Sending transactions

Etherlink supports the standard Ethereum eth_call and eth_sendRawTransaction RPC endpoints for calling smart contracts and sending transactions.

• For a list of endpoints that Etherlink supports, see Ethereum endpoint support
• For more information about the endpoints on this page, see the reference for the Ethereum JSON-RPC API.

The following examples use the public Etherlink RPC endpoints listed in Network information, which are rate-limited. If you need to make requests in a production environment, run your own EVM node as described in Running an Etherlink EVM node and send the requests to it.

Versions of the EVM node before 0.25 had an issue with gas price estimation. As intended by the EVM specification, the node's implementation of the eth_gasPrice endpoint provides the current gas price. If a wallet uses that information to calculate the cost of a transaction and the gas price goes up, the wallet might not include enough of a transaction fee. In this case, the sequencer silently rejects the transaction.

Starting with version 0.25, the EVM node's implementation of the eth_gasPrice endpoint includes an increased safety margin to help ensure that the transaction fee is sufficient. However, wallets may still not include a high enough transaction fee if the gas price increases rapidly or if they do not check the gas price often enough. For greater control, wallets and dApps can call the eth_getBlockByNumber endpoint, which includes the base fee for transactions in the baseFeePerGas field.

If you are using an earlier version of the EVM node, you can increase the transaction fee to ensure that the sequencer will accept your transaction. Because the sequencer rejects these transactions silently, wallets may resubmit the transaction automatically, still with insufficient transaction fees. Most wallets periodically check the status of submitted transactions via the eth_getTransactionByHash and eth_getTransactionReceipt endpoints and update their information to show that they have failed, but it can take time before the wallet shows that the transaction has failed.

If the gas price drops, the sequencer may eventually accept the transaction, but the better solution is to use the wallet's "speed up" function (available in most popular supported wallets), and increase the maximum base gas fee.

Calling read-only entrypoints

You can use the eth_call endpoint to call read-only smart contract functions, which does not require you to create a transaction. For example, this command calls the ERC-20 contract at the address 0xCda9B8eD25E465f24C26Ad8fF5E1f05661Df50B2 and gets the balance of tokens for the address 0x45Ff91b4bF16aC9907CF4A11436f9Ce61BE0650d.

curl --request POST \
     --url https://node.ghostnet.etherlink.com \
     --header 'accept: application/json' \
     --header 'content-type: application/json' \
     --data '
{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "eth_call",
  "params": [
    {
      "to": "0xCda9B8eD25E465f24C26Ad8fF5E1f05661Df50B2",
      "data": "0x70a0823100000000000000000000000045Ff91b4bF16aC9907CF4A11436f9Ce61BE0650d"
    }
  ]
}
'

In this case, the to parameter is the address of the contract and the data parameter is assembled from the hash of the balanceOf() function, 24 zeroes for padding, and the address of the account minus its 0x prefix. For more information about assembling the data parameter, see the Ethereum ABI specification: https://docs.soliditylang.org/en/v0.7.0/abi-spec.html.

The response includes the number of tokens that the account has, in hexadecimal format:

{
  "jsonrpc":"2.0",
  "result":"0x0000000000000000000000000000000000000000000000000000000000000005",
  "id":1
}

Similarly, you can use ethers.js to get information from smart contracts. This example calls two read-only entrypoints on an ERC-20 contract:

const { ethers } = require("ethers");

const fullABI = []; // Add complete ABI here

// Define the provider by its RPC address
const provider = new ethers.JsonRpcProvider("https://node.ghostnet.etherlink.com");

// Sender's private key
const privateKey = process.env.ETHERLINK_PRIVATE_KEY;
const wallet = new ethers.Wallet(privateKey, provider);

// ERC-20 contract
const contractAddress = "0xaE96b26F0F9FD52ddd07227E0B73dFc58a1531Ec";

const acct1 = "0x45Ff91b4bF16aC9907CF4A11436f9Ce61BE0650d";
const acct2 = "0xaE96b26F0F9FD52ddd07227E0B73dFc58a1531Ec";
const accounts = [
  { name: "Account 1", address: acct1 },
  { name: "Account 2", address: acct2 },
];

async function getBalances() {

  const tokenContract = new ethers.Contract(contractAddress, fullABI, wallet);

  await Promise.all(accounts.map(async ({ name, address }) => {
    // Call balanceOf entrypoint
    const rawBalance = await tokenContract.balanceOf(address);
    // Call decimals entrypoint
    const decimals = await tokenContract.decimals();
    const formattedBalance = ethers.formatUnits(rawBalance, decimals);
    console.log(name, "has", formattedBalance, "tokens.");
  }));
}

getBalances();

The output includes information about the tokens that the specified accounts own:

Account 1 has 10.0 tokens.
Account 2 has 6.0 tokens.

Sending XTZ

To send a XTZ in a transaction, you can call the eth_sendRawTransaction RPC endpoint with a signed transaction. Etherlink does not support the eth_sendTransaction endpoint.

You must sign the data for the transaction and pass it as the data parameter, as in this example:

curl --request POST \
     --url https://node.ghostnet.etherlink.com \
     --header 'accept: application/json' \
     --header 'content-type: application/json' \
     --data '
{
  "id": 1,
  "jsonrpc": "2.0",
  "params": [
    "0x88a747dbc7f84e8416dc4be31ddef0"
  ],
  "method": "eth_sendRawTransaction"
}
'

To sign the transaction data, most applications use a library such as ethers.js. For example, this JavaScript program signs a transaction that sends 0.1 XTZ to an account and sends it to the network:

const { ethers } = require("ethers");

// Define the provider by its RPC address
const provider = new ethers.JsonRpcProvider("https://node.ghostnet.etherlink.com");

// Sender's private key
const privateKey = process.env.ETHERLINK_PRIVATE_KEY;
const wallet = new ethers.Wallet(privateKey, provider);

async function sendTransaction() {

  // Create the transaction
  const estimateTx = {
    to: "0x46899d4FA5Ba90E3ef3B7aE8aae053C662c1Ca1d",
    value: ethers.parseEther("0.1"), // Sending 0.1 XTZ
    gasLimit: 21000, // Replace with an estimate later
    maxFeePerGas: ethers.parseUnits("1", "gwei"), // Limit transaction to gas price of 1 gwei
    nonce: await provider.getTransactionCount(wallet.address, "latest"),
    chainId: (await provider.getNetwork()).chainId.toString(),
  };

  // Estimate the gas
  const estimatedGas = await provider.estimateGas(estimateTx);

  // Update the transaction with the estimated gas
  const tx = { ...estimateTx, gasLimit: estimatedGas };

  // Sign the transaction
  const signedTx = await wallet.signTransaction(tx);
  console.log("Signed Transaction:", signedTx);

  // Send the transaction
  const txResponse = await provider.broadcastTransaction(signedTx);
  console.log("Transaction Hash:", txResponse.hash);
}

sendTransaction();

The previous example uses ethers.js methods for getting the nonce, estimated gas, and chain ID. You can also use the equivalent RPC endpoints eth_getTransactionCount, eth_estimateGas, and net_version. For example, if you use eth_getGasPrice and it returns 0x3b9aca00, you can estimate the gas for the transaction with this command:

curl --request POST \
     --url https://node.ghostnet.etherlink.com \
     --header 'accept: application/json' \
     --header 'content-type: application/json' \
     --data '
{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "eth_estimateGas",
  "params": [
    {
      "to": "0x46899d4FA5Ba90E3ef3B7aE8aae053C662c1Ca1d",
      "gas": "0x0",
      "gasPrice": "0x3b9aca00",
      "value": "0xde0b6b3a7640000",
      "data": "0x"
    }
  ]
}
'

The response is the estimated transaction gas usage in hexadecimal format, as in this example:

{
  "jsonrpc": "2.0",
  "result": "0x98496",
  "id": 1
}

You can multiply the estimated gas usage by the current gas price to estimate the total fee. For more information, see Estimating fees.

Calling smart contracts

Calling an Etherlink smart contract is just like calling any other EVM smart contract. For example, this Solidity contract stores an integer and lets callers change it:

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;
contract SimpleStorage {
  uint storedData;

  function set(uint x) public {
    storedData = x;
  }

  function get() public view returns (uint) {
    return storedData;
  }
}

This program uses ethers.js to call the deployed contract:

const { ethers } = require("ethers");

const fullABI = [{"inputs":[],"name":"get","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"x","type":"uint256"}],"name":"set","outputs":[],"stateMutability":"nonpayable","type":"function"}];

// Define the provider by its RPC address
const provider = new ethers.JsonRpcProvider("https://node.ghostnet.etherlink.com");

// Sender's private key
const privateKey = process.env.ETHERLINK_PRIVATE_KEY;
const wallet = new ethers.Wallet(privateKey, provider);

const contractAddress = "0x3D3402f42Fb1ef5Cd643a458A4059E0055d48F9e";
const simpleContract = new ethers.Contract(contractAddress, fullABI, wallet);

const getValue = async () => {
  console.log("Value:", await simpleContract.get());
}

async function sendTransaction() {

  // Send the transaction
  const simpleTransaction = await simpleContract.set(5);
  console.log("Transaction Hash:", simpleTransaction.hash);

  // Wait for the transaction to be confirmed
  await simpleTransaction.wait();
  console.log("Transaction Confirmed!");
}

const run = async () => {
  await getValue();
  await sendTransaction();
  await getValue();
}

run();

Transferring ERC-20 tokens

To transfer ERC-20 tokens, you can use the standard transfer entrypoint, as in this example:

const { ethers } = require("ethers");

// Define the provider by its RPC address
const provider = new ethers.JsonRpcProvider("https://node.ghostnet.etherlink.com");

// Sender's private key
const privateKey = process.env.ETHERLINK_PRIVATE_KEY;
const wallet = new ethers.Wallet(privateKey, provider);

async function sendTransaction() {

  const contractAddress = "0xaE96b26F0F9FD52ddd07227E0B73dFc58a1531Ec";
  // Standard transfer ABI for ERC-20 contracts
  const erc20Abi = [
    "function transfer(address to, uint256 amount) public returns (bool)"
  ];
  const tokenContract = new ethers.Contract(contractAddress, erc20Abi, wallet);

  const targetAddress = "0x46899d4FA5Ba90E3ef3B7aE8aae053C662c1Ca1d";

  const amountToTransfer = ethers.parseUnits("1", 18);

  // Send the transaction
  const ercTx = await tokenContract.transfer(targetAddress, amountToTransfer);
  console.log("Transaction Hash:", ercTx.hash);

  // Wait for the transaction to be confirmed
  await ercTx.wait();
  console.log("Transaction Confirmed!");
}

sendTransaction();

If you have the full ABI for the contract you can use other entrypoints to do things like get the account's current balance and the number of decimals that the account uses in its ledger of tokens, as in this example:

const { ethers } = require("ethers");

const fullABI = []; // Add complete ABI here

// Define the provider by its RPC address
const provider = new ethers.JsonRpcProvider("https://node.ghostnet.etherlink.com");

// Sender's private key
const privateKey = process.env.ETHERLINK_PRIVATE_KEY;
const wallet = new ethers.Wallet(privateKey, provider);

async function sendTransaction() {

  const contractAddress = "0xaE96b26F0F9FD52ddd07227E0B73dFc58a1531Ec";
  const tokenContract = new ethers.Contract(contractAddress, erc20Abi, wallet);

  const targetAddress = "0x46899d4FA5Ba90E3ef3B7aE8aae053C662c1Ca1d";

  const rawBalance = await tokenContract.balanceOf(wallet.address);

  // Get token decimals and format balance
  const decimals = await tokenContract.decimals();
  const formattedBalance = ethers.formatUnits(rawBalance, decimals);

  console.log("Account has", formattedBalance, "tokens.");

  // Transfer 1 token, formatted for number of decimals the token uses
  const amountToTransfer = ethers.parseUnits("1", decimals);

  // Send the transaction
  const ercTx = await tokenContract.transfer(targetAddress, amountToTransfer);
  console.log("Transaction Hash:", ercTx.hash);

  // Wait for the transaction to be confirmed
  await ercTx.wait();
  console.log("Transaction Confirmed!");

  // Check balance after the transaction
  const updatedBalance = await tokenContract.balanceOf(wallet.address);
  const formattedUpdatedBalance = ethers.formatUnits(updatedBalance, decimals);
  console.log("Account now has", formattedUpdatedBalance, "tokens remaining.");
}

sendTransaction();

Getting event logs

Etherlink does not support listening for smart contract events with endpoints such as eth_newFilter and eth_getFilterChanges. You can't use the standard ethers.js contract.on or contract.addListener functions to add a listener to a contract because they use these entrypoints.

To get updates about activity on Etherlink via WebSockets, see Subscribing to events.

You can look up event logs with the eth_getLogs endpoint, which accepts different filters. For example, this command returns the event logs from the specified contract from block 18465925 to the current state:

curl --request POST \
  --url https://node.ghostnet.etherlink.com \
  --header 'accept: application/json' \
  --header 'content-type: application/json' \
  --data '{"jsonrpc":"2.0","method":"eth_getLogs","params":[{"fromBlock":"18465925", "toBlock":"latest", "address": "0xaE96b26F0F9FD52ddd07227E0B73dFc58a1531Ec"}],"id":1}'

The response includes information about the matching events:

{
  "jsonrpc": "2.0",
  "result": [
    {
      "address": "0xae96b26f0f9fd52ddd07227e0b73dfc58a1531ec",
      "topics": [
        "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",
        "0x00000000000000000000000045ff91b4bf16ac9907cf4a11436f9ce61be0650d",
        "0x000000000000000000000000ae96b26f0f9fd52ddd07227e0b73dfc58a1531ec"
      ],
      "data": "0x0000000000000000000000000000000000000000000000000de0b6b3a7640000",
      "blockNumber": "0x119c486",
      "transactionHash": "0x3802692bf4ed0418bedc4d919f8ef5295fce9efc4b7223ebc91d04fadd3a8b65",
      "transactionIndex": "0x0",
      "blockHash": "0xf14d24040b30aa3b463687c2a1746a0aac80a145474d34789a8b7db2619d60ae",
      "logIndex": "0x0",
      "removed": false
    },
    {
      "address": "0xae96b26f0f9fd52ddd07227e0b73dfc58a1531ec",
      "topics": [
        "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",
        "0x00000000000000000000000045ff91b4bf16ac9907cf4a11436f9ce61be0650d",
        "0x000000000000000000000000ae96b26f0f9fd52ddd07227e0b73dfc58a1531ec"
      ],
      "data": "0x0000000000000000000000000000000000000000000000000de0b6b3a7640000",
      "blockNumber": "0x119c547",
      "transactionHash": "0x82419cccc1363c931024d76d253056d2dd5ed56917121150808739f5dc9a04bc",
      "transactionIndex": "0x0",
      "blockHash": "0xa65584a8d7a36ec30e63ed61daf06b6336db43fc55d6366f484f2be1d92c858b",
      "logIndex": "0x0",
      "removed": false
    }
  ],
  "id": 1
}

For other filters, see eth_getLogs in the Ethereum JSON-RPC API reference.

Tracing transactions

Etherlink supports the debug_traceTransaction and debug_traceBlockByNumber RPC endpoints, which provide debugging information about transactions and blocks. Note that the debug_traceTransaction endpoint supports only the structLogger and callTracer tracers. For more information about tracers, see Built-in tracers in the Geth documentation.

To get debugging information about a transaction with debug_traceTransaction, pass the hash of the transaction, as in this example:

curl --request POST \
     --url https://node.ghostnet.etherlink.com \
     --header 'accept: application/json' \
     --header 'content-type: application/json' \
     --data '
{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "debug_traceTransaction",
  "params": [
    "0x7b4c5cd4816aa5b529e11f9f5799d6a0f4b04ac53496688fef35c5762c5f9601"
  ]
}
'

The response includes data about the transaction, including its status, gas cost, and return value. It also includes the structured logs from the EVM execution of the transaction.

You can also get this information via ethers.js, as in this example:

async function sendTransaction() {

  // Send the transaction
  const simpleTransaction = await simpleContract.set(5);
  console.log("Transaction hash:", simpleTransaction.hash);

  // Wait for the transaction to be confirmed
  await simpleTransaction.wait();
  console.log("Transaction confirmed!");

  // Get trace information and print the top level of data
  const trace = await provider.send("debug_traceTransaction", [simpleTransaction.hash]);
  console.log("Transaction trace output:");
  console.dir(trace, { depth: 2 });
}

The result looks like this:

Transaction hash: 0x11231008cfe87e107cadca34136da439c4e980b27af7c6c84e4b44c93aab45a0
Transaction confirmed!
Trace output:
{
  gas: '21183',
  failed: false,
  returnValue: '0x',
  structLogs: [
    {    
      depth: 1,
      error: "",
      gas: '21180',
      gasCost: 3,
      memory: null,
      op: "PUSH1",
      pc: 0,
      stack: [],
      storage: {}
    }
    // Omitted for length
  ]
}

Similarly, you can use the debug_traceBlockByNumber endpoint to get information about a block by passing its number in hexadecimal, as in the following example:

curl --request POST \
     --url https://node.ghostnet.etherlink.com \
     --header 'accept: application/json' \
     --header 'content-type: application/json' \
     --data '
{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "debug_traceBlockByNumber",
  "params": [
    "0x011b1ac0",
    {"tracer": "callTracer"}
  ]
}
'

Etherlink supports only the callTracer tracer for this endpoint, and only for blocks after the Bifröst upgrade. Calling this endpoint on blocks prior to Bifröst returns empty data. Bifröst was activated on block 10,758,937 on Testnet and block 4,162,673 on Mainnet.

The response includes information about the transactions in that block, as in this example:

{
  "jsonrpc": "2.0",
  "result": [
    {
      "txHash": "0x063530177d43cf3e5b685b399ff3ad7c097e8684c374f0c23be5d6343f1bc82a",
      "result": {
        "type": "CALL",
        "from": "0x45ff91b4bf16ac9907cf4a11436f9ce61be0650d",
        "to": "0xfe508b2cc2e1706c4ade46773162fe161d807000",
        "value": "0x0de0b6b3a7640000",
        "gas": "0x5d91",
        "gasUsed": "0x52bf",
        "input": "0xd0e30db0",
        "output": "0x",
        "logs": [],
        "calls": []
      }
    }
  ],
  "id": 1
}

You can also use ethers.js, as in this example:

async function sendTransaction() {

  // Send the transaction
  const simpleTransaction = await simpleContract.set(5);
  console.log("Transaction hash:", simpleTransaction.hash);

  // Wait for the transaction to be confirmed
  const receipt = await simpleTransaction.wait();
  console.log("Transaction included in block:", receipt.blockNumber);
  const hexBlockNumber = ethers.toBeHex(receipt.blockNumber);

  // Get information about the block
  const traceBlock = await provider.send("debug_traceBlockByNumber", [hexBlockNumber, {"tracer": "callTracer"}]);
  console.log("Block trace output:");
  console.dir(traceBlock, { depth: null });
}

Sending transactions to the delayed inbox

As described in Delayed inbox transaction processing, the delayed inbox provides an alternative mechanism to add a transaction to Etherlink. If the sequencer is not operating normally, sending transactions to the delayed inbox is a way to force Etherlink to include them.

When you submit a transaction to the delayed inbox, you encode and sign it as an Etherlink transaction but submit it to the delayed bridge contract on Tezos layer 1. Under normal circumstances, the sequencer receives the transaction and runs it as usual, but if the sequencer is not working for any reason and the transaction has not been run after a certain amount of time, the Etherlink Smart Rollup nodes run the transaction themselves. In this way, you can submit emergency transactions to the delayed inbox when the sequencer is not working. Delayed inbox transactions cost 1 tez (on Tezos, charged to the account that submits it) in addition to the normal Etherlink transaction fees that will be deducted from the account that signed the transaction.

The general steps for submitting a transaction to the delayed inbox are:

1. Encode and sign the Etherlink transaction as usual with a library such as ethers.js.
2. Send the transaction to the delayed inbox contract as in an ordinary Tezos transaction, with a library such as Taquito.

The delayed inbox transaction requires 1 tez and these parameters:

• evm_rollup: The address of the Etherlink Smart Rollup, which you can get from Network information
• transaction: The signed transaction to run on Etherlink

The addresses of the delayed inbox smart contracts are:

• Testnet: KT1X1M4ywyz9cHvUgBLTUUdz3GTiYJhPcyPh
• Mainnet: KT1Vocor3bL5ZSgsYH9ztt42LNhqFK64soR4

This example signs an Etherlink transaction that transfers 1 XTZ and submits it to the delayed inbox on Testnet:

const { ethers } = require("ethers");
const { TezosToolkit } = require("@taquito/taquito");
const { InMemorySigner } = require('@taquito/signer');

// Define the provider by its RPC address
const provider = new ethers.JsonRpcProvider("https://node.ghostnet.etherlink.com");

// Sender's private key
const privateKey = process.env.ETHERLINK_PRIVATE_KEY;
const etherlinkWallet = new ethers.Wallet(privateKey, provider);

// Sign and return Etherlink transaction
const signEtherlinkTransaction = async () => {

  // Create the transaction
  const estimateTx = {
    // Send XTZ to this address
    to: "0x46899d4FA5Ba90E3ef3B7aE8aae053C662c1Ca1d",
    value: ethers.parseEther("0.1"), // Sending 0.1 XTZ
    gasLimit: 21000, // Replace with an estimate later
    maxFeePerGas: ethers.parseUnits("1", "gwei"), // Limit transaction to gas price of 1 gwei
    nonce: await provider.getTransactionCount(etherlinkWallet.address, "latest"),
    chainId: (await provider.getNetwork()).chainId.toString(),
  };

  // Estimate the gas
  const estimatedGas = await provider.estimateGas(estimateTx);

  // Update the transaction with the estimated gas
  const tx = { ...estimateTx, gasLimit: estimatedGas };

  // Sign the transaction
  const signedTx = await etherlinkWallet.signTransaction(tx);
  console.log("Signed Transaction:", signedTx);

  return signedTx;
}

// Set up Taquito
const rpcUrl = 'https://ghostnet.ecadinfra.com';
const Tezos = new TezosToolkit(rpcUrl);
Tezos.setProvider({ signer: new InMemorySigner(process.env.TEZOS_PRIVATE_KEY) })
const delayedInboxContractAddress = "KT1X1M4ywyz9cHvUgBLTUUdz3GTiYJhPcyPh"; // Testnet
const rollupAddress = 'sr18wx6ezkeRjt1SZSeZ2UQzQN3Uc3YLMLqg'; // Testnet

// Send the transaction to the delayed inbox
const sendDelayedInboxTransaction = async (etherlinkTransaction) => {
  const delayedInboxContract = await Tezos.wallet.at(delayedInboxContractAddress);
  try {
    const op = await delayedInboxContract.methodsObject.default({
      evm_rollup: rollupAddress,
      transaction: etherlinkTransaction.slice(2), // removes the 0x prefix
    }).send({ amount: 1 }); // Include 1 tez
    console.log(`Waiting for ${op.opHash} to be confirmed...`);
    await op.confirmation(2);
  } catch (error) {
    console.log(`Error: ${JSON.stringify(error, null, 2)}`);
  }
}

signEtherlinkTransaction()
  .then(sendDelayedInboxTransaction);

Similarly, this example signs a call to a smart contract and submits it to the delayed inbox:

const { ethers } = require("ethers");
const { TezosToolkit } = require("@taquito/taquito");
const { InMemorySigner } = require('@taquito/signer');

const fullABI = [{"inputs":[],"name":"get","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"x","type":"uint256"}],"name":"set","outputs":[],"stateMutability":"nonpayable","type":"function"}];

// Define the provider by its RPC address
const provider = new ethers.JsonRpcProvider("https://node.ghostnet.etherlink.com");

// Sender's private key
const privateKey = process.env.ETHERLINK_PRIVATE_KEY;
const etherlinkWallet = new ethers.Wallet(privateKey, provider);

const contractAddress = "0x3D3402f42Fb1ef5Cd643a458A4059E0055d48F9e";

// Sign and return Etherlink smart contract call
const signEtherlinkSmartContractCall = async () => {
  const contractInterface = new ethers.Interface(fullABI);
  const data = contractInterface.encodeFunctionData("set", [11]);

  // Create the transaction
  const estimateTx = {
    to: contractAddress,
    value: 0,
    data: data,
    gasLimit: 41000, // Replace with an estimate later
    maxFeePerGas: ethers.parseUnits("1", "gwei"), // Limit transaction to gas price of 1 gwei
    nonce: await provider.getTransactionCount(etherlinkWallet.address, "latest"),
    chainId: (await provider.getNetwork()).chainId.toString(),
  };

  // Estimate the gas
  const estimatedGas = await provider.estimateGas(estimateTx);
  console.log("Estimated gas:", estimatedGas);

  // Update the transaction with the estimated gas
  const tx = { ...estimateTx, gasLimit: estimatedGas };

  // Sign the transaction
  const signedTx = await etherlinkWallet.signTransaction(tx);
  console.log("Signed Transaction:", signedTx);

  return signedTx;
}

// Set up Taquito
const Tezos = new TezosToolkit('https://ghostnet.smartpy.io');
Tezos.setProvider({ signer: new InMemorySigner(process.env.TEZOS_PRIVATE_KEY) })
const delayedInboxContractAddress = "KT1X1M4ywyz9cHvUgBLTUUdz3GTiYJhPcyPh"; // Testnet
const rollupAddress = 'sr18wx6ezkeRjt1SZSeZ2UQzQN3Uc3YLMLqg'; // Testnet

// Send the transaction to the delayed inbox
const sendDelayedInboxTransaction = async (etherlinkTransaction) => {
  const delayedInboxContract = await Tezos.wallet.at(delayedInboxContractAddress);
  try {
    const op = await delayedInboxContract.methodsObject.default({
      evm_rollup: rollupAddress,
      transaction: etherlinkTransaction.slice(2), // removes the 0x prefix
    }).send({ amount: 1 }); // Include 1 tez
    console.log(`Waiting for ${op.opHash} to be confirmed...`);
    await op.confirmation(2);
  } catch (error) {
    console.log(`Error: ${JSON.stringify(error, null, 2)}`);
  }
}

signEtherlinkSmartContractCall()
  .then(sendDelayedInboxTransaction);