Fast and secure crypto wallet with offline signing and hardware security

Professional Cold Crypto Wallet

Supports over 11,000 cryptocurrencies and secure offline transaction signing

Make crypto transfers instantly – just tap your physical NFC card to your smartphone. Share the card with friends or pass it on as an inheritance.
Store it as an asset.
Your funds are yours alone. This is a cold wallet: the private key and seed phrase remain exclusively on your device. We don't store your funds, so we don't require documents or KYC.
Integration in just a couple of clicks. Add our system to your website or store to accept crypto payments.
Everything works without unnecessary complications: no hidden software or constant processes in the background – just you and your wallet.
Maximum security. Offline transaction signing on a dedicated device – a level above all standard solutions.
Free basic version available on Windows, macOS, Linux, iOS and Android. Advanced functionality for just $99.99.
Free basic version with sufficient functionality. Advanced functionality for just $99.99.
Support for the most modern technologies: Bitcoin Taproot addresses are available in the wallet, as well as Ethereum, BNB (BSC), Tron, Solana, TON, XRP, Monero, Dogecoin, Litecoin, Zcash, Arbitrum L2 and Polygon. List of all supported cryptocurrencies.

usb professional hardware nfc wallet Mitilena: bitcoin, ethereum, bnb, xrp

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True Cold Wallet

Android

Support for hardware NFC cards and fast QR payments

True Cold Wallet

iPhone

Support for hardware NFC cards and fast QR payments

Cold wallet (x64, Portable)

Windows

Private key stays on device.

Version: 2.3.58

Cold wallet (Intel, M1)

Mac OS

Private key stays on device.

Version: 2.3.61

Cold wallet (x64, arm64)

Linux

Private key stays on device.

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Bitcoin, BTC

$61,144

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Ethereum, ETH

$1,607.28

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Professional non-custodial (cold) wallet

You can sign transactions completely offline. You can generate private keys and cryptocurrency addresses completely offline. Our wallet supports over 11,000 cryptocurrencies, the full list is here here.

You can store billions of dollars in Bitcoin in this wallet. This is the most paranoid level of security. It was made primarily for himself. People who have worked in other popular wallets and know the kitchen from the inside. They know those non-obvious things that most people don't know.

With our side project Mitilena Pay, you can issue cryptocurrency invoices and integrate cryptocurrency payments on your website.

Frequently asked questions

Is Mitilena Wallet a non-custodial wallet?

Why is a non-custodial wallet better than a classic one?

Am I the owner of the private keys in your wallet?

Is Mitilena a cold wallet?

Is Mitilena a wallet with an offline signature?

Is it possible to use Mitilena Wallet on a flash drive for free?

It's too hard for me, how can I just start using it?

What is a private key in cryptocurrency and how does an address relate to it?

What is blockchain in a nutshell?

How can you encrypt an entire notebook with an inventory of goods into one small code?

What is encryption in a nutshell?

Is it really impossible to find a private key by brute force?

Is a blockchain transaction authenticated with the sender's private key?

Does a non-custodial wallet sign a transaction offline?

Why is offline transaction signature needed?

If your computer is infected, then nothing will help you except an offline signature. Even a computer infected with a thousand Trojan horses will not be able to steal your cryptoassets, even your private key in clear text. Simply because it will not be able to send this information in any way. No network = no delivery of stolen information. This is security at the level of governments and military organizations.

Storing cryptocurrency in custodial hot wallets or exchanges. This is the most common, but extremely unsafe way. It accounts for about 95% of the entire cryptocurrency market, as exchanges are the main gateway to the world of cryptocurrencies. Your assets don't belong to you at all. You can dispose of them as long as the exchange is favorable to you. If the exchange doubts the documents about your place of residence or the origin of funds, it may request a certificate: where did you get $10,000, which you used to buy bitcoin 5 years ago, and how did you earn $10 million? Ah, no certificate, then our AML KYC department on the Coconut Islands decided to block you for supporting terrorism, extremism, and all sins combined. Thank you for your bitcoins, they will go to the development fund of our AML KYC department. Direct all questions to the court on the Coconut Islands, but the airport has not been built here yet, use boats. Add to this that all crypto viruses in the world are aimed at these wallets and exchanges with hacking through address substitution.
Storing funds in web wallets extensions like MetaMask and so on. They inform every site that they are installed on your computer. Every. And if there's a hacker on the other side, he can try to hack it by throwing some fraudulent dialog at you. In addition, you enter a private key into it and whether it was sent somewhere else or not, no one knows and will not know (see point 5 on this topic).
Storing funds in free cold wallet programs. First, all the viruses in the world are aimed at them, second, as in the case with the point above, you entered a key there and whether it was sent somewhere else or not, no one knows. However, this is already the first acceptable option. If the amounts are small, then this is the entry point for storage. Our solutions are also included here, such as using a website or downloading our free applications (except that we are not so popular and all the viruses in the world are not yet aimed at us).
Storing a private key on HSM hardware flash drives like Yubikey. In theory, this is one of the secure options, but the private key cannot be extracted from the flash drive itself, in any way. This means that your condition completely depends on the functionality of the flash drive, which is extremely unreliable. Imagine that your million dollars depends on a device that can easily fail, like a microwave. Go to amazon or ebay, open any popular flash drive, see how many negative reviews it has, that it just stopped working. Now think, you took a million dollars and put it on a device that is Guaranteed to break someday according to the laws of physics and this day can come any day, especially unclear chips can stop working any day. And if it breaks, there is no way you can get your bitcoins out of there. It can't even be sent to service, because the manufacturer company itself states that the private key cannot be extracted from there.
Classic hardware wallets on USB flash drives. This is already a worthy level. Compared to HSM flash drives, you can already export the private key and print it out, put it in a safe, and if the wallet flash drive fails from carrying it in your pocket and moisture, you can in theory find the private key in the safe, buy a new wallet and load it there (however, in practice, the sheet with the private key will most likely be lost by this point). Non-obvious disadvantages of this solution: the same as with MetaMask, each hardware wallet installs a "bridge" on your computer between the physical device and the browser, that is, every website on the internet sees that you have a hardware wallet connected and can try to force a connection with it. If there is a connection, then there is a possibility of hacking. Because opening to every site is still too much. Hackers implanted a virus in your favorite site, you went there with a connected wallet and immediately attempts at hacking began, you don't need to download anything, your wallet interface is open by default. Further. For me, more important. The bridge is an application that hangs in hidden mode and always works, even after 5 years, if you no longer use the wallet. It consumes system resources and is constantly doing something. What exactly is it doing? What can be constantly calculated in the background? Why for the sake of one security do I sacrifice another, installing an unclear hidden undocumented service on my computer? Maybe it's spying on me? Next point. You must trust the company 100%. Because the signature there happens at the moment when the wallet is online, that is, even if no one hacks the wallet, it can be hacked by the company itself or by an individual employee. Whenever there is an exchange of information and you don't control this information, there is always a chance that your seed phrase or private key will fly away in the general flow. You won't be able to prove anything. Understand, this is not a bank, where you can trace the entire chain and block payments. Here, they will steal a million dollars and people will not even be able to explain technically competently what happened to them. And they won't give them a platform for a voice, they won't invite you to television, and even if they do, you won't be able to argue. You didn't install proxying of all network requests through Fiddler on your computer and didn't track the behavior of someone else's program for a year. And you don't have these logs, so don't slander, and here's a lawsuit for you about protecting honor and dignity. And your private key in the table was seen by the maid. And the last point. Many chips used in such wallets have long been hacked. This is widely known among security experts. Therefore, one of the popular wallets is even ready to decrypt its own wallets confiscated by the police. That is, it is protection from a neighbor, not from a powerful force.
The best level of convenience and reliability: our solution with NFC hardware cards. Something similar to an HSM flash drive and hardware wallets. However, there are no disadvantages, as with the HSM flash drive in the exclusivity of one flash drive. With us, you can have the same private key on any number of cards (by default, three). There are no disadvantages, as with hardware wallets, you don't need to install a "bridge" hidden program. You don't need to buy more than one wallet. You don't need to store the private key in an unsafe place where it can be stolen, for example, during cleaning. And in general, it's just very convenient, you don't need to connect a flash drive and so on. If it takes 4 billion years to decrypt an HSM flash drive, then it takes 4000 years to decrypt our card. Yes, a little less, but identical in practice. There is only one point that is similar to the hardware wallets above, you need to trust the company 100%.
Paranoid level of security. Using our wallet only to view balances, and signing transactions on a separate, completely isolated from the network device. We eliminate the last point with 100% trust. There's no trust here, pure pragmatism. No hidden request when signing a transaction our application is not able to send, because on the computer where it works you have not connected to the internet.What comes to this application, you see (via QR or text), there is ordinary transaction data. What you get on the output, you also see (Hex of the transaction, which will need to be published to the network). Yes, it's not as convenient as the option above, but this is the level of government and military organizations. Your data will not be stolen by either a hacker or the wallet provider company. We sell such a module for offline signing, you can install it on Windows, Mac OS, Linux. As PWA it is also available for mobile devices, someday we will release this as regular mobile applications. In fact, anyone can decompile our .apk application for Android and make sure that the private key is not transferred to the server. For 99% of our users, the solution from point 6 is enough - purchase our wallet with NFC cards. For the rest, who have millions of dollars in their account, we recommend using points 6 and 7 together, that is, additionally purchase a module for offline signature.

If something happens, can I move my wallets to another wallet?

Where should I store my private keys?

I enjoyed reading the technical aspects, where can I get more information on this topic?

Are there solutions for secure cryptocurrency storage for companies?

What is Mitilena Pay?

Who is on the project team?

Does my wallet work without registration?

Is there technical support?

Will it always be possible to use the wallet without registration?

Does your wallet require KYC?

What data is needed for regular registration and use of a cold wallet?

How is your product distributed?

How are cryptocurrency rates updated here?

Does the transaction signing in the web version also happen on my device?

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Professional Cold Crypto Wallet

Supports over 11,000 cryptocurrencies and secure offline transaction signing

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Professional non-custodial (cold) wallet

Frequently asked questions