Block Explorer Optimism https://www.demilked.com/author/crawford18sheehan/ Solana: Usually several seconds into a minute. Nevertheless, in exceptional instances, Solana blockchain transactions can keep on being unconfirmed for hrs or perhaps times These transactions remain in the mempool (memory pool) right until a miner or validator selects them and involves them inside a block. https://webnowmedia.com/story6157071/blockchain-explorer-xrp-the-ultimate-guide-to-explorer-blockchain-neo-https-cutt-ly-3rj9ygbc