---
id: KB-SC-020
url: https://app.codecontract.io/help/smartcheck/sealing-today-something-from-years-ago
idioma: en
categoria: smartcheck
subcategoria: empezar
audiencia: usuario
nivel: intermedio
actualizado: 2026-08-13
tambienEn: [es]
relacionados: [KB-SC-015, KB-SC-007, KB-SC-018]
citadoPor: [KB-SC-013]
---

# Sealing today something from years ago

_You can, and you should. But it proves you hold it like this today, not that it existed then — and that difference is everything._

**Responde a:** can I seal an old document · timestamping a five-year-old contract · proving a document dates from 2019 · certifying the old archive

On discovering how sealing works, the natural reaction is to want the whole archive certified at once. The operation is simple and makes sense; what needs understanding first is exactly what gets proven, because it is not what most people expect.

## What a seal applied today proves, and what it does not

| Claim | Does today's seal prove it? | What would prove it |
| --- | --- | --- |
| That this file said this today | Yes, beyond dispute | The seal itself |
| That it does not change from today on | Yes: any change is detected | The seal itself |
| That it existed five years ago | No | Whatever surrounded the document then |
| That nobody touched it in between | No | Versions, emails, records from that time |

> [!IMPORTANT]
> The third row must be clear before sealing a whole archive: **a seal fixes the moment it is applied, and that moment is today**. If in two years you dispute a 2019 contract sealed in 2026, what you can prove is that in 2026 the file was exactly that — nothing about 2019. It is not a flaw in the seal: it is what a timestamp means, which is why the moment to seal something is when it is born, not when it becomes a problem.

## So is sealing old material worth it?

**En corto**

- Yes, for a practical reason: from today nobody can alter it unnoticed.
- It freezes the version you consider good, which is often what gets disputed.
- And in an archive many people have passed through, that is worth more than it seems.
- What it does not do is fill the gap of the earlier years.

## What supports the age, since the seal cannot

1. **The email it was sent or received with back then** — With its date and sender, the commonest piece.
2. **What a third party did on the strength of it** — An invoice, a filing, a reply: that anchors the date.
3. **The intermediate versions** — An earlier draft evidences a process, not just a result.
4. **And anything not held only by you** — That is the criterion: what only you hold convinces less.

> [!WARNING]
> A detail that surprises people sealing old archives: **if the same document exists in two places with tiny differences, sealing both creates two official versions and neither beats the other**. Before sealing in bulk it is worth deciding which is the good one, because afterwards you hold two contradictory proofs instead of one doubt. It is the uncomfortable part of the exercise and also the most useful: it forces you to sort out what was duplicated.

> [!NOTE]
> What weight each kind of evidence carries and what is needed to support a date depends on the matter and the proceedings. **Your lawyer assesses that**; here we explain what a seal applied today adds and what it does not.

**Can I seal a scan of an old paper?**

Yes: it fixes that scan. The paper remains the source item.

**Does sealing many documents at once change anything?**

Not as to dates; it only saves time.

**What if the document was already signed electronically?**

Then its moment is already fixed: nothing more is needed.

## Ejemplos

**A company seals its old archive and finds the same contract in two different wordings.**

- Decides which version is the good one before sealing in bulk

→ It ends up with one clear proof instead of two official versions contradicting each other.

**A five-year-old document is sealed today.**

- Makes clear it proves how you hold it today

→ Nothing more is asserted than the seal says.

**It is presented as proof that it existed back then.**

- Accompanies it with other evidence from the period

→ The claim is supported by the right material.

**A whole history is sealed at once.**

- Seals what could end up disputed

→ Effort goes where it matters.

**There is doubt whether sealing old material is worth it.**

- Seals what still has live effects

→ What can still be disputed is covered.

**It is sealed and nobody notes why it was done then.**

- Records the reason alongside the evidence

→ Years later the decision is understood.