The role of the full node in Bitcoin is to download and maintain a complete version of the Bitcoin blockchain, verify transactions on the blockchain, and update the blockchain version network when there is a longer version of the blockchain on Bitcoin. Nodes provide fault tolerance: There are many other nodes that can access the blockchain. This makes the Bitcoin network more secure and reliable.
The full node needs to download new chunks that periodically appear and upload them further to other required nodes. For today's 7TPS Bitcoin blockchain, the average download bandwidth consumption is 13.6Kbps, which is not a burden at all. But if TPS is raised to 7000TPS, it will require at least 13.6Mbps of download bandwidth to withstand - note that this is critical data and orderly, and if block data is not transmitted in a timely manner, the blockchain will not be able to continue to construct and the network-wide book status cannot be rebuilt.
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If your node has build mode enabled, you'll need to re-download the entire Bitcoin blockchain.
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Bitcoin player Wang Ruixi: First of all, you have to download a Bitcoin wallet, which is colloquially a program for storing Bitcoin. After you download this app you will get a Bitcoin address, I enter the corresponding Bitcoin amount through my wallet and transfer it to you.
Lightweight nodes are mainly convenient for ordinary users, for example, you download a Bitcoin wallet APP on the phone, your phone is a lightweight node, do not need to download the whole network data, operators will be the user's wallet transfer and the entire blockchain check.
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Advanced: Installation files for software are often referred to as binary files. These binary files typically need to be signed by one or more developers of the project's PGP key. Example: Bitcoin Core Download Instructions, (Bitcoin Light Wallet) Electrum Download Instructions.
According to one Bitcoin caller, the download speed is much faster than it is today: "The initial blockchain download speed was quite slow. "
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Bitcoin Wallet is a complete client, which means you have to download historical links throughout the blockchain to synchronize the optimization of this wallet. But that wasn't a problem, because there was little valuable history at the time, so it wasn't a hassle to download. Looking back at the wallet in 2012, Vitalik Buterin wrote: Because it is a complete node, the client must download the entire (6 g) blockchain. Today, however, the Bitcoin blockchain is approaching 250GB.