Mina Hard Fork on September 3, 2026: What Happens to Your MINA During the Network Halt

The Mina network will temporarily suspend operations on Thursday, September 3, 2026. Between 10:00 and 18:00 UTC, a transaction stop, a full network halt and a restart under new protocol rules follow one another. Anyone holding MINA is affected in three places: transfers submitted too late will not make it onto the chain. Exchanges will suspend deposits and withdrawals. And anyone who has delegated their holdings will receive no block rewards for the duration of the pause, because no filled blocks are produced during that time.

The upgrade is called Mesa. The development company o1Labs has published the timetable with exact times, along with an overview of what users, exchanges and node operators can expect. Both documents are publicly available and form the basis of this article. The deadline is three days away, and the only preparation the vast majority of investors need takes five minutes.

Mina Mesa Hard Fork: What Exactly Happens on September 3, 2026

Mesa is a hard fork, meaning a change to the protocol rules that is not backwards compatible. A hard fork requires every node on the network to switch to the same new software at the same time, because the old version would no longer recognize the new blocks as valid. At Mina, this switch does not happen while the network keeps running. The chain is halted on schedule, brought into a defined final state, and then restarted under the new version.

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