NFT based Auth Token

【Introduction of NFT based Auth Token】

• This is the smart contract that NFT is used for the AC (Access Control) management.

• NFT Auth Token works as a AC (Access Control) Token.
  • If an user who has a NFT Auth Token, that user can access contents which is permitted. (Admin has tokenID=1 of NFT Auth Token, User has tokenID that is greater than 2 of NFT Auth Token. Depends on tokenID, accessable contents level are different)
  • Login by being verified (checked) whether user has a NFT Auth Token or not.

【Remaining task (Future implementation)】

• Login
  • When user register, user upload a their profile picture onto IPFS. After that, user get IPFS hash of the uploaded image. That IPFS hash is used as one of condition of login.
  • Also I want to add SSI (Ethr-DID-registry of uPort) verification system for login.

• Add a pool for staking and earning interest for users (who buy a ticket which NFT Auth Token is embed).
  • I assume that this situation is like a user buy ticket for subscription contents, fun, etc...
  • Utilize mUSD of mStable for depositing into the Pool (earning interst in the Pool / redeeming from Pool, as well)

【Teck Stack】

• Solidity (solc) v0.6.12
• Truffle v5.1.49
• web3.js v1.2.1
• Node.js v11.15.0

【Setup】

1. Add .env file into the root directory.

• .env.example is a reference for creating .env . https://github.com/masaun/NFT-auth-token/blob/master/.env.example

2. Npm install

$ npm install

3. Migrate

$ npm run migrate:kovan

【Script】(on Kovan testnet)

1. Create a new NFT Auth Token

$ npm run script:NftAuthTokenManager

2. Mint a new Auth Token ID for user who is called. After that, system check verification whether user who is called has NFT Auth Token (Token ID) or not.

$ npm run script:NftAuthToken

3. (Future implementaion)

$ npm run script:PoolWithNftAuthToken

【Test】

• Testing for all contract (※ Kovan test network ) <= This test is in progress

$ npm run test:kovan

【References】

• [NFT]
  • Openzepplin document for ERC721 https://docs.openzeppelin.com/contracts/3.x/erc721

• [mStable]:
  • https://docs.mstable.org/

• [Ethr-DID-Registry (from uPort)]
  • https://github.com/uport-project/ethr-did-registry