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Kei Oda is the head of Japan and the Asia-Pacific region for Quantstamp, a Web3 security firm that audits smart contracts and develops blockchain security solutions.

Kei spent 16 years trading bonds at Goldman Sachs before stumbling into cryptocurrencies out of boredom. He tells Magazine he was induced by the ability to trade Bitcoin and other assets around the clock.

He has since fallen down the rabbit hole, even finding a job in the industry.

1. How did you get involved in crypto?

So, I was actually a bond trader for 16 years before joining crypto. 

You know, we used to talk about Bitcoin when I was still trading bonds. I didn’t really understand it or believe in it, to be honest, but when I left my job in 2016 and tried to get into the startup space, what dawned on me once I left was that, having been a trader, you do have a long-term focus, but you also are very, very short-term in terms of how you trade, what you do day to day, minute to minute, and what ended up happening was, I would get bored very easily.



Essentially, my attention span became like a goldfish, and that was what working in finance kind of did to me. And so, I started trading Bitcoin.

Initially, it was simply to pass the time. And then, once I started researching Bitcoin, obviously, I thought the value proposition was extremely compelling.

And as part of that journey, I of course fell down the rabbit hole and started looking at crypto in general and specific assets like Ethereum, and it just sounded like a crazy, crazy proposition. You know, if it succeeds, obviously we’re talking about something that could be game-changing.

Kei Oda speaking

2. What do you think of the current Japanese crypto ecosystem?

I think that Japan has a pretty vibrant ecosystem, especially right now. It’s taken a while, but if you look at the trajectory of what Japan has gone through as a whole (the Mt.Gox and CoinCheck hacks, etc.), it has become very progressive.

In one sense, you know, allowing Bitcoin to be kind of used as currency, not obviously as an official currency or government currency, but it is an accepted payment method, and it’s actually legal to use it.

I think another kind of sector that seems to be quite exciting, at least for Japanese financial firms, is security tokens. I think that’s something that people are looking at. Security tokens globally — I don’t really hear that much about, [but] there are quite a few companies looking at them here in Japan.

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It almost feels like the Japanese crypto blockchain ecosystem has broken off a little bit from the rest of the world, or at least the cycles seem to be a little bit displaced in the sense that we’re starting to see very good interest and decent activity from big companies in Japan. Whereas I think that that probably happened a little bit earlier in other markets and has now kind of subsided.

3. What has held the Japanese crypto scene back?

I think at the bottom of it all is taxation. Taxation is still not very friendly here in Japan.

What the old regulation used to be is that if your Japanese startup issued a token here in Japan and you sold half of it to Japanese investors or the Japanese community, then you would have to pay tax on the revenue that you realized by selling tokens. But you would also have to pay tax on the 50% that you hadn’t sold.

Related: An overview of the cryptocurrency regulations in Japan

It’s even worse for personal taxes. In Japan, profits on crypto trading are taxed as extra-ordinary income, which can be as much as 55%. It’s not super friendly.

Now, if you compare that to Singapore, the basic tax rate is much, much lower at around 20% or something. Hong Kong, I think, is something similar. Dubai obviously has zero income tax. So, you’re talking about a pretty big difference financially for startup founders and entrepreneurs.

4. Do you think more companies will start setting up in Japan instead of opting for other Asian hubs?

The Japanese government is trying to be very progressive and forward-thinking about Web3.

They’re trying to be very active in getting talent to stay in Japan and also to come to Japan.

For example, the government is planning digital nomad visas. And I think that is going to be great for people who earn in other currencies and come to Japan, just because the yen has become so much more attractive (weakening against the United States dollar).

Japan is also attractive because there is a big market here, and there is a big market size that startups can capture here.

The Japanese crypto scene is quite active. However, what I find is that, when you go to a Japanese meet-up, there is a long presentation that you have to sit through. And at the end, they give you five to 10 minutes to try and network.

But you know — excuse my language — it’s kind of a shitshow.

So, what I did was help to create an event [Tokyo Blockchain Night] where there’s no presentation — no one’s trying to sell anything.

It’s simply like-minded people being able to have a drink and talk about crypto and look for investors, engineers, etc., or just make friends.

I think it’s something that helps people and goes along with the whole kind of ethos we have at Quantstamp, which is that we help people and pay it forward, and hopefully, something comes back to us.

Kei Oda

6. How did contagion from collapses like FTX impact the Japanese market?

The way FTX essentially blew up is kind of interesting in that FTX had a Japanese subsidiary; they bought a Japanese exchange called Liquid.

And because the regulations around asset custody in Japan were much stricter, FTX Japan wasn’t able to commingle funds or anything like that. So, actually, the Japanese entity was fully liquid and solvent. To the point where, if you were a Japanese customer of FTX, you essentially either have or will get all of your money back.

Whereas if you’re a client of FTX International, I don’t know what the update is there, but it’s not looking that promising.

I think the Japanese regulations that came in after the CoinCheck hack were probably much more strict than other jurisdictions; however, as a result of that, we’re now seeing an uptick in Japanese activity, to the point where the MUFG, the world’s biggest banking conglomerate in Japan, is going to launch stablecoins.

Brian Quarmby

Brian Quarmby discovered crypto in 2013 and instantly fell in love with the idea of decentralization. Brian has since lived and worked Asia and returned to Melbourne in late 2019. Brian is a lover of sport and art and is bullish on the potential for NFTs to transform artists lives in the near future.

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Taiwan lawmaker calls for Bitcoin reserve at national conference

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Taiwan lawmaker calls for Bitcoin reserve at national conference

Taiwan lawmaker calls for Bitcoin reserve at national conference

Taiwanese lawmaker Ko Ju-Chun has called on the government to consider adding Bitcoin to its national reserves, suggesting it could serve as a hedge against global economic uncertainty.

Ko, a legislator at-large in Taiwan’s legislative body, the Legislative Yuan, took to X on Friday to report that he had advocated Bitcoin (BTC) investment by the Taiwanese government at the National Conference on May 9.

In his remarks, Ko cited Bitcoin’s potential to become a hedge amid global economic risks and urged Taiwan to recognize the cryptocurrency alongside gold and foreign exchange reserves to boost its financial resilience.

Taiwan lawmaker calls for Bitcoin reserve at national conference
Source: Ko Ju-Chun

Ko’s announcement came shortly after the legislator held talks with Samson Mow, who advocates for Bitcoin adoption by states like El Salvador at his BTC tech firm Jan3.

Taiwan is an export-oriented economy

Ko highlighted that Taiwan is an export-driven economy that has experienced significant fluctuations in its national currency, the New Taiwan dollar, amid global inflation and intensifying geopolitical risks.

“We currently have a gold reserve of 423 metric tons, and our foreign exchange reserves amount to $577 billion, including investments in US Treasury bonds,” the lawmaker stated.

In a scenario of more intense currency volatility or potential regional conflicts, Taiwan may “very likely be unable to ensure the security and liquidity,” Ko continued, adding that Bitcoin could be a great addition to Taiwan’s reserves for several reasons.

Law, Investments, Taiwan, Samson Mow, Policy, Bitcoin Reserve
Ko Ju-Chun advocated for the adoption of Bitcoin by the Taiwanese government before the Legislative Yuan. Source: Ko Ju-Chun

“Bitcoin has been operating for over 15 years. It has a fixed total supply, is decentralized, and is resistant to censorship. Many countries are focusing on its hedging attributes. At the same time, in intense situations, it may not face the risk of embargo,” he said.

Bitcoin is not the only solution

Referring to many global initiatives considering Bitcoin adoption as a reserve asset, Ko stressed that he’s not advocating for Bitcoin as the “only solution” to rising economic challenges.

Instead, the legislator suggested adding a “small proportion of Bitcoin” into the diversified assets as tools for sovereign asset allocation and risk hedging, and backup capacity of Taiwan’s financial system.

Related: Trump tricked into pushing XRP for crypto reserve: Report

He previously suggested that Taiwan could allocate a maximum of 5% of its $50 billion reserve to Bitcoin in an X post on May 6.

Taiwan lawmaker calls for Bitcoin reserve at national conference
Source: Ko Ju-Chun

“When exchange rate risk and regional uncertainty increase, it is time to introduce new tools to construct a more flexible financial strategy framework,” Ko said, adding:

“As former Dean Chen Chong said, Bitcoin is the gun of the digital era. It may also be the gold of the digital era, the silver of the digital era. Or it could be gunpowder. A wise nation will not let weapons be in others’ hands.”

The news comes as Taiwan is emerging as a crypto-friendly jurisdiction, with the Financial Supervisory Commission pushing institutional trials of crypto custody services in late 2024.

Mainland China continues to maintain its hostile stance on cryptocurrency after imposing a ban on multiple crypto activities, including mining, in 2021.

Magazine: Adam Back says Bitcoin price cycle ’10x bigger’ but will still decisively break above $100K

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Germany seizes $38M in crypto from Bybit hack-linked eXch exchange

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Germany seizes M in crypto from Bybit hack-linked eXch exchange

Germany seizes M in crypto from Bybit hack-linked eXch exchange

German law enforcement seized 34 million euros ($38 million) in cryptocurrency from eXch, a cryptocurrency platform allegedly used to launder funds stolen after Bybit’s record-breaking $1.4 billion hack.

The seizure, announced on May 9 by Germany’s Federal Criminal Police Office (BKA) and Frankfurt’s main prosecutor’s office, involved multiple crypto assets, including Bitcoin (BTC), Ether (ETH), Litecoin (LTC) and Dash (DASH). The move marks the third-largest crypto confiscation in the BKA’s history.

The authorities also seized eXch’s German server infrastructure with over eight terabytes of data and shut down the platform, the announcement added.

eXch exchanged crypto without AML

In the statement, the BKA described eXch as a “swapping” service that allowed users to exchange various crypto assets without implementing Anti-Money Laundering (AML) measures.

The platform had operated since 2014 and reportedly facilitated about $1.9 billion in crypto transfers, some of which were believed to be of “criminal origin,” including assets laundered during the Bybit hack.

Germany seizes $38M in crypto from Bybit hack-linked eXch exchange
Example of flow of Bybit exploit funds moving through eXch and bridging back and forth between Ether and Bitcoin. Source: TRM Labs

“Among other things, a portion of the $1.5 billion stolen from the Bybit crypto exchange, which was hacked on Feb. 21, 2025, is said to have been exchanged via eXch,” the authorities wrote.

Multisig, FixedFloat among laundering cases

According to a post by crypto sleuth ZachXBT, eXch was also involved in laundering millions of funds from other crypto thefts and exploits, including Multisig, FixedFloat and the $243 million Genesis creditor theft.

Those were in addition to “countless phishing drainer services over the past few years with refusal to block addresses and freeze orders,” ZachXBT said.

Germany, AML, Crimes, Hacks, Policy, Bybit
Source: ZachXBT

ZachXBT was among the first security analysts to report on eXch’s links to laundering $35 million of crypto assets stolen from Bybit soon after the hack was confirmed.

Related: Hacken CEO sees ‘no shift’ in crypto security as April hacks hit $357M

“Lazarus Group transferred 5K ETH from the Bybit Hack to a new address and began laundering funds via eXch (a centralized mixer) and bridging funds to Bitcoin via Chainflip,” ZachXBT wrote in a Telegram post on Feb. 22.

eXch announced termination of services by May 1

After initially denying involvement in laundering funds from the Bybit hack, eXch eventually announced it would cease operations by May 1 in a Bitcoin Talk post published in mid-April.

“Even though we have been able to operate despite some failed attempts to shut down our infrastructure […], we don’t see any point in operating in a hostile environment where we are the target of SIGINT [Signals Intelligence] simply because some people misinterpret our goals,” it wrote.

Addressing the seizure, senior public prosecutor Benjamin Krause stressed the importance of action against “quick and anonymous opportunities for money laundering for any amount.”

“Crypto swapping is an essential component of the underground economy, used to conceal incriminated funds from illegal activities such as hacking or trading in stolen payment card data, thus making them available to perpetrators,” he said.

Magazine: Finally blast into space with Justin Sun, Vietnam’s new national blockchain: Asia Express

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Can a trade deal with Trump save Starmer?

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Can a trade deal with Trump save Starmer?

👉 Click here to listen to Electoral Dysfunction on your podcast app 👈

With Ruth away, Beth and Harriet are joined by Salma Shah, a former Conservative special adviser from 2014-2018 and now a political commentator.

They unpack Donald Trump’s surprise UK trade deal announcement and what it means for Sir Keir Starmer, who’s also landed a deal with India and is gearing up for key EU negotiations.

But while the global optics look strong, the domestic mood is tense. Harriet has some advice for the Labour backbenchers who are unhappy over welfare cuts and the winter fuel allowance policy.

Also – does Sir Keir need a hand with his comms?

Come and join us live on Tuesday 20 May at Cadogan Hall in London, tickets available now: https://www.aegpresents.co.uk/event/electoral-dysfunction-live/

Remember you can also watch us on YouTube!

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