First-in first-served .rsk registrar

• Rootstock (RSK) MainNet: 0x779195c53cc7c1a33bd2eea5f63f2c1da8798d61
• Rootstock (RSK) TestNet: 0x36ffda909f941950a552011f2c50569fda14a169
• Smart contract

Has registration role in RSK Owner.

• Defines a commit-reveal process to avoid front-running.
• Accepts payments via
  • ERC-20 approve() + register().¹
  • ERC-677 transferAndCall().²
• Calculates price using NamePrice contract.
• It has an owner that can³
  • Set minimum commitment age.
  • Set minimum registration name length available.
  • Change name price contract.

The registration must be performed as follows:

1. Calculate makeCommitment hash of the domain to be registered (off-chain).
2. Commit the calculated hash using commit.
3. Wait minCommitmentAge seconds.
4. Execute registration via ERC-20 (with approval) or ERC-677.

Find transferAndCall() encoder in utils/index.js

Methods

• price
• makeCommitment
• commit
• canReveal
• register

price

function price (string memory name, uint expires, uint duration) public view returns(uint);

Calculates the price of a name, denominated in RIF.

• name not used. Pass ''
• expires not used. Pass 0
• duration to register the name for.

makeCommitment

function makeCommitment (bytes32 label, address nameOwner, bytes32 secret) public pure returns (bytes32);

Create a commitment for register action.

Don’t use this method on-chain, as that will reveal your secret. Instead run this method off-chain (note that it is pure), and save the return value.

• label keccak256 of the name to be registered.
• nameOwner Owner of the name to be registered.
• secret Secret to protect the name to be registered.

Returns the commitment hash.

commit

function commit(bytes32 commitment) external;

Commit before registering a name.

A valid commitment can be calculated using makeCommitment off-chain.

• commitment A valid commitment hash.

canReveal

function canReveal(bytes32 commitment) public view returns (bool);

Ensure the commitment is ready to be revealed.

This method can be polled to ensure registration.

• commitment Commitment to be queried.

Returns whether the commitment can be revealed or not.

register

function register(string calldata name, address nameOwner, bytes32 secret, uint duration);

Registers a .rsk name in RNS.

This method must be called after committing.

You must have previously executed approve() for the amount of tokens to be transferred.

• name The name to register.
• nameOwner The owner of the name to register.
• secret The secret used to make the commitment.
• duration Time to register in years.

Register via ERC-677

Use RIF transferAndCall method with the following encoding to perform a RIF token transfer and domain registration in a single transaction

Encoding:

Parameters are used int he same manner as register. Use 0xc2c414c8 as the signature.

1. https://eips.ethereum.org/EIPS/eip-20
2. https://github.com/ethereum/EIPs/issues/677
3. https://github.com/OpenZeppelin/openzeppelin-contracts implementation.