Blockchain technology bitcoin block explorer service. A blockchain is a digital record of transactions. The name comes from its structure are linked together in single list, called a chain. Blocks on the blockchain are made up of digital pieces of information, Blocks stored information about transactions like the time, date and the dollar amount of your recent purchase from amazon.

A single block on the bitcoin blockchain can actually store around 1mb data, depending on the size of  transactions. Basily Blockchain are based on peer to peer topology. Blockchain is a distributed ledger technology that allows data to be stored globally on thousands of servers. Block stores new data it is added to the blockchain,with the other public records of information,  like the securities exchange commission, wikipedia, or your local library there are someone in charge of waiting a new data entries.

Each computer in the blockchain network has its own copy of the blockchain  which means they are thousands.  Although each copy of the blockchain is identical, Blockchain technology accounts for the issues  of security and trust in several ways,new blocks are always stored lineraly and chronologically.  Traditional centralized database needs to only checks the data once but the blockchain needs to check the data thousands of times.