Block top - The block number and size 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://directmysocial.com/story5213610/the-definitive-guide-to-explorer-blockchain-ethereum-http-pandora-nla-gov-au-external-html-link-https-cryptoexplorerhub-com