Meta-Transaction Support

Meta-transactions allow users to sign actions off-chain and have them relayed by a third party (the Broadcaster), enabling gasless or delegated execution.

How It Works

1. User signs a meta-transaction

   • Encodes the function, parameters, deadline, and gas constraints

   • Uses EIP-712 for secure signature

2. Broadcaster submits to contract

   • Verifies signature

   • Executes on behalf of the user

   • Pays gas fees

3. Contract validates

   • Checks nonce and replay protection

   • Enforces operation rules (timelock, roles, etc.)

Advantages

• Gasless UX: Users don’t need ETH to interact

• Security Preserved: Same checks as direct calls

• Composable: Can be used with timelock + recovery

Example Usage

const metaTxParams = await secureOwnable.createMetaTxParams(
  contractAddress,
  functionSelector,
  deadline,
  maxGasPrice,
  signer
);

const metaTx = await secureOwnable.generateUnsignedMetaTransactionForExisting(
  txId,
  metaTxParams
);

const signature = await walletClient.signMessage({ message: { raw: metaTx.message }, account: signer });

await secureOwnable.transferOwnershipApprovalWithMetaTx({
  ...metaTx,
  signature
}, { from: broadcaster });

Broadcaster Role

Only designated Broadcasters can submit meta-transactions. They are expected to:

• Validate user signatures

• Cover transaction fees

• Have no privileged access to the contract

Meta-transactions are a critical tool for improving accessibility and integration without compromising security.