow.BytesToAddress(addressLocation)
-			e.accounts.TouchCode(address)
+		if addressLocation, ok := location.(runtime.AddressContractLocation); ok {
+			e.accounts.TouchContract(addressLocation.Name, flow.BytesToAddress(addressLocation.AddressLocation))
 		}
 	}
 
@@ -321,13 +388,53 @@ func (e *hostEnv) RemoveAccountKey(address runtime.Address, index int) (publicKe
 	return e.transactionEnv.RemoveAccountKey(address, index)
 }
 
-func (e *hostEnv) UpdateAccountCode(address runtime.Address, code []byte) (err error) {
+func (e *hostEnv) UpdateAccountContractCode(address runtime.Address, name string, code []byte) (err error) {
 	if e.transactionEnv == nil {
-		panic("UpdateAccountCode is not supported by this environment")
+		panic("UpdateAccountContractCode is not supported by this environment")
 	}
 
 	// TODO: improve error passing https://github.com/onflow/cadence/issues/202
-	return e.transactionEnv.UpdateAccountCode(address, code)
+	return e.transactionEnv.UpdateAccountContractCode(address, name, code)
+}
+
+func (e *hostEnv) GetAccountContractCode(address runtime.Address, name string) (code []byte, err error) {
+	return e.GetCode(runtime.AddressContractLocation{
+		AddressLocation: address.Bytes(),
+		Name:            name,
+	})
+}
+
+func (e *hostEnv) RemoveAccountContractCode(address runtime.Address, name string) (err error) {
+	if e.transactionEnv == nil {
+		panic("RemoveAccountContractCode is not supported by this environment")
+	}
+
+	// TODO: improve error passing https://github.com/onflow/cadence/issues/202
+	return e.transactionEnv.RemoveAccountContractCode(address, name)
+}
+
+func (e *transactionEnv) UpdateAccountContractCode(address runtime.Address, name string, code []byte) (err error) {
+	accountAddress := flow.Address(address)
+
+	// must be signed by the service account
+	if e.ctx.RestrictedDeploymentEnabled && !e.isAuthorizer(runtime.Address(e.ctx.Chain.ServiceAddress())) {
+		// TODO: improve error passing https://github.com/onflow/cadence/issues/202
+		return fmt.Errorf("code deployment requires authorization from the service account")
+	}
+
+	return e.accounts.SetContract(name, accountAddress, code)
+}
+
+func (e *transactionEnv) RemoveAccountContractCode(address runtime.Address, name string) (err error) {
+	accountAddress := flow.Address(address)
+
+	// must be signed by the service account
+	if e.ctx.RestrictedDeploymentEnabled && !e.isAuthorizer(runtime.Address(e.ctx.Chain.ServiceAddress())) {
+		// TODO: improve error passing https://github.com/onflow/cadence/issues/202
+		return fmt.Errorf("code deployment requires authorization from the service account")
+	}
+
+	return e.accounts.DeleteContract(name, accountAddress)
 }
 
 func (e *hostEnv) GetSigningAccounts() []runtime.Address {
@@ -499,29 +606,11 @@ func (e *transactionEnv) RemoveAccountKey(address runtime.Address, keyIndex int)
 	return encodedPublicKey, nil
 }
 
-// UpdateAccountCode updates the deployed code on an existing account.
-//
-// This function returns an error if the specified account does not exist or is
-// not a valid signing account.
-func (e *transactionEnv) UpdateAccountCode(address runtime.Address, code []byte) (err error) {
-	accountAddress := flow.Address(address)
-
-	// currently, every transaction that sets account code (deploys/updates contracts)
-	// must be signed by the service account
-	if e.ctx.RestrictedDeploymentEnabled && !e.isAuthorizer(runtime.Address(e.ctx.Chain.ServiceAddress())) {
-		// TODO: improve error passing https://github.com/onflow/cadence/issues/202
-		return fmt.Errorf("code deployment requires authorization from the service account")
-	}
-
-	return e.accounts.SetCode(accountAddress, code)
-}
-
 func (e *transactionEnv) isAuthorizer(address runtime.Address) bool {
 	for _, accountAddress := range e.GetSigningAccounts() {
 		if accountAddress == address {
 			return true
 		}
 	}
-
 	return false
 }
diff --git a/fvm/fvm_test.go b/fvm/fvm_test.go
index cc6dd74fc13..4c27ea9a239 100644
--- a/fvm/fvm_test.go
+++ b/fvm/fvm_test.go
@@ -251,6 +251,35 @@ func TestBlockContext_DeployContract(t *testing.T) {
 		assert.Equal(t, expectedErr, tx.Err.Error())
 		assert.Equal(t, (&fvm.ExecutionError{}).Code(), tx.Err.Code())
 	})
+
+	t.Run("account update with set code fails if not signed by service account", func(t *testing.T) {
+		ledger := testutil.RootBootstrappedLedger(vm, ctx)
+
+		// Create an account private key.
+		privateKeys, err := testutil.GenerateAccountPrivateKeys(1)
+		require.NoError(t, err)
+
+		// Bootstrap a ledger, creating accounts with the provided private keys and the root account.
+		accounts, err := testutil.CreateAccounts(vm, ledger, privateKeys, chain)
+		require.NoError(t, err)
+
+		txBody := testutil.DeployUnauthorizedCounterContractTransaction(accounts[0])
+
+		err = testutil.SignTransaction(txBody, accounts[0], privateKeys[0], 0)
+		require.NoError(t, err)
+
+		tx := fvm.Transaction(txBody)
+
+		err = vm.Run(ctx, tx, ledger)
+		require.NoError(t, err)
+
+		assert.Error(t, tx.Err)
+
+		expectedErr := "Execution failed:\ncode deployment requires authorization from the service account\n"
+
+		assert.Equal(t, expectedErr, tx.Err.Error())
+		assert.Equal(t, (&fvm.ExecutionError{}).Code(), tx.Err.Code())
+	})
 }
 
 func TestBlockContext_ExecuteTransaction_WithArguments(t *testing.T) {
diff --git a/fvm/state/accounts.go b/fvm/state/accounts.go
index f6d8145a325..9cc599d6ca6 100644
--- a/fvm/state/accounts.go
+++ b/fvm/state/accounts.go
@@ -5,6 +5,9 @@ import (
 	"errors"
 	"fmt"
 	"math/big"
+	"sort"
+
+	"github.com/fxamacker/cbor/v2"
 
 	"github.com/onflow/flow-go/model/flow"
 )
@@ -12,6 +15,7 @@ import (
 const (
 	keyExists         = "exists"
 	keyCode           = "code"
+	keyContractNames  = "contract_names"
 	keyPublicKeyCount = "public_key_count"
 )
 
@@ -50,12 +54,19 @@ func (a *Accounts) Get(address flow.Address) (*flow.Account, error) {
 	if !ok {
 		return nil, ErrAccountNotFound
 	}
+	contracts := make(map[string][]byte)
+	contractNames, err := a.getContractNames(address)
 
-	var code []byte
-	code, err = a.GetCode(address)
 	if err != nil {
 		return nil, err
 	}
+	for _, name := range contractNames {
+		contract, err := a.getContract(name, address)
+		if err != nil {
+			return nil, err
+		}
+		contracts[name] = contract
+	}
 
 	var publicKeys []flow.AccountPublicKey
 	publicKeys, err = a.GetPublicKeys(address)
@@ -64,9 +75,9 @@ func (a *Accounts) Get(address flow.Address) (*flow.Account, error) {
 	}
 
 	return &flow.Account{
-		Address: address,
-		Code:    code,
-		Keys:    publicKeys,
+		Address:   address,
+		Keys:      publicKeys,
+		Contracts: contracts,
 	}, nil
 }
 
@@ -99,8 +110,6 @@ func (a *Accounts) Create(publicKeys []flow.AccountPublicKey) (flow.Address, err
 	// mark that this account exists
 	a.ledger.Set(string(newAddress.Bytes()), "", keyExists, []byte{1})
 
-	a.ledger.Set(string(newAddress.Bytes()), string(newAddress.Bytes()), keyCode, nil)
-
 	err = a.SetAllPublicKeys(newAddress, publicKeys)
 	if err != nil {
 		return flow.EmptyAddress, err
@@ -257,26 +266,52 @@ func (a *Accounts) AppendPublicKey(address flow.Address, publicKey flow.AccountP
 	return nil
 }
 
-func (a *Accounts) GetCode(address flow.Address) ([]byte, error) {
+func contractKey(contractName string) string {
+	return fmt.Sprintf("%s.%s", keyCode, contractName)
+}
 
-	code, err := a.ledger.Get(string(address.Bytes()),
+func (a *Accounts) getContract(contractName string, address flow.Address) ([]byte, error) {
+	contract, err := a.ledger.Get(string(address.Bytes()),
 		string(address.Bytes()),
-		keyCode)
+		contractKey(contractName))
 	if err != nil {
-		return nil, newLedgerGetError(keyCode, address, err)
+		return nil, newLedgerGetError(contractName, address, err)
 	}
 
-	return code, nil
+	return contract, nil
 }
 
-func (a *Accounts) TouchCode(address flow.Address) {
+func (a *Accounts) setContract(contractName string, address flow.Address, contract []byte) error {
+	ok, err := a.Exists(address)
+	if err != nil {
+		return err
+	}
 
-	a.ledger.Touch(string(address.Bytes()),
-		string(address.Bytes()),
-		keyCode)
+	if !ok {
+		return fmt.Errorf("account with address %s does not exist", address)
+	}
+
+	var prevContract []byte
+	prevContract, err = a.ledger.Get(string(address.Bytes()), string(address.Bytes()), contractKey(contractName))
+	if err != nil {
+		return fmt.Errorf("cannot retreive previous contract: %w", err)
+	}
+
+	// skip updating if the new contract equals the old
+	if bytes.Equal(prevContract, contract) {
+		return nil
+	}
+
+	a.ledger.Set(string(address.Bytes()), string(address.Bytes()), contractKey(contractName), contract)
+
+	return nil
 }
 
-func (a *Accounts) SetCode(address flow.Address, code []byte) error {
+func newLedgerGetError(key string, address flow.Address, err error) error {
+	return fmt.Errorf("failed to read key %s on account %s: %w", key, address, err)
+}
+
+func (a *Accounts) setContractNames(contractNames contractNames, address flow.Address) error {
 	ok, err := a.Exists(address)
 	if err != nil {
 		return err
@@ -285,23 +320,127 @@ func (a *Accounts) SetCode(address flow.Address, code []byte) error {
 	if !ok {
 		return fmt.Errorf("account with address %s does not exist", address)
 	}
+	var buf bytes.Buffer
+	cborEncoder := cbor.NewEncoder(&buf)
+	err = cborEncoder.Encode(contractNames)
+	if err != nil {
+		return fmt.Errorf("cannot encode contract names")
+	}
+	newContractNames := buf.Bytes()
 
-	var prevCode []byte
-	prevCode, err = a.ledger.Get(string(address.Bytes()), string(address.Bytes()), keyCode)
+	var prevContractNames []byte
+	prevContractNames, err = a.ledger.Get(string(address.Bytes()), string(address.Bytes()), keyContractNames)
 	if err != nil {
-		return fmt.Errorf("cannot retreive previous code: %w", err)
+		return fmt.Errorf("cannot retrieve current contract names: %w", err)
 	}
 
-	// skip updating if the new code equals the old
-	if bytes.Equal(prevCode, code) {
+	// skip updating if the new contract names equal the old
+	if bytes.Equal(prevContractNames, newContractNames) {
 		return nil
 	}
 
-	a.ledger.Set(string(address.Bytes()), string(address.Bytes()), keyCode, code)
+	a.ledger.Set(string(address.Bytes()), string(address.Bytes()), keyContractNames, newContractNames)
 
 	return nil
 }
 
-func newLedgerGetError(key string, address flow.Address, err error) error {
-	return fmt.Errorf("failed to read key %s on account %s: %w", key, address, err)
+func (a *Accounts) TouchContract(contractName string, address flow.Address) {
+	contractNames, err := a.getContractNames(address)
+	if err != nil {
+		panic(err)
+	}
+	if contractNames.Has(contractName) {
+		a.ledger.Touch(string(address.Bytes()),
+			string(address.Bytes()),
+			contractKey(contractName))
+	}
+}
+
+// GetContractNames gets a sorted list of names of contracts deployed on an address
+func (a *Accounts) GetContractNames(address flow.Address) ([]string, error) {
+	return a.getContractNames(address)
+}
+
+func (a *Accounts) getContractNames(address flow.Address) (contractNames, error) {
+	encContractNames, err := a.ledger.Get(string(address.Bytes()), string(address.Bytes()), keyContractNames)
+	if err != nil {
+		return nil, fmt.Errorf("cannot get deployed contract names: %w", err)
+	}
+	identifiers := make([]string, 0)
+	if len(encContractNames) > 0 {
+		buf := bytes.NewReader(encContractNames)
+		cborDecoder := cbor.NewDecoder(buf)
+		err = cborDecoder.Decode(&identifiers)
+		if err != nil {
+			return nil, fmt.Errorf("cannot decode deployed contract names %x: %w", encContractNames, err)
+		}
+	}
+	return identifiers, nil
+}
+
+func (a *Accounts) GetContract(contractName string, address flow.Address) ([]byte, error) {
+	contractNames, err := a.getContractNames(address)
+	if err != nil {
+		return nil, err
+	}
+	if !contractNames.Has(contractName) {
+		return nil, nil
+	}
+	return a.getContract(contractName, address)
+}
+
+func (a *Accounts) SetContract(contractName string, address flow.Address, contract []byte) error {
+	contractNames, err := a.getContractNames(address)
+	if err != nil {
+		return err
+	}
+	err = a.setContract(contractName, address, contract)
+	if err != nil {
+		return err
+	}
+	contractNames.add(contractName)
+	return a.setContractNames(contractNames, address)
+}
+
+func (a *Accounts) DeleteContract(contractName string, address flow.Address) error {
+	contractNames, err := a.getContractNames(address)
+	if err != nil {
+		return err
+	}
+	if !contractNames.Has(contractName) {
+		return nil
+	}
+	err = a.setContract(contractName, address, nil)
+	if err != nil {
+		return err
+	}
+	contractNames.remove(contractName)
+	return a.setContractNames(contractNames, address)
+}
+
+// contractNames container for a list of contract names. Should always be sorted.
+// To ensure this, don't sort while reading it from storage, but sort it while adding/removing elements
+type contractNames []string
+
+func (l contractNames) Has(contractNames string) bool {
+	i := sort.SearchStrings(l, contractNames)
+	return i != len(l) && l[i] == contractNames
+}
+func (l *contractNames) add(contractNames string) {
+	i := sort.SearchStrings(*l, contractNames)
+	if i != len(*l) && (*l)[i] == contractNames {
+		// list already contains element
+		return
+	}
+	*l = append(*l, "")
+	copy((*l)[i+1:], (*l)[i:])
+	(*l)[i] = contractNames
+}
+func (l *contractNames) remove(contractName string) {
+	i := sort.SearchStrings(*l, contractName)
+	if i == len(*l) || (*l)[i] != contractName {
+		// list doesnt contain the element
+		return
+	}
+	*l = append((*l)[:i], (*l)[i+1:]...)
 }
diff --git a/fvm/state/accounts_test.go b/fvm/state/accounts_test.go
index 2bcaaf803e0..b4c94d39b40 100644
--- a/fvm/state/accounts_test.go
+++ b/fvm/state/accounts_test.go
@@ -45,3 +45,103 @@ func TestAccounts_GetWithNoKeysCounter(t *testing.T) {
 		_, _ = accounts.Get(address)
 	})
 }
+
+type TestLedger struct {
+	contracts []byte
+}
+
+func (l *TestLedger) Set(_, _, key string, value flow.RegisterValue) {
+	if key == "contract_names" {
+		l.contracts = value
+	}
+}
+func (l *TestLedger) Get(_, _, key string) (flow.RegisterValue, error) {
+	if key == "exists" {
+		return []byte("1"), nil
+	}
+	if key == "contract_names" {
+		return l.contracts, nil
+	}
+	return nil, nil
+}
+func (l *TestLedger) Touch(_, _, _ string)  {}
+func (l *TestLedger) Delete(_, _, _ string) {}
+
+func TestAccounts_SetContracts(t *testing.T) {
+
+	chain := struct{ flow.Chain }{}
+	address := flow.HexToAddress("0x01")
+
+	t.Run("Setting a contract puts it in Contracts", func(t *testing.T) {
+		ledger := TestLedger{}
+		a := state.NewAccounts(&ledger, chain)
+
+		err := a.SetContract("Dummy", address, []byte("non empty string"))
+		require.NoError(t, err)
+
+		contractNames, err := a.GetContractNames(address)
+		require.NoError(t, err)
+
+		require.Len(t, contractNames, 1, "There should only be one contract")
+		require.Equal(t, contractNames[0], "Dummy")
+	})
+	t.Run("Setting a contract again, does not add it to contracts", func(t *testing.T) {
+		ledger := TestLedger{}
+		a := state.NewAccounts(&ledger, chain)
+
+		err := a.SetContract("Dummy", address, []byte("non empty string"))
+		require.NoError(t, err)
+
+		err = a.SetContract("Dummy", address, []byte("non empty string"))
+		require.NoError(t, err)
+
+		contractNames, err := a.GetContractNames(address)
+		require.NoError(t, err)
+
+		require.Len(t, contractNames, 1, "There should only be one contract")
+		require.Equal(t, contractNames[0], "Dummy")
+	})
+	t.Run("Setting more contracts always keeps them sorted", func(t *testing.T) {
+		ledger := TestLedger{}
+		a := state.NewAccounts(&ledger, chain)
+
+		err := a.SetContract("Dummy", address, []byte("non empty string"))
+		require.NoError(t, err)
+
+		err = a.SetContract("ZedDummy", address, []byte("non empty string"))
+		require.NoError(t, err)
+
+		err = a.SetContract("ADummy", address, []byte("non empty string"))
+		require.NoError(t, err)
+
+		contractNames, err := a.GetContractNames(address)
+		require.NoError(t, err)
+
+		require.Len(t, contractNames, 3)
+		require.Equal(t, contractNames[0], "ADummy")
+		require.Equal(t, contractNames[1], "Dummy")
+		require.Equal(t, contractNames[2], "ZedDummy")
+	})
+	t.Run("Removing a contract does not fail if there is none", func(t *testing.T) {
+		ledger := TestLedger{}
+		a := state.NewAccounts(&ledger, chain)
+
+		err := a.DeleteContract("Dummy", address)
+		require.NoError(t, err)
+	})
+	t.Run("Removing a contract removes it", func(t *testing.T) {
+		ledger := TestLedger{}
+		a := state.NewAccounts(&ledger, chain)
+
+		err := a.SetContract("Dummy", address, []byte("non empty string"))
+		require.NoError(t, err)
+
+		err = a.DeleteContract("Dummy", address)
+		require.NoError(t, err)
+
+		contractNames, err := a.GetContractNames(address)
+		require.NoError(t, err)
+
+		require.Len(t, contractNames, 0, "There should be no contract")
+	})
+}
diff --git a/fvm/transactionSequenceNum.go b/fvm/transactionSequenceNum.go
index bbc3df80d57..f10b010e9a7 100644
--- a/fvm/transactionSequenceNum.go
+++ b/fvm/transactionSequenceNum.go
@@ -30,12 +30,12 @@ func (c *TransactionSequenceNumberChecker) checkAndIncrementSequenceNumber(
 ) error {
 	proposalKey := tx.ProposalKey
 
-	accountKey, err := accounts.GetPublicKey(proposalKey.Address, proposalKey.KeyID)
+	accountKey, err := accounts.GetPublicKey(proposalKey.Address, proposalKey.KeyIndex)
 	if err != nil {
 		if errors.Is(err, state.ErrAccountPublicKeyNotFound) {
 			return &InvalidProposalKeyPublicKeyDoesNotExistError{
 				Address:  proposalKey.Address,
-				KeyIndex: proposalKey.KeyID,
+				KeyIndex: proposalKey.KeyIndex,
 			}
 		}
 
@@ -45,7 +45,7 @@ func (c *TransactionSequenceNumberChecker) checkAndIncrementSequenceNumber(
 	if accountKey.Revoked {
 		return &InvalidProposalKeyPublicKeyRevokedError{
 			Address:  proposalKey.Address,
-			KeyIndex: proposalKey.KeyID,
+			KeyIndex: proposalKey.KeyIndex,
 		}
 	}
 
@@ -54,7 +54,7 @@ func (c *TransactionSequenceNumberChecker) checkAndIncrementSequenceNumber(
 	if !valid {
 		return &InvalidProposalKeySequenceNumberError{
 			Address:           proposalKey.Address,
-			KeyIndex:          proposalKey.KeyID,
+			KeyIndex:          proposalKey.KeyIndex,
 			CurrentSeqNumber:  accountKey.SeqNumber,
 			ProvidedSeqNumber: proposalKey.SequenceNumber,
 		}
@@ -62,7 +62,7 @@ func (c *TransactionSequenceNumberChecker) checkAndIncrementSequenceNumber(
 
 	accountKey.SeqNumber++
 
-	_, err = accounts.SetPublicKey(proposalKey.Address, proposalKey.KeyID, accountKey)
+	_, err = accounts.SetPublicKey(proposalKey.Address, proposalKey.KeyIndex, accountKey)
 	if err != nil {
 		return err
 	}
diff --git a/fvm/transactionVerifier.go b/fvm/transactionVerifier.go
index b7f25876714..f1b27c3ae60 100644
--- a/fvm/transactionVerifier.go
+++ b/fvm/transactionVerifier.go
@@ -69,7 +69,7 @@ func (v *TransactionSignatureVerifier) verifyTransactionSignatures(
 	if !proposalKeyVerified {
 		return &InvalidProposalKeyMissingSignatureError{
 			Address:  tx.ProposalKey.Address,
-			KeyIndex: tx.ProposalKey.KeyID,
+			KeyIndex: tx.ProposalKey.KeyIndex,
 		}
 	}
 
@@ -133,12 +133,12 @@ func (v *TransactionSignatureVerifier) verifyAccountSignature(
 	txSig flow.TransactionSignature,
 	message []byte,
 ) (*flow.AccountPublicKey, error) {
-	accountKey, err := accounts.GetPublicKey(txSig.Address, txSig.KeyID)
+	accountKey, err := accounts.GetPublicKey(txSig.Address, txSig.KeyIndex)
 	if err != nil {
 		if errors.Is(err, state.ErrAccountPublicKeyNotFound) {
 			return nil, &InvalidSignaturePublicKeyDoesNotExistError{
 				Address:  txSig.Address,
-				KeyIndex: txSig.KeyID,
+				KeyIndex: txSig.KeyIndex,
 			}
 		}
 
@@ -148,7 +148,7 @@ func (v *TransactionSignatureVerifier) verifyAccountSignature(
 	if accountKey.Revoked {
 		return nil, &InvalidSignaturePublicKeyRevokedError{
 			Address:  txSig.Address,
-			KeyIndex: txSig.KeyID,
+			KeyIndex: txSig.KeyIndex,
 		}
 	}
 
@@ -163,7 +163,7 @@ func (v *TransactionSignatureVerifier) verifyAccountSignature(
 		if errors.Is(err, ErrInvalidHashAlgorithm) {
 			return nil, &InvalidHashAlgorithmError{
 				Address:  txSig.Address,
-				KeyIndex: txSig.KeyID,
+				KeyIndex: txSig.KeyIndex,
 				HashAlgo: accountKey.HashAlgo,
 			}
 		}
@@ -174,7 +174,7 @@ func (v *TransactionSignatureVerifier) verifyAccountSignature(
 	if !valid {
 		return nil, &InvalidSignatureVerificationError{
 			Address:  txSig.Address,
-			KeyIndex: txSig.KeyID,
+			KeyIndex: txSig.KeyIndex,
 		}
 	}
 
@@ -192,5 +192,5 @@ func (v *TransactionSignatureVerifier) sigIsForProposalKey(
 	txSig flow.TransactionSignature,
 	proposalKey flow.ProposalKey,
 ) bool {
-	return txSig.Address == proposalKey.Address && txSig.KeyID == proposalKey.KeyID
+	return txSig.Address == proposalKey.Address && txSig.KeyIndex == proposalKey.KeyIndex
 }
diff --git a/go.mod b/go.mod
index 9785d883c0b..9f17eba3205 100644
--- a/go.mod
+++ b/go.mod
@@ -3,18 +3,19 @@ module github.com/onflow/flow-go
 go 1.13
 
 require (
-	cloud.google.com/go/storage v1.6.0
+	cloud.google.com/go/storage v1.10.0
 	github.com/HdrHistogram/hdrhistogram-go v0.9.0 // indirect
 	github.com/btcsuite/btcd v0.20.1-beta
 	github.com/codahale/hdrhistogram v0.9.0 // indirect
 	github.com/desertbit/timer v0.0.0-20180107155436-c41aec40b27f // indirect
 	github.com/dgraph-io/badger/v2 v2.0.3
 	github.com/ethereum/go-ethereum v1.9.13
+	github.com/fxamacker/cbor/v2 v2.2.0
 	github.com/go-kit/kit v0.9.0
 	github.com/gogo/protobuf v1.3.1
-	github.com/golang/mock v1.4.3
-	github.com/golang/protobuf v1.4.0
-	github.com/google/go-cmp v0.4.0
+	github.com/golang/mock v1.4.4
+	github.com/golang/protobuf v1.4.2
+	github.com/google/go-cmp v0.5.2
 	github.com/google/uuid v1.1.1
 	github.com/hashicorp/go-multierror v1.0.0
 	github.com/hashicorp/golang-lru v0.5.4
@@ -29,11 +30,11 @@ require (
 	github.com/libp2p/go-libp2p-transport-upgrader v0.3.0
 	github.com/libp2p/go-tcp-transport v0.2.1
 	github.com/multiformats/go-multiaddr v0.3.1
-	github.com/onflow/cadence v0.9.2
-	github.com/onflow/flow-core-contracts/lib/go/contracts v0.1.0
-	github.com/onflow/flow-go-sdk v0.8.0
+	github.com/onflow/cadence v0.10.0
+	github.com/onflow/flow-core-contracts/lib/go/contracts v0.1.1-0.20201002123512-35d751ebea1d
+	github.com/onflow/flow-go-sdk v0.11.1-0.20201006202132-809a7df549e7
 	github.com/onflow/flow-go/crypto v0.9.4
-	github.com/onflow/flow/protobuf/go/flow v0.1.7
+	github.com/onflow/flow/protobuf/go/flow v0.1.8
 	github.com/opentracing/opentracing-go v1.2.0
 	github.com/pkg/errors v0.9.1
 	github.com/prometheus/client_golang v1.5.1
@@ -49,15 +50,20 @@ require (
 	github.com/vmihailenco/msgpack v4.0.4+incompatible
 	github.com/vmihailenco/msgpack/v4 v4.3.11
 	go.uber.org/atomic v1.6.0
-	golang.org/x/crypto v0.0.0-20200510223506-06a226fb4e37
+	golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9
 	golang.org/x/exp v0.0.0-20200224162631-6cc2880d07d6
-	google.golang.org/api v0.18.0
-	google.golang.org/grpc v1.28.0
+	google.golang.org/api v0.31.0
+	google.golang.org/grpc v1.31.1
 	gotest.tools v2.2.0+incompatible
 )
 
 replace mellium.im/sasl => github.com/mellium/sasl v0.2.1
 
+// temp fix for MacOS build. See comment https://github.com/ory/dockertest/issues/208#issuecomment-686820414
+replace golang.org/x/sys => golang.org/x/sys v0.0.0-20200826173525-f9321e4c35a6
+
+replace github.com/fxamacker/cbor/v2 => github.com/turbolent/cbor/v2 v2.2.1-0.20200911003300-cac23af49154
+
 replace github.com/onflow/flow-go => ./
 
 replace github.com/onflow/flow-go/crypto => ./crypto
diff --git a/go.sum b/go.sum
index 1449577ace7..de44522f444 100644
--- a/go.sum
+++ b/go.sum
@@ -10,10 +10,19 @@ cloud.google.com/go v0.50.0/go.mod h1:r9sluTvynVuxRIOHXQEHMFffphuXHOMZMycpNR5e6T
 cloud.google.com/go v0.52.0/go.mod h1:pXajvRH/6o3+F9jDHZWQ5PbGhn+o8w9qiu/CffaVdO4=
 cloud.google.com/go v0.53.0 h1:MZQCQQaRwOrAcuKjiHWHrgKykt4fZyuwF2dtiG3fGW8=
 cloud.google.com/go v0.53.0/go.mod h1:fp/UouUEsRkN6ryDKNW/Upv/JBKnv6WDthjR6+vze6M=
+cloud.google.com/go v0.54.0/go.mod h1:1rq2OEkV3YMf6n/9ZvGWI3GWw0VoqH/1x2nd8Is/bPc=
+cloud.google.com/go v0.56.0/go.mod h1:jr7tqZxxKOVYizybht9+26Z/gUq7tiRzu+ACVAMbKVk=
+cloud.google.com/go v0.57.0/go.mod h1:oXiQ6Rzq3RAkkY7N6t3TcE6jE+CIBBbA36lwQ1JyzZs=
+cloud.google.com/go v0.62.0/go.mod h1:jmCYTdRCQuc1PHIIJ/maLInMho30T/Y0M4hTdTShOYc=
+cloud.google.com/go v0.65.0 h1:Dg9iHVQfrhq82rUNu9ZxUDrJLaxFUe/HlCVaLyRruq8=
+cloud.google.com/go v0.65.0/go.mod h1:O5N8zS7uWy9vkA9vayVHs65eM1ubvY4h553ofrNHObY=
 cloud.google.com/go/bigquery v1.0.1/go.mod h1:i/xbL2UlR5RvWAURpBYZTtm/cXjCha9lbfbpx4poX+o=
 cloud.google.com/go/bigquery v1.3.0/go.mod h1:PjpwJnslEMmckchkHFfq+HTD2DmtT67aNFKH1/VBDHE=
 cloud.google.com/go/bigquery v1.4.0 h1:xE3CPsOgttP4ACBePh79zTKALtXwn/Edhcr16R5hMWU=
 cloud.google.com/go/bigquery v1.4.0/go.mod h1:S8dzgnTigyfTmLBfrtrhyYhwRxG72rYxvftPBK2Dvzc=
+cloud.google.com/go/bigquery v1.5.0/go.mod h1:snEHRnqQbz117VIFhE8bmtwIDY80NLUZUMb4Nv6dBIg=
+cloud.google.com/go/bigquery v1.7.0/go.mod h1://okPTzCYNXSlb24MZs83e2Do+h+VXtc4gLoIoXIAPc=
+cloud.google.com/go/bigquery v1.8.0/go.mod h1:J5hqkt3O0uAFnINi6JXValWIb1v0goeZM77hZzJN/fQ=
 cloud.google.com/go/datastore v1.0.0/go.mod h1:LXYbyblFSglQ5pkeyhO+Qmw7ukd3C+pD7TKLgZqpHYE=
 cloud.google.com/go/datastore v1.1.0 h1:/May9ojXjRkPBNVrq+oWLqmWCkr4OU5uRY29bu0mRyQ=
 cloud.google.com/go/datastore v1.1.0/go.mod h1:umbIZjpQpHh4hmRpGhH4tLFup+FVzqBi1b3c64qFpCk=
@@ -21,10 +30,14 @@ cloud.google.com/go/pubsub v1.0.1/go.mod h1:R0Gpsv3s54REJCy4fxDixWD93lHJMoZTyQ2k
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@@ -64,7 +77,6 @@ github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751/go.mod h1:LOuy
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@@ -172,8 +184,6 @@ github.com/flynn/noise v0.0.0-20180327030543-2492fe189ae6/go.mod h1:1i71OnUq3iUe
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@@ -209,8 +219,11 @@ github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfb
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@@ -225,6 +238,9 @@ github.com/golang/protobuf v1.4.0-rc.2/go.mod h1:LlEzMj4AhA7rCAGe4KMBDvJI+AwstrU
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@@ -235,15 +251,25 @@ github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMyw
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@@ -667,24 +693,19 @@ github.com/olekukonko/tablewriter v0.0.1/go.mod h1:vsDQFd/mU46D+Z4whnwzcISnGGzXW
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@@ -759,7 +780,6 @@ github.com/rs/zerolog v1.19.0 h1:hYz4ZVdUgjXTBUmrkrw55j1nHx68LfOKIQk5IYtyScg=
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@@ -814,6 +834,8 @@ github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/
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 github.com/uber/jaeger-client-go v2.22.1+incompatible h1:NHcubEkVbahf9t3p75TOCR83gdUHXjRJvjoBh1yACsM=
 github.com/uber/jaeger-client-go v2.22.1+incompatible/go.mod h1:WVhlPFC8FDjOFMMWRy2pZqQJSXxYSwNYOkTr/Z6d3Kk=
@@ -844,6 +866,8 @@ github.com/x448/float16 v0.8.4/go.mod h1:14CWIYCyZA/cWjXOioeEpHeN/83MdbZDRQHoFcY
 github.com/xiang90/probing v0.0.0-20190116061207-43a291ad63a2/go.mod h1:UETIi67q53MR2AWcXfiuqkDkRtnGDLqkBTpCHuJHxtU=
 github.com/xordataexchange/crypt v0.0.3-0.20170626215501-b2862e3d0a77/go.mod h1:aYKd//L2LvnjZzWKhF00oedf4jCCReLcmhLdhm1A27Q=
 github.com/yuin/goldmark v1.1.25/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
+github.com/yuin/goldmark v1.1.27/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
+github.com/yuin/goldmark v1.1.32/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
 go.etcd.io/bbolt v1.3.2/go.mod h1:IbVyRI1SCnLcuJnV2u8VeU0CEYM7e686BmAb1XKL+uU=
 go.opencensus.io v0.21.0/go.mod h1:mSImk1erAIZhrmZN+AvHh14ztQfjbGwt4TtuofqLduU=
 go.opencensus.io v0.22.0/go.mod h1:+kGneAE2xo2IficOXnaByMWTGM9T73dGwxeWcUqIpI8=
@@ -885,8 +909,8 @@ golang.org/x/crypto v0.0.0-20200221231518-2aa609cf4a9d/go.mod h1:LzIPMQfyMNhhGPh
 golang.org/x/crypto v0.0.0-20200311171314-f7b00557c8c4/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20200423211502-4bdfaf469ed5/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20200429183012-4b2356b1ed79/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
-golang.org/x/crypto v0.0.0-20200510223506-06a226fb4e37 h1:cg5LA/zNPRzIXIWSCxQW10Rvpy94aQh3LT/ShoCpkHw=
-golang.org/x/crypto v0.0.0-20200510223506-06a226fb4e37/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
+golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9 h1:psW17arqaxU48Z5kZ0CQnkZWQJsqcURM6tKiBApRjXI=
+golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/exp v0.0.0-20180321215751-8460e604b9de/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20180807140117-3d87b88a115f/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
@@ -916,6 +940,8 @@ golang.org/x/lint v0.0.0-20190930215403-16217165b5de/go.mod h1:6SW0HCj/g11FgYtHl
 golang.org/x/lint v0.0.0-20191125180803-fdd1cda4f05f/go.mod h1:5qLYkcX4OjUUV8bRuDixDT3tpyyb+LUpUlRWLxfhWrs=
 golang.org/x/lint v0.0.0-20200130185559-910be7a94367 h1:0IiAsCRByjO2QjX7ZPkw5oU9x+n1YqRL802rjC0c3Aw=
 golang.org/x/lint v0.0.0-20200130185559-910be7a94367/go.mod h1:3xt1FjdF8hUf6vQPIChWIBhFzV8gjjsPE/fR3IyQdNY=
+golang.org/x/lint v0.0.0-20200302205851-738671d3881b h1:Wh+f8QHJXR411sJR8/vRBTZ7YapZaRvUcLFFJhusH0k=
+golang.org/x/lint v0.0.0-20200302205851-738671d3881b/go.mod h1:3xt1FjdF8hUf6vQPIChWIBhFzV8gjjsPE/fR3IyQdNY=
 golang.org/x/mobile v0.0.0-20190312151609-d3739f865fa6/go.mod h1:z+o9i4GpDbdi3rU15maQ/Ox0txvL9dWGYEHz965HBQE=
 golang.org/x/mobile v0.0.0-20190719004257-d2bd2a29d028/go.mod h1:E/iHnbuqvinMTCcRqshq8CkpyQDoeVncDDYHnLhea+o=
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@@ -924,6 +950,8 @@ golang.org/x/mod v0.1.1-0.20191105210325-c90efee705ee/go.mod h1:QqPTAvyqsEbceGzB
 golang.org/x/mod v0.1.1-0.20191107180719-034126e5016b/go.mod h1:QqPTAvyqsEbceGzBzNggFXnrqF1CaUcvgkdR5Ot7KZg=
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 golang.org/x/mod v0.2.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
+golang.org/x/mod v0.3.0 h1:RM4zey1++hCTbCVQfnWeKs9/IEsaBLA8vTkd0WVtmH4=
+golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
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@@ -951,6 +979,15 @@ golang.org/x/net v0.0.0-20200222125558-5a598a2470a0/go.mod h1:z5CRVTTTmAJ677TzLL
 golang.org/x/net v0.0.0-20200226121028-0de0cce0169b/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
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@@ -967,52 +1004,17 @@ golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e h1:vcxGaoTs7kV8m5Np9uUNQin4
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@@ -1058,12 +1060,27 @@ golang.org/x/tools v0.0.0-20200207183749-b753a1ba74fa/go.mod h1:TB2adYChydJhpapK
 golang.org/x/tools v0.0.0-20200212150539-ea181f53ac56/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
 golang.org/x/tools v0.0.0-20200224181240-023911ca70b2 h1:L/G4KZvrQn7FWLN/LlulBtBzrLUhqjiGfTWWDmrh+IQ=
 golang.org/x/tools v0.0.0-20200224181240-023911ca70b2/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
+golang.org/x/tools v0.0.0-20200227222343-706bc42d1f0d/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
+golang.org/x/tools v0.0.0-20200304193943-95d2e580d8eb/go.mod h1:o4KQGtdN14AW+yjsvvwRTJJuXz8XRtIHtEnmAXLyFUw=
+golang.org/x/tools v0.0.0-20200312045724-11d5b4c81c7d/go.mod h1:o4KQGtdN14AW+yjsvvwRTJJuXz8XRtIHtEnmAXLyFUw=
 golang.org/x/tools v0.0.0-20200323144430-8dcfad9e016e h1:ssd5ulOvVWlh4kDSUF2SqzmMeWfjmwDXM+uGw/aQjRE=
 golang.org/x/tools v0.0.0-20200323144430-8dcfad9e016e/go.mod h1:Sl4aGygMT6LrqrWclx+PTx3U+LnKx/seiNR+3G19Ar8=
+golang.org/x/tools v0.0.0-20200331025713-a30bf2db82d4/go.mod h1:Sl4aGygMT6LrqrWclx+PTx3U+LnKx/seiNR+3G19Ar8=
+golang.org/x/tools v0.0.0-20200501065659-ab2804fb9c9d/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
+golang.org/x/tools v0.0.0-20200512131952-2bc93b1c0c88/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
+golang.org/x/tools v0.0.0-20200515010526-7d3b6ebf133d/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
+golang.org/x/tools v0.0.0-20200618134242-20370b0cb4b2/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
+golang.org/x/tools v0.0.0-20200729194436-6467de6f59a7/go.mod h1:njjCfa9FT2d7l9Bc6FUM5FLjQPp3cFF28FI3qnDFljA=
+golang.org/x/tools v0.0.0-20200804011535-6c149bb5ef0d/go.mod h1:njjCfa9FT2d7l9Bc6FUM5FLjQPp3cFF28FI3qnDFljA=
+golang.org/x/tools v0.0.0-20200825202427-b303f430e36d/go.mod h1:njjCfa9FT2d7l9Bc6FUM5FLjQPp3cFF28FI3qnDFljA=
+golang.org/x/tools v0.0.0-20200828161849-5deb26317202 h1:DrWbY9UUFi/sl/3HkNVoBjDbGfIPZZfgoGsGxOL1EU8=
+golang.org/x/tools v0.0.0-20200828161849-5deb26317202/go.mod h1:njjCfa9FT2d7l9Bc6FUM5FLjQPp3cFF28FI3qnDFljA=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 h1:go1bK/D/BFZV2I8cIQd1NKEZ+0owSTG1fDTci4IqFcE=
+golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 gonum.org/v1/gonum v0.0.0-20180816165407-929014505bf4/go.mod h1:Y+Yx5eoAFn32cQvJDxZx5Dpnq+c3wtXuadVZAcxbbBo=
 gonum.org/v1/gonum v0.6.1 h1:/LSrTrgZtpbXyAR6+0e152SROCkJJSh7goYWVmdPFGc=
 gonum.org/v1/gonum v0.6.1/go.mod h1:9mxDZsDKxgMAuccQkewq682L+0eCu4dCN2yonUJTCLU=
@@ -1080,12 +1097,23 @@ google.golang.org/api v0.15.0/go.mod h1:iLdEw5Ide6rF15KTC1Kkl0iskquN2gFfn9o9XIsb
 google.golang.org/api v0.17.0/go.mod h1:BwFmGc8tA3vsd7r/7kR8DY7iEEGSU04BFxCo5jP/sfE=
 google.golang.org/api v0.18.0 h1:TgDr+1inK2XVUKZx3BYAqQg/GwucGdBkzZjWaTg/I+A=
 google.golang.org/api v0.18.0/go.mod h1:BwFmGc8tA3vsd7r/7kR8DY7iEEGSU04BFxCo5jP/sfE=
+google.golang.org/api v0.19.0/go.mod h1:BwFmGc8tA3vsd7r/7kR8DY7iEEGSU04BFxCo5jP/sfE=
+google.golang.org/api v0.20.0/go.mod h1:BwFmGc8tA3vsd7r/7kR8DY7iEEGSU04BFxCo5jP/sfE=
+google.golang.org/api v0.22.0/go.mod h1:BwFmGc8tA3vsd7r/7kR8DY7iEEGSU04BFxCo5jP/sfE=
+google.golang.org/api v0.24.0/go.mod h1:lIXQywCXRcnZPGlsd8NbLnOjtAoL6em04bJ9+z0MncE=
+google.golang.org/api v0.28.0/go.mod h1:lIXQywCXRcnZPGlsd8NbLnOjtAoL6em04bJ9+z0MncE=
+google.golang.org/api v0.29.0/go.mod h1:Lcubydp8VUV7KeIHD9z2Bys/sm/vGKnG1UHuDBSrHWM=
+google.golang.org/api v0.30.0/go.mod h1:QGmEvQ87FHZNiUVJkT14jQNYJ4ZJjdRF23ZXz5138Fc=
+google.golang.org/api v0.31.0 h1:1w5Sz/puhxFo9lTtip2n47k7toB/U2nCqOKNHd3Yrbo=
+google.golang.org/api v0.31.0/go.mod h1:CL+9IBCa2WWU6gRuBWaKqGWLFFwbEUXkfeMkHLQWYWo=
 google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
 google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
 google.golang.org/appengine v1.5.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
 google.golang.org/appengine v1.6.1/go.mod h1:i06prIuMbXzDqacNJfV5OdTW448YApPu5ww/cMBSeb0=
 google.golang.org/appengine v1.6.5 h1:tycE03LOZYQNhDpS27tcQdAzLCVMaj7QT2SXxebnpCM=
 google.golang.org/appengine v1.6.5/go.mod h1:8WjMMxjGQR8xUklV/ARdw2HLXBOI7O7uCIDZVag1xfc=
+google.golang.org/appengine v1.6.6 h1:lMO5rYAqUxkmaj76jAkRUvt5JZgFymx/+Q5Mzfivuhc=
+google.golang.org/appengine v1.6.6/go.mod h1:8WjMMxjGQR8xUklV/ARdw2HLXBOI7O7uCIDZVag1xfc=
 google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
 google.golang.org/genproto v0.0.0-20180831171423-11092d34479b/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
 google.golang.org/genproto v0.0.0-20190307195333-5fe7a883aa19/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE=
@@ -1106,6 +1134,20 @@ google.golang.org/genproto v0.0.0-20200204135345-fa8e72b47b90/go.mod h1:GmwEX6Z4
 google.golang.org/genproto v0.0.0-20200212174721-66ed5ce911ce/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
 google.golang.org/genproto v0.0.0-20200224152610-e50cd9704f63 h1:YzfoEYWbODU5Fbt37+h7X16BWQbad7Q4S6gclTKFXM8=
 google.golang.org/genproto v0.0.0-20200224152610-e50cd9704f63/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
+google.golang.org/genproto v0.0.0-20200228133532-8c2c7df3a383/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
+google.golang.org/genproto v0.0.0-20200305110556-506484158171/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
+google.golang.org/genproto v0.0.0-20200312145019-da6875a35672/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
+google.golang.org/genproto v0.0.0-20200331122359-1ee6d9798940/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
+google.golang.org/genproto v0.0.0-20200430143042-b979b6f78d84/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
+google.golang.org/genproto v0.0.0-20200511104702-f5ebc3bea380/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
+google.golang.org/genproto v0.0.0-20200515170657-fc4c6c6a6587/go.mod h1:YsZOwe1myG/8QRHRsmBRE1LrgQY60beZKjly0O1fX9U=
+google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013/go.mod h1:NbSheEEYHJ7i3ixzK3sjbqSGDJWnxyFXZblF3eUsNvo=
+google.golang.org/genproto v0.0.0-20200618031413-b414f8b61790/go.mod h1:jDfRM7FcilCzHH/e9qn6dsT145K34l5v+OpcnNgKAAA=
+google.golang.org/genproto v0.0.0-20200729003335-053ba62fc06f/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
+google.golang.org/genproto v0.0.0-20200804131852-c06518451d9c/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
+google.golang.org/genproto v0.0.0-20200825200019-8632dd797987/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
+google.golang.org/genproto v0.0.0-20200831141814-d751682dd103 h1:z46CEPU+LlO0kGGwrH8h5epkkJhRZbAHYWOWD9JhLPI=
+google.golang.org/genproto v0.0.0-20200831141814-d751682dd103/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
 google.golang.org/grpc v1.20.1/go.mod h1:10oTOabMzJvdu6/UiuZezV6QK5dSlG84ov/aaiqXj38=
 google.golang.org/grpc v1.21.0/go.mod h1:oYelfM1adQP15Ek0mdvEgi9Df8B9CZIaU1084ijfRaM=
@@ -1117,14 +1159,24 @@ google.golang.org/grpc v1.27.0/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8
 google.golang.org/grpc v1.27.1/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk=
 google.golang.org/grpc v1.28.0 h1:bO/TA4OxCOummhSf10siHuG7vJOiwh7SpRpFZDkOgl4=
 google.golang.org/grpc v1.28.0/go.mod h1:rpkK4SK4GF4Ach/+MFLZUBavHOvF2JJB5uozKKal+60=
+google.golang.org/grpc v1.29.1/go.mod h1:itym6AZVZYACWQqET3MqgPpjcuV5QH3BxFS3IjizoKk=
+google.golang.org/grpc v1.30.0/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak=
+google.golang.org/grpc v1.31.0/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak=
+google.golang.org/grpc v1.31.1 h1:SfXqXS5hkufcdZ/mHtYCh53P2b+92WQq/DZcKLgsFRs=
+google.golang.org/grpc v1.31.1/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak=
 google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
 google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
 google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
 google.golang.org/protobuf v1.20.1-0.20200309200217-e05f789c0967/go.mod h1:A+miEFZTKqfCUM6K7xSMQL9OKL/b6hQv+e19PK+JZNE=
 google.golang.org/protobuf v1.21.0 h1:qdOKuR/EIArgaWNjetjgTzgVTAZ+S/WXVrq9HW9zimw=
 google.golang.org/protobuf v1.21.0/go.mod h1:47Nbq4nVaFHyn7ilMalzfO3qCViNmqZ2kzikPIcrTAo=
+google.golang.org/protobuf v1.22.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
 google.golang.org/protobuf v1.23.0 h1:4MY060fB1DLGMB/7MBTLnwQUY6+F09GEiz6SsrNqyzM=
 google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
+google.golang.org/protobuf v1.23.1-0.20200526195155-81db48ad09cc/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
+google.golang.org/protobuf v1.24.0/go.mod h1:r/3tXBNzIEhYS9I1OUVjXDlt8tc493IdKGjtUeSXeh4=
+google.golang.org/protobuf v1.25.0 h1:Ejskq+SyPohKW+1uil0JJMtmHCgJPJ/qWTxr8qp+R4c=
+google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlbajtzgsN7c=
 gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
@@ -1162,6 +1214,8 @@ honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWh
 honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
 honnef.co/go/tools v0.0.1-2020.1.3 h1:sXmLre5bzIR6ypkjXCDI3jHPssRhc8KD/Ome589sc3U=
 honnef.co/go/tools v0.0.1-2020.1.3/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
+honnef.co/go/tools v0.0.1-2020.1.4 h1:UoveltGrhghAA7ePc+e+QYDHXrBps2PqFZiHkGR/xK8=
+honnef.co/go/tools v0.0.1-2020.1.4/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
 rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=
 rsc.io/pdf v0.1.1/go.mod h1:n8OzWcQ6Sp37PL01nO98y4iUCRdTGarVfzxY20ICaU4=
 rsc.io/quote/v3 v3.1.0/go.mod h1:yEA65RcK8LyAZtP9Kv3t0HmxON59tX3rD+tICJqUlj0=
diff --git a/integration/benchmark/tx_per_second_test.go b/integration/benchmark/tx_per_second_test.go
index c528ae2f1f7..b655a9a3757 100644
--- a/integration/benchmark/tx_per_second_test.go
+++ b/integration/benchmark/tx_per_second_test.go
@@ -215,18 +215,6 @@ func (gs *TransactionsPerSecondSuite) SetTokenAddresses() {
 	fmt.Println("Flow Address:", flowTokenAddress)
 }
 
-const createAccountTemplate = `
-transaction(publicKeys: [[UInt8]], code: [UInt8]) {
-  prepare(signer: AuthAccount) {
-	let acct = AuthAccount(payer: signer)
-	for key in publicKeys {
-		acct.addPublicKey(key)
-	}
-	acct.setCode(code)
-  }
-}
-`
-
 // CreateAccountAndTransfer will create an account and transfer 1000 tokens to it
 func (gs *TransactionsPerSecondSuite) CreateAccountAndTransfer(keyIndex int) (flowsdk.Address, *flowsdk.AccountKey) {
 	ctx := context.Background()
diff --git a/integration/convert/convert.go b/integration/convert/convert.go
index 50cb2d828de..50b29d78876 100644
--- a/integration/convert/convert.go
+++ b/integration/convert/convert.go
@@ -34,14 +34,14 @@ func ToSDKTransactionSignature(sig flow.TransactionSignature) sdk.TransactionSig
 		Address:     sdk.Address(sig.Address),
 		SignerIndex: sig.SignerIndex,
 		Signature:   sig.Signature,
-		KeyID:       int(sig.KeyID),
+		KeyIndex:    int(sig.KeyIndex),
 	}
 }
 
 func ToSDKProposalKey(key flow.ProposalKey) sdk.ProposalKey {
 	return sdk.ProposalKey{
 		Address:        sdk.Address(key.Address),
-		KeyID:          int(key.KeyID),
+		KeyIndex:       int(key.KeyIndex),
 		SequenceNumber: key.SequenceNumber,
 	}
 }
diff --git a/integration/go.mod b/integration/go.mod
index a628b031352..24a66772ddf 100644
--- a/integration/go.mod
+++ b/integration/go.mod
@@ -9,18 +9,23 @@ require (
 	github.com/docker/go-connections v0.4.0
 	github.com/go-openapi/strfmt v0.19.5 // indirect
 	github.com/jedib0t/go-pretty v4.3.0+incompatible
-	github.com/onflow/cadence v0.9.2
+	github.com/onflow/cadence v0.10.0
 	github.com/onflow/flow-go v0.4.1-0.20200715183900-b337e998d486
-	github.com/onflow/flow-go-sdk v0.8.0
+	github.com/onflow/flow-go-sdk v0.11.1-0.20201006202132-809a7df549e7
 	github.com/onflow/flow-go/crypto v0.9.4
-	github.com/onflow/flow/protobuf/go/flow v0.1.7
+	github.com/onflow/flow/protobuf/go/flow v0.1.8
 	github.com/plus3it/gorecurcopy v0.0.1
 	github.com/rs/zerolog v1.19.0
 	github.com/stretchr/testify v1.6.1
-	google.golang.org/grpc v1.28.0
+	google.golang.org/grpc v1.31.1
 	gopkg.in/yaml.v2 v2.2.8
 )
 
+// temp fix for MacOS build. See comment https://github.com/ory/dockertest/issues/208#issuecomment-686820414
+replace golang.org/x/sys => golang.org/x/sys v0.0.0-20200826173525-f9321e4c35a6
+
+replace github.com/fxamacker/cbor/v2 => github.com/turbolent/cbor/v2 v2.2.1-0.20200911003300-cac23af49154
+
 replace github.com/onflow/flow-go => ../
 
 replace github.com/onflow/flow-go/crypto => ../crypto
diff --git a/integration/go.sum b/integration/go.sum
index b6eafc105da..56536ea84d4 100644
--- a/integration/go.sum
+++ b/integration/go.sum
@@ -9,17 +9,28 @@ cloud.google.com/go v0.46.3/go.mod h1:a6bKKbmY7er1mI7TEI4lsAkts/mkhTSZK8w33B4RAg
 cloud.google.com/go v0.50.0/go.mod h1:r9sluTvynVuxRIOHXQEHMFffphuXHOMZMycpNR5e6To=
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@@ -63,7 +74,6 @@ github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751/go.mod h1:LOuy
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@@ -141,7 +151,6 @@ github.com/davecgh/go-spew v0.0.0-20171005155431-ecdeabc65495/go.mod h1:J7Y8YcW2
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@@ -204,8 +213,6 @@ github.com/flynn/noise v0.0.0-20180327030543-2492fe189ae6/go.mod h1:1i71OnUq3iUe
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@@ -247,8 +254,11 @@ github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfb
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@@ -265,6 +275,9 @@ github.com/golang/protobuf v1.4.0-rc.2/go.mod h1:LlEzMj4AhA7rCAGe4KMBDvJI+AwstrU
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@@ -275,14 +288,23 @@ github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMyw
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@@ -749,23 +771,19 @@ github.com/olekukonko/tablewriter v0.0.1/go.mod h1:vsDQFd/mU46D+Z4whnwzcISnGGzXW
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@@ -914,6 +932,8 @@ github.com/syndtr/goleveldb v1.0.1-0.20190923125748-758128399b1d/go.mod h1:9OrXJ
 github.com/tidwall/pretty v1.0.0 h1:HsD+QiTn7sK6flMKIvNmpqz1qrpP3Ps6jOKIKMooyg4=
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 github.com/tmc/grpc-websocket-proxy v0.0.0-20190109142713-0ad062ec5ee5/go.mod h1:ncp9v5uamzpCO7NfCPTXjqaC+bZgJeR0sMTm6dMHP7U=
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 github.com/tyler-smith/go-bip39 v1.0.1-0.20181017060643-dbb3b84ba2ef/go.mod h1:sJ5fKU0s6JVwZjjcUEX2zFOnvq0ASQ2K9Zr6cf67kNs=
 github.com/uber/jaeger-client-go v2.22.1+incompatible h1:NHcubEkVbahf9t3p75TOCR83gdUHXjRJvjoBh1yACsM=
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@@ -948,6 +968,8 @@ github.com/xeipuuv/gojsonschema v0.0.0-20180618132009-1d523034197f/go.mod h1:5yf
 github.com/xiang90/probing v0.0.0-20190116061207-43a291ad63a2/go.mod h1:UETIi67q53MR2AWcXfiuqkDkRtnGDLqkBTpCHuJHxtU=
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 github.com/yuin/goldmark v1.1.25/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
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 go.etcd.io/bbolt v1.3.2/go.mod h1:IbVyRI1SCnLcuJnV2u8VeU0CEYM7e686BmAb1XKL+uU=
 go.etcd.io/bbolt v1.3.2/go.mod h1:IbVyRI1SCnLcuJnV2u8VeU0CEYM7e686BmAb1XKL+uU=
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@@ -999,8 +1021,8 @@ golang.org/x/crypto v0.0.0-20200423211502-4bdfaf469ed5 h1:Q7tZBpemrlsc2I7IyODzht
 golang.org/x/crypto v0.0.0-20200423211502-4bdfaf469ed5/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20200423211502-4bdfaf469ed5/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20200429183012-4b2356b1ed79/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
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@@ -1029,6 +1051,8 @@ golang.org/x/lint v0.0.0-20190930215403-16217165b5de/go.mod h1:6SW0HCj/g11FgYtHl
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@@ -1037,6 +1061,8 @@ golang.org/x/mod v0.1.1-0.20191105210325-c90efee705ee/go.mod h1:QqPTAvyqsEbceGzB
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@@ -1065,6 +1091,15 @@ golang.org/x/net v0.0.0-20200226121028-0de0cce0169b h1:0mm1VjtFUOIlE1SbDlwjYaDxZ
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@@ -1079,56 +1114,16 @@ golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e h1:vcxGaoTs7kV8m5Np9uUNQin4
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+golang.org/x/sys v0.0.0-20200826173525-f9321e4c35a6 h1:DvY3Zkh7KabQE/kfzMvYvKirSiguP9Q/veMtkYyf0o8=
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 golang.org/x/text v0.0.0-20170915032832-14c0d48ead0c/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.1-0.20180807135948-17ff2d5776d2/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.2 h1:tW2bmiBqwgJj/UpqtC8EpXEZVYOwU0yG4iWbprSVAcs=
 golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
+golang.org/x/text v0.3.3 h1:cokOdA+Jmi5PJGXLlLllQSgYigAEfHXJAERHVMaCc2k=
+golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/time v0.0.0-20181108054448-85acf8d2951c/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/time v0.0.0-20190308202827-9d24e82272b4/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/time v0.0.0-20191024005414-555d28b269f0 h1:/5xXl8Y5W96D+TtHSlonuFqGHIWVuyCkGJLwGh9JJFs=
@@ -1173,12 +1168,27 @@ golang.org/x/tools v0.0.0-20200207183749-b753a1ba74fa/go.mod h1:TB2adYChydJhpapK
 golang.org/x/tools v0.0.0-20200212150539-ea181f53ac56/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
 golang.org/x/tools v0.0.0-20200224181240-023911ca70b2 h1:L/G4KZvrQn7FWLN/LlulBtBzrLUhqjiGfTWWDmrh+IQ=
 golang.org/x/tools v0.0.0-20200224181240-023911ca70b2/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
+golang.org/x/tools v0.0.0-20200227222343-706bc42d1f0d/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
+golang.org/x/tools v0.0.0-20200304193943-95d2e580d8eb/go.mod h1:o4KQGtdN14AW+yjsvvwRTJJuXz8XRtIHtEnmAXLyFUw=
+golang.org/x/tools v0.0.0-20200312045724-11d5b4c81c7d/go.mod h1:o4KQGtdN14AW+yjsvvwRTJJuXz8XRtIHtEnmAXLyFUw=
 golang.org/x/tools v0.0.0-20200323144430-8dcfad9e016e h1:ssd5ulOvVWlh4kDSUF2SqzmMeWfjmwDXM+uGw/aQjRE=
 golang.org/x/tools v0.0.0-20200323144430-8dcfad9e016e/go.mod h1:Sl4aGygMT6LrqrWclx+PTx3U+LnKx/seiNR+3G19Ar8=
+golang.org/x/tools v0.0.0-20200331025713-a30bf2db82d4/go.mod h1:Sl4aGygMT6LrqrWclx+PTx3U+LnKx/seiNR+3G19Ar8=
+golang.org/x/tools v0.0.0-20200501065659-ab2804fb9c9d/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
+golang.org/x/tools v0.0.0-20200512131952-2bc93b1c0c88/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
+golang.org/x/tools v0.0.0-20200515010526-7d3b6ebf133d/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
+golang.org/x/tools v0.0.0-20200618134242-20370b0cb4b2/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
+golang.org/x/tools v0.0.0-20200729194436-6467de6f59a7/go.mod h1:njjCfa9FT2d7l9Bc6FUM5FLjQPp3cFF28FI3qnDFljA=
+golang.org/x/tools v0.0.0-20200804011535-6c149bb5ef0d/go.mod h1:njjCfa9FT2d7l9Bc6FUM5FLjQPp3cFF28FI3qnDFljA=
+golang.org/x/tools v0.0.0-20200825202427-b303f430e36d/go.mod h1:njjCfa9FT2d7l9Bc6FUM5FLjQPp3cFF28FI3qnDFljA=
+golang.org/x/tools v0.0.0-20200828161849-5deb26317202 h1:DrWbY9UUFi/sl/3HkNVoBjDbGfIPZZfgoGsGxOL1EU8=
+golang.org/x/tools v0.0.0-20200828161849-5deb26317202/go.mod h1:njjCfa9FT2d7l9Bc6FUM5FLjQPp3cFF28FI3qnDFljA=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 h1:go1bK/D/BFZV2I8cIQd1NKEZ+0owSTG1fDTci4IqFcE=
+golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 gonum.org/v1/gonum v0.0.0-20180816165407-929014505bf4/go.mod h1:Y+Yx5eoAFn32cQvJDxZx5Dpnq+c3wtXuadVZAcxbbBo=
 gonum.org/v1/gonum v0.6.1 h1:/LSrTrgZtpbXyAR6+0e152SROCkJJSh7goYWVmdPFGc=
 gonum.org/v1/gonum v0.6.1/go.mod h1:9mxDZsDKxgMAuccQkewq682L+0eCu4dCN2yonUJTCLU=
@@ -1194,12 +1204,22 @@ google.golang.org/api v0.14.0/go.mod h1:iLdEw5Ide6rF15KTC1Kkl0iskquN2gFfn9o9XIsb
 google.golang.org/api v0.15.0/go.mod h1:iLdEw5Ide6rF15KTC1Kkl0iskquN2gFfn9o9XIsbkAI=
 google.golang.org/api v0.17.0/go.mod h1:BwFmGc8tA3vsd7r/7kR8DY7iEEGSU04BFxCo5jP/sfE=
 google.golang.org/api v0.18.0/go.mod h1:BwFmGc8tA3vsd7r/7kR8DY7iEEGSU04BFxCo5jP/sfE=
+google.golang.org/api v0.19.0/go.mod h1:BwFmGc8tA3vsd7r/7kR8DY7iEEGSU04BFxCo5jP/sfE=
+google.golang.org/api v0.20.0/go.mod h1:BwFmGc8tA3vsd7r/7kR8DY7iEEGSU04BFxCo5jP/sfE=
+google.golang.org/api v0.22.0/go.mod h1:BwFmGc8tA3vsd7r/7kR8DY7iEEGSU04BFxCo5jP/sfE=
+google.golang.org/api v0.24.0/go.mod h1:lIXQywCXRcnZPGlsd8NbLnOjtAoL6em04bJ9+z0MncE=
+google.golang.org/api v0.28.0/go.mod h1:lIXQywCXRcnZPGlsd8NbLnOjtAoL6em04bJ9+z0MncE=
+google.golang.org/api v0.29.0/go.mod h1:Lcubydp8VUV7KeIHD9z2Bys/sm/vGKnG1UHuDBSrHWM=
+google.golang.org/api v0.30.0/go.mod h1:QGmEvQ87FHZNiUVJkT14jQNYJ4ZJjdRF23ZXz5138Fc=
+google.golang.org/api v0.31.0/go.mod h1:CL+9IBCa2WWU6gRuBWaKqGWLFFwbEUXkfeMkHLQWYWo=
 google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
 google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
 google.golang.org/appengine v1.5.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
 google.golang.org/appengine v1.6.1/go.mod h1:i06prIuMbXzDqacNJfV5OdTW448YApPu5ww/cMBSeb0=
 google.golang.org/appengine v1.6.5 h1:tycE03LOZYQNhDpS27tcQdAzLCVMaj7QT2SXxebnpCM=
 google.golang.org/appengine v1.6.5/go.mod h1:8WjMMxjGQR8xUklV/ARdw2HLXBOI7O7uCIDZVag1xfc=
+google.golang.org/appengine v1.6.6 h1:lMO5rYAqUxkmaj76jAkRUvt5JZgFymx/+Q5Mzfivuhc=
+google.golang.org/appengine v1.6.6/go.mod h1:8WjMMxjGQR8xUklV/ARdw2HLXBOI7O7uCIDZVag1xfc=
 google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
 google.golang.org/genproto v0.0.0-20180831171423-11092d34479b/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
 google.golang.org/genproto v0.0.0-20190307195333-5fe7a883aa19/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE=
@@ -1220,6 +1240,20 @@ google.golang.org/genproto v0.0.0-20200204135345-fa8e72b47b90/go.mod h1:GmwEX6Z4
 google.golang.org/genproto v0.0.0-20200212174721-66ed5ce911ce/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
 google.golang.org/genproto v0.0.0-20200224152610-e50cd9704f63 h1:YzfoEYWbODU5Fbt37+h7X16BWQbad7Q4S6gclTKFXM8=
 google.golang.org/genproto v0.0.0-20200224152610-e50cd9704f63/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
+google.golang.org/genproto v0.0.0-20200228133532-8c2c7df3a383/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
+google.golang.org/genproto v0.0.0-20200305110556-506484158171/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
+google.golang.org/genproto v0.0.0-20200312145019-da6875a35672/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
+google.golang.org/genproto v0.0.0-20200331122359-1ee6d9798940/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
+google.golang.org/genproto v0.0.0-20200430143042-b979b6f78d84/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
+google.golang.org/genproto v0.0.0-20200511104702-f5ebc3bea380/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
+google.golang.org/genproto v0.0.0-20200515170657-fc4c6c6a6587/go.mod h1:YsZOwe1myG/8QRHRsmBRE1LrgQY60beZKjly0O1fX9U=
+google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013/go.mod h1:NbSheEEYHJ7i3ixzK3sjbqSGDJWnxyFXZblF3eUsNvo=
+google.golang.org/genproto v0.0.0-20200618031413-b414f8b61790/go.mod h1:jDfRM7FcilCzHH/e9qn6dsT145K34l5v+OpcnNgKAAA=
+google.golang.org/genproto v0.0.0-20200729003335-053ba62fc06f/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
+google.golang.org/genproto v0.0.0-20200804131852-c06518451d9c/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
+google.golang.org/genproto v0.0.0-20200825200019-8632dd797987/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
+google.golang.org/genproto v0.0.0-20200831141814-d751682dd103 h1:z46CEPU+LlO0kGGwrH8h5epkkJhRZbAHYWOWD9JhLPI=
+google.golang.org/genproto v0.0.0-20200831141814-d751682dd103/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
 google.golang.org/grpc v1.20.1/go.mod h1:10oTOabMzJvdu6/UiuZezV6QK5dSlG84ov/aaiqXj38=
 google.golang.org/grpc v1.21.0/go.mod h1:oYelfM1adQP15Ek0mdvEgi9Df8B9CZIaU1084ijfRaM=
@@ -1231,14 +1265,24 @@ google.golang.org/grpc v1.27.0/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8
 google.golang.org/grpc v1.27.1/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk=
 google.golang.org/grpc v1.28.0 h1:bO/TA4OxCOummhSf10siHuG7vJOiwh7SpRpFZDkOgl4=
 google.golang.org/grpc v1.28.0/go.mod h1:rpkK4SK4GF4Ach/+MFLZUBavHOvF2JJB5uozKKal+60=
+google.golang.org/grpc v1.29.1/go.mod h1:itym6AZVZYACWQqET3MqgPpjcuV5QH3BxFS3IjizoKk=
+google.golang.org/grpc v1.30.0/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak=
+google.golang.org/grpc v1.31.0/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak=
+google.golang.org/grpc v1.31.1 h1:SfXqXS5hkufcdZ/mHtYCh53P2b+92WQq/DZcKLgsFRs=
+google.golang.org/grpc v1.31.1/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak=
 google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
 google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
 google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
 google.golang.org/protobuf v1.20.1-0.20200309200217-e05f789c0967/go.mod h1:A+miEFZTKqfCUM6K7xSMQL9OKL/b6hQv+e19PK+JZNE=
 google.golang.org/protobuf v1.21.0 h1:qdOKuR/EIArgaWNjetjgTzgVTAZ+S/WXVrq9HW9zimw=
 google.golang.org/protobuf v1.21.0/go.mod h1:47Nbq4nVaFHyn7ilMalzfO3qCViNmqZ2kzikPIcrTAo=
+google.golang.org/protobuf v1.22.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
 google.golang.org/protobuf v1.23.0 h1:4MY060fB1DLGMB/7MBTLnwQUY6+F09GEiz6SsrNqyzM=
 google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
+google.golang.org/protobuf v1.23.1-0.20200526195155-81db48ad09cc/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
+google.golang.org/protobuf v1.24.0/go.mod h1:r/3tXBNzIEhYS9I1OUVjXDlt8tc493IdKGjtUeSXeh4=
+google.golang.org/protobuf v1.25.0 h1:Ejskq+SyPohKW+1uil0JJMtmHCgJPJ/qWTxr8qp+R4c=
+google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlbajtzgsN7c=
 gopkg.in/airbrake/gobrake.v2 v2.0.9/go.mod h1:/h5ZAUhDkGaJfjzjKLSjv6zCL6O0LLBxU4K+aSYdM/U=
 gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
@@ -1278,6 +1322,7 @@ honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWh
 honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
 honnef.co/go/tools v0.0.1-2020.1.3 h1:sXmLre5bzIR6ypkjXCDI3jHPssRhc8KD/Ome589sc3U=
 honnef.co/go/tools v0.0.1-2020.1.3/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
+honnef.co/go/tools v0.0.1-2020.1.4/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
 k8s.io/kubernetes v1.13.0/go.mod h1:ocZa8+6APFNC2tX1DZASIbocyYT5jHzqFVsY5aoB7Jk=
 rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=
 rsc.io/pdf v0.1.1/go.mod h1:n8OzWcQ6Sp37PL01nO98y4iUCRdTGarVfzxY20ICaU4=
diff --git a/integration/testnet/client.go b/integration/testnet/client.go
index 84b9b8eab65..f72746bf812 100644
--- a/integration/testnet/client.go
+++ b/integration/testnet/client.go
@@ -98,12 +98,12 @@ func (c *Client) Events(ctx context.Context, typ string) ([]client.BlockEvents,
 
 // DeployContract submits a transaction to deploy a contract with the given
 // code to the root account.
-func (c *Client) DeployContract(ctx context.Context, refID sdk.Identifier, contract dsl.CadenceCode) error {
+func (c *Client) DeployContract(ctx context.Context, refID sdk.Identifier, contract dsl.Contract) error {
 
 	code := dsl.Transaction{
 		Import: dsl.Import{},
 		Content: dsl.Prepare{
-			Content: dsl.UpdateAccountCode{Code: contract.ToCadence()},
+			Content: dsl.UpdateAccountCode{Code: contract.ToCadence(), Name: contract.Name},
 		},
 	}
 
@@ -120,7 +120,7 @@ func (c *Client) DeployContract(ctx context.Context, refID sdk.Identifier, contr
 // SignTransaction signs the transaction using the proposer's key
 func (c *Client) SignTransaction(tx *sdk.Transaction) (*sdk.Transaction, error) {
 
-	err := tx.SignEnvelope(tx.Payer, tx.ProposalKey.KeyID, c.signer)
+	err := tx.SignEnvelope(tx.Payer, tx.ProposalKey.KeyIndex, c.signer)
 	if err != nil {
 		return nil, err
 	}
diff --git a/integration/tests/common/mvp_test.go b/integration/tests/common/mvp_test.go
index 39f84d8ffdd..57056aff04c 100644
--- a/integration/tests/common/mvp_test.go
+++ b/integration/tests/common/mvp_test.go
@@ -92,7 +92,10 @@ func runMVPTest(t *testing.T, ctx context.Context, net *testnet.FlowNetwork) {
 	serviceAddress := sdk.Address(serviceAccountClient.Chain.ServiceAddress())
 
 	// Generate the account creation transaction
-	createAccountTx := templates.CreateAccount([]*sdk.AccountKey{accountKey}, []byte(CounterContract.ToCadence()), serviceAddress).
+	createAccountTx := templates.CreateAccountWithContracts(
+		[]*sdk.AccountKey{accountKey},
+		map[string][]byte{CounterContract.Name: []byte(CounterContract.ToCadence())},
+		serviceAddress).
 		SetReferenceBlockID(sdk.Identifier(root.ID())).
 		SetProposalKey(serviceAddress, 0, serviceAccountClient.GetSeqNumber()).
 		SetPayer(serviceAddress)
diff --git a/integration/tests/common/receipt_state.go b/integration/tests/common/receipt_state.go
index afe7efcc7c1..9c638c3d79a 100644
--- a/integration/tests/common/receipt_state.go
+++ b/integration/tests/common/receipt_state.go
@@ -75,7 +75,9 @@ func WaitUntilFinalizedStateCommitmentChanged(t *testing.T, bs *BlockState, rs *
 		initialFinalizedSC = r1finalState
 	}
 
-	currentHeight := b1.Header.Height + 1
+	initFinalizedheight := b1.Header.Height
+	currentHeight := initFinalizedheight + 1
+
 	currentID := b1.Header.ID()
 	var b2 *messages.BlockProposal
 	var r2 *flow.ExecutionReceipt
@@ -98,7 +100,9 @@ func WaitUntilFinalizedStateCommitmentChanged(t *testing.T, bs *BlockState, rs *
 		return true
 	}, receiptStateTimeout, 100*time.Millisecond,
 		fmt.Sprintf("did not receive an execution receipt with a different state commitment from %x within %v seconds,"+
+			" initial finalized height: %v "+
 			" last block checked height %v, last block checked ID %x", initialFinalizedSC, receiptStateTimeout,
+			initFinalizedheight,
 			currentHeight, currentID))
 
 	return b2, r2
diff --git a/integration/utils/batchLoadGenerator.go b/integration/utils/batchLoadGenerator.go
index d15c366a5b2..dfae7857107 100644
--- a/integration/utils/batchLoadGenerator.go
+++ b/integration/utils/batchLoadGenerator.go
@@ -156,13 +156,13 @@ func (lg *BatchLoadGenerator) setupServiceAccountKeys() error {
 
 	addKeysTx.
 		SetReferenceBlockID(blockRef).
-		SetProposalKey(*lg.serviceAccount.address, lg.serviceAccount.accountKey.ID, lg.serviceAccount.accountKey.SequenceNumber).
+		SetProposalKey(*lg.serviceAccount.address, lg.serviceAccount.accountKey.Index, lg.serviceAccount.accountKey.SequenceNumber).
 		SetPayer(*lg.serviceAccount.address)
 
 	lg.serviceAccount.signerLock.Lock()
 	defer lg.serviceAccount.signerLock.Unlock()
 
-	err = addKeysTx.SignEnvelope(*lg.serviceAccount.address, lg.serviceAccount.accountKey.ID, lg.serviceAccount.signer)
+	err = addKeysTx.SignEnvelope(*lg.serviceAccount.address, lg.serviceAccount.accountKey.Index, lg.serviceAccount.signer)
 	if err != nil {
 		return err
 	}
@@ -218,7 +218,6 @@ func (lg *BatchLoadGenerator) createAccounts() error {
 
 		createAccountTx := templates.CreateAccount(
 			[]*flowsdk.AccountKey{accountKey},
-			nil,
 			*lg.serviceAccount.address,
 		)
 
diff --git a/integration/utils/contLoadGenerator.go b/integration/utils/contLoadGenerator.go
index 6b90c6325ee..a613bf59d93 100644
--- a/integration/utils/contLoadGenerator.go
+++ b/integration/utils/contLoadGenerator.go
@@ -193,7 +193,7 @@ func (lg *ContLoadGenerator) createAccounts(num int) error {
 		SetReferenceBlockID(blockRef).
 		SetProposalKey(
 			*lg.serviceAccount.address,
-			lg.serviceAccount.accountKey.ID,
+			lg.serviceAccount.accountKey.Index,
 			lg.serviceAccount.accountKey.SequenceNumber,
 		).
 		AddAuthorizer(*lg.serviceAccount.address).
@@ -229,7 +229,7 @@ func (lg *ContLoadGenerator) createAccounts(num int) error {
 
 	err = createAccountTx.SignEnvelope(
 		*lg.serviceAccount.address,
-		lg.serviceAccount.accountKey.ID,
+		lg.serviceAccount.accountKey.Index,
 		lg.serviceAccount.signer,
 	)
 	if err != nil {
diff --git a/model/flow/account.go b/model/flow/account.go
index 186e8905173..16acfb813c7 100644
--- a/model/flow/account.go
+++ b/model/flow/account.go
@@ -15,10 +15,10 @@ import (
 //
 // An account can be an externally owned account or a contract account with code.
 type Account struct {
-	Address Address
-	Balance uint64
-	Code    []byte
-	Keys    []AccountPublicKey
+	Address   Address
+	Balance   uint64
+	Keys      []AccountPublicKey
+	Contracts map[string][]byte
 }
 
 // AccountPublicKey is a public key associated with an account.
diff --git a/model/flow/transaction.go b/model/flow/transaction.go
index a481569c3cf..5652a240f3e 100644
--- a/model/flow/transaction.go
+++ b/model/flow/transaction.go
@@ -109,7 +109,7 @@ func (tb *TransactionBody) SetGasLimit(limit uint64) *TransactionBody {
 func (tb *TransactionBody) SetProposalKey(address Address, keyID uint64, sequenceNum uint64) *TransactionBody {
 	proposalKey := ProposalKey{
 		Address:        address,
-		KeyID:          keyID,
+		KeyIndex:       keyID,
 		SequenceNumber: sequenceNum,
 	}
 	tb.ProposalKey = proposalKey
@@ -272,7 +272,7 @@ func (tb *TransactionBody) createSignature(address Address, keyID uint64, sig []
 	return TransactionSignature{
 		Address:     address,
 		SignerIndex: signerIndex,
-		KeyID:       keyID,
+		KeyIndex:    keyID,
 		Signature:   sig,
 	}
 }
@@ -303,7 +303,7 @@ func (tb *TransactionBody) payloadCanonicalForm() interface{} {
 		ReferenceBlockID:          tb.ReferenceBlockID[:],
 		GasLimit:                  tb.GasLimit,
 		ProposalKeyAddress:        tb.ProposalKey.Address.Bytes(),
-		ProposalKeyID:             tb.ProposalKey.KeyID,
+		ProposalKeyID:             tb.ProposalKey.KeyIndex,
 		ProposalKeySequenceNumber: tb.ProposalKey.SequenceNumber,
 		Payer:                     tb.Payer.Bytes(),
 		Authorizers:               authorizers,
@@ -382,7 +382,7 @@ func (f TransactionField) String() string {
 // A ProposalKey is the key that specifies the proposal key and sequence number for a transaction.
 type ProposalKey struct {
 	Address        Address
-	KeyID          uint64
+	KeyIndex       uint64
 	SequenceNumber uint64
 }
 
@@ -390,7 +390,7 @@ type ProposalKey struct {
 type TransactionSignature struct {
 	Address     Address
 	SignerIndex int
-	KeyID       uint64
+	KeyIndex    uint64
 	Signature   []byte
 }
 
@@ -405,7 +405,7 @@ func (s TransactionSignature) canonicalForm() interface{} {
 		Signature   []byte
 	}{
 		SignerIndex: uint(s.SignerIndex), // int is not RLP-serializable
-		KeyID:       uint(s.KeyID),       // int is not RLP-serializable
+		KeyID:       uint(s.KeyIndex),    // int is not RLP-serializable
 		Signature:   s.Signature,
 	}
 }
@@ -414,7 +414,7 @@ func compareSignatures(signatures []TransactionSignature) func(i, j int) bool {
 	return func(i, j int) bool {
 		sigA := signatures[i]
 		sigB := signatures[j]
-		return sigA.SignerIndex < sigB.SignerIndex || sigA.KeyID < sigB.KeyID
+		return sigA.SignerIndex < sigB.SignerIndex || sigA.KeyIndex < sigB.KeyIndex
 	}
 }
 
diff --git a/utils/dsl/dsl.go b/utils/dsl/dsl.go
index 60e5d7158c5..ccf9c648be0 100644
--- a/utils/dsl/dsl.go
+++ b/utils/dsl/dsl.go
@@ -70,6 +70,7 @@ func (i Import) ToCadence() string {
 
 type UpdateAccountCode struct {
 	Code string
+	Name string
 }
 
 func (u UpdateAccountCode) ToCadence() string {
@@ -80,8 +81,8 @@ func (u UpdateAccountCode) ToCadence() string {
 
 	return fmt.Sprintf(`
 		let code = "%s"
-        signer.setCode(code.decodeHex())
-    `, hexCode)
+        signer.contracts.add(name: "%s", code: code.decodeHex())
+    `, hexCode, u.Name)
 }
 
 type Main struct {
diff --git a/utils/unittest/execution_state.go b/utils/unittest/execution_state.go
index 3bf230a5120..7aa267d02c5 100644
--- a/utils/unittest/execution_state.go
+++ b/utils/unittest/execution_state.go
@@ -19,7 +19,7 @@ import (
 const ServiceAccountPrivateKeyHex = "e3a08ae3d0461cfed6d6f49bfc25fa899351c39d1bd21fdba8c87595b6c49bb4cc430201"
 
 // Pre-calculated state commitment with root account with the above private key
-const GenesisStateCommitmentHex = "69acb970e2623ffe4b3147b70fceb4c43e8aad04b79fa31281042587b7672e84"
+const GenesisStateCommitmentHex = "41dcd1fd545032aef4964ec9ed9e5757beb47f7cb71acbf627554f7b96391ee3"
 
 var GenesisStateCommitment flow.StateCommitment
 
diff --git a/utils/unittest/fixtures.go b/utils/unittest/fixtures.go
index 54ec70727b7..30073760a01 100644
--- a/utils/unittest/fixtures.go
+++ b/utils/unittest/fixtures.go
@@ -32,14 +32,14 @@ func TransactionSignatureFixture() flow.TransactionSignature {
 		Address:     AddressFixture(),
 		SignerIndex: 0,
 		Signature:   []byte{1, 2, 3, 4},
-		KeyID:       1,
+		KeyIndex:    1,
 	}
 }
 
 func ProposalKeyFixture() flow.ProposalKey {
 	return flow.ProposalKey{
 		Address:        AddressFixture(),
-		KeyID:          1,
+		KeyIndex:       1,
 		SequenceNumber: 0,
 	}
 }