OpciloSeal and verify

Product features

Proof people can trust — without asking them to sign up.

Seal any file, share one link, and let recipients confirm the file is unaltered in seconds. Start free. Add confidential delivery, invoicing, and teams when you’re ready.

We’re not DocuSign. Opcilo proves a file is unaltered and traceable to its issuer — it doesn’t collect wet or electronic signatures.

No recipient loginTamper-evident sealsConfidential on Pro
  • SHA-256 sealed fingerprints
  • AES-256 encryption at rest
  • Tenant-isolated document storage

What you get

Seven capabilities, clearly gated by plan. Jump to any section — or scroll and explore.

Send a signed contract without hoping email didn’t alter it.

Seal once

Upload a PDF, contract, drawing, or zip. Opcilo seals it with a cryptographic fingerprint and gives you a short code anyone can open. You stop chasing attachments — they get proof.

  • Works with PDFs, Office, images, CAD, video, ZIP, and more
  • Short code + URL ready for email, WhatsApp, or a portal
  • Fingerprint stays tied to the exact bytes you uploaded
Start freeTry the verify page

Without Opcilo

Scattered attachments, “please resend,” and no way to prove the file is original.

With Opcilo

One verification link. Instant integrity check. No login required for the recipient.

A client opens your link on mobile and trusts the file before downloading.

Verify without an account

The verify page is the product for your recipient. Status, issuer, and seal date appear instantly. Friction drops to zero, so trust (and replies) happen faster.

  • No recipient account or app install
  • Clear verified status, issuer, and seal date
  • Works anywhere a link opens — desktop or phone
Start freeTry the verify page

Share a private agreement that must not land in the wrong inbox.

Confidential delivery

Pro

Mark a seal confidential and name who may open it. Recipients prove identity with a one-time code. Add a security question when you need an extra step before the file appears. Built for low-trust handoffs across the region.

  • One-time passcode to the recipient’s email or phone
  • Optional security question for higher-stakes shares
  • Content stays locked until the right person unlocks it
Start freeSee Pro plans

Without Opcilo

Sensitive contracts forwarded by accident. Attachments sitting in the wrong inbox for weeks.

With Opcilo

Only named recipients unlock the file — with a one-time code, and a security question when you need a second gate.

Freelancers and AP teams who need proof and payment in one step.

Get paid on invoices no one can dispute

Pro

Seal an invoice and your client sees integrity status plus amount due — ending “which PDF was final?” Pay now or follow your instructions without a separate portal. Pair with a Trust Badge after KYC so your name carries weight.

  • Amount due next to seal status
  • Pay now or structured payment instructions
  • Trust Badge + business page available after KYC (Pro+)
Start freeSee Pro plans

Monthly client packs or formal tender submissions.

One link, many documents

Pro

Seal Bundles group multiple documents under a single shareable URL. Recipients open one experience instead of juggling attachments. Built for Pro users who ship complete sets.

  • One notification, one link for the whole set
  • Each document stays individually sealed
  • Ideal for tenders, handovers, and recurring packs
Start freeSee Pro plans

Tax season intakes, onboarding packs, and recurring client collections.

Request documents from clients

Pro

Build a checklist, attach blank forms when needed, and share one secure link. Clients download what they need, upload completed files, and you review everything in your workspace — without asking them to create an account.

  • Checklist with optional blank forms per item
  • Clients upload without creating an account
  • Pro capability for accountants and client-facing teams
Start freeSee Pro plans

A firm sharing monthly seal capacity across partners.

Work as a team

Team

When solo Pro capacity isn’t enough, Team and Business workspaces pool monthly seals and give people clear roles. Templates and shared delivery stay consistent as you grow.

  • Pooled monthly seals for the workspace
  • Roles that scale without chaos
  • Requires Team or Business — not included on Pro
Start freeSee Team plans

How trust is built

Security claims you can take literally

No vanity metrics. Opcilo seals documents with SHA-256 fingerprints, encrypts storage at rest with AES-256, and runs on Microsoft Azure.

  • SHA-256 sealed fingerprints
  • AES-256 encryption at rest
  • Tenant-isolated document storage

Ready to send documents no one can question?

Start free with 5 seals per month. Seal your first document and share a verification link today.

Start freeTalk to our team