Block top - The block number and length from the blockchain (in blocks) on development of the current block Nonce - The transaction variety for that 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://bookmarkity.com/story20501090/the-fact-about-explorer-blockchain-base-that-no-one-is-suggesting-https-intensedebate-com-people-hawkwhorl3