Neo Legacy, the original version of the Neo blockchain launched in 2016, will cease operations by October as the project completes its transition to Neo N3.
Neo will shut down its original blockchain called Neo Legacy by the end of October, urging users and developers to migrate assets and smart contracts to Neo N3 before the deadline to avoid permanent loss.
Since launch in 2016, the Legacy chain has produced more than 14 million blocks, processed over 281 million transactions, and supported nearly 3 million addresses, the project revealed in an X post on Tuesday.
https://t.co/sRNqgNf9K7
— Neo Smart Economy (@Neo_Blockchain) April 29, 2025
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Neo Legacy was succeeded by Neo N3, a newer blockchain launched in June 2021. Legacy’s testnet will shut down on June 1, followed by the mainnet on Oct. 31, the team said in the announcement.
“After the shutdown, block production on Neo Legacy will come to a permanent halt. Users will no longer be able to transfer assets, migrate tokens to other networks, or deploy and develop smart contracts on the network. All core functionalities will cease.”
Neo
A final snapshot will be taken before the shutdown to “preserve the historical state of the network for reference,” the Neo team said, adding that all assets and smart contracts on Neo Legacy “must be migrated to Neo N3 before the official shutdown,” as failing to do so will result in permanent loss.
Neo also said it would work with exchanges and provide migration support through official portals and its Discord community.
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