Block top - The block number and length on the blockchain (in blocks) on generation of the present block Nonce - The transaction number for your from address (Keep in mind this commences at 0 so a nonce of a hundred would basically be the 101st transaction submitted by this https://webnowmedia.com/story6040329/the-2-minute-rule-for-blockchain-explorer-solana-https-diigo-com-010nvri