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 0xc64f3ab29abbc9b4058f82106ca6cf6ab03930fedd2198ec4ec5ad3e04f4f567. Chain 2 (Bitcoin): anchored in block 953928 (2026-06-16T10:21:55Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1d8d0b2e-14b9-401f-8b13-c3fde5eb58f1.json and https://artists.proofprofile.net/proofs/artist/1d8d0b2e-14b9-401f-8b13-c3fde5eb58f1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Norwegian Saxophone: Romberg / Aagaard-Nilsen / Habbestad
Stories From the North - Music by Bodvar Drotninghaug Moe
The Heart, It Soars: III. All Seasons Must Pass
Trio for Viola, Tenor Saxophone and Piano, Op. 47: III. Duett. Lebhaft
Tres flores for Viola, Tenor Saxophone and Piano, Op. 97: II. Viola cornuta