Ian Davidson may refer to: Ian Davidson (footballer, born 1947), English footballer Ian Davidson (footballer, born 1937), Scottish footballer Ian Davidson (British politician) (born 1950), former Scot
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f799bdd9f77f5cca1f79c5800fe33e1d79ca876009b363d305e4fbe8536f3a2. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/df9b45bb-5c8c-4602-95b3-570340e1da32.json and https://artists.proofprofile.net/proofs/artist/df9b45bb-5c8c-4602-95b3-570340e1da32.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).