copyright Blockchain Explorer https://numberfields.asu.edu/NumberFields/show_user.php?userid=6213316 Solana: Typically a couple of seconds to some minute. Nevertheless, in rare instances, Solana blockchain transactions can stay unconfirmed for hrs and even days These transactions stay in the mempool (memory pool) until eventually a miner or validator selects them and includes them wit... https://wikimapia.org/external_link?url=https://cryptoexplorerhub.com