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 0x90000d63287fd5192bfdf7a4a2ae5a41d9630435cf5ecfd1d5beeb295409fbc6. 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/11c351f6-e347-42fe-96b8-14d3a8aad675.json and https://artists.proofprofile.net/proofs/artist/11c351f6-e347-42fe-96b8-14d3a8aad675.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 0x7bd3b4920ccc1ca212ea3361950bab7c149d7f1622341d3f0a677b918f5f0a7a. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:02:36Z), 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/GBSMU3340002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f24f30fef1d7a666ac46fc4914f143b075afb6dbee840a30f0bd16a5336216. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:42:56Z), 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/GBSMU3942640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x714389c97fbcce4a3e827dfd070ecd4c5708a7a21294ecdb7554f832bff0f1c9. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/GBSMU3490270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c3189b350fdcf191575b084d9eb151e3cea52b3d7d35bef058eaa2b83a9e8a0. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GBSMU3769723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f154990c7bf07f010e065a5783212f75964fdb0dec727252d66f1a23b599086. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/GBSMU3769724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf8a1cb5033ab254bdab45334242cfbcca88e37cbd3a25df432c00617cf190b. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/GBSMU3769726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa68cd7638550ade2b562bba4e49391acb3f1a090633897a0f21e1ecdcb745a02. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/GBSMU3769727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8cc4e0e12a53ffe9ab71c22aa16211b70f1aaa32cc4b279b293ce006fed092. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/GBSMU3769728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1661d0415c3fca7493ce2b50ea9114b8bc64fd2f58eec6e369bcc906e109772d. 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/GBSMU3769729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca21a4eb0a9d5278dd476808347899168f99b21e6584220419a1b3f344bb2dab. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GBSMU3769730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcee03990c4ef854140d4dce17bc64ea171fe9ca0b30b3317035dc7132ec6375. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:45:41Z), 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/GBSMU5479347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522694454b2c64c734a73d70e8b457959bff9775703965ab50bb6be130e9c044. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:10:10Z), 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/GBSMU5479345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708c6d6a9fbbe96ba3bb9794b87b22f5baa0590bfa12128323c6f175bae6fca6. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:43:51Z), 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/GBSMU5479344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522694454b2c64c734a73d70e8b457959bff9775703965ab50bb6be130e9c044. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T08:02:07Z), 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/GBSMU5479345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa117de86e0d5a319aa25e6c94ad9661d67e8fe85a7cd8d8a5f43803b69387c. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/GBSMU5479346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcee03990c4ef854140d4dce17bc64ea171fe9ca0b30b3317035dc7132ec6375. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/GBSMU5479347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32daf3ee974739bbe07e693d000debd71b2e5c37aac779455b76e2e092cdfd77. 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/GBSMU6648460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8f1572648946747bdaa2426bac863143c935c2b85b743ae2e0a89314619d5f. 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/GBWUL2088204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe919d869d0bbacfd29831f3ab7875dfae1ad6e1f34f6a923ddf10e082bf38432. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/GBRKQ2008816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe919d869d0bbacfd29831f3ab7875dfae1ad6e1f34f6a923ddf10e082bf38432. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:57:21Z), 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/GBRKQ2008816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5f3b8f29bb6f541149216b417a8beda0365dbae53bf65fb17bee78f435ee2b. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZ5FN2170631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc162b077de921fa219142f7bcadc98b5f7ceb896322f8cf0f4bce06605f59d0b. 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/QZ5FN2170640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5f3b8f29bb6f541149216b417a8beda0365dbae53bf65fb17bee78f435ee2b. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZ5FN2170631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa1aad732e2fe47dbca8dc363e51f7ac54c116fa70a4fec7b0c88d004d43746. 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/QZ5FN2170638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc162b077de921fa219142f7bcadc98b5f7ceb896322f8cf0f4bce06605f59d0b. 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/QZ5FN2170640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48532abbabf45510d6d603c0cb9372b90e09113de84cd187a12db23f0618ed02. 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/QZ5FN2170647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x996b233e0c80f8758f0a33f3374541d0085e2dc2d74b302f0fde24febbcc0d22. 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/USLZJ2179835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75eb801ea0b1ba576b3fbe915b128c9629912340b551a7d2e068c45fb52c96b4. 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/GBRKQ2175376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364fd9b2279583597328f56383171bebfe7ae7e9e31cd43abf2e9858ba29245d. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZTV32305600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364fd9b2279583597328f56383171bebfe7ae7e9e31cd43abf2e9858ba29245d. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZTV32305600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x419de6d30c4acf76e99454d729c07a58b93d825f3b03b308c60baea212f8cf6b. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:21:42Z), 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/QZNJV2472836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82d00a692f8fa5bb93f318255ff7fd6f50a6b8b51bf6241d8ab96cd8501536e. 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/QZNJV2472828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82d00a692f8fa5bb93f318255ff7fd6f50a6b8b51bf6241d8ab96cd8501536e. 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/QZNJV2472828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6d36912b210a589cbb4cd6362cae1c83ea797a1f570218f3e2e4845dc21dcfb. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T22:08:05Z), 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/QZL382542264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe869660cd6f0eca4c20bd9a1a28e20d617bd4520513765781dd4cac924b45461. 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/QZS7J2407756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a05f0a702c62ebd1a001280fc84147c82c4c5fa0b2dcb20f48523a05439583. 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/QZDQH2516925.