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 0x22839d1a6e2a0e9d4f6509e88183475d112ee704cb16775a20c2ebb612253d28. 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/ceeaffb7-89a0-4495-8cab-427108d67165.json and https://artists.proofprofile.net/proofs/artist/ceeaffb7-89a0-4495-8cab-427108d67165.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 0xc85d14bb6d8cb91b5a7c5d73297f3eb917f68b6ee6b024b85e303f6b4e8f1676. 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/QZFYX2047813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa1ff595cf9d5e5b84ff6d4f2344656b1584e745b57256448d48df26da94baa8. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:37:31Z), 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/QZFYX2025577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x483d135338322dd21e8a5a282980e5ebec0860ebc7fd0cf54036a840030d94f8. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:29:26Z), 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/QZFYW2019880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea66010d7f965af2a2d393652bd6e58e8976d6543f8084dc2f50425a3fd1a1e3. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:03:38Z), 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/QZFYW2019886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11817e27a9931bbb99eda24d465d3aaa27d32343820b7a582ab597c6ce5041e5. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/QZFYW2019892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb353ebc916cf46fac8bcee81864320ad25d7505cd10c020610658c397915a3c1. 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/QZFYW2019896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f72d53c4e1726d6c8a070d27f9610e1a9dd7e857227043b67b44a08ea5427a. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:51:56Z), 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/QZFYW2019897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f67b81c6ea01b7699acc4813ea763dbc7d639ee37a2f5c262bbd127d33196ca. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:30:51Z), 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/QZFYW2024473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b2242804007fbb15e3172c39b795ce1bbc66b8c5e78355f3c5b403f561e52c1. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:59:17Z), 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/QZFYW2024475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1dbb5a7e79a3ba1f1a5cf92397c251616c6951130f4460cc1449e87b1a7069f. Chain 2 (Bitcoin): anchored in block 958647 (2026-07-19T02:36:14Z), 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/QZFYX2026076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff03df55f3108c3fbfaa50428f0a5446e19f0c1d048d52212955d21bd87572e5. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZFYY2021655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968d801d6c2b2a8e7613e3e3cc874099b71df241509d00bf542cf935cfb0b04d. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:00:06Z), 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/QZFYY2020938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c1dad7481b85941aadc62265a82d5fde6e502010f3d4f205fde71efbe91930. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZFYY2021670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc048e4070297c42e41b737474dc1b6eec9c6e48810098e5b5fba3efa5407ad02. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZFYY2021671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb350840821a0fec5274d4498602f12a35005c5ad6ca09e9e062dfbe69a7bc6e7. 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/QZFYY2021672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0888b7dec508c40de9860862f9a133421743f5a8d924af05e5dca31373d5683c. 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/QZFYY2021673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb798337956b267ef7f03694da0928e02c659b43de47394ae99300fb38d596555. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:14:55Z), 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/QMEZE1752891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53435d6a1d2bf44d2bad9b1e761bd119e3b2e9ad8b896afff79d41280c971a05. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:10:58Z), 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/QZFYY2022438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ea83fb08b2077c433251f013b2a161bcbefbaad3a2ae87a30478d00e4688fa0. 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/QZFYY2022440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d1eded7fab39b132302028b6ab457919b84526f1c5558fa16f9af3c55aa344. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZFYY2023426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c292f18ae6512c65cc82eebc4ffc2f9565b2336b2c97c304e124c6b01f2717. 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/QZHN91951850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea79d5d1b7330b343f53e6e67e6cd3ec0b352a3fe73bc4b5e134b8c94cab69bf. 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/QZHN91951854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe922a8b45f24668c4fdb357b08290a0fb8d604ad414d1d64c68c8568c6e9acb5. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T22:43:22Z), 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/USCGH2134455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb083415a0d6c2beacef6f0bd0357cfb503cbe28342f36adbc0def6fbf8d15cff. 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/USCGH2134457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd173ced85e1dc1289c9f694a67082b8b9e72808be4da3bb15cac33de4c0dfa4. 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/USCGH2134458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cacb66673309b1b26d4e72281e0bdfbe41fd9ed81f142aba3bd997267ebd375. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:49:27Z), 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/USCGH2134460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164c7c055dc98d120fd30975c0708eba049731eacef2b0d871b16b32845eb001. 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/QZDA52259315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb48f1eea31767bcca8842ff40ad8c48a99f38bbacf973c5146aab7a01b90308. 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/QZDA52259317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00adab1e7548accc8180f18c3b3d259b998a5f5ca55d78e1d25d7c3711262194. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZTB42306178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe760b569fc9885587cdf483b5094b97f9019c1e043353115a39ef7bd73549737. Chain 2 (Bitcoin): anchored in block 958635 (2026-07-19T00:58:42Z), 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/QZVEM2367680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe93f38969170dc74d02bdde52435e16b47547c057ec0d5efc338e7d2c70b9e35. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:52:20Z), 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/TLVEM2477381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161174dcb4bb49f8dedc98d640809a9fa670f06de57238287892bd5dc4505df9. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/GBLPF6804686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0de318c8117c7be4d6795e36073a5833abe710aba93c73f764ba9070d568cb. 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/QT2VB2497743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd321c53420b7c95ba23f94058e31cfd192a217392d6e0e8ac19cf08f8e0726bb. 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/QT2VB2497747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26fedba3fb6a70fc7a57876d29c4e05c5a99fb37b7c8b9dc0c24f75adb20a2d7. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:03:48Z), 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/QT2VB2497751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97f4818e27fdada33bc5923a6e85241cc089618d6e4f231abbd2dd503586e3bc. 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/QZVEM1842402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d37c1b310a61a7e5373b3a4821818b59f75081ee1cd497d50be47b8f2bbb17. 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/USHM81795754.