Netherlands Tax Administration (Belastingdienst)
VAT that can be verified at the moment of payment.
Innovation Award · Dutch Ministry of FinanceWork together on data
Work together on data
you cannot hand over.
Privacy-preserving data exchange: the record stays with its holder, only the field or answer travels, and every exchange can be proven afterwards.
Encrypted under keys you control.
50M+transactions per day on the public log underneath, proven in a 2023 world record
zerocentral databases to trust
How it connects
Build a data ecosystem.
Your systems keep doing their job. mintBlue runs next to them and sends only the fields others are entitled to, with proof of every exchange.
- 01
A connector in your own environment
It runs next to your databases, picks up the changes you choose to share and signs them at the source.
- 02
An event stream between organisations
Encrypted for whoever is entitled to them, changes travel peer-to-peer, with no broker or hub you have to trust.
- 03
Certainty for every decision
Each party decides on verified facts from the source, and faster. The tamper-evident audit trail shows afterwards who shared what, with whom and on whose mandate.
Privacy-enhancing technologies (PET), in three layers.
Start with selective disclosure, then add the auditor's view and matching across organisations.
01
Selective disclosure
Share only what is needed. Encrypted under keys you control, each department or organisation opens only the facts it is entitled to, such as a yes or a no.
- Encryption under your keys
- Access per recipient
- Signed requests
- Mandates
02
Audit trail
Give auditors and supervisors their own view: audit-only access to the trail, in real time, without access to the data itself.
- Signed events
- Tamper-evident audit trail
- Audit-only access
- Real-time supervisor access
03
Matching across organisations
Learn whether another organisation holds a record on the same subject, without either side handing it over.
- Blinded tokens (OPRF)
- Can feed an MPC platform with new events
Where one organisation decides on another's data.
Built in Europe, for Europe
Data sovereignty, under European law.
mintBlue is built on an open, royalty-free protocol that anyone can implement, so no organisation depends on us to read its own records.
Most of the Western world's data sits on American infrastructure, within reach of the CLOUD Act. With mintBlue your systems and keys can stay with you, and we are a European company with no parent company outside Europe.
Next step
Start with one exchange.
Tell us what has to be proven, to whom, and what may not leave your organisation. We show which privacy layer each exchange needs.
Next step
Start with one exchange.
Tell us what has to be proven, to whom, and what may not leave your organisation. We show which privacy layer each exchange needs.