It is hard to explain — not only to dummies — why I believe trust will be one of the most important virtues in the NEO era.

Because today, almost everyone understands the opposite.

Trust is for suckers.

You should not trust the media. You should not trust politicians. You should not trust business. You should not trust social media posts. You should not trust influencers. You should hardly trust anyone.

But when you come to my position in life, you maybe have one luxury: you can try to solve civilizational problems even when chances for success are low or look like a mission impossible.

This is what we were contemplating for the last few years, and now we are developing with a dedicated team gathered in COlab — COTRUGLI Business School Collaboration Lab.

We are developing Trust as a Protocol for the NEO era.

Engineered trust. Not trust as a feeling. Not blind trust. Not trust as a flock of geese has in the fog. Not “believe me because I say so.” Not “you must trust us.”

Trust as a protocol. We call it Cotrugli Ledger.

Before I explain what the Cotrugli Ledger is (in articles which follow this one), I want to start with a simple explanation of how trust as a trade protocol worked long before modern banking.

Why we are not reinventing the wheel.

Imagine you are a merchant in ancient India. You have valuable spices going to Egypt, thousands of kilometres away.

You stay at home.

The core problem is simple: How do you get paid?

There are no banks as we know them today. No internet. No credit cards. No SWIFT. No modern insurance.

Piracy is real. Sending gold with the ship is asking for it to be stolen.

You do not trust the buyer in Egypt. He does not trust you. Different coins, different languages, different rulers, different courts.

So what do you do?

You do not solve this with hope. You solve it with protocol.

One solution was the Hundi. Very simplified, Hundi was something like an old trade document, promissory note, or financial instruction.

You give gold or value to a trusted local issuer. He writes a document. The document says: pay the bearer of this document the sum of X. You send the document, not the gold. Someone trusted in another city pays against that document.

The gold does not need to travel. The document travels. The value moves because the network accepts the document.

This is already powerful. But the real magic was not the paper.

The real magic was the trust engine behind the paper.

What stops the issuer from stealing?

Reputation.

Not a nice reputation. Not PR reputation. Real reputation. Reputation as a weapon.

These people were part of tight merchant networks, families, guilds, communities, and trading houses.

If someone cheated once, he did not just lose one customer.

He lost the network. His name was finished. His family name was damaged. His future business was damaged. That is not soft trust. That is hard trust.

That is the name of the game and the game theory.

Make cheating so expensive that honesty becomes the only rational move.

This is what many people today do not understand.

Trust was never only about being good.

Trust was also an infrastructure. Trust was memory. Trust was accounting. Trust was document. Trust was network. Trust was punishment. Trust was future business. This is why these systems could work across distance, empires, languages, religions, and wars.

Prince could tax trade. But they could not easily break the network.

And here is the interesting part.

History rimes.

This logic never really died. In different forms, it still exists today as Hawala and similar informal value-transfer systems.

Migrant workers still use trust networks to send money faster and cheaper than banks in many cases.

So when I say Cotrugli Ledger, I am not saying we invented trust. I am saying the NEO era needs a new material for an old civilizational problem.

Ancient Hundi created trust through paper, reputation, social ties, accounting, and punishment.

Cotrugli Ledger engineering trust for the AI economy through digital receipts, authority, evidence, rules, verification, and replay.

Because in the AI economy, the question will not be only: Do I trust this business and person?

The question will be: Who acted? Under what authority? Based on what evidence? According to which rule? Can I verify it later? Can I prove what really happened?

That is trust as a protocol. Not trust for suckers.

Trust for serious people operating in a world where humans, companies, institutions, and AI agents will all act inside the same business battlefield.

The ancient merchant had Hundi. The NEO era needs Cotrugli Ledger.