Blast, the Paradigm-backed Ethereum layer-2 network that once held more than $2.3 billion in total value locked, announced it is shutting down because maintenance costs exceed revenue and there is no credible path to economic sustainability. The team stated on X that users must withdraw assets from the network's progressive web app by October 26 through the standard interface. After this deadline, funds will remain accessible only via direct interaction with Blast's bridge contracts on Ethereum mainnet. To facilitate withdrawals, Blast reduced its delay period to 24 hours but paused processing for approximately one week while extracting assets from Lido, a liquid staking protocol.

Launched in November 2023 by the creators of NFT marketplace Blur, Blast attracted over $1.1 billion in deposits before going live and peaked at $2.3 billion locked in its bridge by February 2024. The network faced early operational issues, including briefly stopping block production after Ethereum's Dencun upgrade in March 2024. Its June 2024 airdrop distributed $354 million worth of BLAST tokens, but total value locked had already declined by about 30% from its peak by that time. Blast joins other Ethereum layer-2 networks such as Zero Network and Silicon Network, which have also announced wind-downs this year amid broader industry contraction.