Private keys of privileged accounts are distributed among the three companies using MPC (Multi-Party Computation) and carefully managed. Private keys will never be exposed to third parties or accessed by unauthorized users. Additionally, since it is impossible to use the private key to request an arbitrary transaction, the CAPTAIN TSUBASA -RIVALS- operations team is not able to control funds.
The private keys for the privileged accounts above could only be used by request from the game program. The source code of the game program can only be updated by the approval of both companies participating in the management, reducing centralized risk.