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 0x147de8d9864e083a62cbfd69445b0a6a5ecfcd5792fe0dd030bde462a8eb1bbd. 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/f6601e42-54d6-49b2-a22c-4569e1d6175d.json and https://artists.proofprofile.net/proofs/artist/f6601e42-54d6-49b2-a22c-4569e1d6175d.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 0x09f9e7b133826ee885330f18c80bdf4757b0a97257719cab561101d8e1b70a0d. 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/QZS7J2168429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4823379276ef5af262eee6a6f66ae201e1bbf786bccb3f6ded3eb34eb805f569. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZS7J2153728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46cbcbfe587540f1d2c1dad205bb8c9d394ec52c66ff72ba6edee0f7b862adb6. 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/QZS7J2138921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e73ff2980faa26cb3424c5a8b296273ff63f4863cfe19fd528e0e1b288646b0. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:33:07Z), 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/QZS7J2101552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc295a6aa4ef10efb897d3fa091788cfceb91165c11b252641d93fa7542e57aab. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZS7J2142964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b0198cf59119c8a149bb2f6b6789a74509c2ee6ef7c26e910c07c8d07b9abeb. 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/QZS7J2123021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f7bc336a346067c30a6b3dd4ef4427199b2f90609e545601b521ecc6a9bbc2. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T06:58:39Z), 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/QZS7J2198830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6c458705b0fc993a8206ee35b5e11274d7f831681b782de3f9ef8166c902be. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:45:01Z), 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/QZS7J2193607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb0ae5549f58c2a70748bd7fca5afa0b8d4d02312feee1cdcf3417286bc3be7. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/QZS7J2191052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa30fe9957a2e22b2c897b366299e071b318c3caa4baac42580d064f3739aeca9. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZS7J2155083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x897418aeb21240cb8b90d62cce8e1f9a5093d6876bf315c8d81341081e5a25f5. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZS7J2132906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f59a27b005b30224a516fc18b45c2561c97d6a188cda4980482f928ac46c78. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZS7J2171455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x867f0af51bed15b117aa2610a9c147093e18fa155c8c3d2c770447498c7d2794. 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/QZS7J2149640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93fe12428ce7ff06ea442fbd38b3f844c79fc71b9510aa3d025cfe54eb038cc5. 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/QZS7J2103723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8cc730565b959545a905badad0bb234400857cce46da81f4ca34c1a607a4073. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/QZS7J2123690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa44b6175597b13f2321d43bd065a280ef34f7a38ded31b49d9b8ed8d816728ba. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZS7J2142317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x682e6be93e8b840a83287abd5135aa24d056a3b63901525ec24497fed6ed4964. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/QZS7J2142873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ffafec05b0a5affcb90e51c8cd27913fe604f69492c78d030d3c020f1fc5739. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZS7J2192039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc352428f053a378418e8ee1357893e2c3ce51ab0d31e4790b3cd5773861861. 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/QZS7J2124395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbcdd7bba4ccdc5886b14e89b6e574c2e8916ef591aefd63ae2716604d7a4151. 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/QZS7J2146154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b49518794cd4341eb45d308e2ebae1ec5261e332bfdd5dca0255fe557816794. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZS7J2162359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91006003ea483ac4b5caf3162a9bbaece0ab8eecfe83f179f3f71d3e42c52e3. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZS7J2155559.
Voz y Canciones Orgullosamente Ecuatorianas
Colección del Recuerdo I – 25 Años de Trayectoria
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e4cf3a93f4e103e5d8abbd30a74faa7c872f9370860f1b515abbad49dc9926e. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T08:03:10Z), 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/QZS7J2124070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0d501a4d6b1dece0f3f353a7e9dcd783a0a5520823749513c1f3accf00b902. 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/QZS7J2102959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d35787c4cb6a68664db37a48b9f19c21ccc0ef4f6f6966bb807dd29a38fc52a. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZS7J2156617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca8d424587d824eab6fcce87e42fc52a24ae433828a3fe6f08ffa2a52d32b114. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/QZS7J2178953.
La Embajadora de la Música Popular VOL.22
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bbb52d48c5f504364390b3b651418e5f8044dc3a87dce7f68b7d3dcc4a81948. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T16:53:21Z), 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/FR6V80201524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea33b7450b2988d4a330b95db3c9abeeeb7d5983d248dfb926e605364d7d302. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZQAY2376186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55518ae609746246cb90cdd0ce45d84e058f613e10dcc23b280f4c269d238e83. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZS7J2494978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc55b8b7d2f97ea942982627b4477db812dad19f0b0d3712c3b01b794cf2a17. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZTLA2568452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8066de289c127f79bdd85b4abead52e9e662de6f99a6d36c680f45d3f0a413e6. 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/GX53U2644350.