+bitcoin = { version = "0.30.2", default-features = false, features = ["secp-recovery"] }
+
+hashbrown = { version = "0.8", optional = true }
+hex = { package = "hex-conservative", version = "0.1.1", default-features = false }
+regex = { version = "1.5.6", optional = true }
+backtrace = { version = "0.3", optional = true }