A&J may refer to: Adam and Joe, British comedy performers Arlo and Janis, comic strip A. & J. Inglis, shipbuilding firm founded in 1862 by Anthony Inglis and his brother John in Glasgow, Scotland
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 0xe56821516b6494e635cc31dd16ad7060387241b95d5dd2555e529a3508b4132f. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d14a7356-775f-4b22-b515-b5e1ce6e979e.json and https://artists.proofprofile.net/proofs/artist/d14a7356-775f-4b22-b515-b5e1ce6e979e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).