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 0x4e8f597f144565799e3df67ae38d912e918e0efb5b736edb36b1214071028574. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/70d518d4-8cc3-44d5-86dc-ed10397bd88b.json and https://artists.proofprofile.net/proofs/artist/70d518d4-8cc3-44d5-86dc-ed10397bd88b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mix Chelero 1 (El Triste/ El Solitario/ Entre el Amor y el Odio)
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 0x27e2a335491de3038191d54a2d819668d7782e71fcbecc713b4f783f9aa66b5f. 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/QZTPX2255853.
Mix Tropical 2 (Que Puedo Hacer/ Veneno para Olvidar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x555fd0db1382a0315074cb60d3264e61176eccb501fc2b8939ca803b3bca6f90. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZTPX2255854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4fd6fc46ee2a064d9a685aed102d3f132d9da64e47b4c8f5247792095872a17. 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/QZTPX2255855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab8eca83f2f72907fa1c8c06142cc49ae9a353ade1b94486b6b99251bc40a31. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QZTPX2255845.
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
Mix Romantico 1 (Recuerdo de una Noche/Déjenme Si Estoy Llorando/Hipocresía/Voy a Pedirte de Rodillas)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d0999483617354b40117cc1166748a5a33c935e19f34d28a3eeb9df9842a78b. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/QZTPX2255847.
Mix Medardo (No Existe el Amor / Olvidame Si Puedes / Por Tener Muchos Amores / Salvemos Nuestro Amor / Con Paso Fino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168c542c10c293bf525f07a039e560c8d7c16fbf8e8602b0893db52301674d62. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/QZTPX2255849.
Mix Salsa (Vuela Muy Alto/ Y Ahora Quien/ Juliana/ Probablemente)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a2d59f721909c150298588c03f5d27f6eaa02943f61a07ccdbfc496f33c028. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/QZTPX2255851.
Mix Romantico 2 (A Llorar a Otra Parte/ Sueña)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e6bef025f222142653fe8aeeba74df073770ecc7286ad7562a7407c2e9714d. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/QZTPX2255852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6495600e15ad468f02a9f9a3a07fcb584ac7f5183fa4e871a5bab22b6e60cd. 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/QZMZ92080232.