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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a72e083089e55bf6cb06f57b157d83e11015c9ec35a67d1d6613164e0dbd906. 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/ec9212fc-a3bc-456c-93d3-e73b7f52cab4.json and https://artists.proofprofile.net/proofs/artist/ec9212fc-a3bc-456c-93d3-e73b7f52cab4.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc883cc6f9c98cc2897ee25e53f35cd5bbeb662d978c518fc04a5e7b3cde9a2ce. 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/TCAIC2499708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde9560ebaba125e4daab7bcf1640f9df6da388cfe3570429fc51f262b91678c9. 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/TCAIC2499711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d0b80bc72ce434d5e22dc1f60495aa9511245061feebe9869d1706eb8f284a. 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/TCAIC2499720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8626d8eda212b9c23bc0f6fcdef663836e47965a9ee101a4e364e0a46cfd1cb0. 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/TCAIC2499721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7c037e9acccd66ecf4449c859e43ef8f9ff60cc56fb4e5c39a28a209140fa3. 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/TCAIC2499723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f4bdebdb5e9f23f1ad9b1740934abced06e9e62241681a43056fa3b456c43f. 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/TCAIC2499726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f57c5f3a3843ac5da8cf7eefc084674fbae4434ae8bbb127e82299711d4a5a. 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/TCAIC2499732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437541a3a32d5efb428ce06d3bc8b58656193a4f4511255c1fe11b81d89bdc2c. 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/TCAIC2499734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0be84d825b040c0ed8b68083090c843af1864cd091d5cd57f4f9972d2424167. 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/TCAGB2298781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a0e6c464ebddb62c8ca7953e3a70d8c919f0ee99f0faa3de4f94666e59a044. 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/TCAIC2499742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0be84d825b040c0ed8b68083090c843af1864cd091d5cd57f4f9972d2424167. 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/TCAGB2298781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad90e81a3cfc9f5dcdfcb7f7f4eaf6cb83acfc19c758be89300f60b8ae76d13. 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/TCADF1721357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd44008b039f49b733a035b22933f629bb746c4d5c89aa096ace0f222d1f586f6. 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/TCACC1455689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf626d66211f87b28944f40d2c74d75ac2ebff341b3b08b7f7d4e767ae144c57b. 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/TCACB1443907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x752ef3ba288bff3dccc714c9a87e17838bb6e7499d74796720d2c1a207f3047c. 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/TCABQ1387809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb37ebd177e20637fc91ca38b7cfbd11022ed856e2a516785a3f7509e62e7ea98. 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/TCABQ1387810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4274a40549b08af17255157fbf689d1bf9313414d93f7600d401d94c3c15240. 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/TCABQ1387811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40cd9f1290e7df3ccfe922684be14ae8e456c1a4e5c1775f155d1eca3d04a05. 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/TCABQ1387812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a81b7f1ebfb92676031fff0e86f3a917eb0498973ba7a32fbb5b0a124ebedf5. 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/TCABQ1387814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1975e68fc08360714f7d3596955458f9741549c8b6fadc58154ecfb20791c3e. 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/TCABQ1387815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485f0fea75c2348b69b0ad3220a5d859924e8049b68b42ee9dcfb613b62aa0aa. 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/TCABQ1390458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd536896193e6d79204108352369257207e7f591f77699c1b278c0500bc8e8751. 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/TCABQ1390459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc20ff1d2f57c04854494654fe6821894c935d278731c930fa45b927ea978b3d1. 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/TCABQ1390460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16be058733859c2aae13e5003585a2adc3d69e81bf45f029b5a1d0308ac0341a. 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/TCABQ1390462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac48e505b1095a652dc8b38099bc6772db2f689da978320dab665df499400cd. 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/TCABQ1390463.
I Love Disko Warp Singles Collection, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb33ee11c356acec8aaa83ca17b557dd1f5d3e4cc9dc94a39acd0f1217082e363. 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/QZHN81964360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5ce46a310f5386901d9b6f76313e13bf880fd521e38063350f952f8f7217090. 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/DES562015501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa660284ffb0c671d33c60493ddad5b410e0684b5c66ac32fd50ba8da8bf95393. 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/DES562015502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa157c9f66e05a909cdb0e7808af2ffcca199d8408bec4656c5dd6e8bfbb234af. 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/DES562015503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6803b89edbcae77664a8aba600bf0e126ec7f75d0f414b5cf83b8b9bf7f2e7e3. 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/DES562015505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fc343383cefa3a0577a94107e13c41b5eefbf1cdd6812fb26c711ea85d47de3. 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/DES562015506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5721ef94127f96ffe6c05074b1dba2d14a17fa220e4a83ac4fccdce22369f1b. 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/DES562015507.
Under the Sun - Every Day Comes and Goes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf02c79d6b2e554d5b9aed76aadf83cf4686b35a8afc486d533375505f92e3fa3. 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/DES562015510.