# Ketju research: Polygon Bridge

- URL: https://riadefi.com/rejections/polygon-bridge/
- Verdict: rejected
- Type: Other
- Reviewed: 2026-08-19
- Last confirmed: 2026-08-19

## Research summary

Our research assessment is adverse. Polygon’s native PoS bridge is core infrastructure, not a source of portfolio yield, and every bridged claim depends on Polygon validator checkpoints and upgradeable bridge contracts. We separately rejected the Polygon chain because a Security Council can carry out an immediate emergency upgrade, with no enforceable user exit window before it acts. A $2.57B accounting balance does not outweigh that same control fact at the bridge layer.

## Observable review triggers

- Every regular and emergency bridge upgrade becomes subject to an enforceable on-chain delay of at least 7 days
- A permissionless exit proof remains usable during validator or checkpoint failure and completes a proposed-size test
- Polygon's chain verdict changes to approved or approved-with-limits without an active bridge-control review trigger

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Published by Ketju Research (https://ketjuresearch.com). Educational analysis only; not legal, tax, compliance, or investment advice.
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