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named for water. built like fire.

we build cryptographic infrastructure that returns privacy, value, and control to people and local communities.

the name

su in Turkish: water. fluid, patient, foundational. finds every path. erodes every obstacle. precondition of life.

su in Basque: fire. elemental. dangerous when uncontrolled. essential when harnessed.

two opposites held in one syllable. precision and fluidity. security and openness. technical depth and human purpose. the engine behind every product we ship.

the studio

a deep-tech product studio in Bilbao. we design, build, and ship software at the intersection of cryptography, self-sovereign identity, AI, and modern engineering. four products in parallel, all built to production quality from day one. when a product reaches scale it spins out and stands on its own.

the team

two co-founders. decades of combined experience across blockchain, cryptography, self-sovereign identity, and AI. hundreds of production systems shipped at scale before founding the studio.

studio work · 03

alongside our own products, we take on a small number of external engagements per year. three modes, one engagement at a time.

mode / I2 — 6 weeks

consulting

cryptographic correctness review, SSI / VC system design, AI infrastructure audit. fixed scope, written deliverable.

mode / II1 — 6 months

engineering

prototype to production. cryptographic primitives, on-prem RAG, identity wallets. scoped milestones, our engineers ship it.

mode / III6+ months

embedded

fractional CTO, long-term technical partnership. architecture, hiring, ongoing review. one engagement at a time.

for · startups · enterprises · public sector
products · 04
SU001Self-Sovereign Identity2026

openKYC

The "Login with Google" of identity verification — except the user holds the credential and no platform controls the rails. Verify once. Carry the proof. Reuse it everywhere. The user is paid every time the credential is presented.

problem Global KYC and AML spend runs €206B per year. Users upload the same documents to dozens of platforms. Thirty per cent abandon onboarding at the KYC step. None of the value created by being verified returns to the person being verified.

solution A mobile wallet issues DID-based Verifiable Credentials from trusted KYC providers. Partner sites receive a cryptographic proof, not the underlying data. Nothing leaves the device. No central database to breach.

openkyc.org
SU002AI Sales Tooling2026

A ojo

Pre-priced quoting for service businesses. An embeddable widget gives buyers an instant ballpark and routes qualified, pre-priced leads to the provider — replacing the contact-form-and-WhatsApp guesswork that loses both sides time and money.

problem Service businesses run their pipeline through plain forms, WhatsApp threads, and email. Buyers abandon when they can't see likely cost. Providers spend hours qualifying low-intent leads. The website never converts the traffic it gets.

solution The provider describes the business; an LLM bootstraps the service list, pricing logic, question flow, and widget copy. All editable. One snippet to embed. Form or chat mode. Leads delivered by email or WhatsApp.

aojo.es
SU003Tax & Legal AI2026

Adimen

A closed-circuit, on-premises AI that knows the firm's clients and the tax law by heart. Adimen ingests every document a firm holds to build a private per-client memory, ingests the tax law of the firm's jurisdiction to build a citable legal memory, and uses both to prepare filings — every field traceable to either a source document or a specific article of law.

problem Spanish tax layers a state baseline over autonomic and foral regimes. Generic LLMs hallucinate citations and miss the hierarchy. Manual research is slow. Firms cannot legally send client documents to a public model.

solution Two layers split along the natural seam. Adimen Corpus is a hosted, citation-grounded retrieval service over scraped tax law, exposed over MCP. Adimen Praxis runs on-premises — client documents and case reasoning never cross the boundary. A law gateway sends only abstracted, PII-free legal queries outbound. Beachhead form family: inheritance and gift tax. Architecture is form- and jurisdiction-independent.

adimen.app
SU004Rental Screening2026

Aterpe

Rental applicant screening for individual landlords in Spain. Paste a listing URL; get a shareable widget that collects structured applicant information, scores each applicant 0–100 for compatibility, and ranks them on a dashboard. Talk only to the renters worth talking to.

problem Idealista and Fotocasa flood landlords with unqualified inbound. Listing platforms optimise volume, not signal. Each inquiry costs minutes of back-and-forth and most go nowhere. Renters lose hours to platforms that never reply.

solution Paste a listing URL. An LLM bootstraps the question flow from the listing plus the landlord's preference profile. One link to share. Each applicant gets a 0–100 compatibility score, a red-flag list, and a dashboard rank. Long-term and short-term modes. Live in under thirty seconds on the happy path.

aterpe.app
what we are not

not a marketing company, a no-code platform, or a growth-hacking agency.

contact
hello@su.engineering
Bilbao · Bizkaia · Basque Country