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 0xe64fee064542589090a6dc86527719c2fca4fdc6c316663f9a2c473beab00b3b. 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/e33a0049-cc9b-4a92-bc15-9b83cd5f9f4a.json and https://artists.proofprofile.net/proofs/artist/e33a0049-cc9b-4a92-bc15-9b83cd5f9f4a.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 0xb38f41979d572d94fb3113ea2a90e6140e709be8d1b56ce63c869f703d498c91. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:31:03Z), 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/PLB822000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35642eac2a10cc95d6580911f4d789dc72159db999f9d6242017b0b4a145caa8. 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/PLB822000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b30ab2ef12a3718eeae6feb98c4ae8c1907a0c60ab19c230f78d18b4f782a0. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/PLB822000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7698512ed3ebfc57d25618b80e396fceab4a8b5b8cce7d8154dd5dd33882364a. 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/PLB822000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf08a5536582908be50908557bb8c13b49269f21d08f8cf16a6f4e3f8f0817b92. 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/PLB822000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde7170ffcf6c4030945edcd30dc3d4e321ea64cceaf865f7bc136f244cce37d6. 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/PLB822000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf624a1a0217639d3e9e25fc0aa53d680462d88ac3b8a2243c072741ef9d78ae8. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:47:22Z), 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/PLB822000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf53d3341e144e85e8a182717ce72202ed920b5e91c8d02e5a4f6d0a9ed15af. 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/PLB822000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x688f29a6c05e36590185cac52da5885595de02e33efdd27b8b62cd9821ad6027. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/PLB822000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99cc22efa30c941d0eaa0d38ae29c0e6c9d2cd49a831bac3876b3b762fb8b42d. 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/PLB822000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a9a6cc0fc933e44ac1d05088bb929dbcd2a43b343ebc4789ff45c0cabe674e8. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:42:58Z), 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/PLB822000024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ff74d573a246ee935a260ca0ed0357f21e13e0013f6b802708e0da4c9299db. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/PLG491200191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ccc46e95fed8b83fbd517d23bee0e9c5ffdc4928790a76c2f2106363ecac93. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:50:31Z), 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/PLG491200192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d21f83af3fd37bc388c39793b258b9976a5554e8cc46db1a584c4c136a1288. Chain 2 (Bitcoin): anchored in block 957703 (2026-07-12T12:26:40Z), 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/PLG491200194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db2f1de8e9e1a64dda6242c7866ad2621357c327859208fbf723a7f0bdc9ea4. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/PLG491200196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03519b9003fffd7866ef0d821522ab4b6d1939c0e593518d0f2cfe0b6e0311da. 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/PLG491200197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8829f5c0ebee013c1ab173dc2e5506e60e3c2aa86a4507e3b7d020b98705f3af. 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/PLG491200200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb83cb63af2ed029f66f49456e7aaa1aaec32f0d1678f8061d32897692ded7847. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/PLG491200201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f019a761085bc78b796c444669d9f4b199e642f8809d1cbb451f44bcc273c7. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/PLG491200202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e67c171d3e5f38463c8846b337757432a005bf98bf1484def8c8bafbaae4ef. Chain 2 (Bitcoin): anchored in block 958971 (2026-07-21T05:04:56Z), 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/PLE781700213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c0fb4172acdbcb855b641d428dca98386e6c32444b761b1d8e27ed4db5b5db4. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/PLI360895390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fcd070a60fcecc48120c77c11bb7db90dceda89c677d75fd0dbb0862bcfc85d. Chain 2 (Bitcoin): anchored in block 957702 (2026-07-12T12:25:41Z), 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/PLI360895400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ea0490c567f2844625fbe89927075cdb61b9a0b48c62e6ddd4fcfb16c62c93. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/PLI360895410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24de003e87b517184dc0e38707ad7e7ec00a935d0d21772afc277caf4b350d79. 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/PLI360895300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd997f5279b665291760eaaea6412e75e08a9442309f6304df46b4b628f3926f3. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:01:59Z), 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/PLI360895290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f5cbca1190899613237798429f52a0f9655db6ac3475879ff1ad5e1590ba569. 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/PLI360895310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ecca29a44afa33b3ae9d9a04a7f0a43af57bcc7e1c337206d10cde840e74f0. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T01:25:42Z), 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/PLI360895320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b6e73d84996e2e021afd575922c8d0e7021a9ffae999f651e29596a6543f1d. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:20:37Z), 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/PLI360785110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a85d7580fa00c206aea03c1e04cef1b4ba9e895bb627f13e97a4f419f019423. 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/PLI360785130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16007839b601bf36ff5ddfb97aa84c8c3c2f391f10d829a5259b715817720ef1. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T02:11:11Z), 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/PLI360785140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5776dfab5e8f2cabbd054f8114b2e37d8b8c4302701fc5dad052c9f5dc1bb408. 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/PLI360785150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4798ecf3f385d329318625417a43b46046fe81cdc77d9b76959bb1388c8e9e55. 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/PLI360785170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f2d783f1ebe7ddad41b50fde723e7b9d4944633d696f108688df5b5cdc7dd9. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/PLI360785200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda83a401576e9b4228ad4a280f09cc1f9453bc0c3c47065ab9171dd5afbad0e. 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/PLA391370001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca055c118adf9897a3680cb2608a65d249b52188bfb8c7f33840a6ad8c81217. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:33:25Z), 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/PLA391370002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e8622f95afacd6db6447f0bfbdf79ac468f16e73cafa708621bfbcc7f5f1bf9. 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/PLA391370004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa86ead258b38343bead52bf9dae2ab5e3d93b4294308bb70b52f013634b540. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/PLB821500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79bd90f96862679d226e49e8095ecab9aa5a8f5f75dc56f6cf2bdb08c2c1a977. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/PLB821500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e7d28c27670b952767f36321ce8ff73cf89205db64f3f14e84a4ac4d0f1984. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/PLB821800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43c5b8f49ae10c80cb9b323d6fa5612fb71fad8ab97d147c98b4dc72fcd6c08. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/PLB821800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59835b3b99ed9de0ef4967f88b446db2e3099ca521e0519f69758bd39b0ee20. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/PLB821800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c93a02260f8e0c0d2183f5845c23d64f3c450eab4853985c103b215b48c245d. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/PLB821800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4308bd946c78a6c9049254461fd0a0ad850ebd7e9a15a67a379fb63245f31da9. 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/PLB821900173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37c31148b3ea6926bda275e3009622522493ec2334d2d14fba3c5e340e1b1c8b. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/PLB821900174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe165b13538f53277e047dc4cc027a1a505dad250be6b18963047fe50661555e4. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:52:13Z), 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/PLB821900175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5298340c2d25c4f26258374771f4af4bfcbb153b84f6b81b663514b05df7a64f. 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/PLB821900176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55549dc7a2f6c02e9d08d99cb6fcf4d4faef9aa8fa9ff2f6323471c7bd12ac77. 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/PLB821900177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61cced79290d779dcf6cda52476681c96795f231254f4048d170006f3cf749aa. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T17:34:59Z), 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/PLB821900180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5cb104de290f31784b113c20a0bd9161aa5f9b23e365606db6640b8adf43b88. 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/PLB821900183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a5b69fe4d3c3928cd14a86878899f9fe2d0ae71909c9cc96838f632fe64bb9. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/PLB821900185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8206685bb9e0de3be36cb56c9fea3d5546fed2412d3245d22cb30469c65d3d. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/PLB821900188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73554c63f135cabcd9edb1aa481f09875e061bcffee9cf11349f36b8f94bd4b9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/PLA391145914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe733682949d1ced30f833267d80f18b2caa292abc164fd551b2168f00156485f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/PLA391145916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95433b66c49ec43ad8384b1b0c7306258372755dd76668925e5f207eda53bb77. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/PLA391715410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb0e7de9a526d3357177d48483f77fbfd33c03834047a377bece3cdf4e0ec10. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/PLA392030403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb16f1c558dfc22c427fa9ecb1630afed92873166070baec420a317fadcc4deb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PLA391605207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45db9d78db0ceb65f3aac814fcc5d456e6b7237e659e54cc9f6f50029db7e3f1. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/PLA391820411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f4b61be8f762db037a1c4d87280722661391919bcc227126c5bc73cd607d47c. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/PLA391145915.
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 0x05db3dd4a7df0562d344d154f04b48e22e3460d6c786070b5eed18732954c304. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/PLA391146105.