If you notice, transfer between blockchains different from each other use to be very delaying and also transaction fees and rates are high and
Ptokens BTC is an ERC-20 token, it is on the etherium blockchain and it mimic bitcoin in anway. pTokens BTC works in etherium blockchain perfectly.
Talking about security, ptokens BTC are highly secured, you don't have to worry about security. Etherium blockchain are highly secured. Prior to that, main aim of every new project is to ensure security of her user
Looking pTokens BTC on coingkeko, you see how it has a good amount of trade volume and good