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 0x7215460f315699cc9a5a173b54a15b5a29a2cca3df45975d7c933b3c49183845. Chain 2 (Bitcoin): anchored in block 953886 (2026-06-16T04:37:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0b4a7346-8034-4365-b870-eb68dbc858de.json and https://artists.proofprofile.net/proofs/artist/0b4a7346-8034-4365-b870-eb68dbc858de.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Cantándole a la Maña Desde la Sierra de Sonora, vol. 1 (En Vivo)