BLblockdaemon
fungibletoken

Convert Wrap Token to Base Token

Enables users to convert wrapped ERC-20 tokens back to their underlying base tokens. For example, it allows for the conversion of wrapped staked Ethereum (wstETH) back to its base version (stETH). This unwrapping process is essential for users who need to access the native properties of a token for activities that require the base token format.

💡 Compute Unit Value: 145 (Fixed)

post/defi/v1/fungibletoken/convertwraptokentobasetoken

Request

  • Base URL
    https://svc.blockdaemon.com
  • URL
    https://svc.blockdaemon.com/defi/v1/fungibletoken/convertwraptokentobasetoken
  • Auth
    API key in header X-API-Key

Request body

fromstring required

Blockchain address of the sender. For EVM chains, use a checksummed hex address (e.g., 0xABCDEF...). This address must hold sufficient balance and will sign the transaction.

tokenAddressstring required

Address of the token.

amountstring required

Number of tokens, specified in the token's smallest denomination (base units). Do not send human-readable decimal values. Examples: 1 WETH (18 decimals) = "1000000000000000000"; 1 USDC (6 decimals) = "1000000".

gasstring

Maximum number of gas units to allocate for the transaction, as an integer string (e.g., '200000'). If omitted, gas is estimated automatically. Note: this is gas units, not wei or gwei.

chainId'1' | '56' | '43114' | '137' | '250' | '10' | '11155420' | '42161' | '421614' | '25' | '338' | '84532' | '8453' | '43113' | '97' | '80002' | '300' | '324' | '5000' | '5003' | '8217' | '1001'

The unique ID to direct queries or transactions to the correct blockchain. Find more here.

chainSymbolstring

The abbreviated chain name for queries or transactions.

gasPrioritystring

Specifies the priority level for gas fees (e.g., 'low', 'medium', or 'high'), which influences the transaction speed and cost.

enableFeeboolean

Flag to include a basis points fee transaction alongside the main transaction when set to true.

simulateboolean

When true, dry-runs the transaction batch via eth_simulateV1 and returns a simulate field with status and error on each transaction.

Example request

{
  "from": "0xdAe2F6EdDdA6fb4fb60cc02633DE27e2b431B402",
  "tokenAddress": "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48",
  "amount": "1000000000000000000",
  "gas": "100000",
  "chainId": "1",
  "chainSymbol": "ETH",
  "gasPriority": "low",
  "enableFee": false,
  "simulate": false
}

Response

Successful response

statusinteger
msgstring
dataobject

Example response

{
  "status": 200,
  "msg": "success",
  "data": {
    "chainId": "1",
    "from": "0x63056E00436Da25BcF48A40dfBbDcc7089351006",
    "to": "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2",
    "value": "0",
    "gas": "2307200",
    "data": "0x2e1a7d4d0000000000000000000000000000000000000000000000000000000000000005",
    "referenceId": "e911c9db36b54dfe889f10875af33fd4"
  }
}

Changes

No recorded changes to this operation across all 1 revision of this API.