HEI

Historical Exchange Index

A quiet registry of crypto exchanges, active and gone.

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Exchange record

Blockchain.io

French multi-cryptocurrency exchange created by the Paymium team and publicly launched around January 2019 as a platform dedicated to altcoin trading. Its services and brand were later absorbed into Paymium and the original domain now redirects to the parent platform, but no reliable dated terminal announcement has been recovered.

CEXInactive
Also known as: Blockchain.io Exchange, BCIO Exchange

Registry sequence

Key facts

Launch date
2019-01-01
Death date
Years
2019–—
Origin
France
Confidence
medium
Last verified
2026-07-04

URL handling

Preferred action
Use current URL handling based on status below.
URL status
Redirected
Original URL
https://blockchain.io/
Archived URL

Summary

French multi-cryptocurrency exchange created by the Paymium team and publicly launched around January 2019 as a platform dedicated to altcoin trading. Its services and brand were later absorbed into Paymium and the original domain now redirects to the parent platform, but no reliable dated terminal announcement has been recovered.

Timeline

Blockchain.io launched as Paymium's altcoin exchange
2019-01-01launchedmedium

The Paymium team launched Blockchain.io as a French multi-cryptocurrency exchange dedicated to altcoin trading for retail and institutional users.

Evidence

Paymiumofficial_statementhigh reliabilityentityarchive
CryptoNinjas2018-02-15news_articlemedium reliabilityentityarchive
CoinMarketCapdatabase_referencemedium reliabilitylaunch_datearchive
TrustFinancedatabase_referencemedium reliabilitystatusarchive

Notes and record state

Record note
Paymium's current company history preserves Blockchain.io as a former altcoin platform, while current third-party profiles report that the brand and services were integrated into Paymium. Because an exact integration or shutdown date was not recovered, HEI uses inactive status and leaves death_date and death_reason null rather than forcing merged or rebranded.
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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