Invoice & bank account
Before you transfer, you know: does this account really belong to your supplier? Every change must be approved first.
Trust for everyone
Whoever you trust with your money, goods or authority – know it for real.
Check people, companies, bank accounts, authorizations and documents before you let go. Confirmed in seconds, secured like banking standard. The first 50 checks per month are free. Private or business – both get the same.
Made in Germany · GDPR-compliant · NIS2-ready
Private or business
Both get
the same.
Whether you're handing over an apartment or onboarding suppliers: the same Trust Layer, the same Audit IDs, the same security. Start private — and keep using it all the way to enterprise workflows.
Compliance & hosting
What you can use today
Six ways to be safer.
One proof per action.
Invoices, suppliers, authorizations, product codes, documents, API audit – all under one roof.
Check suppliers
Company, role, signing authority – all checked against the register. A real membership instead of an Excel list.
Give authorization
Who's allowed to do what, from when, until when. Time-bound, revocable any time – with proof.
Keep products real
QR or NFC – one scan tells you: real product, right batch. Counterfeits stand out instantly.
Prove documents
Skip the PDF stacks – just a fingerprint. Counts as proof. Delete the PDFs.
API & audit trail
Webhooks, SDKs, audit export for your ERP, WMS or DMS. Plug-and-play for devs.
What you can do today
Three workflows,
three audit trails.
Every one of these workflows is live today. No contract, no phone call — just the Trust App and a browser tab.
IBAN protection
A changed IBAN never gets silent approval.
Trust App signature instead of SMS TAN. One audit ID per transaction. Whoever pays knows why — and to whom.
Supplier verification
New suppliers verified in 3 minutes, not 3 days.
Persons, companies, IBANs, authorizations — all in one path with proof. Onboarding without mail ping-pong.
Authorization audit
Who can act for whom — auditable at any time.
Handover with trust level, four-eyes principle, audit trail. Authorizations don't fade away in mailboxes — they become provable.
For every company size
One Trust Layer, three ways to use it.
Small businesses protect liquidity.
Bookkeeping and the owner decide together – no IT department needed. Trust App on the phone is enough.
Secure bank-account changes
Every new IBAN at a known supplier ends up in the Trust App – not silently in the banking interface.
View IBAN protectionAuthorize representation
Time-bounded authorization for tax advisors or co-owners – with audit evidence.
View authorizationsVerify invoices
Hash-based Document Proof instead of PDF stacks. Metadata is enough, PDFs may go.
View Document ProofWhat it looks like in real life
Real workflows. Not marketing slides.
Finance
“12 IBAN changes per month, each one approved in the Trust App. Audit-ID stays with the action – auditors love it.”
Example scenario · Finance team, mid-sized construction company
- IBAN approvals via Trust App
- 12 / month
- silent API approvals
- 0
Example scenarios from the finished module. We're just getting started – be there when the first trust stories happen.
How a check works.
Four steps. Proof at the end.
Get going
Start an action – invoice, supplier or authorization. Right from the console.
Send Challenge
SigID creates a request with the actual data – amount, bank account or role. Tamper-proof.
Confirm in the Trust App
With fingerprint or Face ID. You see what you confirm – rejecting is just as quick.
Keep the proof
You get an Audit-ID. Black on white, verifiable any time – even five years later.
For you. For your team. For anyone who wants to verify.
Pick where SigID can help today.
Frequent questions
Answers in 30 seconds.
Anything missing? Sales replies on weekdays within one business day.
What is a Trust Layer, really?
A Trust Layer checks – before you let go. People, companies, bank accounts, documents, authorizations, product codes. SigID does it in seconds and gives you proof in black on white. For critical actions you confirm in the Trust App – secured like banking standard.What is an Audit-ID?
Your digital proof. A unique, unchangeable number for every approved action – like an IBAN release. Stays with the action, can be checked any time, by anyone – auditor, lawyer or examiner.How secure are passkeys in SigID?
Fingerprint or Face ID instead of a password. Your key never leaves the device – phishing and stolen passwords are out. Standard FIDO2 and WebAuthn, the same tech your bank uses.How much does SigID cost?
After login: 0 euros. The first 50 checks per month are free – private or business, no plan selection. From check 51 you pay per action – no setup, no minimum contract, no seat fee.Which connectors are available?
Webhooks and SDKs for TypeScript, Python and Go. Native ERP connectors for SAP, DATEV and Lexware are on the roadmap. Custom integrations build against the OpenAPI 3.1 spec.Do I need special hardware?
No. The Trust App runs on common smartphones (iOS and Android) with passkey support. Optionally you can add hardware tokens (FIDO2 USB/NFC) as a second trust source.How fast am I up and running?
Account in 60 seconds, first check in under 5 minutes. No credit card – every account gets 50 free checks per month right after login.
Today is a good day to start.
50 checks per month free. Pay-per-check from transaction 51. Dedicated EU tenants on request.
- DSGVO-konform
- eIDAS-bereit
- Made in Germany