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 0x7c6d476afcd1027a6d48edfeee899b3fc590a4bf806a211a086093a35ae78d65. 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/3cc08350-f99b-4fc8-b478-8f368371222c.json and https://artists.proofprofile.net/proofs/artist/3cc08350-f99b-4fc8-b478-8f368371222c.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 0x4af6431a17f5bfa97e7475b2532e1a0380de07fc03de610fbb24663b91fe7806. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/ARDOR1800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x789545eeffca87312d9782aa52acf687c9e663a61dc3b86d7b833eee4338d5f2. 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/ARDOR1800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e0f3e21cb255a306a4ccaf17d0f16708b691de717dc7504a3b871a7427a3efc. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/ARDOR1800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd56761ec8cb053e1548ca562010c74cdf63683f95a8a3cf617a86e3b5732c43f. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/ARDOR1800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd09c8397003c9efb2f56e5b6829738c96b28e7edbf17f3c2679391960a2c5c37. 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/ARDOR1800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde964b06efd285184637551295f7535473894d1a3ebd8da9882bb31aca7b424. 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/ARDOR1800014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b87d290a7a88b99d45e2dbcfa3ea6a9aea3ccff8546ce3159edd2f6cd046daa. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/ARDOR1800015.
Luna Nueva - Sesiones de Estudio (En Vivo)
Tres Deseos - Sesiones de Estudio (En Vivo)
Tres Deseos - Sesiones de Estudio - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171a2e5cb50d9cd26103d25a56af7e8b53bceca626e295607ce111e30ad08cef. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/ARC572000667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f833ee3d165b0568385984bcc97800189120aed91ec028d337435c1eec9b20. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/ARC572000785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621ca715e5818a30b531de8b8c934fdaec97def7bc2110ea9e951e8426c92235. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARC572000786.
No Se Vive Feliz Comiendo Perdiz - Sesiones de Estudio (En Vivo)
Tu Culpa - Sesiones de Estudio (En Vivo)
Tu Culpa - Sesiones de Estudio - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf24dca9aa6e87a6a517dc2fac29d244a7030a1327a5b8ffb290246e8bd2c8b. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARC572000788.
Duda Morena - Sesiones de Estudio (En Vivo)
Duda Morena - Sesiones de Estudio - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650583f4f4340a8ac6a2e7426fafc38875ef224b796224db0e2fba4a9034accb. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARC572000789.
Sesiones de Estudio en el Jardín y Otros
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadae5b59b4fc09e38219605c88f4d7f652a95f6b7cd75863d47a4cedafe2a518. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ARC572003811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7593f084c5908e6a1213037920a07be53fb5619ecc0a63433ef65bca7d4ca18. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/ARC572003813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2a2e11b69486d165ea9f101d9ffe5bfc00fd6ccf77cb9e8a7b63dabc2bb005. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/ARC572003814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e52765c0c701c45463af3ee19364ac2f2ca4a52523fe4510cafee2739ced0e. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/ARC572003815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c45a4f7c804a530db0dddb349bb3b1526c1331b244116e5c02c4d84cd4ac24. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/ARC572003816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f702dee82955b07079deaabb05b6c02949996f109b2e4bb30aa6cd9a57e896. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ARC572003817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ee04d1846c0e2936dca7c4e81c3006b22bb3b740e94239b9ee33a3a6e564b1. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ARC572003818.
No Se Vive Feliz Comiendo Perdíz - Versión Acústica
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87e4a9cf720df3b19b1f784462aef4714d9e164ede9dad37fdc8dc2cc274ba55. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/ARC572003819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a3c72440be30225ec676a2e51788f136c90061ad7fbeafd252cf6a71ea03a6. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/ARC572003821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e04e26462292cd3e96f05ba37f0d63382fa8e6519a8ae80fe7363f8f90ecb1. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/ARC572003822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb9004bb1bc23d72ff37e917c315f8a7ff45e0c9ba9533cf46490fa5022e591. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/ARC572003824.
De un Minuto para el Otro - Sesiones de Estudio en el Jardín
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3557618d099a95881b111bbfde0bac44ae51e4d36b29c47823b509f2e6ae1451. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/ARC572003825.
Mil y Un Colores, Pt. II - Sesiones de Estudio en el Jardín
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8264ff85396bcd535a99e87dc72519acaa8570f55720b2da663db0e67a98a654. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ARC572003826.
Libros y Pantallas (feat. La Mari de Chambao)