nix-bitcoin/docs/usage.md

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Updating
---
In your deployment directory, enter the nix shell with `nix-shell` and run the
following to update `nix-bitcoin-release.nix`:
```
update-nix-bitcoin
```
Nodeinfo
---
Run `nodeinfo` to see onion addresses and local addresses for enabled services.
Connect to RTL
---
Normally you would connect to RTL via SSH tunneling with a command like this
```
ssh -L 3000:localhost:3000 root@bitcoin-node
```
Or like this, if you are using `netns-isolation`
```
ssh -L 3000:169.254.1.29:3000 root@bitcoin-node
```
Otherwise, you can access it via Tor Browser at `http://<onion-address>`.
You can find the `<onion-address>` with command `nodeinfo`.
The default password location is `/secrets/rtl-password`.
Connect to spark-wallet
---
### Requirements
* Android phone
* [Orbot](https://guardianproject.info/apps/orbot/) installed from [F-Droid](https://guardianproject.info/fdroid) (recommended) or [Google Play](https://play.google.com/store/apps/details?id=org.torproject.android&hl=en)
* [Spark-wallet](https://github.com/shesek/spark-wallet) installed from [direct download](https://github.com/shesek/spark-wallet/releases) or [Google Play](https://play.google.com/store/apps/details?id=com.spark.wallet)
1. Enable spark-wallet in `configuration.nix`
Change
```
# services.spark-wallet.enable = true;
```
to
```
services.spark-wallet.enable = true;
```
2. Deploy new `configuration.nix`
3. Enable Orbot VPN for spark-wallet
```
Open Orbot app
Turn on "VPN Mode"
Select Gear icon under "Tor-Enabled Apps"
Toggle checkbox under Spark icon
```
4. Get the onion address, access key and QR access code for the spark wallet android app
```
journalctl -eu spark-wallet
```
Note: The qr code might have issues scanning if you have a light terminal theme. Try setting it to dark or highlighting the entire output to invert the colors.
5. Connect to spark-wallet android app
```
Server Settings
Scan QR
Done
```
Connect to LND with Zeus
---
### Requirements
* Android phone
* [Orbot](https://guardianproject.info/apps/orbot/) installed from
[F-Droid](https://guardianproject.info/fdroid) (recommended) or
[Google Play](https://play.google.com/store/apps/details?id=org.torproject.android&hl=en)
* [Zeus](https://zeusln.app/) installed from
[F-Droid](https://f-droid.org/en/packages/app.zeusln.zeus/) (recommended) or
[Google Play](https://play.google.com/store/apps/details?id=app.zeusln.zeus)
1. Enable `restOnionService` in `configuration.nix`
Change
```
# services.lnd.restOnionService.enable = true;
```
to
```
services.lnd.restOnionService.enable = true;
```
2. Deploy new `configuration.nix`
```
nixops deploy -d bitcoin-node
```
3. Run command `lndconnect-rest-onion` (under `operator` user) to create a QR code for
connecting to LND via the REST onion service.
4. Enable Orbot VPN for Zeus
```
Open Orbot app
Turn on "VPN Mode"
Select Gear icon under "Tor-Enabled Apps"
Toggle checkbox under Zeus icon
```
5. Scan the QR code with your Zeus wallet and start sending Satoshis privately
Connect to electrs
---
### Requirements Android
* Android phone
* [Orbot](https://guardianproject.info/apps/orbot/) installed from [F-Droid](https://guardianproject.info/fdroid) (recommended) or [Google Play](https://play.google.com/store/apps/details?id=org.torproject.android&hl=en)
* [Electrum mobile app](https://electrum.org/#home) 4.0.1 and newer installed from [direct download](https://electrum.org/#download) or [Google Play](https://play.google.com/store/apps/details?id=org.electrum.electrum)
### Requirements Desktop
* [Tor](https://www.torproject.org/) installed from [source](https://www.torproject.org/docs/tor-doc-unix.html.en) or [repository](https://www.torproject.org/docs/debian.html.en)
* [Electrum](https://electrum.org/#download) installed
1. Enable electrs in `configuration.nix`
Change
```
# services.electrs.enable = true;
```
to
```
services.electrs.enable = true;
```
2. Deploy new `configuration.nix`
3. Get electrs onion address with format `<onion-address>:<port>`
```
nodeinfo | jq -r .electrs.onion_address
```
4. Connect to electrs
Make sure Tor is running on Desktop or as Orbot on Android.
On Desktop
```
electrum --oneserver -1 -s "<electrs onion address>:t" -p socks5:localhost:9050
```
On Android
```
Three dots in the upper-right-hand corner
Network > Proxy mode: socks5, Host: 127.0.0.1, Port: 9050
Network > Auto-connect: OFF
Network > One-server mode: ON
Network > Server: <electrs onion address>:t
```
Connect to nix-bitcoin node through the SSH onion service
---
1. Get the SSH onion address (excluding the port suffix)
```
ssh operator@bitcoin-node
nodeinfo | jq -r .sshd.onion_address | sed 's/:.*//'
```
2. Create a SSH key
```
ssh-keygen -t ed25519 -f ~/.ssh/id_ed25519
```
3. Place the ed25519 key's fingerprint in the `configuration.nix` `openssh.authorizedKeys.keys` field like so
```
# FIXME: Add your SSH pubkey
services.openssh.enable = true;
users.users.root = {
openssh.authorizedKeys.keys = [ "<contents of ~/.ssh/id_ed25519.pub>" ];
};
```
4. Connect to your nix-bitcoin node's SSH onion service, forwarding a local port to the nix-bitcoin node's SSH server
```
ssh -i ~/.ssh/id_ed25519 -L <random port of your choosing>:localhost:22 root@<SSH onion address>
```
5. Edit your deployment tool's configuration and change the node's address to `localhost` and the ssh port to `<random port of your choosing>`.
If you use krops as described in the [installation tutorial](./install.md), set `target = "localhost:<random port of your choosing>";` in `krops/deploy.nix`.
6. After deploying the new configuration, it will connect through the SSH tunnel you established in step iv. This also allows you to do more complex SSH setups that some deployment tools don't support. An example would be authenticating with [Trezor's SSH agent](https://github.com/romanz/trezor-agent), which provides extra security.
Initialize a Trezor for Bitcoin Core's Hardware Wallet Interface
---
1. Enable Trezor in `configuration.nix`
Change
```
# services.hardware-wallets.trezor = true;
```
to
```
services.hardware-wallets.trezor = true;
```
2. Deploy new `configuration.nix`
3. Check that your nix-bitcoin node recognizes your Trezor
```
ssh operator@bitcoin-node
lsusb
```
Should show something relating to your Trezor
4. If your Trezor has outdated firmware or is not yet initialized: Start your Trezor in bootloader mode
Trezor v1
```
Plug in your Trezor with both buttons depressed
```
Trezor v2
```
Start swiping your finger across your Trezor's touchscreen and plug in the USB cable when your finger is halfway through
```
5. If your Trezor's firmware is outdated: Update your Trezor's firmware
```
trezorctl firmware-update
```
Follow the on-screen instructions
**Caution: This command _will_ wipe your Trezor. If you already store Bitcoin on it, only do this with the recovery seed nearby.**
6. If your Trezor is not yet initialized: Set up your Trezor
```
trezorctl reset-device -p
```
Follow the on-screen instructions
7. Find your Trezor
```
hwi enumerate
hwi -t trezor -d <path from previous command> promptpin
hwi -t trezor -d <path> sendpin <number positions for the PIN as displayed on your device's screen>
hwi enumerate
```
8. Follow Bitcoin Core's instructions on [Using Bitcoin Core with Hardware Wallets](https://github.com/bitcoin-core/HWI/blob/master/docs/bitcoin-core-usage.md) to use your Trezor with `bitcoin-cli` on your nix-bitcoin node
JoinMarket
---
## Diff to regular JoinMarket usage
For clarity reasons, nix-bitcoin renames all scripts to `jm-*` without `.py`, for
example `wallet-tool.py` becomes `jm-wallet-tool`. The rest of this section
details nix-bitcoin specific workflows for JoinMarket.
## Wallets
By default, a wallet is automatically generated at service startup.
It's stored at `/var/lib/joinmarket/wallets/wallet.jmdat`, and its mnmenoic recovery
seed phrase is stored at `/var/lib/joinmarket/jm-wallet-seed`.
A missing wallet file is automatically recreated if the seed file is still present.
If you want to manually initialize your wallet instead, follow these steps:
1. Enable JoinMarket in your node configuration
```
services.joinmarket.enable = true;
```
2. Move the automatically generated `wallet.jmdat`
```console
mv /var/lib/joinmarket/wallet.jmdat /var/lib/joinmarket/bak.jmdat
```
3. Generate wallet on your node
```console
jm-wallet-tool generate
```
Follow the on-screen instructions and write down your seed.
In order to use nix-bitcoin's `joinmarket.yieldgenerator`, use the password
from `/secrets/jm-wallet-password` and use the suggested default wallet name
`wallet.jmdat`. If you want to use your own `jm-wallet-password`, simply
replace the password string in your local secrets directory.
## Run the tumbler
The tumbler needs to be able to run in the background for a long time, use screen
to run it accross SSH sessions. You can also use tmux in the same fashion.
1. Add screen to your `environment.systemPackages`, for example
```
environment.systemPackages = with pkgs; [
vim
screen
];
```
2. Start the screen session
```console
screen -S "tumbler"
```
3. Start the tumbler
Example: Tumbling into your wallet after buying from an exchange to improve privacy:
```console
jm-tumbler wallet.jmdat <addr1> <addr2> <addr3>
```
After tumbling your bitcoin end up in these three addresses. You can now
spend them without the exchange collecting data on your purchases.
Get more information [here](https://github.com/JoinMarket-Org/joinmarket-clientserver/blob/master/docs/tumblerguide.md)
4. Detach the screen session to leave the tumbler running in the background
```
Ctrl-a d or Ctrl-a Ctrl-d
```
5. Re-attach to the screen session
```console
screen -r tumbler
```
6. End screen session
Type exit when tumbler is done
```console
exit
```
## Run a "maker" or "yield generator"
The maker/yield generator in nix-bitcoin is implemented using a systemd service.
See [here](https://github.com/JoinMarket-Org/joinmarket-clientserver/blob/master/docs/YIELDGENERATOR.md) for more yield generator information.
1. Enable yield generator bot in your node configuration
```
services.joinmarket.yieldgenerator = {
enable = true;
# Optional: Add custom parameters
txfee = 200;
cjfee_a = 300;
};
'';
```
2. Check service status
```console
systemctl status joinmarket-yieldgenerator
```
3. Profit
clightning
---
## Plugins
There are a number of [plugins](https://github.com/lightningd/plugins) available for clightning. Currently `nix-bitcoin` supports:
- helpme
- monitor
- prometheus
- rebalance
- summary
- zmq
You can activate and configure these plugins like so:
```nix
services.clightning = {
enable = true;
plugins = {
prometheus.enable = true;
prometheus.listen = "0.0.0.0:9900";
};
};
```
Please have a look at the module for a plugin (e.g. [prometheus.nix](../modules/clightning-plugins/prometheus.nix)) to learn its configuration options.