Chain Query Bitcoin RPC API - Developers Bitcoin Cryptocurrency, Currency The Chain Query Bitcoin API uses JSON-RPC format to return bitcoin data including transactions, encrypting wallet, estimate fees, balances, blockchain info, messages, wallet passphrase and much more.Track API Choose StyleRPC Choose VersionRecommendedLearn about versioning SummarySDKs (0)Articles (1)How To(0)Source Code(0)Libraries(0)Developers (0)Followers (3)Changelog (0) Summary SDKs Articles How To Source Code Libraries Developers Followers ChangelogDevelopers (0) Add Mashup