Block top - The block number and size with the blockchain (in blocks) on generation of the present block Nonce - The transaction selection 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://bookmarkinglog.com/story20357815/the-smart-trick-of-blockchain-explorer-app-that-nobody-is-discussing-https-hedge-fachschaft-informatik-uni-kl-de-nnpg48bpspmldanhox94bq