Confirmation

A confirmation is the state of a crypto transaction being included in a block and accepted by the blockchain network. Once a transaction receives its first confirmation, it has officially been recorded in a block. Additional confirmations occur as new blocks are added after that block. More confirmations generally make a transaction incrementally difficult to reverse because doing so would require altering the confirmed block and the blocks that came after it. Different blockchains, wallets, and crypto platforms often require different numbers of confirmations before they can consider a deposit or transfer as being final.

A Bitcoin deposit may appear as pending after it is broadcast to the network. Once miners include it in a block, it receives one confirmation, and each new block after that adds another confirmation.