ERC20 Token

Token ERC20 APIs.

erc20_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	BigDecimal	Token balance of address.

Example

{
    "jsonrpc": "2.0",
    "id": "00456",
    "result": {
        "resultCode": "200",
        "resultMessage": "Success",
        "resultData": {
            "balance": "100.12"
        }
    }
}

erc20_mint

Add token issuance. Only the token owner can do this. (There are tokens for which the mint function is not provided according to the contract.)

Parameters

Name	Type	Description
contractAddress	String	Contract address of token
sender	String	Sender Address (It's must be owner)
amount	BigDecimal	Mint amount of token.
tempKey	String	tempKey for "mint"
hashKey	String	hash(tempKey | secretKey)
signature	String	sign( hash( contractAddress | owner | amount | tempKey | hashKey ) ) by sender's privateKey using signData API
gasPrice	BigDecimal	gasPrice
nonce	BIgInteger	nonce value. If it is null, it will be filled in automatically. If acceleration is needed, use the nonce value generated when performing the transaction and use a higher gasPrice than the previous transaction.

Return Value

Name	Type	Description
transactionId	String	Transaction Id
nonce	BigInteger	nonce Value

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",
            "nonce": 43
        }
    }
}

erc20_burn

Burn the initial supply of token. Only the token owner can do this.

Parameters

Name	Type	Description
contractAddress	String	Contract address of token
sender	String	Sender Address (It's must be owner)
amount	BigDecimal	Burn amount of token.
tempKey	String	tempKey for "burn"
hashKey	String	hash(tempKey | secretKey)
signature	String	sign( hash( contractAddress | owner | amount | tempKey | hashKey ) ) by sender's privateKey using signData API
gasPrice	BigDecimal	gasPrice
nonce	BigInteger	nonce value. If it is null, it will be filled in automatically. If acceleration is needed, use the nonce value generated when performing the transaction and use a higher gasPrice than the previous transaction.

Return Value

Name	Type	Description
transactionId	String	Transaction Id
nonce	BigInteger	nonce value

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",
            "nonce": 32
        }
    }
}

erc20_transfer

Transfer Token from from-address to to-address.

Parameters

Name	Type	Description
contractAddress	String	Contract address of token
sender	String	Sender address
toAddress	String	To address
amount	BigDecimal	Transfer amount.
tempKey	String	tempKey for "transfer"
hashKey	String	hash(tempKey | fromAddress' secretKey)
signature	String	sign( hash( contractAddress | sender | toAddress | amount | tempKey | hashKey ) ) by sender's privateKey using signData API
gasPrice	BigDecimal	gasPrice
nonce	BigInteger	nonce value. If it is null, it will be filled in automatically. If acceleration is needed, use the nonce value generated when performing the transaction and use a higher gasPrice than the previous transaction.

Return Value

Name	Type	Description
transactionId	String	Transaction Id
nonce	BigInteger	nonce value

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",
            "nonce": 32
        }
    }
}

erc20_transferFrom

Transfer Token from from-address to to-address by spender.

Parameters

Name	Type	Description
contractAddress	String	Contract address of token
sender	String	Sender address (spender)
fromAddress	String	From address
toAddress	String	To address
amount	BigDecimal	Transfer amount.
tempKey	String	tempKey for "transfer"
hashKey	String	hash(tempKey | fromAddress' secretKey)
signature	String	sign( hash( contractAddress | sender | fromAddress | toAddress | amount | tempKey | hashKey ) ) by sender's privateKey using signData API
gasPrice	BigDecimal	gasPrice
nonce	BigInteger	nonce value. If it is null, it will be filled in automatically. If acceleration is needed, use the nonce value generated when performing the transaction and use a higher gasPrice than the previous transaction.

Return Value

Name	Type	Description
transactionId	String	Transaction Id
nonce	BigInteger	nonce value

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",
            "nonce": 32
        }
    }
}

erc20_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
amount	BigDecimal	Approve amount.
tempKey	String	tempKey for "approve"
hashKey	String	hash(tempKey | fromAddress' secretKey)
signature	String	sign( hash ( contractAddress | sender | spender | amount | tempKey | hashKey ) ) by sender's privateKey using signData API
gasPrice	BigDecimal	gasPrice
nonce	BingInteger	nonce value. If it is null, it will be filled in automatically. If acceleration is needed, use the nonce value generated when performing the transaction and use a higher gasPrice than the previous transaction.

Return Value

Name	Type	Description
transactionId	String	Transaction Id
nonce	BigInteger	nonce value

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",
            "nonce": 32
        }
    }
}

erc20_getAllowance

Returns an allowed Token amount from owner address to to spender address.

Parameters

Name	Type	Description
contractAddress	String	Contract address of token.
sender	String	Allower address
spender	String	Spender address

Return Value

Name	Type	Description
amount	BigDecimal	Allowed Token amount.

Example

{
    "jsonrpc": "2.0",
    "id": "00456",
    "result": {
        "resultCode": "200",
        "resultMessage": "Success",
        "resultData": {
            "amount": "100.12"
        }
    }
}