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 0x26d288316678c1850e33b946d3584d888337512318d5cb59564a9b86622fd71d. Chain 2 (Bitcoin): anchored in block 953610 (2026-06-14T07:58:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/14480c15-b747-4160-9405-617efd7b65ee.json and https://artists.proofprofile.net/proofs/artist/14480c15-b747-4160-9405-617efd7b65ee.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Merengues Típicos a Cuarteto en Vivo, Vol. 2
La Jugada la Señora de Alejandro - En Vivo
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 0x7e85509bca13ec304255d010ff2a6b97a9c55fe565b76f0d02f5eb90f2fff88c. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USL4Q2043395 — a six-check JSON result.
Merengues Tipicos a Cuarteto , Vol.1 (Live)
Merengues Típicos a Cuarteto, Vol. 3 (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b3d8c9bfed7eacb862b0990a75e8e475a9bd689e34a4a75a1cb44f5290db48. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ5AB2153805 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fdc04ceaecf7f3e55e9d20ac97d8ae1ded26609e0b6486ba2cb08aaf817314e. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ5AB2153817 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a8ee72816b244e28cd695a5cbdd72e238dc59a5d71214580d2203458946661. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ5AB2153819 — a six-check JSON result.
Merengues Típicos A Cuarteto, Vol. 4 (En Vivo)
Merengues Tipicos a Cuarteto, Vol. 4 (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8122153c35990b050d0a7fcd43c4bf559eb59fe1565585790c0e9afb42e08608. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTRX2218330 — a six-check JSON result.
Merengues Tipicos a Cuarteto, Vol. 5 (Live)
Merengues Tipicos a Cuarteto, Vol. 5 (En Vivo)
Merengues Tipicos A Cuarteto En Vivo, Vol. 5
Merengues Típicos a Cuarteto, Vol. 6 (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ae9ae87e72a603f376901339b554436396763e066712b8ac638c8e7d07474a. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ5AB2327111 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c63456dc9e5686c36a9401a3ceb8369ad480c4816b5c430f1cba99e68441f8. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ5AB2327114 — a six-check JSON result.
Merengues Tipicos A Cuarteto En Vivo,Vol.7
Merengues Tipicos a Cuarteto, Vol. 7 (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5f2cd325ff22f7970e3ae480b0557e3a6130a8d932a1d2b228474a1981e839. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLZJ2305772 — a six-check JSON result.
Merengues Tipicos a Cuarteto, Vol. 7 (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c6ffdca325460c82e542004f24ac27057806c9020d686d359f1b01c59b88857. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ESA122506239 — a six-check JSON result.
Merengues Tipicos a Cuarteto, Vol. 8 (En Vivo)
Merengues Tipicos a Cuarteto, Vol. 8 (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4edcb4780459f654a1e2e41bc90f7e8a14e7058b9ab3acc9fff45994a2af4436. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ESA122512972 — a six-check JSON result.
Merengues Tipicos a Cuarteto, Vol. 10 (En Vivo)
Merengues Tipicos a Cuarteto, Vol. 9 (En Vivo)
Merengues Tipicos a Cuarteto, Vol. 10 (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21354262e07a97795900b2aa38b359de6d78ac9af421db96849be000ecb001e5. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ESA122512987 — a six-check JSON result.
Merengues Tipicos A Cuarteto En Vivo,Vol.10
Merengues Tipicos a Cuarteto, Vol. 12 (En Vivo)
Merengues Tipicos A Cuarteto, Vol.12 (En Vivo)
Merengues Tipicos a Cuarteto, Vol. 14 (Live)
Merengues Tipicos A Cuarteto En Vivo,Vol.14
Merengues Tipicos a Cuarteto, Vol. 14 (En Vivo)
Merengues Tipicos a Cuarteto, Vol. 15 (En Vivo)
Merengues Tipicos a Cuarteto, Vol. 16 (En Vivo)
Merengues Tipicos a Cuarteto, Vol.17 (En Vivo)
Merengues Tipicos a Cuarteto en Vivo,Vol.18
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161740f14af813e491610b8d2cbaac887d8d4ea2c10888d28181a45df136d8c3. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJV2471418 — a six-check JSON result.
Merengues Típicos a Cuarteto, Vol. 19 (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0812b06d0e2c320fcad0f33496aec52dad47c189ed95339e345bd25cdedd290. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZW9K2434608 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fdf662569f33eb9764ca6f46a98bfca422532199e55c620dc34b1c2f68befe8. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZW9K2434611 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab24d23c00ba5fe77c9366b87d41ee3b53080b6bf6034d8c3aa36acbaef3fa13. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZW9K2434610 — a six-check JSON result.
Merengues Tipicos a Cuarteto, Vol. 13 (En Vivo)
Merengues Tipicos a Cuarteto, Vol. 11 (En Vivo)
Merengues Tipicos a Cuarteto, Vol. 21 (En Vivo)
Merengues Tipicos a Cuarteto, Vol. 20 (Live)
Merengues Tipicos a Cuarteto, Vol. 20 (En Vivo)
Merengues Tipicos a Cuarteto, Vol. 21 (Live)
Merengues Típicos a Cuarteto, Vol. 22 (En Vivo)
Merengues Tipicos a Cuarteto, Vol. 23 (Live)
Merengues Tipicos a Cuarteto, Vol. 24 (Live)