Aleksei (Albert) Dmitriyevich Maslennikov (; September 9, 1929 – November 30, 2016) was a Russian tenor. Maslennikov was born in Novocherkassk, Russia. In 1953 he studied at the Moscow Conservatory
{"copyright_id":"0xc97dcb26c6c6651f1ce63bfdc0e69f1db919c842ac9d6ef5ce2b234b1fffb0d7","name":"Aleksei Maslennikov","registered_at":"2026-06-15T20:38:47Z","symbol":"NIM0825365","token_address":"0x8bcd8a447df889aca1481751b1a0a16cbedf13cc","type":"artist","uuid":"143fc43a-b4f7-447c-9fca-509f3f2bd73b"}
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 0xc97dcb26c6c6651f1ce63bfdc0e69f1db919c842ac9d6ef5ce2b234b1fffb0d7. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/143fc43a-b4f7-447c-9fca-509f3f2bd73b.json and https://artists.proofprofile.net/proofs/artist/143fc43a-b4f7-447c-9fca-509f3f2bd73b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Schumann: Dichterliebe, Fantasie In C Major