A blockchain is a ledger of blocks linked into a chain: each block’s hash includes the previous block’s prev-hash. Mining (PoW) = searching for a nonce until the hash has enough leading zeros. Edit one block → the chain breaks for all later blocks ⇒ immutable. The basis of Bitcoin & distributed finance.
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Pick a ‘Scenario’ to change the scene (mine · raise difficulty · tamper · re-mine · fork) · 🔀 change data · click a structure for details
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Nonce tries (log) & difficulty over timenonces trieddifficulty