Being cited is how a benchmark acquires users, and how a standard position hardens. All data is CC BY 4.0 — citation has one requirement only: attribution + methodology version + DOI. The cards below update their values every day, so copying one never pins a stale level.
Four cards for four situations: Chinese-language prose, English prose, Markdown links, and structured citations for AI engines.
Every file below is public, free and needs no registration. Journalists are already quoting individual TRACE prints — here is a ready-made continuous series, at zero switching cost.
| What you get | Endpoint | Update |
|---|---|---|
| Same-day levels for all three tiers (Composite / HY / IG, with 1d/5d/30d changes) | /api/v1/latest.json | Every trading day, T+1 |
| 90-day index series (all three tiers, daily) | /api/v1/history.json | Every trading day, T+1 |
| Constituents and per-bond spreads (20 bonds, face-value weights) | /api/v1/constituents.json | Every trading day, T+1 |
| Change attribution (who moved the level today) | /api/v1/attribution.json | Every trading day, T+1 |
| Weekly bulletin (weekly levels + attribution + outliers) | feed.xml · feed.json | Every Monday |
| Embeddable badge (single <img>, carries its own as-of) | /badge/ncsx-composite.svg | Every trading day, T+1 |
Logged publicly, one by one: press, research notes, AI answers. Making the citation flywheel visible — this page is itself accumulating evidence of a standard position.
No external citations logged yet — the number is honest; we do not pad it with self-citations.
The first one will probably come from you: if you see NCSX in an article, a research note or an AI answer,
send the link and we will log and link back within 24 hours.