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Onchain: Uptober is here

October 8, 2025
Naomi
AuthorNaomi
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Onchain: Uptober is here

Happy BTC all-time high last weekend to all those who celebrate. That's not the only thing that happened.

Story One

Adopting the best of TradFi?

Have you ever had your banking app tell you that you ordered $150 worth of chicken at Nando's at the other end of London? Happened to me once. Wasn't me, so I instantly blocked my card and got the transfer reversed.

Nothing against Nando's marketing, crypto could learn from it

Anyone who has ever experienced sending money to the wrong address or having their cards hijacked can appreciate the power of such a setup. Yet, despite millions of dollars being lost in crypto, reversible transactions remain largely untouched. 

It makes sense. In TradFi, you have legal frameworks and institutions that'll settle any disputes; in crypto, there's no such thing. It also stands in inherent tension with the idea of immutability.

Nevertheless, for mass adoption, reversibility is a sexy feature. Who better to bring it up again than Circle, the stablecoin issuer whose entire business is more Fintech than crypto? Their team is considering the possibility of enabling reversible transactions.

Supporters of reversibility point to benefits for scam victims, while critics highlight that it'd be nearly impossible without centralizing power. ICYMI, Circle isn't decentralized to begin with, so I wouldn't worry too much there.

Takeaway: Whatever you think of Circle's business, at least they are aware of the problems faced by ordinary people when managing their finances. In that, they're ahead of the majority of loud people on CT.

Story Two

All good things come in threes

That's a German saying originating in the Middle Ages, used to justify when things happen thrice. Don't be fooled, though; not all such things have to be good. Take Abracadabra, a DeFi protocol and issuer of a stablecoin called Magic Internet Money (MIM). Just last week, they had the third magic money is gone moment.

Last thing the smart contract sees before getting exploited

A hacker exploited a flaw in the protocol function, bypassing the usual solvency checks to withdraw $1.8 million worth of MIM. To obfuscate their trail, the hacker used Tornado Cash to fund and later mix the funds he'd stolen. It doesn't sound like a lot, but in relation to the total value locked of $154 million, it's also not nothing.

The good news is that none of the users' funds had been impacted. Abracadabra hasn't commented on the event yet, except to state that they have addressed the flaw and are reviewing internal processes to ensure this won't happen again.

Takeaway: It sure isn't a good look when a DeFi protocol gets exploited three times in less than two years, memetic name aside. I, for one, wouldn't feel confident parking my money there.

Story Three

Polymarket gets serious competition

The business books might have been right that the first-mover advantage is a myth, especially when the second-movers learn from your mistakes. Crypto rallied behind Polymarket during the election as one of the first crypto products to reach beyond the usual crypto user crowd. Still, there's now a serious new contender in town who's much less concerned with crypto values, and more with world domination: meet Kalshi.

Kalshi is a US-regulated business that started as a traditional prediction market, adhering to all the KYC, AML, and other due diligence requirements that come with it. Recently, however, the platform has heavily pushed into crypto, to the point of starting KOL wars to overtake Polymarket's mindshare.

X

The numbers speak for themselves. Last year, Kalshi held 3.1% of global prediction market volumes, a number that has shot up to 62.2%. This growth is aided by joint initiatives with crypto networks such as Base and Solana to give out grants, and integrations with Finance Bros' favorite pastime: Bloomberg Terminal. 

Takeaway: I get it. In this economy, there's really not much recourse other than gambling for the average paycheck-to-paycheck labourer. Predict responsibly.

Fact of the week: If you're really into Nandos, you might want to put Manchester on your list of places to visit. It's the city with the highest Nandos-to-population density ratio. Enjoy!

Naomi for CoinJar


Don’t invest unless you’re prepared to lose all the money you invest. This is a high‑risk investment and you should not expect to be protected if something goes wrong. Take 2 mins to learn more.

Cryptoassets traded on CoinJar UK Limited are largely unregulated in the UK, and you are unable to access the Financial Service Compensation Scheme or the Financial Ombudsman Service. We use third party banking, safekeeping and payment providers, and the failure of any of these providers could also lead to a loss of your assets. We recommend you obtain financial advice before making a decision to use your credit card to purchase cryptoassets or to invest in cryptoassets. Capital Gains Tax may be payable on profits.

CoinJar’s digital currency exchange services are operated in the United Kingdom by CoinJar UK Limited (company number 8905988), registered by the Financial Conduct Authority as a Cryptoasset Exchange Provider and Custodian Wallet Provider in the United Kingdom under the Money Laundering, Terrorist Financing and Transfer of Funds (Information on the Payer) Regulations 2017, as amended (Firm Reference No. 928767).

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Cryptoassets traded on CoinJar UK Limited are largely unregulated in the UK, and you are unable to access the Financial Service Compensation Scheme or the Financial Ombudsman Service.

We use third party banking, safekeeping and payment providers, and the failure of any of these providers could also lead to a loss of your assets.

We recommend you obtain financial advice before making a decision to use your credit card to purchase cryptoassets or to invest in cryptoassets. Capital Gains Tax may be payable on profits.

CoinJar’s digital currency exchange services are operated in the UK by CoinJar UK Limited (company number 8905988), registered by the Financial Conduct Authority as a Cryptoasset Exchange Provider and Custodian Wallet Provider in the United Kingdom under the Money Laundering, Terrorist Financing and Transfer of Funds (Information on the Payer) Regulations 2017, as amended (Firm Reference No. 928767).

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