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This article introduces the relevant knowledge of "how to build Bitcoin full node". In the operation process of actual cases, many people will encounter such difficulties. Next, let Xiaobian lead you to learn how to deal with these situations! I hope you can read carefully and learn something!

1. machine/plant

You need a machine you can trust. You can use a tiny computer the size of a Raspberry Pi, but a mini computer or self-assembled computer would be better. It doesn't require a lot of storage space or access to high-speed Internet, which helps.

Ideally, the computer runs an open-source operating system, encrypts the hard drive, and blocks unauthorized access through firewalls and the like.

The device must be your own, inaccessible to anyone else, and preferably in a place only you can turn on.

2. Tor network (onion router)

Your machine is best placed entirely on Tor, so that it is difficult for anyone to locate you and launch a physical attack. It also hides the fact that you're using Bitcoin, because in some cases, using Bitcoin can inadvertently leave a bull 's-eye on your back.

If you want to run some service on your machine, such as Lightning Network or Bitcoin Light Wallet, then choose Hidden Service or Onion Network, which allows you to easily acquire nodes outside your home network without further testing or configuring the network.

Click for source code.

3. Bitcoin nodes

Your Bitcoin node verifies the integrity of every transaction and block transfer in the peer-to-peer network. This gives every investor and coin holder a chance to learn how many bitcoins are available and whether the entire system is still working properly. Although nodes do not prevent splits in the chain, they can help verify that the current rules are being followed.

Perhaps most importantly, the node will give you an accurate message to let you know whether the bitcoin sent to you has been confirmed by the network and will not be double-spent. If you don't have your own nodes, you can only trust someone else's nodes. But others may do evil, so without their own nodes, there is no way to verify whether these nodes are on the same chain and whether they operate well according to the same set of rules.

Checking wallet balances and broadcasting bitcoin transactions through your own nodes can also preserve some anonymity, especially if you hide nodes on Tor.

Click here for Bitcoin Core source code. Or Libbitcoin source code.

4. Lightning Network Node

The Lightning Network promises near-instant and low-cost Bitcoin transactions without causing congestion on the Bitcoin network. But these benefits come at the cost of separate networks and separate software, and with different security assumptions. Unlike bitcoin wallets, which can be safely shut down for long periods of time, or even into a purely analog state, lightning web wallets need to be online most of the time and connected to bitcoin full nodes.

On the other hand, once set up, you can earn meager routing fees and enjoy unfairly low deals. You can also remotely control this node while traveling, using Zap, etc.

5. light wallet

Keeping the entire Bitcoin blockchain on your hard drive and staying connected at all times is something that's usually not possible on your mobile device. Fortunately, with some configuration, we can also use the nodes at home when we go out. The best one to use here is Electrum Personal Server, which is an easy-to-install package that can be installed on your Bitcoin node. You can then run Electrum Wallet on your laptop or phone and connect to nodes at home (possibly via Tor).

Doing so protects your privacy, as other Electrum nodes will not be able to see your address and balance. In addition, it allows you to verify whether incoming transactions are confirmed on the mobile side.

Click for Electrum Personal Server source code and Electrum Wallet source code.

6. communication

Once you have a personal server in your home, you can configure it to improve every aspect of your life, depending on the server's capacity and network speed. For example, you can host video conferences with your own Jitsi Meet server as an alternative to tools like Zoom and Google Hangout.

You can also run your own Jabber server for secure end-to-end encrypted chat. IRC is popular for initiating Group chats, or you can run it yourself with InsIRCd.

"How to build Bitcoin full node" content is introduced here, thank you for reading. If you want to know more about industry-related knowledge, you can pay attention to the website. Xiaobian will output more high-quality practical articles for everyone!

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