Network Allowlist

Overview

A network allowlist defines which chains a system may connect to or accept for a particular operation. Entries can include chain IDs, genesis hashes, RPC endpoints, native assets, token contracts, bridge routes, and environment labels. The control prevents accidental use of testnets, lookalike chains, malicious RPC suggestions, or unsupported deposit networks. A chain name alone is insufficient because forks and EVM-compatible networks can share address formats and expose similar contract interfaces.

Applications should validate chain ID and, when appropriate, genesis or finalized checkpoint data before enabling transactions. Changes need review, versioning, and rollback. Payment processors should link every supported asset to allowed chain-and-contract pairs and reject deposits whose network is valid technically but outside the approved recovery and settlement process.

Changes to Network Allowlist should pass automated tests against known network identifiers, contracts, encodings, and expected outputs. Rollout needs environment separation, change approval, rollback, and historical traceability so past transactions can be interpreted using the configuration active at that time. This evidence helps distinguish incorrect configuration from an upstream node, protocol, or business-logic failure. Operational logs for Network Allowlist should record the version, caller, resolved value, and downstream action without exposing secrets.

Network Allowlist should be maintained through one versioned source of truth that defines identifiers, schemas, allowed values, ownership, and deployment scope. Human-readable labels are not sufficient when different chains, environments, or providers reuse similar names. Unknown versions, ambiguous aliases, unsupported fields, duplicate records, and stale configurations should fail into review rather than being silently mapped to a convenient default. Inputs to Network Allowlist need explicit validation and deterministic failure behavior.