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14 votes
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How can Trezor update firmware but never receive malware?

You actually can't update all the firmware. In particular, the portion of the firmware that implements the security logic cannot be modified, it's burned in for good. If you want to take full control ...
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14 votes

Is it safe to use a second-hand Trezor (like from ebay)?

If you update the firmware you are probably safe, but why take the chance? The Trezor itself (or even the included USB cable https://www.wired.com/2014/07/usb-security/) could have been corrupted/...
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8 votes
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How do I use the new GPG signing feature with my Trezor?

GPG Keys "TREZOR can now securely generate GPG keys for signing of emails or documents (using the NIST256P1 and Ed25519 curves). Currently, this update does not allow for GPG decryption, a feature ...
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6 votes

If I lose a Trezor then how does the replacement get access to the same wallet?

Trezor implements BIP32/BIP39 (hierarchical deterministic wallet and mnemonic encoded seeds, respectively). The mnemonic (12 words) is just a way of encoding a hex seed like ...
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6 votes

How can Trezor update firmware but never receive malware?

I emailed them about this: As for the possibility to get the seed out of the TREZOR: Official firmware doesn't have any support for exporting the seed Official firmware is opensource at github and ...
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  • 28.7k
6 votes
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What is the difference between PSBT support in Coldcard and Trezor?

The Coldcard handles PSBT directly and natively. A PSBT can given to the device by writing it to a microSD card and inserting the card into the device. It will be able to load the PSBT and process it ...
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  • 62.3k
5 votes
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Can you ever view your private keys on the TREZOR?

I don't think you can as the Trezor (and every other hardware wallet) does not expose your private keys to the computer it is connected to. This is how you can still securely spend your Bitcoin even ...
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  • 62.3k
5 votes

How do I use the new GPG signing feature with my Trezor?

(trezor-agent developer here...) Please take a look at the latest trezor-agent version here. I'd be happy to fix any issue with the documentation, and extend it with more examples to make it more ...
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5 votes
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How does Trezor's wallet recovery work if the private key never leaves the device?

The Trezor generates a seed offline on your device. Neither the private key nor this seed are ever shared with SatoshiLabs. In fact, you're in sole control of your private key: when you first set up ...
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  • 64.5k
5 votes
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Migrate old Bitcoin Core wallet to Trezor

Do I have such a recovery seed? No. Bitcoin Core does not use mnemonics nor is the seed exportable. Is there any other way I can migrate my wallet to the trezor? (Other than creating a new wallet ...
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  • 62.3k
4 votes

If I lose a Trezor then how does the replacement get access to the same wallet?

BIP 32/39 allows key portability across different wallet implementations. To complement the "Wizard of Ozzie" answer above, a different method (C++ based, not JavaScript based code) is ...
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  • 2,927
4 votes

What is it about a Trezor that means it can't be infected by malware?

Trezor is a relatively simple, specialized hardware device. It does not run any OS, just a small program specifically developed for signing Bitcoin transactions and managing the keys. Thus, the attack ...
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  • 1,394
4 votes
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Would I be able to recover coins if Trezor went out of business?

Yes. Trezor uses BIP39 and is compatible with any other wallet that would. You can in fact import your seed into electrum, though this to some extent defeats the purpose of having a hardware wallet.
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  • 76
4 votes

How does Trezor's wallet recovery work if the private key never leaves the device?

The Trezor wallet is a Hierarchical Deterministic wallet. This means that the entire wallet is derived from the seed. The seed is encoded as the 24 word mnemonic which is what you have to backup. To ...
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  • 62.3k
4 votes
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If hardware wallet provider disappears, can I still manage my coins?

I understand these wallets only work with provider's mobile app, online interface or their computer software, correct ? No. Some of the most popular hardware wallets are supported by third party ...
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  • 62.3k
3 votes

Online exchange bitcoin balance to hardware wallet

Generate an address on the hardware wallet. Then log in to your web wallet account and send all your coins to that address. That's all.
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3 votes
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Can you deposit to an unplugged Trezor?

Yes. When you initialize your Trezor, it generates a private and a public key. Private key never leaves the device (that's the core value proposition). That means you can't sign transactions (spend ...
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3 votes
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What is it about a Trezor that means it can't be infected by malware?

You simply can't add, insert or install software or any executable stuff into a Trezor. Due to the way the Trezor is set up, it runs fully autonomically. The only thing that goes into the Trezor is ...
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3 votes
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Can I run Trezor Wallet against my own local node on OSX?

Bitcore fork from SatoshiLabs is indeed available only for 64-bit linux. You can try to build the necessary binaries yourself and then update the npm install scripts in bitcore, but that is very hard....
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  • 2,545
3 votes
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What happens when a hardware wallet, like Trezor, suffers a hardware damage?

For Trezor specifically, just check their website for details. Essentially, you need to have: a new or wiped Trezor wallet. your Trezor recovery card, filled out correctly. a computer with the ...
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3 votes
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How To Traverse Bitcoin Addresses in HD Wallet

Most (but not all) wallets will follow what is specified in BIPs 32, 44, and 49. BIP 32 defines what derivation paths are and what they mean. It is the standard for deriving all of the keys in a HD ...
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  • 62.3k
3 votes

Derive LTC Segwit (M-Address) private key from Trezor

When you are deriving addresses, you are actually deriving private or public keys from which an address is derived. However addresses are actually an encoding of what type of script to use in the ...
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  • 62.3k
3 votes
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mnemonic pass phrase generation in wallets / hardware wallets - security flaw?

Wouldn't it be saver to generate a mnemonic passphrase manually by just taking random words from a lookup table? No, it would not be. This method may even be insecure if you are actually doing it ...
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  • 62.3k
3 votes
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24 Word Mnemonic Seed Phrase for Ledger Nano S usable on Trezor?

You can use them, but you need to ensure that the hardware wallets use the same address derivation paths. For the hardware wallets you mentioned (Trezor and Ledger) both of them use the BIP 39/BIP 44 ...
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  • 6,978
2 votes
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Can a Trezor seed be used in any other HD wallet?

Yes, Trezor uses the BIP0032 standard to derive your keys from the seed. That means you can use any BIP0032-compatible client for recovery, or you can even use them simultaneously (but be aware of the ...
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  • 1,394
2 votes

I Want To Confirm That My Bitcoins Are Being Held In New Wallet

You can check on 3rd-party pages whether they have knowledge of your transaction: E.g. Blockexplorer shows that address 1HyETxKBZshfu2cdjEWMYntDFabFXsrHe2 received just short of 35 BTC last week. If ...
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  • 64.5k
2 votes
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Is there a mobile wallet that works with a Trezor?

Is there a mobile wallet that support using a Trezor hardware wallet to spend coins? You first need an OTG cable and a phone that supports acting as a USB host. Trezor has not released a mobile ...
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  • 126
2 votes
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How to view Bitcoin Cash (BCC) on Trezor Wallet

BCH (Bcash) as Trezor refer to it, is now available on https://beta-wallet.trezor.io after applying 1.5.1 firmware upgrade. Go to https://beta-wallet.trezor.io You can also use tool to claim your BCC,...
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2 votes

Trezor Firmware update just hangs indefinitely

Try it again. If it does not work, contact support and ask for a replacement unit.
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2 votes

Can you ever view your private keys on the TREZOR?

Generating, and thus exposing, the private key using the seed words would be very foolish. It would be the same as not using a TREZOR at all. You NEVER want the private keys be other than safely ...
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