WL may refer to: Arts and entertainment Wario Land: Super Mario Land 3, a Wario Land series video game for the Game Boy The Weakest Link, a television program White Lies (band), an English indie 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 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 0x253017ff9c3e268d14b4c38353e304804e3995ea457a02e110c04f9657c5acc5. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a6ef20a2-3bb6-4790-8585-d725cf837f29.json and https://artists.proofprofile.net/proofs/artist/a6ef20a2-3bb6-4790-8585-d725cf837f29.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).