SJT may refer to: IATA code SJT for San Angelo Regional Airport Situational judgement test, a form of psychological test The Stephen Joseph Theatre in Scarborough
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 0x92128a8a389ec2229d31b6f8cd66262dba2f8ddc9079631301bb4abc518280b3. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/70c06916-ea8e-47c0-afd6-be99180a8e16.json and https://artists.proofprofile.net/proofs/artist/70c06916-ea8e-47c0-afd6-be99180a8e16.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).