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 0xeda4e8afbc03ad515aa6af8a87f8856f9ac74ff3300717ccd4bd91afa0649c28. 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/a17167bf-b9f7-44e3-9e50-d5a05e13d19b.json and https://artists.proofprofile.net/proofs/artist/a17167bf-b9f7-44e3-9e50-d5a05e13d19b.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 0xcba3cb8f1afa323a98baa82fb016a2891976c2875f634df7d8961607849b17e0. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/GBYPK0800372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc219371aa82fa640788339835867c362681cb3bd787f7cef2161c0d99d0a0652. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/GBJLH0703501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fec9761952b0a770aee731fa205bee75540d4d1e821054f49e2ad5fcad6917e. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/GBYPK0800266.
I Think I Like It (Mauro Mejia Sabroso Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66d8570ed4edfa73051d73137b08e6a06e9218264605b6db10dfead5b0ffc18. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GBENL1200676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13164ad1a65c0450bb3a10215956bb116f3a6743873fa388d6c4475dc9f4d2c1. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/GBENL1200712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d2c2eaafd52a04b7e2c0306e47026751e7b96d734ff204928e239ba21bf804. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/GBENL1200713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd499452a3fcbb4e27b683debc92171b81e1382a8a0b99f09c646aeedf3b84860. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/FR2X41415588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x149d5368a4fefc74ea3176bef0900e7d6f3ff9a7fe2a9146d4e4245d8e5b084e. 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/GBF3S1100099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05a43de92c03498692ad4404c67014c61116e7f4561e658f5fcaf8e63723f19. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T04:30:07Z), 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/GBF3S1100100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e39d09b4de94052980cb51f40be01c05f1bddbd66be19378219cf1b022c6cc6. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/GBF3S1100101.
A Dark Ocean (Inspired by ‘The Outlaw Ocean’ a book by Ian Urbina)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7662866ca60969e4a95a5e96692ce1d6a3d09e58f96e75aeddbc99a6baa0cea. 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/GBFFM2429144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c337dd1ce636b2bb5c7ef4a9362ed8aa76debccba09d1ebed3d1aa69610213. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/GBCEL0700544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5fcb2507465a2881a703ebd27f1e11ccf2a6d4ef7767971db247b2a66aaded7. 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/GBENL1200760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8f566fc60bf5d656c86731f31c2da648bd779434c854705035771be068af75. 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/GBJLH0703674.
Bloody Beats, Vol. 3 (The Sound of the Underground)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc2e887c980ff52689c81802c555254cd028a55918954cf1b31f8ac64a3c65b1. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/GBGNS0800351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb01336c7d928f14070a08aea177550eac4c7b0d81bfb5e080a9634379031189. 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/UKNFN1900012.