EIP-2612 is the ERC-20 Permit extension: it lets a token holder grant a spending allowance via an off-chain signature instead of an on-chain `approve` transaction, so a `permit()` call and the following action can be bundled into one transaction and the holder doesn't need to pay gas for the approval step separately.
Key Characteristics
- Gasless, single-call approvals: A holder signs an off-chain EIP-712 message; a single permit() call verifies it and sets the allowance, avoiding a separate on-chain approve transaction.
- Security & backward compatibility: Each permit consumes a unique, increasing nonce and is bound to the token's EIP-712 domain (name, chain ID, contract address).
- Seamless DeFi & wallet integration: DEXs, lending protocols, and relayers can batch permit -> action in one atomic transaction.
Why EmpoorioChain Doesn't Need an EIP-2612-style Standard
EIP-2612 exists to solve two Ethereum-specific pain points: a separate on-chain approval transaction, and the holder having to pay gas for it. On EmpoorioChain, extrinsics can already be bundled and fee-sponsored natively — a transfer doesn't require a prior approval step for the common case, and pallet-paymaster lets a third party cover the fee. There's no separate permit type, EIP-712 domain, or contract upgrade needed to get the same UX; it comes from the base account and fee model.
Token Transfer Model
On Ethereum, moving ERC-20 tokens on someone's behalf typically needs `approve` + `transferFrom`. On EmpoorioChain, each account holds its balance directly under its AccountId32 in pallet-emp-assets; a direct transfer is a single extrinsic. Where delegated spending is genuinely needed, the pallet exposes its own approval-style extrinsic — not a bespoke pattern reinvented per token.
Fee-Sponsorship Model
EmpoorioChain's pallet-paymaster lets a third party (a wallet service, dApp backend, or relayer) cover the transaction fee for a user's signed extrinsic. This delivers the same gasless UX EIP-2612 targets, as a native fee-abstraction feature rather than an EIP-712-based permit signature scheme layered on top of ERC-20.
How Gasless Transfers Work on EmpoorioChain
Below are two minimal examples mapping the two most common EIP-2612-style scenarios to EmpoorioChain's native primitives, using @polkadot/api against pallet-emp-assets.
1. Holder Pays Their Own Fee (Self-Sponsored)
The holder signs and pays the fee themselves. A single `assets.transfer` extrinsic moves the asset — no separate permit function needed.
// Self-sponsored: the token holder signs and pays their own fee.
// A single extrinsic moves the asset directly — pallet_emp_assets accounts
// are keyed by AccountId32, so there is no separate "associated token
// account" or approve step to bundle in first.
import { ApiPromise, WsProvider, Keyring } from "@polkadot/api";
const api = await ApiPromise.create({
provider: new WsProvider("wss://rpc.testnet.empooriochain.org"),
});
const keyring = new Keyring({ type: "sr25519" });
const owner = keyring.addFromUri("//your-seed-here");
const assetId = 1;
const recipient = "5FHneW...";
const amount = 1_000_000;
const hash = await api.tx.assets
.transfer(assetId, recipient, amount)
.signAndSend(owner);
console.log("Sent (self-sponsored):", hash.toString());2. Third Party Pays the Fee (Relayer-Sponsored)
Here the holder signs the extrinsic, but a relayer or dApp backend covers the DMS fee, via EmpoorioChain's native paymaster support.
// Relayer-sponsored: the holder signs a payload off-chain, a relayer
// submits it and pays the fee. EmpoorioChain's fee-abstraction pallets
// (pallet_paymaster / pallet_account_abstraction) support this natively,
// without an EIP-712-style permit type or a separate approval transaction.
import { ApiPromise, WsProvider, Keyring } from "@polkadot/api";
const api = await ApiPromise.create({
provider: new WsProvider("wss://rpc.testnet.empooriochain.org"),
});
const keyring = new Keyring({ type: "sr25519" });
const relayer = keyring.addFromUri("//relayer-seed-here");
const assetId = 1;
const recipient = "5FHneW...";
const amount = 500_000;
// signedPayload is produced client-side by the token holder.
const hash = await api.tx.assets
.transfer(assetId, recipient, amount)
.signAndSend(relayer, { payload: signedPayload });
console.log("Sent (relayer-sponsored):", hash.toString());