Iva Frühlingová (born 11 May 1982 in Litvínov, Czechoslovakia) is a Czech female singer and model, famous in the Czech Republic and France. Despite her Czech descent she sings mostly in French. Biog
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f969ae8fc95987c4d757b1396cfdb1a4f3ea3d27ced8faa3f0738c456a83e74. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/951469db-0ea8-46c1-a9c0-430c98a72d7a.json and https://artists.proofprofile.net/proofs/artist/951469db-0ea8-46c1-a9c0-430c98a72d7a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).