copyright Blockchain Explorer https://www.instapaper.com/p/16800704 Solana: Commonly a handful of seconds to a minute. Nonetheless, in unusual conditions, Solana blockchain transactions can remain unconfirmed for hours as well as times These transactions remain in the mempool (memory pool) till a miner or validator selects them and features them within a block. https://apollobookmarks.com/story20202679/blockchain-explorer-tron-how-explorer-blockchain-btc-can-save-you-time-stress-and-money-https-cutt-ly-3rj9ygbc