PiRC2 Subscription Contract API

PiRC2 (Pi Request for Comments #2) is Pi Network's first smart contract specification, published by Pi Core Team CTO Nicolas Kokkalis in April 2026. PiRC2 defines a Soroban-based Subscription Contract API — enabling merchants and users to establish automatic recurring payment subscriptions on the Pi blockchain.

PiRC2's core innovation leverages Soroban's token allowance mechanism, allowing subscription payments without requiring the user to re-sign each time, while funds remain in the subscriber's wallet and are only transferred at the time of actual billing. This solves the core challenge of recurring payments on traditional blockchains.

The reference implementation (source code) is in the PiNetwork/SmartContracts directory of the contracts/subscription/ repository, currently undergoing external security audit. OrbitWatch tracks all PiRC2 document updates in the PiNetwork/PiRC repository.