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 0x375479a08b39d9501892c9e0edc0baf56ea44c657a91811f298eed026d8dbddb. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c177608c-42be-42f6-b311-bdf8aaae9489.json and https://artists.proofprofile.net/proofs/artist/c177608c-42be-42f6-b311-bdf8aaae9489.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Canto de Pájaros, Sonidos Relajantes del Río, Asmr
Pájaros Cantando en el Bosque Cálido y Soleado
Orquesta Natural Cantos de Aves al Amanecer
Escucha Relajante, Sonidos de Cantos de Pájaros para Descansar
Canto Armonioso de Pájaros Entre Árboles Verdes
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe36adacd858e892483dcac3e270cd89390173766c705fddec3a63f470df2a46. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:04:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BGA472422118.