Block top - The block selection 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 actually be the 101st transaction submitted by this account) https://bookmarkspy.com/story22329015/blockchain-explorer-tron-secrets-https-md-swk-web-com-onnbpblstmy8giqdrhnkga