THORChain Pauses After Ethereum Reorg Causes Double Refund

THORChain triggered an emergency pause on October 31, 2026, after an unexpected Ethereum chain reorganization caused the protocol to issue a duplicate refund of 10 ETH on a single deposit, according to Crypto Briefing.

The outlet reports that the pause froze trading and swaps across 12 of the 13 chains THORChain supports, though outbound signing reportedly stayed active on most of those chains, letting some transactions continue even as new swaps were blocked. Crypto Briefing describes the reorg mechanics as similar to two people briefly recording differing versions of the same transaction before the network settles on a single record and discards the other; here, that process left THORChain paying out the same 10 ETH deposit twice before the error was caught and operations were halted.

Per the report, an emergency halt of this kind can run for up to 720 blocks, roughly 1.5 hours, and may be extended if node operators vote to do so. Crypto Briefing states that Chainalysis has connected the halt to funds taken in a Binance theft and to laundering activity it associates with North Korea, noting the pause may have incidentally slowed the movement of those funds; this is reported as Chainalysis's attribution, not independently confirmed by the outlet. Crypto Briefing also notes this is THORChain's first operational halt of 2026, following earlier incidents this year tied to exploits involving ZEC and TRON.

What remains unresolved, per the report, is whether node operators extended the halt beyond the initial window, how THORChain will handle the extra 10 ETH refund, and whether the protocol will change how it responds to Ethereum reorganizations going forward.