diff --git a/Cargo.lock b/Cargo.lock
index 49e5ab6..906244b 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -144,12 +144,18 @@ dependencies = [
  "electrsd",
  "env_logger",
  "fd-lock",
+ "js-sys",
  "log",
+ "rand 0.6.5",
  "regex",
  "rustyline",
+ "secp256k1 0.22.1",
  "serde_json",
  "structopt",
  "tokio",
+ "wasm-bindgen",
+ "wasm-bindgen-futures",
+ "wasm-logger",
  "zeroize",
 ]
 
@@ -1081,9 +1087,9 @@ dependencies = [
 
 [[package]]
 name = "js-sys"
-version = "0.3.58"
+version = "0.3.56"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c3fac17f7123a73ca62df411b1bf727ccc805daa070338fda671c86dac1bdc27"
+checksum = "a38fc24e30fd564ce974c02bf1d337caddff65be6cc4735a1f7eab22a7440f04"
 dependencies = [
  "wasm-bindgen",
 ]
@@ -1623,6 +1629,7 @@ dependencies = [
  "libc",
  "rand_core 0.4.2",
  "rdrand",
+ "wasm-bindgen",
  "winapi",
 ]
 
@@ -2529,19 +2536,21 @@ checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"
 
 [[package]]
 name = "wasm-bindgen"
-version = "0.2.81"
+version = "0.2.79"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7c53b543413a17a202f4be280a7e5c62a1c69345f5de525ee64f8cfdbc954994"
+checksum = "25f1af7423d8588a3d840681122e72e6a24ddbcb3f0ec385cac0d12d24256c06"
 dependencies = [
  "cfg-if",
+ "serde",
+ "serde_json",
  "wasm-bindgen-macro",
 ]
 
 [[package]]
 name = "wasm-bindgen-backend"
-version = "0.2.81"
+version = "0.2.79"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5491a68ab4500fa6b4d726bd67408630c3dbe9c4fe7bda16d5c82a1fd8c7340a"
+checksum = "8b21c0df030f5a177f3cba22e9bc4322695ec43e7257d865302900290bcdedca"
 dependencies = [
  "bumpalo",
  "lazy_static",
@@ -2554,9 +2563,9 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-futures"
-version = "0.4.31"
+version = "0.4.29"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "de9a9cec1733468a8c657e57fa2413d2ae2c0129b95e87c5b72b8ace4d13f31f"
+checksum = "2eb6ec270a31b1d3c7e266b999739109abce8b6c87e4b31fcfcd788b65267395"
 dependencies = [
  "cfg-if",
  "js-sys",
@@ -2566,9 +2575,9 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-macro"
-version = "0.2.81"
+version = "0.2.79"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c441e177922bc58f1e12c022624b6216378e5febc2f0533e41ba443d505b80aa"
+checksum = "2f4203d69e40a52ee523b2529a773d5ffc1dc0071801c87b3d270b471b80ed01"
 dependencies = [
  "quote",
  "wasm-bindgen-macro-support",
@@ -2576,9 +2585,9 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-macro-support"
-version = "0.2.81"
+version = "0.2.79"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7d94ac45fcf608c1f45ef53e748d35660f168490c10b23704c7779ab8f5c3048"
+checksum = "bfa8a30d46208db204854cadbb5d4baf5fcf8071ba5bf48190c3e59937962ebc"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -2589,15 +2598,26 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-shared"
-version = "0.2.81"
+version = "0.2.79"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6a89911bd99e5f3659ec4acf9c4d93b0a90fe4a2a11f15328472058edc5261be"
+checksum = "3d958d035c4438e28c70e4321a2911302f10135ce78a9c7834c0cab4123d06a2"
+
+[[package]]
+name = "wasm-logger"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "074649a66bb306c8f2068c9016395fa65d8e08d2affcbf95acf3c24c3ab19718"
+dependencies = [
+ "log",
+ "wasm-bindgen",
+ "web-sys",
+]
 
 [[package]]
 name = "web-sys"
-version = "0.3.58"
+version = "0.3.56"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2fed94beee57daf8dd7d51f2b15dc2bcde92d7a72304cdf662a4371008b71b90"
+checksum = "c060b319f29dd25724f09a2ba1418f142f539b2be99fbf4d2d5a8f7330afb8eb"
 dependencies = [
  "js-sys",
  "wasm-bindgen",