Block top - The block selection and size on the blockchain (in blocks) on generation of the present block Nonce - The transaction number for your from address (bear in mind this begins at 0 so a nonce of one hundred would actually be the a hundred and first transaction https://bookmarkfame.com/story20155935/the-fact-about-explorer-blockchain-base-that-no-one-is-suggesting-https-clancy-olesen-4-mdwrite-net-opening-the-record-your-resource-to-blockchain-investigation