Klezmofobia is a klezmerband from Denmark with Bjarke Kolerus on clarinet, Ole Reimer on trumpet, Andreas Ugorskij on guitar, Jesper Lund on bass balalaika, Jonatan Aisen on drums and Channe Nussbaum
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 0xbc54a7845c6793b115e977535bbecf05c0985c121436d6f82e60fb2fe8b75a62. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f8dfe5c8-1834-41b5-a88f-5e35c49da2ae.json and https://artists.proofprofile.net/proofs/artist/f8dfe5c8-1834-41b5-a88f-5e35c49da2ae.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).