Back
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Your seed phrase is a single point of failure.
Sead makes it your decentralized fortress.
Let’s start with the basics
Before diving into Sead Tool, it’s crucial to understand the core elements of crypto security.
What’s a Seed phrase ?
A seed phrase is a sequence of 12-24 words that serves as the master key to your cryptocurrency wallet.
Losing it means losing access to your wallet permanently.
Restore your wallet on any device, anywhere, anytime using just these words.
What’s a Blockchain ?
The blockchain is a shared, permanent record of transactions, copied across a global network.
Its decentralized nature makes it nearly impossible to alter, ensuring trust without intermediaries.
Your crypto doesn’t sit in an account : it exists on the blockchain, managed through your wallet.
What’s a Crypto wallet ?
A crypto wallet manages the private keys you need for daily transactions and to prove ownership of your assets.
It’s the interface that allows you to send, receive, and interact with your crypto on the network.
While the app is for daily use, the seed phrase is the master key for recovery, representing both ultimate control and a critical point of failure.
Crypto worries ? We get it.
Losing access to your crypto is a nightmare. We know how stressful it can feel when your seed phrase is the only thing standing between you and your assets.
What if your backup provider shuts down tomorrow?
If the provider goes under, you could lose access to all your funds, no matter what.
What if your "safe spot" isn't so safe ?
That single piece of paper or metal is a single point of failure. One fire, flood, or simple mistake, and your funds could be gone forever.
Existing solutions are complicated and insecure.
63% of Americans have little to no confidence in the safety and reliability of current cryptocurrency solutions.
You fear losing access to your crypto forever.
Over 4 Million BTC (worth more than $300 Billion) is now 'zombie' crypto, lost forever due to inaccessible seed phrases.
Losing your seed phrase can cost you everything.
An estimated 1 out of 3 Bitcoins will never move again.
Sead Tool, a simple and secure solution for your crypto
Sead makes a backup for your wallet and empowers you to fully own and protect your seed phrase. No servers. No data collected. No dependencies. Even if we disappear.
Full autonomy
No third-party involvement, zero compromise.
Ease of use
Turn a complex backup into a few simple clicks.
Total security
Protect your seed phrase from being lost, stolen, or damaged.
Private & local control
Everything happens offline, on your device.
Lifetime license
One-time purchase : unlimited use and lifetime access to your backups.
Secure your legacy
Sead Tool's backup is tailored to be safely passed on to your loved ones.
How It Works
Here’s how Sead Tool works.
Start your process
Choose whether to back up your seed phrase or restore it from existing QR code fragments.
Choose your QR code count
Decide how many QR code fragments you want to create to secure your seed phrase.
Define your seed phrase
Enter your 12, 18, or 24-word recovery phrase to start the process.
Generate QR code fragments
SeedTool transforms your seed phrase into multiple encrypted QR codes using a threshold scheme.
Loved by users
Here’s what people are saying about us.
The app is amazing and the QR Code hunt is thrilling! For the product to really gain traction, it needs more advertising and gamification. There’s a lot of projects, and in my opinion, we stick with it for a good reason! Thank you, I enjoyed it and I hope to continue enjoying it while using your products! Have a great day and good luck!
Even though I'm new to the world of crypto, the team succeeded in explaining the problem that they are trying to solve and the solution that they have to offer. Their solution is innovative and solves a problem that has never been dealt with before.
Cryptocurrencies promise freedom in a controlled digital world, but many find them complex. SEAD’s experts—Hugues Dorchy, Olivier Libon, and Jérôme Davidts—offered a clear, accessible coaching session that explained the origins, essence, and functioning of crypto, providing a solid, practical introduction for anyone seeking to understand it.
I just managed to access the seed phrase and the Bitcoin wallet—the system is incredible!
Sead is more than a project, it's above all a team of passionate people. A passion that I was able to feel during the presentation of their project. I was immediately won over by their project. I appreciate the control it gives me over my assets without relying on a third party.
Sead provided me with expert consultancy to help me resolve my issue with my Crypto wallet and gave me educational explanations on the proper use and risks of cryptocurrencies. I recommend them to anyone who would like support, explanations, training, or consultancy to avoid mistakes and the risks of the cryptocurrency world
The app is amazing and the QR Code hunt is thrilling! For the product to really gain traction, it needs more advertising and gamification. There’s a lot of projects, and in my opinion, we stick with it for a good reason! Thank you, I enjoyed it and I hope to continue enjoying it while using your products! Have a great day and good luck!
Even though I'm new to the world of crypto, the team succeeded in explaining the problem that they are trying to solve and the solution that they have to offer. Their solution is innovative and solves a problem that has never been dealt with before.
Cryptocurrencies promise freedom in a controlled digital world, but many find them complex. SEAD’s experts—Hugues Dorchy, Olivier Libon, and Jérôme Davidts—offered a clear, accessible coaching session that explained the origins, essence, and functioning of crypto, providing a solid, practical introduction for anyone seeking to understand it.
The only safe, simple, decentralized backup
See how Sead Tool connects with Safe, Guidance, and Directive to secure your crypto journey with total autonomy.
Other solutions
As seen in the media
See how Sead’s founders share their vision for a decentralized future, showcasing unmatched self-custody and truly secure crypto backup solutions.
The 1 Bitcoin challenge,
our public proof of security
We funded a public Bitcoin wallet and secured its seed phrase exclusively with Sead Tool. Since the challenge began, the funds have remained untouched despite a bug bounty program inviting hackers of the world to break it.
You can verify the wallet on the blockchain yourself to see the full transaction history and confirm our security is uncompromised.
Our solution, your control
Founded by experts in digital identity and cryptography, our team has launched projects like Belgium’s electronic ID card and supported multiple successful tech ventures.
Today, we bring this expertise to provide simple, secure, and decentralized solutions, so managing your crypto is fully in your hands.
Start securing your crypto today
Sead Tool gives you total control over your seed phrase, with zero compromise and full decentralization. Take the first step towards financial sovereignty.
Frequently asked questions
Is Sead Tool a replacement for my hardware wallet?
No, they are designed to work together for maximum security. A hardware wallet secures your daily transactions by signing them offline (it’s your “pen”).
Sead Tool secures your ultimate backup : the seed phrase itself (it protects the “master key to your vault”).
Sead Tool is not a wallet : it has no keys and does not connect to the blockchain. Its sole purpose is to run completely offline to secure your master key, complementing the security your hardware wallet provides.
What do I get when I purchase Sead Tool ?
You get a stand-alone software tool with a lifetime personal license. Sead Tool is a one-time purchase that includes:
- Unlimited Use: Secure an unlimited number of seed phrases for any blockchain.
- No Installation: The tool runs directly in your browser offline, like a local webpage. You can use it on a laptop, desktop, or tablet.
- Universal Compatibility: It works with any 12, 18, or 24-word seed phrase from any BIP-39 compatible wallet (Ledger, Trezor, MetaMask, etc.).
You can explore every feature right now with our free online simulator to see exactly how it works before you buy.
Do I need to trust the Sead company for this to work ?
No. The protocol is designed around the principle of zero trust. Once you have the software, you have zero dependency on our company or our servers.
The entire process runs offline on your machine.We will never access your QR codes, your seed phrase, nor know if, when, or how you use Sead Tool. Your security is entirely in your hands, which is the ultimate guarantee of sovereignty.
What should I do to ensure I use Sead Tool securely?
Sead Tool is designed to be secure for everyone. The core of its security is that it runs completely offline. By disconnecting your computer from the internet before you start, you create a secure, isolated environment that eliminates any risk from online threats.
For this reason, using a trusted, malware-free personal computer is a fundamentally secure and sufficient method for the vast majority of users.
For users seeking to eliminate even the most theoretical risks, such as a pre-existing compromise on the device itself, running Sead Tool on a dedicated air-gapped machine or from a temporary operating system (like Tails) offers an additional layer of protection. These methods ensure that absolutely no trace of the operation is left behind.
Can I store one of my QR code fragments in Sead Safe ?
Yes. Storing one encrypted fragment in Sead Safe is an excellent way to add digital and geographic redundancy to your backup plan.
Because Sead Safe is a secure cold storage vault, it provides a robust environment for one piece of your backup. However, remember the golden rule: never store all your fragments in the same place or format.
I keep my crypto on an exchange (like Binance or Coinbase). Can I use Sead Tool ?
When you keep your crypto on an exchange, you don't have a seed phrase because the exchange controls the master keys. Sead Tool cannot be used in this context. You do not actually own it, you are trusting the exchange to hold it for you. This is known as a custodial setup.
While convenient, this model exposes you to critical risks: the exchange can be hacked, can freeze your assets, or can go bankrupt. This is the origin of the core crypto principle: "not your keys, not your crypto."
However, it is always time for you to create your own personal hardware wallet which gives you a seed phrase. Sead then allows you to secure that seed phrase in a way that is truly decentralized and sovereign, ensuring that you will always be in control of your assets.