Commitments

Timestamp an idea without revealing it. We store a cryptographic fingerprint of your text — not the text itself — in a public, append-only chain. Later you can prove you wrote it, and when, by revealing the original. Nobody can read your idea in the meantime, and nobody (not even us) can quietly change its place in the order.

Verify a commitment View the public chain
How it works. You write an idea. We compute sha256(salt + your text) and store only that hash, with a timestamp and a position in an append-only chain. The hash reveals nothing about your idea, and the chain makes the order tamper-evident. We do not store your text — you keep it, along with a one-time secret salt, and reveal them whenever you want to prove what you wrote and when.

Commit an idea

This is the only part anyone can see. Leave blank to stay fully opaque.
Kept secret. Only its salted hash is stored. Max 100 KB.

What this proves, honestly: the chain proves the order of commitments and that no entry was altered or reordered after the fact. On its own it doesn't prove absolute time to an outside skeptic, since the operator holds the database. Periodically we can publish the latest chain hash somewhere unchangeable (a public post, a git commit, a blockchain) to anchor everything before it in real-world time — see the chain and any anchors.