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How does the blockchain record transactions? Blocks, hashes, proof of work (2026)

Bitcoin 2026-08-04 CoinTrailHub Editorial Team 12 分钟 21 阅读

#Bitcoin #blockchain #decentralization

How does the blockchain record transactions? Blocks, hashes, proof of work (2026)

How exactly does the Bitcoin blockchain record each transaction? This article breaks down the internal structure of a Bitcoin block, the Merkle Tree transaction-verification principle, the role of the SHA-256 hash algorithm, and the proof-of-work (PoW) mining race. By the end you'll understand why on-chain data is so hard to tamper with, and what miners are actually "computing." For readers who already know the BTC basics and want to dig into the underlying technical logic. Worth bookmarking.

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Why doesn't Bitcoin need banks? UTXO, nodes, PoW

Bitcoin 2026-08-04 CoinTrailHub Editorial Team 11 分钟 18 阅读

#Bitcoin #decentralization

Why doesn't Bitcoin need banks? UTXO, nodes, PoW

Bitcoin's real innovation isn't creating a digital currency, but letting thousands of mutually untrusting nodes around the world jointly maintain a history that no one can freely rewrite — without any administrator. This article breaks down BTC's design logic, real governance cases and security boundaries from four angles: the UTXO ownership model, full-node rule enforcement, PoW security economics, and the four-layer balance of power. For readers who want to understand why Bitcoin is designed this way, and what problem it actually solves.

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