The endpoints enable transactions for various blockchain implementations, including EVM and others. It offers endpoints for creating, compiling, sending, decoding, and estimating transaction fees.

This API is part of the Wallet Transact bundles.

Authentication

You can authenticate your request by using your API Key either as a:

Query parameter (?apiKey=<YOUR_API_KEY>)

or

Header (X-API-Key: <YOUR_API_KEY>)

📘
Info:
Refer to the Authenticate Your API Requests page for more details.

Supported Protocols and Networks

Protocol	Network
Avalanche	Mainnet-c Testnet-c
Bitcoin	Mainnet Testnet Testnet4
Bitcoincash	Mainnet Testnet
Cosmos	Mainnet
Ethereum	Mainnet Sepolia Hoodi
Litecoin	Mainnet Testnet
Near	Mainnet
Polkadot	Mainnet Westend Assethub Mainnet Assethub Westend
Polygon	Mainnet Amoy
Solana	Mainnet Testnet Devnet
Stellar	Mainnet Testnet
Tron	Mainnet Nile

API Endpoint Structure

The URL structure for the API endpoints is as follows.

https://svc.blockdaemon.com/tx/v1/{blockchain_id}

Use the Get the Supported Protocol Info - GET /{blockchain_id} endpoint to see which transaction-related endpoints are available for a specific blockchain.

curl --request GET \
     --url https://svc.blockdaemon.com/tx/v1/PROTOCOL-NETWORK< \
     --header 'accept: application/json' \
     --header 'authorization: Bearer YOUR_API_KEY'

Available Endpoints

Endpoint	What's this for?
Create an Unsigned Transaction - `POST /create`	Generates an unsigned transaction that can be signed and broadcasted later.
Derive a Signing Payload - `POST /derive_signing_payload`	Generates a signing payload from an unsigned transaction.
Create an Unsigned Token Transfer Transaction - `POST /create/token`	Creates an unsigned transaction specifically for transferring tokens.
Compile an Unsigned Transaction - `POST /compile`	Converts an unsigned transaction into a format ready for signing.
Compile and Broadcast an Unsigned Transaction - `POST /compile_and_send`	Compiles an unsigned transaction, signs it, and broadcasts it to the network.
Submit a Signed Transaction - `POST /send`	Sends a signed transaction to the blockchain network for execution.
Verify a Transaction - `POST /verify`	Checks if a given transaction is valid and correctly formatted.
Decode a Transaction - `POST /decode`	Decodes a raw transaction to a human-readable format.
Get the Fee Estimation - `POST /estimate_fee`	Estimates the network fees required for a transaction.