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 0x1592d83b3da559e4819b65d7717b49601d57f9ce90e02437f28bcc40a6b88511. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2eef7a12-6eb0-46f7-a2a9-63cd0a2eb1f0.json and https://artists.proofprofile.net/proofs/artist/2eef7a12-6eb0-46f7-a2a9-63cd0a2eb1f0.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Headbanger (Baby Metal) [Dubstep Bootleg Version]
Un Poco Loco (CoCo) [Melbourne Bounce Bootleg Version]
Una Lagrima Que Dar (El Cadaver De La Novia) [Bootleg Version]
Una Lagrima Que Dar (El Cadaver De La Novia) - Bootleg Version
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 0x7e3813cc951b6bf748a8f5c70e4def2180ebe132aabe3b9691bb8694dda06a24. Chain 2 (Bitcoin): anchored in block 958602 (2026-07-18T19:28:16Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB52385710 — a six-check JSON result.
La Tequilera X AngelaAguilar Bootleg (Special Version)
Cumbia Buena (MisterCumbia) [CumbiaStep Bootleg Version]
Cumbia Buena (MisterCumbia) - CumbiaStep Bootleg Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05dbc9490e3fb989b900859329d10520ea1ff65ccac31ad9896a9ed1fffb709c. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB62380683 — a six-check JSON result.
Oke (Maddy Soma) [Dubstep Bootleg Version]
Pedro Pedro Pedro (Dubstep Remix Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bad57e87bea54cee2b6745a7823bca28ef37734b1759f0bf0d4423d9a3eccc7. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFL2437747 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x074e733910fef8d4c1f46537868b07820f106f31eecd3dbe96b1dafc33415ac5. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFYZ2586941 — a six-check JSON result.
La Morra Belicona / Mister Cumbia (Cumbiastep Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6525de7744b90411d89b6b76696ee61ce24f2c813f1d50c75287254f84f6f80. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN72529702 — a six-check JSON result.
Lava Chicken / Jack Black (Bootleg Dubstep Version)
Lava Chicken / Jack Black - Bootleg Dubstep Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x919739795419018e582f9b3f81016be004801eb48c1b697bcc44f08d523f133e. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWX2512518 — a six-check JSON result.