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 0xe75486704640570495b1226f113811a88ac063b18df635830cc8c8146c0ae986. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/11680dd5-9fb1-4c3b-9d98-8eba45453ba6.json and https://artists.proofprofile.net/proofs/artist/11680dd5-9fb1-4c3b-9d98-8eba45453ba6.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 0x1994c7d0b812926b3edd6296cf4cf7f9be1655d75394f1c9c193c04094b2afdb. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GX53U2333729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47bedab61158351771484096048da439262d9123e16258b680dc65fd470adeb3. 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/GX53U2333731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9786ed059fbbef2e88ec67c383055b782de21eb1cbc441923017c5d936a7a3. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GX3Q92432538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c2c7201a7769e0a3ca5a62b9f0d15a7f5b85ef2231bfc2b5f7b65e79312c8b. 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/GX53U2333734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9786ed059fbbef2e88ec67c383055b782de21eb1cbc441923017c5d936a7a3. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GX3Q92432538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe195177d1f71dd1c2861181adc9332e8160ad6b9f0889beb33cd1020861d840e. 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/QZTB42370697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1603ccdc52aa62321d0fb70147bef92618a4d98ce233da89f43957c8f298e18d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZTAU2368500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4807abc25ca3242dce97e651c97ff86fc5d2f512cb8a2f5c671d001620b0033b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZHN32307277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61047f82a60a1d041b41f804ce6856e152533cceedcaf863d7ab48d73913f21e. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/GX3Q92323095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ac4a61bcdf2fd107a0e7d0ed03c79ca291b9ac9aff49ea24df4beb1d3c4d14. 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/UKXN22251151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x017112fbda7fb29080d1f9716f7ad93ecbe2bcdbac2f74610698eac7f41725cf. 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/GBLFP2260085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5238b6622b6d7940deb13b5e533561751d41178aaf04ef9cb0ed731a766c3d3b. 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/GX53U2088474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9bab25a2ed67ae35d0dd4a493f0c1792b9889074899d1baf1e8bf6b64ef6a81. 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/GX53U2088475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefca4c955534b546bd40e96867acafcc491573ebd9963f985e50ff33807625b7. 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/GX3Q92174181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x791dbb90de4953e79899f55c0bea64a453b32998d4b0e541cf254e0e265bdb62. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GX53U2088476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e99734e3f8675df1d8220bc2eeecd7677ab1027297c9c84979539011f8a18b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GX53U2035602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefca4c955534b546bd40e96867acafcc491573ebd9963f985e50ff33807625b7. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GX3Q92174181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ef0cdb23f9f3a9a78b49d06a96ad48696e04ddec7a77c83e948c9534e598f6. 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/GX3Q92108227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x238e6ffdacb372aec77d585e783becf1f9a9db6b43987b3c85e427c83af23ccc. 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/UKXN22183253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878e37cc5666218b3b41d535bed697bb507ad0aed9e7557062bf8328dd28c5e6. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZTAU2445136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceae6e8ac8b78ce09440c8ba69d300356066cf1d72bb8cc95c709258485fc9ce. 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/QZK6G2376431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5fee41a9dd853934bcb6d7e56f159e8750593c5901d40c4524487261fb1b7b6. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZWFE2351240.