Spotify asks Kalshi and Polymarket to remove its branding after manipulated streams influenced music-chart prediction markets and helped settle $3M in bets

Kalshi paid out before Spotify culled over 500,000 fake streams; the profitable surface was the settlement clock on a mutable Web2 data feed. Mango Markets logic moved off-chain: move the reference input, settle against it, fight over intent later, except Spotify charts do not give you an on-chain audit trail like MNGO’s October 2022 trades. Polymarket dodged the Todd leg because Malcolm Todd was not listed, but the playbook is now priced: a 2.5% long shot paid about 20x on Kalshi.

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