Bianka is a feminine given name in Hungarian, Russian, Polish, Slovak and German. People with the given name Bianka Bianka (singer) (born 1985), Russian and Belarusian singer Bianka Blume (1843–189
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 0x681665abfed056353e4fb1796059a305dd5c8d58bf34d673fcaf97c1622c7b82. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6dd4cf7d-40eb-4f0e-a363-a236a89b9fb3.json and https://artists.proofprofile.net/proofs/artist/6dd4cf7d-40eb-4f0e-a363-a236a89b9fb3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).