TRON: Generate Signature

Request body

Property	Type	Description
kind*	String	For Tron, always Transaction
transaction*	Hex String	The unsigned hex encoded transaction as shown below
externalId	(Optional) String	A unique ID from your system. It can be leveraged to be used as an idempotency key (read more here)

Sample request body

{
  "kind": "Transaction",
  "transaction": "0x0a83010a0228222208b142ad939b228d784090a7eaa9cf315a65080112610a2d747970652e676f6f676c65617069732e636f6d2f70726f746f636f6c2e5472616e73666572436f6e747261637412300a15419d31b91d72b58d7c8c02a7124410e168989f372d12154102a69d5d85c05864dc6fd74f57db3fa37aff7b94180170b0d2e6a9cf31"
}

200 response example

{
  "id": "sig-19u01-g60tf-xxxxxxxxxxxxxxxx",
  "walletId": "wa-174tk-m918i-xxxxxxxxxxxxxxxx",
  "network": "TronNile",
  "requester": {
    "userId": "us-3v1ag-v6b36-xxxxxxxxxxxxxxxx",
    "tokenId": "to-7mkkj-c831n-xxxxxxxxxxxxxxxx",
    "appId": "ap-341e6-12nj6-xxxxxxxxxxxxxxxx"
  },
  "requestBody": {
    "kind": "Transaction",
    "transaction": "0x0a83010a0228222208b142ad939b228d784090a7eaa9cf315a65080112610a2d747970652e676f6f676c65617069732e636f6d2f70726f746f636f6c2e5472616e73666572436f6e747261637412300a15419d31b91d72b58d7c8c02a7124410e168989f372d12154102a69d5d85c05864dc6fd74f57db3fa37aff7b94180170b0d2e6a9cf31"
  },
  "status": "Signed",
  "signature": {
    "r": "0xa7c36732ea21596a533ad44e1d2f5eff72ae3d178225a0cdb9869ff3954a3898",
    "s": "0x37b7f22f119801ce5fe1723f3a397254ba8f968ba5ad63e66404caf750666968",
    "recid": 1,
    "encoded": "0xa7c36732ea21596a533ad44e1d2f5eff72ae3d178225a0cdb9869ff3954a389837b7f22f119801ce5fe1723f3a397254ba8f968ba5ad63e66404caf7506669681c"
  },
  "signedData": "0x0a83010a0227f52208511ce7ed0476508040c8d9e1a9cf315a65080112610a2d747970652e676f6f676c65617069732e636f6d2f70726f746f636f6c2e5472616e73666572436f6e747261637412300a15419d31b91d72b58d7c8c02a7124410e168989f372d12154102a69d5d85c05864dc6fd74f57db3fa37aff7b94180170e884dea9cf311241a7c36732ea21596a533ad44e1d2f5eff72ae3d178225a0cdb9869ff3954a389837b7f22f119801ce5fe1723f3a397254ba8f968ba5ad63e66404caf7506669681c",
  "dateRequested": "2024-01-10T21:13:38.186Z",
  "dateSigned": "2024-01-10T21:13:38.348Z"
}

Typescript Example with TronWeb

First install Tronweb. You can find the full documentation here: https://tronweb.network/docu/docs/intro/

Tron requires the transaction to be serialized using the protobuf format before it can be broadcast. As it's not trivial, you can use the functions exposed in Tronweb to generate the transaction in the right format (see below) and then sign via the Dfns TypeScript SDK:

const TronWeb = require('tronweb')

const walletId = 'wa-6lbfv-9esgj-xxxxxxxxxxxxxxxx'
const wallet = await dfnsClient.wallets.getWallet({ walletId })

const transaction = await tronWeb.transactionBuilder.sendTrx('TADDx31pdCFfp3XrYxp6fQGbRxriYFLTrx', 1000, wallet.address)

const txPb = TronWeb.utils.transaction.txJsonToPb(transaction)

const res = await dfnsClient.wallets.generateSignature({
  walletId,
  body: {
    kind: 'Transaction',
    transaction: `0x${TronWeb.utils.bytes.byteArray2hexStr(txPb.serializeBinary())}`,
  },
})