HEI

Historical Exchange Index

A quiet registry of crypto exchanges, active and gone.

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Exchange record

Butter.xyz

DEX / exchange protocol candidate represented by CoinPaprika, CoinGecko, and DefiLlama source rows. HEI treats Butter.xyz rows as one protocol-level entity for v0.

DEXActive
Also known as: Butter, butterxyz, swap.butter.xyz

Registry sequence

Key facts

Launch date
Death date
Years
—–—
Origin
Mantle ecosystem
Confidence
medium
Last verified
2026-06-03

URL handling

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

Summary

DEX / exchange protocol candidate represented by CoinPaprika, CoinGecko, and DefiLlama source rows. HEI treats Butter.xyz rows as one protocol-level entity for v0.

Timeline

Butter.xyz recorded as DEX candidate
2026-06-03listed_referencelow

Butter.xyz is recorded as a DEX / exchange protocol entity, with CoinPaprika, CoinGecko, and DefiLlama candidate rows consolidated into one HEI record.

Evidence

Butter.xyzofficial_statementhigh reliabilityentityarchive
CoinPaprikadatabase_referencemedium reliabilityentityarchive
CoinGeckodatabase_referencemedium reliabilityentityarchive
DefiLlamadatabase_referencemedium reliabilityentityarchive

Related records

Notes and record state

Record note
Added from verified-unadded rows hei_unadded_0426 through hei_unadded_0428 as one entity. This record should be improved later with stronger launch, chain, or operating-history 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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