Block top - The block selection and duration of the blockchain (in blocks) on creation of the current block Nonce - The transaction variety for that from address (Remember this starts off at 0 so a nonce of a hundred would actually be the 101st transaction submitted by this account) https://bookmarkalexa.com/story5839511/the-fact-about-explorer-blockchain-base-that-no-one-is-suggesting-https-www-webwiki-it-cryptoexplorerhub-com