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 0x3b3c1cb88e099693abeb7b682888b05cf759a2437dcd2d987d9bf1295e5b4fe0. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d8337f61-6e10-49f8-8e5c-c0cbcce83eb8.json and https://artists.proofprofile.net/proofs/artist/d8337f61-6e10-49f8-8e5c-c0cbcce83eb8.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fba91c7a271d47655d9146e3abbc925eec0e68152402bc70db4d47a78a03a17. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:51:53Z), 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/USTCG1081314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf5cf94f7c3e9ce49aab7b2960dfcf8dadc13e906c078dcd5d8a27cae9bf6d7b. 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/USTCG1081317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe951f45b996d37cdd0b107f96403820402ebd50bd07f666fc178891e11a1478f. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/TCABL1382206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a50185a2cb4a6cb5f69e6eea995fd70e9d9618eda274e669905971ea50c30b6. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCABL1382198.
Los Insólitos Peces Gato (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2b335f51e9eb62f422d855ed6650227883f1cdec949ca22948786d4f1c4b0a. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/TCACX1722765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee6b346325ee08c93476410d210bd699161b748fcdd88d67d692b9038355c896. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACX1722795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa09af9c93c039298686389a5ef23391a606bca676d32a4ddfc358be689caae09. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:17:35Z), 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/TCACX1722798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dcbe8fc95d1f106bfd50a2d227897b8af5ca3f75be88db4a7c9401d4c74ed5d. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:01:41Z), 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/TCAEF1955946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367b90abd178eb4c5d4bd88ebd6a5f1ed94354c7c531371fe73fd70f7548fd5c. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:29:07Z), 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/TCAEF1956695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda47bf0d569a7a9ad5a5d36100198d0d7b7a11bf3a2f8c01ecbd20cba89b5b34. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZWDE2239540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde57ae27e6eb605f3fcbf96790b3e3cd2f64711bb5a776f689742708462a962d. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USLZJ2337320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4d21a134c9e58975b23e3ff233857039d481fce1211ad982dd19df6b4a640a. 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/GBWUL2380357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7a301088de9662f9ade5b7d8f383aed816b0a408a4135c0902557197a15ebf. 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/TCAGH2216932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2229626db9e6ebfd6b8ef75db16268cac3fedab89bb3a39d2f7ed59dc1d6afa9. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TCAGM2231662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9333396707838d6ddfb1fe43bd428e4097e6f582f698c84c582536e0ec6fad95. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZWV32443504.
La chambre de Madame Récamier à l'Abbaye aux Bois
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6740906e62ff50fcf83fb6fd3366a8cadf7153ccd4900409bcaed7ec8b3b7ab. 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/QZTRX2567047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60bb4118ea44c228e2bf170d3d4377712024930177916e8229bace5cd6b541b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZWV32527595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81df2219c890bf738b444a3dae6e48297911590717f06e5af9f6eb0b3249dee2. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZWV32527568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x405786a08cf5b94540629a696449ef37e4978dbed06663ec86874112d126c91b. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:52:53Z), 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/QZWV32527580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280ebc79384b5a1cb304a1e1597ac72998f3b005a9a4f9149a7d90ebdd8e3631. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZWV32527582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cdb0805305d87122087d52e029887936e00d09c7d2ef6fd83b88fd1ff4b9e9a. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:09:55Z), 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/QZWV32527586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60bb4118ea44c228e2bf170d3d4377712024930177916e8229bace5cd6b541b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZWV32527595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104b8fffd2cb20680f77cee18008a33bc6e0a7b643f9efa71d6cfe0a31f0c87c. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZWV32527630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504bcdda866437a488109e77a77377822b728b6c48cf2c6f39737797dc4c9f6f. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZWV32527614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a979fe4756e9438c0f43e49c8fe15d2e1902b9dbd5f94e266cc62af928c9fef. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:19:11Z), 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/QZWV32527627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bcfd17955a6457b1076f8dff4f7a0d1762d0cd9fe102aa37caaeb0a09ece201. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/QZWV32527651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05738b06979d331ad0b726ad31e774966767de44e3798a5b130a8aa136f8633f. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:10:27Z), 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/QZWV32527652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126eb2064f4b354cf760f81266499659eec9e3b6d41a4969fd9ce440390c61e3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/MXF171202961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3efbbb2d74a372942b6309a122cdc47918d5cf85726c69778e649df5c5cb0637. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/MXF601201057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3efbbb2d74a372942b6309a122cdc47918d5cf85726c69778e649df5c5cb0637. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/MXF601201057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51223ede51a39835b5b91e9574e6f19d6f77585b4e6b67ad61da6491a5d6c596. 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/QMBZ92427929.
De Brutas, Nada (Soundtrack de la Serie de Televisión)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbab6042c4d22a3c10237e2227d29db55e4f6da6fec15c46b2517208c748600c. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/USJPL2200246.
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 0x8e4238dc4b1eb7a31cf29aaa13983baa5f300f79f69e0c2f1eae12629f5d87d6. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/QZNJZ2398502.