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 0x9a0900835931134e96a10e9a5e96c35ca5e5e5749783025eeb3845f6008ae4ad. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5d7805cb-654d-46a7-8f12-b5ab6e85278d.json and https://artists.proofprofile.net/proofs/artist/5d7805cb-654d-46a7-8f12-b5ab6e85278d.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 0x21d28e9bcacda082bb3f9785421fdc2222b19766edd7347067b09d664945da42. 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/ESA011844505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e684f29ce498ae772213b297176e7f67e158b6ae2c10c7d0c009ef0077d545b. 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/COF018900227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee42cd1e820a2ad061f65e2edf44c1669a12e1c2d5631376355304edb72175d8. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T21:00:26Z), 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/COF018900235.
Historia Musical de Tito Cortés: 40 Exitos de Taberna
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a9836f57dca2b637ca0de404c9f72ad05fce01d7ac8aa091e2e2cf5d805c9ed. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:38:28Z), 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/COF010012705.
Éxitos: Te Vas/ Vuelve/ Alma/ Derrumbe/ Olvídame/ Parece Mentira/ Amor Prohibido
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28babc61bcf80cd1a325336636bfa0dede852c6f9c49effa5762cf46292570d8. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:05:37Z), 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/GBSMU3720426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b1a19b8e3403437fb873bbaf4e723299f84edcf2323a39514712a1900840da. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/ESA011844495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15eed39641e53e09a8ed8981d9194acd95eede9fd951472b627bb303a620da28. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/ESA011844500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994dc99a94a22cbff40482661a9266e9a1b136896315fe9882be1af9f47a4bda. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ESA011844501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc9a3a886694df2f937f028581ef53e449bbd75006decc6628cb2d465f61cc3. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:23:53Z), 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/ESA011844503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aa173e41272903633442e23a7a7eda7ba52c8e5323d00ee51ff08ca0faf412a. 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/ESA011844506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x948c6ab1f6af4a9b42c1b80caa5d317c077394ed099b40d7859da681328820c6. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ESA011844497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d28e9bcacda082bb3f9785421fdc2222b19766edd7347067b09d664945da42. 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/ESA011844505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de14ecb3e88352be173c0c2c26924f6501f75338d6116033a04ee9f147c92f2. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/ESA012001129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe08263ce8c79421d986721a3914228ca5688f1c0fa6b8a9a6e9458ad0afe96. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/ESA011846716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x460b4c159b252d8e075a794114596ba0064d45dd225db0f11e516305eead8efd. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/ESA011845463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc917659bbdf2680a200d5152beace376814e65358467d30e4a70007a74598d5f. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:42:59Z), 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/ESA011844510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd40769bbccae36f2e421c6fa470ce7e2534d41b804c8964f12fde8e903e436d. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:07:31Z), 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/QZNJV2549717.