Company: CNCKW
Filing Date: 2025-09-10
Form Type: 424B3
Source: 0001213900-25-086398
Chunk: 144

Company: Coincheck Group N.V.
Filing Date: 2025-09-10
Form: 424B3
Chunk 144
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 per our internal practices, and although this number can be increased in line with updates to internal practices we continue to limit the members of management so authorized for enhanced security. With respect to our crypto assets which we hold in a hot wallet, release is made using an automated program with the private key stored securely with our cloud services provider. Transfers are limited to wallets instructed by our trading counterparties. Access to the private key’s secure storage is limited to the same type of personnel as those who have access to our cold wallet storage and is also designed to require the approval of multiple individuals for any change to the program settings. 94

All access is logged and reviewed on a periodic basis and our protocols and internal controls over access to customer crypto assets are subject to assessment as part of our internal and external audit processes. Our Accounting & Finance Department conducts procedures to compare assets recorded on the blockchain to our internal database in order to monitor for the accuracy of our records. We also provide our independent auditors with the addresses of our cold and hot wallets to enable them to verify the existence of cryptocurrencies in the course of their audit procedures. We do not use an external wallet custodian. Regarding NFTs, there are no clear legal regulations in Japan as of June 30, 2025 on custody of NFTs, but according to our internal rules we hold NFTs acquired by customers of our Coincheck NFT Marketplace in hot wallets on their behalf. Crypto Assets Held (Borrowed from Customers or Deposited with Counterparties) The following table shows the total amount of crypto assets held by us (meaning, mainly, borrowed from customers or deposited with counterparties) as of March 31, 2022, September 30, 2022, March 31, 2023, September 30, 2023, March 31, 2024, September 30, 2024 and March 31, 2025, broken down by what we hold in cold wallets, hot wallets, and deposited with counterparties.

|                                      |     |               As of 
           March 31, 
                2022 |     |         As of 
 September 30, 
          2022 |     |     As of 
 March 31, 
      2023 |     |         As of 
 September 30, 
          2023 |     |     As of 
 March 31, 
      2024 |     |         As of 
 September 30, 
          2024