Blind Box

1. design PRD; 2. develop smart contracts; 3. smart contracts test and deploy to testnet with foundry; 4. develop backend project with golang; 5. develop frontend project with nextjs; 6. debug the whole process; I have met several problems with my orginal plan and then adopt alternatives finally; 1. Chainlink VRF cannot fulfill automatically on Telos evm testnet --- use pseudo random number function just for show; 2. Cannot find a good free subgraph indexer for Telos --- develop golang backend server to pull the events by http api and update data in the DB