Block top - The block selection and duration of the blockchain (in blocks) on creation of the current block Nonce - The transaction quantity for your from address (bear in mind this starts off at 0 so a nonce of 100 would actually be the 101st transaction submitted by this https://bookmarkahref.com/story20366256/not-known-details-about-blockchain-explorer-usdt-trc20-https-atavi-com-share-xftxdaz1pgsb4