Who Keeps the Record? A History of Land Registries, From 1086 to the Blockchain

What Really Guarantees That Something Is Yours?

When someone asks whether a house, a car, or a plot of land is yours, you almost never answer by showing them the object itself. You answer with a piece of paper, or a database lookup: a deed, a registry entry, a line in a land registry somewhere. Physical possession often matters far less than what a record says — a record that might sit in another city, or be kept by an institution that has existed for centuries.

This idea — that the real guarantee isn't in the object but in the record describing it — isn't new. For nearly a thousand years, it has been, quite literally, the foundation of how societies organize property. And its history is full of fires that wiped out entire archives, emperors who measured countries plot by plot, and, more recently, governments that tried storing those records on a blockchain.

The First Great Land Survey: The Domesday Book (1086)

At Christmas in 1085, William the Conqueror ordered something unprecedented in medieval England: an exhaustive count of who owned what. Royal commissioners traveled the country recording, village by village, every field, every farm, every mill, and even the number of pigs on each property, along with the name of its owner both before and after the Norman conquest.

The result, completed in barely a year, became known as the Domesday Book — after the biblical Day of Judgment — because, like that final verdict, its conclusions allowed no appeal. Whatever the book said, stood.

Nearly a thousand years later, the original document is still preserved at the UK's National Archives, and has occasionally been cited as evidence in legal disputes over ancient property boundaries. Few administrative records have proven so durable.

Napoleon Measures France, Plot by Plot

Seven hundred years later, France faced a similar problem with a far more ambitious solution. A law passed on September 15, 1807 ordered a full parcel-by-parcel land survey of French territory: every field, every orchard, every plot had to be measured and mapped, its owner recorded, so a fair land tax could finally be applied.

The project was enormous — it required surveyors crisscrossing the entire country — and took more than four decades to finish, not wrapping up until the mid-19th century. Even so, the result became the reference model for modern land registries across much of continental Europe.

When the Record Disappears

Not every registry has survived as well as the Domesday Book. On November 1, 1755, a devastating earthquake — followed by a tsunami and several fires — leveled Lisbon, destroying much of the city's notarial and property archives along with it. During the reconstruction led by the Marquês de Pombal, countless boundary disputes had to be resolved almost from scratch, without the paper trail that had once settled them.

Similar scenes played out across the 19th-century United States, where a string of county courthouse fires destroyed entire chains of deeds accumulated over generations. The answer came in 1858, on the other side of the world: Robert Torrens, in South Australia, designed a system — now known as Torrens title — in which ownership was no longer guaranteed by a pile of private papers, but by a public register backed directly by the state. If the register said the property was yours, the government stood behind it. The system later spread across much of the English-speaking world.

From Paper to Servers

Over the 20th century, most land registries were digitized. The promise was obvious: no more fires, no paper degrading over time, backups instead of a single irreplaceable copy.

But digital records carry their own fragilities — server failures, cyberattacks, migration errors — and the underlying problem remains exactly the one faced in 1086: someone has to be the custodian of the record, and that custodianship has to be trustworthy.

The Blockchain Land Registry Experiment: Sweden and Georgia

Between 2016 and 2017, two countries tested a different answer to that problem. Sweden's land registry authority, Lantmäteriet, partnered with several technology companies to trial real estate transactions recorded on a blockchain, aiming to cut the paperwork and the time between signing a sale and its official registration.

Around the same time, the Republic of Georgia became the first country to register land titles on a blockchain at a governmental scale, in partnership with the company Bitfury. The stated goal: make the registry more transparent and harder to falsify or lose, replacing trust in a single central database with public verifiability of the system itself.

What a Registry Actually Guarantees

Nearly a thousand years separate the Domesday Book from a Georgian blockchain, but the principle that makes a registry work hasn't changed all that much. It isn't the material — parchment, paper, or code — that provides the guarantee. It's three things: who stands behind the record, how transparent the process of updating it is, and whether anyone can verify its history without simply having to trust the word of whoever keeps it.

It's the same principle, on a much smaller scale, behind the ownership history for every day on Days Owners: every change of owner is logged, with dates, and can be checked. Nothing new is being invented here — it's simply a continuation of an idea that began, at the very latest, in England in 1086.

A Day, Too, Is a Record

Perhaps the only thing humanity has really done, every time someone has claimed something as their own, is look for a way to make that claim checkable. From royal commissioners recording pigs on parchment to a handful of distributed servers verifying a transaction, the underlying question has always been the same: who says so, and can I check it myself?