Open & Auditable
Contribute data
This ledger grows by review, not by scraping. Every price and market note enters through a public pipeline with two human checkpoints, so what gets published is open, attributable, and reversible by anyone reading the git history.
See what governs each accepted value in the methodology, or the registry it draws from in Sources.
How data gets in
Two checkpoints stand between a submission and the public dataset: a maintainer's review, and a merged pull request. Neither can be skipped.
- 1
Open a structured issue
Use one of the templates below. Required fields (element, price, form, purity, quantity, source, and date) are enforced by the form, so a submission arrives complete.
- 2
Maintainer reads and labels it
Human checkpoint 1No automation touches the data until a maintainer reads the issue and applies the `approved` label. Stale, mistyped, or speculative submissions stop here.
- 3
A pull request opens
A manually-dispatched workflow validates the fields with the same rules used for every price and opens a PR adding one observation. It never runs automatically on issue creation.
- 4
Review and merge
Human checkpoint 2Merging the PR is what publishes the change, as a reviewable git diff, attributed and dated. Closing it without merging discards the submission cleanly.
Two checkpoints, no silent edits
What makes a submission usable
- A real source. A seller name and, where possible, a URL, something a reviewer can open and check. Anonymous or unverifiable listings are excluded.
- Form, purity, quantity. A price is only comparable with its form (metal/oxide/…), purity, and the quantity it applies to.
- An observation date. The date you saw the price, never an ingestion date dressed up as a quote date.
- No guessing. A missing field is left blank, not filled in to complete the record.
How we verify every price
- Two reference prices: a retail reference and a bulk benchmark, tracked separately and never averaged into one number.
- Confidence + verification: every record carries a 0 to 1 confidence score and an explicit verification status.
- Validated provenance: three intake paths, each one named, dated, attributed, and validated, never invented.
What's actually in the ledger
The current intake mix, regenerated from the data, including the paths that read zero today.
Intake mix
How the data got here
- Public listings219 · 76.8%
- Aggregates (medians)47 · 16.5%
- Benchmarks / price-reporting agencies19 · 6.7%
- Community submissions0 · 0%
- Supplier quotes0 · 0%
- Invoices0 · 0%