Attest vs Signaturit

Signaturit today: part of Namirial

Signaturit, with offices in Barcelona, Paterna (Valencia) and near Paris, belongs to the Namirial group: Namirial says it acquired Signaturit Group on July 1, 2025, and Signaturit's website now reads "Signaturit Group is becoming Namirial". On December 1, 2025, Signaturit Solutions merged into the group company Ivnosys, which now provides the qualified trust services behind the platform; Validated ID, Universign and Vialink are in the same group. Its information security management system is certified to ISO 27001.

Attest is built around a different promise: proof anyone can check, on documents only the parties can read. Signaturit's prices below are as published on October 12, 2026, excluding VAT; its other details are as published on its own pages and terms on October 11, 2026.

	Attest	Signaturit (as published October 12, 2026)
Who can read your documents	Only you and the people you send them to. Every document is end-to-end encrypted in your browser	By its terms, "the document is encrypted and sealed once the signing process has been completed", with the provider's qualified seal
How a signer signs	Approves with a passkey only they control (Face ID, Touch ID, Windows Hello or the device PIN)	Opens a link, with no account; SMS codes, biometric handwritten signatures, ID photos or certificates, depending on the level
What seals the signed copy	Each signer's own signature, plus a public blockchain anchor	The provider's qualified electronic seal (on the document where applicable) and an official timestamp
Years later	The verifier inside the copy checks it, with nothing to renew	In a 2021 help article, Signaturit said downloaded documents' "validity won't last forever, as certificates must be updated"; its pricing page now cites a qualified preservation service
Prove a fact without the document	Yes: a zero-knowledge proof that you signed, and the date it was completed	Not offered
Free	2 documents, in total	14-day trial
Entry paid plan	Signing: $5 a month for 20 documents	Personal: €10 a month, or €108 a year (€9 a month), 1 user and 5 transactions

What the signature level changes in Spain

This is general information, not legal advice. Under eIDAS, no electronic signature can be refused as evidence just because it is electronic or not qualified, and Spanish contract law lets most contracts take any form. The level matters when a signature is challenged. Under Ley 6/2020, art. 3, and the Ley de Enjuiciamiento Civil, art. 326:

• Simple or advanced signature challenged: the party relying on it proves authenticity and integrity, with expert comparison or any other useful evidence (art. 326.3).
• Qualified trust service, on the trusted list at the time: the challenged feature is presumed present, and the challenger bears the burden of the check, and its costs only if the check comes out against them, with a possible fine for a reckless challenge (art. 326.4).

Some acts need a notary or another special form whatever the signature: registering real estate, gifts of real estate, marital property agreements and wills, for example. Attest signatures are electronic signatures, the base eIDAS level, recognized for most agreements, and their strength in a dispute is the evidence each one carries: the signer's own passkey signature over the exact document, the audit trail and a public blockchain anchor.

Privacy: who can read your contracts

Signaturit says it applies "data encryption, complete audit trail with timestamp, strong authentication, and eIDAS-compliant digital certificates", and its sub-processor list places the platform's storage on servers in Ireland. Its terms describe encryption that the provider itself applies at the end of signing, and its help center says biometric signature data can be released on "a judicial requirement/order or ... a sufficiently relevant reason that allows the decryption of the biometric information". Signaturit describes no end-to-end encryption, so its systems can decrypt what they store.

Attest encrypts every document in your browser before upload, with AES-256-GCM, and locks its key separately to each party's own key; what signers type into the document is encrypted in their browser too. Attest stores your document only as ciphertext it can't read. We compared 21 e-signature services in October 2026, Attest and 20 others, and Attest was the only one that end-to-end encrypts every document, for every signer, by default.

How signers sign

Signaturit signers need no account: they "receive a secure link by email and can sign directly from their browser". Depending on the level, the sender can add an SMS code, a biometric handwritten signature, attached ID files or a selfie with OCR. An advanced signature comes with identification and "a certificate valid for 3 years"; a qualified signature uses secure remote identification, "a certificate valid for 5 years" and two-factor authentication.

On Attest, every signer approves with a passkey: a cryptographic key only the signer controls, unlocked with Face ID, Touch ID, Windows Hello or the device PIN. The passkey signs a statement naming the exact document, by its fingerprint, and everything the signer entered, and Attest checks it against the passkey's public key before recording it.

Proof that keeps working

Signaturit seals the document and its audit trail, which records the transaction ID, the signer's name and email, IP address, geolocation, authentication history and an "Official time stamp", with the provider's qualified seal. If Adobe Reader reports that credentials aren't valid, its help center tells users to load trusted certificates from Adobe's and the EU's trusted lists. On long-term validity, a 2021 help article said downloaded documents' "validity won't last forever, as certificates must be updated", and recommended downloading them again from Signaturit for lawsuits; its pricing page now cites "Long-term validity of signatures thanks to our qualified preservation service".

An Attest signed copy needs no re-download. Every party gets the same sealed PDF: the signed pages, with a "Signed with Attest" stamp on each signature and a seal line at the foot of every page, a certificate of completion, the audit trail up to completion and a "Verify it yourself, without us" page, with the full evidence, the original document and a standalone verifier attached inside. Its proof rests on each signer's passkey signature and Attest's anchor on the Horizen public blockchain, not on a certificate that expires. Drop the PDF on the verifier in any browser, years from now, even without Attest: it checks the original document against what every signer signed, each signature and entries, the anchor, and that nothing was added after sealing, and it re-makes every page you see from what was signed and compares the result byte for byte.

Each signer can also share a zero-knowledge proof that they signed an agreement, and the date it was completed, without revealing the document. Each proof is verified on zkVerify. Signaturit doesn't offer this.

Price

Attest's price is in US dollars: at the European Central Bank's reference rate of October 9, 2026 ($1.1206 per euro), $5 is about €4.46.

	Attest	Signaturit (October 12, 2026, excluding VAT)
Free	2 documents, in total	14-day trial
A few a month	$5 a month for up to 20	Personal: €10 a month, or €9 a month billed yearly, for 5 transactions
20 a month	$5 a month (about €4.46)	Business+ (unlimited transactions): €45 per user a month, or €38 per user a month billed yearly

A Signaturit transaction can carry up to 20 documents and 50 signatures, so one transaction can cover what Attest counts as several documents. As published on October 12, 2026, excluding VAT, Business (€29 per user a month, or €23 per user a month billed yearly) includes 10 transactions per user. On Business and Business+, an advanced signature costs €2.50 and a qualified one €10 to €15, excluding VAT, as published on October 12, 2026. Attest's plans are month to month, and you can cancel any time.

When Signaturit is the better fit

• You need advanced or qualified signatures, or the Spanish presumption of art. 326.4 for qualified trust services.
• You need identity verification: remote video identification and the issuing of qualified certificates are part of the group's offer.
• You need long-term preservation: the group sells a qualified preservation service.
• You run campaigns or templates: transaction templates and signer attachments on Business, signature campaigns of up to 1,000 transactions and bulk signing on Business+, and integrations with Zapier, Google Docs, SAP and Lucca.
• You want a European group of qualified trust service providers behind your signatures.

Who should choose Attest

• Teams with confidential agreements who want no provider able to read them: every Attest document is end-to-end encrypted in the browser.
• Anyone who wants a copy that proves itself for years, with nothing to update or download again.
• Ordinary business agreements where an electronic signature with strong evidence is enough.
• Small senders: 20 documents a month for $5.

Starting on Attest

Sign in with your email, set up your signing key with a passkey and a recovery phrase, upload a PDF of up to 8 MB, add your signers and place their fields. Your first 2 documents are free, in total.