JK Index Whitepaper
TCG market intelligence, built around the moments before the market moves.
JK Index is a TCG market intelligence layer built for collectors, sellers, and shops who need better data, better context, and better ways to act before the market moves.
Catalog
63k+ cards
A broad identity layer for supported TCG products.
Market Memory
5.5m+ sales
Backfilled records powering historical context.
Flagship Primitive
Before the Slab
Market structure around raw-to-graded uncertainty.
Docs
Whitepaper sections
Updated 2026-06-03
What is JK Index?
The product thesis: collector-first TCG market intelligence, not a single Pokémon-only price page.
Before the Slab
The flagship primitive: market structure around raw-to-graded uncertainty before the slab comes back.
Why the Market Needs This
Fragmented comps, raw/graded confusion, condition risk, and missing pre-grade market memory.
The Infrastructure Layer
Catalog identity, sales ingestion, portfolios, marketplace rails, and settlement infrastructure.
Roadmap
What exists today, what is near-term, and what remains future direction.
Mission
The reason JK Index exists: make TCG markets clearer and more useful for collectors.
Current product, future direction
These docs separate what exists today from what JK Index is still building. Practice Before the Slab markets and marketplace beta surfaces are described carefully. Future real rails, broader grader support, and deeper marketplace connection are roadmap direction, not live claims.