Johnboy (preferred spelling) was a noise rock band from Austin, Texas, formed in the summer of 1991 by Barry Stone (guitar and vocals), Tony Bice (bass and vocals), and Jason Meade (drums). The three
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 0x7cbbbe0fd6c1de041466cff3f191fef039e76076fcb8c867b1c161580e3ff66c. Chain 2 (Bitcoin): anchored in block 954615 (2026-06-20T22:44:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c5d0c6cf-92bf-466a-afd1-e1e1933f5afb.json and https://artists.proofprofile.net/proofs/artist/c5d0c6cf-92bf-466a-afd1-e1e1933f5afb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).