Every market-state evaluation since live operation began, one file per UTC day. Nothing is edited or removed afterwards: each day's SHA-256 includes the previous day's hash, so changing any past line would change every later hash. Each day's hash can also be committed to a public GitHub repository, whose commit time proves it existed that day.
GitHub anchoring is not switched on yet. The hash chain is complete, but no day has been published to GitHub, so the dates are not yet independently provable.
Download the day's file, then compute SHA-256 over the previous day's hash, a newline, and the file exactly as downloaded. The first day uses 64 zeros as the previous hash.
{ printf '%s\n' "$PREVIOUS_SHA256"; cat day.txt; } | sha256sumLine format v1: instrument, bar close, computed at, L (computed live) or R (replayed after an outage), overall state, per side WATCH or NO_TRADE with the reasons, daily trend, 4-hour trend, volatility.
e95bc2bd43abfa9b5cae269afd83259b010ade475f9b7d2e2df3ff5d9562c843378145abdbd0c8cbd531df65426dc819689e2b8e63c11cf79b6fd751289725cb67d89ec678c4389b50c9c766b875845cdcde7e68fa0fa4f821137e3eac7b11fce28cdf307466e271542e53e46a41773c6fc59a6130b033fa0383caa8fd7d613e65c5f14cc6ecdddf5def3379c7a1746b6d12c666c115ef1d29d26086f34795b4