Ethereum layer-2 network built around native yield Blast said on Oct. 2 that it will shut down because maintaining the chain costs more than it earns.

The project asked users to move their assets to Ethereum mainnet by Oct. 26 to withdraw through its normal interface.

Blast said in its shutdown announcement that it sees no credible path to making the network economically sustainable. It plans to wind down the chain through an asset withdrawal process that will temporarily interrupt users’ ability to exit.

The decision comes nearly three years after Blast disclosed $20 million in funding from Paradigm and Standard Crypto on Nov. 20, 2023. The network opened early access that November , with a mainnet launch then planned for February 2024.

Its documented design describes an Ethereum-compatible optimistic rollup that passes yield from ETH staking and real-world-asset protocols to users. The website identifies Lido and MakerDAO as yield sources and lists additional investors among Blast's backers .

The yield model was intended to let holders benefit from returns earned by those underlying protocols, but Blast now says those operating economics no longer justify keeping the network running.

Blast said it will first withdraw its assets from Lido, which its design identifies as a source of ETH staking yield, a process that is expected to take approximately one week.

User withdrawals will be temporarily unavailable during the unwind, even after the network reduces its withdrawal delay to 24 hours.