Block top - The block quantity and size on the blockchain (in blocks) on development of the present block Nonce - The transaction selection for the from address (bear in mind this starts at 0 so a nonce of 100 would in fact be the a hundred and first transaction https://eternalbookmarks.com/story20370687/the-greatest-guide-to-blockchain-explorer-unconfirmed-transaction-https-canvas-instructure-com-eportfolios-4028322-entries-14252553