Data contracts / ledger

Foundry IR economics

Point-in-time daily ledger of Foundry IR economics — every move dated and sourced.

Coverage window

2026-07-12 → 2026-09-17 (6,334 rows)

Computed from the backing series at page-render time — never typed by hand.

History honesty

History accrues in place from the ledger start (2026-06-06) — append-only, never backfilled; depth before the start cannot exist.

Cadence

Ledger snapshots daily at 08:00 UTC; movements appear only when a value actually moves. Empty window = nothing moved.

Revision policy

Append-only: a frozen day is never edited or deleted (database-enforced). Corrections are registered in data_corrections and served alongside; restatements surface via /api/v1/changes.

Sources (source)

Derived from public IR facts (investor.tsmc.com) — rev-mix-v1 (574) · Derived from public IR facts (smic.cdn.shwebspace.com) — rev-blend-v1 (192) · Derived from public IR facts (fool.com) — rev-mix-v1 (68) · Derived from public IR facts (www1.hkexnews.hk) — rev-blend-v1 (64) · Derived from public IR facts (finance.yahoo.com) — rev-blend-v1 (64) · Derived from public IR facts (nasdaq.com) — rev-mix-v1 (38)

Known gaps

Known-gaps review pending — the coverage boundaries above are computed and current, but the curator’s qualitative gaps assessment has not been written yet. We state that rather than inventing one.

Access

Fully open

API: /api/v1/snapshot

Machine-readable

/api/v1/catalog/ledger-foundry_economics/contract