Block top - The block selection and length from the blockchain (in blocks) on creation of the current block Nonce - The transaction number for the from address (bear in mind this starts at 0 so a nonce of 100 would really be the 101st transaction submitted by this account) https://naturalbookmarks.com/story20358028/helping-the-others-realize-the-advantages-of-blockchain-explorer-one-https-www-demilked-com-author-brokerwhorl5