Tsubacheck
ESENCAPT Contact

Integrate

The same engine, inside your product.

The Tsubacheck identity verification API is in early access. Our own products already use it; now we are opening it to a small group of platforms.

POST /v1/evidence 201
{
  "id": "evd_7Xk2Q9",
  "action": "payment.authorize",
  "identity": { "liveness": "passed", "document": "matched" },
  "presence": { "lat": 42.5063, "lng": 1.5218, "signals": 4 },
  "time":     { "source": "external", "at": "2026-10-26T09:41:07Z" },
  "integrity":{ "anchor": "0x7af3…e8b1c904", "report": "pades-lta" }
}
Illustrative example. The final API contract is shared during early access.

01 What you can integrate

  • Onboarding

    Verify a new customer against their document, with liveness detection, before opening their account.

  • Signature

    Bind the signature of a document to a verified person, with date, place and document hash.

  • Authorisation

    Ask for biometric confirmation before a payment, an access or a sensitive operation.

  • Consent

    Record who accepted which terms, when and from where, with chain of custody.

  • Presence

    Prove that a person was in a place at a given moment, without continuous tracking.

02 How we start

  1. 01

    You walk us through the flow

    Which action has to be proven and to whom: an auditor, a regulator, a judge or your own risk team.

  2. 02

    We choose the layers

    Identity, presence, time and integrity. Not every flow needs all four.

  3. 03

    Test integration

    You connect your platform via API or use the white label interface, in a test environment.

  4. 04

    Production

    Every verification returns a record and a signed report that you can store or hand over.

03 Early access

Request API access.

Tell us what platform you have and which action you want to verify. We will suggest a call to understand the case.