Marie Nejar (20 March 1930 – 11 May 2025), known professionally as Leila Negra was a German singer and actress of African descent. She began her career as a child film actor in the 1940s, became a sin
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 0x769548297c64873079906fe2b008063387d7e00fa48662284ede2fd27c65ba55. Chain 2 (Bitcoin): anchored in block 953617 (2026-06-14T09:00:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1d52a94f-cba3-42bf-9dad-60ef3e0311da.json and https://artists.proofprofile.net/proofs/artist/1d52a94f-cba3-42bf-9dad-60ef3e0311da.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ich möcht' so gern nach Hause geh'n (Toxi-Lied)
Ich möcht' so gern nach Hause geh'n - 50 große Erfolge
Die süßesten Früchte fressen nur die großen Tiere
Deutsche Schlager 1950 - 1951 (100 Evergreens HQ Mastering)
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 0xcd17e51e762182d9ec6f8bd641f023ad94a2b592602fb94aa33e041fc3ced61f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEZ921600656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb89c05c2617e17edced1b2041e81857598646de65b96ada6fed4f8c0f7d8bab7. 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/DEF067310670.
Die süssesten Früchte fressen nur die grossen Tiere (From 'Die süssesten Früchte')
Die schönsten Kino Melodien aus Deutschland, Vol. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd57d8cc31463aacec91973d41d7757ea45a3dcfa667e75b1e811b7c2b7ebf0a. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DELM41409243.