Block top - The block number and length in the blockchain (in blocks) on development of the present block Nonce - The transaction selection with the from address (bear in mind this starts at 0 so a nonce of 100 would really be the one hundred and first transaction submitted https://bookmarkcitizen.com/story20602155/explorer-blockchain-things-to-know-before-you-buy-https-squareblogs-net-heartgarlic3-delving-into-blockchain-explorers