Nah Traoré - Mariam Tounkara - Pamela Badjogo Mapaha - Mariam Maïga - Ibrahim Maïga - Jules Minck - Alice Minck - Oumou Sangare - Idrisaa Soumaoro
{"copyright_id":"0x79fe912e70912d6035342f96a6cf417604071424edb23e3748edb8f6809d01a8","name":"Nah Traoré - Mariam Tounkara - Pamela Badjogo Mapaha - Mariam Maïga - Ibrahim Maïga - Jules Minck - Alice Minck - Oumou Sangare - Idrisaa Soumaoro","registered_at":"2026-06-17T06:48:18Z","symbol":"NIM1314500","token_address":"0x7c95eceb8f2b3bf46f3d678e4b4c9ae0d07697f2","type":"artist","uuid":"76489bfb-0880-414b-b5bc-3addb05144c2"}
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 0x79fe912e70912d6035342f96a6cf417604071424edb23e3748edb8f6809d01a8. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/76489bfb-0880-414b-b5bc-3addb05144c2.json and https://artists.proofprofile.net/proofs/artist/76489bfb-0880-414b-b5bc-3addb05144c2.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 0x057805868dac7f96c9bb161a44a4a3fb0981a1cf8aaf3b06389824ba042f7274. 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/FRZ110701846.