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 0x2b6caffd42499d3c4e985dc6edf02e4a7bc35fb8bec7a0a06e84d49f074c0b8e. Chain 2 (Bitcoin): anchored in block 953812 (2026-06-15T17:06:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f76729c7-3fce-4241-b3de-f211dd66fe9e.json and https://artists.proofprofile.net/proofs/artist/f76729c7-3fce-4241-b3de-f211dd66fe9e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
G. Fauré: Sicilienne Op. 78 (Piano Arr. by Roxana Belibou)
J. Massenet: Meditation from Thais (Piano Arr. by Roxana Belibou)
Savatie Bastovoi: Fire Deer Song (Piano Arr. by Roxana Belibou)
Savatie Bastovoi: Four Songs Medley (Piano Arr. by Roxana Belibou)
Savatie Bastovoi: Italia (Piano Arr. by Roxana Belibou)
Offenbach: Barcarolle (Piano Arr. by Roxana Belibou)
Leo Delibes: Flower Duet (Piano Arr. by Roxana Belibou)
Bach: Air on G String (Piano Arr. by Roxana Belibou)
Elgar: Salut d'Amour (Piano Arr. by Roxana Belibou)
Vivaldi: Spring from The Four Seasons (Piano Arr. by Roxana Belibou)
Vivaldi: Summer from The Four Seasons (Piano Arr. by Roxana Belibou)
Dvorak: Theme from New World Symphony (Piano Arr. by Roxana Belibou)
Vivaldi: Autumn from The Four Seasons (Piano Arr. by Roxana Belibou)
Ceaikovski: Theme from Swan Lake (Piano Arr. by Roxana Belibou)
Vivaldi: Winter from The Four Seasons (Piano Arr. by Roxana Belibou)
Fauré: Pavane Op. 50 (Piano Arr. by Roxana Belibou)
Saint-Saëns: The Swan (Piano Arr. by Roxana Belibou)
Angels We Have Heard On High (Piano Arr. by Roxana Belibou)
Scottish Folk Song: Skye Boat Song (Piano Arr. by Roxana Belibou)
Beethoven: Theme from Symphony No. 5 (Piano Arr. by Roxana Belibou)
Bizet: Habanera from Carmen (Piano Arr. by Roxana Belibou)
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 0x21c894eeb5e37bdba6056590f5aefdc21935ebdec8d7d6154640610c339142e7. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZHNA2207390.
Mussorgsky: The Old Castle from Pictures at an Exhibition
J. S Bach: Harpsichord Concerto in F Minor (Largo)
Marcello: Adagio from Oboe Concerto in D minor (Piano)
Mozart: Non Piu Andrai from Marriage of Figaro
Mussorgsky: Promenade from Pictures at an Exhibition
Grieg: In the Hall of the Mountain King from Peer Gynt
Mozart: Queen of the Night Aria from The Magic Flute
Ion Ivanovici:Waves of the Danube (fragment)