Bitcoin Explorer Zpub https://files.fm/f/77bncktkx3 Solana: Normally several seconds to some minute. On the other hand, in rare conditions, Solana blockchain transactions can remain unconfirmed for several hours or simply times These transactions stay in the mempool (memory pool) right up until a miner or validator selects them and incorporates them https://allyourbookmarks.com/story20220477/explorer-blockchain-usdt-helping-the-others-realize-the-advantages-of-blockchain-explorer-mempool-https-cutt-ly-3rj9ygbc