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 0x2c25c71700b8ebd9b42987779e8807220105588c9362a8deb2144bcf9542286a. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4be90ffb-5f9b-4106-add9-f646db688119.json and https://artists.proofprofile.net/proofs/artist/4be90ffb-5f9b-4106-add9-f646db688119.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Fiesta Navideña (feat. Mariachi los Camperos de Nati Cano)
Fanfarrias (feat. Mariachi los Camperos de Nati Cano)
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 0x524f5da10b557c9ceccefc64d1f07d8d48bf074614343f85c4c9c6b1f230472e. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:46:03Z), 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/MX4911300017.
Filarmónica de Querétaro (feat. Mariachi Vargas de Tecalitlán) [En Vivo]
Sones de Jalisco (En Vivo) [feat. Mariachi Vargas de Tecalitlán]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba748753fc8aaa3e1833e03c831bb5a444015317f0bab290853546b1b531209. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/MX4911300073.
José Alfredo Jiménez (En Vivo) [feat. Mariachi Vargas de Tecalitlán]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81342c8bd47563487260b702a9a87bc0f9da591a45a5fc5ac902c09ab8c771fd. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/MX4911300076.
La Bikina (En Vivo) [feat. Mariachi Vargas de Tecalitlán]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0008388896186dfefee3835b213698f5693b8113463fdfa6764684d3f634baa. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/MX4911300078.
Popurrí Veracruz (En Vivo) [feat. Mariachi Vargas de Tecalitlán]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d121173857d155eac685cca78c96d2dd22bdea1886163b2e4f94f5d7e50edf4. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/MX4911300079.
Por Amor (En Vivo) [feat. Mariachi Vargas de Tecalitlán]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500314d9c247a38d37e7d9cb91604fe2f092e1c58b0ad14f1fe84ab58a0ca062. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/MX4911300082.
Huapangos de Rubén Fuentes (En Vivo) [feat. Mariachi Vargas de Tecalitlán]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2bcc6d9b53c72a46ed44684e8bb45e2954ec9d0f16c36e177be4e3ad05b6c8. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/MX4911300083.
Concierto Veracruzano Con el Grupo Tlen Huicani
Recuerdos (feat. Mariachi Los Camperos De Nati Cano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdff99a27cbae98f2812dcaaf586f3ece60fdca3c83b3e62bfe72b233fb73f2c2. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/MX4911300090.
Tres Conciertos para Piano de Compositores Mexicanos (feat. Arturo Nieto)