Commit a prediction now. It is hashed in your browser, recorded with a timestamp and the current Bitcoin block, and kept secret. Reveal it when it plays out. You cannot backdate a call you did not make, and you cannot quietly bury one you missed.
Nail a call and mint it as a one-of-one Bitcoin Ordinal, a laser-eyed receipt stamped with your exact prediction. It renders on any ordinals explorer and lives in your wallet forever. Find the Golden Eye if you can.
Any call you want on record, a market move, a sports result, a political take, a hot take. It is hashed locally with a random secret, so the text never leaves your browser, only the hash. Save your call and secret to reveal later.
Paste your call and secret. Anyone can verify the hash matches and read the original commit time. Or paste just a commitment to look one up.
Every commit is recorded here the moment it is made. Sealed until revealed. Append-only, so nobody cherry-picks.
Your call plus a random secret are hashed with SHA-256 in your browser. Only the hash leaves your machine.
The hash is submitted to OpenTimestamps, which aggregates it into a real Bitcoin transaction. Your proof verifies against Bitcoin itself, no third-party trust required.
Show the call and secret. The hash recomputes and matches, proving you committed that exact prediction, at that time.