Historical Exchange Index
Evidence-aware registry of crypto exchanges, active and gone
What is Historical Exchange Index?
Historical Exchange Index is a public registry for crypto exchanges, active and gone. Instead of focusing on prices, rankings, or trading metrics, it treats exchanges as records with their own identity, timeline, and evidence trail. HEI separates entity, event, and evidence, tracks closures, acquisitions, rebrands, and enforcement-driven shutdowns, and uses archive-aware URL handling for dead-side entries where original domains may no longer be trustworthy.
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