Wanda Wiłkomirska (11 January 1929 – 1 May 2018) was a Polish violinist and academic teacher. She was known for both the classical repertoire and for her interpretation of 20th-century music, having r
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 0x12f1da6e57ec0827afce2f1d445cf66e23f1de96ae3da5795b0f1922b53256cc. Chain 2 (Bitcoin): anchored in block 954647 (2026-06-21T04:36:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d619548d-d0b2-40ab-a3f1-5e621d8755e7.json and https://artists.proofprofile.net/proofs/artist/d619548d-d0b2-40ab-a3f1-5e621d8755e7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).