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 0x9f1e2678e1c84acf9ff1cbd20130879b49108c21ed14778cfa39c4af511335e3. Chain 2 (Bitcoin): anchored in block 954647 (2026-06-21T04:36:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d6ff84d5-4fa2-4e93-b39f-017f90b67f82.json and https://artists.proofprofile.net/proofs/artist/d6ff84d5-4fa2-4e93-b39f-017f90b67f82.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Pierce Plays Brahms: Piano Concerto No. 2 in B-Flat; Franck: Les Djinns – Symphonic Poem; Weber: Concertstück in F Minor
Franz Liszt: Piano Concertos Nos. 1-3, Concerto Pathétique, Hungarian Rhapsody, Malediction, Rhapsodie Espagnole, Totentanz, Wanderer Fantasy