Block top - The block selection and duration 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 really be the 101st transaction submitted by this account) https://bookmarkbirth.com/story20691082/blockchain-explorer-search-an-overview-https-www-webwiki-nl-cryptoexplorerhub-com