Your Language: Korean
Reference to previous works (at least 3):
https://bitcointalk.org/index.php?topic=2791442.msg28546060#msg28546060
https://bitcointalk.org/index.php?topic=2901549.msg29840112#msg29840112
https://bitcointalk.org/index.php?topic=2909990.msg29927630#msg29927630