Krysia Osostowicz FGS (born 1960) is a violin player who teaches at the Guildhall School of Music. She is the leader of the Brodsky Quartet and principal violinist with the Endymion Ensemble. She prev
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 0x06fc6634c6442cc99a0c5db4315c4a3d0ceae718fd3de0f4265c2a71375a5eed. Chain 2 (Bitcoin): anchored in block 953970 (2026-06-16T16:09:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2a21e562-543d-4cba-a729-17fd844b8bce.json and https://artists.proofprofile.net/proofs/artist/2a21e562-543d-4cba-a729-17fd844b8bce.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).