Star Notary

ERC-721 Token name = "Star Token";

ERC-721 Token symbol = "STC";

version Truffle and OpenZeppelin used

 "dependencies": {
    "openzeppelin-solidity": "^2.1.2",
    "truffle-hdwallet-provider": "^1.0.0-web3one.5"
  },

Note:

I used ropsten network instead rinkeby, because my account is still 0 for rinkeby.
any attempts to request for ETH in rinkeby network are failed.

How to Run

1. create file .secret and fill in your mnemonic seed words
2. run truffle develop
3. run truffle migrate --reset --network ropsten
   I use ropsten network because I cannot get ETH in my rinkeby account
4. go to client cd app
5. npm install and npm run dev
6. go to localhost:8080
7. block with star ID = 10 and starID = 20 are already created, attempt to recreate this id will be rejected by EVM