# Cross-Chain Designs Abandon Pooled Custody

Because pooled lockup contracts concentrate the losses, cross-chain transfer designs keep migrating away from locking assets and minting wrapped tokens toward schemes that prove control of addresses or settle atomically, so the competitive frontier in interoperability becomes custody structure rather than transfer speed or fee level.

- Conviction: 41 / 100 (weakening)
- 7-day move: +1
- Horizon: Emerging (watchlist)
- Tracking since: 2026-08-20T00:00:00.000Z
- Last updated: 2026-08-28T06:23:07.647Z
- Canonical: https://polylog.news/crypto/trends/bridge-custody-designs-abandon-pooled-lockups
- Publisher: Polylog
- Affected regions: Global

## Recent score history

- 2026-08-27: 42
- 2026-08-28: 41

## Recent evidence

- [confirms] Attacker Hijacks Delegate Rights on The Sandbox's Cross-Chain Token and Mints Unbacked SAND (2026-08-23): The Sandbox suspended its bridges to Base and BNB Smart Chain after unbacked SAND was minted on the cross-chain token, with roughly $675,000 extracted. The incident again locates the loss in the mint-and-bridge representation of an asset rather than in transfer speed or fees, strengthening the case that custody structure is the competitive variable in interoperability.
- [confirms] MANTRA's Blockchain Stays Halted After an Upstream Dependency Exploit (2026-08-22): The Base bridge router was drained by a forged cross-chain message, again concentrating the loss at the pooled routing contract rather than at either endpoint. Each such drain raises the design pressure toward atomic settlement or proof-of-control schemes that hold no pooled balance to steal.

2 more evidence entries, the full score history, the conviction-driver timeline, and affected assets are for subscribers: https://polylog.news/pricing