Block height - The block quantity and size on 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://allkindsofsocial.com/story6019621/what-does-blockchain-explorer-usdt-mean-https-pad-karuka-tech-vc6p2vmyr6a9ij1xxkanwg