Block top - The block number and length from the blockchain (in blocks) on generation of the present block Nonce - The transaction number for the from address (bear in mind this starts at 0 so a nonce of 100 would really be the a hundred and first transaction submitted https://bookmark-media.com/story20447422/the-smart-trick-of-blockchain-explorer-app-that-nobody-is-discussing-https-doc-adminforge-de-xbqatr5jtxomaazj2qoagg