Short answer
By measuring your real emissions at the source (sensor, meter, API) continuously, then sealing each data point with a SHA-256 hash, eIDAS-timestamped and anchored on Hedera. You give your EU importer verifiable technical proof instead of the Commission's default values.
How do I prove my real CBAM emissions without falling back on default values?
By measuring your real emissions at the source (sensor, meter, API) continuously, then sealing each data point with a SHA-256 hash, eIDAS-timestamped and anchored on Hedera. You give your EU importer verifiable technical proof instead of the Commission's default values.
Will my CBAM data hold up to an EU Commission check?
Continuous measurement at the source is timestamped and anchored: integrity and anteriority are verifiable by a third party, without relying on your declaration. It is a technical evidence element that supports your quarterly declaration — not a self-reported claim.
How much does sealing one emission data point cost?
€0.20 per seal, eIDAS timestamping included, no mandatory subscription. The CBAM Proof offer is €2,000/month for continuous measurement of one import perimeter.
At what cadence is my carbon intensity measured?
Continuously, at a 15-minute cadence, with a verdict computed on a rolling 24-hour window to neutralize momentary spikes. The measured intensity reflects your real production, not a snapshot.
Is the proof timestamped and verifiable by an independent third party?
Yes. Every hash is eIDAS-timestamped (RFC 3161, qualified provider) and anchored on Hedera. A third party can recompute the hash and verify the history, with no account and no access to your infrastructure.
How much can I save by leaving the EU default values?
The Commission's default values are deliberately punitive to encourage real measurement. The gap depends on your effective carbon intensity: sealed real measurement keeps you from declaring a figure above your reality.