HEI

Historical Exchange Index

A quiet registry of crypto exchanges, active and gone.

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Exchange record

Oxium

Sei-based fully onchain central limit order book decentralized exchange supporting spot trading, perpetuals, liquidity strategies, and hook-based offers. On June 25, 2026, Oxium announced an orderly wind-down because unfavorable market conditions and low revenue made continued operation financially unsustainable. Its front-end interface is scheduled to close on August 1, 2026.

DEXLimited
Also known as: Oxium DEX, Oxium CLOB, oxiumxyz

Registry sequence

Key facts

Launch date
Death date
Years
—–—
Origin
Sei ecosystem
Confidence
high
Last verified
2026-06-30

URL handling

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

Summary

Sei-based fully onchain central limit order book decentralized exchange supporting spot trading, perpetuals, liquidity strategies, and hook-based offers. On June 25, 2026, Oxium announced an orderly wind-down because unfavorable market conditions and low revenue made continued operation financially unsustainable. Its front-end interface is scheduled to close on August 1, 2026.

Timeline

Oxium announced an August 2026 wind-down
2026-06-25shutdown_announcedcritical

Oxium announced that it would wind down operations and close its front-end interface on August 1, 2026 after low revenue made continued operation financially unsustainable.

Evidence

Oxium2026-06-25official_socialhigh reliabilityeventarchive
The Crypto Times2026-06-26news_articlemedium reliabilityeventarchive
ChainCatcher2026-06-27news_articlemedium reliabilityeventarchive
Oxiumofficial_statementhigh reliabilityentityarchive
Oxiumofficial_statementhigh reliabilityentityarchive

Related records

Notes and record state

Record note
HEI keeps Oxium at limited rather than dead because the announced front-end shutdown date of 2026-08-01 has not yet arrived. Users were instructed to cancel orders, close positions, and withdraw before that date; direct smart-contract recovery is expected to remain possible afterward. death_reason and death_date remain null until the terminal state is verified.
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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