Block top - The block number and length from the blockchain (in blocks) on development of the current block Nonce - The transaction range with the from address (Remember this starts off at 0 so a nonce of a hundred would actually be the 101st transaction submitted by this account) https://sociallytraffic.com/story5372527/the-ultimate-guide-to-eth-blockchain-explorer-https-squareblogs-net-heartgarlic3-delving-into-blockchain-explorers