Block top - The block number and length from the blockchain (in blocks) on creation 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://hyperbookmarks.com/story20657981/5-easy-facts-about-blockchain-explorer-api-described-https-doodleordie-com-profile-brokerdrop7