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A Fuego wallet is not an account held by a third party — it is a set of cryptographic keys that only you control. Your keys prove ownership of your XFG on the blockchain, and without them, no one (including the Fuego developers) can access your funds. Understanding how these keys work helps you keep your coins safe and use the wallet software with confidence.

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Spend key and view key

Every Fuego address is backed by two key pairs, each consisting of a public key and a private key:
  • Spend key — authorizes outgoing transactions. Anyone with your private spend key can send your funds. Guard it carefully.
  • View key — allows read-only scanning of the blockchain for incoming transactions addressed to you. You can share your private view key with a trusted auditor without giving them the ability to spend.
Both keys are generated together when you create a new wallet. They are stored in your wallet file and protected by whatever password you set.

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The “fire” address format

All Fuego addresses start with the prefix fire, derived from the base-58 address prefix value 1753191 encoded in the protocol. An address looks like: 
fireXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
This prefix makes it immediately obvious you are dealing with a Fuego address rather than one from another network.

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Integrated addresses

An integrated address combines a standard Fuego address with a payment ID into a single, self-contained string. Payment IDs are used by exchanges and merchants to identify which customer sent a particular deposit. Rather than asking senders to attach a separate payment ID to their transaction, you can share one integrated address and the payment ID is included automatically. If you receive a payment request from an exchange, it will often be an integrated address — you do not need to do anything extra.

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Mnemonic seed

When you create a wallet, the software can generate a mnemonic seed: a sequence of 25 words that encodes your private keys in a human-readable form. Writing down this seed and storing it securely is the most reliable way to back up your wallet. If you ever lose your wallet file or forget your password, the mnemonic seed lets you fully restore your wallet and all its funds on any compatible software.

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Wallet files

The wallet software saves your keys to disk in a file with the .keys extension. This file is encrypted with your wallet password. Keep a copy of this file in a secure location, but remember that the file alone is not sufficient if you forget the password — the mnemonic seed is a more durable backup.

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Unlock windows

  • Regular outputs — after receiving XFG, you must wait 10 blocks before you can spend those outputs. At the 8-minute block time, this is roughly 80 minutes.
  • Mined coins — block rewards take longer to mature. Coins you mine are locked for 60 blocks (approximately 8 hours) before they become spendable.
Back up your private spend key and mnemonic seed before you store any XFG in your wallet. Write them down on paper and keep copies in more than one secure location.
If you lose your private spend key and have no mnemonic seed backup, your funds are permanently inaccessible. There is no recovery option — no support team can restore them for you.