A working Ceefax-style Teletext service where every page is live sebbi.pro and the chain is checked in your own phone.
Open sebbi TELETEXT →sebbi TELETEXT is built the way Ceefax was in 1974: pages of 40 characters by 25 rows made of real Teletext bytes, decoded in the browser by a Level 1 decoder. Every page is live: the index with headlines, every block as a page, and the chain verified on the visitor's own device.
Open the service, type page numbers, and download real .tti page files.
Anyone who wants to watch the proof layer work live.
Free.
Yes, at https://sebbi.pro/teletext.
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.
Quantum Seal: post-quantum signatures on every blockEvery block in the sebbi.pro chain is signed twice, post-quantum ML-DSA-87 and classical Ed448, so the evidence survives the quantum computer.
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.