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Cows on a blockchain. That’s where we are now. Brazil’s B3 stock exchange — one of the largest in Latin America — recently helped a farmer in the country’s south secure a $19,600 loan using ten cows as collateral, stored virtually inside a blockchain-based system. It’s a small number by financial standards, but the point wasn’t the size of the loan. It was the proof of concept: living animals, each assigned a unique encrypted digital identity, used as bankable assets on a distributed ledger.
And people thought DeFi was already getting weird.
From Cattle to Uranium: The Wild Range of Tokenized Assets
Brazilian investment fund Target FIDC ran the cattle tokenization, giving each cow its own digital token tied to an encrypted identity. The setup let a farmer pledge livestock without physically moving the animals or dealing with the usual paperwork bottlenecks of rural lending. Although the initial deal was modest, the structure could scale. Livestock-backed financing is a massive market across South America, and if the model holds up legally and logistically, the $19,600 pilot could look very small very fast.
But cattle aren’t even close to the strangest thing being tokenized right now.
Tezos-backed metals.io is working on tokenizing uranium. Between November 2024 and July 2026, the platform logged $21.5 million in trading volume across 18,200 trades. Institutional adoption there stays cautious — uranium carries regulatory baggage that most asset managers don’t want near their portfolios — but the numbers are real and the trading is happening. Whiskey barrels are also in the mix. Scotch whisky gains value as it ages, and tokenization lets investors buy fractional shares in barrels they’ll never physically touch, collecting returns as the liquid matures inside a warehouse somewhere in Scotland. Thoroughbred racehorses are being split into digital shares too, making ownership accessible to people who can’t afford a six-figure animal outright.
It’s basically fractional ownership, but on-chain.
Fish, Farts, and a Burning Banksy
Not every tokenization attempt sticks. Brickken, a tokenization platform, got a proposal from a Chilean fish-processing company that wanted to issue tokenized debt linked directly to fish sales. The idea was genuinely creative — lenders would hold tokens representing a claim on sales performance, kind of like a revenue-based loan wrapped in blockchain. But the deal stalled. The problem wasn’t the concept. It was the execution: the structure still depended on traditional audits and commercial agreements, and those frameworks weren’t ready to support something that novel. The venture died before it launched.
Then there’s the fart NFT. Filmmaker Alex Ramírez-Mallis turned his own flatulence into non-fungible tokens during the pandemic, selling each for 0.05 ETH — roughly $85 at the time. It sounds like a joke, and it kind of was, but it sold. That’s the NFT market in one sentence, probably.
The art world got a more dramatic version of this. A group called Burnt Banksy bought a Banksy print — specifically Morons (White) — physically destroyed it, and minted an NFT of the destruction. The digital version sold for $382,000. The act sparked serious debate about what art ownership even means when the original is ash and the “real” version lives on a blockchain. No clean answer came out of it. The debate’s still going.
Music royalties went the same direction. DJ 3LAU and rapper Nas both offered streaming rights through Royal, a blockchain platform built specifically for music royalties. Fans could buy tokens tied to a song’s streaming income. The early interest was real. But the model ran into a hard wall: streaming platforms pay almost nothing per play, so the royalty tokens generating actual returns were rare. Mainstream traction never came.
Jack Dorsey’s Tweet and the Limits of Digital Collectibles
The NFT boom had no cleaner symbol than Jack Dorsey’s first tweet. Twitter’s co-founder sold it as an NFT for $2.9 million, and for a moment it felt like any piece of digital history could carry that kind of value. Then someone tried to resell it. The highest bid came in dramatically short of the $48 million asking price, and the gap between what Dorsey got and what the secondary market would pay said everything about the speculative nature of digital collectibles. The tweet still exists. The token still exists. The value, though — unclear.
Athletes got in on it too. Croatian tennis player Oleksandra Oliynykova auctioned advertising rights to a patch of skin on her arm as an NFT in 2021. The winning bidder got to pick a tattoo she’d display during tournaments. It’s a strange use case, but it’s not really different from a jersey sponsorship — just on-chain, and permanent.
What connects all of these — cows in Brazil, uranium on Tezos, a burning Banksy, a tennis player’s arm — is that tokenization doesn’t care much about what the underlying asset is. It cares about whether the asset can be assigned a unique identifier, tracked on a ledger, and transferred between parties without a mountain of paperwork. Sometimes that works cleanly. Sometimes the legal and audit infrastructure can’t keep up. And sometimes the market just doesn’t show up.
The B3 cattle loan closed at $19,600.
Frequently Asked Questions
How did Brazil’s B3 stock exchange use tokenized cows as collateral?
A farmer in southern Brazil used ten cows to secure a $19,600 loan through B3, with each cow assigned a unique encrypted digital token stored on a blockchain-based system via investment fund Target FIDC.
What was the trading volume on metals.io’s uranium tokenization platform?
Between November 2024 and July 2026, metals.io recorded $21.5 million in trading volume across 18,200 trades, though institutional adoption of tokenized uranium remains cautious.
