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What SignSpry is, and how a signature actually works

The whole product in five minutes — from uploading a PDF to a sealed, verifiable document.

SignSpry turns a document into an agreement that people can sign from a phone, and that you can prove wasn't altered afterwards. Everything runs on our own servers in Mumbai, and your document text is never sent to an outside AI service.

The shape of it

  1. Upload or write a document. Drop in a PDF or Word file, paste a Google Docs

link, or write one in the browser editor. There are also 61 ready templates drafted for Indian practice.

  1. Say who signs, and in what order. Each recipient gets a role — signer,

approver, witness, or a CC who only receives a copy.

  1. Place fields. Signature, initials, date, text, checkbox, payment and more.

Or put anchor tags in the document and let us place them.

  1. Send. Everyone gets an email with a private link. No account needed to sign.
  2. They sign. In their browser, in their own language,

with a consent record captured before anything is applied.

  1. We seal it. When the last person signs, we flatten every field into the PDF,

attach a certificate of completion, and apply a cryptographic seal.

What "sealed" means

The finished PDF carries a digital seal over its exact bytes. Change a single character afterwards and the seal breaks. Anyone — including someone with no SignSpry account — can check a document at Verify a document and see whether it is intact and who signed it.

Alongside the seal we keep a hash-chained audit trail: every event, from "invitation sent" to "signature applied", linked to the one before it so the sequence cannot be quietly rewritten.

You do not need to understand any of the cryptography to use SignSpry. It's there so that if an agreement is ever questioned, the answer is arithmetic rather than argument.

What happens after signing

Signing is the middle of an agreement's life. Once a document is complete SignSpry indexes its full text so you can search inside it, pulls out the dates you're committed to, and can review the clauses for what's missing or one-sided.

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