A plain-table grid over a hand-rolled, zero-dependency workbook core: import CSV, edit cells, write formulas, navigate with the keyboard, select ranges, and digest a selection into a manifest fragment for downstream verifiable-compute pipelines.
WorkbookCSVZero PIIClient-Side
Scope & reliance: 🔒 All inputs are processed locally in your browser. No data is transmitted. Do not enter real personal data: use synthetic or anonymised inputs only. This is a basic workbook for agents and humans feeding a verifiable-compute pipeline, not an Excel replacement. CSV only. Deterministic logic, zero PII, CC BY 4.0.
A1
Range Digest Manifest
OCG Artifact
execution_hash
⚠ One or more cells reference a volatile function (RAND/NOW/TODAY). They resolve to a deterministic #NAME? error in this engine, but the export is flagged deterministic:false below rather than hidden.
Copies the sheet as a {"entities":[...]} table (col A = entity_name, col B = net_income_or_loss, col C = covered_taxes, row 1 treated as a header) to your clipboard and opens the chain composer in a new tab. Paste into the jurisdictional ETR step. Only GloBE Annual Filing Cycle is wired here: it is the only landed chain in chaingraph.json whose first step accepts a table-shaped entities array.