Block top - The block range and size in the blockchain (in blocks) on creation of the present block Nonce - The transaction variety for your from address (Keep in mind this starts at 0 so a nonce of a hundred would essentially be the a hundred and first transaction https://nowbookmarks.com/story20634242/detailed-notes-on-blockchain-explorer-unconfirmed-transaction-https-www-multichain-com-qa-user-knotdrop3