← UMA Protocolreviewed 2026-10-27 · 11 claims checked
Fact-check findings
What an automated fact-checker found when it re-read UMA Protocol against the sources the page cites. Only the most recent review is shown.
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These findings are produced by an automated reviewer, and its results vary between runs: the same page, checked three times on the same day, came back with 15%, 20% and 34% of its claims disputed, mostly because each run extracted a different number of claims. Treat what follows as leads, not rulings.
“Disputed” means the reviewer could not reconcile the claim with the evidence it cited. It does not mean the claim is false. “Unverifiable” means no reachable source settled it either way.
Nothing here changes the page on its own. A proposed correction is applied only after a human moderator approves it; until then the page reads as it did when reviewed.
unverifiable
4 claimsNo source the reviewer could reach confirms or contradicts the claim.
- #3[unverifiable][awaiting moderator]in section: March 2025 Ukraine Minerals Deal Governance Attack
“Analysts estimated the actor profited on the order of $100,000–$300,000 from the flipped resolution”
reviewerAnalysts estimated the actor profited $100,000-$300,000.Not found in two cited sources. The Orochi, CMC and Medium sources were not checked. The page already hedges the figure. - #6[unverifiable][awaiting moderator]in section: Voting Power Concentration
“found that as of mid-2026 nine anonymous crypto wallets controlled nearly half of all UMA voting power used to resolve Polymarket disputes”
reviewerBloomberg found nine wallets control nearly half of UMA voting power, with 6,400+ participating accounts, ~2,000 disputed contracts and ~230 in April 2026 worth over $1B.The source returned 403. This is not scored against the page. A Wayback copy exists in sources_used but I did not retrieve it. - #9[unverifiable][awaiting moderator]in section: Background: Founders and Protocol Legitimacy
“Lambur previously founded and sold the portfolio-management platform Openfolio.”
reviewerUMA was founded in 2018 by Hart Lambur and Allison Lu, both ex-Goldman traders; Lambur is Risk Labs CEO; Lambur previously founded Openfolio; whitepaper published December 2018.Founders and CEO claims are confirmed. Openfolio and the December 2018 whitepaper date (also used in timeline[0]) are not in the cited source. The timeline date 2018-12-01 is unverified. - #11[unverifiable][awaiting moderator]in section: Related Polymarket Controversy: April 2026 Ceasefire Market (Not a Direct UMA Oracle Manipulation)
“U.S. Representative Ritchie Torres sent a letter calling on the CFTC to investigate the pattern for possible insider trading”
reviewerOn April 7, 2026 about 50 new Polymarket accounts bet on a US-Iran ceasefire; Torres wrote to the CFTC and Blumenthal demanded answers.Not fetched in this review for lack of effort budget, so no verdict is offered. Cited sources are tier-1 official and news sources. The page explicitly says this is not a UMA oracle failure.
partially supported
4 claimsThe cited evidence supports part of the claim but not all of it.
- #1[partially supported][awaiting moderator]in section: March 2025 Ukraine Minerals Deal Governance Attack
“Reporting found that a single actor, operating across three accounts holding a combined 5 million UMA tokens (about 25% of the votes cast in that round), was able to push the resolution to 'Yes.'”
reviewerA single actor across three accounts holding 5M UMA (about 25% of votes) pushed the Ukraine minerals market to Yes.Supported by Coin360 but not by the tier-1 CoinDesk source cited first. The denominator (votes cast vs total voting power) differs between sources. - #4[partially supported][awaiting moderator]in section: Polymarket Overriding Its Own Oracle: Barron Trump / DJT Token Dispute
“UMA token holders voted 'No' by an overwhelming majority.”
reviewerUMA holders voted No by an overwhelming majority in the DJT/Barron Trump market and Polymarket said it would resolve Yes or refund Yes holders.The margin and the refund/Yes-resolution plan are not in The Block. The other three cited outlets (Yahoo, crypto.news, DL News) were not fetched, so they may support them. - #5[partially supported][awaiting moderator]in section: Polymarket Overriding Its Own Oracle: Barron Trump / DJT Token Dispute
“following the DJT token's roughly 17.5% price drop after the initial 'No' resolution”
reviewerThe DJT token fell about 17.5% and this allegedly influenced Polymarket's override.The figure is real, but the causal link is the page's own, and it is flagged as alleged. - #10[partially supported][awaiting moderator]in section: Background: Founders and Protocol Legitimacy
“As of September 2026, UMA's token traded around $0.38 with a market capitalization near $35 million and protocol TVL near $63 million, down sharply (over 99%) from its February 2021 all-time high”
reviewerAs of September 2026 UMA traded around $0.38 with a market cap near $35M, down over 99% from the February 2021 all-time high.Consistent in magnitude with the live data. The September snapshot, the TVL figure and the February 2021 ATH date could not be verified.
confirmed
3 claimsThe cited evidence supports the claim as written.
- #2[confirmed][no action needed]in section: March 2025 Ukraine Minerals Deal Governance Attack
“Polymarket publicly acknowledged the outcome was 'unexpected' but initially declined to treat it as a market failure warranting refunds.”
reviewerMarket moved from about 9% to 100% Yes between March 24 and 25, 2025, with a $750 USDC.e proposal bond, and Polymarket declined to treat it as a market failure warranting refunds.Core facts match CoinDesk. - #7[confirmed][no action needed]in section: UMA's Governance Reforms Following the Attacks
“Following the March 2025 Ukraine-deal incident, Risk Labs and the UMA community adopted a governance proposal (UMIP-189) introducing a 'Managed Optimistic Oracle V2' (MOOV2) for Polymarket-linked markets”
reviewerUMIP-189 introduced Managed Optimistic Oracle V2 restricting proposers on Polymarket markets to a whitelist, starting at 37 addresses, with a 95%+ accuracy criterion over six months.Confirmed from search results, not from the cited sources. The 'roughly 177 addresses by November 2025' figure was not verified, and the page already says it is unverified. - #8[confirmed][no action needed]in section: UMA's Governance Reforms Following the Attacks
“UMA also modified its gas-rebate program, effective June 2026, to exclude delegates operating within voting pools”
reviewerUMA's gas-rebate program excludes voting-pool delegates effective June 2026.The date matches timeline[9] (2026-06-15). Confirmed from a secondary mirror. The Medium source was not fetched.
How this fits together. The reviewer reads the published page and its cited sources and records one finding per claim. A human moderator decides whether each proposed correction is applied; those decisions, and the score changes they cause, appear in the audit log. Earlier review runs are not shown here; only the latest reflects the page as it stands.