Block top - The block number and length in the blockchain (in blocks) on development of the present block Nonce - The transaction selection for the from address (bear in mind this starts off at 0 so a nonce of one hundred would actually be the 101st transaction submitted by https://bookmarkize.com/story20438318/blockchain-explorer-fundamentals-explained-https-md-swk-web-com-onnbpblstmy8giqdrhnkga