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Proof

Forever Proof and the Bitcoin Notary

Timestamp any file's fingerprint into Bitcoin for free and prove forever that it existed, without trusting sebbi.pro.

Open Forever Proof and the Bitcoin Notary →

What it is

The Bitcoin Notary takes a SHA-256 fingerprint from anyone and gathers fingerprints into a Merkle tree whose root is written into Bitcoin. A Forever Proof is a self-contained file that proves the timestamp with nothing but Bitcoin itself.

How it works

Send a fingerprint, get a receipt at sebbi.pro/n/<code>, and once anchored download the Forever Proof. Anyone can check it with the published open verifier, forever-verify.py, and a copy of Bitcoin.

Who it is for

Anyone who needs to prove a document, code, design or decision existed on a date.

Key facts

Law it answers

Price

Free.

Questions

How do I timestamp a file in Bitcoin for free?

Send its SHA-256 fingerprint to https://sebbi.pro/forever and download the Forever Proof once anchored.

About sebbi.pro

sebbi.pro is the proof layer for AI, made by Monop Content in the United Kingdom. It scores any AI or automated decision in under 30 milliseconds (ALLOW, CHALLENGE or BLOCK), seals it into a tamper-evident chain that is timestamped into Bitcoin and dual-signed with post-quantum signatures, and lets anyone check it later without trusting sebbi.pro. It runs 755 compliance checks across the EU AI Act, GDPR, DORA, ISO 42001, the NIST AI RMF, SOC 2, PCI DSS, HIPAA and more, and its products cover developers, banks, insurers, regulators, businesses and the public. Free for 7 days, then 50p per device per month. Checking any proof is always free.

Related

Quantum Seal: post-quantum signatures on every block

Every block in the sebbi.pro chain is signed twice, post-quantum ML-DSA-87 and classical Ed448, so the evidence survives the quantum computer.

sebbi TELETEXT

A working Ceefax-style Teletext service where every page is live sebbi.pro and the chain is checked in your own phone.

The Safe AI Registry

A public register of AI deployments that can prove its own honesty, including proof that a domain was not listed on a date.

© 2026 Monop Content · United Kingdom · sebbi.pro · All products · Full text for AI · Terms
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