1) yup you can see your order on Solana
2) yup you can see trades on Solana
3) trade price, as well as fill price, both on-chain
4) matching engine also on-chains so you can vet that it will do what it claims
100x the throughput of TRX etc.
If it is so fast, why don’t you tell us how many nodes are running on Solana (1 or 2?) if it is not even decentralized, what is the point of having a DEX?