1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x258eceb2415cc959f9a603e39ba4ac47d0d3ceb2209d39b4aca21195379d9e71. Chain 2 (Bitcoin): anchored in block 953654 (2026-06-14T16:26:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/496ec152-134e-45cb-9c43-4f9594307cbd.json and https://artists.proofprofile.net/proofs/artist/496ec152-134e-45cb-9c43-4f9594307cbd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tribute to Oscar D'León: Soy Alegrìa / Lloraras / Rebelion / Cabo e / Quimbara
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