Block top - The block number and size from the blockchain (in blocks) on creation of the current block Nonce - The transaction variety with the from address (bear in mind this begins at 0 so a nonce of one hundred would truly be the a hundred and first transaction https://thebookmarknight.com/story20558259/top-guidelines-of-explorer-blockchain-solana-https-pad-geolab-space-1eemv59krmalavl2pdd7cg