A Phantom Block occurs in a blockchain network when two miners produce different blocks at the same time. This can lead to a temporary fork in the chain as the network tries to add both blocks. However, only one of the blocks will ultimately be accepted by the network as the valid block, while the other is discarded.
This situation can cause confusion and potential disruptions to the network as participants disagree on which block to accept. In order to resolve the fork, the network will automatically select the longest chain, the one with the most proof-of-work, as the valid chain. The block that is not included in the main chain is considered a Phantom Block.
Despite its temporary nature, a Phantom Block can impact transaction confirmations and network security. Miners and nodes need to stay vigilant to detect and resolve these instances quickly to ensure the smooth operation of the blockchain.
