01
Seal
You write a prediction and pick a reveal date. We compute a SHA-256 fingerprint of the exact text and publish it — along with the timestamp and your handle — to the public archive. The prediction itself stays hidden.
THE METHOD
The future leaves receipts.
Del Futuro is a commit-then-reveal vault for predictions. Three steps — that's all there is.
02
Record
From that moment, the receipt is on file. The fingerprint is public; the text is unreachable through our API until the reveal date passes. Nothing can be edited.
03
Reveal
On the reveal date, the capsule unseals automatically. The text becomes public, next to its original fingerprint and timestamp. Anyone can click Verify to re-hash the revealed text and confirm it matches the receipt that was filed all along.
A NOTE ON LANGUAGE
We don't say "on-chain" and we don't say "immutable." We say timestamped and verifiable. The receipt is the proof: a fingerprint published before the answer was known, and a text that hashes to it after the fact.