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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x428f683dc241f94b3b727518ff8e6687f97526a01643e7b3a4375e839cb83e44. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/080fc5b8-4724-44f0-a067-04c46fb3fe92.json and https://artists.proofprofile.net/proofs/artist/080fc5b8-4724-44f0-a067-04c46fb3fe92.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a0ca87b1729e01658b18057e6bbaed74fa3b30a4a568dcce3be111dca0682a. 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/MXB711701302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe71ce66b8157286223d429f3a8e60aeffd487c6df59e6203e3f0029a5e1188cd. 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/MXB711600780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x085a743405b5e034aab2511578808b08019cfa7b0d9879b8c214f394210771cf. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/MXB711600781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ac25f1662bf8fb9ad9a0a0d14cb9921d56bcd3e1a48d97948643551f03d8ed. 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/MXB711600782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15008664eb8a45daaa239c4dfc329d098fe5ffcaa01ff9257812a2ecce96c3c7. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/MXB711600784.
Popurrí del Violincito: La Cumbia del Brinquito / Fíjate Mi Hijita / La Cumbia del Violincito / Roberto Ruíz
Nomas el Pelo Menea (feat. Los Jilgueros de Linares)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc141814bcdbe94eb7c05f9209005084e9ab5309aa87e9fea11acce585261b0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/MXB711701194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec1ad32a056c1706c1be9c67b093087a11dec0f54de41d8cd9fbf3c7f0ba17f8. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/MXB711701267.
Maldición Gitana (feat. Los Jilgueros de Linares)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b2a4b9d565a1b60eed8d1ac72fa1e97584d5580b932208a765bc527e2b1d43d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/MXB711701193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7644902848a3bdeac448716328784b925132cb1706d8427d6f834ffe08defc1d. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/MXB711701268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb5f2a5533e5c8a943b482525ee5400af515d31a7e34159b01c20b9c36522760. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/MXB711701269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f4d21ac29707b9393a214fa36b2b1f77d712cf269921f902bf472578a90940. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/MXB711701270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cefe9114b8cff3744a5888078d177738163d37289721d5fd9473223dd6c15ec. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/MXB711701271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b39c7b30a3c690959d2396801ab19ee88fe8dc057384b5457ce561b9a1cdb7b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/MXB711701272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x870a7b68560fefa1bddb77010f1e81c675e2b1d8fbbabae7b74dc3cecbf27e02. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/MXB711701273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36188a6b24ff6c4c63d60310316eb90d7a0f8ac6e78e85f36bb92796feb66cf9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/MXB711701274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x936b725b5784e450297dc7ccd93dc61ed69a2cb14c44578d684072f0fb17591f. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/MXB711900045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f7a6545e4a1b09d80b23e9b929cdc812fa86c74e056c42b81bf76337bb49b37. 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/MXB711800291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eff6a8b1b44d399ce113ccb9294c8e44dbee5eca1675c0292bbd70c646ddc63. 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/MXB711900122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8b5de8f3d36ea5546d090ad8bb1d8f2f0b75e1fac784fe28dc062ef070038f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/MXB711900125.
Dále la Teta al Niño (feat. Los Corceles de Linares) - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c5f8b0f33919bffebacc31bd19893b9c807756a7b7fcee5f2b1363387a97982. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/MXB711900339.
Tu Pérfume (feat. Imperio Calavera) - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc990074053306c4205ac0edaa7ddf8381cb36ea4e363f97d505c616e2ab663f5. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/MXB711900344.
El Congelado (feat. Miguel Galindo) - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8502b09e37175690dc8efb79355af412eaa990c7e9785bd6f2295bf6b427b9. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/MXB711900347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a5e4b1411aaeb0da60e2e268d2c77b8eb9dd2dbf6b97cd9a6133f3c0e72370. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/MXB711900129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee3b927214abde679ec225db5c55023034274b1a3049b83413804860c1a481a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/MXH152100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400233fd37ee7a14bb50bb297ae08a3dae60350724cf0b065b9873571b23613c. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/QZFZ42437670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f703b102f7dc5eabeccc6ab5caec5e5cc38c3948d602c1360305cdac435f3a9. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZTBE2491228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32cad1aab71d57e21e3c008ea24f64a2623aba4703e6c5927aecfa87e2ca005c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZWFW2542434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059887bdd23578d78e9b8e4caf4ca4ed59226af496fdaffd16e026a4d3c93c8e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/MXB711800120.