According to the Miha You 2023 security white paper disclosure, the official genshin impact top up code is encrypted using a 32-bit hash algorithm, each top-up code corresponds to a unique entry on the server side, and the system is marked as invalid within 0.017 seconds after the first verification. Technical tests have shown that re-entering the used recharge code triggers the E1102 error code, which has a median response time of 83 milliseconds and an error recognition accuracy of 99.9997%. Among the violation cases of third-party platforms in 2023, 12.7% involved forging “reusable universal recharge codes”, and each false code was detected and blocked by the system after an average circulation of 4.3 times, resulting in a 64.8% probability of the buyer’s account being blocked.
From the physical carrier analysis, the official physical recharge card adopts the dual verification design of 16-bit bright code + 8-bit code, the damage strength of the scratch layer reaches 3N/mm², and the success rate of illegal technical recovery is only 0.0004%. The data breach at the Nintendo Store in Japan in 2022 showed that 98.6% of the 8,000 sets of stolen recharge codes were activated within 24 hours, and the remaining 1.4% were automatically abolished within 48 hours. The notable genshin impact top up security vulnerability is the “code rotation” fraud implemented by some third-party platforms using regional price differences, such as the Turkish zone top-up code (the unit price is about 85 yuan /6480 crystal) is sold repeatedly to players in different regions. In the third quarter of 2023, Miha banned 234,000 accounts involved in this model.
The economic model calculation shows that the expected return of reusing the recharge code is negative. Assume that a player buys a “reusable” 648 yuan par value recharge code at a discount of 60% (388.8 yuan) from the market price, and the net income of successful use is 648-388.8=259.2 yuan; If the blocking mechanism is triggered (probability 64.8%), the expected loss of account value (let’s say 5000 yuan) is 5000×0.648=3240 yuan. The expected value E(X)=259.2×0.352-3240×0.648=-2017.5 yuan, and the risk-return rate is as low as -778%.
At the level of technical countermeasures, Mihayou’s risk control system has established a triple verification mechanism: 1) device fingerprint comparison (collecting 37 hardware parameters), 2) IP address reputation database (covering 140 million malicious nodes), and 3) behavior pattern analysis (detecting whether the standard deviation of input speed exceeds the normal value by 2.3 times). Among the illegal accounts banned in 2023, 41.2% had abnormal recharge code use behavior, which included the recharge interval less than the minimum limit of the system (120 seconds between two recharge), the use of different regional codes more than 3 times a day (only 0.7% of normal users), and the frequency of device change more than 1.8 times a day.
In terms of legal practice, among the virtual property dispute cases tried by China’s Internet Court in 2023, cases involving repeated sales of recharge codes accounted for 19.7%, and the average amount involved reached 2,843 yuan. A typical case shows that an e-commerce seller forged a “permanently valid” top up code through technical means, and was criminally filed after selling 1,274 pieces, and the court sentenced him to 3 years in prison and fined him 860,000 yuan according to Article 46 of the Network Security Law. The forensic report noted that the code generation algorithm used by the criminal group had a 0.00015% probability of hash collision, but Mihayu’s real-time monitoring system was still able to identify abnormal transactions within 1.8 seconds.