Findings · 2026-11-12
Tether printed a billion. Then what?
"Tether just minted, pump incoming" is one of the oldest signals in crypto. We collected every USDT mint on Ethereum and Tron since 2017 and tested it.
The claim. “A large USDT mint means fresh money is about to buy Bitcoin.”
What we found. It lost in the first half of the data and gained in the second, and the gain does not survive basic checks.
What we measured
Tether records every new batch of USDT on the blockchain the moment it is created. We collected all of them from Ethereum and Tron: 515 mints, worth about $265 billion in total.
The rule, written down before any mint data was downloaded: whenever at least $1 billion of USDT was minted within 24 hours, buy Bitcoin and hold for 72 hours.
What happened
From 2020 to September 2023 the rule fired 62 times and lost 0.77% on average. From then until now it fired 91 times and gained 0.83% on average. A signal that points one way for three years and the other way for the next three is not a signal.
The later gain is also fragile. Assume slightly worse trading costs and it stops being statistically meaningful. Remove the five best weeks and most of it is gone. And Bitcoin was rising through much of that period, so buying on random days made money too.
Two other versions failed as well: comparing each week's net issuance with its usual level, and buying altcoins instead of Bitcoin after a big mint.
Why it does not work
A mint is Tether stocking its shelves. It is created when customers have already asked for dollars to be converted, which tends to happen after prices have started moving. The mint follows the demand. It does not announce it.
How it was tested
- USDT Issue events read from the Ethereum and Tron blockchains through free public APIs, November 2017 to August 2026.
- Bitcoin futures prices from 2020. Costs: 0.107% taker fees plus real funding; stress test with 0.2% added.
- Rules locked 11 November 2026, before the mint data was downloaded. Data split at 20 September 2023.
Research on past data, not financial advice. Every test we run, failures included, is on the Proving Ground.