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 0x6030a6f06584e9aea24bf7710f6ee4061c796f92dfb0f893716a94cc18f1eb35. Chain 2 (Bitcoin): anchored in block 954027 (2026-06-17T00:55:08Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3841c6f5-f889-46f9-be9e-70a92904e8fd.json and https://artists.proofprofile.net/proofs/artist/3841c6f5-f889-46f9-be9e-70a92904e8fd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mauro Bertoli - Rhapsody in Blue and Others Solo Piano Pieces
Piano Works By Scarlatti, Schumann, Granados and Ginastera
Benedetto Marcello: Allegretto and Presto - Mattia Vento: Largo - Domenico Paradisi: Toccata - Muzio Clementi: Sonata Op.47 N.2 and Sonata Op.26 N.3 - Giuseppe Martucci: Romanza Facile and Melodia - F. Busoni: Diario Indiano - F. Liszt: Impromptu Sw150
Bertoli Luciano & Mauro: Melodramas for Piano and Narrator - F. Liszt: Lenore S.346, Des Todten Dichter Liebe S.349, Der Taurige Mönch S.348 / R. Strauss: Das Schloss Am Meere / D. Milhaud: L'album Di Madame Bovary
Debussy: Arabesques - Satie: Gnosiennes - Poulenc: 3 Novelettes - Beethoven: Fur Elise, Bagatelles Op. 126, Rondo Op. 129 - Mendelssohn: Rondo Capriccioso Op. 14 - Brahms: Sonata No. 1 Op. 1
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 0xe2648747b4dfb4576a8529084c6b8a0338e2a6a7a671c55daa8c466f6a8a81e6. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USHM21600773.