VeChainThor Node Token

Contracts for VeChainThor Node Token on the VeChainThor blockchain.

Table of Contents

• Project Construct
• Contracts Overview
  - TokenAuction.sol
  - ClockAuction.sol
• Contract Address
• API
  - getMetadata
  - applyUpgrade
  - cancelUpgrade
  - getTokenParams
  - idToOwner
  - ownerToId
  - createSaleAuction
  - createDirectionalSaleAuction
  - bid
  - cancelAuction
  - addAuctionWhiteList
  - removeAuctionWhiteList
• Audit Report
• License

Project Construct

The project includes the following files:

    ├── SupportsInterface.sol
    ├── ThunderFactory.sol
    ├── TokenAuction.sol
    ├── XAccessControl.sol
    ├── XOwnership.sol
    ├── auction
    │       ├── ClockAuction.sol
    │       └── ClockAuctionBase.sol
    └── utility
            ├── Ownable.sol
            ├── Pausable.sol
            ├── SafeMath.sol
            ├── Strings.sol
            └── interfaces
                    ├── IERC165.sol
                    ├── IVIP181.sol
                    └── IVIP181Basic.sol

Contracts Overview

The smart contracts are split into modules.

• XAccessControl - Defines the organizational permission and black lists.
• ThunderFactory - Defines the Token struct and storage, it's the core contract
• XOwnership - Implements VIP181 and defines ownership and transfer rights
• TokenAuction - Calls auction contract and Implements token auction
• ClockAuction - Implements token auction logic
• ClockAuctionBase - Defines internal variables, functions for token auction

TokenAuction.sol

ClockAuction.sol

Contract Address

• TokenAuction: 0xb81E9C5f9644Dec9e5e3Cac86b4461A222072302
• ClockAuction: 0xE28cE32d637eb93cBDa105f87FBB829E9ef8540B

API

getMetadata

    function getMetadata(uint256 _tokenId) public view 
            returns(
                    address owner,
                    uint8 level,
                    bool isOnUpgrade,
                    bool isOnAuction,
                    uint64 lastTransferTime,
                    uint64 createdAt,
                    uint64 updatedAt
            )

Get the information about the given token.

Params:

• _tokenId: token id

Return:

• owner: the address that owns token
• level: the level of the token
• isOnUpgrade: return true when the token is upgrading
• isOnAuction: return true when the token is on auction
• lastTransferTime: the timestamp that the token
• createdAt: when the token is genearted
• updatedAt: when the token data is updated

applyUpgrade

    function applyUpgrade(strengthLevel _toLvl)

Apply for upgrading your node token.

Params:

• _toLvl: the next level index. Notice that a normal node token cannot upgrade to X node token.

Level Index	Level Name
1	VeChainThor Strength Node
2	VeChainThor Thunder Node
3	VeChainThor Mjolnir Node
4	VeChainThor X Node
5	VeChainThor Strength X Node
6	VeChainThor Thunder X Node
7	VeChainThor Mjolnir X Node

cancelUpgrade

    function cancelUpgrade(uint256 _tokenId)

Cancel the application of upgrading node token.

Params:

• _tokenId: the id of the token

getTokenParams

    function getTokenParams(strengthLevel _level) public view
            returns(
                    uint256 minBalance,
                    uint64 ripeDays,
                    uint64 rewardRatio,
                    uint64 rewardRatioX
            )

Get Node Level parameters

Return:

• minBalance: the minimum VET balance needed
• ripeDays: the days of being the level
• rewardRatio: reward ratio for normal node token
• rewardRatioX: reward ratio for X node token

idToOwner

    function idToOwner(uint256 _tokenId) public view
            returns (address)

Get the owner of the given node token.

Params:

• _tokenId: the id of node token

Return: the owner of the token

ownerToId

    function ownerToId(address _owner) public view
            returns (uint256)

Get the node token id of the given address owns.

Params:

• _owner: the address that owns token

Return: the node token id of the given address owns

createSaleAuction

    function createSaleAuction(
            uint256 _tokenId,
            uint128 _startingPrice,
            uint128 _endingPrice,
            uint64 _duration
    ) public

Create an public auction.

Params:

• _tokenId: the id of token
• _startingPrice: starting price
• _endingPrice: ending price
• _duration: the duration of the auction from 2 hours to 7 days

createDirectionalSaleAuction

    function createDirectionalSaleAuction(
            uint256 _tokenId,
            uint128 _price,
            uint64 _duration,
            address _toAddress
    ) public

Create a directional auction.

Params:

• _tokenId: the id of token
• _price: the selling price
• _duration: the duration of the auction from 2 hours to 7 days
• _toAddress: the receiver address

bid

    function bid(uint256 _tokenId) public payable

Purchase or bid an auction.

Params:

• _tokenId: the id of token

cancelAuction

    function cancelAuction(uint256 _tokenId) public

Cancel the auction.

Params:

• _tokenId: the id of token

addAuctionWhiteList

    function addAuctionWhiteList(uint256 _tokenId, address _address) public

Add an address to whitelist.

Params:

• _tokenId: the id of token
• _address: the target address

removeAuctionWhiteList

    function removeAuctionWhiteList(uint256 _tokenId, address _address) public

Remove an address from whitelist.

Params:

• _tokenId: the id of token
• _address: the target address

Audit Report

Security audit performed by SlowMist Team.

License

It is licensed under the GNU Lesser General Public License v3.0, also included in LICENSE file in repository.