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 0xc2b27cc3fa0d02f31758d3c577c9a0c0a2835a67f54ac87ca142a711f4bbc0a7. Chain 2 (Bitcoin): anchored in block 953907 (2026-06-16T07:39:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/15444548-5bd6-4338-8df9-53c549eefb4d.json and https://artists.proofprofile.net/proofs/artist/15444548-5bd6-4338-8df9-53c549eefb4d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Gang (feat. Chabodo, L'Expert, Stone Flexance & Nosiiila)
Gang (feat. Chabodo, L’Expert, Stone Flexance & Nosiiila)
Quitte (feat. La Fouine, Chabodo, Stone Flexance, Canardo, 13or, Poison, Pouf-pouf, Nosiiila, Weedy, H double L, Gued’1)
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 0xfff3d900f388c72790dd9c8a45e14d241b802476076b727da8d2267a5f91b3b8. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FR9W12216566.
Mafia (feat. Diaz, SFE, Bosh, Dom’s L’Expert, Toussaint, Stone Flexance, Chabodo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e1041a3087cf8db2a634d1e059dcbb86b3c7309b3d8756893fe7fac040be126. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FR9W12216580.