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 begins at 0 so a nonce of 100 would actually be the 101st transaction submitted by this account) https://webookmarks.com/story5934847/the-best-side-of-explorer-blockchain-usdt-https-pinshape-com-auth-users-auth-google