Send it. Get it signed. Keep the proof.
Send an agreement, have it signed on a phone or a computer, and keep a record of exactly what was signed — sealed, so any later change to it can be detected.
3 documents a month, free. No card.
What getting a document signed looks like.
- Upload, place, send
- Upload a document or reuse a template, mark where each person signs — or let CoreSign suggest the places from the document’s own text — and send it for signature.
- Signers never need an account
- The people you send to never sign up and never pay. They open their own link, read the document, and sign — or decline.
- Proof of exactly what was signed
- When signing completes, the document is sealed with a cryptographic signature that covers the document itself, so any later change to it can be detected. How the seal works
Were you asked to sign something?
If an email brought you here, you are in the right place. Here is what CoreSign is, who is asking, and how to tell a genuine request from a fake one.
How it works
Four steps, and the last one is the point.
- 01
Prepare
Upload a document or reuse a template. Draw the boxes where each signature, initial and date belongs, and any question a signer answers, such as their title — or have CoreSign suggest them from the document’s own text.
- 02
Send
Each signer gets their own link, one at a time in the order you set. It authorises that one person, for that one document.
- 03
Sign
The signer is shown every page of the document — signing opens only after the last one — answers any questions you asked, consents to sign electronically, and signs.
- 04
Seal
The completed file is fingerprinted, sealed, and issued with a certificate of completion recording the whole history.
When it completes, you get four things — not one PDF.
An agreement is only useful later if you can still prove what it said. These are produced together and bound to each other.
The completed record
- The signed document
- Your file, with each signature, date and answer printed in the box it was placed in.
- The certificate of completion
- A readable record of who signed, when, from where, and which steps occurred — including any that did not.
- The seal
- The cryptographic signature covering the document fingerprint, the certificate fingerprint, and each signer entry.
- The audit trail
- The underlying sequence of events the certificate is rendered from.
For everyday agreements.
- Freelancers and consultants — A contract or a statement of work, signed before the work starts.
- Small businesses — Client agreements, quotes to approve and supplier contracts.
- A few documents a month — A sign-off, a release or a simple agreement now and then. The Free plan covers three documents a month.
Questions before you start
Is an electronic signature legally binding?
Do the people I send documents to need an account?
What happens to my documents if CoreSign goes away?
Can I sign on my phone?
Do names in other alphabets print correctly?
Is there a free plan?
Every plan seals every document.
The cryptographic seal, the certificate and the audit trail are not a premium feature. They are what the product is.
Free
Free
3 documents per month
Pro
$25.00 /month
100 documents per month
- Your branding on the signing page
- API access
Business
$79.00 /month
Unlimited documents
- Your branding on the signing page
- API access
- Webhooks
Prices exclude any applicable taxes.