In the context of blockchain, what serves as a block's unique identifier, similar to a fingerprint?

3 answers

• Trang Chu ZALOQQNov 29, 2020 · 5 years ago
  In the context of blockchain, a block's unique identifier is known as a hash. A hash is a cryptographic function that takes the data within a block and produces a fixed-length string of characters. This hash is unique to the block and serves as its digital fingerprint. The hash is calculated using the data within the block, including the transactions, previous block's hash, and a nonce value. Any change in the block's data will result in a completely different hash, making it virtually impossible to tamper with the block without detection. This ensures the integrity and immutability of the blockchain, as any alteration to a block will require recalculating the hash for that block and all subsequent blocks.
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• kma2018Aug 10, 2022 · 3 years ago
  When it comes to blockchain, a block's unique identifier is like its fingerprint. This identifier, known as a hash, is generated using a cryptographic algorithm. The hash is a fixed-length string of characters that is unique to the block and represents the block's data. By using the hash, blockchain ensures the integrity and immutability of the data. Any change in the block's data will result in a different hash, making it impossible to tamper with the block without detection. This fingerprint-like identifier plays a crucial role in maintaining the security and trustworthiness of the blockchain.
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• Jivan Bista ComputingAug 20, 2024 · 10 months ago
  In the context of blockchain, a block's unique identifier is called a hash. A hash is a mathematical function that takes the block's data as input and produces a unique output. This output, which is a fixed-length string of characters, serves as the block's fingerprint. The hash is calculated using various components of the block, such as the transactions, previous block's hash, and a nonce value. This unique identifier ensures the integrity and immutability of the blockchain by making it virtually impossible to modify a block's data without changing its hash. Therefore, the hash serves as a crucial element in maintaining the security and trustworthiness of the blockchain.
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