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 0x0223f1d55a180492689fdef1841de7681737dcbea9d2fbc6acc10d1dfb528c61. 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/79f67042-fc6a-46f2-b29e-496722922990.json and https://artists.proofprofile.net/proofs/artist/79f67042-fc6a-46f2-b29e-496722922990.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 0x25144c857352795ff757e1bee486a8570cf70367614b2261a4e41fd455bc285b. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:43:25Z), 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/SEY4Y1205103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28507012624eefc2900fb2a5098770af8d0e86b6f33f347e7e70ac960e3a01bd. 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/SE3651300101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96dd1fab09325543a839e63d8b64c2d30dc7875e1d04790254429fc307ab2e00. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:35:25Z), 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/SE3651300103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc0f396bcfa4fa2a5826a9f020ec6d7e66e2dbae8179738e8d32a257159d68a. 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/SE3651300106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x147300ee022f3a82d816887ad29b0a32c341a3cd8e6729601713fc68465a640a. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:48:53Z), 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/SE3651700101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c321e1eada84f17d11c3adb81ee2aecfb2c787922e297c936248e1f8bb7cca. 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/SE3651700102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef7aac0d76c230909822f04d542459b05c7f85b1bf4ce09bdfa558508da4645. 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/SE3651700103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa1244e20ac0348ec8de7af897b5000d6de314161cf5f48de1a5b574fc49a0c1. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:35:58Z), 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/SE3651700105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6464f71b98f6bcc9de24cfbfac8070b8c1c08e55808942abbfb14f5f3d0c226. 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/SE3651700106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e1220edf35b0c38126760d5a73295ea47d3957775050b5441f7209bd7e6001. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:51:19Z), 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/SE3651900205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7166ea8ec54e60a15e66f91ce47ccae60f8519c6f7cdcba6c1d529e37472bb7. 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/SE3651900101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39c5432d456d6fbe33377fe7a47ba007cd1bc16f9397b62476079f6ea6e88f8. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/SE3651900208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc258cd396c0b7113bd253f69fbbf9c61ca7fcc5206b7d9d23033be034bc04477. 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/SE3651900209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a77b538f8b6ca5b9f130ec49ac7ceaec0853c9f8b76f8f3e76224cd9d867fb. 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/SE3651800301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f107e9bab77d6d93c26ac91a2a78c71e38879f831b0cf3578b2894a2df270b. 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/SE3651800201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4815cfd036caa35986da5e3547caf3dcb62caa93a740e4404e40067a895a5abd. 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/SE3651800101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x257908afaf7569e759910145cb7b427c3f3af5f0927ecb18daf1e3380f08ca19. 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/DEYO62100041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c3918a245850b9c94309a3ecaa410b433d2846162dcbaf80d6b367565840ce. 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/DEYO62100039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88dfce26a4f0e8e435599af86fa851d9ef0b5e6b6b56be6eb2b030c1373c7b20. 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/DEYO62100036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4485365435b6732ed7c3b3d885e0133a6a53c59550f43767c5958cf0bad057a1. 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/DEYO62100038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e507dce096c6a9d0f5b63982015550b797e5cf492b2726cf693704aed0cdcf. 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/DEYO62100035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x257908afaf7569e759910145cb7b427c3f3af5f0927ecb18daf1e3380f08ca19. 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/DEYO62100041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ff33ae9e7ada90bcc101dceb59c07bc3fd2361b90e8cd36f448d6541356f15. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:05:44Z), 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/DEYO62100040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4485365435b6732ed7c3b3d885e0133a6a53c59550f43767c5958cf0bad057a1. 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/DEYO62100038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d94c206584e768e032ad494f3f3d46e6c23e49a2612a803a18836be113d207. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:41:37Z), 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/DEYO62100037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88dfce26a4f0e8e435599af86fa851d9ef0b5e6b6b56be6eb2b030c1373c7b20. 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/DEYO62100036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e507dce096c6a9d0f5b63982015550b797e5cf492b2726cf693704aed0cdcf. 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/DEYO62100035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107af1eb3293f31907acab933d6ca060b29c8951a84c33a5f6038e3f98a9d618. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/DEYO62200056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa9960dcb6f4fa7d2e1edd375c9188a754c2f05fbbf9ce2ab40471e4dda188d4. 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/DEYO62200222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99f4a0c2dd09b00001aac07a8c3d55a937b2d094fd82ee64f4c974138def31b. 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/DEYO62100042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x257908afaf7569e759910145cb7b427c3f3af5f0927ecb18daf1e3380f08ca19. 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/DEYO62100041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c3918a245850b9c94309a3ecaa410b433d2846162dcbaf80d6b367565840ce. 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/DEYO62100039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6562683cd351a499c0e69c850464df4b11ba42cffa481d6ab8d3e8b852a983c4. 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/DEYO62100034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef644fa48299791c213ba7eb9bc2d1379bc44d4bf7b8d338e029e7873b2e8326. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/DEYO62200228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa9960dcb6f4fa7d2e1edd375c9188a754c2f05fbbf9ce2ab40471e4dda188d4. 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/DEYO62200222.