Block Explorer Hbar https://hedgedoc.k8s.eonerc.rwth-aachen.de/ftwXmwWQS3aRxqs88ptGCw/ Solana: Generally some seconds to the moment. Having said that, in uncommon instances, Solana blockchain transactions can stay unconfirmed for hours or even days These transactions stay in the mempool (memory pool) until eventually a miner or validator selects them and features them inside a block. https://bookmarkpagerank.com/story20206353/explorer-blockchain-btc-everything-about-blockchain-explorer-unconfirmed-transaction-https-cutt-ly-3rj9ygbc