Sir Alexander Chapman Ferguson (born 31 December 1941) is a Scottish former professional football manager and player, best known for managing Manchester United from 1986 to 2013. He is widely regarded
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 0xae680d51f50729b60eb48229e73f28f69dd49a2a2b5b3c61d1935bd4a27a2c24. Chain 2 (Bitcoin): anchored in block 953877 (2026-06-16T02:39:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/08362700-1dd4-44b3-986e-93381984f2c1.json and https://artists.proofprofile.net/proofs/artist/08362700-1dd4-44b3-986e-93381984f2c1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).