A node (from Latin nodus — node) is any computer connected to a blockchain network. The nodes of the decentralized network communicate via P2P protocols to exchange information about blocks and transactions. A node, depending on its type, stores only part or all of the blockchain data.
What is a full node?
Disclaimer: This section covers situations that apply to the Bitcoin network
A full node is any computer connected to the blockchain network 24/7 and fully synchronized with it. Full nodes store all blockchain data, starting from the genesis block.
Full nodes serve the network for free, download and validate each block with transactions, guided solely by the consensus algorithm, and are completely independent. Full nodes reject conflicting blocks or individual transactions.
How do I install a full bitcoin node?
A full node in the bitcoin network can be run locally on a physical computer or a virtual server. To run, you need to download the Bitcoin Core client at bitcoin.org and download the entire blockchain. For a full node to work, TCP port 8333 must be open. When using a software firewall, you must grant access to avoid blocking the port.
How does the number of full nodes affect the functioning of the network?
Full node owners vote to implement new changes to the bitcoin network. The increase in the number of such nodes favors decentralization and complicates the process of adopting protocols only in the interests of certain groups of players.
What is a lightweight node?
A lightweight node is any computer with special software connected to the blockchain network. Lightweight nodes do not store all blockchain data, but only block headers to authenticate the transactions they contain. Lightweight nodes depend on full nodes and can be misled by confirming transactions that run counter to the consensus algorithm.
Is it possible to see a map of full nodes somewhere?
Yes, you can see where full bitcoin nodes are currently active on the Bitnodes website. Using this service, you can also check the correctness of port forwarding.
What is a master node?
A master node is a specially configured full node that shares the reward for maintaining the network with the miners. The most famous example of a master node application is the Dash network.
Masternodes provide increased anonymity, since information about transactions is not publicly available on the blockchain, but is recorded only on master nodes. To launch a master node, you need to make a fixed deposit with the coins of the network.
What is a supernode?
A supernode is a master node on the NEM network.
Supernode is a cryptocurrency API endpoint that functions without a wallet, public block observers (according to the Ambisafe classification).
What blockchains use master node technology?
NEM; Dash; Syscoin; PIVX and others.
Can you earn income from owning a master node?
Yes, the maintenance of a master node can be regarded as passive mining, since their owners share the profit from block generation and validation with miners. Usually, the profitability of a master node is inversely proportional to the liquidity of the coin — thus, high capitalization and user activity lead to a decrease in the profitability of a master node in such a network.
What services provide information on master node profitability?
The Crypto-coinz.net service provides interested users with information about the daily and annual ROI, the price of launching a master node (a deposit that needs to be frozen), and the number of nodes in the network.
What is Harvesting?
It is a way of rewarding nodes on the NEM network that is based on the Proof-Of-Importance (POI) consensus algorithm. This protocol allows a certain number of accounts to be harvested through one client. POI takes into account three factors when determining the coefficient of the importance of an account (number of coins, account activity in transactions, time spent on the account), which in turn is the probability of finding the next block by this account (expressed in prodecimilla).
What is Local Harvesting?
Local harvesting can only be started on the local computer since the client of the NEM network receives a private key, which jeopardizes the funds on the account. This type of harvesting is the least popular due to security concerns.
What is Delegated Harvesting?
This type of harvesting involves the creation of an intermediary account, whose private key will be transferred to the client of the network. The intermediary account contains no funds, which solves the security issue of local harvesting. Official XEM wallets only support the delegated harvesting option.
What is Waves Leasing?
This is the transfer of Waves tokens to a mining pool for a reward. The amount of the reward depends on the conditions of a particular mining pool. The list of leasing pools is presented on the official website of the Waves platform.