Protecting a document is not the same as proving it exists

BACOUL — Wed, 31 Dec 2025 18:03:06 +0000

Protecting a document is not the same as proving it exists

When people talk about “protecting” a document, they usually mean one thing:
preventing others from accessing it.

Encryption, passwords, access control, secure storage — all of these are about confidentiality.

But there is another dimension that is often overlooked.

Protection is not only about access

You can encrypt a file perfectly and still be unable to prove that it existed at a specific point in time.

If someone challenges your authorship, your idea, or your work, encryption alone does not help.
It only proves that you have something, not when it existed.

This is where a different kind of protection appears.

Protecting existence, not access

Protecting existence means being able to prove that a document existed at a given moment — without revealing its content.

This is done by computing a cryptographic fingerprint (hash) of the file and anchoring that fingerprint in time.

No content is shared.
No file is uploaded.
Only the proof remains.

This kind of protection is fundamentally different from access control.

Two complementary protections

To properly protect a document, both dimensions matter:

Access protection

Prevents unauthorized reading (encryption, passwords, permissions).
Existence protection

Makes the document’s existence verifiable at a specific point in time.

They solve different problems and should not be confused.

A practical example

If you write a document today and encrypt it, you can prove that you possess it — but not when it was created.

If you generate a proof of existence at the same time, you can later demonstrate that the document already existed on that date, even if its content remains private.

A note on tools

Some tools focus on access protection.
Others focus on existence proof.

For example, tools like TimeProofs illustrate this second approach: they create cryptographic proofs of existence without storing files or managing identities.

They do not replace encryption or legal notarization — they complement them.

Why this distinction matters

As more digital content is created, shared, and disputed, the ability to prove existence becomes as important as protecting access.

These are two different problems — and they deserve to be treated separately.

Understanding this distinction helps build better systems, better tools, and better trust.

TimeProofs v0.1 — A Free, Privacy-First Timestamp API for Developers (Public Beta)

BACOUL — Fri, 21 Nov 2025 10:13:16 +0000

TimeProofs v0.1 — A Free, Privacy-First Timestamp API for Developers (Public Beta)

webdev #opensource #api #security #privacy

TL;DR

Hash locally. Send only the hash. Get a signed timestamp in milliseconds.

Verify publicly forever.

Zero content. Zero cookies. Zero tracking.

👉 Try it → https://timeproofs.io/verify.html

📘 Spec → https://timeproofs.io/proofspec.html

💻 GitHub → https://github.com/BACOUL/timeproofs

🌐 Website → https://timeproofs.io

✅ What is TimeProofs?

TimeProofs is a tiny but powerful privacy-first trust layer for the web.

🔑 Hash locally — your content never leaves your device
⚡ Instant timestamps — cryptographic signatures in milliseconds
🔍 Public verification — anyone can verify proofs anytime
🧩 Edge-native API — built for automation, AI pipelines & workflows
🛡️ Open, inspectable & transparent — no blockchain, no uploads, no tracking
🚫 Hash-only, no logs — we never see your data

Just proof that:

“This data existed at this exact time, and hasn’t changed since.”

Try it → https://timeproofs.io/verify.html

🌍 Why TimeProofs exists

For decades, developers have lacked a simple, universal, private way to prove:

“This artifact existed at this exact moment.”

Most existing options are:

too heavy (blockchains, audit ledgers)
too centralized or opaque
not designed for modern developer or AI workflows

We wanted something:

minimal · private · fast · inspectable · universal

So we built it.

🧪 How TimeProofs works (in practice)

You hash your data locally — content never leaves your machine
You send only the hash to TimeProofs
You receive a signed timestamp proof
Anyone can verify using the same hash

We only see a fixed-length hash.

Nothing else.

🚀 Quickstart: Create your first proof

1. Create a proof

HASH="4fb84632453c4bad7d72a92b26fb9b7ecf2646fb109aa03a4e5a3d5d7"

curl -X POST "https://api.timeproofs.io/api/proofs" \
  -H "Content-Type: application/json" \
  -d "{\"hash\":\"$HASH\"}"

Example response

{
  "ok": true,
  "hash": "4fb84632453c4bad7d72a92b26fb9b7ecf2646fb109aa03a4e5a3d5d7",
  "version": "v0.1",
  "type": "event",
  "timestamp_iso": "2025-11-20T22:15:34.200Z",
  "verify_url": "https://api.timeproofs.io/api/verify?hash=4fb846..."
}

2. Verify later

curl "https://api.timeproofs.io/api/verify?hash=$HASH"

You’ll know:

whether the proof exists
when it was created
its version & integrity

🤖 Example: Proving an AI output

Your AI pipeline generates a PDF or JSON report.

You want to prove:

when it was created
that it hasn’t changed
without uploading or exposing the file

You hash the file locally, send only the hash to TimeProofs, and get a permanent public timestamp.

Already used for:

AI agent logs
dataset integrity
release signatures
compliance automation
customer-facing reports

Zero content. Full trust.

🛡️ Security Model (simplified)

TimeProofs follows a strict, transparent security model:

No sensitive data ever touches the server
No user accounts
No cookies or invasive analytics
Strict CSP across the entire site
Hash-only inputs → we cannot leak what we never receive
Minimal attack surface (static site + edge API)

Full details → https://timeproofs.io/security.html

🗺️ Roadmap (high-level)

v0.2 — Coming next

JavaScript SDK
Offline verification bundles
Multi-backend storage
Self-host documentation

v1.0

Dashboard
API keys
Pricing
Early partner program

v2.0

Distributed ProofChain
Multi-provider guarantees
Foundation governance

Vision: Make TimeProofs the open standard for digital proof of existence

— something every AI system, developer, and platform can rely on.

🤝 How you can help (Public Beta)

If you:

maintain APIs or SaaS
build AI tools
care about provenance, audit trails, or data integrity
want provable releases or timestamped artifacts

We’d love your feedback.

👉 Try it → https://timeproofs.io/verify.html

👉 Read the spec → https://timeproofs.io/proofspec.html

👉 GitHub → https://github.com/BACOUL/timeproofs

🎉 TimeProofs v0.1 is live

Hash locally.

Get a signed timestamp.

Verify publicly.

Zero content. Zero cookies. Zero tracking.

Just proof.

https://timeproofs.io

Forem: BACOUL

Protecting a document is not the same as proving it exists

Protecting a document is not the same as proving it exists

Protection is not only about access

Protecting existence, not access

Two complementary protections

A practical example

A note on tools

Why this distinction matters

TimeProofs v0.1 — A Free, Privacy-First Timestamp API for Developers (Public Beta)

TimeProofs v0.1 — A Free, Privacy-First Timestamp API for Developers (Public Beta)

webdev #opensource #api #security #privacy

✅ What is TimeProofs?

🌍 Why TimeProofs exists

🧪 How TimeProofs works (in practice)

🚀 Quickstart: Create your first proof

1. Create a proof

Example response

2. Verify later

🤖 Example: Proving an AI output

🛡️ Security Model (simplified)

🗺️ Roadmap (high-level)

v0.2 — Coming next

v1.0

v2.0

🤝 How you can help (Public Beta)

🎉 TimeProofs v0.1 is live