Sincronização de geradores PoH
Contexto
This figure appears in the 'Proof of History Sequence' section, which describes the operational details of PoH as a continuous stream: how entries are recorded, how multiple data items are batched at a single index, and how the sequence supports both checkpoint-based verification and light proofs. The section also addresses the question of horizontal scaling — whether multiple PoH generators can operate in parallel to increase throughput.
O que esta figura mostra
The diagram shows two independent PoH generators synchronizing by inserting each other's output state into their respective hash chains at regular intervals. Generator A periodically records a hash of Generator B's current state, and Generator B does the same for Generator A. These cross-insertions create verifiable proof that both generators were aware of each other's sequence at the time of insertion, establishing a causal ordering between the two independent timelines. An observer with both sequences can confirm that neither generator could have forged its cross-references after the fact, because doing so would require recomputing the entire subsequent hash chain from the point of forgery. This mutual back-referencing is the mechanism by which multiple PoH generators can scale horizontally while maintaining a consistent, unforgeable ordering.
Importância
Multi-generator PoH is Solana's path to horizontal throughput scaling beyond what a single CPU core can hash. By synchronizing independent generators through cross-references, the network can shard the transaction ordering workload across multiple leaders processing different transaction streams, while maintaining a globally consistent ordering guaranteed by the cross-reference proofs. This design anticipates the architectural direction for future Solana scaling beyond single-core hash rate limits.
