ERC721 Token

Token ERC721 APIs support HTTP protocol. It uses erc721_ namespace.

erc721_create

Create an ERC721 NFT.

Parameters

Name	Type	Description
sender	String	Sender address
name	String	Token name Max length : 30
symbol	String	Token symbol. Consists of only alphanumeric characters and can contain up to 4 characters. Max length : 4
maxTotalSupply	BigInteger	Max total supply amount of token
tempKey	String	tempKey for "create"
hashKey	String	hash(tempKey | secretKey)
signature	String	sign( hash ( sender | name | symbol | maxTotalSupply | tempKey | hashKey ) ) by sender's privateKey using signData API

In order to perform a transaction, the owner must have a balance of at least 4 GFEI for gas cost.

Return Value

Name	Type	Description
transactionId	String	Transaction Id
contractAddress	String	Token contract address

A transactionId is returned, but that doesn't mean it has been added to the Block yet. You should check that the status is 1 by using net_getTransactionStatus.

Example

{
    "jsonrpc": "2.0",
    "id": "00456",
    "result": {
        "resultCode": "200",
        "resultMessage": "Success",
        "resultData": {
            "transactionId": "0xf7d37be47ce8b563b07aa5e81e17e9722bab2e71374d970a558b45c0ed51df7b"
        }
    }
}

erc721_getBalance

Return an address Token balance.

Parameters

Name	Type	Description
contractAddress	String	Contract address of token.
address	String	Address

Return Value

Name	Type	Description
balance	BigInteger	Token balance of address.

Example

{
    "jsonrpc": "2.0",
    "id": "00456",
    "result": {
        "resultCode": "200",
        "resultMessage": "Success",
        "resultData": {
            "balance": "10"
        }
    }
}

erc721_getMintedTokenId

Return a minted tokenId.

Parameters

Name	Type	Description
transactionId	String	TransactionId of erc721_mint.

Return Value

Name	Type	Description
tokenId	BigInteger	minted tokenId. If it is an error, this is null .

Example

{
    "jsonrpc": "2.0",
    "id": "00456",
    "result": {
        "resultCode": "200",
        "resultMessage": "Success",
        "resultData": {
            "tokenId": "1"
        }
    }
}

erc721_mint

Create new token with uri data. Only the token owner can do this..

Parameters

Name	Type	Description
contractAddress	String	Contract address of token
sender	String	Address
uri	String	The uri data to store in the token. Max length : 100
commet	String	Comment Max length : 200
tempKey	String	tempKey for "mint"
hashKey	String	hash(tempKey | secretKey)
signature	String	sign( hash ( contractAddress | sender | uri | tempKey | hashKey ) ) by owner's privateKey using signData API

In order to perform a transaction, the owner must have a balance of at least 100 MFEI for gas cost.

Return Value

Name	Type	Description
transactionId	String	Transaction Id

A transactionId is returned, but that doesn't mean it has been added to the Block yet. You should check that the status is 1 by using net_getTransactionStatus.

The generated tokenId can be checked using erc721_getMintedTokenId API.

Example

{
    "jsonrpc": "2.0",
    "id": "00456",
    "result": {
        "resultCode": "200",
        "resultMessage": "Success",
        "resultData": {
            "transactionId": "0xf7d37be47ce8b563b07aa5e81e17e9722bab2e71374d970a558b45c0ed51df7b"
        }
    }
}

erc721_getURI

Returns an owner and uri data of tokenId.

Parameters

Name	Type	Description
contractAddress	String	Contract address of token
address	String	Address
tokenId	BigInteger	Token Id

Return Value

Name	Type	Description
owner	String	Owner's address
uri	String	The uri data of token.

Example

{
    "jsonrpc": "2.0",
    "id": "00456",
    "result": {
        "resultCode": "200",
        "resultMessage": "Success",
        "resultData": {
            "owner":"0x666cf9aed17a9dfb4ae91b80789dd99803568b11",
            "uri":"0xaff42527a42d60ca3fb548fd799b01e6f57e309cd12c226881487266cd5dd2c9"
        }
    }
}

erc721_transfer

Transfer NFT owner from from-address to to-address.

Parameters

Name	Type	Description
contractAddress	String	Contract address of token
sender	String	Sender address
toAddress	String	To address
tokenId	BigInteger	Token Id
comment	String	Comment Max length : 200
tempKey	String	tempKey for "transfer"
hashKey	String	hash(tempKey | fromAddress' secretKey)
signature	String	sign( hash ( contractAddress | sender | toAddress | tokenId | tempKey | hashKey ) ) by formAddress's privateKey using signData API

In order to perform a transaction, the from address must have a balance of at least 100 MFEI for gas cost.

Return Value

Name	Type	Description
transactionId	String	Transaction Id

A transactionId is returned, but that doesn't mean it has been added to the Block yet. You should check that the status is 1 by using net_getTransactionStatus.

Example

{
    "jsonrpc": "2.0",
    "id": "00456",
    "result": {
        "resultCode": "200",
        "resultMessage": "Success",
        "resultData": {
            "transactionId": "0xf7d37be47ce8b563b07aa5e81e17e9722bab2e71374d970a558b45c0ed51df7b"
        }
    }
}

erc721_transferFrom

Transfer NFT owner from from-address to to-address by spender address.

Parameters

Name	Type	Description
contractAddress	String	Contract address of token
sender	String	Sender address
fromAddress	String	From address
toAddress	String	To address
tokenId	BigInteger	Token Id
comment	String	Comment Max length : 200
tempKey	String	tempKey for "transfer"
hashKey	String	hash(tempKey | fromAddress' secretKey)
signature	String	sign( hash ( contractAddress | sender | fromAddress | toAddress | tokenId | tempKey | hashKey ) ) by address's privateKey using signData API

In order to perform a transaction, the spender address must have a balance of at least 100 MFEI for gas cost.

Return Value

Name	Type	Description
transactionId	String	Transaction Id

A transactionId is returned, but that doesn't mean it has been added to the Block yet. You should check that the status is 1 by using net_getTransactionStatus.

Example

{
    "jsonrpc": "2.0",
    "id": "00456",
    "result": {
        "resultCode": "200",
        "resultMessage": "Success",
        "resultData": {
            "transactionId": "0xf7d37be47ce8b563b07aa5e81e17e9722bab2e71374d970a558b45c0ed51df7b"
        }
    }
}

erc721_approve

Approve token from owner-address to spender-address.

Parameters

Name	Type	Description
contractAddress	String	Contract address of token
sender	String	Sender address
spender	String	Spender address
tokenId	BigInteger	Token Id
comment	String	Comment Max length : 200
tempKey	String	tempKey for "approve"
hashKey	String	hash(tempKey | fromAddress' secretKey)
signature	String	sign( hash ( contractAddress | sender | spender | tokenId | tempKey | hashKey ) ) by formAddress's privateKey using signData API

In order to perform a transaction, the from address must have a balance of at least 100 MFEI for gas cost.

Return Value

Name	Type	Description
transactionId	String	Transaction Id

A transactionId is returned, but that doesn't mean it has been added to the Block yet. You should check that the status is 1 by using net_getTransactionStatus.

Example

{
    "jsonrpc": "2.0",
    "id": "00456",
    "result": {
        "resultCode": "200",
        "resultMessage": "Success",
        "resultData": {
            "transactionId": "0xf7d37be47ce8b563b07aa5e81e17e9722bab2e71374d970a558b45c0ed51df7b"
        }
    }
}

erc721_getApproved

Returns an allowed token spender from owner address.

Parameters

Name	Type	Description
contractAddress	String	Contract address of token.
address	String	Owner address
tokenId	BigInteger	Token Id

Return Value

Name	Type	Description
address	String	Spender's address

Example

{
    "jsonrpc": "2.0",
    "id": "00456",
    "result": {
        "resultCode": "200",
        "resultMessage": "Success",
        "resultData": {
            "address": "0x666cf9aed17a9dfb4ae91b80789dd99803568b11"
        }
    }
}