Block top - The block number and length in the blockchain (in blocks) on development of the current block Nonce - The transaction variety with the 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://nanobookmarking.com/story20436345/the-blockchain-explorer-usdt-trc20-diaries-https-pad-fs-lmu-de-h2fzbno0rjqfpyic-69lxg