Block top - The block selection and length from the blockchain (in blocks) on development of the current block Nonce - The transaction amount to the from address (Keep in mind this starts at 0 so a nonce of 100 would really be the 101st transaction submitted by this account) https://socialrus.com/story21521356/the-fact-about-explorer-blockchain-base-that-no-one-is-suggesting-https-blogfreely-net-pathfrog8-blockchain-trackers-a-gateway-to-comprehending-copyright-transactions