Block Explorer Optimism https://www.hulkshare.com/maychen9/ Solana: Generally a number of seconds to your moment. On the other hand, in exceptional situations, Solana blockchain transactions can continue to be unconfirmed for hrs and even days These transactions stay in the mempool (memory pool) until eventually a miner or validator selects them and https://www.demilked.com/author/jacksongormsen3/