I haven't looked into this yet, but one question I always ask for new blockchains is: Why use your own blockchain? Security is expensive, and it's trivial to 51

I haven't looked into this yet, but one question I always ask for new blockchains is: Why use your own blockchain? Security is expensive, and it's trivial to 51% attack new chains with minimal hash power. This would make sense if you were using a shared security model (i.e. building on Ethereum). That being said, what kind of consensus algorithm are you using?