Signed at the source

Most environmental data is taken on faith. Ours is measured.

Mālama builds hardware-signed sensing for carbon project developers, and audit-grade data for the buyers, registries, and regulators who have to trust the numbers behind it.

51,466
Signed readings, cumulative
26 mo
Continuous, zero gap months
Mainnet
Anchored on Cardano
Mālama sensor hub deployed in a working taro field, Hawaiʻi
The problem

The data everyone relies on can be gamed.

Estimated, not measured

Baselines and emissions are modeled from averages and assumptions, not measured in the field.

Self-reported

Organizations grade their own homework on spreadsheets and certificates, with limited independent proof behind the numbers.

Audited once a year

A person visits the site annually, if at all. The other days are taken on trust.

Editable after the fact

Figures can be adjusted downstream, with no record of what the sensor actually saw.

Independent reviews have repeatedly found gaps between claimed and delivered carbon reductions. Reported energy use at AI data centers is coming under similar scrutiny, and new disclosure rules in California and the EU are raising the legal cost of claims that cannot be verified. This is the problem Mālama exists to fix.

From sensor to proof, in four steps.

01

Measure and sign

A sensor takes the reading and a secure chip signs it on the spot, before the data ever leaves the device.

02

Verify at the edge

The signed reading is checked against cryptographic, physical, spatial, and timing rules, with anomaly detection flagging anything implausible.

03

Independent verification

A separate network of verifiers cross-checks the reading and confirms it before it is recorded.

04

Anchor as proof

The confirmed reading becomes a permanent record on Cardano: a carbon SaveCard, or a verifiable energy-use disclosure record.

This is the same signing architecture running continuously since June 2024. Carbon measurement is live today. Data-center energy monitoring is in pilot development for 2026.

Evidence

Not a concept. Already running.

51,466
Hardware-signed records
26 mo
Continuous, zero gap months
Jun 2024
First signed reading
Mainnet
Cardano, not a testnet

Pilot Node #1, in Dallas, Texas, has signed environmental readings continuously since June 2024, anchored to Cardano mainnet. The same architecture now extends to data-center energy monitoring.

Mālama sensor hub and soil probe deployed in a taro field

Built to map onto the standards you already use.

Standard What a Mālama record provides Current status
Verra VM0042 Hardware-signed field measurements as supporting evidence Supporting, not primary
Gold Standard dMRV pilot programme submission-ready records In pilot, Oct 2026
Puro.earth Registry-compatible signed data, anchored via CIP-68 Compatible
Isometric v1.2 Continuous measurement as supporting-tier evidence Supporting tier

Continuous sensor data is currently a supporting input, not a substitute for registry-required primary quantification, under current protocol versions. We're working directly with registries to change that as the technology matures.

Two ways to work with us.

If you run a carbon project

For project developers

Move from a once-a-year audit to a continuous, signed record. Deploy sensors on site. Readings are signed and anchored automatically, building a complete record you can hand to your verifier or registry.

Developers report typical annual verification costs of $20,000 to $50,000 or more using manual audits. Continuous signed sensing is designed to reduce that overhead as sensor density increases on a site. These are targets, not realized figures.

Talk to our team about a pilot
If you need data you can defend

For data buyers and registries

License hardware-signed datasets by API. Define the location and sensor type, fund the request, and receive signed, audit-ready data into your own systems, whether that's a registry filing, a disclosure report, or an underwriting model.

 

Request access

What's live, and what's not yet.

Live

Carbon measurement, hardware-signed, anchored to Cardano mainnet, running continuously since June 2024.

In pilot

Rack-level data-center energy monitoring, first pilots scheduled for 2026.

Exploratory

Supply-chain provenance, parametric insurance, precision agriculture, and other physical-world data markets that could run on the same signing architecture. Not yet built.