nix-bitcoin/docs/usage.md
2020-09-22 17:32:08 +00:00

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Markdown

Updating
---
In your deployment directory, enter the nix shell with `nix-shell` and run
```
fetch-release > nix-bitcoin-release.nix
```
Nodeinfo
---
Run `nodeinfo` to see your onion addresses for the webindex, spark, etc. if they are enabled.
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`
```
nixops deploy -d bitcoin-node
```
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 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`
```
nixops deploy -d bitcoin-node
```
3. Get electrs onion address
```
nodeinfo | grep 'ELECTRS_ONION'
```
4. Connect to electrs
Make sure Tor is running on Desktop or as Orbot on Android.
On Desktop
```
electrum --oneserver -1 -s "<ELECTRS_ONION>:50001: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>:50001:t
```
Connect to nix-bitcoin node through ssh Tor Hidden Service
---
1. Run `nodeinfo` on your nix-bitcoin node and note the `SSHD_ONION`
```
nixops ssh operator@bitcoin-node
nodeinfo | grep 'SSHD_ONION'
```
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 Tor Hidden 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@[your SSHD_ONION]
```
5. Edit your `network-nixos.nix` to look like this
```
{
bitcoin-node =
{ config, pkgs, ... }:
{ deployment.targetHost = "127.0.0.1";
deployment.targetPort = [random port of your choosing];
};
}
```
6. Now you can run `nixops deploy -d bitcoin-node` and it will connect through the ssh tunnel you established in step iv. This also allows you to do more complex ssh setups that `nixops ssh` doesn'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`
```
nixops deploy -d bitcoin-node
```
3. Check that your nix-bitcoin node recognizes your Trezor
```
nixops 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.
## Initialize JoinMarket Wallet
By default, nix-bitcoin's JoinMarket module automatically generates a wallet for
you. If however, you want to manually initialize your wallet, 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"
```
2. 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)
3. Detach the screen session to leave the tumbler running in the background
```
Ctrl-a d or Ctrl-a Ctrl-d
```
4. Re-attach to the screen session
```console
screen -r tumbler
```
5. 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
services.joinmarket.yieldgenerator.customParameters = ''
txfee = 200
cjfee_a = 300
'';
```
2. Check service status
```console
systemctl status joinmarket-yieldgenerator
```
3. Profit