what is metaproof
Metaproof is a receipt machine for facts. You write a tiny note on Solana, and after that, nobody can ever say you didn't.
Think about a claim ticket. You drop off your coat, you get a ticket. Later, the ticket proves the coat is yours. Nobody argues with the ticket.
Metaproof does that, but for information. You take any fact you want to stand behind. A file. A promise. A score. A prediction. You squeeze it down to 32 bytes and post it on Solana. Now there is a timestamped, public record that says: this exact thing existed, at this exact moment, and someone stood behind it.
That's it. That's the whole trick. It sounds small. It is not small.
why would I want that?
Because "trust me" is the weakest sentence on the internet. Some things you might want a receipt for:
- Calling your shot. Post the hash of a prediction today. Reveal it next week. Everyone can check you didn't change it.
- Proving a file existed. Hash a document and prove it was written before a certain date.
- Deals between programs. One program leaves a proof, another one verifies it. Receipts for robots.
the three moves
Metaproof only has three moves. You can learn them in one minute:
- Prove. Post your 32 bytes. A proof account appears on chain, with a small deposit inside it.
- Verify. Close the proof out. The deposit goes back to the person the proof was made for, and a permanent receipt (a metaproof) is left behind.
- Expire. Every proof has a timer. If nobody verifies it in time, anyone can sweep it up and the deposit goes to the protocol instead. The cleanup crew.
Every proof lives one of these lives: it gets verified, or it runs out of time. Either way, the story gets recorded, and you can read all of it right here in this explorer.