Bitcoin is a digital currency. Bitcoin works as online digital payment. Block in Bitcoins, or a Bitcoin Block is a file. Blocks, or Bitcoin Blocks permanently record a data pertaining to Bitcoin network or transaction of Bitcoins, in any manner. Block is very effective in recording data of latest or recent Bitcoin transaction that has not been recorded or entered in any previous block. A Bitcoin Block acts like a page of a manual ledger or an account record book. Once a Bitcoin block’s data filling capacity is filled and it is completed, it automatically makes way to next empty Bitcoin block in the Blockchain. The entries made in a Bitcoin block are permanent. The entries can never be removed or altered by any means.
Bitcoins being digital currency has all its transfers and transactions made online from one individual to another individual. All these transactions are to be recorded properly for tracking the payments made by one party to another with their names and other details. These Bitcoin transactions in a fixed period of time are recorded into a Bitcoin block, the Bitcoin transactions recording file.
A Bitcoin Block records data of Bitcoin transactions in present time and gives way to the next empty Block when it is full. It is like turning a fresh page of a ledger when the previous page is written all over.