copyright Blockchain Explorer https://intensedebate.com/people/cheeklivingsto Solana: Ordinarily a few seconds to the moment. However, in rare instances, Solana blockchain transactions can remain unconfirmed for several hours or even times These transactions remain in the mempool (memory pool) right until a miner or validator selects them and includes them within a block. https://bookmarkswing.com/story22013898/blockchain-explorer-mempool-explorer-blockchain-tron-options-https-cutt-ly-3rj9ygbc