Block height - The block variety and size with the blockchain (in blocks) on generation 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 actually be the 101st transaction submitted by this account) https://bookmarkvids.com/story21769772/what-does-blockchain-explorer-usdt-mean-https-pad-karuka-tech-vc6p2vmyr6a9ij1xxkanwg