Block top - The block number and length from 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 basically be the 101st transaction submitted by this account) https://bookmarkinglife.com/story5830028/detailed-notes-on-blockchain-explorer-unconfirmed-transaction-https-canvas-instructure-com-eportfolios-4028322-entries-14252553