Block top - The block number and length from the blockchain (in blocks) on development 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://singnalsocial.com/story5507575/not-known-facts-about-blockchain-explorer-unconfirmed-transaction-http-www-drugoffice-gov-hk-gb-unigb-cryptoexplorerhub-com