Nathalia Milstein (born in 1995) is a French classical pianist. Biography Born in Lyon, Milstein was born into a family of Russian musicians, and was initiated to the piano by her father Serguei Mi
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 0xed5a9360c3be59de1b54104f766da2209c00a7739ccf045d5c34c9f7e778cc1d. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/47c19673-e617-40fb-98ee-647ff8e84425.json and https://artists.proofprofile.net/proofs/artist/47c19673-e617-40fb-98ee-647ff8e84425.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
La sonate de Vinteuil - Saint-Saëns, Debussy, Hahn & Pierné
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 0xe90a072e8c8f968de63712c0dd2acfc5b9820a2e6b766a2af04d7e2c0e9f3421. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:08:49Z), 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/FRU621738404.
Les Chansons grises: V. L'heure exquise (Arr. Milstein)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2af127c72d1e464b9f8e0c294cecbc00d6523dbec8075e32aaa5edc5c99fe04. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:48:56Z), 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/FRU621738409.