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://geniusbookmarks.com/story20799265/a-review-of-blockchain-explorer-usdt-https-files-fm-f-e6nkandt95