A bootleg is the upper part (or shaft) of a boot. Bootleg, bootlegging or bootlegger(s) may also refer to: Common meanings Rum-running, the illegal business of transporting and trading in alcohol
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 0x3dfb53a9b5543a2883e2e2bb21c8bf7cc795f163a264642dc099919ea1f3b18d. 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/5564d539-bf07-445d-a0f8-5d3bfdc9a29c.json and https://artists.proofprofile.net/proofs/artist/5564d539-bf07-445d-a0f8-5d3bfdc9a29c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).