Multichain bridge exploit on 2023-07-07 ($210M reported)
Bridge exploit on Fantom, Ethereum, BNB Chain, Polygon, Arbitrum, OP Mainnet, ZKsync Era, 7 Jul 2023. Reported loss $210M. Last verified 4 Nov 2026.
critical
Reported loss
$210M
as reported by the sources
Recovered
-
nothing reported
Status
Unknown
updated 26 Oct 2026
Date
Fantom, Ethereum, BNB Chain, Polygon, Arbitrum, OP Mainnet, ZKsync Era, other
Summary
On 2023-07-07 assets worth over US$127 million were moved out of the Multichain cross-chain bridge; the Fantom Foundation put total losses across chains such as Fantom, Ethereum, BNB Chain and Polygon at over $210 million, and a Singapore High Court judgment records Fantom's claim that the Multichain CEO controlled the bridge assets.
- Protocol
- Multichain
- Type
- Bridge exploit
- Reported loss
- $210,000,000 source: blog.fantom.foundation ↗
Facts and where they come from
| Fact | Value | Source |
|---|---|---|
| Date | 7 July 2023 | elitigation.sg ↗ |
| Moved (USD) | over US$127 million | elitigation.sg ↗ |
| Claimed cause | CEO had ultimate privileges and control over the bridge assets (claimant's position) | elitigation.sg ↗ |
| Amount (USD) | over $210 million | blog.fantom.foundation ↗ |
Primary sources
- High Court of Singapore: Fantom Foundation Ltd v Multichain Foundation Ltd [2024] SGHC 173 ↗ official announcement · accessed 2026-11-04
- Fantom Foundation: Default Judgement Against Multichain ↗ official announcement · accessed 2026-11-04
Our own summary of facts published by the sources above. We do not attribute fault beyond them. Amounts are as the sources state them (no USD conversion by us); links and quoted figures last checked 2026-11-04.
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