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serai/docs/coordinator/Coordinator.md
Luke Parker 5e02f936e4
Perform MuSig signing of generated keys
2023-08-14 06:08:55 -04:00

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Coordinator

The coordinator is a service which communicates with all of the processors, all of the other coordinators over a secondary P2P network, and with the Serai node.

This document primarily details its flow with regards to the Serai node and processor.

New Set Event

On validator_sets::pallet::Event::NewSet, the coordinator spawns a tributary for the new set. It additionally sends the processor key_gen::CoordinatorMessage::GenerateKey.

Key Generation Event

On validator_sets::pallet::Event::KeyGen, the coordinator sends substrate::CoordinatorMessage::ConfirmKeyPair to the processor.

Update

On key_gen::ProcessorMessage::Update, the coordinator publishes an unsigned transaction containing the signed batch to the Serai blockchain.

Sign Completed

On sign::ProcessorMessage::Completed, the coordinator makes a tributary transaction containing the transaction hash the signing process was supposedly completed with.

Due to rushing adversaries, the actual transaction completing the plan may be distinct on-chain. These messages solely exist to coordinate the signing process, not to determine chain state.