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What Are Nodes?
In blockchain technology, nodes are individual computers or devices that participate in a blockchain network. Each node plays a role in maintaining the integrity, security, and operation of the decentralized ledger. Here's a breakdown:
Types of Nodes
1. Full Node: Stores the entire blockchain history and independently verifies transactions and blocks.๐ฅ๏ธ
2. Lightweight (or SPV) Node: Stores only part of the blockchain and relies on full nodes for data verification.๐ป
3. Mining Node: Competes to create new blocks by solving complex mathematical puzzles (proof of work).๐ฑ๏ธ
4. Validator Node: In proof-of-stake or similar systems, these nodes validate transactions and propose new blocks.๐
5. Masternode: A special full node in some blockchains that performs specific functions like handling instant transactions or voting.๐พ
Key Functions๐จ๐พโ๐ป
Verifying and relaying transactions
Maintaining a copy of the ledger
Ensuring consensus across the network
Participating in governance (in some blockchains)