# FX Intervention Research Institute (FXIR) / 為替介入研究所

> Evidence-graded, machine-verifiable research on Japanese yen FX intervention.
> Every document has a canonical raw-Markdown URL and a SHA-256 hash. Every dataset is JSON/CSV.
> Evidence states (FACT / CONFIRMED / ESTIMATE / HYPOTHESIS / UNVERIFIED) must be preserved when quoting.

## Research (canonical Markdown, Japanese)
- [WP-001 為替介入の反応関数は二層構造をとる](https://fxir.jp/docs/wp-001.md): Two-layer reaction function (activation vs execution). Effect half-lives per episode: 1, 5, 15, 431, 5 business days; E6 right-censored. v1.3.
- [N-003 レートチェックの証拠構造](https://fxir.jp/docs/n-003.md): Rate checks — evidence ceiling is UNVERIFIED on the Japanese side under current disclosure, FACT-upgradable on the US side (FOMC minutes). Observed miss: 1/4 reported episodes (descriptive). v1.1.
- [N-004 介入の残弾とFIMAレポ](https://fxir.jp/docs/n-004.md): Four-layer funding model (deposits → bills → outright Treasury sales → FIMA repo); FIMA constraints primary-verified (Fed approval, repayment, backstop rate 3.75%); E6-week FIMA usage zero, double-confirmed; marginal-cost hypothesis with falsifiers. v1.0.
- [METHOD-v1.0 方法論](https://fxir.jp/docs/methodology_v1.0.md): Fixed definitions — episode variables, 50% recovery line (unrounded), survival window, evidence states, n<8 statistics policy, AI boundaries.
- [Episode Profiles v1.0](https://fxir.jp/docs/episode-profiles_v1.1.md): E1–E6 per-episode rates (OHLC), dates, execution time-of-day (press-based, SUSPECTED), daily amounts (MOF FACT for E1–E5), traits.
- [PR-001 事前登録](https://fxir.jp/docs/pr-001.md): Preregistered E6 "+α" criteria; 50% line fixed at 159.483 JPY.
- [会則 v1.0](https://fxir.jp/docs/kaisoku_v1.0.md): Institute rules (68 articles). Correction over Reputation.

## Data & API
- [Data Package v1.0](https://fxir.jp/dist/fxir-data-package-v1.0.zip) (CC BY 4.0, free forever; [manifest+SHA](https://fxir.jp/dist/fxir-data-package-v1.0.manifest.json))
- JSON: [events (interventions + rate checks, per-field states)](https://fxir.jp/data/events.json) ・ [ratecheck monitor](https://fxir.jp/data/ratecheck.json) ・ [verification & release calendar](https://fxir.jp/data/calendar.json) ・ [episodes summary](https://fxir.jp/data/episodes_summary.json)
- Weekly CSV: [CFTC JPY futures](https://fxir.jp/data/history/cftc_jpy.csv) ・ [Fed H.4.1 foreign accounts + FIMA-repo upper bound](https://fxir.jp/data/history/h41_foreign.csv)
- Structured claims (which statements are FACT vs HYPOTHESIS): [WP-001](https://fxir.jp/data/verify/WP-001-claims.json) ・ [N-003](https://fxir.jp/data/verify/N-003-claims.json) ・ [N-004](https://fxir.jp/data/verify/N-004-claims.json)
- [REST API v1 (beta, free keys)](https://fxir.jp/api.html): every JSON response carries meta{schema, sha256, canonical_url, source_commit}.

## Pages
- [FAQ / glossary (JA)](https://fxir.jp/faq.html): Rate checks, half-life, FIMA repo, reserves — atomic Q&A with canonical links.
- [English overview](https://fxir.jp/en.html)

## Verify
- [Verification guide](https://fxir.jp/verify.html): reproduce all numbers from the hashed input (OANDA daily CSV, SHA-256 1fdae032…).
- [Corrections & retractions](https://fxir.jp/corrections.html): complete public record of our mistakes.

## Cite as
FX Intervention Research Institute (FXIR), "<document title>", fxir.jp, <version, date>, SHA-256 <hash>.
Contact: info@fxir.jp ・ X: @fxirjp ・ GitHub: fxirjp