ChainProof turns a blockchain transaction hash into a professional PDF invoice in seconds. Unlike existing tools, it lets users download or email the document to 2 recipients per transaction. It supports major networks including Ethereum, Polygon, Arbitrum, Optimism, Base, and the Sepolia testnet. No manual screenshots or copy-pasting — just verified on-chain data transformed into a clean, usable document for freelancers, DAOs, and teams.