MYAKU-N! (Digital Stamp Rally)

Service Provider Name

  • SBI Holdings, Inc.

As a service that participates in data utilisation initiatives, this service has conducted a VPIA in order to increase the transparency of data handling. In addition to the excerpts from the VPIA report, in which the service provider has assessed the benefits and privacy considerations when using their service, the results of a third-party assessment of the VPIA report are also available on this website. Please review this information for your reference when using this service. Click here to learn more about the VPIA.

This service provider has conducted its own assessment of the value of the service, its data handling practices and its measures against the anticipated risks. The following are the excerpts from the report.

1. Service Values

(1)Service Outline

This service is designed for visitors participating in the “Digital Stamp Rally” organised by Japan Association for the 2025 World Exposition. Visitors can earn NFT stamps (MYAKU-N!) by using the EXPO 2025 Digital Wallet app and scanning the QR codes on the stamp stands located at the pavilions on the Expo site (Yumeshima Island).
They can also earn NFT stamps (MYAKU-N!) at the virtual site, based on their history of visits to the pavilions in the Virtual Expo.

*EXPO 2025 Digital Wallet: Mobile app-based service aimed at increasing public awareness of the Expo’s initiative to promote a cashless society, building up momentum for the Expo before its opening, and facilitating people’s understanding of the Expo’s themes of “digital” and “action for the future,” as well as their involvement in the Expo​

Functions Provided

List of pavilions where users can earn stamps for their visit history

By pressing ‘Acquire’ button, an NFT stamp of the relevant pavilion image will be granted to users who meet the acquisition conditions.

(2)Service Benefits

Benefits that can be provided to individual users
Provide experience of acquiring NFT imagesUsers can experience acquiring rare NFTs by earning NFT stamps (MYAKU-N!) as rewards in the stamp rally.
Inclusive​ (Provide opportunities to experience the Expo anytime, anywhere)Even if the user does not go to the Expo site, they can earn stamps at the virtual site based on their history of visits to the pavilions in the Virtual Expo.
Benefits that can be provided to society
Increase awareness of NFTsBy enabling users to experience both acquiring and creating NFTs through the Expo, the service will help increase awareness of NFTs in society.
Experiencing the NFT service “MYAKU-N!” will help reduce people’s psychological barriers to blockchain-related technology and digital art, thereby increasing their understanding of new technologies.

2.Data Handling

(Data to be acquired and the purpose of use)

Data to be acquired

 ⚫︎ : Data to be acquired via ExpoID data linkage  : Data to be acquired directly from the user

 ⚫︎ : Data to be acquired via ExpoID data linkage
  : Data to be acquired directly from the user

  • Digital Wallet ID, ExpoID registered information (Universally Unique Identifier (internal ID for unique user identification))
  • Agreement to data linkage  
  • Users per room or room patterns based on number of separate visits
    (user’s history of visits to the pavilions in the virtual Expo) ⚫︎
Purpose of use
  • To grant NFT stamps (MYAKU-N!) to users with a visit history

3.Major Risk Measures

_MeasuresDatails
1Posting acquisition conditions for NFT stamps (MYAKU-N!)When determining whether the user qualifies for the acquisition of NFT stamp (MYAKU-N!), if the user has not met the acquisition conditions, they will be redirected to a page notifying them of the failure to acquire the stamp, along with guidance that the acquisition is not possible. Additionally, the conditions for acquiring the NFT stamp (MYAKU-N!) will be displayed on the same page.

Third-party VPIA Community members assess the VPIA report from their own perspective on whether the report explains the details in a way that users can understand. Click here to learn more about the VPIA Community.

(with the titles omitted and the names listed in Japanese syllabary order)

OKUHARA Sanae

Affiliation:

  • Director, Research Institute for Consumer Affairs, Nippon Association of Consumer Specialists
  • Director, Accredited Personal Information Protection Organization
    Administrative Office, Foundation for Promotion of Digital Economy and Community

Category of Viewpoints:Consumer

The stamp rally is a straightforward service that provides the added benefit of making the visitor experience even more enjoyable.
In addition to the fun of collecting stamps at the stamp stands in participating pavilions, those unable to visit the physical site can also collect stamps by visiting the pavilions on the virtual site. This is a commendable feature, as it allows more people to enjoy the Expo literally “anytime, anywhere”.

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Is the overview of the service understandable?

Are the benefits provided by the service understandable?

Is the overall picture of the service’s data handling understandable?

Are acquired data items and purpose of use understandable?

Are the risks anticipated from the user’s perspective understandable?

Are the countermeasures against anticipated risk understandable?

KATIRAI Amelia

Affiliation:

  • Assistant Professor, Institute of Humanities and Social Sciences, University of Tsukuba

Category of Viewpoints:Society and Ethics

This service has been developed in conjunction with the Digital Stamp Rally organised by the Japan Association for the 2025 World Exposition. It is therefore recommended that users also refer to the Digital Stamp Rally assessments regarding privacy considerations.

Read More

Is the overview of the service understandable?

Are the benefits provided by the service understandable?

Is the overall picture of the service’s data handling understandable?

Are acquired data items and purpose of use understandable?

Are the risks anticipated from the user’s perspective understandable?

Are the countermeasures against anticipated risk understandable?

SAKUMA Hiroshi

Affiliation:

  • Impact Officer at Global Shapers Community Osaka Hub, the World Economic Forum
  • Specially Appointed Researcher at the Social Solution Initiative, Osaka University

Category of Viewpoints:Youth

I have gained a good understanding of the Digital Stamp Rally officially provided by Japan Association for the 2025 World Exposition. While I wondered whether some visitors might not be familiar with the mechanisms and nature of NFTs, I felt there was no doubt that visitors would enjoy the service as a memorable part of their visit to the Expo. The report outlines the anticipated risks of the website and the countermeasures against those risks as a service supporting the Digital Stamp Rally organised by the Association. I found that these risks and countermeasures were carefully considered to ensure users can enjoy the service with peace of mind, within the scope outlined in the report.

Read More

Is the overview of the service understandable?

Are the benefits provided by the service understandable?

Is the overall picture of the service’s data handling understandable?

Are acquired data items and purpose of use understandable?

Are the risks anticipated from the user’s perspective understandable?

Are the countermeasures against anticipated risk understandable?

TSUNODA Mio

Affiliation:

  • Global Shapers Community Osaka Hub, the World Economic Forum
  • CEO, Darajapan Inc.

Category of Viewpoints:International

The details of the service were clearly organised in the report, covering the data sources, the purpose of its use, and the anticipated risks, which allows users to fully understand the overall picture of the service from their perspective. It is expected that the measures will be further clarified, with detailed consideration and adjustments made from the user’s perspective to improve the service.

Read More

Is the overview of the service understandable?

Are the benefits provided by the service understandable?

Is the overall picture of the service’s data handling understandable?

Are acquired data items and purpose of use understandable?

Are the risks anticipated from the user’s perspective understandable?

Are the countermeasures against anticipated risk understandable?

NOBUTOMO Hiroyuki

Affiliation:

  • Project Researcher, Tokyo University Interfaculty Initiative in Information Studies

Category of Viewpoints:Data Linkage

The stamp rally is an effective service that encourages visitors to explore the venue independently, and the content of the service provided was fully understandable. Additionally, I found that offering NFTs as an incentive is an innovative initiative. However, considering the general level of user literacy, I believe more effort should be made to explain the appeal of NFTs in a clearer and more accessible manner. Furthermore, given the way the data is handled, privacy risks are considered to be minimal.

Read More

Is the overview of the service understandable?

Are the benefits provided by the service understandable?

Is the overall picture of the service’s data handling understandable?

Are acquired data items and purpose of use understandable?

Are the risks anticipated from the user’s perspective understandable?

Are the countermeasures against anticipated risk understandable?

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