Ontology Suspends Mainnet Block Production Amid Security Review

Ontology's core development team announced an emergency halt to its mainnet on August 31, ceasing all block production due to a potential security concern identified during a routine check. The last block recorded was number 20,770,893, and all on-chain transactions were suspended as validators and the technical team began a thorough review.

No confirmed security breach or loss of user assets has been reported, but the precautionary measure led major South Korean exchanges, Bithumb and Upbit, to quickly suspend deposits and withdrawals for ONT, ONG, and MovieBloc (MBL) tokens associated with the Ontology network.

This suspension occurred just ten days after the rollout of MainNet v3.1.2, which aimed to enhance Ethereum compatibility by introducing new EVM opcodes. The Ontology team has not provided a timeline for resuming block production, emphasizing the need for a comprehensive safety assessment before the network can go back online.

Trading on alternative networks remains unaffected, and users holding ONT or ONG on exchanges that have not paused activity can still trade their tokens. However, assets in on-chain wallets or pending transactions are currently frozen until the mainnet is operational again.

Ontology is a public blockchain focused on decentralized identity, data management, and trust infrastructure, utilizing a dual-token model where ONT serves governance and staking functions, while ONG is used for transaction fees. Since its mainnet launch in 2018, Ontology has made several enhancements to improve its compatibility with Ethereum.