Consensus Rules

Overview

Consensus rules define what the network considers valid. They cover transaction authorization, block structure, resource limits, state-transition logic, issuance, timestamps, signatures, voting thresholds, fork activation, and any other condition that can affect canonical history. They differ from relay or wallet policy, which a node may configure without splitting the chain. Changing a consensus rule requires a coordinated upgrade and may create a soft fork, hard fork, or incompatible network if participants activate differently.

Developers must isolate consensus-critical code, use deterministic behavior, and test boundary cases across implementations. Payment platforms should track scheduled activations and confirm their nodes follow the intended rules before processing blocks after an upgrade. The security model depends on the resource or authority used to influence consensus, participant concentration, network timing, client behavior, and the cost of equivocation, censorship, or history revision. Safety, liveness, and accountability should be assessed separately under partitions and coordinated failures.

Local block visibility is only an intermediate signal; canonical status, execution outcome, and protocol-level settlement evidence must also be checked before fulfillment becomes irreversible. Payment applications relying on Consensus Rules need network-specific confirmation and finality policies.

Production teams should monitor chain progress, competing branches, participation, and protocol-specific fault indicators. Recovery plans must reflect whether the design halts to preserve safety, permits temporary reorganization, or relies on social or governance intervention after exceptional failure. A mechanism’s label does not define those details across every implementation. Evaluation should cover the complete decision process: who may propose data, how other participants validate it, how competing histories are ranked, and what evidence makes an outcome difficult or impossible to reverse.