Blockchain Explorer Public Key https://www.giveawayoftheday.com/forums/profile/1149930 Solana: Typically a few seconds to a moment. However, in uncommon instances, Solana blockchain transactions can stay unconfirmed for hours and even days These transactions stay in the mempool (memory pool) until finally a miner or validator selects them and incorporates them in a block. https://one-bookmark.com/story20142207/blockchain-explorer-meaning-a-review-of-explorer-blockchain-ethereum-https-cutt-ly-3rj9ygbc