Hardened Cold Storage for Digital Assets

LOCK DOWN YOUR BITCOIN

PROTECT YOUR ASSETS > Theft, loss, hacks, human error, fire, flood, device failure & even lockout after death

Simple Point & Click Security

🛡Your own unique cipher map
🔐Encrypted across real-world locations
♾️Unlimited secure wallet backups

PASS IT ON >Grant your family access to digital assets in an emergency. Set up your own personal deadman switch inheritance solution.

Why Harden a Crypto Wallet?

A single paper or steel backup =
single point of failure

But making additional unprotected copies exposes you to more risk. We fix this with a simple idea: your seed is split into two files — a Seed Map and Seed Codes — linked by a unique cipher, and encrypted. Alone, each file is useless. Together, they restore your wallet.

This makes backups:

Safer to duplicate
copy them freely without risking compromise.
Easier to distribute
store across real-world locations with no weak link.
Ready for inheritance
pair with a deadman switch so your family can recover assets when it matters most.

It’s not about complexity. It’s about resilience. EncryptFire turns fragile backups into vaults you can pass on with confidence.

▶️ Walkthrough

We're all about self-security. No 3rd party custody here.

ENCRYPTFIRE is an app that runs offline in your web browser. It's designed to work with all major wallets. You can make multiple secure cold storage backups of any wallet that's BIP39 compliant (12, 18, 24 or even 25 seed words). That's 99.9% of the wallets out there. For more info see our FAQs.

Disaster-Proof Your Assets

Built for real people, not computer nerds. A turn-key system ensures nothing is left to chance. With the knowledge you've made your wallets robust and secure, comes the peace of mind to hold them long term.

Imagine a bulletproof backup of your crypto wallet seed phrases completely offline, encrypted, and accessible only to you. No risk of hacks, no lost access... no forgotten passwords. It's offline crypto hardened cold storage.

The serious self-custody solution built for regular folks who hold crypto / digital assets such as Bitcoin, Ethereum, Solana, Litecoin, XRP, Dogecoin, and maybe even a whole raft of memecoins that might moon. They all deserve a solid backup.

“ Now with ENCRYPTFIRE your secure crypto backups are quick and easy. This turnkey app runs in your web browser, disconnected from the Internet. It never talks to a server. Totally standalone and stores no data. We're all about self-custody, safe multi-location cold storage for regular people. Ready to go when you need to recover access any time ”
~ Nic Fehlberg (creator/founder)

What is ENCRYPTFIRE

It's a System & an Offline Web App

The System

Sure, anyone can encrypt a backup. But EncryptFire was designed specifically to do it without the complexity—no tech skills required. Simple password-protected files protect your sharded data, while keeping your seed phrases secure and invisible to prying eyes.

EncryptFire uses a brilliantly simple but powerful method to encode your seed words. Someone could stare right at your files and still have no idea what they’re looking at. It’s called a cipher map—an old-school obfuscation technique that’s as hard to guess as your seed phrase itself. Each cipher map is unique to your backup.

And here’s the kicker: you can recreate the entire system on paper. No joke.

With just three sheets of paper, scissors, some sticky tape, and a pen, you can manually build the same type of hardened backup. No passwords, no app—just the same underlying logic. EncryptFire takes that method, upgrades it with encryption, portability, and decentralization, and makes it fast and easy. That simplicity at the core is what makes it so powerful.

The Web App

✔️ Triple-layer protection: Cipher map for obfuscation, AES-256-CBC encryption with salted 32-character passwords, and sharded offline storage.
✔️ Truly offline: The app stores nothing. Everything runs in live browser memory and vanishes the moment you close the tab.
✔️ Open by design: No black-box nonsense. Standard, battle-tested JavaScript libraries handle the cryptography. The code is readable, auditable, and transparent.
✔️ Dead simple UI: The wizard-style interface walks you through each step. Backup and restore with just a few clicks.

Two backup options:

• Standard / Simple mode: Creates a password-protected PDF using 128-bit encryption. Doesn’t require the app to restore—great for non-technical users.
• Full / Pro mode: Encrypts your PDF’s data at 256-bit strength. Requires the EncryptFire app to restore, but still just a matter of loading the file and entering your password.

Both methods harden your cold storage. Both support deadman switch strategies so you can securely pass on your crypto—on your terms. That means your assets can outlive your devices, your memory, or even you—without relying on exchanges, lawyers, or third-party vaults.

EncryptFire runs in any modern browser offline. We strongly recommend using a fresh browser (like Firefox, Brave, Opera, or Edge) that isn’t your default and has no extensions enabled. Start fresh, stay clean. (does not run on mobile devices)

You can use EncryptFire as many times as you like. Back up multiple wallets with one cipher map — or create a new one each time. Its your choice.

Dependable By Design

Technically Speaking

✅ AES‑256‑CBC with unique salt and IV — Trusted, tested, audited
✅ 32‑character random passwords — Practically unbreakable by today’s standards
✅ Runs 100% offline — No cloud, no trackers, no phoning home
✅ Fully transparent code — No DRM, no mystery code, you can vet every line of code independently

“If quantum computers ever break AES‑256, the internet collapses well before your encrypted files on USB sticks.”

100% Transparency

✅ Uses proven open-source encryption libraries — no proprietary black boxes
✅ App runs locally in your browser — nothing is ever sent or stored online
✅ Every backup uses a fresh, randomly generated cipher — no repeats, no shortcuts
✅ Memory is cleared on refresh or close — nothing lingers, nothing leaks

“All our logic is visible to the user. No server calls. No storage in-browser. Just tight cryptography, all in plain sight.”

Why We Built ENCRYPTFIRE

Not everyone runs a node, shards keys with Shamir, or layers multisig. But if you believe “Not your keys, not your crypto,” you already know secure backups are non-negotiable.

EncryptFire was built for Bitcoiners who take self-custody seriously — no cloud, no DRM, no bloat. Just a lean, offline tool with nothing between you and your keys.

Because if you're going to be your own bank, your backups better act like vaults.

In self-custody, transparent and dependable beats complex and opaque. With EncryptFire, you don’t have to trust — you can verify.

12 words. 1 napkin.
Zero strategy 😋 Totally got this… right? 😅 My plan? Hide it in
the sock drawer 😆

Hiding your seed phrase is not a security plan

If you've ever had that quiet thought — "what if I lose access?" — you're not alone. Most people either avoid thinking about it… or they try to improvise with what’s lying around.

Peace of Mind, Built In

Peace of mind doesn't come from the storage device — it comes from knowing you’ve planned for failure, recovery, and even the unexpected.

Because real security isn’t just about where you store your keys — it’s about how you prepare for what life might throw at you. Fires, floods, mistakes, lost passwords, even the unthinkable. Peace of mind means you’ve thought it through… and set things up so your future self — or your family — won’t be scrambling in a crisis.

It’s not paranoia — it’s just not leaving things to chance. When your backup’s solid, you can stop worrying and get on with life.

CRYPTO HORROR STORIES

A big banking family, tech mogul, entrepreneur and an IT specialist.

Elon Musk

"I literally own zero cryptocurrency, apart from 0.25 BTC that a friend sent me many years ago. I have no idea where it is." – Elon Musk (2017)

Even the world's most tech-savvy billionaire lost track of his Bitcoin holdings. Without proper backup and redundancy, even small amounts (which can increase in value over time) can be permanently lost.

Matthew Mellon

As an ambassador of Ripple Labs, Matthew Mellon held $1 billion in XRP.
After his death, his family scrambled to recover his fortune.
Stored his digital keys in cold storage, under different people's names—but without proper access planning, his family couldn't retrieve the assets.

Gerald Cotten

Founder of QuadrigaCX, one of Canada's biggest crypto exchanges.
Held $250 million in customer funds—but died unexpectedly with all private keys.
He had joked about storing his keys in a bank deposit box and in a safe in the attic rafters, but no one else had access when he passed.

James Howells

In 2013, IT engineer James Howells accidentally threw away a hard drive containing 8,000 BTC (now worth hundreds of millions).
Despite extensive searches and recovery attempts, his Bitcoin remains lost in a landfill.
This serves as a reminder: Digital assets must be backed up securely, with redundancy and recovery planning.

FAQ

About Us

Our Mission

We are a small group of crypto enthusiasts and developers who have been in the space for several years. I'm Nic Fehlberg – creator and the founder of the company 'Crypto Security Tools'. I have seen people lose their crypto due to hacks, theft, lost seed words and device failure.

Yes, even I lost access to a wallet in the first month I got into crypto. This taught me a valuable lesson. I recognized a need for a better, more reliable system to manage and store wallet seed phrases.

OUR MISSION:
1. Help as many people as possible upgrade their wallet backup security
2. Provide mechanisms to pass on crypto to loved ones in the event of death
3. Promote responsible cryptocurrency self-custody

Not your keys, not your crypto.
Harden Up! 😁

"If you're going to be your own bank, you need added security with minimal complexity. Institutions all use hardened cold storage solutions for their clients. We should be doing the same." – Nic Fehlberg

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Stay safe, stay backed up, and may your seed phrases never wander. 🫡🪙🔥

Crypto Security Tools - for your consultancy firm

Please note: ENCRYPTFIRE provides a robust suite of tools to assist in securing your digital assets. However, it is not a substitute for professional legal counsel. We strongly recommend consulting qualified legal and estate planning professionals when preparing your Last Will & Testament.