Peer, a ZK-powered fiat–crypto bridge, launched its Disputes Portal, an automated system to protect liquidity providers from fiat chargeback fraud. The issue lies where takers pay in fiat, receive USDC onchain, then reverse the fiat payment. The dispute portal allows Peer LPs to submit the disputed transaction and the payment platform's email. Using DKIM verification, the system proves if the email is authentic, and the protocol cross-checks the amount, date, and transaction ID against onchain records.

If a dispute is approved, the attacker's wallet and linked wallets are blocked, payment methods are revoked, and refunds are triggered. Each case permanently removes bad actors. The feature is live now, starting with Venmo.

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