# ERC20 Token ## Endpoint > **Real Server :** [**https://api.lmtls.io/v1/chain/erc20**](https://api.lmtls.io/v1/chain/erc20) > > **Test Server :** [**https://test-api.lmtls.io/v1/chain/erc20**](https://test-api.lmtls.io/v1/chain/erc20) ### mint Add token issuance. 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 | 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 | {% hint style="info" %} 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. {% endhint %} #### Example ```json { "jsonrpc": "2.0", "id": "00456", "result": { "resultCode": "200", "resultMessage": "Success", "resultData": { "transactionId": "0xf7d37be47ce8b563b07aa5e81e17e9722...", "nonce": 43 } } } ``` ### 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 | {% hint style="info" %} 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. {% endhint %} #### Example ```json { "jsonrpc": "2.0", "id": "00456", "result": { "resultCode": "200", "resultMessage": "Success", "resultData": { "transactionId": "0xf7d37be47ce8b563b07aa5e81e17e9722bab2...", "nonce": 32 } } } ``` ### 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 ```json { "jsonrpc": "2.0", "id": "00456", "result": { "resultCode": "200", "resultMessage": "Success", "resultData": { "balance": "100.12" } } } ``` ### 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 | {% hint style="info" %} 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. {% endhint %} #### Example ```json { "jsonrpc": "2.0", "id": "00456", "result": { "resultCode": "200", "resultMessage": "Success", "resultData": { "transactionId": "0xf7d37be47ce8b563b07aa5e81e17e972...", "nonce": 32 } } } ``` ### 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 | {% hint style="info" %} 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. {% endhint %} #### Example ```json { "jsonrpc": "2.0", "id": "00456", "result": { "resultCode": "200", "resultMessage": "Success", "resultData": { "transactionId": "0xf7d37be47ce8b563b07aa5e81e17e9722b...", "nonce": 32 } } } ``` ### 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 | {% hint style="info" %} 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. {% endhint %} #### Example ```json { "jsonrpc": "2.0", "id": "00456", "result": { "resultCode": "200", "resultMessage": "Success", "resultData": { "transactionId": "0xf7d37be47ce8b563b07aa5e81e17e9722bab2...", "nonce": 32 } } } ``` ### getAllowance Returns an allowed Token amount from owner address to to spender address. #### Parameters | Name | Type | Description | | --------------- | ------ | -------------------------- | | contractAddress | String | Contract address of token. | | address | String | Allower address | | spender | String | Spender address | #### Return Value | Name | Type | Description | | ------ | ---------- | --------------------- | | amount | BigDecimal | Allowed Token amount. | #### Example ```json { "jsonrpc": "2.0", "id": "00456", "result": { "resultCode": "200", "resultMessage": "Success", "resultData": { "amount": "100.12" } } } ```