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What is Monero and how does it work with Trezor?
Monero (XMR) is an open-source cryptocurrency built for private payments. You can use it on Trezor Safe 7, Safe 5, Safe 3, and Model T through third-party wallet apps. Trezor Suite doesn't support Monero.
Every Monero transaction hides the sender, the recipient, and the amount.
Which wallet apps work with Monero on Trezor?
Your options depend on your Trezor model and whether you use a phone or a computer:
| App | Platform | Trezor devices |
|---|---|---|
| Cake Wallet | iOS | Safe 7 |
| Cake Wallet | Android | Safe 7, Safe 5, Safe 3, Model T |
| Monero GUI and Monero CLI | Desktop | Safe 5, Safe 3, Model T |
Trezor Model One doesn't support Monero.
Exodus no longer supports Monero. If you used Monero with Exodus, connect your Trezor to one of the apps above to keep using your Monero.
For setup steps, see Use Monero with Monero GUI or Use Monero with Monero CLI.
How does Trezor derive your Monero keys?
Trezor uses SLIP-0010, an open standard, to derive your Monero private keys from your wallet backup. Your private spend key stays on your Trezor. Not every Monero wallet supports SLIP-0010.
You may not be able to recover your Monero by entering your Trezor wallet backup into a hardware or software wallet from another brand. Other wallets can derive Monero keys a different way and won't find your funds.
You can always recover your Monero on another Trezor. Enter your wallet backup on any Trezor that supports Monero, and your funds are there.
How does Trezor sign Monero transactions?
Trezor follows Monero's cold-wallet signing protocol and supports Bulletproofs. Most Monero transactions have 2 outputs, and for these your Trezor calculates the Bulletproofs itself. For more than 2 outputs, the wallet app calculates them and your Trezor checks the result.
How does Monero keep transactions private?
Monero hides the sender, the recipient, and the amount of every transaction. Each is hidden by a different technology:
- Ring signatures hide the sender. A ring signature can come from any member of a group of keys, and no one can tell which key signed.
- Stealth addresses hide the recipient. The sender creates a new one-time address for every payment, so payments to the same published address can't be linked on the blockchain.
- RingCT (Ring Confidential Transactions) hides the amount. Since January 2017, only the sender and the recipient can see how much was sent. Bulletproofs keep these hidden amounts verifiable. A range proof lets anyone check that a hidden amount falls within a valid range without seeing the amount. Bulletproofs make range proofs much smaller, which cuts transaction size, verification time, and fees.
Monero's privacy design comes from CryptoNote, a protocol published in 2013 under the pseudonym Nicolas van Saberhagen. Monero started as a fork of Bytecoin, the first cryptocurrency built on CryptoNote.
Does Monero have a supply cap?
No. Unlike Bitcoin, Monero has no maximum supply. Tail emission began at the end of May 2022, and since then every block pays a fixed reward of 0.6 XMR, so block rewards never drop to zero.