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 0xc39dec734ad20ab08dea2b3c0aff3e5a725f210b0ec2d9ca5c363b1c32544b95. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4c35a693-1719-48e1-beb1-b5ae73248815.json and https://artists.proofprofile.net/proofs/artist/4c35a693-1719-48e1-beb1-b5ae73248815.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
First Repertoire Pieces for Alto Saxophone
Learn as You Play: Saxophone (Alto Accompaniment Tracks)
Learn as You Play: Clarinet (Performance Tracks)
Learn as You Play | Oboe (Accompaniment Tracks)
Learn as You Play | Flute (Accompaniment Tracks)
Learn as You Play: Saxophone (Alto Performance Tracks)
Learn as You Play | Oboe (Performance Tracks)
Learn as You Play: Clarinet (Accompaniment Tracks)
Learn as You Play | Flute (Performance Tracks)
Learn as You Play: Trumpet, Cornet & Flugelhorn (Accompaniment Tracks)
Learn as You Play: Trumpet, Cornet & Flugelhorn (Performance Tracks)