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 0xc7344407f7595f4a5471528c2483322aadf98510161fb7ff0d34d931e4897545. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0f9532d1-1468-491c-9823-c1cc41691d45.json and https://artists.proofprofile.net/proofs/artist/0f9532d1-1468-491c-9823-c1cc41691d45.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
A Clavelito No Le da el Santo - Guaracha
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 0xe4d57f9cdc2a7a0cbf4e608cb1a419e46aebfb2f5bd5a76e20e3d1515bf4cc4b. 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/QMFMF1386093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5656797845b1ca2b07f65b7b1ceb18e75141ba28f666f78a488789fff4ddbc8. 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/QMFMF1386101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca697c1d39752fcbf681f4e58349f68d37d818f3d95f5aebcd0f59aa1c361d51. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QM4TW1559591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835dbfc8c4263913e16da9f0a1c0c825e1604afa22cf6b08c8fcfc080196d1bc. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QM4TW1559593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a6ed957dcf5dc5cc059f6223583eb3c8275bb5df2c964604ae4154e59e69762. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QM4TW1559614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031e1a878c9f73349dbc66b973cbecc9d144dff753d91d99991c1bc7dc7ebfa6. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/QMFME1333721.
Las Mulatas del Cha Cha Chá - Cha Cha Chá
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde21226219672ae3d6f4ab5b8af4da322ab66b8cfad5843d2672338e529ec038. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QMDA71301066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b0bde876c6e73f3bfdf554113d743b89ad858ad7970a24040a7906aabed572. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/US6R21396120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x380659dcd240d7b75d14c7fcd2a35c633f2b7725c2bb9330cbc8b31e7416db36. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/US6R21396124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf3f55bc4a28cd277f327e079fa415497782c84968ba850c97f348fb497a510. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/US6R21396133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31148aabe99767de2606a8640de66f19c89713c024158002d0044c8c0438b36. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QM7281468702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a59bc7838b995129d7a3939455e8c57fceee4cf764a8ad52152222377bf001. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QM7281468703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b1610ce78f5edbde7d40d8a8b1feff8b47252d5bd7697a462a01783156d9f44. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/QM7281468709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eff24108be2f511db5f3d15c290b0d0cfe29c6201f4eb705f84283cfec4c2b4. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/US4XG9404983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x482d3dc523aa47c63734bedfd55812ab8af63f07db66a31f18d577af5885b785. Chain 2 (Bitcoin): anchored in block 957210 (2026-07-08T18:28:05Z), 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/US4XG9400565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb764a315ab2f24724911b81de8aef3997b5d1e6734e138101e5046f40243f8d2. 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/US4XG9400568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1532f819da2fe520c001e1fa71bbd6367e851a38b83e54757f2016983d803cc9. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/US4XG9400571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa59ac03186b82dab3e618b4352f2db5008dcf6e84709ca1b7e60e30e96e807b6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US4XG9400572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbafb6549ba504de0216150df99df3234943172938d1e2fc38a00f1a28877f527. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/US4XG9400575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa524f0c13c3c341c65eee7c65444a32d47d27ed6b35a4f84022fcd2a144569b7. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/US4XG0407861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1356b903e460c0c6d17454ee0b271338d6780556b4a0ca3c4ac4c9f0dd578eb. 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/QM4TW1578615.
Salsa Caribe 100 Rumbas, Merengues, Guarachas, Mambos...
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a06ac2699b51a0bfac8a4890ade8f4ac2ebcc969e1d56d1825a68b1ca7404c7. 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/QMFME1497074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e24ac2461cb14a8aebf48d3cec588c214674ba805b3a4bb454519746899b9d. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/ESA031310416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b7cb04262f9ae81d23c5dd832da42f16d7dfa2e99bf811818f7d460a8c5ec4. Chain 2 (Bitcoin): anchored in block 960355 (2026-07-31T05:49:18Z), 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/ESA031310419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ea8ed2bfab5e8a5c5fc8408b0e8dbb0719ed932285877c943695193ba4ef8ca. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ESA031310420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57437df3069b60793a22c3f24e6c9c1e3624b3995a64a97981d658a6f9073a1a. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/US4XG0302465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x921902f7e666de3d9fad2b7483fe2163f3631e8eb9de3f91fa1657101284ee77. 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/US4XG0405519.
Homenaje Al Danzón: 100 Años de Musica Cubana (1879 - 1979)