Coincheck Co., Ltd. (Headquarters: Shibuya-ku, Tokyo; Representative Directors: Satoshi Hasuo, Tomoyuki Isaka; hereinafter "the Company") is pleased to announce that its "Coincheck App," which boasts the No. 1 active user base in Japan*, has recorded "No. 1 in Japan"* for download numbers in the first half of 2026 among cryptocurrency trading apps in Japan. The "Coincheck App" has achieved the "No. 1 in Japan" ranking for app downloads for seven consecutive years, up to December 2025. * Target: Cryptocurrency trading apps in Japan, Period: January 2026 - June 2026. Data provided by: AppTweak The Company will continue to strive for improvements, aiming to provide an app that is easy to use, allowing even those new to cryptocurrency trading to easily purchase cryptocurrencies such as Bitcoin. Three Highlights from H1 2026 Expanding Cryptocurrency Touchpoints through Partnerships with Coincheck CaaS 1. Launch of Point Exchange Service for Cryptocurrencies with Saison Card's "Perpetual Savings Points" We have entered into a business partnership agreement with Credit Saison Co., Ltd. to further expand the domestic cryptocurrency market and create new services. Starting June 29, 2026, we launched a service that allows "Perpetual Savings Points" to be exchanged for three types of cryptocurrencies. This partnership aims to create opportunities for Saison Card members to access cryptocurrencies and new financial services. We will promote collaboration in areas such as point programs and customer loyalty programs, the integration of payment services and cryptocurrency services, and marketing cooperation utilizing each other's customer base. Click here for details. 2. Business Partnership Agreement with KDDI and Establishment of New Company "au Coincheck Digital Assets, Inc." We have entered into a business partnership agreement with KDDI Corporation. By combining KDDI's customer base within the "au Economy Zone" with our expertise in the cryptocurrency business, we will expan