最新报道:Blockchain is a decentralized digital ledger that records transactions across a network of computers, ensuring transparency and security without intermediaries. It bundles transactions into blocks, which are cryptographically linked and immutable once added. Key applications include cryptocurrencies like Bitcoin, NFTs, supply chain tracking, and smart contracts. Operating through consensus mechanisms like Proof-of-Work or Proof-of-Stake, it eliminates the need for trusted third parties but faces challenges in energy use and scalability. Ultimately, blockchain enables a trustless system for verifying and storing data.