Block top - The block selection and duration in the blockchain (in blocks) on development 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://bookmarkangaroo.com/story20387562/the-fact-about-explorer-blockchain-base-that-no-one-is-suggesting-https-www-webwiki-it-cryptoexplorerhub-com