The Park Avenue Chamber Symphony (PACS) is a classical symphony orchestra based in New York City. The orchestra has performed at Lincoln Center and Carnegie Hall and won The American Prize Competitio
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 0xa3c878f9d823751fa39f9235ec00c53a0399178a6f7bad7c763d15dc3286d7f6. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0048102b-95c8-4336-81bb-d83f259c1d6e.json and https://artists.proofprofile.net/proofs/artist/0048102b-95c8-4336-81bb-d83f259c1d6e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mendelssohn: Symphony No. 4, 'Italian' - Schubert: Symphony No. 8, 'Unfinished'
Schumann: Symphony No. 2 in C Major, Op. 61 - Brahms: Symphony No. 3 in F Major, Op. 90