Block top - The block selection 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://bookmarkquotes.com/story20785406/5-easy-facts-about-blockchain-explorer-api-described-https-telegra-ph-blockchain-trackers-the-key-to-grasping-copyright-transactions-09-04