Is signing really free?

Yes. Create, invite, sign, and print free. Optional permanent proof costs 1 credit. On-chain signature and field backup costs extra. No subscription.

How does private signing work?

Your browser creates a fingerprint of the file. Share the file and an invite link with each signer. The file never uploads to VeriLock. Add a public proof later if you need it.

Do you store my document?

No. We store the fingerprint and agreement metadata. Each person keeps their own file. Optional on-chain backup makes signature and field data public, but never includes the document.

What does a blockchain lock add?

Free signing keeps the agreement record on VeriLock servers. A lock adds permanent public proof on Nimiq for 1 credit, so the file can be checked independently.

Do invitees need a subscription?

No. They open the invite, choose the shared file, fill their fields, and sign free. There are no monthly or per-person signing fees.

VeriLock provides free document signing and an optional proof you can lock for later checks, all without file uploads.

Multi-party document signing. Free.

How to sign a document privately without uploading

Works with PDF or image files. The document stays on each party's device from start to finish.

Choose your file. Drop the document in your browser. VeriLock makes a short digital fingerprint on your device; your file never uploads.
Invite and sign. Share a link. Each co-signer matches the same file and signs with a wallet. Multi-party signing is free.
Print or lock. Print the signed copy at no cost, or optionally lock a permanent proof (1 credit).

How to verify a signed document without uploading

Check whether your PDF or image matches a VeriLock proof. Re-checking runs in the browser; file bytes never upload. No wallet required for a basic check.

Choose the file to check. Drop your copy of the document in the browser. VeriLock makes a short digital fingerprint on your device; your file never uploads for the integrity check. You can verify a file here.
Check the saved proof. Compare the fingerprint to a locked agreement via invite link, lookup, or My agreements. No wallet is required for a basic verification.
Read the result. A match means your file has the same bytes as the locked fingerprint - not that VeriLock stores the document. Mismatch means the copy differs from what was locked.

How can I sign documents free online safely?

Make a fingerprint of your file in the browser so it never uploads. Invite co-signers with a link; each party matches the same bytes and signs. An optional wallet shows who signed. Free multi-party signing stays on your device - lock a proof later only if you need permanent public proof.

Free document signing FAQ

Is document signing really free on VeriLock?

Yes. Multi-party document signing is free: create an agreement, invite co-signers, collect signatures, and print the signed copy. Credits are only for optional paid steps - locking a permanent public proof (1 credit), or storing signed fields. No subscription is required to sign.

How can I sign documents free online safely?

Make a fingerprint of your file in the browser so it never uploads. Share a link; each person signs the same file. You can lock a public proof later if you want proof anyone can check.

Do I need to upload my document to sign free?

No. VeriLock makes a short digital fingerprint on your device. Servers keep agreement metadata and that short proof string - never your document bytes. Each party holds their own copy of the file from start to finish.

What is free signing versus locking?

Free covers create, invite, sign, and print. Locking saves a permanent public proof for 1 credit. You can also pay extra to store the signed fields. Signing is always free.

Can co-signers sign documents free without a subscription?

Yes. Invitees open the link, drop the shared file, complete fields, and sign at no cost. There is no per-seat fee and no monthly plan for free multi-party signing. Credits are only for an optional lock or storing signed fields.

Standards & references

W3C Web Cryptography API - browser crypto for local SHA-256 fingerprinting
W3C XML Signature Syntax and Processing - industry digital signature model for integrity and signer binding
Nimiq Developer Center - Nimiq wallet identity and on-chain transaction documentation
NIST FIPS 180-4 (SHA-256) - hash algorithm used for document fingerprints

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