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 0x7860b23202c04f6732a26063fd50135eef4608cf95cb8399d46297c4fb814cd3. 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/bf44ec78-0bef-4a58-acc2-ca2b38dcdf56.json and https://artists.proofprofile.net/proofs/artist/bf44ec78-0bef-4a58-acc2-ca2b38dcdf56.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 0x6ba84566590d301792165a6d87b6e824a8e190ec276008fd48139055b2a0ce96. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:43:37Z), 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/DEUE81501054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a33d745dbbb824c0a90604557b9aac2e1705ec5a94a8f325140a957bc5869d. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:31:03Z), 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/DEUE81501047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b77c7ced9901f2c54a5a790669f39559c5a02268e5408c396706286c24ba07. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T03:01:50Z), 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/DEUE81501048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba84566590d301792165a6d87b6e824a8e190ec276008fd48139055b2a0ce96. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/DEUE81501054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671a0d687701c5f3994a2db9df8d4297ac06b014e472f69fe18c3ebdccf80a56. 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/DEUE81501057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df8e32698404f4d32398b8934be9469909cb443bbdb27b6589b02cb9cd5fb12. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:17:44Z), 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/DEUE81800090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ce93a5b527e4211957c7ece2a9f2bb712958f69f939a811be6f4c68ba99081. 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/DEUE81800080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8957d2bb52540076c62411f0afd8345708bcb2676c1b9245e499dd2cf1bb2054. 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/DEUE81800086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba8a9a00083f155394075e2cfe86edb262d80ae81503f47ab26829279d2546e9. 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/DEUE81800089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x705d13e1eec12a917d4738823dc2e245195f5eac780e077365fc7139a1141fb3. 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/DEQ022007289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f63e3968bc757032adbd1684afec6f2b7c68c78e4f598041fd64ea22171849. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/DEQ022007223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc25f316614609105f32864eefb33bbcb30ce06385017cb324a7472fbb6973600. 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/DEQ021911824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1f684611d3bc94ded15cf19d1619aed46cb8029ef1049c6c355c9e08c60e21. 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/DEQ022007296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe399fcd87f34ca33505eb77716d944fa7048dbf22320a0a97d990d6de1bd29a5. 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/DEQ022280633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc82995b2639aff859e072a17f30efd8fa32fb8161bc55508b216ae35dcb9c0a7. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/DEQ022151957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae2eda2914ced9ebbbf2879f7936aab68772523486c7a1f5d1a48b34baa1b56. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEQ022280189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc562869b7e6286c99f0f07bc77b4df9a408cfe327e6a7c8fa147fdd1e1979f3. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:02:00Z), 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/CH7812229310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38da81b979f0e02917469943d034333daaa563422f879168b76e828a8fbb00e6. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/CH7812234844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123094f1d27783c901c358e1c83af60ff7189f22a7f480ecde46e384d07beec3. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/CH7812342521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb89440cc71797063b8ffe2df3f5ddb4a81da28cb156ec4a89f8e90fb37a56d7. 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/DECE72203606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf04ad2236ef82fb47a3142c9d7e7829872074ee8369d4dd23c7f72a0a221101. 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/FRX762075032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a24127b8cc30e9081041cd6ec53ecef8ad82c31a9340caa63f5232d7ef994f. 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/DEA622000576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f56e5b3f88441268a9169d9437ad4e999eb8cb13c90442da7f2c70f78bfb6bf. 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/DEA622101460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30daa9845da44102201756bdb83d82ebaf2816f0458144d87d9c5f7b36b1ed00. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T17:24:18Z), 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/FR96X2109168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30daa9845da44102201756bdb83d82ebaf2816f0458144d87d9c5f7b36b1ed00. 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/FR96X2109168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc86fac253c0d28a9b8d56c37874c588f017f245d0786a43dc1093a41646e9896. 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/DECE72107707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b5d22a7e61a93358b41ea51409bbec53c1f9a6bb2d4fb98093d6be67d3ae5c. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/DELJ81948239.