diff --git a/marketplace/chaincode-go/core.yaml b/marketplace/chaincode-go/core.yaml new file mode 100644 index 00000000..e69de29b diff --git a/marketplace/chaincode-go/go.mod b/marketplace/chaincode-go/go.mod new file mode 100644 index 00000000..67595e42 --- /dev/null +++ b/marketplace/chaincode-go/go.mod @@ -0,0 +1,34 @@ +module github.com/hyperledger/fabric-samples/chaincode/marketplace + + go 1.18 + + require ( + github.com/hyperledger/fabric-chaincode-go v0.0.0-20220720122508-9207360bbddd + github.com/hyperledger/fabric-contract-api-go v1.2.0 + ) + + require ( + github.com/go-openapi/jsonpointer v0.19.5 // indirect + github.com/go-openapi/jsonreference v0.20.0 // indirect + github.com/go-openapi/spec v0.20.6 // indirect + github.com/go-openapi/swag v0.21.1 // indirect + github.com/gobuffalo/envy v1.10.1 // indirect + github.com/gobuffalo/packd v1.0.1 // indirect + github.com/gobuffalo/packr v1.30.1 // indirect + github.com/golang/protobuf v1.5.2 // indirect + github.com/hyperledger/fabric-protos-go v0.0.0-20220613214546-bf864f01d75e // indirect + github.com/joho/godotenv v1.4.0 // indirect + github.com/josharian/intern v1.0.0 // indirect + github.com/mailru/easyjson v0.7.7 // indirect + github.com/rogpeppe/go-internal v1.8.1 // indirect + github.com/xeipuuv/gojsonpointer v0.0.0-20190905194746-02993c407bfb // indirect + github.com/xeipuuv/gojsonreference v0.0.0-20180127040603-bd5ef7bd5415 // indirect + github.com/xeipuuv/gojsonschema v1.2.0 // indirect + golang.org/x/net v0.0.0-20220708220712-1185a9018129 // indirect + golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8 // indirect + golang.org/x/text v0.3.7 // indirect + google.golang.org/genproto v0.0.0-20220719170305-83ca9fad585f // indirect + google.golang.org/grpc v1.48.0 // indirect + google.golang.org/protobuf v1.28.0 // indirect + gopkg.in/yaml.v2 v2.4.0 // indirect + ) diff --git a/marketplace/chaincode-go/go.sum b/marketplace/chaincode-go/go.sum new file mode 100644 index 00000000..76e5f4c6 --- /dev/null +++ b/marketplace/chaincode-go/go.sum @@ -0,0 +1,237 @@ +cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= +cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= +github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU= +github.com/antihax/optional v1.0.0/go.mod h1:uupD/76wgC+ih3iEmQUL+0Ugr19nfwCT1kdvxnR2qWY= +github.com/armon/consul-api v0.0.0-20180202201655-eb2c6b5be1b6/go.mod h1:grANhF5doyWs3UAsr3K4I6qtAmlQcZDesFNEHPZAzj8= +github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU= +github.com/cespare/xxhash/v2 v2.1.1/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs= +github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw= +github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGXZJjfX53e64911xZQV5JYwmTeXPW+k8Sc= +github.com/cncf/udpa/go 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+honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4= diff --git a/marketplace/chaincode-go/main.go b/marketplace/chaincode-go/main.go new file mode 100644 index 00000000..8b146e56 --- /dev/null +++ b/marketplace/chaincode-go/main.go @@ -0,0 +1,256 @@ +/* + * SPDX-License-Identifier: Apache-2.0 + */ + +package main + +import ( + "fmt" + "strconv" + "encoding/base64" + "encoding/json" + "github.com/hyperledger/fabric-contract-api-go/contractapi" + "github.com/hyperledger/fabric-contract-api-go/metadata" + "github.com/hyperledger/fabric-chaincode-go/shim" +) + +type MarketplaceContract struct { + contractapi.Contract +} + +type ListingItem struct { + TokenAddr string `json:"tokenAddr"` + Id string `json:"id"` +} + +type Listing struct { + ListingId string `json:"listingId"` + Creator string `json:"creator"` + Price int `json:"price"` + CurrencyAddr string `json:"currencyAddr"` +} + +type ListingCreated struct { + ListingId string `json:"listingId"` + Creator string `json:"creator"` + Price int `json:"price"` + CurrencyAddr string `json:"currencyAddr"` + Nfts []ListingItem `json:"nfts"` + Batches []ListingItem `json:"batches"` + Collections []ListingItem `json:"collections"` +} + +type ListingItemSold struct { + ListingId string `json:"listingId"` + Creator string `json:"creator"` + Price int `json:"price"` + TokenAddr string `json:"tokenAddr"` + CurrencyAddr string `json:"currencyAddr"` + TokenId string `json:"tokenId"` + Buyer string `json:"buyer"` +} + +type ListingCanceled struct { + ListingId string `json:"listingId"` +} + +const listingPrefix = "listing" + +func _readListing(ctx contractapi.TransactionContextInterface, listingId string) (*Listing, error) { + listingKey, err := ctx.GetStub().CreateCompositeKey(listingPrefix, []string{listingId}) + if err != nil { + return nil, fmt.Errorf("failed to CreateCompositeKey %s: %v", listingId, err) + } + + listingBytes, err := ctx.GetStub().GetState(listingKey) + if err != nil { + return nil, fmt.Errorf("failed to GetState %s: %v", listingId, err) + } + + listing := new(Listing) + err = json.Unmarshal(listingBytes, listing) + if err != nil { + return nil, fmt.Errorf("failed to Unmarshal listingBytes: %v", err) + } + + return listing, nil +} + +func (c *MarketplaceContract) List(ctx contractapi.TransactionContextInterface, creator string, listingId string, currencyAddr string, nfts []ListingItem, batches []ListingItem, collections []ListingItem, price int) (*Listing, error) { + + listing := new(Listing) + listing.ListingId = listingId + listing.Creator = creator + listing.Price = price + listing.CurrencyAddr = currencyAddr + + listingKey, err := ctx.GetStub().CreateCompositeKey(listingPrefix, []string{listingId}) + + if err != nil { + return nil, fmt.Errorf("failed to CreateCompositeKey to nftKey: %v", err) + } + + listingBytes, err := json.Marshal(listing) + if err != nil { + return nil, fmt.Errorf("failed to marshal listing: %v", err) + } + + err = ctx.GetStub().PutState(listingKey, listingBytes) + if err != nil { + return nil, fmt.Errorf("failed to PutState listingBytes %s: %v", listingBytes, err) + } + + listingCreated := new(ListingCreated) + listingCreated.ListingId = listingId + listingCreated.Creator = creator + listingCreated.Price = price + listingCreated.CurrencyAddr = currencyAddr + listingCreated.Nfts = nfts + listingCreated.Batches = batches + listingCreated.Collections = collections + + listingCreatedBytes, err := json.Marshal(listingCreated) + if err != nil { + return nil, fmt.Errorf("failed to marshal listingCreatedBytes: %v", err) + } + + err = ctx.GetStub().SetEvent("ListingCreated", listingCreatedBytes) + if err != nil { + return nil, fmt.Errorf("failed to SetEvent listingCreatedBytes %s: %v", listingCreatedBytes, err) + } + + return listing, nil +} + +func (c *MarketplaceContract) CancelListing(ctx contractapi.TransactionContextInterface, listingId string) (bool, error) { + + sender64, err := ctx.GetClientIdentity().GetID() + if err != nil { + return false, fmt.Errorf("failed to GetClientIdentity: %v", err) + } + + senderBytes, err := base64.StdEncoding.DecodeString(sender64) + if err != nil { + return false, fmt.Errorf("failed to DecodeString senderBytes: %v", err) + } + sender := string(senderBytes) + + listing, err := _readListing(ctx, listingId); + if err != nil { + return false, fmt.Errorf("failed to _readListing: %v", err) + } + + if (listing.Creator != sender) { + return false, fmt.Errorf("sender is not owner of listing") + } + + listingKey, err := ctx.GetStub().CreateCompositeKey(listingPrefix, []string{listingId}) + + if err != nil { + return false, fmt.Errorf("failed to CreateCompositeKey to nftKey: %v", err) + } + + err = ctx.GetStub().DelState(listingKey) + if err != nil { + return false, fmt.Errorf("failed to DelState %s: %v", listingKey, err) + } + + listingCanceled := new(ListingCanceled) + listingCanceled.ListingId = listingId + + listingCanceledBytes, err := json.Marshal(listingCanceled) + if err != nil { + return false, fmt.Errorf("failed to marshal listingCanceledBytes: %v", err) + } + + err = ctx.GetStub().SetEvent("ListingCanceled", listingCanceledBytes) + if err != nil { + return false, fmt.Errorf("failed to SetEvent listingCanceledBytes %s: %v", listingCanceledBytes, err) + } + + return true, nil +} + +func (c *MarketplaceContract) Buy(ctx contractapi.TransactionContextInterface, buyer string, listingId string, tokenAddr string, tokenId string) (bool, error) { + + listing, err := _readListing(ctx, listingId); + if err != nil { + return false, fmt.Errorf("failed to _readListing: %v", err) + } + + // payment + stub := ctx.GetStub() + + params := []string{"TransferFrom", buyer, listing.Creator, strconv.Itoa(listing.Price)} + invokeArgs := make([][]byte, len(params)) + + for i, arg := range params { + invokeArgs[i] = []byte(arg) + } + + response := stub.InvokeChaincode(listing.CurrencyAddr, invokeArgs, "firefly") + + if response.Status != shim.OK { + return false, fmt.Errorf("Failed to invoke erc-20 chaincode. Got error: %v %s %s %s", response, buyer, listing.Creator, strconv.Itoa(listing.Price)) + } + + // transfer tokens + tokenTransferParams := []string{"TransferFrom", listing.Creator, buyer, tokenId} + tokenTransferInvokeArgs := make([][]byte, len(tokenTransferParams)) + + for i, arg := range tokenTransferParams { + tokenTransferInvokeArgs[i] = []byte(arg) + } + + tokenTransferResponse := stub.InvokeChaincode(tokenAddr, tokenTransferInvokeArgs, "firefly") + + if tokenTransferResponse.Status != shim.OK { + return false, fmt.Errorf("Failed to invoke erc-721 chaincode. Got error: %s", tokenTransferResponse.Payload) + } + + listingItemSold := new(ListingItemSold) + listingItemSold.ListingId = listingId + listingItemSold.Creator = listing.Creator + listingItemSold.Price = listing.Price + listingItemSold.CurrencyAddr = listing.CurrencyAddr + listingItemSold.TokenAddr = tokenAddr + listingItemSold.Buyer = buyer + listingItemSold.TokenId = tokenId + + listingItemSoldBytes, err := json.Marshal(listingItemSold) + if err != nil { + return false, fmt.Errorf("failed to marshal listingItemSoldBytes: %v", err) + } + + err = ctx.GetStub().SetEvent("ListingItemSold", listingItemSoldBytes) + if err != nil { + return false, fmt.Errorf("failed to SetEvent listingItemSoldBytes %s: %v", listingItemSoldBytes, err) + } + + return true, nil +} + + +func main() { + marketplaceContract := new(MarketplaceContract) + marketplaceContract.Info.Version = "0.0.1" + marketplaceContract.Info.Description = "MarketplaceContract fabric port" + marketplaceContract.Info.License = new(metadata.LicenseMetadata) + marketplaceContract.Info.License.Name = "Apache-2.0" + marketplaceContract.Info.Contact = new(metadata.ContactMetadata) + marketplaceContract.Info.Contact.Name = "Marketplace" + + chaincode, err := contractapi.NewChaincode(marketplaceContract) + chaincode.Info.Title = "Marketplace chaincode" + chaincode.Info.Version = "0.0.1" + + if err != nil { + panic("Could not create chaincode from MarketplaceContract." + err.Error()) + } + + err = chaincode.Start() + + if err != nil { + panic("Failed to start chaincode. " + err.Error()) + } +} diff --git a/token-erc-20/chaincode-go/chaincode/token_contract.go b/token-erc-20/chaincode-go/chaincode/token_contract.go index 836eeeb7..863494f2 100644 --- a/token-erc-20/chaincode-go/chaincode/token_contract.go +++ b/token-erc-20/chaincode-go/chaincode/token_contract.go @@ -6,6 +6,7 @@ import ( "fmt" "log" "strconv" + "encoding/base64" "github.com/hyperledger/fabric-contract-api-go/contractapi" ) @@ -56,11 +57,17 @@ func (s *SmartContract) Mint(ctx contractapi.TransactionContextInterface, amount } // Get ID of submitting client identity - minter, err := ctx.GetClientIdentity().GetID() + minter64, err := ctx.GetClientIdentity().GetID() if err != nil { return fmt.Errorf("failed to get client id: %v", err) } + minterBytes, err := base64.StdEncoding.DecodeString(minter64) + if err != nil { + return fmt.Errorf("failed to DecodeString minter64: %v", err) + } + minter := string(minterBytes) + if amount <= 0 { return fmt.Errorf("mint amount must be a positive integer") } @@ -153,10 +160,16 @@ func (s *SmartContract) Burn(ctx contractapi.TransactionContextInterface, amount } // Get ID of submitting client identity - minter, err := ctx.GetClientIdentity().GetID() - if err != nil { - return fmt.Errorf("failed to get client id: %v", err) - } + minter64, err := ctx.GetClientIdentity().GetID() + if err != nil { + return fmt.Errorf("failed to get minter id: %v", err) + } + + minterBytes, err := base64.StdEncoding.DecodeString(minter64) + if err != nil { + return fmt.Errorf("failed to DecodeString minter64: %v", err) + } + minter := string(minterBytes) if amount <= 0 { return errors.New("burn amount must be a positive integer") @@ -241,11 +254,17 @@ func (s *SmartContract) Transfer(ctx contractapi.TransactionContextInterface, re } // Get ID of submitting client identity - clientID, err := ctx.GetClientIdentity().GetID() + sender64, err := ctx.GetClientIdentity().GetID() if err != nil { return fmt.Errorf("failed to get client id: %v", err) } + senderBytes, err := base64.StdEncoding.DecodeString(sender64) + if err != nil { + return fmt.Errorf("failed to DecodeString sender: %v", err) + } + clientID := string(senderBytes) + err = transferHelper(ctx, clientID, recipient, amount) if err != nil { return fmt.Errorf("failed to transfer: %v", err) @@ -302,18 +321,24 @@ func (s *SmartContract) ClientAccountBalance(ctx contractapi.TransactionContextI return 0, fmt.Errorf("Contract options need to be set before calling any function, call Initialize() to initialize contract") } - // Get ID of submitting client identity - clientID, err := ctx.GetClientIdentity().GetID() - if err != nil { - return 0, fmt.Errorf("failed to get client id: %v", err) - } + clientAccountID64, err := ctx.GetClientIdentity().GetID() + if err != nil { + return 0, fmt.Errorf("failed to GetClientIdentity minter: %v", err) + } - balanceBytes, err := ctx.GetStub().GetState(clientID) + clientAccountIDBytes, err := base64.StdEncoding.DecodeString(clientAccountID64) + if err != nil { + return 0, fmt.Errorf("failed to DecodeString sender: %v", err) + } + + clientAccountID := string(clientAccountIDBytes) + + balanceBytes, err := ctx.GetStub().GetState(clientAccountID) if err != nil { return 0, fmt.Errorf("failed to read from world state: %v", err) } if balanceBytes == nil { - return 0, fmt.Errorf("the account %s does not exist", clientID) + return 0, fmt.Errorf("the account %s does not exist", clientAccountID) } balance, _ := strconv.Atoi(string(balanceBytes)) // Error handling not needed since Itoa() was used when setting the account balance, guaranteeing it was an integer. @@ -336,12 +361,18 @@ func (s *SmartContract) ClientAccountID(ctx contractapi.TransactionContextInterf } // Get ID of submitting client identity - clientAccountID, err := ctx.GetClientIdentity().GetID() + clientAccountID64, err := ctx.GetClientIdentity().GetID() if err != nil { return "", fmt.Errorf("failed to get client id: %v", err) } - return clientAccountID, nil + clientAccountBytes, err := base64.StdEncoding.DecodeString(clientAccountID64) + if err != nil { + return "", fmt.Errorf("failed to DecodeString clientAccount64: %v", err) + } + clientAccount := string(clientAccountBytes) + + return clientAccount, nil } // TotalSupply returns the total token supply @@ -391,11 +422,17 @@ func (s *SmartContract) Approve(ctx contractapi.TransactionContextInterface, spe } // Get ID of submitting client identity - owner, err := ctx.GetClientIdentity().GetID() + owner64, err := ctx.GetClientIdentity().GetID() if err != nil { return fmt.Errorf("failed to get client id: %v", err) } + ownerBytes, err := base64.StdEncoding.DecodeString(owner64) + if err != nil { + return fmt.Errorf("failed to DecodeString minter64: %v", err) + } + owner := string(ownerBytes) + // Create allowanceKey allowanceKey, err := ctx.GetStub().CreateCompositeKey(allowancePrefix, []string{owner, spender}) if err != nil { @@ -476,10 +513,16 @@ func (s *SmartContract) TransferFrom(ctx contractapi.TransactionContextInterface } // Get ID of submitting client identity - spender, err := ctx.GetClientIdentity().GetID() - if err != nil { - return fmt.Errorf("failed to get client id: %v", err) - } + spender64, err := ctx.GetClientIdentity().GetID() + if err != nil { + return fmt.Errorf("failed to get client id: %v", err) + } + + spenderBytes, err := base64.StdEncoding.DecodeString(spender64) + if err != nil { + return fmt.Errorf("failed to DecodeString minter64: %v", err) + } + spender := string(spenderBytes) // Create allowanceKey allowanceKey, err := ctx.GetStub().CreateCompositeKey(allowancePrefix, []string{from, spender}) diff --git a/token-erc-721/chaincode-go/chaincode/erc721-contract.go b/token-erc-721/chaincode-go/chaincode/erc721-contract.go index fa4a5ea7..aa78a263 100644 --- a/token-erc-721/chaincode-go/chaincode/erc721-contract.go +++ b/token-erc-721/chaincode-go/chaincode/erc721-contract.go @@ -175,6 +175,85 @@ func (c *TokenERC721Contract) Approve(ctx contractapi.TransactionContextInterfac return true, nil } +func (c *TokenERC721Contract) SetLock(ctx contractapi.TransactionContextInterface, tokenId string, isLocked bool) (bool, error) { + + // Check if contract has been intilized first + initialized, err := checkInitialized(ctx) + if err != nil { + return false, fmt.Errorf("failed to check if contract is already initialized: %v", err) + } + if !initialized { + return false, fmt.Errorf("Contract options need to be set before calling any function, call Initialize() to initialize contract") + } + + sender64, err := ctx.GetClientIdentity().GetID() + if err != nil { + return false, fmt.Errorf("failed to GetClientIdentity: %v", err) + } + + senderBytes, err := base64.StdEncoding.DecodeString(sender64) + if err != nil { + return false, fmt.Errorf("failed to DecodeString senderBytes: %v", err) + } + sender := string(senderBytes) + + nft, err := _readNFT(ctx, tokenId) + if err != nil { + return false, fmt.Errorf("failed to _readNFT: %v", err) + } + + // Check if the sender is the current owner of the non-fungible token + // or an authorized operator of the current owner + owner := nft.Owner + operatorApproval, err := c.IsApprovedForAll(ctx, owner, sender) + if err != nil { + return false, fmt.Errorf("failed to get IsApprovedForAll: %v", err) + } + if owner != sender && !operatorApproval { + return false, fmt.Errorf("the sender is not the current owner nor an authorized operator") + } + + nft.Locked = isLocked + nftKey, err := ctx.GetStub().CreateCompositeKey(nftPrefix, []string{tokenId}) + if err != nil { + return false, fmt.Errorf("failed to CreateCompositeKey %s: %v", nftKey, err) + } + + nftBytes, err := json.Marshal(nft) + if err != nil { + return false, fmt.Errorf("failed to marshal nftBytes: %v", err) + } + + err = ctx.GetStub().PutState(nftKey, nftBytes) + if err != nil { + return false, fmt.Errorf("failed to PutState for nftKey: %v", err) + } + + lockUnlockEvent := new(LockUnlock) + lockUnlockEvent.Owner = sender + lockUnlockEvent.TokenId = nft.TokenId + + lockUnlockEventBytes, err := json.Marshal(lockUnlockEvent) + if err != nil { + return false, fmt.Errorf("failed to marshal lockUnlockEventBytes: %v", err) + } + + if (nft.Locked) { + err = ctx.GetStub().SetEvent("Lock", lockUnlockEventBytes) + if err != nil { + return false, fmt.Errorf("failed to SetEvent Lock: %v", err) + } + } else { + err = ctx.GetStub().SetEvent("Unlock", lockUnlockEventBytes) + if err != nil { + return false, fmt.Errorf("failed to SetEvent Unlock: %v", err) + } + } + + return true, nil +} + + // SetApprovalForAll enables or disables approval for a third party ("operator") // to manage all the message sender's assets // param {String} operator A client to add to the set of authorized operators @@ -325,6 +404,10 @@ func (c *TokenERC721Contract) TransferFrom(ctx contractapi.TransactionContextInt return false, fmt.Errorf("failed to _readNFT : %v", err) } + if (nft.Locked) { + return false, fmt.Errorf("Token %s is locked", nft.TokenId) + } + owner := nft.Owner operator := nft.Approved operatorApproval, err := c.IsApprovedForAll(ctx, owner, sender) @@ -592,6 +675,7 @@ func (c *TokenERC721Contract) MintWithTokenURI(ctx contractapi.TransactionContex nft.TokenId = tokenId nft.Owner = minter nft.TokenURI = tokenURI + nft.Locked = false nftKey, err := ctx.GetStub().CreateCompositeKey(nftPrefix, []string{tokenId}) if err != nil { @@ -675,6 +759,10 @@ func (c *TokenERC721Contract) Burn(ctx contractapi.TransactionContextInterface, return false, fmt.Errorf("non-fungible token %s is not owned by %s", tokenId, owner) } + if (nft.Locked) { + return false, fmt.Errorf("Token %s is locked", nft.TokenId) + } + // Delete the token nftKey, err := ctx.GetStub().CreateCompositeKey(nftPrefix, []string{tokenId}) if err != nil { @@ -697,20 +785,18 @@ func (c *TokenERC721Contract) Burn(ctx contractapi.TransactionContextInterface, return false, fmt.Errorf("failed to DelState balanceKey %s: %v", balanceKey, err) } - // Emit the Transfer event - transferEvent := new(Transfer) - transferEvent.From = owner - transferEvent.To = "0x0" - transferEvent.TokenId = tokenId + burnEvent := new(Burn) + burnEvent.Owner = owner + burnEvent.TokenId = tokenId - transferEventBytes, err := json.Marshal(transferEvent) + burnEventBytes, err := json.Marshal(burnEvent) if err != nil { - return false, fmt.Errorf("failed to marshal transferEventBytes: %v", err) + return false, fmt.Errorf("failed to marshal burnEventBytes: %v", err) } - err = ctx.GetStub().SetEvent("Transfer", transferEventBytes) + err = ctx.GetStub().SetEvent("Burn", burnEventBytes) if err != nil { - return false, fmt.Errorf("failed to SetEvent transferEventBytes: %v", err) + return false, fmt.Errorf("failed to SetEvent burnEventBytes: %v", err) } return true, nil diff --git a/token-erc-721/chaincode-go/chaincode/erc721.go b/token-erc-721/chaincode-go/chaincode/erc721.go index 5302f4d5..66892669 100644 --- a/token-erc-721/chaincode-go/chaincode/erc721.go +++ b/token-erc-721/chaincode-go/chaincode/erc721.go @@ -10,6 +10,7 @@ type Nft struct { Owner string `json:"owner"` TokenURI string `json:"tokenURI"` Approved string `json:"approved"` + Locked bool `json:"locked"` } type Approval struct { @@ -23,3 +24,13 @@ type Transfer struct { To string `json:"to"` TokenId string `json:"tokenId"` } + +type LockUnlock struct { + Owner string `json:"owner"` + TokenId string `json:"tokenId"` +} + +type Burn struct { + Owner string `json:"owner"` + TokenId string `json:"tokenId"` +}