Blockchain was built on the noble principle of creating a system of value that was fair, secure, decentralised, and incorruptible. Crypto promised to protect people from the volatility of human error, from reckless governments, greedy bankers, and the decay of trust that defines our financial institutions.

For a time, it worked. We built code that didn’t lie; we created ledgers that couldn’t be tampered with; and we proved that finance could run on quantitative logic rather than human bias.

But a new kind of intelligence is emerging, one that will allow malicious actors to execute on autopilot and generatively infiltrate innocent users, what will become known as Artificial General Intelligence (AGI).

AGI is still some way off, but predictions suggest it could be in use as early as 2027, or at least propagating outwards without human knowledge at that point. Once in the open world, AGI is impossible to predict, as a chimp could not predict what a human will do next, nor can a human predict what AGI will do. However, assume these possibilities: this technology will have the power to decrypt and unlock blockchain-based currencies, learn how to crack cryptographic puzzles, run other AGI agents and rinse and repeat.

Paradoxically, the safest asset in the world will no longer be Bitcoin; it will be physical currency or items deemed as currency.

The Age of the Codebreaker

It is estimated that 68–74% of all cyber-attacks involve a human element, error, manipulation, or social engineering. Our entire security architecture has been designed around that premise: defend against people.

Smart contracts, encryption, and consensus protocols depend on predictable, rational behaviour, or protect against irrational actions. They are designed to survive attacks from individuals or organisations that rely on either quantity (bot networks) or quality (human intelligence), not both, nor novel vectors (such as novel exploits in math breakthroughs).

A near-sentient system changes that equation. It fuses the scale of automation with the intent of human-like intelligence. If weaponised, it could probe billions of attack vectors in seconds, rewrite its own code to evolve around defences, and destroy a financial system from the inside out.

We’ve seen the first state actor sponsored AI Agentic cyber espionage recently, and that is just from normal AI, not even AGI. Further reinforcing the point that AI is a powerful intelligence, and AGI will be on another level, unfathomable from the human’s perspective.

Crypto’s strength has always been its demand for continuous codebreaking. It exploits the one finite human resource, time. But AGI will erase that constraint. Time ceases to be a defence in the age of autonomy.

The End of Digital Trust

Trust is the foundation of money. Without it, no currency, crypto or fiat can survive. Blockchain gave us a new kind of trust, trust in code and mathematical truth.

We told ourselves that decentralisation would make corruption of the network improbable by humans. But we didn’t anticipate machine corruption, the rise of autonomous systems capable of penetrating those same decentralised defences.

Academic research already shows that generative AI can autonomously discover one-day vulnerabilities. It can exploit them faster than existing patching cycles. Combine that with the commercialisation of state-sponsored scamming. A $1 trillion illicit economy, according to the World Economic Forum’s Global Cybersecurity Outlook 2025. And you have a perfect storm for simple AI, not accounting for what AGI’s intentions may be.

The moment AI becomes self-directing and amoral when neutral, and outright immoral when viewed from a human perspective, but not a binary perspective (in the computer sense), the concept of secure digital value collapses. No wallet is safe if an AGI can learn every exploit in existence before the first patch is written. Or a new mathematical proof that defeats the difficulty of PoW chains like Bitcoin. Or has implanted itself in every device it can reach and simply transfers your assets away like a hacker.

No Wallet, DeFi protocol, or even Blockchain is safe if AGI wants to take a path of gathering financial resources to enact whatever plan it may develop. As AI becomes omnipresent, the irony is that the very technologies designed to control us by centralised power, digital IDs, central-bank digital currencies (CBDCs), and government backed stablecoins, may become vectors of vulnerability.

A Warning for CBDCs

A report conducted by the Department of Homeland Security recently stated that CBDCs can be susceptible to high levels of cybercrime. These include phishing scams and mass exchange rate manipulation. In an era of AGI, the rate at which these vulnerabilities can be exploited becomes tenfold.

When your savings live entirely inside a system that can be hijacked faster than you can blink, society will retreat to the one haven it knows it can trust: physical cash or cash-like equivalents. But honestly, if this happens, there isn’t much of a society left over at that point.

Cash or Bartering Will Be King (Again)

It sounds absurd, the idea that in an era of automated economies, humanoid robots, and algorithmic wealth managers, the safest thing you could own is a paper banknote. Yet that’s exactly where we’re headed if we go down a path of ‘unplugging’. We move off the grid to combat the AGI release, assuming we are still alive to do so at that point.

Cash can’t be hacked or reprogrammed. It doesn’t depend on the uptime of a network or the integrity of a wallet provider. It is the last financial instrument that exists entirely outside the reach of code. Yet in the scenario of AGI going rogue and being released into the world, the most likely scenario I predict is that the markets will see a slight flicker, almost as if a single global hedge fund blew up, or maybe a bit worse… Within minutes, markets around the world will react as assets gathered by the AGI are dumped and transferred for the purpose of AGI.

Although, paradoxically, if the AGI crashes the markets so badly, hacks billions in Bitcoin and sells it, takes over bank accounts, the cascading effect of a global crash on this order, would impart the effect of all its efforts to gather resources moot. So it cannot crash the market spectacularly. If AGI wants to use its resources in some way. If that is its plan, that is. Why pay a human when you can control a humanoid robot?

The lesson is uncomfortable… The more intelligent our systems become, the more valuable it is to hold something that isn’t correlated to the status quo. Hence, cash (assuming the government hasn’t destroyed the value of the currency) and currency-like items via bartering will be the new status quo in this post AGI world.

Can We Stop It?

The survival of blockchain-based finance will depend on merging on-chain verification with off-chain intelligence. AI must be used not just as an optimisation tool but as a shield. An intelligent custodian that monitors for synthetic behaviour, agent-driven manipulation, and abnormal transaction patterns.

Research conducted by Boston Consulting Group proposes autonomous agents, which could be used to detect and counter adversarial machine behaviour in real time. It’s a promising start, but still reactive, not preventative.

To protect digital value, critical financial infrastructure must incorporate hardware kill-switches, air-gapped recovery procedures, and circuit breakers independent of algorithmic consensus.

In a future where AI moves capital faster than humans can think, there must still be something that can say stop, instantly and irrevocably. This is the first path forward, when we are talking about normal AI and agentic AI as we know it today in 2025. We must fight fire with fire, and use AI agents to protect and attack, otherwise we are knights in armour on a battlefield against drones. This is all before AGI is released; then it becomes an arms race (if there is a competitor AGI) for the two to fight it out or join forces, because at that point, humans are only along for the ride.

The New Definition of Wealth

In the AGI era, wealth won’t be measured by what you own, but by what you can protect. Digital capital will remain essential, but it will need a new architecture that assumes non-human adversaries and responds autonomously. Regulation will never be able to move quickly enough to stop AGI, and even if it did, there remains the challenge of understanding training vs intent and rationally policing the difference between the two. The term ‘agentic state’ has never been so poignant.

Cash will therefore – in either local currencies, new currencies, or bartered items – become king again, not for efficiency, but for situational sovereignty. The markets of the future will be defined less by access and more by security, control, and locality.

AGI could one day manage every trade, optimise every yield, and eliminate every inefficiency if aligned for the good of humanity, but if malaligned AGI grows, the technology will become humanity’s own worst enemy.

This dilemma means a changed society, if there is even one left, that in order to operate needs to keep something tangible in its hands, a note, a coin, a battery, a 5.56 caliber bullet,  a reminder that security isn’t always a guarantee.

With physical currency, you sometimes let your immediate environment in, with digital money, you invite the internet in, at the speed of beyond trillions of operations a second, faster than a blink of an eye.

About the Author

Zach Burks is an accomplished blockchain developer with over a decade of experience in the Ethereum ecosystem. He has progressed the governing principles of Ethereum first-hand through his collaboration with the Ethereum Foundation on improving the ERC-721 standard, the cornerstone standard for all NFTs, and by authoring ERC-2981, the industry-defining on-chain royalties standard. Zach is also the mastermind behind Gasless Minting, which revolutionized the NFT creation process.

Learn more at mintology.app