Block top - The block number and length in 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 truly be the a hundred and first transaction submitted https://allkindsofsocial.com/story5871986/the-greatest-guide-to-blockchain-explorer-unconfirmed-transaction-https-writeablog-net-storeformat0-blockchain-in-the-microscope-exploring-the-unsung-resources