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To make sure you are interacting with the original site and contract you can add Poser contract addresses to the MetaMask address book with your own name.
By default, MetaMask shows the shortened contract address at the top of the window and below. Memorizing contract addresses in this way is not very convenient.
After adding a contract to your address book, you will see the name of your choice, which will increase the readability of the transaction and can prevent you from interacting with scam sites.
Transaction window before adding a contract to the address book
Transaction window after adding a contract to the address book.
PTC contract - Poser Customizing Tool contract