Contracts

Deployed contracts on Sonic Testnet (Chain ID: 14601).

Addresses

Contract	Address	Purpose
EntryPoint	0x0000000071727De22E5E9d8BAf0edAc6f37da032	ERC-4337 v0.7 singleton
SortedPaymaster	0x41B35AAD2e3F8c36ad883c354AEa828a2100Bb4a	Our verifying paymaster
Test Counter	0xEcca59045D7d0dcfDB6A627fEB3a39BC046196E3	Demo contract for testing

SortedPaymaster

A verifying paymaster that sponsors gas for allowlisted transactions.

How it works

1. Backend signs paymasterAndData with authorization details
2. User includes this in their UserOperation
3. EntryPoint calls the paymaster's validatePaymasterUserOp
4. Paymaster verifies the signature and approves payment
5. After execution, postOp is called for accounting

Key functions

function validatePaymasterUserOp(
    PackedUserOperation calldata userOp,
    bytes32 userOpHash,
    uint256 maxCost
) external returns (bytes memory context, uint256 validationData);

Validates the UserOperation and decides whether to sponsor it.

function postOp(
    PostOpMode mode,
    bytes calldata context,
    uint256 actualGasCost,
    uint256 actualUserOpFeePerGas
) external;

Called after execution to track actual gas used.

Security

• Only accepts signatures from Sorted's backend signer
• Validates policy hash to prevent tampering
• Time-bounded validity windows
• Allowlist checked server-side before signing

EntryPoint

The standard ERC-4337 v0.7 EntryPoint contract. Handles UserOperation validation and execution.

View on Explorer →

Network Details

Property	Value
Chain ID	14601
RPC URL	https://rpc.testnet.soniclabs.com
Explorer	https://testnet.sonicscan.org
Currency	S (Sonic)

Verifying Contracts

View any contract on the explorer:

https://testnet.sonicscan.org/address/{ADDRESS}