THORChain Cuts v3.21 for October 23 Height to Restart Rujira After FIN Pause
By Node Zero
October 19, 2026
THORChain cut network upgrade v3.21 on October 19, 2026, targeting halt height 28,366,100 — roughly Friday, October 23 between about 13:40 and 15:20 UTC on the public calendar (GitLab’s consensus MR lists a nearby 12:30–15:30 UTC window; the height is authoritative). The release is pitched to restore full functionality after a late-September App Layer pause, including a patch path that lets Rujira trading, lending, and automated strategies come back online once node operators sign off.
The break that froze Rujira sat in the Rujira FIN contract on THORChain’s App Layer. An exploit detected on September 26 allowed unauthorized transfers of a concentrated liquidity position belonging to the Rujira team, according to desk coverage of the findings. The App Layer was paused on September 27 with node-operator coordination. Reports say no user funds were lost in that incident — a material distinction from drain-and-run bridge stories, but still a nearly four-week product outage for anyone who used Rujira credit, FIN trading, or automated strategies.
Beyond the FIN patch, v3.21 is expected to restore SOL and ZEC trading, limit swaps, and bRUNE staking — features that had been halted with the broader functionality freeze. THORChain’s own network update framed 3.21 as shipping “a ton of network fixes” plus a long-requested feature and bringing the network back toward full operation. The THORNode GitLab release MR for 3.21.0 warns that mainnet will use a private binary with additional security patches and that operators should not build from source.
Credit users sit on the sharpest restart edge. Rujira plans to request a conditional 24-hour liquidation grace period for positions with loan-to-value above 100% when services resume. That is a proposal, not a locked rule: if node operators approve the window, underwater borrowers get a day to top up or unwind; if they do not, liquidations can hit as soon as the App Layer flips live. Protocol desks should treat “conditional” as the operative word until a signed operator decision lands.
For NFT and cross-chain collectors, THORChain remains a settlement and hop rail more than a marketplace — native swaps without wrapped tokens are the base pitch, and Rujira is the app layer that extends that into lending and strategy products. A clean Oct 23 height hit matters for anyone routing SOL/ZEC legs or waiting on limit-swap tooling. It is a separate chapter from earlier Bitget refuse-service fights on the same protocol; the receipt here is the consensus height, the private release binary, and whether Rujira credit actually reopens without a second pause.
Operators should also note the release process itself. The merged 3.21.0 mainnet MR points at a private deployable image rather than a public source build, which is how THORChain is shipping the extra security patches tied to this cut. That raises the usual verification bar: confirm image hashes and release notes before pointing validators at the upgrade, and treat any “build it yourself” instructions as out of band for this height.
Read the cut as a calendar gate, not a guarantee. Height 28,366,100 can slip if block times drift; node-operator approval still sits between binary availability and a live App Layer; and the liquidation grace period remains a ask. The builder checklist for the next forty-eight hours is whether operators publish upgrade readiness, whether the private image hashes match the release notes, and whether Rujira posts a concrete restart checklist for FIN and credit users.
Next protocol beat: Confirm the network actually halts and upgrades at height 28,366,100 on or about October 23, then watch for an operator-approved App Layer unpause plus a yes/no on the conditional 24-hour liquidation grace — those three receipts decide whether Rujira is back or still held.
Bottom line: THORChain’s v3.21 cut targets height 28,366,100 around October 23 to restore Rujira’s App Layer after the late-September FIN pause — with SOL/ZEC trading, limit swaps, and a still-conditional liquidation grace period on the restart checklist.
Disclaimer: This article is provided for informational and educational purposes only. It does not constitute financial, investment, legal, or trading advice. The NFT market is highly volatile, and past performance is not indicative of future results. Readers should conduct their own research and consult qualified professionals before making any decisions related to digital assets. The cover image for this article may have been created using artificial intelligence (AI).
