How we build checklists

Checklist data is only useful if you can trust the numbers. Every figure on this site is traced to the document it came from, and we publish that trail on each set page.

Where the data comes from

We work from official manufacturer checklist workbooks and sell sheets — the same files distributed to hobby shops through authorized distributors. We do not transcribe from other checklist databases, price guides or collector wikis. Each set page lists the source file, its publisher, the date we retrieved it, and a SHA-256 hash of the exact file we parsed.

How it gets processed

1. Retrieve the official workbook and record its hash.
2. Parse every row programmatically — no manual re-typing, no sampling.
3. Reconstruct the hierarchy. Manufacturer files flatten base sets and their parallels into one column. We rebuild the real structure so a parallel is attached to its subset rather than masquerading as a separate set.
4. Cross-check set sizes, print runs and box configuration against the official sell sheet.
5. Validate before publishing: card numbers must be unique within a subset, print runs must fall in a plausible range, and any parallel with inconsistent numbering is flagged for manual review.

What we do not publish

• Card values or price estimates. Valuations are editorial judgments owned by whoever produced them.
• Card images. Card artwork carries layered rights we do not hold.
• Anything we cannot source. If a figure is not in an official document, it is not on the page.

Corrections

Manufacturer checklists get revised after release, and parsing is never perfect. If a number looks wrong, tell us — corrections are published with a dated changelog entry on the affected page.

Currently catalogued: 133 sets, 153,813 cards.