Block top - The block selection and duration of your blockchain (in blocks) on generation of the current block Nonce - The transaction range to the from address (bear in mind this starts at 0 so a nonce of a hundred would actually be the one hundred and first transaction https://thegreatbookmark.com/story20326781/the-smart-trick-of-explorer-blockchain-ethereum-that-nobody-is-discussing-https-md-darmstadt-ccc-de-znwtrv3frkwon6rj4y8pua