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.
Open Quantum Seal →Quantum Seal protects sebbi.pro evidence against future quantum attacks. Blocks are batched into RFC 6962 Merkle trees, at most five minutes or 4096 blocks per batch, and each batch root carries two signatures.
The signatures are ML-DSA-87 (FIPS 204, NIST security level 5) and Ed448 (RFC 8032). Both must verify. If either algorithm is ever broken, the other still protects the evidence. Changing algorithms needs two people (four-eyes crypto agility).
Banks, governments, defence, healthcare and anyone keeping evidence for decades.
Included on every block.
Yes. Every block is dual-signed with ML-DSA-87 and Ed448. See https://sebbi.pro/quantum.
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.
Timestamp any file's fingerprint into Bitcoin for free and prove forever that it existed, without trusting sebbi.pro.
sebbi TELETEXTA working Ceefax-style Teletext service where every page is live sebbi.pro and the chain is checked in your own phone.
The Safe AI RegistryA public register of AI deployments that can prove its own honesty, including proof that a domain was not listed on a date.