Block top - The block number and length from the blockchain (in blocks) on creation of the current block Nonce - The transaction quantity 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://social4geek.com/story5838377/indicators-on-blockchain-explorer-search-you-should-know-https-www-folkd-com-submit-cryptoexplorerhub-com