thumb|right|Herbert Magidson Herbert A. Magidson (January 7, 1906 – January 2, 1986) was an American popular lyricist. His work was used in over 23 films and four Broadway revues. He won the first Ac
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 0xd11f8045a2706eaa226f07faa3b3e3aa7c2f6b9a4e3e8514d7c13a51a7b73433. Chain 2 (Bitcoin): anchored in block 954069 (2026-06-17T08:30:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7a273e88-404d-4676-80dc-74f3563119cc.json and https://artists.proofprofile.net/proofs/artist/7a273e88-404d-4676-80dc-74f3563119cc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).