Vitalik Buterin Takes the Opposite Side of an AI Bitcoin Crash Forecast
Ethereum co-founder Vitalik Buterin has pushed back against a prediction that artificial intelligence could cause Bitcoin to lose at least half of its value within the next two years.
The forecast came from angel investor and Doom Debates podcast host Liron Shapira, who argued that increasingly capable AI could undermine assumptions surrounding Bitcoin’s security and robustness. Shapira said he had 50% confidence that BTC would experience a 50% or greater crash within two years because AI could challenge the guarantees that people have traditionally associated with the network.
Shapira published the prediction in a post on X, writing:
“I claim (50% confidence) that BTC prices will crash 50%+ in the next 2 years because of AI undermining what people imagined were its security or robustness guarantees.”
Buterin responded roughly half a day later, saying he takes “the opposite side of that (stance).” His response was not framed as a conventional market prediction. Instead, he focused on the difference between vulnerabilities that can be repaired through software and infrastructure upgrades and fundamental cryptographic failures that could require broad agreement among Bitcoin participants.
Buterin Separates Bitcoin’s Risks Into Different Categories
Buterin said he is “quite optimistic about cybersecurity in the long term” and identified the transition period as the primary concern.
His argument is that Bitcoin could deal with many potential AI-related security problems without requiring changes to the network’s underlying social rules. He specifically said he expects “BTC to handle at least any issues that do not require social consensus well.”
That distinction is important. A vulnerability involving Bitcoin clients, the network layer or mining-pool infrastructure could potentially be addressed by developers, node operators and other participants upgrading their software. Buterin specifically pointed to network-layer hacks as an example of an issue that could fall into this category.
By contrast, a fundamental failure involving Bitcoin’s hashing assumptions or proof-of-work would represent a much more serious scenario. Buterin described the probability of “actual breaks on hashes or PoW” as tiny.
For readers less familiar with Bitcoin, proof-of-work is the mechanism that allows miners to compete to add blocks to the blockchain. Hashing is the cryptographic process used extensively throughout the system. A fundamental break in those assumptions would be materially different from fixing an ordinary software vulnerability.
Buterin Says His Existing Holdings Already Represent the Bet
Rather than proposing a formal wager with Shapira, Buterin suggested that his existing cryptocurrency exposure already gives him substantial financial exposure to the outcome.
He wrote:
“I would offer a bet, but given what my holdings are, I’m basically taking this bet (I assume you believe the same re ETH) with ~90% of my net worth already.”
The statement does not describe a newly opened 90% position. Instead, the argument concerns his existing holdings, which the source says are mostly ETH. Buterin also highlighted an important point about the underlying technology: if the type of cryptographic failure being discussed were serious enough to undermine Bitcoin at the hash level, Ethereum could face related consequences because the two ecosystems depend on cryptographic assumptions as well.
That is why Buterin’s response extends beyond the question of Bitcoin’s price. His position is fundamentally about whether advances in AI will make modern cryptography and blockchain security unreliable faster than the broader technology community can adapt.
AI Advances Are Also Driving New Cryptography Research
Buterin expanded on the subject in a separate discussion, pointing to the rapid development of new techniques involving SNARKs and fully homomorphic encryption (FHE).
SNARKs are cryptographic proof systems that can allow information to be verified without requiring all of the underlying computation to be revealed. Fully homomorphic encryption, meanwhile, is designed to allow computation to be performed on encrypted information without first decrypting it.
Buterin highlighted the pace of new developments in these areas, particularly during 2026, as evidence that cryptography can continue evolving when older assumptions become less reliable.
His broader argument was summarized with the phrase “hard problems are abundant.” In other words, advances that threaten one cryptographic assumption can also create incentives for researchers to develop new techniques and security models.
The same concern has also influenced Ethereum’s development priorities. The source notes that Ethereum’s roadmap was overhauled on August 10, with quantum safety moved to the top of the list as concerns about future cryptographic threats gain greater attention.
Bitcoin Remains Near the $80,000 Level
The debate comes while Bitcoin is trading around the $80,000 area.
According to the source, BTC was near $80,000 after reaching a three-month high of $82,239 the previous week. Bitcoin subsequently struggled to break through a resistance area between approximately $80,335 and $82,239 during the weekend.
The price action provides the immediate market backdrop for the debate, but neither Buterin nor Shapira is presenting the recent trading range as proof of their respective arguments. Shapira’s forecast is focused on a potential AI-related deterioration in Bitcoin’s perceived security over a two-year period, while Buterin’s response centers on whether technological threats can be addressed before they become fundamental failures.
Bitcoin Whales Continue to Accumulate
The source also points to activity among larger Bitcoin holders as another part of the current market picture.
According to CryptoQuant, wallets holding at least 100 BTC accumulated approximately 60,000 BTC during August. The reported accumulation was roughly equivalent to the amount sold by smaller wallets over the same period.
That data does not establish whether large holders agree with Buterin’s assessment of AI risks, but it provides useful context around Bitcoin ownership trends while the debate over future technological threats continues.
The reported whale accumulation also stands in contrast to the idea that the market is uniformly pricing in an imminent AI-driven collapse. However, accumulation data alone cannot determine where Bitcoin’s price will move in the future.
Why the AI Debate Matters for Bitcoin
The disagreement between Shapira and Buterin ultimately centers on a difficult question: Could AI advance quickly enough to undermine the cryptographic foundations of major blockchain networks before those networks can adapt?
Shapira’s argument emphasizes the possibility of a confidence shock. His wording focuses not only on whether Bitcoin’s code could literally fail, but also on whether AI could undermine what users and investors believe about the network’s security. Under that scenario, Bitcoin could theoretically face a major repricing even before a catastrophic technical exploit occurred.
Buterin takes a more segmented approach. He distinguishes fixable vulnerabilities in software and network infrastructure from deeper failures involving hashing or proof-of-work that could require changes supported by broad social consensus. His confidence that the latter scenario remains highly unlikely forms the basis of his opposing view.
The discussion therefore extends beyond a simple Bitcoin price prediction. It raises broader questions about how quickly blockchain developers can respond to advances in artificial intelligence, how cryptographic standards evolve and whether decentralized networks can coordinate effectively when faced with entirely new technological threats.
For additional context on Buterin’s broader views, the original Doom Debates discussion with Vitalik Buterin and his related X post on the AI and Bitcoin forecast provide the primary discussion points. His separate comments on cryptographic developments are available in Buterin’s SNARK and FHE discussion.
What the Debate Means for Crypto Security
The exchange highlights a key issue for the cryptocurrency industry: blockchain security is not necessarily static.
As computing capabilities improve, networks may need to update software, cryptographic methods and infrastructure to maintain their security assumptions. Buterin’s comments suggest that the ability to adapt could be just as important as the strength of the cryptographic systems being used today.
For Bitcoin, the distinction between a software-level vulnerability and a fundamental break in proof-of-work is particularly important. The former could potentially be addressed through upgrades, while the latter could involve much deeper technical and governance questions.
For now, the disagreement remains a debate rather than a demonstrated security event. Shapira has presented a probabilistic forecast of an AI-driven Bitcoin crash, while Buterin says his own existing cryptocurrency holdings already leave him heavily exposed to the opposing outcome. The debate reflects a broader conversation about whether artificial intelligence represents an approaching threat to blockchain cryptography or a challenge that decentralized networks will have time to adapt to.
