Vika may refer to: __NOTOC__ Persons Short form of Victoria (and variants) in Eastern Europe Vika Bull, one of an Australian vocal duo of sisters, Vika and Linda Vika Jigulina (born 1986), Romanian
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 0x6894cf2041e825b8275aa9888455474d571c2f3699628c2a5e2bf5a95677d631. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/04c8bfd0-5056-442e-ade8-5ee28b7b1375.json and https://artists.proofprofile.net/proofs/artist/04c8bfd0-5056-442e-ade8-5ee28b7b1375.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).