A blockchain explorer is an online tool that provides a visual interface to navigate through the activity of a blockchain. Similar to a search engine for the web, it allows you to access details about transactions, blocks, addresses, and other relevant elements of a specific blockchain.
Each transaction within the blockchain has a unique identifier, commonly called a Transaction ID (Txid or hash). With this identifier, or even just your wallet address, you can use the explorer to view all the information associated with that transaction or address. This can include the amount of the transaction, associated fees, date and time, as well as the confirmation status of the transaction.
It's important to note that the explorer is purely informational and does not allow for executing or modifying transactions. Its role is to provide transparency and traceability for anyone wishing to understand or verify activities on a given blockchain.
https://zeblockchain.com is one of the many available explorers, and it specializes in tracking the Bitcoin network. However, there are numerous other explorers tailored to different blockchains and offering various features.