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 0xb5d4f9eddf28cb708b6ec40efdcc0df385d8d9a0b856b73c039ede91666e5c91. 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/6b359a63-64c5-4615-83d5-c32dd00272d7.json and https://artists.proofprofile.net/proofs/artist/6b359a63-64c5-4615-83d5-c32dd00272d7.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 0xa8c2a822f737817391a334a7aeeb32b227e83286a3efba7f0c672c735231e738. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:21:44Z), 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/QZHN61945787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8c2a822f737817391a334a7aeeb32b227e83286a3efba7f0c672c735231e738. 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/QZHN61945787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06187fbeb01dcadaf705a846ea858e829130bc5eb6c5186efc81bd8a27974ac6. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:01:27Z), 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/QZHN71967719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d49a809f86a7d836892cb762eca59a17850bc40fc244afc8e30eb465930566c. 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/QZHNB1997026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x310fddbd8984f910deafce6f0d8be6afacaae4867628ff6af6e4ed1afc645477. 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/LBA0H2001110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c15341a9b4169f7c1caaa653373ca7db931ca175fedce9c0883403e0e489075. 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/LBA0H2001487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x751b17b4c1d359e76e430189ea9899daface4995668958dfe88fcae778809977. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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/LBA0H2001207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e69a85763ea31dbab984a5862945d8ad6b3553892ad41ba298dcfb0365d83c. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/LBA0H2001488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e73fcfb77b883bfaa4f0bb886fa49a67e64928c167d988707512b84aded6bce. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:48:57Z), 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/LBA0H2001496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56737ba5a6b0e2caf3cacf5cf29f10ba166df7f6470acb66a6155dea2856c9c. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/LBA0H2001158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314467866e3618790c71ca894f2238725adfb920b4f21194dabed33265798409. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:08:07Z), 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/LBA0H2002445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7309c6abbe25c007fca5cdcc313a0aed8aa84a8e852a541e191c21efeb37ad6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/LBA0H2003535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a22453eebddedd1d1d2fc685590099a2c24e34722049ff3a85ccc8b7c2b6463. 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/LBA0H2003564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f797c75ea90f242c5fb9b2d0fe6bf84a9f08a38e4203b9414590e3a9bc3e88. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/LBA0H2003737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7bbdb3138a40c813d47b2166a25534ef7ea49904acdbb2a1503a4ba8144dd57. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/LBA0H2004185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7781655d88c6eb46aeb0d1675183c497b5aad273ee4aaed49b5d3c5bc9b5414c. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/LBA0H2004416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a497c035bfe91821e5968cc975de24a495dd65687416b000d274f83c85a93a. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/LBA0H2004828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea8b7ad8fe6979dd32002f41086a6933e20b9f36d91a3f0f62bfcf9c5e08e522. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:22:34Z), 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/LBA0H2005571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55a62152ad5c97d5e30ef32efe87c29e1cbf4648ecfb7782adde209d65f180c. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/LBA0H2005677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027b5c94eab40a04c4a81a64a86322ff32478cafaea97ed9598b7458ee7b3596. 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/LBA0H2006545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92cedcb858596d9cdebbceb9b47a1a1bfda7c84fb658fb30387ac780714cf7fe. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:31:36Z), 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/LBA0H2008239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c3404877fe7f959c632bc2cd3290b6eb46972ff14b6c9903eec72275726126. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:27:59Z), 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/LBA0H2008365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71da5f53c03974dd9594aaf7aa25aa91d371c86a08716f7fd5a8e21ea74cb726. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/LBA0H2008532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd272af29f523d409b00e9c9f31937771ca9c96cc15f3d0e7a3d9f1781a59994c. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/LBA0H2008808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6097f43277f6efd292dc86c89d4b006f907c48d7cd5a2702e6fd607c644f0f08. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/LBA0H2010254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2955a16f7668ef38f2e9404a46739bc486aa4e752dd37ddd65dddebbf21f61e8. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/LBA0H2010417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c5fbb80c50a4f664310c2ef223694bf41e414d36e86ab91e375c9cb324b146. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:17:59Z), 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/LBA0H2010473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de092bb64837b3c04a5bbd17705ad32089a3a4fc57623f9e8884a2f5401e66b. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/LBA0H2011133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c61cbc38af77b989b5d1fb8058aa6413663f014d16ed95be4dbd67e73f7a327. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/LBA0H2011132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16a96b6ff53d22ca7c65fa773eb8789129478b86e1347fafea9b4e601310fad. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/LBA0H2011522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c5abb17b85a4a93842f756702a2ec013ab3c46d391ff3d0b595e1cc7595422. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/LBA0H2011242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef0a2587bc3c1d495186d818c28990cf8870c42293ca803a529588d32277a57b. 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/LBA0H2011349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdecb68c8883f75705d6a8a88027ee13d2e967157454bb88590ca5b72a60bb513. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:49:21Z), 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/LBA0H2011523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af4b1b7514efee0aaf6242305a25f24c3b9d2c15f27bfd163da5d8772766811. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:37:31Z), 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/LBA0H2011524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd659a62f28e88ca28f0d7e0a1639fcad1d0e55b1339c4dee71f13cc28755f229. 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/LBA0H2011348.