Sir Fred Hoyle (24 June 1915 – 20 August 2001) was an English astronomer. With Margaret and Geoffrey Burbidge and William Alfred Fowler, he formulated the theory of stellar nucleosynthesis in the infl
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e5c818da94359750fb97f2b2b96801342a0d806ad0646e37f05c7a46e5c931. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c25d3cd2-2126-4773-b5c0-983f6a525bb7.json and https://artists.proofprofile.net/proofs/artist/c25d3cd2-2126-4773-b5c0-983f6a525bb7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).