Network Validation

Overview

Network validation includes verifying syntax, signatures, balances or inputs, nonces, scripts, smart-contract execution, block limits, consensus proofs, and parent references. Full nodes independently perform the checks required by their protocol.

Validation differs from observing data through an API. An indexer or explorer may report a transaction without proving every rule, and a valid transaction is not final until canonical consensus accepts it. Local relay policy can add checks beyond consensus. Payment services should obtain settlement evidence from validating nodes or well-defined proof systems. Operators need compatible client versions and alerts for validation failures or divergent heads. Skipping validation increases dependence on upstream providers and can expose applications to invalid or manipulated state. Consensus-affecting changes may require coordinated deployment, while local-policy changes can alter propagation or service behavior without changing ledger validity. Changes to Network Validation require clear activation and upgrade authority.

Applications relying on Network Validation should retain the inputs, outputs, network, version, responsible component, and evidence of success or failure. An accepted request or message is not necessarily proof that the intended state transition or settlement completed. Similar labels can describe consensus-critical rules, local node policy, application conventions, or business procedures with very different effects. Network Validation should be tied to a precise scope such as message format, state transition, participant role, contract interface, or operational policy. Implementations of Network Validation need an exact specification and version, deterministic validation, defined errors, and compatibility tests across independent software. A written rule has no operational effect unless the active components enforce it consistently.