Block top - The block selection and duration of the blockchain (in blocks) on generation of the present block Nonce - The transaction selection with the from address (bear in mind this starts at 0 so a nonce of 100 would actually be the 101st transaction submitted by this account) https://pukkabookmarks.com/story20870857/the-best-side-of-explorer-blockchain-usdt-https-pad-stuve-uni-ulm-de-qjwqtezvsfelat3ec1kc9q