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Bitcoin cryptocurrency blockchain digital currency fiat currency money savings investment finance economics business technology innovation banking payment transfer security decentralization trust transparency immutable ledger distributed network peer-to-peer mining hashing proof-of-work consensus block chain transaction fee reward wallet address private key public key exchange market price volatility regulation adoption 普及 应用
A hand putting a Bitcoin coin into a jar with a clock in the background
Size 3360 × 2240
Format jpg
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