Anyone can imitate your documents. No one can imitate your proof.
TrustIDX anchors your documents' fingerprint on two public ledgers, Base (an Ethereum layer 2) and Bitcoin.
- Your documents stay with you: only their fingerprint is anchored
- A 100% web application: nothing to install, nothing to configure
- Public and free verification, forever
- The proof stands even without TrustIDX: the ledgers are public
- A Swiss service, with no token and no speculation
Coming soon
In the AI era, any document can be imitated, forged or backdated.
Contracts, diplomas, certificates, reports, invoices, but also photos, videos or audio files: the tools to produce convincing fakes have never been this accessible. The question is no longer whether a document looks genuine, but whether you can prove it. TrustIDX establishes that proof: the document's integrity, its date, and the domain it comes from.
A public, permanent proof.
The fingerprint
The fingerprint is the exact signature computed from the content of any file. It is unique and, in practice, impossible to imitate.
The anchoring
Anchoring is the timestamped recording of the fingerprint on the public ledgers (blockchains) Base, a layer 2 built on Ethereum, and Bitcoin. Once recorded, it cannot be tampered with.
The verification
Anyone can verify, freely and forever, that a document is authentic, dated, and was certified from the issuing organisation's proven domain.
A proof that does not depend on us.
The ledgers on which TrustIDX records your fingerprints are public: nobody controls them, nobody can rewrite them. What is certified today will remain verifiable tomorrow, with or without TrustIDX.
Two independent ledgers
Both ledgers attest the fingerprint's existence at a date. Base additionally carries the provenance: your organisation's proven domain. Two distinct records that do not depend on each other.
Verifiable with public tooling
The records can be read with each ledger's public tooling: Ethereum Attestation Service for Base, OpenTimestamps for Bitcoin. No proprietary tool is required.
A Swiss service
TrustIDX is designed and operated in Fribourg, Switzerland.
Your documents stay with you. Always.
Your document's fingerprint is recorded on the public ledgers; the details your organisation chooses to record, field by field, are recorded on the Base blockchain. The file and its content do not leave your organisation.
What is a digital fingerprint?
A fingerprint (or hash) is a unique, fixed-length code computed from your file, much like a human fingerprint. Change a single comma or pixel, and the fingerprint becomes completely different. The document cannot be reconstructed from its fingerprint: the computation only works one way. And in practice, two different files cannot produce the same fingerprint. In short: the fingerprint proves your document's integrity, yet reveals nothing of its content.
The fingerprint is enough
No access to the source file is needed to certify it: holding its fingerprint is enough, along with any associated metadata. The one who certifies is not necessarily the one who holds the document, provided they have the right to do so.
Your file is never sent to us
The fingerprint is computed directly in your browser. The document itself is never uploaded: it passes through neither our servers nor the blockchain.
Your metadata belongs to you
You freely choose the metadata associated with a document. By default it is not published: only its fingerprint is anchored, which proves its integrity without exposing anything. Your organisation may record some of it in clear, field by field, permanently; the signatory never is.
One single prerequisite: your domain name.
Your domain name carries the provenance of your documents. It is what is recorded with every certified document, publicly and unambiguously. If your organisation controls a domain name, it is ready to certify.
- Nothing to install, no infrastructure to deploy
- The proof is established once and does not need renewing
Distinct plans, one and the same proof.
Plans differ by volume, seats and features, never by the proof: every certified document receives the same dual anchoring and the same public, free, permanent verification.
| EssentielTo start certifying | BusinessFor organisations certifying at volume | InfinityTo integrate certification into your systems | |
|---|---|---|---|
| Volume and capacity | |||
| Documents per year | To be determined | To be determined | To be determined |
| Seats | To be determined | To be determined | Bespoke |
| Simultaneous certifications | To be determined | To be determined | To be determined |
| Core features | |||
| Certification by file or by fingerprint | |||
| Batch certification (CSV) | |||
| PDF certificate of authenticity | |||
| Metadata attached to documents | |||
| Revocation and correction by re-issue | |||
| Dual anchoring: Base and Bitcoin | |||
| Two-factor authentication (2FA) | |||
| Ticket-based support | |||
| Advanced features | |||
| Filing folders | |||
| Personalised verification page | |||
| Machine-to-machine API and webhooks | |||
| SSO and directory provisioning (SCIM) | |||
| Multiple proven domains | |||
The volumes and features of each subscription are still to be determined. Final pricing will be published at launch; beyond the included volume, a tapering top-up is available.
The strength of blockchain. Without the speculation.
TrustIDX is not a crypto project. We use the blockchain for what it does best: a public ledger that nobody can rewrite, and that TrustIDX does not control. And for nothing else.
No token
No cryptocurrency tied to TrustIDX, no cryptocurrency to buy or hold.
No wallet
No crypto wallet to install, nothing to manage.
No speculation
Nothing to stake, nothing to win, nothing to lose. Only the proof matters.
Two ledgers, a marginal energy cost.
The word ‘blockchain’ brings mining and its electricity consumption to mind. The question is legitimate. The answer comes down to two facts: on Bitcoin, TrustIDX adds no transaction at all; on Base, the share of one certified document counts in fractions of a watt-hour.
On Bitcoin: no transaction added
Fingerprints join a public aggregation tree (OpenTimestamps) whose root is recorded on Bitcoin regardless: a single transaction for thousands of fingerprints from around the world. A thousand or a million documents: not one more transaction, not a penny paid to mining. Bitcoin's consumption depends on mining, not on our use: it would be identical without TrustIDX.
On Base: no mining, fractions of a watt-hour
Base is built on Ethereum, which has run on proof of stake since 2022: no mining, no computing race. The entire Ethereum network draws 0.9 MW continuously, the power of nine thousand 100 W light bulbs, more than ten thousand times less than Bitcoin (Cambridge, June 2026). Spread over the transactions it settles, layer 2s included (L2BEAT, September 2026), its consumption amounts, for one certified document, to an LED bulb switched on for a few seconds.
Interested? Need more information?
A question about certification, plans or integration: write to us.