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 0x7f13d38ba382bd7c7a98bc10b750ab4ef959ce2a40b37a6e8a04604654b8e689. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c7603494-3b92-4d88-ab08-3f3222939cfb.json and https://artists.proofprofile.net/proofs/artist/c7603494-3b92-4d88-ab08-3f3222939cfb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Gilberto Valenzuela Con el Mariachi Chapala, Vol. 2 (Remaster from the Original Azteca Tapes)
Gilberto Valenzuela y Mariachi Chapala, Vol. 1 (Remaster from the Original Azteca Tapes)
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 0x8018f186a1be481a2039eb8462d2d65bc38892e188f6d5974661f39b2cacf39c. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/MXF398900041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1016c9ba5c32c36c4c16f6e7bec47cde2b4e897bc369b8e6da808e9a5a2535e4. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/QM7281553461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0f8e7cd979efdd02d9b550ba6ae0ddf5756c76232bf042714f939ff7f5f50a7. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/QM7281553463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5269488a22abd845ddb232e71b9d9b3f251affc3dca79cc59677f1bf0d5bb9a5. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QM7281553479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4f1616bd9ea4b04ce4ef636b9f39da1c875c31150e635179fb0f74546d963c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/MXF019200682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf62bc7820eb19ac893991d919f4339149d006fd86133e782965f2cce9dc9498b. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/MXF019901019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd5eced51333f661346a9c2a67e20dd2e3855b2b6054da94b5c6dbe4c184951. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/MXF019901012.
Los Grandes Exitos De Gilberto Valenzuela
15 Éxitos Con Gilberto Valenzuela - (Versiones Originales)
Los Éxitos de Gilberto Valenzuela el Sahuaripa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23bf9d8d7b9cc3b7e415f4032ce9db6cc4d255167dfe62e240e8f16917854834. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QMFMF1548419.