The blockchain is connected by a string of blocks produced by a cryptographic algorithm. Each block is full of transaction records. The block forms a chain structure in order, which is the blockchain ledger. Take Bitcoin as an example. When generating a new block, the miners need to calculate the new hash and random numbers based on the hash value, new trading block and random number of the previous block. That is to say, each block is generated on the basis of the previous block data, which guarantees the uniqueness of the blockchain data. Because the transaction records will completely change the result of the hash value, the miners cannot cheat when they are competitive in computing power. Each miner must wait for the previous block to generate. Eligible random numbers ensure the fairness of mining. Blockchain trading platform "Coinhui".
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