Block top - The block number and length from the blockchain (in blocks) on development of the current block Nonce - The transaction amount for that 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://bookmarkja.com/story23518784/not-known-factual-statements-about-blockchain-explorer-tool-https-squareblogs-net-heartgarlic3-delving-into-blockchain-explorers