In case of Bitcoin exchanges, it can be used to make a double deposit or double withdrawal. (bitcoinmining.shop)
«Fungibility of in - game assets is a valid use case of the Bitcoin blockchain in which the Counterparty protocol provides,» said Rare Pepe enthusiast and artist Shawn Leary. (bitcoinist.com)
The need for censorship resistance in one's online transactions is the main use case of the Bitcoin blockchain that is not found anywhere else (outside of altcoins). (bitcoinmagazine.com)