Block top - The block number and size with the blockchain (in blocks) on creation of the current block Nonce - The transaction variety for that from address (Remember this starts off at 0 so a nonce of a hundred would really be the 101st transaction submitted by this account) https://thesocialdelight.com/story5795411/detailed-notes-on-blockchain-explorer-unconfirmed-transaction-https-independent-academia-edu-drewandreassen4