A block explorer is a tool that people use to view all cryptocurrency transactions online. Specifically, to view all current and past transactions on the blockchain. It gives the user information on the blockchain’s hash rate. It also tells us the rate of transaction growth and provides other useful information.
In other words, a block explorer is an online blockchain browser which reveals the data of individual blocks and transactions. With the tool, we can monitor transaction histories and balances of addresses. Integrated with the Blockchain Wallet, our Exchange is a one-stop shop where you can deposit funds and place trades seamlessly in minutes.
Each object is displayed in human-readable form, as a web page, and is given a URL. By using hyperlinks, it allows users to switch from seeing one piece of data to a related one, with a single click. Clicking on the hash of an object, will move to the page that displays its data. This way for instance, you can switch from looking at a transaction, to looking at the previous transaction which gave this transaction its inputs. All block data is visible, in human-readable or machine-readable forms, and even some information that is not actually part of blocks.
It is mainly aimed at advanced users who already know what blocks are and what kind of information they contain, but a lot of helpful information is provided in tool-tips. A listing of "strange transactions" is displayed in the main page, along with listings of the latest and largest transactions. Bitcoin Block Explorer can also display information from the Testnet.