A database on solana blockchain.

This is just an idea, for now..

Features

• Instant query
  Query a number on the fly.
• Offline check
  Download numbers reported in the last N days to the local database. (1<= N <= 60)
• Reporting
  Report a number as spam with category.
• Privacy
  No account required, no email registration. Just generate a wallet locally.

Which blockchain

• Ethereum is too slow
• Solana works (current solution)
• Sui is yet to learn
• IPFS too slow

Cost

• Use testnet instead of mainnet to avoid transaction fee...
• Schedule a daily workflow to airdrop 1 SOL when the balance < 1 SOL. (this is free on testnet)

TODO

• Support SHA1, store/query a number's SHA1 hash instead of the plain number.

Demo repo

https://github.com/aj3423/spam_db_solana

Demo Screenshot