Protosonic Europe brand artwork
Protosonic EuropeEvidence infrastructure · Tallinn
Protosonic
Europe

Patent-pending technology that makes records hard to fake and easy to check.

We build the Cosmic Time Stamp stack — offline-verifiable evidence for when and where something was committed — and ship it into products like OpenStamps for furniture EUDR. No marketing seals of “genuine.” Arithmetic that survives an auditor.

Patent pending US provisional filings covering Cosmic Time Stamp (CSTP) and Sky-as-a-Signal technologies — owned by Protosonic OÜ.
Patent pendingUS provisionals filed
Offline-firstVerify without an account
EstoniaEU company · Tallinn

02 — Intellectual property

Patent-pending technologies.

We file for what we invent. Two US provisional applications anchor the stack below — patent pending, owned by Protosonic OÜ.

Patent pending

Cosmic Time Stamp (CSTP)

Committed evidentiary artefacts with a three-outcome grammar — refuted, not-refuted, not-checked — proof entries, anchor policy, and offline readers designed for decades of durability.

US provisional 64/125,042
Patent pending

Sky as a Signal

Ephemeris-conditioned attestation and sky-consistency limbs — celestial infrastructure for time and place claims that belong in evidence systems, not marketing astrology.

US provisional 64/092,378

Doctrine we will not break: green never means “genuine.” Ephemeris supports consistency; unpredictable anchors carry not-before force. OpenStamps sells the evidence layer — operators still own their filings.

03 — Studio

Independent. Technical. Built to be checked.

Protosonic OÜ is a privately held Estonian company. We invent the formats, ship the products, and keep the doctrine tight — so a mill in the forest and an auditor in Brussels can disagree with the same bytes.

Small team, serious IP, products that have to survive hostile readers. That is the point.

Approach
Invent, file, ship — in that order.
Proof
Offline readers. Public attack surface.
Standard
Refutation over greenwashing.

04 — Contact

Let’s talk.

Partnerships, pilots, licensing, and procurement KYC — we reply personally.

Company
Protosonic OÜ · reg. 16344167 · VAT EE103014252
Registered office
Ruunaoja tn 3, Lasnamäe
Tallinn, Harju 11415
Estonia
Registry
Extract available on request for procurement KYC