Press Releases

Slash Fintech Limited, SB Payment Service and
Caica Exchange to launch smart contract settlement
Concluded a business alliance agreement to promote popularization

May 16, 2023

Slash Fintech Limited

SB Payment Service Corp.

Caica Exchange Co., Ltd.

Slash Fintech Limited (British Virgin Islands, Representative Director Shinsuke Sato, hereinafter “Slash Fintech”), SoftBank Corp. subsidiary SB Payment Service Corp. (Minato-ku, Tokyo, President and CEO Jun Shimba, hereinafter “SBPS”) ) and Caica Exchange Co., Ltd. (Minato-ku, Tokyo, President Shin Suzuki, hereinafter “Kaika Exchange”), which operates the crypto asset exchange Zaif, have decided to establish a business with the aim of promoting the spread of smart contract settlement *. partnered.

Purpose of this business alliance

In this business alliance, the three companies will jointly consider planning, development, and operation related to smart contract payments in the Japanese market, and will also collaborate on various initiatives related to smart contract payments in Japan in the future.

Slash Fintech develops and provides smart contract payment "Slash Web3 Payments", aiming to develop a new financial infrastructure through the use of crypto assets as a means of payment methods.

SBPS is a PSP agency that handles the payment and financial business of SoftBank group companies, and handles a wide variety of payment methods from over 40 brands, including Credit Card Payment, PayPay (Online Payment), and Mobile Carrier Billing.

Caica Exchange operates the crypto asset exchange “Zaif”. We have already provided the crypto asset payment service “Zaif Payment” and are working to expand the service functions. In addition, CAICA DIGITAL Group, the parent company of Caica Exchange, operates the NFT launchpad "Zaif INO" and provides Web3 related services such as "CAICA Web3 For Biz" for corporate customers.

The three companies believe that they will be able to promote the spread of smart contract payments by making greater use of their experience, knowledge, and development capabilities in the Japanese market for payments that they have cultivated over the years. A conclusion has been reached.

Business overview of this business alliance

The three companies have aimed for mutual ecosystem development through discussions on the social implementation of smart contract payments. In the Japanese market, efforts are underway to utilize blockchain technology to revitalize various industrial fields, and new possibilities are expected to be created through the use of smart contract payments in various businesses. In order to promote the spread of smart contract settlement, it is extremely important to build a business scheme that complies with laws and regulations and to build a sales network that specializes in each market. We will continue our efforts to create As the demand for smart contract settlement is expected to increase along with the growth of the Web3 business in each industrial field, the three companies will work together to foster understanding among a wide range of people.


  • Smart contract settlement is a payment mechanism that enables efficient and secure payments on the blockchain.

Company Profile

Slash Fintech Limited(British Virgin Islands)

Location 4th Floor, Water's Edge Building, Meridian Plaza, Road Town, Tortola, British Virgin Islands VG1110.
Representative President Shinsuke Sato
Established November 23, 2021
URL https://slash.fi/
White paper https://slash-fi.gitbook.io/docs/whitepaper/slash-project-white-paper
Twitter https://twitter.com/SlashWeb3

SB Payment Service Corp.

Location Tokyo Port City Takeshiba Office Tower, 1-7-1 Kaigan, Minato-ku, Tokyo
Representative Jun Shinba, President and CEO
Established October 1, 2004
Business content Payment service, collection agency and corporate calculation office work, acquiring (card merchant business) business, issuing (card issuing business) business
URL https://www.sbpayment.jp/
Inquiries about payment services https://www.sbpayment.jp/contact/?argument=3qe9Sa9A&dmai=a5d1c838fbaef4

Caica Exchange Co., Ltd.

Location 5-11-9 Minami Aoyama, Minato Ward, Tokyo
Representative 5-11-9 Minami Aoyama, Minato Ward, Tokyo
Established April 12, 2016
Business content Crypto asset exchange business/financial instruments business
URL https://zaif.jp/

Inquiries from the media regarding this matter

Public Relations Officer SB Payment Service Corp.

Inquiry form https://www.sbpayment.jp/internal/public/index.php