Head hash
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Append-only. Hash-chained. Anyone can re-verify.
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Downloads export.ndjson and recomputes every link with WebCrypto SHA-256:
hash = sha256(prevHash + "\n" + canonicalJSON(event)), genesis = 64 zeros.
Nothing is trusted from the server except the raw rows.
Bar height is traded notional (qty à price); label is the number of fills.
| Symbol | Fills | Buy qty | Sell qty | Notional |
|---|
| Seq | Time (UTC) | Type | Symbol | Side | Qty | Price | Order | Hash |
|---|