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 0x0ab0a708d911833a5c8ddba07fc203e499e2e3d115427010333023d59b695018. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e0e913da-c844-46d4-964e-3eba551fbc3f.json and https://artists.proofprofile.net/proofs/artist/e0e913da-c844-46d4-964e-3eba551fbc3f.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 0x2264065b70b7c4b1736d7701de5ce351c1d41a2a47d49a0bee45679dd5f903ab. 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/QZFZ31929596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314f115ca54cdf738795fbabc85e2c13e9c0c22c77634a4e574a5bf4f2f7d3cf. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZQMB2106221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07ea1576b402f58057106d8e45f3e4e6cf2dd0e3f11d7e8a9a94aff30e805ca7. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZNFJ2404901.
Las Que Más Pidió El Cumpleañero (En Vivo)
La Tecolotita / Rancho Alegre / El Corrido De La Noria / El Toro Viejo / Feliz Feliz - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55fba85d60772135ac829de36ceb99c2ff7fe110ab4a742147ef56af01eb964b. 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/QZNFJ2406079.
Pobre Ranchero / El Parrandero / El Becerro No A Mamado - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a2602f11c67dda7940cd4bd6eaf9bf193a11d4c22f0dd3775b217f287df2dc. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/QZNFJ2406081.
La Mini Mini / Baila Esta Cumbia - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59f194758d48dee0595671c3e868421e637cc104afd1676439fef643c7c6a621. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZNFJ2406082.
Intro, El Coyotito y Una Palomita - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47768688daa1f541aac3300559b7bd59210b48717ef0b85f27b107b2131ef99. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZNFJ2504179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48dd92c01ee332f7464b0df23ac2c1b84b4d5f7cbeccae2cb37372678d99753f. 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/QZNFJ2504180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc57f9fbcba3e5bc8c39e07fadec6d497c4a04d10f790796fe528a3223272734. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZNFJ2504181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5292bf172e8a433dceed100264bc713aa45bfc7e63e66f4de5f1a4cc2b5733bb. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T04:30:07Z), 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/QZNFJ2504182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3509775b5b1ead5078222674c6e447705f36432eae15d681bd744f803dbe55e3. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZNFJ2504183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e438e550de5a654f5eb6c147b5cb0357d7637df23c3d1ced8f5ccb9a5f9901d. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/QZNFJ2504184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b2c3fb149588c1a85d24b95e882acc554583ea0c22f17520addc58421fc649. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T15:41:47Z), 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/QZNFJ2504185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07aea0d19884a584822738a0a9d2fd0056a6bb72f034ea785cb8e5fd51e6cc12. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/QZNFJ2504186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51b53c910b6648a7e2284fd954d119b568a5e75b24530659a2ba7bb2dbe0dff. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/QZNFJ2504188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34bfd4c788cd551cf61d998e3d99773480a2257b4a5f89fffff8f1e657b5ddbf. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/QZNFJ2504190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132e8282d4428e1d9460b2f5834571f90d2db7feba55be291ac70a99384fa1f0. 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/QZNFJ2507432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2d9b80c0867fe806f083afba1a241bc5dcf4f10f92111083436c837699a18e. 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/QZNFJ2507433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2fca60fd72a35ba6b387b7e2c702413f846641273478d0b302f668cc2c6a9ae. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNFJ2507434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84286b05192c4e58cbc0e89aa8a9c876b6238f70a6f1c8c1aa13f487cdd9eb64. Chain 2 (Bitcoin): anchored in block 958656 (2026-07-19T04:04:08Z), 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/QZNFJ2507435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ee1199fd9c17957f20f770be98f81d8ffa1fdb6c1b814c8606e2d5d877df10. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/QZNFJ2507436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d423460b42b5074e3443528eacf057065b3422be0c7bb7b2a8ebfd843a67be. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZNFJ2507437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5823b211b0ba50aefaec703cb136b5780850f2393ed8ef0e5eaa3e78913fc53. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZNFJ2507438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd3589fadcd3cc60d3b08c99ca3a21100a15823ec497d33fd717ffb4fce2551f. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNFJ2507439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37164e4211ac93a0d841c9c2cde19e4fce77dce7a1c7f1ffd30303f1bc798532. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZNFJ2508267.