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Fuego’s time deposit system is built directly into the protocol, not a smart contract or external service. You lock a minimum of 800 XFG for a fixed term of 16,440 blocks (approximately 3 months at the 480-second block target), and the network pays you interest when the term matures. No third party ever holds your funds. You can create a deposit through the walletd JSON-RPC API or through the Elderfier menu in the Terminal User Interface (TUI).

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Parameters at a glance

ParameterValue
Minimum deposit amount800 XFG
Term length16,440 blocks (~3 months)
Transaction fee0.008 XFG
Block target480 seconds
Deposits cannot be withdrawn early. Once you submit a createDeposit transaction, the locked XFG is inaccessible until the full 16,440-block term has elapsed. Do not deposit funds you may need before the term ends.

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Create a deposit via the wallet RPC

1

Start walletd and confirm sync

The walletd daemon must be running and fully synced before you create a deposit. Start it and wait for the sync indicator to reach the current chain height:
./walletd --wallet-file deposits.wallet --daemon-host 127.0.0.1 --daemon-port 18180 --bind-port 8070
2

Look up your source address

Call getAddresses to retrieve the address you want to deposit from:
curl -s -X POST http://127.0.0.1:8070/json_rpc \
  -H 'Content-Type: application/json' \
  -d '{"jsonrpc":"2.0","method":"getAddresses","params":{},"id":1}'
Note the fire… address you want to use as sourceAddress in the next step.
3

Submit the createDeposit request

Send the JSON-RPC call with your amount in atomic units (1 XFG = 10,000,000 atomic units, so 800 XFG = 8,000,000,000):
{
  "jsonrpc": "2.0",
  "method": "createDeposit",
  "params": {
    "amount": 8000000000,
    "term": 16440,
    "sourceAddress": "fireXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"
  },
  "id": 1
}
A successful response returns a transactionHash:
{
  "jsonrpc": "2.0",
  "result": {
    "transactionHash": "a1b2c3d4e5f6..."
  },
  "id": 1
}
Save this hash — you will need the depositId from getDeposit to withdraw later.
4

Monitor the deposit balance

Call getBalance to watch the deposit move from locked to unlocked as the term progresses:
curl -s -X POST http://127.0.0.1:8070/json_rpc \
  -H 'Content-Type: application/json' \
  -d '{"jsonrpc":"2.0","method":"getBalance","params":{"address":"fireXXX..."},"id":1}'
The getBalance response includes four fields: availableBalance, lockedAmount, lockedDepositBalance, and unlockedDepositBalance. While your deposit term is active, the principal sits in lockedDepositBalance. Once the term completes, it moves to unlockedDepositBalance along with the earned interest. You must call withdrawDeposit to return the funds to your spendable balance.
5

Withdraw after the term ends

Once the term has elapsed and unlockedDepositBalance is non-zero, withdraw using the deposit’s ID:
{
  "jsonrpc": "2.0",
  "method": "withdrawDeposit",
  "params": {
    "depositId": 0
  },
  "id": 1
}
A successful response returns the transactionHash of the withdrawal, and the principal plus interest will appear in your availableBalance.

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Create a deposit via the TUI

If you prefer a graphical terminal interface, the Fuego TUI provides the same functionality through the Elderfier menu:
  1. Launch the TUI: ./tui/build/fuego-tui
  2. Navigate to the Elderfier section using the arrow keys or j/k.
  3. Select Create Deposit and enter your amount and confirm the 16,440-block term.
  4. Confirm the transaction to broadcast it.
The TUI displays locked and unlocked deposit balances on the overview screen and will notify you when the term expires.

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Burn2Mint

Fuego also supports a separate Burn2Mint mechanism, available through the TUI, which allows you to burn XFG in exchange for a mint reward. Burn2Mint operates independently from the time deposit system described above. Access it through the dedicated Burn2Mint menu in the TUI.