Markovian · The Lab

Protocol demos, running in your browser.

Every demo on this page is real cryptography running in the browser — no server, no network. Inputs can be tampered with freely; the checks respond to the exact bytes.

All client-side SHA-256 via SubtleCrypto. Offline, honest about it.

Stamp anything

Type. The canonical root recomputes live. This exact root is what gets anchored to Bitcoin, and changing one byte changes all of it.

Input

SHA-256 canonical root0 bytes

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Change one character above and watch the root scatter.

Tamper test

A stamped record and the root committed at stamp time. Edit a single byte and the verification breaks, exactly as it would for anyone checking later.

Verified Current bytes match the committed root.

Stamped record (editable)

Committed root (at stamp time)

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Current root (recomputed now)

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and try typing satoshi · block · gm