HEI

Historical Exchange Index

A quiet registry of crypto exchanges, active and gone.

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Exchange record

0x Protocol

Decentralized exchange liquidity and swap infrastructure protocol that aggregates and routes token swaps across on-chain liquidity sources and remains active under the 0x brand.

DEXActive
Also known as: 0x, 0x API, 0x Swap API, 0x Exchange Proxy

Registry sequence

Previous
No previous entry in this side.

Key facts

Launch date
Death date
Years
—–—
Origin
Ethereum ecosystem
Confidence
medium
Last verified
2026-05-29

URL handling

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

Summary

Decentralized exchange liquidity and swap infrastructure protocol that aggregates and routes token swaps across on-chain liquidity sources and remains active under the 0x brand.

Timeline

0x Protocol present in DEX aggregation source data
2026-05-29listed_referencelow

0x Protocol appeared in the verified-unadded candidate generator from DefiLlama source data as a DEX aggregation and liquidity-routing protocol not found in current HEI records.

Evidence

0xofficial_statementhigh reliabilityentityarchive
DefiLlamadatabase_referencemedium reliabilityentityarchive

Related records

Notes and record state

Record note
Added from verified-unadded backlog row hei_unadded_0002. Slug is normalized as zero-x-protocol to avoid path ambiguity while preserving 0x as canonical alias. Launch date is left null pending stronger date-specific evidence.
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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