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 0x5545fde049297dc7da5132b9b3f02e7a7c1375ed8d761fec23a7d240d720a092. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/939466b0-7db0-49b2-9cfd-43d22eed1e91.json and https://artists.proofprofile.net/proofs/artist/939466b0-7db0-49b2-9cfd-43d22eed1e91.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 0x94e0a8dd9594a83a7089984b82d37ec80d9d2aac074e61be11f9396c38cd5747. 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/NLZ542202316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb93d342006b9a5f7f7d93bc6f455f809ea24329a33ab0387d0bbdeed1ae40afc. 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/GBKQU2263871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eff908c6c5e065a07607afab9f43c253fa4821c08f6b02fbc39dfaac90b98fe. 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/GBKQU2237486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eff908c6c5e065a07607afab9f43c253fa4821c08f6b02fbc39dfaac90b98fe. 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/GBKQU2237486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x303303e19001b9482efdadf8422e97d3a43d4056a39e116c6fe4750cd6c00e13. 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/NLM5S2302108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf67e48a57e3b345eb26185f5d2d6d12c63cd21d93043585762896290a2d6ed. 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/NLM5S2302081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea19d5e47800265959f56b1d1bb0d5455c947a5052802daffa7e0f427b32b88d. 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/GBKQU2380760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ce8ae50f10cd4135bbc0f8a934a6b414156424fc6ef265d9957f389e6bad1e. 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/NLM5S2302028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7819162b069e20d3099397408967c2f4c78ac8de107424171ccdba3a85f188aa. 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/USA2P2339708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44461295502555069c8fd7ff2916072c10b85eb9c8f09f72796fc8f56e2d658a. 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/NLM5S2301999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c3fd0f992390e8b411695598e113b690f01403e592af56b85e086be7dca1d2. 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/GBKQU2319213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa85764559b79bb0b594b44bee6344c8e87b8c82e8651d8ae1e1840a5abf25890. 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/GBKQU2319214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fc68b0463c9e6515d9181b9f27c37bc6cd3aa3b405c8cfb0590c2ef9802da06. 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/NLM5S2301887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e9c2fc7982f3f7be47d8c9574cb0a81c478cf8502d449a75533416dfe994f0f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLM5S2201811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e6865aab0097323abe339c15d4581ab73bca17c32ab0ac0d723bc9bf06246c. 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/NLM5S2201812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x682ef048e3f6274b4b52e5a891f2637f66d94f8b7ae7b4abed0c03fff1e979fc. 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/CA5KR2278877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1875749b2135353fee1655b7ad783c6a372ef1514be80c1efca4d35653d8494b. 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/CA5KR2278879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83adb2cde930c49c3bf0edd4d00fff63c9d6631bf14195fa6891785679cd424c. 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/CA5KR2266944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5fc4fb48928aa11375791884af57a3d588a5f11f6340851a8aff917a7ab9b7. 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/CA5KR2252792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee6f31d30376f00b881ac76a1aa4cb16d3bca55931473efd2618e310032705d. 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/GBKQU2248849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0758df0b674e8d0221dbdd70f636ebbad92114f764ec76f9b8eb58094c0cbe10. 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/GBKQU2219284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff4dcd6fd9a310a7804ce6d9c17d5153b5b6aef939f6432ce710b0aae46f78f. 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/CA5KR2212631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3137e524cb0483798533240ad3d41df89c76637058862bd3ef14e369027e11f0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CA5KR2212632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343b283f48a4d39ac210e6ffe9ad11743138e2fba373888d7df5675965508317. 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/NL1ZN2001376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e37e24953c5b73a6a08291a82b9d2048007d96d877051d776490d45a4636e4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZS632125977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54eaab6f7d17195fef02af8841d9ebc3b018456358db58d8b3a21b8c09ec2075. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZS652142907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fc1f0075fdb4e7c6d7f61abfabb73c0d4b529286a161f441bdc1e849597d592. 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/NL1ZN2001310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb7c52093a3e53ac175b0be4f2085f3de777c75de4242fa886544c33beea790b. 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/GBKQU2116724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc364972515841dd5abc9125dc9af1f99d2bc9ad060a44fcf3226e591dccda656. 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/GBKPL2144962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d4aee4a1af61e4666e6b379a5248f18f56da1ddd96016b743fadac22d1cdeb9. 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/GBLV62037355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71b6b252d474bc7c95d2e7e885f72e58542170ba293a0ee1c7ece18703dd7ed. 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/ESA011782958.
Won't Let You Go (Remix Contest Winners)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240c7a8a686c46d19b14845b880d786622eb224b1371ab0ca58ba56425e44450. 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/NLM5S2201650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d150496fa5189dc0c8ff8ce47d6aa7e164044e2d1d2ea6a7e7d27e06f975f2a. 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/NLM5S2201705.