Pi Network reminded Mainnet node operators on Saturday, June 20, 2026, that they must upgrade to Protocol v25 to keep their nodes linked to the blockchain.
Upgrade Status and Procedure
The Pi Core Team reported that most Mainnet operators have already completed the v25 transition. Operators who have not yet updated are urged to run the upgrade, which typically consumes only a few minutes of desktop time. The process mirrors earlier protocol upgrades and does not require advanced technical skills.
How Pi Nodes Secure the Blockchain
Pi Network nodes rely on a consensus model derived from the Stellar Consensus Protocol, contrasting with the proof‑of‑work systems used by Bitcoin and Ethereum. Nodes organize into trusted groups called quorum slices, reaching agreement through a global trust graph built from users’ security circles.
Node Software and Participation Tiers