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.
The blockchain is a distributed, public ledger that contains the history of every bitcoin transaction. Anyone can download a copy of the blockchain, and it can be inspected to trace the path of bitcoins from one bitcoin transaction to another. A Block refers to a set of Bitcoin transactions from a certain time period.