José Miguel Moreno (Madrid, 1946, (Spanish Wikipedia says born in 1955) is a Spanish specialist of historical plucked string instruments, such as the vihuela, lute, theorbo, and guitars. In 1977 he wo
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 0x6ee148a08cdafb8cbe8faec18fca924773e8978c913e4a81622c19ee13e13873. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b284e1b7-eeac-4475-ad5d-24014cdf828a.json and https://artists.proofprofile.net/proofs/artist/b284e1b7-eeac-4475-ad5d-24014cdf828a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).