Grade a HashKey Chain address from facts you can document and write the grade in plain words. Treat the 0x address plus the network name as the key you file under.
What moves the grade
An OFAC hit settles the question and raises the grade at once. The network is described as built for financial institutions, so institutional flows are normal here and size alone proves nothing. An empty address and an active one deserve different weight, and the free check separates them through the activity count.
Writing the grade
Lead with the address and the check time. Put the HSK balance next to the grade. Say which inputs came from the free check and which came from your own reading of the explorer.