sign - XRPL

Example code for the sign JSON RPC method. Complete guide to using sign JSON-RPC in the GetBlock Web3 documentation.

This method takes a transaction in JSON format and a secret value, and returns a signed binary representation of the transaction. This method is admin-only on public servers.

This method is not available on public RPC endpoints. Use local signing with xrpl.js or xrpl-py instead.

Parameters

Parameter	Type	Required	Description
tx_json	object	Yes	Transaction to sign
secret	string	No	Account secret
seed	string	No	Account seed
seed_hex	string	No	Seed in hex
passphrase	string	No	Passphrase
key_type	string	No	Key algorithm
offline	boolean	No	Offline mode
build_path	boolean	No	Build payment paths
fee_mult_max	number	No	Fee multiplier
fee_div_max	number	No	Fee divisor

Request Example

cURL

curl --location --request POST 'https://xrp.getblock.io/mainnet/' \
--header 'x-api-key: YOUR-API-KEY' \
--header 'Content-Type: application/json' \
--data-raw '{
    "jsonrpc": "2.0",
    "method": "sign",
    "params": [{
        "tx_json": {
            "TransactionType": "Payment",
            "Account": "rN7n7otQDd6FczFgLdSqtcsAUxDkw6fzRH",
            "Destination": "ra5nK24KXen9AHvsdFTKHSANinZseWnPcX",
            "Amount": "1000000"
        },
        "secret": "s..."
    }],
    "id": "getblock.io"
}'

JavaScript (Axios)

Python

Rust

Response Example

{
    "result": "null",
    "id": "getblock.io",
    "status_code": 405,
    "message": "Method not allowed"
}

Response Parameters

Field	Type	Description
tx_blob	string	Signed transaction hex
tx_json	object	Transaction JSON
hash	string	Transaction hash

Use Cases

• Transaction signing (admin only)

• Development environments

• Private nodes

Recommended: Local Signing

xrpl.js

const xrpl = require('xrpl');

async function signAndSubmit() {
    const client = new xrpl.Client('wss://xrplcluster.com');
    await client.connect();
    
    const wallet = xrpl.Wallet.fromSeed('s...');
    
    const payment = {
        TransactionType: 'Payment',
        Account: wallet.address,
        Destination: 'ra5nK24KXen9AHvsdFTKHSANinZseWnPcX',
        Amount: '1000000'
    };
    
    // Local signing
    const prepared = await client.autofill(payment);
    const signed = wallet.sign(prepared);
    
    console.log('Signed blob:', signed.tx_blob);
    
    // Submit
    const result = await client.submitAndWait(signed.tx_blob);
    console.log('Result:', result);
    
    await client.disconnect();
}

signAndSubmit();

xrpl-py