Share & Sign

Sent Versions — Prove Exactly What You Shared

Every deck you send and every document you sign is sealed with a tamper-proof fingerprint — so a recipient can verify they're seeing exactly what was shared, unchanged, and your unsent edits stay private.

  • A recipient of a signed document sees the exact version you sent — your later edits stay private drafts until you publish a new version, so a contract can never quietly change after it's signed.

  • Every send, share, and live presentation is sealed with a SHA-256 fingerprint — the same one an e-signature freezes against, so a signed version and its signature are one unbroken chain.

  • On a shared deck link, a trust badge shows the recipient the exact version they're seeing — “Version 3” with its fingerprint — while your unpublished edits stay private drafts until you publish. No more “which version did they actually see?”

What you send is sealed

Prove to a recipient they're seeing exactly what you shared — unchanged.

A PDF in an inbox proves nothing — nobody can show which version was actually sent. A cloud link is worse: it can quietly change underneath. In Decks, every deck you send and every document you sign is sealed the moment it goes out with a tamper-proof SHA-256 fingerprint. The recipient sees the exact version sent — and your later edits stay private drafts until you send a new one.

It's the same fingerprint an e-signature freezes against, so a signed version and its signature are one unbroken chain. Every send, share, live presentation, and signature leaves an immutable record — and drafts are never visible to anyone.

One document, three truths

The owner raised the fee after sending. The recipient never sees it.

EditedOwner's live draft
DRAFT · UNSENT

Master Services Agreement

Fees: $18,000 payable Net-15.

The owner raised the fee and shortened the terms — but hasn't re-sent. Only the owner sees this.

As sentWhat the recipient sees
SEALED · v1

Master Services Agreement

Fees: $12,000 payable Net-30.

Exactly the body that was sent. The owner's later edit is invisible here.

SnapshotThe immutable seal
Version1
TriggerSent by email
Sealed at12 Jul 2026, 09:04
Integrity✓ verified · unchanged
content_hash8e95b2a03a1d79c64876781366ddd0e353de97672697e7d2480f7b884e0eac1d

The owner's draft hashes to be388ecd4a16 — a different fingerprint, provably not what was sent.

The owner raised the fee after sending — but the recipient still sees the sealed first version. The draft never leaks, and the fingerprint proves it.

Sealed on every channel

The link always shows what you've published. Every send leaves a seal.

The share link is permanent — but the recipient always sees the version you've published, not your live drafts. Every crossing still cuts an immutable version into a record that can't be erased: email, copy-link, WhatsApp, live present, and signature.

EmailCopy linkWhatsAppPresentSign
Sent record — can't be edited
1
Sent by email
8 Jul · 718b12077ece
2
Shared to WhatsApp
10 Jul · b8ab3234b9e7
3
Presented live
11 Jul · 5284d6885510
4
Signed
12 Jul · 6be504ed6126

On a shared deck link

A recipient trust badge — “Sent as Version N”, honestly.

The recipient always sees a calm badge naming the published version and its fingerprint. Privately, you're flagged when you have unpublished draft edits — the recipient never sees drift.

What the recipient sees
Sent as Version 3
Unchanged since it was sent
Shared 12 Jul 20268e95b2a03a1d
What only you see
Sent as Version 3
You have unpublished draft edits
Shared 12 Jul 20268e95b2a03a1d

One hash, two proofs

A signed version and its signature — the same fingerprint.

One rule makes the fingerprint: the signer signs the sealed version they saw, so the signature's hash equals the version's, exactly. The signature stays permanently valid for the sealed version it signed; a later edit simply creates a new draft the signature doesn't cover — presenting an edited document as the signed one is immediately detectable by the hash mismatch.

The one canonicaliser (SHA-256)
content_hash( body )
the same fingerprint — by construction
Sent Version content_hash
5284d6885510
Signature signed_schema_hash
5284d6885510
Signature intact
The owner edited a different page — the signed version didn't change.

A record that can't be erased

Every version sent — the recipient can browse every sealed version.

When more than one version was sent, the badge opens to the full history — each with its number, trigger, date, and fingerprint. Drafts are never listed; only sealed sends.

Sent versions
3
Version 3 · Signed
12 Jul 2026 · 5284d6885510
2
Version 2 · Shared
10 Jul 2026 · b8ab3234b9e7
1
Version 1 · Sent
8 Jul 2026 · 718b12077ece

Per-version insights

Which version your audience actually saw.

View analytics break down by the sealed version each viewer saw — so you know whether your update landed, or the audience is still on an older one.

Views by version
Version 112
Version 228
Version 36
Current draft3

Step by step

From send to a version you can verify — in four moves.

  1. You send, share, or present

    Email a deck, copy the link, share to WhatsApp, go live to present, or send a document for signature.

  2. The version is sealed at that instant

    Decks captures the body verbatim and fingerprints it with SHA-256 — atomically with the send, so a send can never exist without its sealed version.

  3. The recipient sees what was sent

    Both documents and decks show the recipient the sealed version you published, never your private draft — with a badge naming the version and its fingerprint.

  4. Anyone can verify

    The recipient eyeballs the fingerprint against your copy, browses every sent version, and you see which version the audience saw. Delete the deck and its sealed versions go with it.

Where teams use it

When “which version did we see?” stops being a question.

Consultants

“That's not what we agreed”

Open the exact version the client saw, fingerprint and all — no more word against word.

Sales teams

Re-price without worry

Your edits stay private drafts, and every version the buyer saw stays sealed on the record.

Agencies

Protected from both sides

Every proposal and deliverable you send is sealed — and under White-Label, the record ships under your brand.

Why it matters

An attachment proves nothing. A sealed version proves everything.

A file in an inbox can't show which version was sent, and a cloud link changes underneath you. A sealed version ends both: an immutable record of exactly what you shared, with a fingerprint anyone can verify — the same fingerprint your signature stands on.

Sent Versions — Prove Exactly What You Shared — Decks.Studio · Decks.Studio