Last Updated on November 15, 2025 by DarkNet
🔐 One-Time Notes
The simplest, safest way to share sensitive information — and make it disappear forever.
In a world overflowing with messages, leaks, screenshots, and accidental forwards, some information deserves something better than just a chat bubble. It deserves privacy, intentionality, and finality.
One-Time Notes is built for that exact moment — when you need to send a password, an API key, a private message, or sensitive instructions, and you want absolute confidence it won’t live anywhere longer than necessary.
This isn’t just another messaging tool.
It’s a self-destructing, privacy-first delivery mechanism for your most delicate data.
💨 Send once. Read once. Gone forever.
When you create a note, One-Time Notes generates a unique one-time link. Whoever opens it sees the content exactly once. The moment it’s viewed, the note is automatically destroyed.
No “trash bin.”
No “recently deleted.”
No aftertaste.
Just pure, irreversible ephemerality — by design.
🧠 Client-side encryption
Your words are encrypted before they leave your device
Unlike most services that promise privacy but process your text on the server, One-Time Notes uses a powerful cryptographic design:
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Your message is encrypted in your browser.
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The server receives only ciphertext — meaningless scrambled data.
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The secret decryption key is stored in the URL fragment (#), which browsers never send to servers.
This means:
✔ We can’t read your note.
✔ We can’t log it.
✔ We can’t leak it.
✔ We can’t help anyone decrypt it — even if they ask nicely.
You and the recipient control the secret.
No one else.
🧨 Auto-delete with zero residue
Every note in One-Time Notes has a built-in fuse:
🔥 Open → Self-Destruct
⏱ Or expire automatically
‼ No backups, no logs, no trailing metadata
This eliminates the biggest risks of private data leakage:
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Forgotten old messages
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Unsecured screenshots
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Lost email drafts
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Chat backups in the cloud
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Admins snooping on server logs
Your note is not only temporary — it’s intentionally disposable.
👁️ Privacy by default
No signup. No tracking. No breadcrumbs.
We believe privacy shouldn’t be a luxury feature — it should be the default mode.
That’s why One-Time Notes requires:
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No accounts
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No email
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No phone number
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No analytics
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No cookies (except minimal session CSRF tokens)
We store only the essentials: the encrypted blob and a timestamp. Even that disappears the moment your note burns.
You’re not the product.
Your secrets aren’t our asset.
Your metadata isn’t our business.
🔗 The magic of the URL fragment (#)
Here’s where the design becomes beautifully elegant:
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The encryption key is embedded in example.com/#ID.KEY
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Browsers never send anything after # to the server
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So even if someone intercepts the HTTPS request or obtains server logs →
they get nothing useful
Sharing a note becomes as simple as sharing a link — but with the security of modern cryptography baked in.
⏱ Flexible TTL
Choose how long your secret should live
Not all sensitive data is the same. Some should burn instantly, others should live slightly longer.
One-Time Notes gives you customizable lifespans:
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🔥 Read & Burn — open once, instantly destroyed
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⏰ 10 minutes
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🕒 1 hour
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🌙 24 hours
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📅 Several days, if needed
After the TTL expires, the encrypted note is permanently purged.
Because privacy also means control over time.
🧩 Open source
Transparency isn’t a slogan — it’s a guarantee
The entire project is open to review, audit, and improvement by the community.
Why?
Because privacy tools shouldn’t rely on trust.
They should rely on verifiable code.
Open source means:
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No hidden tracking
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No “mystery features”
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No surprise analytics
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No secret partnerships
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No dark patterns
Just clean, honest, auditable security.
🛠️ A tool built for professionals — used by everyone
One-Time Notes is already becoming the go-to tool for:
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Developers sharing API keys
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Sysadmins distributing passwords
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Founders sharing credentials
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Security teams exchanging sensitive data
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Journalists, activists, and whistleblowers
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Anyone who wants certainty their secrets won’t spread
If you’re dealing with information that matters, One-Time Notes gives you the confidence that it won’t outlive its purpose.
🔥 Simple. Secure. Final.
There’s something powerful about a message that exists only at the moment it’s read.
That’s the philosophy of One-Time Notes:
Your words — seen once, gone forever.
Try it, share a secret, and experience true ephemeral communication.
👉 One-Time Notes — where privacy isn’t a feature. It’s the foundation.
