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 0xbef6f0c48e7a1db00ba8c7e9400e7c4bd6ad6de61ae4bbb28706ce0067e0be73. 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/78ec8430-5771-4837-901a-2b1686aa8ec0.json and https://artists.proofprofile.net/proofs/artist/78ec8430-5771-4837-901a-2b1686aa8ec0.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 0x8760f3e159dc22afd546719f3b39e1715eb6449dd180d81cfe1345c2772effb1. 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/DEC711805790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe93c3f95730c1e8eb63f9edea8bea413a3b6f95ddca1402b11501e157b4049. 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/DEC711805823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38339954efe0676914ffe45161379c674c8cd0016664c3d4ff0ea5625f4b6bc8. 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/DEC711805825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd61b027c0bf94e59bdf88bc779b01a765b6c22ec4485e18aa31d46078912f59. 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/DEC711805827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5478d82b31ccbc8f4f4bb7763fff65453582f693bf9b1fc64d1e432323deb04. 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/DEC711805830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb9b453cf8c147f42b2ed87e6a2265a348cf15236d9d56c47a4245fdad7ccf5c. 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/DEC711805831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ec11bbbe759a3c2cc28a39383397b3f339bac775f7bfb191b46c1627edb481. 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/DEC711805785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb74d160c1e74d2d37b5fc3e921f8525739ab6878a3d1b268340337a07ab94e68. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/DEC711805786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb53b0171b78a8a2fa0c0d5ab180d743f72ca171d66da24df8f9a31171b9f25d. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/DEC711805787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa8594188bd850f872069727d4b0ca0813cdc5fb5b22d670b266e9b5c7485a3a. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/DEC711805788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9026ec3a39911f9e7839b001db9b814a35da0e6e63e928a40bc976ab30d3e8cf. 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/DEC711805789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8760f3e159dc22afd546719f3b39e1715eb6449dd180d81cfe1345c2772effb1. 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/DEC711805790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5aaa5901e2e3627af88a2a9b05dcd60815a981c004db9e1acc19a9f2504807c. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/DEC711805791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1538c8781fe9ac9eebee0cb004da55c4bd19899abead7597144269edb528dc5. 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/DEC711805792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec487ef85de23de0ed8c8ee2ef2cd34df3d8d2ec74455739ddb413b770b6e0fe. 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/DEC711805793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafdebba0999f2f6b620296176ac6050b30e19bebdb13d53927a43dfe46695b4d. 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/DEC711805794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ae1a7aa3883ea4978a6b7cf279369444c5467c761b95a1c8ea34d776957fc4. 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/DEC711805795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe74444a02490ef5781aa8419972e965f72d6fdbffa490093e1ac213866756318. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/DEC711805796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e2ec74226b01c0418bb926c0f15e51ab29a61274a5a3763aa00ed1df756f4db. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/DEC711805797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc3095160f9df4e9f3c0d920babc8dc288a676768a4bfc2795d5642f00edda21. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:29:32Z), 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/DEC711805798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37eeb36bcca43ab4cd16a8b7999a46ffad7f03442bd7f465860f4314f831f6ad. 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/DEC711805799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307eebfc8748381034aad3aeb30c1abf4039557d36699d206926750d1b570547. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/DEC711805800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x333ac5f2b6b4f50a043fc9b7681062405bfbcf87f5a52e835e531354e240f4de. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:43:23Z), 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/DEC711805801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf26670efdb739c21e9807a9e58e81071198cbd43eff613f14def6475ce6af90. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/DEC711805802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56237bab0d8312acba6ade53c75cd42b278a0100bbf7d34f912c4cf2771a2ebf. 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/DEC711805803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6857dc9a125d950cd3e4775d474051e31107291ee336731207d6edbb380e76dc. 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/DEC711805804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af8f240c385e3e9fc1794b08c5188a69d380cfd4a4df6f3243af580b7e153a2. 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/DEC711805805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea87e2dd004ed0e54230d68999300e37bc20f7397c80bbdb7f4e4b61f7151c6f. 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/DEC711805806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45522d04db3da5f6e3b3811b65453c3f73f2ca7555126b429bf0f89b3c519f35. 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/DEC711805807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa12ea8013a06b6acaf2376ce965ffc2546be887deecd3e111e8dee839c9a4ba8. 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/DEC711805808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8024cc91e62e3b13b41c3587e69fb542e3d2ea375249e3bc5d131d50d1582c3c. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:09:38Z), 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/DEC711805810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb761063b5534a4726fd6d824f95c700053762cb7c0732ca97e50164046a8b749. 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/DEC711805811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b2589c13d58b57d9781001d87b4c244645454b8f3ccf944d0219a7dadb81a15. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEC711805813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e30947c03bafabaecae7501e5fb4d194be042f088c7117b979df80dd07366f. 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/DEC711805819.