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 0x536692cfcadab634543b2221dfaa4e3e831c1c44dc98ac9d0af57caf3207fb2d. 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/4597ce35-1d24-4b6c-a6e9-cbbff2b6a006.json and https://artists.proofprofile.net/proofs/artist/4597ce35-1d24-4b6c-a6e9-cbbff2b6a006.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 0x38bef245b61451c7771974aae861142705b3fd3e2b0eb48384f9e78c39cb62b5. 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/DEZC62163008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a7d5f9d4fa9df6a953fe9f00d4cdfa972eb5b8d5afb3054ecd93761edae020. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:58:55Z), 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/FRX452187982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232e0f7abdb6ca9b0629e3ce94a33fe03f042962a80f885313a093cba1707e69. 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/FRX762174062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27f47f1a5846d729f26b65c67f6c2ef732a786b146fa9eefe8de22926736859. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/FRX872153151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd5a7ccd8921cbf9ec5f27287c7646c42cd559eb432363f7080161f8cbe03e6. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:11:18Z), 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/FR10S2201963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded8ea54eaf5e7d8c5b7c554d5d7545a506d1952a49c84b65a17d58d42dcc6dc. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/FR2X42291877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd06ca11ef3eae7b26524ca7abce6d4aff59b2cda1a563b71d1e17234f28aaa44. 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/FR59R2297865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e6f8be5b6f8c136426c8528945ed147dfccb6c58ed9989b111770cdab08f74. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/FR96X2285756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e6f8be5b6f8c136426c8528945ed147dfccb6c58ed9989b111770cdab08f74. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/FR96X2285756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1192a32daf435b80b9ca09277ef3e88feac14a855055ec1f819bda414020e36. 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/FR10S2229388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded8ea54eaf5e7d8c5b7c554d5d7545a506d1952a49c84b65a17d58d42dcc6dc. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:11:09Z), 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/FR2X42291877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3651d72e42f0062137e6578ad28f52833674d9c35c1e1a0e98985c6eda3d9a. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FRX202289249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e06b8d3aa2eb2fbbb561b56574a90125265256787ad05dd791977bb1e1774cf. 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/FRX202289250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd06ca11ef3eae7b26524ca7abce6d4aff59b2cda1a563b71d1e17234f28aaa44. 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/FR59R2297865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27f47f1a5846d729f26b65c67f6c2ef732a786b146fa9eefe8de22926736859. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/FRX872153151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb0a47638e2c7b2d1f10740523f73c6eae721d4b4b21a724dcc3344e1161ecd3. 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/FRX282290772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31878e4b99b348da2cace331d10170171f957a57f172aae70407d38af3f710c7. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DGA062273934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae6afd5b41c678126c6160a7fd3de1b1cf504f6f13dab6f0a11ca13488da69e. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:01:47Z), 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/DGA072245300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e13c7154763691345b736b36faca3274390856c2893f236f21da8a0b06e0a82. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/FR10S2302722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32060a7f81358d80160e568fceafdd9865f46eed5044ce51f3cb4527e394310a. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/FRX202330342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75d7423524e8b634c2424fb83a6c096af42198db89fb367cb714ca1d915a125. 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/DEZC62379858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5248873a3df253e7c4bc5a924c7ef7ad3ad0638ccfda1323acbf439519965517. 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/DEQ022116399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeefe6ce8dedca80529bbec9acd08be26e2e207fef7f6cbde646daf4e0211fadb. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/CH7812417559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce71603d16f720822b63556c2e68e5eaa5b43503cd697add47fd70f909efd96d. 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/CH7812412836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeefe6ce8dedca80529bbec9acd08be26e2e207fef7f6cbde646daf4e0211fadb. 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/CH7812417559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce71603d16f720822b63556c2e68e5eaa5b43503cd697add47fd70f909efd96d. 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/CH7812412836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547699f126a3bf58427a0f40903b31ee0141141f262eb5e58284fb28b91b3869. 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/CH7812406181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe9ec8e4ff679f5adc45b176d51773f54ee96928d6bd840073aabf192958400. 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/CH7812402616.