Lemzo Diamono was a Senegalese musical group, well known in the 1990s. The group was mainly active from 1990 to 1998. Group members Past members Lamine Faye Alioune Mbaye Nder Salam Diallo Mada Ba Fa
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 0x9af6d8396a1791c9bed9be3cde4c14e564df830d072d71502db35efdf4b1da7f. Chain 2 (Bitcoin): anchored in block 953762 (2026-06-15T08:21:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b8b09c30-bcde-4039-a75b-4f9cea194d4a.json and https://artists.proofprofile.net/proofs/artist/b8b09c30-bcde-4039-a75b-4f9cea194d4a.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 0xc0764a0e43526021001dbcc338ad4dca2c70fb079ca037381ffc64520142ad50. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:59:15Z), 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/GBNRN0607605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23404e09f77ba8c248c51fef0b66c0780dfee475313ca0a0548dbca9535f4665. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:23:38Z), 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/GBNRN0607603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb73d13038aaf134280204cf848bf32e4e2221846609c75a420e153717222c6a7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBNRN0607607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f26e3cbd8536d335798f43f82e3db8f77a9c5c7d109ff53e640d259eeaa54fe. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/GBNRN1487001.