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 0x3c86e54649c9ceb00bc9f5afe69cc64ed6ccce14c510d9d4591cbffe64cd8245. Chain 2 (Bitcoin): anchored in block 954623 (2026-06-20T23:40:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/caf03f63-e798-408d-ad98-a141e7b0780d.json and https://artists.proofprofile.net/proofs/artist/caf03f63-e798-408d-ad98-a141e7b0780d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Capítulo I: La Mancha (¿Quién Mató a Quijote?)