Katrina Elizabeth Leskanich ( ; born April 10, 1960) is an American-born, UK-based singer and musician and the former lead singer of the British pop rock band Katrina and the Waves. Their song "Walkin
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 0xfc23eba013cf5e24c346b10bf29ff6e0aac6a5d7e53a9906b9f184926f52f369. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5765683f-2074-4504-86dc-ad3df9a7f723.json and https://artists.proofprofile.net/proofs/artist/5765683f-2074-4504-86dc-ad3df9a7f723.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).