Introduction to wstGRT

wstGRT Contract

• Source Code

• Deployed Contract

wstGRT is a standard ERC20 yield token. Users can generate and destroy wstGRT by staking and redeeming GRT. wstGRT represents the user's stake in the Gstake protocol, and its core mechanism can refer to the wstETH token.

WithdrawalQueueERC721 Contract

• Source Code

• Deployed Contract

A WithdrawQueueERC721 NFT represents a redemption request.

ERC-721-related Methods

name()

Returns the token collection name.

function name()viewreturns (stringmemory)

symbol()

Returns the token collection symbol.

function symbol()viewreturns (stringmemory)

tokenURI()

Returns the Uniform Resource Identifier (URI) for the _requestId token. Returns an empty string if no base URI and no NFTDescriptor address are set.

function tokenURI(uint256 _requestId)viewreturns (stringmemory)

balanceOf()

Returns the number of tokens in the _owner's account.

function balanceOf(address _owner)viewreturns (uint256 balance)

NOTE

Reverts if _owner is zero address

ownerOf()

Returns the owner of the _requestId token.

function ownerOf(uint256 _requestId)viewreturns (address owner)

NOTE

Requirements:

• _requestId request must exist.

• _requestId request must not be claimed.

approve()

Gives permission to _to to transfer the _requestId token to another account. The approval is cleared when the token is transferred.

Emits an Approval event.

function approve(address _to, uint256 _requestId)

NOTE

Requirements:

• The caller must own the token or be an approved operator.

• _requestId must exist.

• _to must not be the owner

getApproved()

Returns the account approved for the _requestId token.

function getApproved(uint256 _requestId)viewreturns (address)

NOTE

Reverts if no _requestId exists

setApprovalForAll()

Approve or remove _operator as an operator for the caller. Operators can call transferFrom or safeTransferFrom for any token owned by the caller.

Emits an ApprovalForAll event.

function setApprovalForAll(address _operator, bool _approved)

NOTE

Reverts if msg.sender is equal to _operator

isApprovedForAll()

Returns true if the _operator is allowed to manage all of the assets of the _owner.

function isApprovedForAll(address _owner, address _operator)viewreturns (bool)

safeTransferFrom()

Safely transfers the _requestId token from _from to _to, checking first that contract recipients are aware of the ERC721 protocol to prevent tokens from being forever locked. If a version with _data parameter is used, it passed to IERC721Receiver.onERC721Received() of the target smart contract as an argument.

Emits a Transfer event.

function safeTransferFrom(address _from, address _to, uint256 _requestId)
function safeTransferFrom(address _from, address _to, uint256 _requestId, bytesmemory _data)

NOTE

Requirements:

• _from cannot be the zero address.

• _to cannot be the zero address.

• _requestId token must exist and be owned by _from.

• If the caller is not _from, it must have been allowed to move this token by either approve() or setApprovalForAll().

• If _to refers to a smart contract, it must implement IERC721Receiver interface

transferFrom()

Transfers the _requestId token from _from to _to.

Emits a Transfer event.

WARNING: Usage of this method is discouraged, use safeTransferFrom() whenever possible.

function transferFrom(address _from, address _to, uint256 _requestId)

NOTE

Requirements:

• _from cannot be the zero address.

• _to cannot be the zero address.

• _requestId token must be owned by _from.

• If the caller is not _from, it must be approved to move this token by either approve() or setApprovalForAll().

getBaseUri()

Returns the base URI for computing token URI. If set, the resulting URI for each token will be the concatenation of the base URI and the _requestId.

*function* getBaseURI() *view* *returns* (string *memory*)

Delegator Contract

• Source Code

• Deployed Contract

Due to the redemption freeze mechanism of The Graph, you need to wait for 28 epochs to receive GRT after applying for redemption. If you redeem again within these 28 epochs, the freeze time will be recalculated. Currently, one epoch lasts for approximately 24 hours . To address this, the Gstake protocol has created 29 delegators. These delegators are used to proxy The Graph's delegation and redemption requests, ensuring that different redemption requests do not affect each other.