Blockchain Explained https://www.giveawayoftheday.com/forums/profile/1149930 Solana: Usually several seconds into a minute. Even so, in exceptional situations, Solana blockchain transactions can continue to be unconfirmed for hrs and even days These transactions remain in the mempool (memory pool) until a miner or validator selects them and consists of them inside a block. https://icelisting.com/story21407462/blockchain-explorer-rumored-buzz-on-blockchain-explorer-usdt-trc20-https-cutt-ly-3rj9ygbc