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 0x2bd65e229e381b8f463c1b0f60a8129f120eb91ed4c4228d72113dbbed91e116. 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/9e187f0a-0a05-48b5-9d16-2a77e55295af.json and https://artists.proofprofile.net/proofs/artist/9e187f0a-0a05-48b5-9d16-2a77e55295af.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 0x1bbe4ef0bfac2aeab9c32ebe1cf13310d704daf32d1d5556fe25fdc9ad264a5d. 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/TCAFK2172895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e71052740038e62509bff3891393f900e7b2a8dd5f70740d67fda5efe6c7adf. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAFU2166343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f9780ed3ae320e6397bde517b51f8e4ecd6e30543cde16e371e00178fb7a8f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCAFU2169524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee493ff37fff2ccd1a38adafd3928c775a4e0dca91e17c104fcd9968f6ebc6b. 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/TCAFU2169527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb874fe96cbfd25a476be377da459494326924497ab9a3175ab7a7466bf140d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCAFU2169529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e8f662de7bb67a181f2b469848e94897b97284f316348308d7f6f02288e074a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCAFU2169533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb9c2cfdc40d5993ea9464d0efc522c19e712407f20dfbef8461f955899b110. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCAFU2169535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2fe1ff1ce9f7940241589e359c08bc9ed9780ee6196c898eeff2408b1043266. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-17T00:19:37Z), 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/TCAFU2169543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae901db7cc948b62573a2ea4055e21c24d6a75d6a17b197a2065cfd7ae8126bf. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCAFU2169573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f80d227e1c3020f4a64d8d6534dde1c80d2df37cc70f1a3b64c450a14cd909. 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/TCAFU2169575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39419dceff406d94a306383efa0759d64b8b76f0d8d8cd501bcc72009aab6579. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCAFT2149219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6365ad835f015234a4b2951a38aa5ee08310abe4ee2cf2f8789f51aa9b7b694b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCAFU2171481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993922ce894315176cc9cfdf924a7fe5c285d91817f9102b9adc0bb0de48fb49. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T15:41:47Z), 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/TCAFU2166336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b0dbd41abb69faa27822915413df300258d1183976ba6c9afd176c308f269f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DGA062408873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f58c906b62370fda74d4faf9c87a0e9d074924b39f4155e6e7fc75e5c625060. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DGA052409147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d6bc43a35cacfce8e537734de16219cc120d67ca3c974cd80e62635f96d274. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRX282433167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a5e8b4b37fa109bc098bf9f2899d9f346fe8edb91402324cdce0f55fdae8f2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAHE2332362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a579fac36a3b0cad4e4729e3c3e5ee9678007729e802462e52c60366527f29. 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/GX3Q92365952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84aa1c2b48b354bfda933b57beb704abb9aaf2308879ec6710eaf56c03cc2426. 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/TCAGN2277104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb57a38dad83f2a00ef95ad1492100bd8f043c1072be2f6e06f1b50faaabe24. 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/TCAHR2317865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47cb3d3a3a55bb4b894e95877bba7226d9c9643940eb11c7c03840aa0a036574. 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/TCAGG2226796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb33741c6bb45a2d82ec6eb1a72ab8f4173adda28e508d27414bccd126b3a9593. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QM4TX2283217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x313c0ae5e8826bc959597bee0c142fa63985d09fa54c22ebcbb6c3ccf072d1ae. 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/TCAGE2204388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39419dceff406d94a306383efa0759d64b8b76f0d8d8cd501bcc72009aab6579. 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/TCAFT2149219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56269897596d0dbbdbb8fb3c7987a8d6f3bd53d87b13977735e2feeede4f2c1a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHN92108585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b2ad152c8f6da646862600427b18b34bcf67bf8d840cf1908cc066217ccca2f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZHN92108586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d449ce5c3929d3b60b1ae7d990e33fcf00be243bdbebf2fea0a2f47348f239. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAFN2125955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b8ebd467d65273e0c9a39eab28e8d6a712358d7469eeb0e1ff69d68bfaddde. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QMBZ92094094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c0aeb67a34686d7762f0a533315f736b5487198fa635d93dd4f2fbf98e901be. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBARL2001081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75aab98c079a47bd35fc5e32ce81629fdfe4ed6b9741327c95829496c6be48f4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM7282058299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a3d501b93b3ee1fb32a8128e6ce818831eeee044d66954bf197d23788f0670. 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/QM6N22072808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x705b0400bfa8197ae56d226738cc5cf5e830ede305e64da70ae186be403b5ac5. 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/QM6MZ2050900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b3de8d1de922edfe7b78d9c3b9089ae063480faf1c6ed3804e2258b6595c58. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM6MZ2050185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd10ff5f71065eed072e99e63d08ff5a889e6dd41d98a7ef5fcfc7deb963a889. 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/QMBZ91908248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe192aff9ffc9fa6fb91b5b416add2b39cca9dbc1b70502d635a46942c6a5f7. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/QMBZ91910442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd10ff5f71065eed072e99e63d08ff5a889e6dd41d98a7ef5fcfc7deb963a889. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QMBZ91908248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1988673cd6ef7d956e17f32cdbb71f3a10b5ecb7cb48ece2cfd9adcd2f717647. 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/USA2P1938919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6d3b516da4c6400f4c268b6d72d4fbc31d6aa9b0f365e563b15a2fa7578808. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QM6N21821313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81bd0bd258f2b34c6d970442cb988189f6d0325141a449feb50dbd7f4885d31a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZNJV2246372.