1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x13fdc2e7a30ae39db4f001a7920a489cc4eaf07426762929751ba444acf1fda8. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b10442f3-c312-48c9-89b0-95301f8ffea0.json and https://artists.proofprofile.net/proofs/artist/b10442f3-c312-48c9-89b0-95301f8ffea0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Night Blooming Jazzmen (Leonard Feather All Stars)
Drink To Me Only With Thine Eyes - Original
Drink To Me Only With Thine Eyes (09-12-38)
Drink to Me Only With Thine Eyes - Original Mix
For He's a Jolly Good Fellow - Original Mix
There's a Tavern in the Town - Original Mix
Schellack Schätze: Treasures on 78 RPM from Berlin, Europe and the World, Vol. 8 (Remastered 2018)
First Steps: First Recordings From The Creators Of Modern Jazz