New research on market inflows for stablecoins from Oct. 2017-present suggests Tether wasn't used to pump Bitcoin prices in 2017, contradicting previous reports
Colin Harper / Decrypt :
Context & Ripple Effects
The question of whether Tether minted unbacked coins to inflate Bitcoin has split researchers for years: a 2018 paper cited by the New York Times claimed a Bitfinex-based scheme drove at least half of Bitcoin's 2017 rally, and a follow-up WSJ-covered study put the manipulated share near 50%. A competing CoinDesk-covered study had already found no meaningful price impact, and this new inflow analysis from Oct. 2017 onward lands on that side.
The stakes go beyond academic scorekeeping: Tether spent this period under an SDNY probe while quietly watering down its 'always backed 1-to-1' claim, so every study either feeds or starves the manipulation case against it.
First-order effects
- The researchers behind the 50%-manipulation estimates now face a direct empirical challenge on their core dataset, weakening the strongest published evidence in the anti-Tether camp.
- Tether and Bitfinex gain a citable rebuttal just as the SDNY probe keeps the issuer's reserves under legal scrutiny.
Second-order effects
- Exchanges and funds that priced in manipulation risk when vetting USDT pairs have one less red flag to weigh, shifting due-diligence weight back onto the unresolved reserve questions.
- Critics will likely counter with new methodologies rather than concede, keeping the dispute alive in future peer review instead of settling it.
Third-order effects
- If inflow-based methods keep contradicting transaction-pattern studies, crypto market-integrity debates may hinge less on any single paper and more on which measurement approach regulators accept as evidence.
- Tether's reputational battle is converging with its structural ones — self-issued loans in its own coin show the risk conversation moving from 'did it pump Bitcoin' to 'what backs the float'.
The trend: Stablecoin scrutiny is maturing from single-study accusations toward contested, methodology-driven evidence wars over whether Tether moved Bitcoin markets.