An investigation by blockchain analytics firm Bubblemaps has uncovered what analysts describe as statistically impossible trading patterns on Polymarket's crypto prediction markets, revealing 80 bets with a 98% win rate that experts say could expose U.S. military operations to foreign adversaries. The findings have prompted Congressional action, with Rep. Mike Levin and Senator Adam Schiff introducing the DEATH BETS Act to ban contracts tied to war and military conflicts.

Market Context

Polymarket has emerged as a dominant force in crypto-based prediction markets, processing more than $1 billion in wagers on geopolitical events alone this year. The platform gained significant public attention during recent Middle East tensions, with reports indicating civilians consulted the platform to decide whether to seek shelter during U.S. strikes on Iran. This mainstream usage has raised concerns that foreign governments and adversaries are monitoring the platform with equal scrutiny.

Analysis

Bubblemaps co-founder and CEO Nicolas Vaiman told CoinDesk that the accuracy of certain bets goes beyond statistical probability. "Luck alone cannot explain" the numbers, he said, pointing to nine connected accounts that collectively made more than $2.4 million betting almost exclusively on U.S. military operations before they occurred. The investigation revealed major high-conviction bets were placed days before the February 28 surprise attacks on Iran, including bets on the removal of its supreme leader and subsequent ceasefire announcement. To avoid detection, these traders allegedly placed smaller losing bets on February 20 to mask their positioning.

Vaiman warned that if analysts can identify irregular trading patterns, so can enemies of the United States. "The issue here is they can make war plans accordingly," he said. "Just to put it bluntly, this could potentially expose the lives of many people." The analyst also raised concerns about potential manipulation, suggesting governments could intentionally place bets to create false signals and mislead adversaries into miscalculating military responses.

A recent arrest highlighted the insider trading risks: Master Sergeant Gannon Ken Van Dyke, a U.S. Army Green Beret, made $400,000 on Polymarket betting on the Venezuela raid to extract President Nicolas Maduro—a raid in which he personally participated. Separately, academic research found that only 3% of "informed" traders drove prediction market accuracy, while 97% did not achieve statistical significance.

Polymarket has pushed back against insider trading allegations, stating it maintains strict rules against such activity and employs AI-powered surveillance alongside blockchain forensics to identify suspicious positions. Two weeks prior to Bubblemaps' public disclosure on May 18, the platform announced a partnership with Chainalysis to implement "Wall Street-grade supervision." Vaiman defended Polymarket's structural design while acknowledging the compliance challenge: "I don't want to dunk on Polymarket. Realistically, anybody can use a cheap VPN or buy a KYC'd account. That is not just a Polymarket problem. It is an internet-wide problem."

Key Numbers

- $1 billion+ wagered on geopolitical conflict predictions on Polymarket this year alone

- 98% win rate across 80 identified bets deemed statistically impossible by analysts

- $2.4 million+ made by nine connected accounts betting exclusively on U.S. military operations

- $400,000 made by Master Sergeant Gannon Ken Van Dyke on Venezuela raid prediction

- Only 3% of "informed" traders found to drive accuracy in academic study

- Feb. 28 identified as date of major Iran strikes that were correctly predicted in advance

What to Watch

Congressional hearings on the DEATH BETS Act will likely examine whether federal legislation can effectively regulate decentralized prediction markets operating across borders. Traders should monitor for any statements from Polymarket regarding enhanced compliance measures or potential restrictions on U.S. military-related contracts. The investigation's broader implications for crypto market surveillance could set precedents for how blockchain analytics firms collaborate with regulators, while raising questions about the intelligence risks posed by transparent betting markets when conflicts involve American personnel and operations.