**The RaspiBlitz is a do-it-yourself Lightning Node (LND and/or c-lightning) running together with a Bitcoin-Fullnode on a RaspberryPi (1TB SSD) and a nice display for easy setup & monitoring.**
RaspiBlitz is mainly targeted for learning how to run your own node decentralized from home - because: Not your Node, Not your Rules. Discover & develop the growing ecosystem of the Lightning Network by becoming a full part of it. Build it as part of a [workshop](WORKSHOP.md) or as a weekend project yourself.
The RaspiBlitz is optimized for being setup during a workshop at a hackday or conference (see [detailed workshop tutorial](WORKSHOP.md)). When it comes fully assembled with an up-to-date synced blockchain, it's possible to have it ready in about 2 to 3 hours.
If you start at home ordering the parts from Amazon (see shopping list below) then it's a weekend project with a lot of downloading and syncing time where you can do other stuff while checking on the progress from time to time.
If you already run a Umbrel or myNode you have basically all the hardware needed and you can make the [Migration to RaspiBlitz from Umbrel/myNode](#make-a-raspiblitz-out-of-your-umbrel-or-mynode) under one hour.
*Please try to use the exact hardware models that are recommended in the shopping lists. We have had multiple reports where, for example, other SSD or SSD cases/controllers lead to problems. The idea of the shopping lists is to provide you the best tested hardware components that work together - improvement recommendations are always welcome.*
*You can even pay for your RaspiBlitz Amazon Shopping with Bitcoin & Lightning through [Bitrefill](https://blog.bitrefill.com/its-here-buy-amazon-vouchers-with-bitcoin-on-bitrefill-bb2a4449724a).*
|Pros|Make Blitz accessible to everyone|You don't need to trust us, build from your own forked repository|
|Cons|You have to trust the mantainer image binaries|You need to read the build_sdcard.sh parameters in order for the customization to suit your needs|
|Instructions|[Download 1.7.1RC2 image](https://raspiblitz.fulmo.org/images/raspiblitz-v1.7.1rc2-2021-09-23.img.gz) and [Flash the sd card](README.md#write-the-sd-card-image-to-your-sd-card)|[Build your own sd card image](#build-the-sd-card-image)|
|Verify what?|[Signature file - only for final release]() and [verify the Sig](FAQ.md#how-to-verify-the-sd-card-image-after-download) OR SHA-256 (below)|All of the code, don't trust, verify|
You need to write the downloaded SD card image (the img.gz-file) to your SD card (16GB minimum) - you can use the very easy tool Balena Etcher for this: https://www.balena.io/etcher/. It's available for Win, Mac & Linux.
* [I don't have a LAN port on my Laptop - how to connect to my RaspiBlitz?](FAQ.md#i-dont-have-a-lan-port-on-my-laptop---how-do-i-connect-to-my-raspiblitz)
* [Is it possible to connect the Blitz over Wifi instead of using a LAN cable?](FAQ.md#is-it-possible-to-connect-the-blitz-over-wifi-instead-of-using-a-lan-cable)
Now open up a terminal ([OSX](https://www.youtube.com/watch?v=5XgBd6rjuDQ)/[Win10](https://www.howtogeek.com/336775/how-to-enable-and-use-windows-10s-built-in-ssh-commands/)) and connect through SSH with the command displayed by the RaspiBlitz:
If you run into a problem or you have still a question, follow the steps below to get support. Also check the [setup documentation](#setup-process-detailed-documentation) for details.
2. If you have a hardware problem, please check that your hardware parts are exactly the parts recommended in the shopping list above. Different screens or even SSD-casings can cause problems.
3. Please determine if your problem/question is about RaspiBlitz or for example with LND or c-lightning. For example if you can't route a payment or get an error when opening a channel that is an LND/c-lightning question/problem and is best answered by the [LND dev community](https://dev.lightning.community) or the [c-lightning documentation](https://lightning.readthedocs.io/)
4. Go to the GitHub issues of the RaspiBlitz: https://github.com/rootzoll/raspiblitz/issues Do a search there. Also check closed issues by removing 'is:open' from the filter/search-box.
5. If you haven't found an answer yet, open a new issue on the RaspiBlitz GitHub. You may have to register an account with GitHub for this. If it's a bug with the RaspiBlitz, please add (copy+paste) a Debug Report to your issue (see [FAQ](FAQ.md) for how to generate them) and/or add some screenshots/photos so the community gets more insight into your problem.
### Groups
There are plenty off rooms you can find Raspiblitz users that can help you:
Everytime you start with a fresh sd card image you will get offerered different options. For example this is also the point where you can import a Migration file from an older RaspiBlitz - read about Migration [further down](README.md#import-a-migration-file). But because you are setting up a brand new RaspiBlitz you will choose here `FRESHSETUP`.
Then you will be asked what todo with the connected harddrive/ssd.
If there is already a blockchain on your hardrive/ssd - you will be asked if you want to use this pre-synced/validated data or if its OK to delete it. If there is no blockchain data - this question will be skipped.
Finally you have to agree that all (other) data will get deleted on the harddrive/ssd (except the blockchain if you choosed that before). This might take some seconds.
Then you can choose which Lightning implementation you want to run on top of your Bitcoin Fullnode. RaspiBlitz started with `LND` from Lightning Labs which is used by most other RaspberryPi lightning nodes and works with most additional apps. But you can now also choose `CL` for c-lightning by Blockstream which is a good choice for already more experienced node operators & lightning developers that want to use the highly customizable plug-in structure that c-lightning offers.
Its also possible to use both in parallel on your RaspiBlitz later on - just pick one to start with or choose `NONE` is your only interested in running a Fullnode without Lightning.
If you choosed one of the lightning implementations you will now be asked if you want to start a `NEW` wallet/lightning node or if you had an `OLD` lightning wallet/node that you want to re-create.
Normally you just chose `NEW` here .. but to recover an old wallet you have the following options if you choose `OLD`:
##### LNDRESCUE LND tar.gz-Backupfile (BEST)
Choose this option if you have made a complete backup of the LND or c-lightning data and have a tar.gz file starting with the word 'lnd-rescue' or 'cl-rescue' available. It will recover all your on-chain funds and open channels you had. But you have to make sure that the rescue backup you have is really the latest version - otherwise you might lose channel funds.
*If you have tar.gz file that starts with 'raspiblitz', that's a migration file. That also includes your old LND/c-lightning wallet, but you import that file at the beginning of the setup process with 'FROMBACKUP - Upload Migration Backup' instead choosing FRESHSETUP*
##### SEED+SCB Words Seed & channel.backup file (OK)
Next best option is, if you have the channel.backup file and the word list seed. This is the best chance to recover the on-chain funds you had in open channels. But all channels you had open before will be closed during this procedure.
##### ONLY SEED Only Seed Word List (Fallback)
If you just have the word list (RaspiBlitz 1.1 and older) you can at least try to recover your on-chain funds. Recovery of channel funds is not very likely in this scenario.
But normally you are setting up a new node - so simply choose `NEW` in the menu.
Finally you have to set 3 passwords called A, B & C ... please choose here single strings (without spaces and special characters) that are at least 8 chars long.
You can use this [RaspiBlitz Recovery Sheet (PDF)](https://github.com/rootzoll/raspiblitz/raw/v1.7/home.admin/assets/RaspiBlitzRecoverySheet.pdf) to write those passwords down for save storage and also use it later on for your Seed Words.
*The password A,B,C idea is based on the [RaspiBolt Guide Preparations](https://stadicus.github.io/RaspiBolt/raspibolt_10_preparations.html#write-down-your-passwords) - check out for more background.*
First Password A is requested - this is the new password which has to be used for every SSH login for now. It's also set for the existing users: admin, root, bitcoin & pi.
*The bitcoin and lightning services will later run in the background (as daemon) and use the separate user “bitcoin” for security reasons. This user does not have admin rights and cannot change the system configuration.*
Then enter the Password B - this is internally used for the bitcoin RPC interface. But also as login for additional apps like the RTL-WebGUI or the Blockexplorer:
And finally enter the Password C - this is used to encrypt/lock the lightning wallet on the harddrive/ssd and is used by LND. Everytime a lightning node is started/rebooted LND needs load the wallet into memory to work with and ask you for the Password C to "unlock" the wallet.
Once the basic setup ran thru you lightning node & wallet was created and you get presented the important backup seed words which you need to write down on paper and store them in a secure location. You will need to confirm that you wrote the seed words down before you can continue.
WRITE YOUR PERSONAL WORDS DOWN before you continue - you will need them to recover funds in case of failing hardware etc. If you just want to try/experiment with the RaspiBlitz, at least take a photo with your smartphone just in case. If you plan to keep your RaspiBlitz running, store this word list offline or in a password safe.
You can use this [RaspiBlitz Recovery Sheet (PDF)](https://github.com/rootzoll/raspiblitz/raw/v1.7/home.admin/assets/RaspiBlitzRecoverySheet.pdf) to write down those seed words for save storage.
If you dont had a full copy of the blockchain pre-synced/validated on your harddrive/ssd then you will now be asked how you want to get your copy of the blockchain .. there are two basic options here:
With the new RaspberryPi 4 (with SSD & min 2GB RAM) this is the best way to go. It will take around 3-6 days to sync & validate directly with the bitcoin network. With this option, you have done it the original `don't trust, verify` way.
*For the old RaspberryPi 3 this is not recommended. A RaspberryPi 3 has a very low power CPU and syncing+validating the blockchain directly with the peer2peer network can take multiple weeks - that's why for a RP3 you should choose the COPY option .*
If you have a friend that is already running a synced RaspiBlitz or you have a laptop with enough free space on the harddrive that can download & validate the Blockchain much faster you can also choose the `COPY` option. You can then delete existing blockchain your RaspiBlitz already started syncing for you.
To copy from another RaspiBlitz choose `BLITZ` and follow the instructions. Know that the other Blitz will be offline to the lightning network during the copy that will take multiple hours.
To copy from your laptop/computer (`WINDOWNS`, `MACOS`&`LINUX` options) you first need to download & validate the blockchain on your own computer/laptop. Todo so install latest bitcoin-core (0.18.1 or higher) from [bitcoin.org](https://bitcoin.org/en/download) and keep it running until blockchain is synced (will need around 400 GB). Then under the `COPY` option choose the Operating System. The copy will be done over the local network by SCP (SSH file transfer) - follow the instructions given in the dialogs. It's advised to keep a backup of the bitcoin-core & the blockchain data (e.g. on your laptop) in case you need to re-setup the RaspiBlitz.
More details: [I have the full blockchain on another computer. How do I copy it to the RaspiBlitz?](FAQ.md#i-have-the-full-blockchain-on-another-computer-how-do-i-copy-it-to-the-raspiblitz)
Just wait a bit and then the SSH command to login again. Dont forget to use this time your password A ... which is always for password for system login.
If you run LND you will be asked to unlock your wallet - thats always your password C. BTW under `SETTINGS` in the main menu you can activate the Auto-Unlock if you prefer.
Remeber that now your RaspiBlitz might need a longer time to sync/validate the blockchain - this can be multiple days. In the beginnig you might see fast progress but its normal that this gets slower later on. Also your RaspberryPi CPU might get quite hot ... thats also OK during this inital sync time - the RaspberryPi has its own protection against overheating and will push thru.
If you would prefer to do this from a web browser with a dashboard UI, instead of an SSH terminal, go to `SERVICES`, activate the `RTL Webinterface`, and after install you will find a new menu option for RTL in the SSH main menu - it will give you all the information so that you can now open the RTL Webinterface in your browser.
*BTW always love seeing photos of new RaspBlitzes added to the network on twitter @rootzoll - also there is a [RaspiBlitz Donation Page](https://tallyco.in/s/r5lx23/), why not try to send some satoshis there with your new RaspiBlitz :D *
These are the features available through the RaspiBlitz SSH menus. They have the goal to offer some basic/fallback functionality & configurations. More complex or user-friendly tasks are best to be done with wallets, apps and scripts you connect to your Lightning Node via [APIs](#interface--apis) - because you have a full Bitcoin- and Lightning-Node on the RaspiBlitz.
This is the screen that gets displayed on the LCD/display. It's useful to call in a remote situation from SSH if you don't have your RaspiBlitz next to you, or if you want to copy+paste your nodeID or make a screenshot.
Under `LND/c-lightning Wallet options` you find some basic steps to manage your Lightning node. Those are very simplified in the RaspiBlitz SSH menu for the reason of learning. For more advanced management of your Lightning node see additional apps under `SERVICES`.
Before you can open channels with other nodes you need to put some coins in your on-chain wallet (managed by your lightning sofware). Use this option to generate an address to send funds to.
*Reminder: RaspiBlitz is still experimental software. With funding your lightning node you accept the risk of losing funds. So just play with small amounts - something in the area of 20 EUR/USD should be enough to make your first experiences. Also, it's a good privacy practice to [coinjoin your coins](https://bitcoin-only.com/privacy) before sending them to any Lightning Network wallet.*
You can fund it multiple times - starting with small amounts first to test. Your lightning node will always generate a different address, but all funds you send will get into the same LND on-chain wallet.
Opening a channel with a peer is just optional. Having another node as peer helps your node to receive information about the lightning network through the gossip protocol. It will help your node to find better routes through the network.
Find interesting nodes to open channels with through online directories like [1ML.com](https://1ml.com/) or join the RaspiBlitz NodeManager telegram group to meet people to open channels with: https://t.me/raspiblitz
Bear in mind that this option will open a public channel that can be seen by everyone in the network. This is good if you want to route payments. If your intention is to use it privately only, you must go to the command line and open the channel with the -private option.
*This is just a very basic shell script. For more usability, try the RTL Webinterface (under Services) or connect a (mobile) wallet with your RaspiBlitz.*
*This is just a very basic shell script. For more usability try the RTL Webinterface (under Services) or connect a (mobile) wallet with your RaspiBlitz.*
If you are looking for something to test payments with Lightning ... why not [donate some satoshis to RaspiBlitz development](https://tallyco.in/s/r5lx23/)? Thanks :)
*This is just a very basic shell script. For more usability try the RTL Webinterface (under Services) or connect a (mobile) wallet with your RaspiBlitz.*
Here you can change the alias name of your node as it is shown as part of the Lightning network.
##### CLOSE ALL: Closing all open Channels
*This option is just available if you have channels open.*
With this feature you can close down all open channels and get the funds locked up in those channels back to your on-chain wallet.
You may choose to force-close some channels where the channel partner is no longer reachable. Keep in mind that when you force-close a channel, it can take a much longer time until your funds are available again through your on-chain wallet.
##### CASHOUT: Remove Funds from on-chain Wallet
Use if you want to remove all funds from the RaspiBlitz.
* By using a Tor address it's possible to move the node to a different IPv4 address and keep the existing (i.e. previously opened and funded) channels functional.
It is very convenient to learn and test to play around in a "sandbox" environment. RaspiBlitz allows this through activating "Testnet & Signet" that run in parallel to the "Mainnet".
This needs to switched on to see the sub-settings options for LND. If switched on it means the LND lightning node implementation is installed and running on your RaspiBlitz - it can run in parallel to c-lightning. If activated you will find an additional option in the SSH Main Menu that offers you more options to operate the LND node. Also under `SERVICES` some apps might just be available if LND is activated.
The channels autopilot feature of LND allows to automatically uses around half of your on-chain funds (if available) to open new channels with other lightning nodes.
Channels autopilot is very useful to get started transacting swiftly if you're a newbie as the channels are generated for you.
It is very likely that after a while, once you will have a hang of the concept of channels and how they work that you will not need channels autopilot anymore.
Beware that presently toggling the Channels Autopilot setting will trigger a reboot of your Raspiblitz. It is not a problem per se, just a bit of waste of time [Improvement request #1953](https://github.com/rootzoll/raspiblitz/issues/1953)
Keysend is a feature of LND that allows your node to accept payments without having created an invoice first. This needs to be activated, for example, if you want to use your nodes for experimental messaging over the Lightning Network (see RaspiBlitz MOBILE apps like SendMany).
Not everybody is acting friendly in the Lightning network. Circuitbreaker is a background service you cann activate that acts similar to a firewall to protect your now better. For details see: https://github.com/lightningequipment/circuitbreaker/blob/master/README.md
It can be activated under "Services" -> "Auto-unlock LND". We recommend that it be turned on, when DynamicDNS is used. If there is a public IP change on your router, LND restarts automatically, and without Auto-Unlock it will stay inactive/unreachable until you manually unlock it.
See [below on this README](README.md#backup-for-on-chain---channel-funds) for your Backup options to secure your funds against loss. Storing the encrypted Static Channel Backup file to your Nextcloud account is an easy and secure way to do this.
Nextcloud is an open-source project to host your own files: https://en.wikipedia.org/wiki/Nextcloud - in its basics its an open DropBox replacement ... but can do much much more. You can run it yourself or use a hosted Nextcloud server. Find free Nextcloud providers here to sign up: https://nextcloud.com/signup/
You can connect a small extra USB drive to your RaspiBlitz (choose a small one up to 32GB - don't use second HDD or SSD here, that would drain too much power from the RaspiBlitz). On that USB drive your latest StaticChannelBackup will be stored - just in case your HDD gets an error.
This needs to switched on to see the sub-settings options for c-lightning. If switched on it means the c-lighting node implementation is installed and running on your RaspiBlitz - it can run in parallel to LND. If activated you will find an additional option in the SSH Main Menu that offers you more options to operate the c-lightning node. Also under `SERVICES` some apps might just be available if c-lightning is activated.
CLBOSS is an automated manager for C-Lightning routing payments nodes. CLBOSS is effectively a bunch of heuristics modules wired together to a regular clock to continuously monitor your node.
Find more info at the [CLBOSS GitHub](https://github.com/ZmnSCPxj/clboss).
You can protect your c-lightning wallet by encrypting it with your passwordC. On every restart/reboot you will need to decrypt/unlock with that password before c-lightning can use the wallet. This adds some physical security for example in case your node get stolen.
The RaspiBlitz offers further Services, Apps and configuration (scroll down to see all options in the RaspiBlitz) also some Apps & Services might just be available if you installed/activated LND or c-lightning:
Activate/Deactivate service selection with the space bar and then select 'OK' to trigger Install/Uninstall. You can find more details about those options below (top to bottom):
Enables a user to run his own Electrum server on the RaspiBlitz. The server indexes the entire Bitcoin blockchain saved locally on your HDD/SSD, and the resulting index enables fast queries for any given user wallet, allowing the user to keep real-time track of his balances and his transaction history using the [Electrum wallet](https://electrum.org).
Since Electrum Rust Server runs on the user's own machine, there is no need for the wallet to communicate with external Electrum servers, thus preserving the privacy of addresses and balances.
By contrast, if you use your Trezor Hardware Wallet with the trezor.io wallet, it will tell their third party server your public keys - connecting it with your IP. Now you can use your Trezor with the Electrum Wallet, just talking to your own Electrum Server, preserving your privacy.
[BTCPay Server](https://github.com/btcpayserver) is a self-hosted, open-source cryptocurrency payment processor. It's secure, private, censorship-resistant and free.
Find all details on how to use the BTCPay Server on your RaspiBlitz in this great tutorial: https://coincharge.io/en/btcpay-server-on-the-raspiblitz/
After install, you will see a new `BTCPAY` option in the SSH main menu - it will give you all the information you need to start using it.
##### BTC-RPC-Explorer
BTC-RPC-Explorer is a blockchain explorer website you can run on your own RaspiBlitz. See an example running on: https://btc-explorer.com
[Details on Service](https://github.com/janoside/btc-rpc-explorer)
After install, you will see a new `EXPLORE` option in the SSH main menu - it will give you all the information you need to start using it.
##### Specter Desktop
Bitcoin Core has a very powerful command line interface and a wonderful daemon. Using pre-signed bitcoin transactions (PSBT) and [Hardware Wallet Interface](https://github.com/bitcoin-core/HWI) (HWI), it can also work with hardware wallets. At the moment it is very Linux-focused. The same applies to multi-signature setups.
The goal of Specter Desktop is to make a convenient and user-friendly GUI around Bitcoin Core, focusing on multi-signature setups with airgapped hardware wallets like Trezor, Ledger, COLDCARD or the Specter-DIY.
After install, you will see a new `SPECTER` option in the SSH main menu - it will give you all the information you need to start using it.
##### Mempool Space
Mempool Space is the fully featured visualizer, explorer, and API service running on mempool.space
[Details on Service](https://github.com/mempool/mempool)
After install, you will see a new `MEMPOOL` option in the SSH main menu - it will give you all the information you need to start using it.
##### JoinMarket
JoinMarket is software to create a special kind of bitcoin transaction called a CoinJoin transaction. Its aim is to improve the confidentiality and privacy of bitcoin transactions.
A CoinJoin transaction requires other people to take part. The right resources (coins) have to be in the right place, at the right time, in the right quantity. This isn't a software or tech problem, it's an economic problem. JoinMarket works by creating a new kind of market that would allocate these resources in the best way.
For more details see [here](https://github.com/JoinMarket-Org/joinmarket-clientserver).
After install, you will see a new `JMARKET` option in the SSH main menu - it will give you all the information you need to start using it.
##### Download Bitcoin Whitepaper
Extract the original Bitcoin Whitepaper as PDF directly from the blockchain of your node.
The RTL Webinterface is available as an LND & c-lightning Control Dashboard you can run in your browser with a nice GUI - it offers much more control over your Lightning node than the RaspiBlitz SSH menus. It's recommended to give it a try.
Lightning Terminal (LiT) is a browser-based interface for managing channel liquidity on LND. It bundles the former single tools called loop, pool & faraday with an easy to use browser interface.
This tool provides helper functions that can be used to rescue funds locked in LND channels in case lnd itself cannot run properly anymore. Also some other usefull command line features.
The Sphinx App allows chat over the Lightning Network with LND and ties into the idea of [Podcasting 2.0](https://u.today/father-of-podcasting-integrates-bitcoin-lightning-into-his-app). To use the mobile app with your own RaspiBlitz you need to install the [Sphinx Relay Server](https://github.com/stakwork/sphinx-relay/blob/master/README.md).
Mobile wallets work as a remote control app for your RaspiBlitz. First you need to install the apps on your phone - a QR code with the links to the app stores are displayed. Then you need to `pair` them with your RaspiBlitz - also via a QR code displayed on the LCD. If you run your RaspiBlitz without an LCD, there is the fallback option to display that QR code on the terminal as ASCII code (which might involve lowering your terminal's font size).
SCP is a SSH like command to transfer files. If we're able to SSH into the RaspiBlitz, also the SCP to transfer the files should work. If you choose this option, RaspiBlitz will print prepared SCP commands you can copy+paste to run in a second terminal.
*This is the least secure way to transfer those files - everybody in your local network has access to those file during download. Remember with the Admin-Macaroon somebody could take over your node and spend all your funds. Just use as last fallback.*
The Macaroons and TLS.cert files can be copy+pasted as Hex-Strings from RaspiBlitz to any other app that supports that format. If you choose this option, RaspiBlitz will print all the files for you as Hex-String to do so.
IP2TOR is a tunnel service where you can run your RaspiBlitz anonymously behind TOR but you rent a port on a clearnet IP through which you can make services of your RaspiBlitz easy reachable for everybody on the internet. You don't need to care about your local router or firewall settings. You can pay this service also directly through Lightning from your RaspiBlitz as subscription.
At first you select what service of your RaspiBlitz you like to tunnel thru a IP2TOR bridge.
You will get a list of available IP2TOR bridge offerings. Select `OK` on an IP2TOR bridge offering and you will see more details on it, such as how many satoshis the subscription will cost you - your node should be funded and have channels open at this point.
Then you get a list of available IP2TOR bridge offerings. By selecting `OK` on a IP2TOR bridge offering you can get more details on it and you will also see how many satoshis the subscription will cost you - your node should be funded and you should have channels open at this point.
If you choose `AGREE` on the details of a IP2TOR bridge offering the RaspiBlitz tries for you to setup the IP2TOR bridge. If everything worked you will find now the subscription under `MAINMENU` > `SUBSCRIBE` > `LIST My Subscriptions` where you can cancel it again.
To try out the IP2TOR tunnel choose in `MAINMENU` the extra menu point of the Service you choose the bridge for and it should give you now an updated URL or try calling the API on the IP and Port that is displayed under the details of the subscription in the `LIST My Subscriptions` section.
If you want a Webservice like BTCPay Server or LNbits available to the outside internet (like with IP2TOR) people expect you to offer HTTPS address so that the communication between the client and your RaspiBlitz is encrypted. You could use the self-signed HTTPS certificate that RaspiBlitzis offering you, but this will give users Security Warnings in their browser and is not very user friendly. That's where you can use a LetsEncrypt Subscription to get a free valid HTTPS certificate that is excepted without warning from almost all common browsers.
Because you also need a domain name for that you will need to open a free account, the following are presently supported, would be good to add more with the help of the community:
When you create a new LetsEncrypt subscription, you will be asked for your subdomain on DuckDNS and the Auth-Token of your DuckDNS account. Then RaspiBlitz tries to setup everything for you. If everything worked, you will find the subscription under `MAINMENU` > `SUBSCRIBE` > `LIST My Subscriptions`, where you can cancel it at any time if you wish.
To try out the IP2TOR tunnel, go into `MAINMENU` and the extra menu point of the Service you want to use the bridge for. It should give you an updated URL to call your service.
HTTPS can be a hairy topic, you can try using a SSL Checker to help you quickly diagnose problems with your SSL certificate installation: [www.sslshopper.com/ssl-checker.html](https://www.sslshopper.com/ssl-checker.html)
This stops your RaspiBlitz and creates an LND-Rescue ZIP file that you can download via SCP to your laptop. This can be used to move your LND id, wallet & channels to another RaspiBlitz.
This stops your RaspiBlitz and creates a Migration ZIP file you can download/export per SCP to your laptop. This contains all important data of your RaspiBlitz including LND, your Blitz configuration and also data from your installed apps. Can be used to migrate your RaspiBlitz to a new hardware - for example if you want to replace the HDD with a SSD. How to import a Migration File [see here](README.md#import-a-migration-file).
To expedite the setup process, you can connect another RaspiBlitz and copy over your blockchain data to it. Your RaspiBlitz will be `offline` during that process and it can take between 4 to 6 hours.
Make sure both RaspiBlitzes are connected to the same local network. During setup with the new RaspiBlitz, choose the `COPY` option to get the blockchain data and then select the source computer `RASPIBLITZ`. Now you can activate the `COPY-SOURCE` option, enter the given IP of the new RaspiBlitz and its Password A (not yours) .. then the process should start.
Use this option if your blockchain data got corrupted. It will keep your LND data. You can even keep your channels open. Just keep in mind that your Lightning node will appear offline to the network until you have re-downloaded the blockchain.
If you had the Bitcoin Transaction Index activated you can use this option to make sure that this extra space consuming index gets deleted as well to free up space.
This is a common way to update your RaspiBlitz. Choose this option to prepare your RaspiBlitz for a new SD card image containing the new version release.
With Patching you have now an easy way to sync your RaspiBlitz code/scripts with the official RaspiBlitz GitHub Repo or even your own forked GitHub Repo. This is an option for people that report bugs and we like to offer them a quick script update (patch) between RaspiBlitz releases or for people who want to develop on the RaspiBlitz and sync code between their IDE, forked GitHub and their RaspiBlitz.
Sometimes there is a new LND release that has some breaking changes that once you updated the LND database cannot be reversed (like the update from 0.9.2 to 0.10.0). Then RaspiBlitz offers you an optional update ... this is where you then can update LND.
If you choose this you get the option to do this `VERIFIED` that means it offers you the optional LND update we tested the RaspiBlitz with or `RECKLESS` which will just grab the latest LND release from the GitHub releases page (also Release Candidates) and install it with no further guarantees and verification checks - this is for people that run nodes to test new releases and how they work with existing RaspiBlitz apps.
The `EXIT` option next to `OK` closes the SSH main menu and exits to the terminal - where the user can make use of the CLI clients `bitcoin-cli`&`lncli` directly.
A Migration file contains all the important data from your RaspiBlitz, like your LND data, Bitcoin Wallet, raspiblitz.config, Tor/SSH keys .. and also installed apps. You can use this to migrate your RaspiBlitz to new hardware.
If you want to import it again to a new RaspiBlitz (for example with an updated HDD/SSD), you can choose the `MIGRATION` option on the first setup dialog of a fresh sd card image.
Normally you choose here the EXT4 format. But you also have the option to choose the BTRFS format which is an experimental feature under RaspiBlitz - see [FAQ for details on BTRFS](FAQ.md#why-use-btrfs-on-raspiblitz).
You have the two options: [SYNC](README.md#1-sync---selfvalidate-all-blocks) and [COPY](README.md#2-copy---copy-from-laptop-or-another-raspiblitz-over-local-network), as mentioned in the normal setup.
Another kind of migration is when you already run a full node with the Umbrel or myNode software and you like to change it to RaspiBlitz without closing channels. You basically have all the hardware needed and just need to change software. You don't need the [LCD from the shopping list](#amazon-shopping-list-buy-parts--build-it-yourself) - RaspiBlitz can also run without an LCD.
*NOTE: This migration is still experimental. You will still use the terminal to setup & manage your RaspiBlitz. If that is too technical for you please wait for the RaspiBlitz v1.8, which will introduce a WebUI for your browser that make the migration to RaspiBlitz familiar like with your old node user experiences.*
Also be aware that at the moment RaspiBlitz can only transfer your blockchain and LND wallet data (including channels) over to RaspiBlitz. Any data/pairing of additional apps cannot be transfered and may get lost.
* if you like to use a HDMI monitor for status & progress, create a empty file called `hdmi` (without any ending) on the sd card while connected to your laptop
* [insert sd card, boot up & login per SSH](#boot-your-raspiblitz)
Now RaspiBlitz should show you that old data from your node was detected and offer you todo the migration.
* If you continue it will prepare the data & reboot.
* The RaspiBlitz recover/update modus is starting - that will take a while and finally reboot.
* Login per SSH as before and reset the passwords (`FINAL RECOVERY LOGIN` on LCD). Then a final reboot will happen.
* Login per SSH with your new password A & unlock LND wallet with password C. Now blockchain needs to catch up and then your RaspiBlitz should be ready and show you (under INFO) your on-chain & channel balance.
If you don't have an LCD or HDMI monitor connected it might be a bit difficult to see what state your RaspiBlitz is in. Just (re-)try to login per SSH again after the reboots (might always take some time until it reacts).
Since LND v0.6 (and RaspiBlitz v1.2), a feature called Static-Channel-Backups is available. Within RaspiBlitz this is used when a `channel.backup` file is mentioned.
You should have written down the word seed during wallet setup; keep it at a safe (offline) location. The `channel.backup` is stored on the HDD and updated by LND every time a new channel is opened or closed. The latest version of this file is needed to recover all your funds. In case your HDD gets damaged, RaspiBlitz always keeps a copy of the latest version of the `channel.backup` file on the SD card within the sub-directories of: `/home/admin/.lnd/data/chain/`.
If you want to get one step further in securing your funds against total fall-out of the RaspiBlitz (gets completely damaged, stolen or lost) then you can additionally set up an off-location or cloud backup of the `channel.backup` file. The file itself is encrypted by your word seed - so it's OK to store the file to untrusted third parties for backup (if you want).
This video explains in detail how you can set further back Static Channel information:
Activate the StaticChannelBackup to DropBox in the `SETTINGS` menu of your RaspiBlitz. It will ask you for the Dropbox-Authtoken. This is how you can get this token:
Choose the 'Scoped Access' & 'App Folder' and set a unique name - for example `LNDbackup` with a random number behind it. Agree to Terms of Service and click 'Create App'.
Its important first to select the `Permissions` tab and activate the `files.content.write` permission. Don't forget to `Submit` the change before continue.
Now go back to the 'Settings' tab and under 'OAuth2', choose 'no expiration' under 'Access token expiration' then click the 'Generate' button. You will now see a long string of letters and numbers appear. This is your **Dropbox-Authtoken**. Make sure to copy the complete token string .. there might be more if you scroll to the right in the token field.
To test it, try opening or closing a channel, and then check if you can find a copy of `channel.backup` in your Dropbox. You can check the background-script logs to see details on errors: `sudo journalctl -f -u background`
In the `/mnt/hdd/raspiblitz.conf` the parameter `scpBackupTarget='[USER]@[SERVER]:[DIRPATH-WITHOUT-ENDING-/]'` can be set to activate this feature. On that remote server the public key of the RaspiBlitz root user needs to be part of the authorized keys - so that no password is needed for the background script to make the backup.
To test it, try opening or closing a channel, and then check if you can find a copy of `channel.backup` on your remote server. You can check the background-script logs to see details on errors: `sudo journalctl -f -u background`
You can use a small USB thumb drive (everything over 120MB is fine). Please don't use a second HDD/SSD for this because that might drain too much power and could hurt the security of your data more than it helps.
To test it, try opening or closing a channel, and then check if you can find a copy of `channel.backup` in the specified location. You can check the background-script logs to see details on errors: `sudo journalctl -f -u background`
If you have a RaspiBlitz v1.2 or higher - just follow the `UPDATE` option from the main menu (choose `RELEASE` if asked) and follow the instructions - see the process in detail in the following video.
Now download the new RaspiBlitz SD card image and write it to your SD card. Yes, you simply overwrite the old one, it's OK! The RaspiBlitz stores all your personal data on the HDD. See details about latest SD card image [here](#installing-the-software).
*If you have done manual changes to the system (installed packages, added scripts, etc), you might need to do some preparations before overwriting your SD card - see [FAQ](FAQ.md#why-do-i-need-to-re-burn-my-sd-card-for-an-update).*
If done successfully, simply put the SD card into the RaspiBlitz and power on again. Then follow the instructions on the display ... and don't worry, you don't need to re-download the blockchain again. It is worth noting here that your SSH password will be reset to `raspiblitz`. You will be prompted to change this once the update is finished.
A ready-to-use SD card image of RaspiBlitz is provided by us for download, to get everybody started quickly (see above). But if you want to build that image yourself - here is a quick guide:
Now you are ready to start the SD card build script (check the code to see if the installation and config are OK for you). Copy the following command into your terminal and execute:
As you can see from the URL, you can find the build script in this Git repo under `build_sdcard.sh`. You can check what gets installed and configured in detail. Feel free to post improvements as pull requests.
The whole build process takes a while. At the end the LCD drivers get installed and a reboot is needed. A user `admin` is created during the process. Remember the default password is now `raspiblitz`. You can login per SSH again - this time use admin: `ssh admin@[IP-OF-YOUR-RASPI]`. The install dialog of the RaspiBlitz schould automatically start. If you do not want to continue with the installation at this moment and use this sd card as a template for setting up multiple RaspiBlitzes, click `Cancel` and run `release`. Once you see the LCD going white and the activity LED of the pi starts going dark, you can unplug power and remove the SD card. You have now built your own RaspiBlitz SD card image.
*Note: If you plan to use your self-build sd card as a MASTER copy and distribute it: Use a smaller 8GB card for that. This way it's ensured that it will fit on every 16 GB card recommended for RaspiBlitz later on.*
Everybody is welcome to join, improve, and extend the RaspiBlitz - it's a work in progress. [Check the issues](https://github.com/rootzoll/raspiblitz/issues) if you wanna help out or add new ideas. You find the scripts used for RaspiBlitz interactions on the device at `/home/admin` or in this Git repo's subfolder `home.admin`.
To start your Deep Dive into the RaspiBlitz project, the following YouTube video (July 2020) is recommended: [https://www.youtube.com/watch?v=QXUGg45CWLo](https://www.youtube.com/watch?v=QXUGg45CWLo)
Also get inspired for a deep-dive with the original "[RaspiBolt](https://stadicus.github.io/RaspiBolt/)" tutorial on how to build a lightning node on the RaspberryPi, the base work on which the RaspiBlitz was developed - so much thx to Stadicus :)
Join me on twitter [@rootzoll](https://twitter.com/rootzoll), visit us at an upcoming [#lightninghackday](https://twitter.com/hashtag/LightningHackday?src=hash) or check by one of our bitcoin meetups in Berlin ... every 1st Thursday evening a month at the room77 bar - feel free to buy me a beer with lightning there :)
