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 0xe70cbe79f6feec0eb0690603bf98f92a65c921849509d49f10d84ebe484cd8f9. 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/26e35a4e-371d-4992-af10-98106b56d092.json and https://artists.proofprofile.net/proofs/artist/26e35a4e-371d-4992-af10-98106b56d092.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 0x8a6133342ab84300c2ababc0467dc54d1b9a561018ef6985d21cff06332f81a1. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:05:23Z), 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/USX9P1366487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf768b0f5a640b1ad3080e954b5eb2c5fe241f73f29a56209f61715a079982fd. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:43:34Z), 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/USX9P1366490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5fb5e413700accf549c129e8c83a9dbf3816b53ede7d9329fe717f18b21178. 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/USX9P1366491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7967fce6d8034b0309b958eb9152aa3f58e586e443028d506b62d21ac2f3ad3. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/USX9P1366492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa49d1835a69b33519f00768a0951347e5b599af40570be417428714d7d63ad71. 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/USCGH1448010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c18e845b2647c4856caec8f86ec2bf4f730a437f01881739b9287a7d5e4b19d. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USCGH1448013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa07f13960de341cafb169bf3b234db5ea72d5b70935f00d43e951e2d6d968f91. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/USCGH1448015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce753c84d7f11090a17b01d9b61253caa2ed63072af61a74c819a0cb3abcb7cd. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/USCGH1448016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa007ff78e4a66577d329ff8b2dbdb0fe60e4394d6c6451b84d17a38f2c9cf3dd. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/USCGH1448017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd8d7c2454f970b8e68fec6131a7036d2940c439ef4b8fc35d780c284e1c4424. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USCGH1448018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ee5a2bd6aaf1f36fa464e3607abd3e1c4e07e87b20dc3af8e2d6c40252afc2. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:51:40Z), 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/USCGH1448019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615f191d470b56e385ae2c4745f017385896a2c151258afe842e486ed5d9cd1f. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USCGH1448021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x901bb045d4308bd136b4d9a2e4950f3f7b1ceb9349c13b49c15402110bdcdc14. 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/USCGH1448995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb7fea60106e70f4f8e1a4d4dc2ef2c8ff465022db5ff833e7b574c183c86a9. 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/USCGH1448997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7424391c3bcb256fef9ec5045c8801f8fda3921fa43063840d5b7158eeffc9. 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/USCGH1448999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd4e1ad8f6232d2a534c4d5950fba2485604addc2c0a20298f3b83b0c57b937. 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/USCGH1449000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa479211f657c631ccccee02a67be92216c6cd435220666fc65460dffaa956ca2. 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/USCGH1449002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4e5dbd4bb6a19fd823354fb37ea1ddbf44130b61951f64a38f7106a8bd1190. 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/USCGH1449004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f5e23535bc908e1781447618c5e35dcae3ab1cc68a40a773b20ff09a3bfb50c. 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/USCGH1449005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eddebbf7417db392a208fc72cd818b7d7865ee4ad7dbbce4dec1fabf17ee15c. 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/USCGH1449007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f67ac36a8aaf3c1b0239a2b752e27352e6bd49f9064db5a0c7179afcfa45c1. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USHM21686494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc537184a2879b3c6e77ffd5cb4da93e5852654173dc32965d61d1b9ddb0c04e. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:43:18Z), 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/USHM21686495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96989f61ae4957e62582e36a510c297c29719654b7880c619c07daddd76db669. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:58:32Z), 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/USHM21686496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd75ec088f16981de8f5890995fe1cc5d0f2236f54f3ef24c5f7172ba9b28a75. 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/USHM21686498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0415896f972e762789325bf9279a65791a9a890e21f3477256b1a50f2881a6c. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/USHM21686499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb0fc357c72e1e1a4ace942e9803b77c101fd9b8ab06ba2a4957583ba3afbd0. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/USHM21686500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ec22684499cdc8ac9be8bee526387b6dcbf2782ab0bef07739f5d5c7f07fe0. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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/USHM21686501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf949a644abe85298c0c82afb6d7353a5f574c32023eb3d5a4820efd2bbfd26. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/USHM21686502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1194014ceba2282cb89eac372105ee21fd2475e588fcd801fe6fa0ec4c3732d4. 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/USHM21686503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c2547cbad6c0c03c9f3a7b42829ac8b10c94845c23dcad448405b20a27abc1e. 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/USHM21686504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80dd342392e4f47c15ea979921e53d61e97004ef707bc3e9b8957133c3580376. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USHM21686505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c3c53411b6d00c63cbb48554f4c7ff5b4d77d48adf2180ecb405239884dfa6. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QMBZ92434850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1d601d940efef78909545669ed529f29cd699ebb0fc469ed8f6a1e9cfc30444. 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/USHM82474634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7468733364234f04288a338a8e2519901bc7dee83b5358be1151343639756231. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/USHM82474635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x475fb5434cc07b5977c9f4a1b59595cd4b661a661cc9157b783fdc16975e942c. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USHM82474636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00571cf4c99920278c33bdf6e90328f7757a9b5f3dbbe93ff8eea679e0340fb0. 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/USHM82474637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1a4c3a10e6685aaa70e4698b7ad93f77f78db701d7c2de4b927f0d0ad5771a. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/USHM82474639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc1e2a14628a67e214ac0e4b654d3d7234cf351d6f3c4ce42791a47c0d7da71. 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/USHM82474640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78697c85f0ac9203879ab62659d00689647f06233de68741e2591495cb1afd26. 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/USHM82474641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409d02618d9c2293f1cf7b34d77b5f6ef0113a3a76a0f089c7f396296bcd23b9. 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/USHM82474643.