HEI

Historical Exchange Index

A quiet registry of crypto exchanges, active and gone.

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Exchange record

9inch

Decentralized exchange candidate identified in the HEI verified-unadded backlog from CoinPaprika and CoinGecko source data and currently treated as an active DEX record.

DEXActive
Also known as: 9inch Exchange, 9inch DEX, app.9inch.io

Registry sequence

Key facts

Launch date
Death date
Years
—–—
Origin
PulseChain ecosystem
Confidence
low
Last verified
2026-05-30

URL handling

Preferred action
Use current URL handling based on status below.
URL status
Live unverified
Archived URL

Summary

Decentralized exchange candidate identified in the HEI verified-unadded backlog from CoinPaprika and CoinGecko source data and currently treated as an active DEX record.

Timeline

9inch present in exchange source data
2026-05-30listed_referencelow

9inch appeared in the verified-unadded candidate generator from CoinPaprika and CoinGecko source data as an exchange-like DEX candidate not found in current HEI records.

Evidence

CoinPaprikadatabase_referencemedium reliabilityentityarchive
CoinGeckodatabase_referencemedium reliabilityentityarchive

Related records

Notes and record state

Record note
Added from verified-unadded backlog rows hei_unadded_0018 and hei_unadded_0019. Source evidence is limited to CoinPaprika and CoinGecko database references, so this record should be improved later if stronger official-history evidence is found. File slug is normalized as nine-inch while preserving 9inch as canonical_name.
Revision state
Records may be incomplete, approximate, contested, or revised as better evidence becomes available.
This record may be incomplete or revised. Dead-side entries prefer archived URLs over original domains. Dates, causes, and classifications may change when stronger evidence becomes available. Contact / corrections

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