Category: Publication

Unsolved Problems of Web3
Blockchain identity OpenID Publication

"Web3 Unsolved Problems" is on sale today (2/29). It includes "SBT", "DID", and "Fallacy of Variance". The Kindle version is available for immediate download. If you bring the paper version to BGIN, you may even get a signature from me or Professor Matsuo!

Nat 2024-02-29 No Comments

The new book "Unsolved Problems of Web3" is on sale today (February 2024, 2). It includes the paid article "The Fallacy of Variance" published on Nikkei XTech on February 29. It is available on Amazon and other sites. There is also a Kindle version. Also, the paper version will be available on BGIN Block #2 starting on Sunday...

Further display "Web3 Unsolved Problems" is on sale today (2/29). It includes "SBT", "DID", and "Fallacy of Variance". The Kindle version is available for immediate download. If you bring the paper version to BGIN, you may even get a signature from me or Professor Matsuo!
Your Privacy Publication

"JIS X 9252:2023 Information Technology - Online Privacy Notice and Consent" has been published

Nat 2023-01-23 No Comments

On Friday, January 1th, the JIS version of "ISO/IEC 20 Online privacy notice and consent", "JIS X 29184:9252 Information technology - Online privacy notice and consent" was published. I am the secretariat of the JIS drafting committee.

Further display "JIS X 9252:2023 Information Technology - Online Privacy Notice and Consent" has been published
Blockchain identity OpenID Publication

From centralized ID to decentralized ID, history repeats itself | Nikkei Crosstech

Nat 2022-08-03 No Comments

Following last week, the second part of the series "A thorough examination: Will blockchain bring happiness to humanity?" was published in Nikkei Crosstech. The article is titled "From centralized ID to decentralized ID, history repeats itself." Last time, we looked at the comparison between W3C DID and XRI, but this time we will finally look at OpenID...

Further display From centralized ID to decentralized ID, history repeats itself | Nikkei Crosstech
Nikkei XTECH: W3C standardizes decentralized ID standard, looking back at the history leading up to it
Blockchain identity Publication

W3C standardizes decentralized identity, a look back at the history of how it got there

Nat 2022-07-28 No Comments

Last week, I wrote an article for Nikkei XTECH about DID (Decentralized Identifier), a recommendation issued by W3C. It's the background to this technology that is attracting attention and is related to the popular Web 3.0/web3 and Web5. Even people who work with DID don't know much about it...

Further display W3C standardizes decentralized identity, a look back at the history of how it got there
Digital Identity
identity OpenID Publication

"Digital Identity: The Core of Cyber ​​Business that Managers Don't Know" has been published

Nat 2021-07-16 No Comments

My first book, "Digital Identity," was published by Nikkei BP on July 7th. You can purchase it from Amazon and other sites. I hope you will pick it up. Not only startups but also major companies are focusing on cyber business, but as the number of companies entering the market increases, the number of incidents and accidents is also increasing...

Further display "Digital Identity: The Core of Cyber ​​Business that Managers Don't Know" has been published
Unsolved problems of blockchain technology
Blockchain Publication

"Unsolved Problems in Blockchain Technology" has been published

Nat 2018-01-18 No Comments

"Unsolved Problems in Blockchain Technology," co-authored with Professor Matsuo of Georgetown University and others, has been published. It is available on Amazon and other platforms. I was in charge of the chapter. In this chapter, I go back to the paper to explain what Satoshi Nakamoto aimed for and what the Bitcoin blockchain is...

Further display "Unsolved Problems in Blockchain Technology" has been published
identity Publication

ID Business in 2015: From Vending Machines to Public Certification with a Single Card Hardcover – April 1, 2009

Nat 2009-04-01 No Comments

A book I co-authored with the Nomura Research Institute ID Business Project Team, "ID Business in 2015: From Vending Machines to Public Authentication with a Single Card," has been published by Toyo Keizai Inc. It is available for purchase on Amazon and elsewhere. I hope you will pick up a copy.

Further display ID Business in 2015: From Vending Machines to Public Certification with a Single Card Hardcover – April 1, 2009