proof-measure is a separate, public, unauthenticated Dragonchain service. Adds: - UnauthHttpClient: HMAC-free transport mirroring DragonchainClient (timeout, agent, redirect refusal). - ProofMeasureClient: getSecurity / report / health; default base URL https://proof-measure.dragonchain.com. Standalone (new ProofMeasureClient()) and via DragonchainSDK.proofMeasure. - Proof-measure types (decimals as strings, timestamps as numbers). - jest tests.