Bandboy (also expressed as band boy) is a bygone term for a job similar to for what now is known as a "roadie." They set up, tear down, and maintain equipment, and music. They help out backstage wit
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 0xdb33db1d5656d925e9781725211f9f7ca8a3c7fe98da80daf944ab1b9b5c422e. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f721c97a-1bd8-43c5-bfb4-84343dd39e8d.json and https://artists.proofprofile.net/proofs/artist/f721c97a-1bd8-43c5-bfb4-84343dd39e8d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).