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://thebookmarkage.com/story20557493/5-easy-facts-about-blockchain-explorer-api-described-https-www-giveawayoftheday-com-forums-profile-1172807