블록체인 기초 (Blockchain Basics)
분산 원장 기술 입문.
A blockchain is a database where data is stored in blocks that are chained together. Each block contains a hash of itself and the previous block, ensuring immutability. It is typically decentralized, meaning consensus is reached by a global node network. In 2026, the focus has moved from simple ledgers to modular storage and data availability layers.
graph LR
Center["블록체인 기초 (Blockchain Basics)"]:::main
Pre_cryptography["cryptography"]:::pre --> Center
click Pre_cryptography "/terms/cryptography"
Pre_distributed_systems["distributed-systems"]:::pre --> Center
click Pre_distributed_systems "/terms/distributed-systems"
Rel_layer_1["layer-1"]:::related -.-> Center
click Rel_layer_1 "/terms/layer-1"
Rel_distributed_ledger_technology_dlt["distributed-ledger-technology-dlt"]:::related -.-> Center
click Rel_distributed_ledger_technology_dlt "/terms/distributed-ledger-technology-dlt"
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🤓 Expert Deep Dive
Core tech includes Cryptographic [Hashing](/ko/terms/cryptographic-hashing) (SHA-256), [Public-Key Cryptography](/ko/terms/public-key-cryptography) (ECDSA), and P2P Networking. The system solves the Byzantine Generals Problem using economic incentives. Modern developments separate data availability from execution to solve the scaling trilemma.