Carbon-market infrastructure
The infrastructure layer for trustworthy carbon markets.
The exchange, and the proof beneath it.
Hygenox Holdings builds and operates the companies that make carbon markets worth trusting — a place to trade a credit, and a way to prove what was traded.
Where carbon is bought, sold and retired.
The record beneath the trade — checkable years later.
The group
A market is only as good as the proof underneath it.
Hygenox Holdings is the parent company for a focused cluster of carbon-market infrastructure. Most of the industry sells one half of the problem — a place to trade, or a way to verify. We hold both layers under one roof: the exchange where credits move, and the cryptographic record that makes each one checkable long after the transaction closes.
It is operator-led and built to last — run from the same desk where the decisions get made, not handed down through a chain of advisers.
The companies
Two companies. One stack.
Neutrality
Carbon credit exchange
The venue where carbon is bought, sold and retired — built so a credit can move without losing its provenance.
Visit neutralitys.com → The proofSigillum
Cryptographic proof for high-stakes records
The attestation layer beneath the market — turning a claim into something anyone can verify, years after it was made.
Operated by Hygenox Markets Ltd, trading as Sigillum. Visit sigillums.com →Contact
Talk to the holding company.
No forms, no funnels. One email reaches the people who run it, and you'll get a straight answer on whether we can help.
hello@hygenox.com