Study: ~50% of bitcoin's price jump from March 2017 to March 2018 was due to influence of a manipulation scheme by one entity's account at Bitfinex using tether
Paul Vigna / Wall Street Journal :
Context & Ripple Effects
This study is the peer-reviewed confirmation of what researchers first flagged in June 2018, when they said a tether-driven campaign via Bitfinex may have accounted for at least half of bitcoin's run-up — a claim that immediately fed the DOJ manipulation probe homing in on Bitcoin, Tether, and Bitfinex later that year.
The evidence base is contested: follow-on work on stablecoin inflows published in April 2020 argued tether wasn't used to pump bitcoin prices in 2017, directly contradicting the earlier reports. That unresolved fight is why this finding matters — it lands in the middle of an active dispute over whether crypto's flagship rally was partly manufactured.
First-order effects
- Bitfinex and Tether face renewed legal exposure: their names are now tied both to the DOJ's price-manipulation probe and, per later reporting, to a separate DOJ inquiry into whether Tether executives committed bank fraud in its early stages.
- Bitcoin's price narrative takes a credibility hit — if half the 2017–2018 jump was engineered by one Bitfinex account, the 'organic adoption' story underpinning valuations weakens for holders and funds citing that period as proof of demand.
Second-order effects
- Exchanges and stablecoin issuers beyond Bitfinex inherit the scrutiny: with tether reportedly underpinning more than half of bitcoin trades and circulating supply around $62B by mid-2021, any adverse DOJ or SDNY finding ripples across every venue that lists tether pairs.
- Competing stablecoins and compliance-first exchanges gain a marketing wedge against tether, whose shady-aspects reputation has been catalogued even while it remains the dominant trading rail.
Third-order effects
- If regulators conclude that a single exchange account could move the market's benchmark asset, expect structural pressure for stablecoin reserve audits and cross-exchange trade surveillance — turning the crypto-legitimacy gap from a reputational problem into a compliance requirement.
- The contested research itself becomes part of the record: conflicting studies on tether's market impact mean future enforcement will hinge on which methodology regulators accept, shaping how market-manipulation claims in crypto are adjudicated.
The trend: Crypto markets are being forced to reconcile their founding rally with forensic accounting, as regulators and academics converge on whether tether-fueled trading was infrastructure or instrument of manipulation.