Threshold Network has restarted core on-chain operations for its tBTC bridge following a nine-day security-driven halt. Security-patched node operators have begun reconnecting, allowing the system to process certain pending activity. Full access for new deposits, minting, and redemptions has not resumed, and a substantial Aave reserve of the token continues under freeze.

Security Pause and Restart Conditions

The bridge pause began on October 30 after Threshold identified a critical Linux kernel vulnerability capable of enabling remote code execution on unpatched servers. The project reported no signs that the flaw was exploited against its nodes and found no unauthorized Bitcoin movements or improper tBTC issuance during the downtime.

Restart of the underlying network occurred once patched operators returned. These independent operators collectively authorize Bitcoin transfers and manage the conversion process between on-chain tBTC and the underlying Bitcoin custody. Threshold stated that requests submitted before the shutdown are expected to clear gradually as more operators rejoin. The application itself will not accept new deposits or enable minting and redemptions until a sufficient number of nodes are online. No firm date has been set for complete restoration of those functions.

Aave Reserve Restrictions Persist

Separately, Aave froze its tBTC reserve on Ethereum on October 31. The reserve holds about $120 million to $123.2 million in tBTC. The freeze blocks new deposits into the pool and prevents the token from supporting additional borrowing. Users with existing positions retain the ability to repay debt or withdraw assets, and liquidation parameters remain unchanged.

The restriction functions as an independent risk control rather than an automatic consequence of the bridge restart. Aave’s risk provider, LlamaRisk, has indicated it will propose lifting the freeze once Threshold’s operations return to normal. Until that proposal advances through governance and the bridge reaches stable capacity for new activity, lending market expansion for tBTC remains constrained.

Operational Status and Next Steps

Existing tBTC tokens continue to transfer and function in other contexts. The partial restart restores basic network connectivity and the ability to handle pre-existing requests, yet the combination of incomplete operator quorum and the Aave freeze limits practical liquidity and leverage options for users.

Market participants are monitoring two parallel developments: Threshold’s progress toward sufficient node participation to reopen new deposits and redemptions, and any subsequent Aave governance action on the reserve. Full usability of tBTC across both the bridge and major DeFi venues depends on both conditions being met.