Block top - The block selection and length in the blockchain (in blocks) on generation of the current block Nonce - The transaction amount for that from address (Remember this starts at 0 so a nonce of 100 would truly be the a hundred and first transaction submitted by this https://bookmarkspiral.com/story20606965/detailed-notes-on-blockchain-explorer-unconfirmed-transaction-https-canvas-instructure-com-eportfolios-4028322-entries-14252553