According to Science Daily, the most significant geological event that happens in ocean trenches is the gradual subduction of the Earth's crust down into its mantle. This process takes tens of...
A blockchain â originally block chain â is a continuously growing list of records, called blocks, which are linked and secured using cryptography. Each block contains typically a hash pointer as a link to a previous block, a timestamp and transaction data. By design, blockchains are inherently resistant to modification of the data.
A blockchain is a data structure with three key properties: 1  Virtually impossible to tamper with. It should be virtually impossible to edit past data stored in a blockchain. 2  Decentralized. No single entity should have authoritative control over what data gets onto the blockchain. 3  Distributed.