From cc4b1d334955c033278692c62de208167e97b7f5 Mon Sep 17 00:00:00 2001
From: willclarktech <willclarktech@users.noreply.github.com>
Date: Wed, 9 Sep 2020 13:50:58 +0200
Subject: [PATCH 01/33] launchpad-ledger: Add basic package setup

---
 packages/launchpad-ledger/.eslintignore       |  1 +
 packages/launchpad-ledger/.gitignore          |  3 ++
 packages/launchpad-ledger/.nycrc.yml          |  1 +
 packages/launchpad-ledger/README.md           | 12 +++++
 .../launchpad-ledger/jasmine-testrunner.js    | 33 +++++++++++++
 packages/launchpad-ledger/karma.conf.js       | 47 +++++++++++++++++++
 packages/launchpad-ledger/package.json        | 44 +++++++++++++++++
 packages/launchpad-ledger/tsconfig.json       | 12 +++++
 packages/launchpad-ledger/typedoc.js          | 13 +++++
 .../launchpad-ledger/webpack.web.config.js    | 19 ++++++++
 10 files changed, 185 insertions(+)
 create mode 120000 packages/launchpad-ledger/.eslintignore
 create mode 100644 packages/launchpad-ledger/.gitignore
 create mode 120000 packages/launchpad-ledger/.nycrc.yml
 create mode 100644 packages/launchpad-ledger/README.md
 create mode 100755 packages/launchpad-ledger/jasmine-testrunner.js
 create mode 100644 packages/launchpad-ledger/karma.conf.js
 create mode 100644 packages/launchpad-ledger/package.json
 create mode 100644 packages/launchpad-ledger/tsconfig.json
 create mode 100644 packages/launchpad-ledger/typedoc.js
 create mode 100644 packages/launchpad-ledger/webpack.web.config.js

diff --git a/packages/launchpad-ledger/.eslintignore b/packages/launchpad-ledger/.eslintignore
new file mode 120000
index 00000000..86039baf
--- /dev/null
+++ b/packages/launchpad-ledger/.eslintignore
@@ -0,0 +1 @@
+../../.eslintignore
\ No newline at end of file
diff --git a/packages/launchpad-ledger/.gitignore b/packages/launchpad-ledger/.gitignore
new file mode 100644
index 00000000..68bf3735
--- /dev/null
+++ b/packages/launchpad-ledger/.gitignore
@@ -0,0 +1,3 @@
+build/
+dist/
+docs/
diff --git a/packages/launchpad-ledger/.nycrc.yml b/packages/launchpad-ledger/.nycrc.yml
new file mode 120000
index 00000000..1f95ac55
--- /dev/null
+++ b/packages/launchpad-ledger/.nycrc.yml
@@ -0,0 +1 @@
+../../.nycrc.yml
\ No newline at end of file
diff --git a/packages/launchpad-ledger/README.md b/packages/launchpad-ledger/README.md
new file mode 100644
index 00000000..e8c0ad23
--- /dev/null
+++ b/packages/launchpad-ledger/README.md
@@ -0,0 +1,12 @@
+# @cosmjs/launchpad-ledger
+
+[![npm version](https://img.shields.io/npm/v/@cosmjs/launchpad-ledger.svg)](https://www.npmjs.com/package/@cosmjs/launchpad-ledger)
+
+```
+
+## License
+
+This package is part of the cosmjs repository, licensed under the Apache License
+2.0 (see [NOTICE](https://github.com/CosmWasm/cosmjs/blob/master/NOTICE) and
+[LICENSE](https://github.com/CosmWasm/cosmjs/blob/master/LICENSE)).
+```
diff --git a/packages/launchpad-ledger/jasmine-testrunner.js b/packages/launchpad-ledger/jasmine-testrunner.js
new file mode 100755
index 00000000..7a17962e
--- /dev/null
+++ b/packages/launchpad-ledger/jasmine-testrunner.js
@@ -0,0 +1,33 @@
+#!/usr/bin/env node
+
+/* eslint-disable @typescript-eslint/naming-convention */
+require("source-map-support").install();
+const defaultSpecReporterConfig = require("../../jasmine-spec-reporter.config.json");
+
+// setup Jasmine
+const Jasmine = require("jasmine");
+const jasmine = new Jasmine();
+jasmine.loadConfig({
+  spec_dir: "build",
+  spec_files: ["**/*.spec.js"],
+  helpers: [],
+  random: false,
+  seed: null,
+  stopSpecOnExpectationFailure: false,
+});
+jasmine.jasmine.DEFAULT_TIMEOUT_INTERVAL = 15 * 1000;
+
+// setup reporter
+const { SpecReporter } = require("jasmine-spec-reporter");
+const reporter = new SpecReporter({
+  ...defaultSpecReporterConfig,
+  spec: {
+    ...defaultSpecReporterConfig.spec,
+    displaySuccessful: !process.argv.includes("--quiet"),
+  },
+});
+
+// initialize and execute
+jasmine.env.clearReporters();
+jasmine.addReporter(reporter);
+jasmine.execute();
diff --git a/packages/launchpad-ledger/karma.conf.js b/packages/launchpad-ledger/karma.conf.js
new file mode 100644
index 00000000..006da5fe
--- /dev/null
+++ b/packages/launchpad-ledger/karma.conf.js
@@ -0,0 +1,47 @@
+module.exports = function (config) {
+  config.set({
+    // base path that will be used to resolve all patterns (eg. files, exclude)
+    basePath: ".",
+
+    // frameworks to use
+    // available frameworks: https://npmjs.org/browse/keyword/karma-adapter
+    frameworks: ["jasmine"],
+
+    // list of files / patterns to load in the browser
+    files: ["dist/web/tests.js"],
+
+    client: {
+      jasmine: {
+        random: false,
+        timeoutInterval: 15000,
+      },
+    },
+
+    // test results reporter to use
+    // possible values: 'dots', 'progress'
+    // available reporters: https://npmjs.org/browse/keyword/karma-reporter
+    reporters: ["progress", "kjhtml"],
+
+    // web server port
+    port: 9876,
+
+    // enable / disable colors in the output (reporters and logs)
+    colors: true,
+
+    // level of logging
+    // possible values: config.LOG_DISABLE || config.LOG_ERROR || config.LOG_WARN || config.LOG_INFO || config.LOG_DEBUG
+    logLevel: config.LOG_INFO,
+
+    // enable / disable watching file and executing tests whenever any file changes
+    autoWatch: false,
+
+    // start these browsers
+    // available browser launchers: https://npmjs.org/browse/keyword/karma-launcher
+    browsers: ["Firefox"],
+
+    browserNoActivityTimeout: 90000,
+
+    // Keep brower open for debugging. This is overridden by yarn scripts
+    singleRun: false,
+  });
+};
diff --git a/packages/launchpad-ledger/package.json b/packages/launchpad-ledger/package.json
new file mode 100644
index 00000000..593e6edb
--- /dev/null
+++ b/packages/launchpad-ledger/package.json
@@ -0,0 +1,44 @@
+{
+  "name": "@cosmjs/launchpad-ledger",
+  "version": "0.22.2",
+  "description": "A library for interacting with the Cosmos Launchpad Ledger Nano App",
+  "contributors": [
+    "Will Clark <willclarktech@users.noreply.github.com>"
+  ],
+  "license": "Apache-2.0",
+  "main": "build/index.js",
+  "types": "types/index.d.ts",
+  "files": [
+    "build/",
+    "types/",
+    "*.md",
+    "!*.spec.*",
+    "!**/testdata/"
+  ],
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/CosmWasm/cosmjs/tree/master/packages/launchpad-ledger"
+  },
+  "publishConfig": {
+    "access": "public"
+  },
+  "scripts": {
+    "docs": "typedoc --options typedoc.js",
+    "format": "prettier --write --loglevel warn \"./src/**/*.ts\"",
+    "format-text": "prettier --write --prose-wrap always --print-width 80 \"./*.md\"",
+    "lint": "eslint --max-warnings 0 \"**/*.{js,ts}\"",
+    "lint-fix": "eslint --max-warnings 0 \"**/*.{js,ts}\" --fix",
+    "move-types": "shx rm -rf ./types/* && shx mv build/types/* ./types && rm -rf ./types/testdata && shx rm -f ./types/*.{demo,spec}.d.ts && shx rm ./types/**/*.spec.d.ts",
+    "format-types": "prettier --write --loglevel warn \"./types/**/*.d.ts\"",
+    "prebuild": "shx rm -rf ./build",
+    "build": "tsc",
+    "postbuild": "yarn move-types && yarn format-types",
+    "build-or-skip": "[ -n \"$SKIP_BUILD\" ] || yarn build",
+    "test-node": "node jasmine-testrunner.js",
+    "test-firefox": "yarn pack-web && karma start --single-run --browsers Firefox",
+    "test-chrome": "yarn pack-web && karma start --single-run --browsers ChromeHeadless",
+    "test": "yarn build-or-skip && yarn test-node",
+    "coverage": "nyc --reporter=text --reporter=lcov yarn test --quiet",
+    "pack-web": "yarn build-or-skip && webpack --mode development --config webpack.web.config.js"
+  }
+}
diff --git a/packages/launchpad-ledger/tsconfig.json b/packages/launchpad-ledger/tsconfig.json
new file mode 100644
index 00000000..167e8c02
--- /dev/null
+++ b/packages/launchpad-ledger/tsconfig.json
@@ -0,0 +1,12 @@
+{
+  "extends": "../../tsconfig.json",
+  "compilerOptions": {
+    "baseUrl": ".",
+    "outDir": "build",
+    "declarationDir": "build/types",
+    "rootDir": "src"
+  },
+  "include": [
+    "src/**/*"
+  ]
+}
diff --git a/packages/launchpad-ledger/typedoc.js b/packages/launchpad-ledger/typedoc.js
new file mode 100644
index 00000000..4dfbe49d
--- /dev/null
+++ b/packages/launchpad-ledger/typedoc.js
@@ -0,0 +1,13 @@
+const packageJson = require("./package.json");
+
+module.exports = {
+  inputFiles: ["./src"],
+  out: "docs",
+  exclude: "**/*.spec.ts",
+  name: `${packageJson.name} Documentation`,
+  readme: "README.md",
+  mode: "file",
+  excludeExternals: true,
+  excludeNotExported: true,
+  excludePrivate: true,
+};
diff --git a/packages/launchpad-ledger/webpack.web.config.js b/packages/launchpad-ledger/webpack.web.config.js
new file mode 100644
index 00000000..7373cace
--- /dev/null
+++ b/packages/launchpad-ledger/webpack.web.config.js
@@ -0,0 +1,19 @@
+const glob = require("glob");
+const path = require("path");
+const webpack = require("webpack");
+
+const target = "web";
+const distdir = path.join(__dirname, "dist", "web");
+
+module.exports = [
+  {
+    // bundle used for Karma tests
+    target: target,
+    entry: glob.sync("./build/**/*.spec.js"),
+    output: {
+      path: distdir,
+      filename: "tests.js",
+    },
+    plugins: [new webpack.EnvironmentPlugin(["WASMD_ENABLED"])],
+  },
+];

From f16ef5da7a1c35ac2fce4a915f109776b12f146f Mon Sep 17 00:00:00 2001
From: willclarktech <willclarktech@users.noreply.github.com>
Date: Wed, 9 Sep 2020 13:58:38 +0200
Subject: [PATCH 02/33] launchpad-ledger: Add ledger-cosmos-js dependency

---
 packages/launchpad-ledger/package.json | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/packages/launchpad-ledger/package.json b/packages/launchpad-ledger/package.json
index 593e6edb..d933cd01 100644
--- a/packages/launchpad-ledger/package.json
+++ b/packages/launchpad-ledger/package.json
@@ -40,5 +40,8 @@
     "test": "yarn build-or-skip && yarn test-node",
     "coverage": "nyc --reporter=text --reporter=lcov yarn test --quiet",
     "pack-web": "yarn build-or-skip && webpack --mode development --config webpack.web.config.js"
+  },
+  "dependencies": {
+    "ledger-cosmos-js": "^2.1.7"
   }
 }

From 6a3d20b8e3b0f8f5bab912551c2804a679d12d3e Mon Sep 17 00:00:00 2001
From: willclarktech <willclarktech@users.noreply.github.com>
Date: Wed, 9 Sep 2020 15:35:21 +0200
Subject: [PATCH 03/33] launchpad-ledger: Add @ledgerhq/hw-transport-webusb dep

---
 packages/launchpad-ledger/package.json |   1 +
 yarn.lock                              | 102 ++++++++++++++++++++++++-
 2 files changed, 102 insertions(+), 1 deletion(-)

diff --git a/packages/launchpad-ledger/package.json b/packages/launchpad-ledger/package.json
index d933cd01..dbcc37ce 100644
--- a/packages/launchpad-ledger/package.json
+++ b/packages/launchpad-ledger/package.json
@@ -42,6 +42,7 @@
     "pack-web": "yarn build-or-skip && webpack --mode development --config webpack.web.config.js"
   },
   "dependencies": {
+    "@ledgerhq/hw-transport-webusb": "^5.23.0",
     "ledger-cosmos-js": "^2.1.7"
   }
 }
diff --git a/yarn.lock b/yarn.lock
index cca65fc2..37811588 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -144,6 +144,13 @@
   resolved "https://registry.yarnpkg.com/@babel/parser/-/parser-7.10.3.tgz#7e71d892b0d6e7d04a1af4c3c79d72c1f10f5315"
   integrity sha512-oJtNJCMFdIMwXGmx+KxuaD7i3b8uS7TTFYW/FNG2BT8m+fmGHoiPYoH0Pe3gya07WuFmM5FCDIr1x0irkD/hyA==
 
+"@babel/runtime@^7.7.4":
+  version "7.11.2"
+  resolved "https://registry.yarnpkg.com/@babel/runtime/-/runtime-7.11.2.tgz#f549c13c754cc40b87644b9fa9f09a6a95fe0736"
+  integrity sha512-TeWkU52so0mPtDcaCTxNBI/IHiz0pZgr8VEFqXFtZWpYD08ZB6FaSwVAS8MKRQAP3bYKiVjwysOJgMFY28o6Tw==
+  dependencies:
+    regenerator-runtime "^0.13.4"
+
 "@babel/template@^7.10.1", "@babel/template@^7.10.3":
   version "7.10.3"
   resolved "https://registry.yarnpkg.com/@babel/template/-/template-7.10.3.tgz#4d13bc8e30bf95b0ce9d175d30306f42a2c9a7b8"
@@ -290,6 +297,72 @@
   dependencies:
     vary "^1.1.2"
 
+"@ledgerhq/devices@^4.78.0":
+  version "4.78.0"
+  resolved "https://registry.yarnpkg.com/@ledgerhq/devices/-/devices-4.78.0.tgz#149b572f0616096e2bd5eb14ce14d0061c432be6"
+  integrity sha512-tWKS5WM/UU82czihnVjRwz9SXNTQzWjGJ/7+j/xZ70O86nlnGJ1aaFbs5/WTzfrVKpOKgj1ZoZkAswX67i/JTw==
+  dependencies:
+    "@ledgerhq/errors" "^4.78.0"
+    "@ledgerhq/logs" "^4.72.0"
+    rxjs "^6.5.3"
+
+"@ledgerhq/devices@^5.23.0":
+  version "5.23.0"
+  resolved "https://registry.yarnpkg.com/@ledgerhq/devices/-/devices-5.23.0.tgz#e5b800de858e45d247be56708c832c1e51727fe0"
+  integrity sha512-XR9qTwn14WwN8VSMsYD9NTX/TgkmrTnXEh0pIj6HMRZwFzBPzslExOcXuCm3V9ssgAEAxv3VevfV8UulvvZUXA==
+  dependencies:
+    "@ledgerhq/errors" "^5.23.0"
+    "@ledgerhq/logs" "^5.23.0"
+    rxjs "^6.6.3"
+
+"@ledgerhq/errors@^4.78.0":
+  version "4.78.0"
+  resolved "https://registry.yarnpkg.com/@ledgerhq/errors/-/errors-4.78.0.tgz#23daf3af54d03b1bda3e616002b555da1bdb705a"
+  integrity sha512-FX6zHZeiNtegBvXabK6M5dJ+8OV8kQGGaGtuXDeK/Ss5EmG4Ltxc6Lnhe8hiHpm9pCHtktOsnUVL7IFBdHhYUg==
+
+"@ledgerhq/errors@^5.23.0":
+  version "5.23.0"
+  resolved "https://registry.yarnpkg.com/@ledgerhq/errors/-/errors-5.23.0.tgz#30a0338dafba8264556011604abed08bf24979f3"
+  integrity sha512-qtpX8aFrUUlYfOMu7BxTvxqUa8CniE+tEBpVEjYUhVbFdVJjM4ouwJD++RtQkMAU2c5jE7xb12WnUnf5BlAgLQ==
+
+"@ledgerhq/hw-transport-webusb@^5.23.0":
+  version "5.23.0"
+  resolved "https://registry.yarnpkg.com/@ledgerhq/hw-transport-webusb/-/hw-transport-webusb-5.23.0.tgz#f374415ab1bda6ba55898c0e74097f2005fd06f7"
+  integrity sha512-kz0LhlxvE97gIU0TvvzY3Co4DsRudwXoWZ/RCW3/ewn4zJ5ZT/fvp9qCrqbRsXJ+RTuZ7JQOiR1kA+Iz3qJWCg==
+  dependencies:
+    "@ledgerhq/devices" "^5.23.0"
+    "@ledgerhq/errors" "^5.23.0"
+    "@ledgerhq/hw-transport" "^5.23.0"
+    "@ledgerhq/logs" "^5.23.0"
+
+"@ledgerhq/hw-transport@^4.77.0":
+  version "4.78.0"
+  resolved "https://registry.yarnpkg.com/@ledgerhq/hw-transport/-/hw-transport-4.78.0.tgz#714786658e1f2fbc0569e06e2abf8d15d310d931"
+  integrity sha512-xQu16OMPQjFYLjqCysij+8sXtdWv2YLxPrB6FoLvEWGTlQ7yL1nUBRQyzyQtWIYqZd4THQowQmzm1VjxuN6SZw==
+  dependencies:
+    "@ledgerhq/devices" "^4.78.0"
+    "@ledgerhq/errors" "^4.78.0"
+    events "^3.0.0"
+
+"@ledgerhq/hw-transport@^5.23.0":
+  version "5.23.0"
+  resolved "https://registry.yarnpkg.com/@ledgerhq/hw-transport/-/hw-transport-5.23.0.tgz#ed3445b9579c43a58cd959610ad7e464b36b87ca"
+  integrity sha512-ICTG3Bst62SkC+lYYFgpKk5G4bAOxeIvptXnTLOhf6VqeN7gdHfiRzZwNPnKzI2pxmcEVbBitgsxEIEQJmDKVA==
+  dependencies:
+    "@ledgerhq/devices" "^5.23.0"
+    "@ledgerhq/errors" "^5.23.0"
+    events "^3.2.0"
+
+"@ledgerhq/logs@^4.72.0":
+  version "4.72.0"
+  resolved "https://registry.yarnpkg.com/@ledgerhq/logs/-/logs-4.72.0.tgz#43df23af013ad1135407e5cf33ca6e4c4c7708d5"
+  integrity sha512-o+TYF8vBcyySRsb2kqBDv/KMeme8a2nwWoG+lAWzbDmWfb2/MrVWYCVYDYvjXdSoI/Cujqy1i0gIDrkdxa9chA==
+
+"@ledgerhq/logs@^5.23.0":
+  version "5.23.0"
+  resolved "https://registry.yarnpkg.com/@ledgerhq/logs/-/logs-5.23.0.tgz#7a86b1e6479c8aa8e8b9affe00eb8e369efdbc3b"
+  integrity sha512-88M8RkVHl44k6MAhfrYhx25opnJV24/2XpuTUVklID11f9rBdE+6RZ9OMs39dyX2sDv7TuzIPi5nTRoCqZMDYw==
+
 "@lerna/add@3.21.0":
   version "3.21.0"
   resolved "https://registry.yarnpkg.com/@lerna/add/-/add-3.21.0.tgz#27007bde71cc7b0a2969ab3c2f0ae41578b4577b"
@@ -2051,7 +2124,7 @@ bcrypt-pbkdf@^1.0.0:
   dependencies:
     tweetnacl "^0.14.3"
 
-bech32@^1.1.4:
+bech32@^1.1.3, bech32@^1.1.4:
   version "1.1.4"
   resolved "https://registry.yarnpkg.com/bech32/-/bech32-1.1.4.tgz#e38c9f37bf179b8eb16ae3a772b40c356d4832e9"
   integrity sha512-s0IrSOzLlbvX7yp4WBfPITzpAU8sqQcpsmwXDiKwrG4r491vwCO/XpejasRNl0piBMe/DvP4Tz0mIS/X1DPJBQ==
@@ -3660,6 +3733,11 @@ events@^3.0.0:
   resolved "https://registry.yarnpkg.com/events/-/events-3.1.0.tgz#84279af1b34cb75aa88bf5ff291f6d0bd9b31a59"
   integrity sha512-Rv+u8MLHNOdMjTAFeT3nCjHn2aGlx435FP/sDHNaRhDEMwyI/aB22Kj2qIN8R0cw3z28psEQLYwxVKLsKrMgWg==
 
+events@^3.2.0:
+  version "3.2.0"
+  resolved "https://registry.yarnpkg.com/events/-/events-3.2.0.tgz#93b87c18f8efcd4202a461aec4dfc0556b639379"
+  integrity sha512-/46HWwbfCX2xTawVfkKLGxMifJYQBWMwY1mjywRtb4c9x8l5NP3KoJtnIOiL1hfdRkIuYhETxQlo62IF8tcnlg==
+
 evp_bytestokey@^1.0.0, evp_bytestokey@^1.0.3:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/evp_bytestokey/-/evp_bytestokey-1.0.3.tgz#7fcbdb198dc71959432efe13842684e0525acb02"
@@ -5304,6 +5382,16 @@ koa@^2.11.0:
     type-is "^1.6.16"
     vary "^1.1.2"
 
+ledger-cosmos-js@^2.1.7:
+  version "2.1.7"
+  resolved "https://registry.yarnpkg.com/ledger-cosmos-js/-/ledger-cosmos-js-2.1.7.tgz#362d1139ac2504ccb56029abda053b2c5b290e8d"
+  integrity sha512-RyaP+6lRhllQTgk5X14PiZtsUE8bYP7mOiFkOMAzPQvUDdy8IZr17mDaH9whqHtE0wZd95YPN89VAhbfV+Re8w==
+  dependencies:
+    "@babel/runtime" "^7.7.4"
+    "@ledgerhq/hw-transport" "^4.77.0"
+    bech32 "^1.1.3"
+    ripemd160 "^2.0.2"
+
 lerna@^3.22.1:
   version "3.22.1"
   resolved "https://registry.yarnpkg.com/lerna/-/lerna-3.22.1.tgz#82027ac3da9c627fd8bf02ccfeff806a98e65b62"
@@ -7134,6 +7222,11 @@ redent@^3.0.0:
     indent-string "^4.0.0"
     strip-indent "^3.0.0"
 
+regenerator-runtime@^0.13.4:
+  version "0.13.7"
+  resolved "https://registry.yarnpkg.com/regenerator-runtime/-/regenerator-runtime-0.13.7.tgz#cac2dacc8a1ea675feaabaeb8ae833898ae46f55"
+  integrity sha512-a54FxoJDIr27pgf7IgeQGxmqUNYrcV338lf/6gH456HZ/PhX+5BcwHXG9ajESmwe6WRO0tAzRUrRmNONWgkrew==
+
 regex-not@^1.0.0, regex-not@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/regex-not/-/regex-not-1.0.2.tgz#1f4ece27e00b0b65e0247a6810e6a85d83a5752c"
@@ -7332,6 +7425,13 @@ rxjs@^6.4.0:
   dependencies:
     tslib "^1.9.0"
 
+rxjs@^6.5.3, rxjs@^6.6.3:
+  version "6.6.3"
+  resolved "https://registry.yarnpkg.com/rxjs/-/rxjs-6.6.3.tgz#8ca84635c4daa900c0d3967a6ee7ac60271ee552"
+  integrity sha512-trsQc+xYYXZ3urjOiJOuCOa5N3jAZ3eiSpQB5hIT8zGlL2QfnHLJ2r7GMkBGuIausdJN1OneaI6gQlsqNHHmZQ==
+  dependencies:
+    tslib "^1.9.0"
+
 safe-buffer@5.1.2, safe-buffer@~5.1.0, safe-buffer@~5.1.1:
   version "5.1.2"
   resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.1.2.tgz#991ec69d296e0313747d59bdfd2b745c35f8828d"

From 14464dcb44ef94cbed63c4277288be2375c6462a Mon Sep 17 00:00:00 2001
From: willclarktech <willclarktech@users.noreply.github.com>
Date: Wed, 9 Sep 2020 15:35:47 +0200
Subject: [PATCH 04/33] launchpad-ledger: Add DOM lib to tsconfig.json

---
 packages/launchpad-ledger/tsconfig.json | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/packages/launchpad-ledger/tsconfig.json b/packages/launchpad-ledger/tsconfig.json
index 167e8c02..39c5e368 100644
--- a/packages/launchpad-ledger/tsconfig.json
+++ b/packages/launchpad-ledger/tsconfig.json
@@ -4,9 +4,8 @@
     "baseUrl": ".",
     "outDir": "build",
     "declarationDir": "build/types",
-    "rootDir": "src"
+    "rootDir": "src",
+    "lib": ["es2017", "dom"]
   },
-  "include": [
-    "src/**/*"
-  ]
+  "include": ["src/**/*"]
 }

From cc49d373cb9ba8ad4356e6931779e058d2f2e59a Mon Sep 17 00:00:00 2001
From: willclarktech <willclarktech@users.noreply.github.com>
Date: Wed, 9 Sep 2020 16:14:55 +0200
Subject: [PATCH 05/33] launchpad-ledger: Add semver dependency

---
 packages/launchpad-ledger/package.json | 6 +++++-
 yarn.lock                              | 5 +++++
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/packages/launchpad-ledger/package.json b/packages/launchpad-ledger/package.json
index dbcc37ce..ee398f48 100644
--- a/packages/launchpad-ledger/package.json
+++ b/packages/launchpad-ledger/package.json
@@ -43,6 +43,10 @@
   },
   "dependencies": {
     "@ledgerhq/hw-transport-webusb": "^5.23.0",
-    "ledger-cosmos-js": "^2.1.7"
+    "ledger-cosmos-js": "^2.1.7",
+    "semver": "^7.3.2"
+  },
+  "devDependencies": {
+    "@types/semver": "^7.3.3"
   }
 }
diff --git a/yarn.lock b/yarn.lock
index 37811588..a28a3797 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1443,6 +1443,11 @@
   dependencies:
     "@types/node" "*"
 
+"@types/semver@^7.3.3":
+  version "7.3.3"
+  resolved "https://registry.yarnpkg.com/@types/semver/-/semver-7.3.3.tgz#3ad6ed949e7487e7bda6f886b4a2434a2c3d7b1a"
+  integrity sha512-jQxClWFzv9IXdLdhSaTf16XI3NYe6zrEbckSpb5xhKfPbWgIyAY0AFyWWWfaiDcBuj3UHmMkCIwSRqpKMTZL2Q==
+
 "@types/serve-static@*":
   version "1.13.3"
   resolved "https://registry.yarnpkg.com/@types/serve-static/-/serve-static-1.13.3.tgz#eb7e1c41c4468272557e897e9171ded5e2ded9d1"

From 59a02aa6e44bc7e523b57d4b5627aef4b1915c3b Mon Sep 17 00:00:00 2001
From: willclarktech <willclarktech@users.noreply.github.com>
Date: Wed, 9 Sep 2020 16:20:56 +0200
Subject: [PATCH 06/33] launchpad-ledger: Add
 @types/ledgerhq__hw-transport-webusb

---
 packages/launchpad-ledger/package.json |  1 +
 yarn.lock                              | 15 +++++++++++++++
 2 files changed, 16 insertions(+)

diff --git a/packages/launchpad-ledger/package.json b/packages/launchpad-ledger/package.json
index ee398f48..47d4e6a6 100644
--- a/packages/launchpad-ledger/package.json
+++ b/packages/launchpad-ledger/package.json
@@ -47,6 +47,7 @@
     "semver": "^7.3.2"
   },
   "devDependencies": {
+    "@types/ledgerhq__hw-transport-webusb": "^4.70.0",
     "@types/semver": "^7.3.3"
   }
 }
diff --git a/yarn.lock b/yarn.lock
index a28a3797..c0c33ea5 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1374,6 +1374,21 @@
   dependencies:
     "@types/koa" "*"
 
+"@types/ledgerhq__hw-transport-webusb@^4.70.0":
+  version "4.70.0"
+  resolved "https://registry.yarnpkg.com/@types/ledgerhq__hw-transport-webusb/-/ledgerhq__hw-transport-webusb-4.70.0.tgz#8e03b1f8bec52a8291ef41b00470b07f28285788"
+  integrity sha512-7YY+q85pwZfja9foc0RxmcgMwsxbBo9u/Qe9BFg0uKVcF6TZFcBT99+AHWj+40EmXL3BxzK3QB+aoSNed+v8Gg==
+  dependencies:
+    "@types/ledgerhq__hw-transport" "*"
+    "@types/node" "*"
+
+"@types/ledgerhq__hw-transport@*":
+  version "4.21.2"
+  resolved "https://registry.yarnpkg.com/@types/ledgerhq__hw-transport/-/ledgerhq__hw-transport-4.21.2.tgz#92eaea9e4669df2c8ec5292b694097d1629b05c1"
+  integrity sha512-NhJwkdxdsqj/ZTq9KuBYtN+rDYOVYrlR3ByYNfK78iUOIlmXcXFBtfkhBUpX8c7dbE5uJZOjDdM3EC7Kf3Fakg==
+  dependencies:
+    "@types/node" "*"
+
 "@types/libsodium-wrappers@^0.7.7":
   version "0.7.7"
   resolved "https://registry.yarnpkg.com/@types/libsodium-wrappers/-/libsodium-wrappers-0.7.7.tgz#cdb25e85458612ec80f0157c3815fac187d0b6d2"

From fbe1b2fa5f4fd21e288035eddbe0850e0468374d Mon Sep 17 00:00:00 2001
From: willclarktech <willclarktech@users.noreply.github.com>
Date: Wed, 9 Sep 2020 16:53:31 +0200
Subject: [PATCH 07/33] launchpad-ledger: Adjust build script

---
 packages/launchpad-ledger/package.json | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/launchpad-ledger/package.json b/packages/launchpad-ledger/package.json
index 47d4e6a6..4b54a1b1 100644
--- a/packages/launchpad-ledger/package.json
+++ b/packages/launchpad-ledger/package.json
@@ -28,7 +28,7 @@
     "format-text": "prettier --write --prose-wrap always --print-width 80 \"./*.md\"",
     "lint": "eslint --max-warnings 0 \"**/*.{js,ts}\"",
     "lint-fix": "eslint --max-warnings 0 \"**/*.{js,ts}\" --fix",
-    "move-types": "shx rm -rf ./types/* && shx mv build/types/* ./types && rm -rf ./types/testdata && shx rm -f ./types/*.{demo,spec}.d.ts && shx rm ./types/**/*.spec.d.ts",
+    "move-types": "shx rm -rf ./types/* && shx mv build/types/* ./types && rm -rf ./types/testdata && shx rm -f ./types/*.spec.d.ts",
     "format-types": "prettier --write --loglevel warn \"./types/**/*.d.ts\"",
     "prebuild": "shx rm -rf ./build",
     "build": "tsc",

From dd73f24ebf5f117fcc506e58cc1e5e06bb85f446 Mon Sep 17 00:00:00 2001
From: willclarktech <willclarktech@users.noreply.github.com>
Date: Wed, 9 Sep 2020 17:39:59 +0200
Subject: [PATCH 08/33] launchpad-ledger: Add @cosmjs/utils dependency

---
 packages/launchpad-ledger/package.json | 1 +
 1 file changed, 1 insertion(+)

diff --git a/packages/launchpad-ledger/package.json b/packages/launchpad-ledger/package.json
index 4b54a1b1..404f72d0 100644
--- a/packages/launchpad-ledger/package.json
+++ b/packages/launchpad-ledger/package.json
@@ -42,6 +42,7 @@
     "pack-web": "yarn build-or-skip && webpack --mode development --config webpack.web.config.js"
   },
   "dependencies": {
+    "@cosmjs/utils": "^0.22.2",
     "@ledgerhq/hw-transport-webusb": "^5.23.0",
     "ledger-cosmos-js": "^2.1.7",
     "semver": "^7.3.2"

From dc0d5d2649cae1965081b21f1db0a2e9729a574d Mon Sep 17 00:00:00 2001
From: willclarktech <willclarktech@users.noreply.github.com>
Date: Wed, 9 Sep 2020 18:14:33 +0200
Subject: [PATCH 09/33] launchpad-ledger: Add basic type declaration for
 ledger-cosmos-js

---
 .../custom_types/ledger-cosmos-js.d.ts        | 53 +++++++++++++++++++
 packages/launchpad-ledger/tsconfig.json       |  2 +-
 tsconfig.json                                 |  4 +-
 3 files changed, 56 insertions(+), 3 deletions(-)
 create mode 100644 packages/launchpad-ledger/custom_types/ledger-cosmos-js.d.ts

diff --git a/packages/launchpad-ledger/custom_types/ledger-cosmos-js.d.ts b/packages/launchpad-ledger/custom_types/ledger-cosmos-js.d.ts
new file mode 100644
index 00000000..f49d8461
--- /dev/null
+++ b/packages/launchpad-ledger/custom_types/ledger-cosmos-js.d.ts
@@ -0,0 +1,53 @@
+declare module "ledger-cosmos-js" {
+  import Transport from "@ledgerhq/hw-transport";
+
+  export interface ErrorResponse {
+    readonly return_code: number;
+    readonly error_message: string;
+  }
+
+  export interface VersionResponse {
+    readonly major: number;
+    readonly minor: number;
+    readonly patch: number;
+    readonly test_mode: boolean;
+    readonly error_message: string;
+    readonly device_locked: boolean;
+  }
+
+  export interface AppInfoResponse {
+    readonly appName: string;
+    readonly error_message: string;
+  }
+
+  export interface PublicKeyResponse {
+    readonly compressed_pk: Buffer;
+    readonly error_message: string;
+  }
+
+  export interface AddressAndPublicKeyResponse {
+    readonly compressed_pk: Buffer;
+    readonly address: string;
+    readonly error_message: string;
+  }
+
+  export interface SignResponse {
+    readonly signature: Buffer;
+    readonly error_message: string;
+  }
+
+  export default class CosmosApp {
+    static getBech32FromPK(hrp: string, pk: Buffer): string;
+
+    constructor(transport: Transport, scrambleKey?: string);
+
+    getVersion: () => Promise<VersionResponse | ErrorResponse>;
+    appInfo: () => Promise<AppInfoResponse | ErrorResponse>;
+    publicKey: (path: Array<number>) => Promise<PublicKeyResponse | ErrorResponse>;
+    showAddressAndPubKey: (
+      path: Array<number>,
+      hrp: string,
+    ) => Promise<AddressAndPublicKeyResponse | ErrorResponse>;
+    sign: (path: Array<number>, message: string) => Promise<SignResponse | ErrorResponse>;
+  }
+}
diff --git a/packages/launchpad-ledger/tsconfig.json b/packages/launchpad-ledger/tsconfig.json
index 39c5e368..44242629 100644
--- a/packages/launchpad-ledger/tsconfig.json
+++ b/packages/launchpad-ledger/tsconfig.json
@@ -7,5 +7,5 @@
     "rootDir": "src",
     "lib": ["es2017", "dom"]
   },
-  "include": ["src/**/*"]
+  "include": ["src/**/*", "./custom_types/*"]
 }
diff --git a/tsconfig.json b/tsconfig.json
index 7817c12b..b74563e3 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -4,6 +4,7 @@
     "declaration": true,
     "esModuleInterop": true,
     "forceConsistentCasingInFileNames": true,
+    "lib": ["es2017"],
     "module": "commonjs",
     "moduleResolution": "node",
     "newLine": "LF",
@@ -17,7 +18,6 @@
     "resolveJsonModule": true,
     "sourceMap": true,
     "strict": true,
-    "target": "es2017",
-    "lib": ["es2017"]
+    "target": "es2017"
   }
 }

From 33a7824215380eb4386c769b762177e344bbd0ef Mon Sep 17 00:00:00 2001
From: willclarktech <willclarktech@users.noreply.github.com>
Date: Wed, 9 Sep 2020 18:17:18 +0200
Subject: [PATCH 10/33] launchpad-ledger: Add LaunchpadLedger class

---
 packages/launchpad-ledger/src/index.ts        |   1 +
 .../launchpad-ledger/src/launchpadledger.ts   | 230 ++++++++++++++++++
 packages/launchpad-ledger/types/index.d.ts    |   1 +
 .../types/launchpadledger.d.ts                |  29 +++
 4 files changed, 261 insertions(+)
 create mode 100644 packages/launchpad-ledger/src/index.ts
 create mode 100644 packages/launchpad-ledger/src/launchpadledger.ts
 create mode 100644 packages/launchpad-ledger/types/index.d.ts
 create mode 100644 packages/launchpad-ledger/types/launchpadledger.d.ts

diff --git a/packages/launchpad-ledger/src/index.ts b/packages/launchpad-ledger/src/index.ts
new file mode 100644
index 00000000..0ca77769
--- /dev/null
+++ b/packages/launchpad-ledger/src/index.ts
@@ -0,0 +1 @@
+export { LaunchpadLedger } from "./launchpadledger";
diff --git a/packages/launchpad-ledger/src/launchpadledger.ts b/packages/launchpad-ledger/src/launchpadledger.ts
new file mode 100644
index 00000000..3f9f4216
--- /dev/null
+++ b/packages/launchpad-ledger/src/launchpadledger.ts
@@ -0,0 +1,230 @@
+import { Secp256k1Signature } from "@cosmjs/crypto";
+import { fromUtf8 } from "@cosmjs/encoding";
+import { assert } from "@cosmjs/utils";
+import Transport from "@ledgerhq/hw-transport";
+import TransportWebUsb from "@ledgerhq/hw-transport-webusb";
+import CosmosApp, {
+  AppInfoResponse,
+  PublicKeyResponse,
+  SignResponse,
+  VersionResponse,
+} from "ledger-cosmos-js";
+import semver from "semver";
+
+const defaultInteractionTimeout = 120; // seconds to wait for user action on Ledger, currently is always limited to 60
+const requiredCosmosAppVersion = "1.5.3";
+
+function isWindows(platform: string): boolean {
+  return platform.indexOf("Win") > -1;
+}
+
+function verifyBrowserIsSupported(platform: string, userAgent: string): void {
+  if (isWindows(platform)) {
+    throw new Error("Windows is not currently supported.");
+  }
+
+  const ua = userAgent.toLowerCase();
+  const isChrome = /chrome|crios/.test(ua) && !/edge|opr\//.test(ua);
+  if (!isChrome) {
+    throw new Error("Your browser does not support Ledger devices.");
+  }
+}
+
+async function createTransport(timeout: number): Promise<Transport> {
+  try {
+    const transport = await TransportWebUsb.create(timeout * 1000);
+    return transport;
+  } catch (error) {
+    const trimmedErrorMessage = error.message.trim();
+    if (trimmedErrorMessage.startsWith("No WebUSB interface found for your Ledger device")) {
+      throw new Error(
+        "Could not connect to a Ledger device. Please use Ledger Live to upgrade the Ledger firmware to version 1.5.5 or later.",
+      );
+    }
+    if (trimmedErrorMessage.startsWith("Unable to claim interface")) {
+      throw new Error("Could not access Ledger device. Is it being used in another tab?");
+    }
+    if (trimmedErrorMessage.startsWith("Not supported")) {
+      throw new Error(
+        "Your browser does not seem to support WebUSB yet. Try updating it to the latest version.",
+      );
+    }
+    if (trimmedErrorMessage.startsWith("No device selected")) {
+      throw new Error(
+        "You did not select a Ledger device. If you did not see your Ledger, check if the Ledger is plugged in and unlocked.",
+      );
+    }
+
+    throw error;
+  }
+}
+
+const cosmosHdPath = [44, 118, 0, 0, 0];
+const cosmosBech32Prefix = "cosmos";
+
+export class LaunchpadLedger {
+  private readonly testModeAllowed: boolean;
+  private readonly hdPath: number[];
+  private readonly prefix: string;
+  private cosmosApp: CosmosApp | null;
+  public readonly platform: string;
+  public readonly userAgent: string;
+
+  constructor(
+    { testModeAllowed }: { testModeAllowed: boolean } = { testModeAllowed: false },
+    hdPath: number[] = cosmosHdPath,
+    prefix: string = cosmosBech32Prefix,
+  ) {
+    this.testModeAllowed = testModeAllowed;
+    this.hdPath = hdPath;
+    this.prefix = prefix;
+    this.cosmosApp = null;
+    this.platform = navigator.platform;
+    this.userAgent = navigator.userAgent;
+  }
+
+  // // quickly test connection and compatibility with the LaunchpadLedger device throwing away the connection
+  // async testDevice(): Promise<LaunchpadLedger> {
+  //   // poll device with low timeout to check if the device is connected
+  //   const secondsTimeout = 3; // a lower value always timeouts
+  //   await this.connect(secondsTimeout);
+  //   this.cosmosApp = null;
+
+  //   return this;
+  // }
+
+  async connect(timeout = defaultInteractionTimeout): Promise<LaunchpadLedger> {
+    // assume good connection if connected once
+    if (this.cosmosApp) {
+      return this;
+    }
+
+    verifyBrowserIsSupported(this.platform, this.userAgent);
+
+    const transport = await createTransport(timeout * 1000);
+    this.cosmosApp = new CosmosApp(transport);
+
+    await this.verifyDeviceIsReady();
+    return this;
+  }
+
+  async getCosmosAppVersion(): Promise<string> {
+    await this.connect();
+    assert(this.cosmosApp, "Cosmos Ledger App is not connected");
+
+    const response = await this.cosmosApp.getVersion();
+    this.handleLedgerErrors(response);
+    // eslint-disable-next-line @typescript-eslint/naming-convention
+    const { major, minor, patch, test_mode: testMode } = response as VersionResponse;
+    this.verifyAppMode(testMode);
+    return `${major}.${minor}.${patch}`;
+  }
+
+  async getPubKey(): Promise<Buffer> {
+    await this.connect();
+    assert(this.cosmosApp, "Cosmos Ledger App is not connected");
+
+    const response = await this.cosmosApp.publicKey(this.hdPath);
+    this.handleLedgerErrors(response);
+    return (response as PublicKeyResponse).compressed_pk;
+  }
+
+  async getCosmosAddress(): Promise<string> {
+    const pubKey = await this.getPubKey();
+    return CosmosApp.getBech32FromPK(this.prefix, pubKey);
+  }
+
+  // async verifyLedgerAddress(): Promise<void> {
+  //   await this.connect();
+  //   assert(this.cosmosApp, "Cosmos Ledger App is not connected");
+
+  //   const response = await this.cosmosApp.showAddressAndPubKey(this.hdPath, this.bech32Prefix);
+  //   this.handleLedgerErrors(response, {
+  //     rejectionMessage: "Displayed address was rejected by the user",
+  //   });
+  // }
+
+  async sign(message: Uint8Array): Promise<Uint8Array> {
+    await this.connect();
+    assert(this.cosmosApp, "Cosmos Ledger App is not connected");
+
+    const response = await this.cosmosApp.sign(this.hdPath, fromUtf8(message));
+    this.handleLedgerErrors(response, {
+      rejectionMessage: "Transaction signing request was rejected by the user",
+    });
+    const parsedSignature = Secp256k1Signature.fromDer((response as SignResponse).signature);
+    return Uint8Array.from([...parsedSignature.r(), ...parsedSignature.s()]);
+  }
+
+  private verifyAppMode(testMode: boolean): void {
+    if (testMode && !this.testModeAllowed) {
+      throw new Error(`DANGER: The Cosmos Ledger app is in test mode and should not be used on mainnet!`);
+    }
+  }
+
+  private async getOpenAppName(): Promise<string> {
+    await this.connect();
+    assert(this.cosmosApp, "Cosmos Ledger App is not connected");
+
+    const response = await this.cosmosApp.appInfo();
+    this.handleLedgerErrors(response);
+    return (response as AppInfoResponse).appName;
+  }
+
+  private async verifyAppVersion(): Promise<void> {
+    const version = await this.getCosmosAppVersion();
+    if (!semver.gte(version, requiredCosmosAppVersion)) {
+      throw new Error("Outdated version: Please update Cosmos Ledger App to the latest version.");
+    }
+  }
+
+  private async verifyCosmosAppIsOpen(): Promise<void> {
+    const appName = await this.getOpenAppName();
+
+    if (appName.toLowerCase() === `dashboard`) {
+      throw new Error(`Please open the Cosmos Ledger app on your Ledger device.`);
+    }
+    if (appName.toLowerCase() !== `cosmos`) {
+      throw new Error(`Please close ${appName} and open the Cosmos Ledger app on your Ledger device.`);
+    }
+  }
+
+  private async verifyDeviceIsReady(): Promise<void> {
+    await this.verifyAppVersion();
+    await this.verifyCosmosAppIsOpen();
+  }
+
+  /* eslint-disable @typescript-eslint/naming-convention */
+  private handleLedgerErrors(
+    {
+      error_message: errorMessage,
+      device_locked: deviceLocked = false,
+    }: { error_message: string; device_locked?: boolean },
+    { rejectionMessage = "Request was rejected by the user" } = {},
+  ): void {
+    if (deviceLocked) {
+      throw new Error("Ledger’s screensaver mode is on");
+    }
+    switch (errorMessage) {
+      case "U2F: Timeout":
+        throw new Error("Connection timed out. Please try again.");
+      case "Cosmos app does not seem to be open":
+        throw new Error("Cosmos app is not open");
+      case "Command not allowed":
+        throw new Error("Transaction rejected");
+      case "Transaction rejected":
+        throw new Error(rejectionMessage);
+      case "Unknown Status Code: 26628":
+        throw new Error("Ledger’s screensaver mode is on");
+      case "Instruction not supported":
+        throw new Error(
+          `Your Cosmos Ledger App is not up to date. Please update to version ${requiredCosmosAppVersion}.`,
+        );
+      case "No errors":
+        break;
+      default:
+        throw new Error(`Ledger Native Error: ${errorMessage}`);
+    }
+  }
+  /* eslint-enable */
+}
diff --git a/packages/launchpad-ledger/types/index.d.ts b/packages/launchpad-ledger/types/index.d.ts
new file mode 100644
index 00000000..0ca77769
--- /dev/null
+++ b/packages/launchpad-ledger/types/index.d.ts
@@ -0,0 +1 @@
+export { LaunchpadLedger } from "./launchpadledger";
diff --git a/packages/launchpad-ledger/types/launchpadledger.d.ts b/packages/launchpad-ledger/types/launchpadledger.d.ts
new file mode 100644
index 00000000..323bcecc
--- /dev/null
+++ b/packages/launchpad-ledger/types/launchpadledger.d.ts
@@ -0,0 +1,29 @@
+/// <reference types="node" />
+export declare class LaunchpadLedger {
+  private readonly testModeAllowed;
+  private readonly hdPath;
+  private readonly prefix;
+  private cosmosApp;
+  readonly platform: string;
+  readonly userAgent: string;
+  constructor(
+    {
+      testModeAllowed,
+    }?: {
+      testModeAllowed: boolean;
+    },
+    hdPath?: number[],
+    prefix?: string,
+  );
+  connect(timeout?: number): Promise<LaunchpadLedger>;
+  getCosmosAppVersion(): Promise<string>;
+  getPubKey(): Promise<Buffer>;
+  getCosmosAddress(): Promise<string>;
+  sign(message: Uint8Array): Promise<Uint8Array>;
+  private verifyAppMode;
+  private getOpenAppName;
+  private verifyAppVersion;
+  private verifyCosmosAppIsOpen;
+  private verifyDeviceIsReady;
+  private handleLedgerErrors;
+}

From 59c5ae5c8b9ae884b821bb058000e803cf081691 Mon Sep 17 00:00:00 2001
From: willclarktech <willclarktech@users.noreply.github.com>
Date: Thu, 10 Sep 2020 11:26:11 +0200
Subject: [PATCH 11/33] launchpad-ledger: Add demo html/css

---
 packages/launchpad-ledger/ledger-demo.css  | 24 ++++++++++
 packages/launchpad-ledger/ledger-demo.html | 54 ++++++++++++++++++++++
 2 files changed, 78 insertions(+)
 create mode 100644 packages/launchpad-ledger/ledger-demo.css
 create mode 100644 packages/launchpad-ledger/ledger-demo.html

diff --git a/packages/launchpad-ledger/ledger-demo.css b/packages/launchpad-ledger/ledger-demo.css
new file mode 100644
index 00000000..4cc56f58
--- /dev/null
+++ b/packages/launchpad-ledger/ledger-demo.css
@@ -0,0 +1,24 @@
+div {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  margin: auto;
+  padding: 0.5em;
+}
+
+button {
+  padding: 1em;
+}
+
+label {
+  margin-right: 1em;
+}
+
+input {
+  width: 32em;
+}
+
+textarea {
+  width: 32em;
+  height: 14em;
+}
diff --git a/packages/launchpad-ledger/ledger-demo.html b/packages/launchpad-ledger/ledger-demo.html
new file mode 100644
index 00000000..ecff0065
--- /dev/null
+++ b/packages/launchpad-ledger/ledger-demo.html
@@ -0,0 +1,54 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>Ledger Demo</title>
+    <link rel="stylesheet" href="ledger-demo.css"></style>
+    <script src="dist/demo/ledger.js"></script>
+  </head>
+  <body>
+    <div>
+      <h1>Ledger Demo</h1>
+    </div>
+    <div>
+      <ol>
+        <li>Connect the Ledger device via USB</li>
+        <li>Open the Cosmos app on the Ledger device</li>
+        <li>Click the buttons below</li>
+      </ol>
+    </div>
+    <div>
+      <button onclick="getAccounts()">
+        Get Accounts
+      </button>
+    </div>
+    <div id="accounts"></div>
+    <div>
+      <label>Address</label>
+      <input id="address" type="text" value=""></input>
+    </div>
+    <div>
+      <label>Message</label>
+      <textarea id="message">
+{
+  "account_number": 0,
+  "chain_id": "testing",
+  "fee": {
+    "amount": [{ "amount": 100, "denom": "ucosm" }],
+    "gas": 250
+  },
+  "memo": "Some memo",
+  "msgs": [],
+  "sequence": 0
+}
+      </textarea>
+    </div>
+    <div>
+      <button onclick="sign()">
+        Sign Message
+      </button>
+    </div>
+    <div id="signature"></div>
+  </body>
+</html>

From a5891f147fb89f9ce110976573b9c88cafba4d76 Mon Sep 17 00:00:00 2001
From: willclarktech <willclarktech@users.noreply.github.com>
Date: Thu, 10 Sep 2020 11:32:43 +0200
Subject: [PATCH 12/33] launchpad-ledger: Add ledger demo and wallet

---
 packages/launchpad-ledger/src/index.ts        |  1 +
 packages/launchpad-ledger/src/ledger.demo.ts  | 38 ++++++++++++++++
 packages/launchpad-ledger/src/ledgerwallet.ts | 45 +++++++++++++++++++
 packages/launchpad-ledger/types/index.d.ts    |  1 +
 .../launchpad-ledger/types/ledger.demo.d.ts   |  1 +
 .../launchpad-ledger/types/ledgerwallet.d.ts  | 13 ++++++
 .../launchpad-ledger/webpack.web.config.js    | 24 +++++++---
 7 files changed, 116 insertions(+), 7 deletions(-)
 create mode 100644 packages/launchpad-ledger/src/ledger.demo.ts
 create mode 100644 packages/launchpad-ledger/src/ledgerwallet.ts
 create mode 100644 packages/launchpad-ledger/types/ledger.demo.d.ts
 create mode 100644 packages/launchpad-ledger/types/ledgerwallet.d.ts

diff --git a/packages/launchpad-ledger/src/index.ts b/packages/launchpad-ledger/src/index.ts
index 0ca77769..f0148827 100644
--- a/packages/launchpad-ledger/src/index.ts
+++ b/packages/launchpad-ledger/src/index.ts
@@ -1 +1,2 @@
 export { LaunchpadLedger } from "./launchpadledger";
+export { LedgerWallet } from "./ledgerwallet";
diff --git a/packages/launchpad-ledger/src/ledger.demo.ts b/packages/launchpad-ledger/src/ledger.demo.ts
new file mode 100644
index 00000000..023b466f
--- /dev/null
+++ b/packages/launchpad-ledger/src/ledger.demo.ts
@@ -0,0 +1,38 @@
+import { toHex, toUtf8 } from "@cosmjs/encoding";
+
+import { LedgerWallet } from "./ledgerwallet";
+
+declare const window: any;
+declare const document: any;
+
+const ledgerWallet = new LedgerWallet({ testModeAllowed: true });
+
+window.getAccounts = async function getAccounts(): Promise<void> {
+  const addressInput = document.getElementById("address");
+  const accountsDiv = document.getElementById("accounts");
+  accountsDiv.textContent = "Loading...";
+
+  try {
+    const accounts = await ledgerWallet.getAccounts();
+    const prettyAccounts = accounts.map((account) => ({ ...account, pubkey: toHex(account.pubkey) }));
+    accountsDiv.textContent = JSON.stringify(prettyAccounts, null, "\t");
+    addressInput.value = accounts[0].address;
+  } catch (error) {
+    accountsDiv.textContent = error;
+  }
+};
+
+window.sign = async function sign(): Promise<void> {
+  const signatureDiv = document.getElementById("signature");
+  signatureDiv.textContent = "Loading...";
+
+  try {
+    const address = document.getElementById("address").value;
+    const rawMessage = document.getElementById("message").textContent;
+    const message = JSON.stringify(JSON.parse(rawMessage));
+    const signature = await ledgerWallet.sign(address, toUtf8(message));
+    signatureDiv.textContent = JSON.stringify(signature, null, "\t");
+  } catch (error) {
+    signatureDiv.textContent = error;
+  }
+};
diff --git a/packages/launchpad-ledger/src/ledgerwallet.ts b/packages/launchpad-ledger/src/ledgerwallet.ts
new file mode 100644
index 00000000..55e0ae13
--- /dev/null
+++ b/packages/launchpad-ledger/src/ledgerwallet.ts
@@ -0,0 +1,45 @@
+import { AccountData, encodeSecp256k1Signature, OfflineSigner, StdSignature } from "@cosmjs/launchpad";
+
+import { LaunchpadLedger } from "./launchpadledger";
+
+interface LedgerWalletOptions {
+  readonly testModeAllowed: boolean;
+}
+
+export class LedgerWallet implements OfflineSigner {
+  private readonly ledger: LaunchpadLedger;
+  private address: string | undefined;
+  private pubkey: Uint8Array | undefined;
+
+  constructor(options?: LedgerWalletOptions) {
+    this.ledger = new LaunchpadLedger(options);
+  }
+
+  public async getAccounts(): Promise<readonly AccountData[]> {
+    await this.ledger.connect();
+
+    const address = (this.address = this.address || (await this.ledger.getCosmosAddress()));
+    const pubkey = (this.pubkey = this.pubkey || (await this.ledger.getPubKey()));
+
+    return [
+      {
+        algo: "secp256k1",
+        address: address,
+        pubkey: pubkey,
+      },
+    ];
+  }
+
+  public async sign(address: string, message: Uint8Array): Promise<StdSignature> {
+    await this.ledger.connect();
+
+    const thisAddress = (this.address = this.address || (await this.ledger.getCosmosAddress()));
+    if (address !== thisAddress) {
+      throw new Error(`Address ${address} not found in wallet`);
+    }
+
+    const signature = await this.ledger.sign(message);
+    const pubkey = (this.pubkey = this.pubkey || (await this.ledger.getPubKey()));
+    return encodeSecp256k1Signature(pubkey, signature);
+  }
+}
diff --git a/packages/launchpad-ledger/types/index.d.ts b/packages/launchpad-ledger/types/index.d.ts
index 0ca77769..f0148827 100644
--- a/packages/launchpad-ledger/types/index.d.ts
+++ b/packages/launchpad-ledger/types/index.d.ts
@@ -1 +1,2 @@
 export { LaunchpadLedger } from "./launchpadledger";
+export { LedgerWallet } from "./ledgerwallet";
diff --git a/packages/launchpad-ledger/types/ledger.demo.d.ts b/packages/launchpad-ledger/types/ledger.demo.d.ts
new file mode 100644
index 00000000..cb0ff5c3
--- /dev/null
+++ b/packages/launchpad-ledger/types/ledger.demo.d.ts
@@ -0,0 +1 @@
+export {};
diff --git a/packages/launchpad-ledger/types/ledgerwallet.d.ts b/packages/launchpad-ledger/types/ledgerwallet.d.ts
new file mode 100644
index 00000000..f47f48b2
--- /dev/null
+++ b/packages/launchpad-ledger/types/ledgerwallet.d.ts
@@ -0,0 +1,13 @@
+import { AccountData, OfflineSigner, StdSignature } from "@cosmjs/launchpad";
+interface LedgerWalletOptions {
+  readonly testModeAllowed: boolean;
+}
+export declare class LedgerWallet implements OfflineSigner {
+  private readonly ledger;
+  private address;
+  private pubkey;
+  constructor(options?: LedgerWalletOptions);
+  getAccounts(): Promise<readonly AccountData[]>;
+  sign(address: string, message: Uint8Array): Promise<StdSignature>;
+}
+export {};
diff --git a/packages/launchpad-ledger/webpack.web.config.js b/packages/launchpad-ledger/webpack.web.config.js
index 7373cace..fe7d59e8 100644
--- a/packages/launchpad-ledger/webpack.web.config.js
+++ b/packages/launchpad-ledger/webpack.web.config.js
@@ -1,19 +1,29 @@
 const glob = require("glob");
 const path = require("path");
-const webpack = require("webpack");
+// const webpack = require("webpack");
 
 const target = "web";
-const distdir = path.join(__dirname, "dist", "web");
+// const distdir = path.join(__dirname, "dist", "web");
+const demodir = path.join(__dirname, "dist", "demo");
 
 module.exports = [
+  // {
+  //   // bundle used for Karma tests
+  //   target: target,
+  //   entry: glob.sync("./build/**/*.spec.js"),
+  //   output: {
+  //     path: distdir,
+  //     filename: "tests.js",
+  //   },
+  //   plugins: [new webpack.EnvironmentPlugin(["WASMD_ENABLED"])],
+  // },
   {
-    // bundle used for Karma tests
+    // bundle used for Ledger demo
     target: target,
-    entry: glob.sync("./build/**/*.spec.js"),
+    entry: glob.sync("./build/**/*.demo.js"),
     output: {
-      path: distdir,
-      filename: "tests.js",
+      path: demodir,
+      filename: "ledger.js",
     },
-    plugins: [new webpack.EnvironmentPlugin(["WASMD_ENABLED"])],
   },
 ];

From 5a970ab6ca87337b75faa5adab45b8bd00eb3422 Mon Sep 17 00:00:00 2001
From: willclarktech <willclarktech@users.noreply.github.com>
Date: Thu, 10 Sep 2020 11:34:53 +0200
Subject: [PATCH 13/33] launchpad-ledger: Add @cosmjs/launchpad dep

---
 packages/launchpad-ledger/package.json | 1 +
 1 file changed, 1 insertion(+)

diff --git a/packages/launchpad-ledger/package.json b/packages/launchpad-ledger/package.json
index 404f72d0..7246cd09 100644
--- a/packages/launchpad-ledger/package.json
+++ b/packages/launchpad-ledger/package.json
@@ -42,6 +42,7 @@
     "pack-web": "yarn build-or-skip && webpack --mode development --config webpack.web.config.js"
   },
   "dependencies": {
+    "@cosmjs/launchpad": "^0.22.2",
     "@cosmjs/utils": "^0.22.2",
     "@ledgerhq/hw-transport-webusb": "^5.23.0",
     "ledger-cosmos-js": "^2.1.7",

From 78fb56856c6be0c2cfa7f86c94e564e425f901dd Mon Sep 17 00:00:00 2001
From: willclarktech <willclarktech@users.noreply.github.com>
Date: Thu, 10 Sep 2020 11:46:54 +0200
Subject: [PATCH 14/33] launchpad-ledger: Rename isChrome -> isChromeOrBrave

---
 packages/launchpad-ledger/src/launchpadledger.ts | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/packages/launchpad-ledger/src/launchpadledger.ts b/packages/launchpad-ledger/src/launchpadledger.ts
index 3f9f4216..38b0ffb3 100644
--- a/packages/launchpad-ledger/src/launchpadledger.ts
+++ b/packages/launchpad-ledger/src/launchpadledger.ts
@@ -23,9 +23,8 @@ function verifyBrowserIsSupported(platform: string, userAgent: string): void {
     throw new Error("Windows is not currently supported.");
   }
 
-  const ua = userAgent.toLowerCase();
-  const isChrome = /chrome|crios/.test(ua) && !/edge|opr\//.test(ua);
-  if (!isChrome) {
+  const isChromeOrBrave = /chrome|crios/i.test(userAgent) && !/edge|opr\//i.test(userAgent);
+  if (!isChromeOrBrave) {
     throw new Error("Your browser does not support Ledger devices.");
   }
 }

From 4fe034e9949cc98d62c5e31183a53643659e2773 Mon Sep 17 00:00:00 2001
From: willclarktech <willclarktech@users.noreply.github.com>
Date: Thu, 10 Sep 2020 11:51:39 +0200
Subject: [PATCH 15/33] crypto: Add Secp256k1Signature.toFixedLength method

---
 packages/crypto/src/secp256k1signature.spec.ts | 9 +++++++++
 packages/crypto/src/secp256k1signature.ts      | 4 ++++
 packages/crypto/types/secp256k1signature.d.ts  | 1 +
 3 files changed, 14 insertions(+)

diff --git a/packages/crypto/src/secp256k1signature.spec.ts b/packages/crypto/src/secp256k1signature.spec.ts
index 27b58767..9baa7fe6 100644
--- a/packages/crypto/src/secp256k1signature.spec.ts
+++ b/packages/crypto/src/secp256k1signature.spec.ts
@@ -76,6 +76,15 @@ describe("Secp256k1Signature", () => {
     ).toThrowError(/unsigned integer s must be encoded as unpadded big endian./i);
   });
 
+  it("can be encoded as fixed length", () => {
+    const signature = new Secp256k1Signature(new Uint8Array([0x22, 0x33]), new Uint8Array([0xaa]));
+    expect(signature.toFixedLength()).toEqual(
+      fromHex(
+        "000000000000000000000000000000000000000000000000000000000000223300000000000000000000000000000000000000000000000000000000000000aa",
+      ),
+    );
+  });
+
   it("can encode to DER", () => {
     // Signature 3045022100f25b86e1d8a11d72475b3ed273b0781c7d7f6f9e1dae0dd5d3ee9b84f3fab891022063d9c4e1391de077244583e9a6e3d8e8e1f236a3bf5963735353b93b1a3ba935
     // decoded by http://asn1-playground.oss.com/
diff --git a/packages/crypto/src/secp256k1signature.ts b/packages/crypto/src/secp256k1signature.ts
index 0defcb19..be10f026 100644
--- a/packages/crypto/src/secp256k1signature.ts
+++ b/packages/crypto/src/secp256k1signature.ts
@@ -119,6 +119,10 @@ export class Secp256k1Signature {
     }
   }
 
+  public toFixedLength(): Uint8Array {
+    return new Uint8Array([...this.r(32), ...this.s(32)]);
+  }
+
   public toDer(): Uint8Array {
     // DER supports negative integers but our data is unsigned. Thus we need to prepend
     // a leading 0 byte when the higest bit is set to differentiate nagative values
diff --git a/packages/crypto/types/secp256k1signature.d.ts b/packages/crypto/types/secp256k1signature.d.ts
index 1b7a5025..627b53e2 100644
--- a/packages/crypto/types/secp256k1signature.d.ts
+++ b/packages/crypto/types/secp256k1signature.d.ts
@@ -12,6 +12,7 @@ export declare class Secp256k1Signature {
   constructor(r: Uint8Array, s: Uint8Array);
   r(length?: number): Uint8Array;
   s(length?: number): Uint8Array;
+  toFixedLength(): Uint8Array;
   toDer(): Uint8Array;
 }
 /**

From f071b8d25d38122989187804d82aeb178fb8407d Mon Sep 17 00:00:00 2001
From: willclarktech <willclarktech@users.noreply.github.com>
Date: Thu, 10 Sep 2020 11:52:59 +0200
Subject: [PATCH 16/33] launchpad-ledger: Use Secp256k1Signature.toFixedLength

---
 packages/launchpad-ledger/src/launchpadledger.ts | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/packages/launchpad-ledger/src/launchpadledger.ts b/packages/launchpad-ledger/src/launchpadledger.ts
index 38b0ffb3..78e43947 100644
--- a/packages/launchpad-ledger/src/launchpadledger.ts
+++ b/packages/launchpad-ledger/src/launchpadledger.ts
@@ -151,8 +151,7 @@ export class LaunchpadLedger {
     this.handleLedgerErrors(response, {
       rejectionMessage: "Transaction signing request was rejected by the user",
     });
-    const parsedSignature = Secp256k1Signature.fromDer((response as SignResponse).signature);
-    return Uint8Array.from([...parsedSignature.r(), ...parsedSignature.s()]);
+    return Secp256k1Signature.fromDer((response as SignResponse).signature).toFixedLength();
   }
 
   private verifyAppMode(testMode: boolean): void {

From 521fdcc2ab5a7e53e0ef2a737b4c7cc88ec1bd0e Mon Sep 17 00:00:00 2001
From: willclarktech <willclarktech@users.noreply.github.com>
Date: Thu, 10 Sep 2020 12:27:29 +0200
Subject: [PATCH 17/33] launchpad-ledger: Use HD path helpers

---
 .../launchpad-ledger/src/launchpadledger.ts   | 19 +++++++++++++------
 .../types/launchpadledger.d.ts                |  3 ++-
 2 files changed, 15 insertions(+), 7 deletions(-)

diff --git a/packages/launchpad-ledger/src/launchpadledger.ts b/packages/launchpad-ledger/src/launchpadledger.ts
index 78e43947..cf7a75e0 100644
--- a/packages/launchpad-ledger/src/launchpadledger.ts
+++ b/packages/launchpad-ledger/src/launchpadledger.ts
@@ -1,5 +1,6 @@
-import { Secp256k1Signature } from "@cosmjs/crypto";
+import { Secp256k1Signature, Slip10RawIndex } from "@cosmjs/crypto";
 import { fromUtf8 } from "@cosmjs/encoding";
+import { makeCosmoshubPath } from "@cosmjs/launchpad";
 import { assert } from "@cosmjs/utils";
 import Transport from "@ledgerhq/hw-transport";
 import TransportWebUsb from "@ledgerhq/hw-transport-webusb";
@@ -58,12 +59,16 @@ async function createTransport(timeout: number): Promise<Transport> {
   }
 }
 
-const cosmosHdPath = [44, 118, 0, 0, 0];
+function unharden(hdPath: readonly Slip10RawIndex[]): number[] {
+  return hdPath.map((n) => (n.isHardened() ? n.toNumber() - 2 ** 31 : n.toNumber()));
+}
+
+const cosmosHdPath = makeCosmoshubPath(0);
 const cosmosBech32Prefix = "cosmos";
 
 export class LaunchpadLedger {
   private readonly testModeAllowed: boolean;
-  private readonly hdPath: number[];
+  private readonly hdPath: readonly Slip10RawIndex[];
   private readonly prefix: string;
   private cosmosApp: CosmosApp | null;
   public readonly platform: string;
@@ -71,7 +76,7 @@ export class LaunchpadLedger {
 
   constructor(
     { testModeAllowed }: { testModeAllowed: boolean } = { testModeAllowed: false },
-    hdPath: number[] = cosmosHdPath,
+    hdPath: readonly Slip10RawIndex[] = cosmosHdPath,
     prefix: string = cosmosBech32Prefix,
   ) {
     this.testModeAllowed = testModeAllowed;
@@ -123,7 +128,8 @@ export class LaunchpadLedger {
     await this.connect();
     assert(this.cosmosApp, "Cosmos Ledger App is not connected");
 
-    const response = await this.cosmosApp.publicKey(this.hdPath);
+    // ledger-cosmos-js hardens the first three indices
+    const response = await this.cosmosApp.publicKey(unharden(this.hdPath));
     this.handleLedgerErrors(response);
     return (response as PublicKeyResponse).compressed_pk;
   }
@@ -147,7 +153,8 @@ export class LaunchpadLedger {
     await this.connect();
     assert(this.cosmosApp, "Cosmos Ledger App is not connected");
 
-    const response = await this.cosmosApp.sign(this.hdPath, fromUtf8(message));
+    // ledger-cosmos-js hardens the first three indices
+    const response = await this.cosmosApp.sign(unharden(this.hdPath), fromUtf8(message));
     this.handleLedgerErrors(response, {
       rejectionMessage: "Transaction signing request was rejected by the user",
     });
diff --git a/packages/launchpad-ledger/types/launchpadledger.d.ts b/packages/launchpad-ledger/types/launchpadledger.d.ts
index 323bcecc..4dbf3064 100644
--- a/packages/launchpad-ledger/types/launchpadledger.d.ts
+++ b/packages/launchpad-ledger/types/launchpadledger.d.ts
@@ -1,4 +1,5 @@
 /// <reference types="node" />
+import { Slip10RawIndex } from "@cosmjs/crypto";
 export declare class LaunchpadLedger {
   private readonly testModeAllowed;
   private readonly hdPath;
@@ -12,7 +13,7 @@ export declare class LaunchpadLedger {
     }?: {
       testModeAllowed: boolean;
     },
-    hdPath?: number[],
+    hdPath?: readonly Slip10RawIndex[],
     prefix?: string,
   );
   connect(timeout?: number): Promise<LaunchpadLedger>;

From 461edfb358819b71a9bcab51ccedd6b927038842 Mon Sep 17 00:00:00 2001
From: willclarktech <willclarktech@users.noreply.github.com>
Date: Thu, 10 Sep 2020 13:13:51 +0200
Subject: [PATCH 18/33] launchpad-ledger: Remove demo from types

---
 packages/launchpad-ledger/package.json           | 2 +-
 packages/launchpad-ledger/types/ledger.demo.d.ts | 1 -
 2 files changed, 1 insertion(+), 2 deletions(-)
 delete mode 100644 packages/launchpad-ledger/types/ledger.demo.d.ts

diff --git a/packages/launchpad-ledger/package.json b/packages/launchpad-ledger/package.json
index 7246cd09..20720c62 100644
--- a/packages/launchpad-ledger/package.json
+++ b/packages/launchpad-ledger/package.json
@@ -28,7 +28,7 @@
     "format-text": "prettier --write --prose-wrap always --print-width 80 \"./*.md\"",
     "lint": "eslint --max-warnings 0 \"**/*.{js,ts}\"",
     "lint-fix": "eslint --max-warnings 0 \"**/*.{js,ts}\" --fix",
-    "move-types": "shx rm -rf ./types/* && shx mv build/types/* ./types && rm -rf ./types/testdata && shx rm -f ./types/*.spec.d.ts",
+    "move-types": "shx rm -rf ./types/* && shx mv build/types/* ./types && rm -rf ./types/testdata && shx rm -f ./types/*.demo.d.ts",
     "format-types": "prettier --write --loglevel warn \"./types/**/*.d.ts\"",
     "prebuild": "shx rm -rf ./build",
     "build": "tsc",
diff --git a/packages/launchpad-ledger/types/ledger.demo.d.ts b/packages/launchpad-ledger/types/ledger.demo.d.ts
deleted file mode 100644
index cb0ff5c3..00000000
--- a/packages/launchpad-ledger/types/ledger.demo.d.ts
+++ /dev/null
@@ -1 +0,0 @@
-export {};

From 79e4af464322d3ad2896840710dbe86ab8d74b8c Mon Sep 17 00:00:00 2001
From: willclarktech <willclarktech@users.noreply.github.com>
Date: Tue, 15 Sep 2020 10:52:06 +0200
Subject: [PATCH 19/33] launchpad-ledger: Fix README

---
 packages/launchpad-ledger/README.md | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/packages/launchpad-ledger/README.md b/packages/launchpad-ledger/README.md
index e8c0ad23..9b547645 100644
--- a/packages/launchpad-ledger/README.md
+++ b/packages/launchpad-ledger/README.md
@@ -2,11 +2,8 @@
 
 [![npm version](https://img.shields.io/npm/v/@cosmjs/launchpad-ledger.svg)](https://www.npmjs.com/package/@cosmjs/launchpad-ledger)
 
-```
-
 ## License
 
 This package is part of the cosmjs repository, licensed under the Apache License
 2.0 (see [NOTICE](https://github.com/CosmWasm/cosmjs/blob/master/NOTICE) and
 [LICENSE](https://github.com/CosmWasm/cosmjs/blob/master/LICENSE)).
-```

From d43ada9660e02348717663d831b4d4a3eb7ec6f8 Mon Sep 17 00:00:00 2001
From: willclarktech <willclarktech@users.noreply.github.com>
Date: Tue, 15 Sep 2020 10:54:37 +0200
Subject: [PATCH 20/33] launchpad-ledger: Rename LedgerWallet -> LedgerSigner

---
 packages/launchpad-ledger/src/index.ts                    | 2 +-
 packages/launchpad-ledger/src/ledger.demo.ts              | 8 ++++----
 .../src/{ledgerwallet.ts => ledgersigner.ts}              | 6 +++---
 packages/launchpad-ledger/types/index.d.ts                | 2 +-
 .../types/{ledgerwallet.d.ts => ledgersigner.d.ts}        | 6 +++---
 5 files changed, 12 insertions(+), 12 deletions(-)
 rename packages/launchpad-ledger/src/{ledgerwallet.ts => ledgersigner.ts} (90%)
 rename packages/launchpad-ledger/types/{ledgerwallet.d.ts => ledgersigner.d.ts} (69%)

diff --git a/packages/launchpad-ledger/src/index.ts b/packages/launchpad-ledger/src/index.ts
index f0148827..155dfd14 100644
--- a/packages/launchpad-ledger/src/index.ts
+++ b/packages/launchpad-ledger/src/index.ts
@@ -1,2 +1,2 @@
 export { LaunchpadLedger } from "./launchpadledger";
-export { LedgerWallet } from "./ledgerwallet";
+export { LedgerSigner } from "./ledgersigner";
diff --git a/packages/launchpad-ledger/src/ledger.demo.ts b/packages/launchpad-ledger/src/ledger.demo.ts
index 023b466f..46a9259e 100644
--- a/packages/launchpad-ledger/src/ledger.demo.ts
+++ b/packages/launchpad-ledger/src/ledger.demo.ts
@@ -1,11 +1,11 @@
 import { toHex, toUtf8 } from "@cosmjs/encoding";
 
-import { LedgerWallet } from "./ledgerwallet";
+import { LedgerSigner } from "./ledgersigner";
 
 declare const window: any;
 declare const document: any;
 
-const ledgerWallet = new LedgerWallet({ testModeAllowed: true });
+const signer = new LedgerSigner({ testModeAllowed: true });
 
 window.getAccounts = async function getAccounts(): Promise<void> {
   const addressInput = document.getElementById("address");
@@ -13,7 +13,7 @@ window.getAccounts = async function getAccounts(): Promise<void> {
   accountsDiv.textContent = "Loading...";
 
   try {
-    const accounts = await ledgerWallet.getAccounts();
+    const accounts = await signer.getAccounts();
     const prettyAccounts = accounts.map((account) => ({ ...account, pubkey: toHex(account.pubkey) }));
     accountsDiv.textContent = JSON.stringify(prettyAccounts, null, "\t");
     addressInput.value = accounts[0].address;
@@ -30,7 +30,7 @@ window.sign = async function sign(): Promise<void> {
     const address = document.getElementById("address").value;
     const rawMessage = document.getElementById("message").textContent;
     const message = JSON.stringify(JSON.parse(rawMessage));
-    const signature = await ledgerWallet.sign(address, toUtf8(message));
+    const signature = await signer.sign(address, toUtf8(message));
     signatureDiv.textContent = JSON.stringify(signature, null, "\t");
   } catch (error) {
     signatureDiv.textContent = error;
diff --git a/packages/launchpad-ledger/src/ledgerwallet.ts b/packages/launchpad-ledger/src/ledgersigner.ts
similarity index 90%
rename from packages/launchpad-ledger/src/ledgerwallet.ts
rename to packages/launchpad-ledger/src/ledgersigner.ts
index 55e0ae13..c0b0b262 100644
--- a/packages/launchpad-ledger/src/ledgerwallet.ts
+++ b/packages/launchpad-ledger/src/ledgersigner.ts
@@ -2,16 +2,16 @@ import { AccountData, encodeSecp256k1Signature, OfflineSigner, StdSignature } fr
 
 import { LaunchpadLedger } from "./launchpadledger";
 
-interface LedgerWalletOptions {
+interface LedgerSignerOptions {
   readonly testModeAllowed: boolean;
 }
 
-export class LedgerWallet implements OfflineSigner {
+export class LedgerSigner implements OfflineSigner {
   private readonly ledger: LaunchpadLedger;
   private address: string | undefined;
   private pubkey: Uint8Array | undefined;
 
-  constructor(options?: LedgerWalletOptions) {
+  constructor(options?: LedgerSignerOptions) {
     this.ledger = new LaunchpadLedger(options);
   }
 
diff --git a/packages/launchpad-ledger/types/index.d.ts b/packages/launchpad-ledger/types/index.d.ts
index f0148827..155dfd14 100644
--- a/packages/launchpad-ledger/types/index.d.ts
+++ b/packages/launchpad-ledger/types/index.d.ts
@@ -1,2 +1,2 @@
 export { LaunchpadLedger } from "./launchpadledger";
-export { LedgerWallet } from "./ledgerwallet";
+export { LedgerSigner } from "./ledgersigner";
diff --git a/packages/launchpad-ledger/types/ledgerwallet.d.ts b/packages/launchpad-ledger/types/ledgersigner.d.ts
similarity index 69%
rename from packages/launchpad-ledger/types/ledgerwallet.d.ts
rename to packages/launchpad-ledger/types/ledgersigner.d.ts
index f47f48b2..1bb54aeb 100644
--- a/packages/launchpad-ledger/types/ledgerwallet.d.ts
+++ b/packages/launchpad-ledger/types/ledgersigner.d.ts
@@ -1,12 +1,12 @@
 import { AccountData, OfflineSigner, StdSignature } from "@cosmjs/launchpad";
-interface LedgerWalletOptions {
+interface LedgerSignerOptions {
   readonly testModeAllowed: boolean;
 }
-export declare class LedgerWallet implements OfflineSigner {
+export declare class LedgerSigner implements OfflineSigner {
   private readonly ledger;
   private address;
   private pubkey;
-  constructor(options?: LedgerWalletOptions);
+  constructor(options?: LedgerSignerOptions);
   getAccounts(): Promise<readonly AccountData[]>;
   sign(address: string, message: Uint8Array): Promise<StdSignature>;
 }

From 738f0b3f65072d808031d090c72ca4f003ddc998 Mon Sep 17 00:00:00 2001
From: willclarktech <willclarktech@users.noreply.github.com>
Date: Tue, 15 Sep 2020 11:02:56 +0200
Subject: [PATCH 21/33] launchpad-ledger: Refactor LedgerSigner options

---
 .../launchpad-ledger/src/launchpadledger.ts   | 21 ++++++++++++++-----
 packages/launchpad-ledger/src/ledgersigner.ts |  8 ++-----
 .../types/launchpadledger.d.ts                | 15 ++++++-------
 .../launchpad-ledger/types/ledgersigner.d.ts  |  7 ++-----
 4 files changed, 26 insertions(+), 25 deletions(-)

diff --git a/packages/launchpad-ledger/src/launchpadledger.ts b/packages/launchpad-ledger/src/launchpadledger.ts
index cf7a75e0..83019811 100644
--- a/packages/launchpad-ledger/src/launchpadledger.ts
+++ b/packages/launchpad-ledger/src/launchpadledger.ts
@@ -66,6 +66,12 @@ function unharden(hdPath: readonly Slip10RawIndex[]): number[] {
 const cosmosHdPath = makeCosmoshubPath(0);
 const cosmosBech32Prefix = "cosmos";
 
+export interface LaunchpadLedgerOptions {
+  readonly hdPath?: readonly Slip10RawIndex[];
+  readonly prefix?: string;
+  readonly testModeAllowed?: boolean;
+}
+
 export class LaunchpadLedger {
   private readonly testModeAllowed: boolean;
   private readonly hdPath: readonly Slip10RawIndex[];
@@ -74,11 +80,16 @@ export class LaunchpadLedger {
   public readonly platform: string;
   public readonly userAgent: string;
 
-  constructor(
-    { testModeAllowed }: { testModeAllowed: boolean } = { testModeAllowed: false },
-    hdPath: readonly Slip10RawIndex[] = cosmosHdPath,
-    prefix: string = cosmosBech32Prefix,
-  ) {
+  constructor(options: LaunchpadLedgerOptions = {}) {
+    const defaultOptions = {
+      hdPath: cosmosHdPath,
+      prefix: cosmosBech32Prefix,
+      testModeAllowed: false,
+    };
+    const { hdPath, prefix, testModeAllowed } = {
+      ...defaultOptions,
+      ...options,
+    };
     this.testModeAllowed = testModeAllowed;
     this.hdPath = hdPath;
     this.prefix = prefix;
diff --git a/packages/launchpad-ledger/src/ledgersigner.ts b/packages/launchpad-ledger/src/ledgersigner.ts
index c0b0b262..145f1ddc 100644
--- a/packages/launchpad-ledger/src/ledgersigner.ts
+++ b/packages/launchpad-ledger/src/ledgersigner.ts
@@ -1,17 +1,13 @@
 import { AccountData, encodeSecp256k1Signature, OfflineSigner, StdSignature } from "@cosmjs/launchpad";
 
-import { LaunchpadLedger } from "./launchpadledger";
-
-interface LedgerSignerOptions {
-  readonly testModeAllowed: boolean;
-}
+import { LaunchpadLedger, LaunchpadLedgerOptions } from "./launchpadledger";
 
 export class LedgerSigner implements OfflineSigner {
   private readonly ledger: LaunchpadLedger;
   private address: string | undefined;
   private pubkey: Uint8Array | undefined;
 
-  constructor(options?: LedgerSignerOptions) {
+  constructor(options?: LaunchpadLedgerOptions) {
     this.ledger = new LaunchpadLedger(options);
   }
 
diff --git a/packages/launchpad-ledger/types/launchpadledger.d.ts b/packages/launchpad-ledger/types/launchpadledger.d.ts
index 4dbf3064..6dcaa64c 100644
--- a/packages/launchpad-ledger/types/launchpadledger.d.ts
+++ b/packages/launchpad-ledger/types/launchpadledger.d.ts
@@ -1,5 +1,10 @@
 /// <reference types="node" />
 import { Slip10RawIndex } from "@cosmjs/crypto";
+export interface LaunchpadLedgerOptions {
+  readonly hdPath?: readonly Slip10RawIndex[];
+  readonly prefix?: string;
+  readonly testModeAllowed?: boolean;
+}
 export declare class LaunchpadLedger {
   private readonly testModeAllowed;
   private readonly hdPath;
@@ -7,15 +12,7 @@ export declare class LaunchpadLedger {
   private cosmosApp;
   readonly platform: string;
   readonly userAgent: string;
-  constructor(
-    {
-      testModeAllowed,
-    }?: {
-      testModeAllowed: boolean;
-    },
-    hdPath?: readonly Slip10RawIndex[],
-    prefix?: string,
-  );
+  constructor(options?: LaunchpadLedgerOptions);
   connect(timeout?: number): Promise<LaunchpadLedger>;
   getCosmosAppVersion(): Promise<string>;
   getPubKey(): Promise<Buffer>;
diff --git a/packages/launchpad-ledger/types/ledgersigner.d.ts b/packages/launchpad-ledger/types/ledgersigner.d.ts
index 1bb54aeb..abf5b3cb 100644
--- a/packages/launchpad-ledger/types/ledgersigner.d.ts
+++ b/packages/launchpad-ledger/types/ledgersigner.d.ts
@@ -1,13 +1,10 @@
 import { AccountData, OfflineSigner, StdSignature } from "@cosmjs/launchpad";
-interface LedgerSignerOptions {
-  readonly testModeAllowed: boolean;
-}
+import { LaunchpadLedgerOptions } from "./launchpadledger";
 export declare class LedgerSigner implements OfflineSigner {
   private readonly ledger;
   private address;
   private pubkey;
-  constructor(options?: LedgerSignerOptions);
+  constructor(options?: LaunchpadLedgerOptions);
   getAccounts(): Promise<readonly AccountData[]>;
   sign(address: string, message: Uint8Array): Promise<StdSignature>;
 }
-export {};

From 2ef93a0b261abfdda0df3fb425aa6dcbb08ecae0 Mon Sep 17 00:00:00 2001
From: willclarktech <willclarktech@users.noreply.github.com>
Date: Tue, 15 Sep 2020 11:18:42 +0200
Subject: [PATCH 22/33] launchpad-ledger: Refactor ledger pubkey/address
 methods

---
 .../launchpad-ledger/src/launchpadledger.ts   | 10 ++++----
 packages/launchpad-ledger/src/ledgersigner.ts | 25 +++++++++++++------
 .../types/launchpadledger.d.ts                |  5 ++--
 3 files changed, 24 insertions(+), 16 deletions(-)

diff --git a/packages/launchpad-ledger/src/launchpadledger.ts b/packages/launchpad-ledger/src/launchpadledger.ts
index 83019811..ea2aa82d 100644
--- a/packages/launchpad-ledger/src/launchpadledger.ts
+++ b/packages/launchpad-ledger/src/launchpadledger.ts
@@ -135,19 +135,19 @@ export class LaunchpadLedger {
     return `${major}.${minor}.${patch}`;
   }
 
-  async getPubKey(): Promise<Buffer> {
+  async getPubkey(): Promise<Uint8Array> {
     await this.connect();
     assert(this.cosmosApp, "Cosmos Ledger App is not connected");
 
     // ledger-cosmos-js hardens the first three indices
     const response = await this.cosmosApp.publicKey(unharden(this.hdPath));
     this.handleLedgerErrors(response);
-    return (response as PublicKeyResponse).compressed_pk;
+    return Uint8Array.from((response as PublicKeyResponse).compressed_pk);
   }
 
-  async getCosmosAddress(): Promise<string> {
-    const pubKey = await this.getPubKey();
-    return CosmosApp.getBech32FromPK(this.prefix, pubKey);
+  async getCosmosAddress(pubkey?: Uint8Array): Promise<string> {
+    const pubkeyToUse = pubkey || (await this.getPubkey());
+    return CosmosApp.getBech32FromPK(this.prefix, Buffer.from(pubkeyToUse));
   }
 
   // async verifyLedgerAddress(): Promise<void> {
diff --git a/packages/launchpad-ledger/src/ledgersigner.ts b/packages/launchpad-ledger/src/ledgersigner.ts
index 145f1ddc..ef6d83d8 100644
--- a/packages/launchpad-ledger/src/ledgersigner.ts
+++ b/packages/launchpad-ledger/src/ledgersigner.ts
@@ -14,14 +14,18 @@ export class LedgerSigner implements OfflineSigner {
   public async getAccounts(): Promise<readonly AccountData[]> {
     await this.ledger.connect();
 
-    const address = (this.address = this.address || (await this.ledger.getCosmosAddress()));
-    const pubkey = (this.pubkey = this.pubkey || (await this.ledger.getPubKey()));
+    if (!this.pubkey) {
+      this.pubkey = await this.ledger.getPubkey();
+    }
+    if (!this.address) {
+      this.address = await this.ledger.getCosmosAddress(this.pubkey);
+    }
 
     return [
       {
         algo: "secp256k1",
-        address: address,
-        pubkey: pubkey,
+        address: this.address,
+        pubkey: this.pubkey,
       },
     ];
   }
@@ -29,13 +33,18 @@ export class LedgerSigner implements OfflineSigner {
   public async sign(address: string, message: Uint8Array): Promise<StdSignature> {
     await this.ledger.connect();
 
-    const thisAddress = (this.address = this.address || (await this.ledger.getCosmosAddress()));
-    if (address !== thisAddress) {
+    if (!this.pubkey) {
+      this.pubkey = await this.ledger.getPubkey();
+    }
+    if (!this.address) {
+      this.address = await this.ledger.getCosmosAddress(this.pubkey);
+    }
+
+    if (address !== this.address) {
       throw new Error(`Address ${address} not found in wallet`);
     }
 
     const signature = await this.ledger.sign(message);
-    const pubkey = (this.pubkey = this.pubkey || (await this.ledger.getPubKey()));
-    return encodeSecp256k1Signature(pubkey, signature);
+    return encodeSecp256k1Signature(this.pubkey, signature);
   }
 }
diff --git a/packages/launchpad-ledger/types/launchpadledger.d.ts b/packages/launchpad-ledger/types/launchpadledger.d.ts
index 6dcaa64c..b4f01c24 100644
--- a/packages/launchpad-ledger/types/launchpadledger.d.ts
+++ b/packages/launchpad-ledger/types/launchpadledger.d.ts
@@ -1,4 +1,3 @@
-/// <reference types="node" />
 import { Slip10RawIndex } from "@cosmjs/crypto";
 export interface LaunchpadLedgerOptions {
   readonly hdPath?: readonly Slip10RawIndex[];
@@ -15,8 +14,8 @@ export declare class LaunchpadLedger {
   constructor(options?: LaunchpadLedgerOptions);
   connect(timeout?: number): Promise<LaunchpadLedger>;
   getCosmosAppVersion(): Promise<string>;
-  getPubKey(): Promise<Buffer>;
-  getCosmosAddress(): Promise<string>;
+  getPubkey(): Promise<Uint8Array>;
+  getCosmosAddress(pubkey?: Uint8Array): Promise<string>;
   sign(message: Uint8Array): Promise<Uint8Array>;
   private verifyAppMode;
   private getOpenAppName;

From 4b9b40f69b4890f29cabbe678b423651db8afa3c Mon Sep 17 00:00:00 2001
From: willclarktech <willclarktech@users.noreply.github.com>
Date: Tue, 15 Sep 2020 11:33:20 +0200
Subject: [PATCH 23/33] launchpad-ledger: Refactor demo structure

---
 packages/launchpad-ledger/{ledger-demo.css => demo/index.css} | 0
 .../launchpad-ledger/{ledger-demo.html => demo/index.html}    | 4 ++--
 packages/launchpad-ledger/package.json                        | 2 +-
 .../launchpad-ledger/src/{ledger.demo.ts => demo/index.ts}    | 2 +-
 packages/launchpad-ledger/webpack.web.config.js               | 2 +-
 5 files changed, 5 insertions(+), 5 deletions(-)
 rename packages/launchpad-ledger/{ledger-demo.css => demo/index.css} (100%)
 rename packages/launchpad-ledger/{ledger-demo.html => demo/index.html} (91%)
 rename packages/launchpad-ledger/src/{ledger.demo.ts => demo/index.ts} (96%)

diff --git a/packages/launchpad-ledger/ledger-demo.css b/packages/launchpad-ledger/demo/index.css
similarity index 100%
rename from packages/launchpad-ledger/ledger-demo.css
rename to packages/launchpad-ledger/demo/index.css
diff --git a/packages/launchpad-ledger/ledger-demo.html b/packages/launchpad-ledger/demo/index.html
similarity index 91%
rename from packages/launchpad-ledger/ledger-demo.html
rename to packages/launchpad-ledger/demo/index.html
index ecff0065..5b9f4c1b 100644
--- a/packages/launchpad-ledger/ledger-demo.html
+++ b/packages/launchpad-ledger/demo/index.html
@@ -4,8 +4,8 @@
     <meta charset="UTF-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
     <title>Ledger Demo</title>
-    <link rel="stylesheet" href="ledger-demo.css"></style>
-    <script src="dist/demo/ledger.js"></script>
+    <link rel="stylesheet" href="index.css"></style>
+    <script src="../dist/demo/ledger.js"></script>
   </head>
   <body>
     <div>
diff --git a/packages/launchpad-ledger/package.json b/packages/launchpad-ledger/package.json
index 20720c62..fb08196c 100644
--- a/packages/launchpad-ledger/package.json
+++ b/packages/launchpad-ledger/package.json
@@ -28,7 +28,7 @@
     "format-text": "prettier --write --prose-wrap always --print-width 80 \"./*.md\"",
     "lint": "eslint --max-warnings 0 \"**/*.{js,ts}\"",
     "lint-fix": "eslint --max-warnings 0 \"**/*.{js,ts}\" --fix",
-    "move-types": "shx rm -rf ./types/* && shx mv build/types/* ./types && rm -rf ./types/testdata && shx rm -f ./types/*.demo.d.ts",
+    "move-types": "shx rm -rf ./types/* && shx mv build/types/* ./types && rm -rf ./types/testdata && shx rm -rf ./types/demo",
     "format-types": "prettier --write --loglevel warn \"./types/**/*.d.ts\"",
     "prebuild": "shx rm -rf ./build",
     "build": "tsc",
diff --git a/packages/launchpad-ledger/src/ledger.demo.ts b/packages/launchpad-ledger/src/demo/index.ts
similarity index 96%
rename from packages/launchpad-ledger/src/ledger.demo.ts
rename to packages/launchpad-ledger/src/demo/index.ts
index 46a9259e..820a0105 100644
--- a/packages/launchpad-ledger/src/ledger.demo.ts
+++ b/packages/launchpad-ledger/src/demo/index.ts
@@ -1,6 +1,6 @@
 import { toHex, toUtf8 } from "@cosmjs/encoding";
 
-import { LedgerSigner } from "./ledgersigner";
+import { LedgerSigner } from "../ledgersigner";
 
 declare const window: any;
 declare const document: any;
diff --git a/packages/launchpad-ledger/webpack.web.config.js b/packages/launchpad-ledger/webpack.web.config.js
index fe7d59e8..8f6d7e36 100644
--- a/packages/launchpad-ledger/webpack.web.config.js
+++ b/packages/launchpad-ledger/webpack.web.config.js
@@ -20,7 +20,7 @@ module.exports = [
   {
     // bundle used for Ledger demo
     target: target,
-    entry: glob.sync("./build/**/*.demo.js"),
+    entry: glob.sync("./build/demo/index.js"),
     output: {
       path: demodir,
       filename: "ledger.js",

From e89c45663488b03a6b9e1502bf027bcaff4a94cd Mon Sep 17 00:00:00 2001
From: willclarktech <willclarktech@users.noreply.github.com>
Date: Tue, 15 Sep 2020 11:51:17 +0200
Subject: [PATCH 24/33] launchpad-ledger: Add MsgSend to demo

---
 packages/launchpad-ledger/demo/index.css    |  2 +-
 packages/launchpad-ledger/demo/index.html   | 11 --------
 packages/launchpad-ledger/src/demo/index.ts | 29 ++++++++++++++++++++-
 3 files changed, 29 insertions(+), 13 deletions(-)

diff --git a/packages/launchpad-ledger/demo/index.css b/packages/launchpad-ledger/demo/index.css
index 4cc56f58..974bced3 100644
--- a/packages/launchpad-ledger/demo/index.css
+++ b/packages/launchpad-ledger/demo/index.css
@@ -20,5 +20,5 @@ input {
 
 textarea {
   width: 32em;
-  height: 14em;
+  height: 28em;
 }
diff --git a/packages/launchpad-ledger/demo/index.html b/packages/launchpad-ledger/demo/index.html
index 5b9f4c1b..1575c6bd 100644
--- a/packages/launchpad-ledger/demo/index.html
+++ b/packages/launchpad-ledger/demo/index.html
@@ -31,17 +31,6 @@
     <div>
       <label>Message</label>
       <textarea id="message">
-{
-  "account_number": 0,
-  "chain_id": "testing",
-  "fee": {
-    "amount": [{ "amount": 100, "denom": "ucosm" }],
-    "gas": 250
-  },
-  "memo": "Some memo",
-  "msgs": [],
-  "sequence": 0
-}
       </textarea>
     </div>
     <div>
diff --git a/packages/launchpad-ledger/src/demo/index.ts b/packages/launchpad-ledger/src/demo/index.ts
index 820a0105..8269c3a3 100644
--- a/packages/launchpad-ledger/src/demo/index.ts
+++ b/packages/launchpad-ledger/src/demo/index.ts
@@ -5,18 +5,45 @@ import { LedgerSigner } from "../ledgersigner";
 declare const window: any;
 declare const document: any;
 
+function createMessage(address: string): string {
+  return `{
+    "account_number": 0,
+    "chain_id": "testing",
+    "fee": {
+      "amount": [{ "amount": 100, "denom": "ucosm" }],
+      "gas": 250
+    },
+    "memo": "Some memo",
+    "msgs": [{
+      "type": "cosmos-sdk/MsgSend",
+      "value": {
+        "amount": [{
+          "amount": "1234567",
+          "denom": "ucosm"
+        }],
+        "from_address": "${address}",
+        "to_address": "${address}"
+      }
+    }],
+    "sequence": 0
+  }`;
+}
+
 const signer = new LedgerSigner({ testModeAllowed: true });
 
 window.getAccounts = async function getAccounts(): Promise<void> {
   const addressInput = document.getElementById("address");
   const accountsDiv = document.getElementById("accounts");
+  const messageTextArea = document.getElementById("message");
   accountsDiv.textContent = "Loading...";
 
   try {
     const accounts = await signer.getAccounts();
     const prettyAccounts = accounts.map((account) => ({ ...account, pubkey: toHex(account.pubkey) }));
     accountsDiv.textContent = JSON.stringify(prettyAccounts, null, "\t");
-    addressInput.value = accounts[0].address;
+    const address = accounts[0].address;
+    addressInput.value = address;
+    messageTextArea.textContent = createMessage(address);
   } catch (error) {
     accountsDiv.textContent = error;
   }

From bf97908592fea1a21e8129c305eb1dddf7c77ba4 Mon Sep 17 00:00:00 2001
From: willclarktech <willclarktech@users.noreply.github.com>
Date: Tue, 15 Sep 2020 12:27:46 +0200
Subject: [PATCH 25/33] launchpad-ledger: Add demo instructions to README

---
 packages/launchpad-ledger/README.md | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/packages/launchpad-ledger/README.md b/packages/launchpad-ledger/README.md
index 9b547645..4cd9ca24 100644
--- a/packages/launchpad-ledger/README.md
+++ b/packages/launchpad-ledger/README.md
@@ -2,6 +2,33 @@
 
 [![npm version](https://img.shields.io/npm/v/@cosmjs/launchpad-ledger.svg)](https://www.npmjs.com/package/@cosmjs/launchpad-ledger)
 
+## Supported platforms
+
+We use the
+[@ledgerhq/hw-transport-webusb](https://github.com/LedgerHQ/ledgerjs/tree/master/packages/hw-transport-webusb)
+library to connect to Ledger devices from the browser via USB. You can check the
+support status of this library
+[here](https://github.com/LedgerHQ/ledgerjs/tree/master/packages/hw-transport-webusb#support-status).
+
+## Running the demo
+
+Build the package for web:
+
+```sh
+yarn pack-web
+```
+
+Host the `launchpad-ledger` package directory, for example using Python 3:
+
+```sh
+python3 -m http.server
+```
+
+Visit the demo page in a browser, for example if using the Python 3 option:
+[http://localhost:8000/demo]().
+
+Then follow the instructions on that page.
+
 ## License
 
 This package is part of the cosmjs repository, licensed under the Apache License

From f3f691d134ce3214c551bd1f8ee4cd1afebea455 Mon Sep 17 00:00:00 2001
From: willclarktech <willclarktech@users.noreply.github.com>
Date: Tue, 15 Sep 2020 12:28:02 +0200
Subject: [PATCH 26/33] launchpad-ledger: Tidy auxiliary files

---
 packages/launchpad-ledger/.nycrc.yml          |  1 -
 .../launchpad-ledger/jasmine-testrunner.js    | 33 -------------
 packages/launchpad-ledger/karma.conf.js       | 47 -------------------
 packages/launchpad-ledger/package.json        |  7 +--
 packages/launchpad-ledger/typedoc.js          |  2 +-
 .../launchpad-ledger/webpack.demo.config.js   | 17 +++++++
 .../launchpad-ledger/webpack.web.config.js    | 29 ------------
 7 files changed, 20 insertions(+), 116 deletions(-)
 delete mode 120000 packages/launchpad-ledger/.nycrc.yml
 delete mode 100755 packages/launchpad-ledger/jasmine-testrunner.js
 delete mode 100644 packages/launchpad-ledger/karma.conf.js
 create mode 100644 packages/launchpad-ledger/webpack.demo.config.js
 delete mode 100644 packages/launchpad-ledger/webpack.web.config.js

diff --git a/packages/launchpad-ledger/.nycrc.yml b/packages/launchpad-ledger/.nycrc.yml
deleted file mode 120000
index 1f95ac55..00000000
--- a/packages/launchpad-ledger/.nycrc.yml
+++ /dev/null
@@ -1 +0,0 @@
-../../.nycrc.yml
\ No newline at end of file
diff --git a/packages/launchpad-ledger/jasmine-testrunner.js b/packages/launchpad-ledger/jasmine-testrunner.js
deleted file mode 100755
index 7a17962e..00000000
--- a/packages/launchpad-ledger/jasmine-testrunner.js
+++ /dev/null
@@ -1,33 +0,0 @@
-#!/usr/bin/env node
-
-/* eslint-disable @typescript-eslint/naming-convention */
-require("source-map-support").install();
-const defaultSpecReporterConfig = require("../../jasmine-spec-reporter.config.json");
-
-// setup Jasmine
-const Jasmine = require("jasmine");
-const jasmine = new Jasmine();
-jasmine.loadConfig({
-  spec_dir: "build",
-  spec_files: ["**/*.spec.js"],
-  helpers: [],
-  random: false,
-  seed: null,
-  stopSpecOnExpectationFailure: false,
-});
-jasmine.jasmine.DEFAULT_TIMEOUT_INTERVAL = 15 * 1000;
-
-// setup reporter
-const { SpecReporter } = require("jasmine-spec-reporter");
-const reporter = new SpecReporter({
-  ...defaultSpecReporterConfig,
-  spec: {
-    ...defaultSpecReporterConfig.spec,
-    displaySuccessful: !process.argv.includes("--quiet"),
-  },
-});
-
-// initialize and execute
-jasmine.env.clearReporters();
-jasmine.addReporter(reporter);
-jasmine.execute();
diff --git a/packages/launchpad-ledger/karma.conf.js b/packages/launchpad-ledger/karma.conf.js
deleted file mode 100644
index 006da5fe..00000000
--- a/packages/launchpad-ledger/karma.conf.js
+++ /dev/null
@@ -1,47 +0,0 @@
-module.exports = function (config) {
-  config.set({
-    // base path that will be used to resolve all patterns (eg. files, exclude)
-    basePath: ".",
-
-    // frameworks to use
-    // available frameworks: https://npmjs.org/browse/keyword/karma-adapter
-    frameworks: ["jasmine"],
-
-    // list of files / patterns to load in the browser
-    files: ["dist/web/tests.js"],
-
-    client: {
-      jasmine: {
-        random: false,
-        timeoutInterval: 15000,
-      },
-    },
-
-    // test results reporter to use
-    // possible values: 'dots', 'progress'
-    // available reporters: https://npmjs.org/browse/keyword/karma-reporter
-    reporters: ["progress", "kjhtml"],
-
-    // web server port
-    port: 9876,
-
-    // enable / disable colors in the output (reporters and logs)
-    colors: true,
-
-    // level of logging
-    // possible values: config.LOG_DISABLE || config.LOG_ERROR || config.LOG_WARN || config.LOG_INFO || config.LOG_DEBUG
-    logLevel: config.LOG_INFO,
-
-    // enable / disable watching file and executing tests whenever any file changes
-    autoWatch: false,
-
-    // start these browsers
-    // available browser launchers: https://npmjs.org/browse/keyword/karma-launcher
-    browsers: ["Firefox"],
-
-    browserNoActivityTimeout: 90000,
-
-    // Keep brower open for debugging. This is overridden by yarn scripts
-    singleRun: false,
-  });
-};
diff --git a/packages/launchpad-ledger/package.json b/packages/launchpad-ledger/package.json
index fb08196c..0fdc2129 100644
--- a/packages/launchpad-ledger/package.json
+++ b/packages/launchpad-ledger/package.json
@@ -34,12 +34,9 @@
     "build": "tsc",
     "postbuild": "yarn move-types && yarn format-types",
     "build-or-skip": "[ -n \"$SKIP_BUILD\" ] || yarn build",
-    "test-node": "node jasmine-testrunner.js",
-    "test-firefox": "yarn pack-web && karma start --single-run --browsers Firefox",
-    "test-chrome": "yarn pack-web && karma start --single-run --browsers ChromeHeadless",
-    "test": "yarn build-or-skip && yarn test-node",
+    "test": "echo 'Please check README for information on how to manually run the demo'",
     "coverage": "nyc --reporter=text --reporter=lcov yarn test --quiet",
-    "pack-web": "yarn build-or-skip && webpack --mode development --config webpack.web.config.js"
+    "pack-web": "yarn build-or-skip && webpack --mode development --config webpack.demo.config.js"
   },
   "dependencies": {
     "@cosmjs/launchpad": "^0.22.2",
diff --git a/packages/launchpad-ledger/typedoc.js b/packages/launchpad-ledger/typedoc.js
index 4dfbe49d..3b3d649e 100644
--- a/packages/launchpad-ledger/typedoc.js
+++ b/packages/launchpad-ledger/typedoc.js
@@ -3,7 +3,7 @@ const packageJson = require("./package.json");
 module.exports = {
   inputFiles: ["./src"],
   out: "docs",
-  exclude: "**/*.spec.ts",
+  exclude: ["**/*.spec.ts", "./src/demo"],
   name: `${packageJson.name} Documentation`,
   readme: "README.md",
   mode: "file",
diff --git a/packages/launchpad-ledger/webpack.demo.config.js b/packages/launchpad-ledger/webpack.demo.config.js
new file mode 100644
index 00000000..e16bea23
--- /dev/null
+++ b/packages/launchpad-ledger/webpack.demo.config.js
@@ -0,0 +1,17 @@
+const glob = require("glob");
+const path = require("path");
+
+const target = "web";
+const demodir = path.join(__dirname, "dist", "demo");
+
+module.exports = [
+  {
+    // bundle used for Ledger demo
+    target: target,
+    entry: glob.sync("./build/demo/index.js"),
+    output: {
+      path: demodir,
+      filename: "ledger.js",
+    },
+  },
+];
diff --git a/packages/launchpad-ledger/webpack.web.config.js b/packages/launchpad-ledger/webpack.web.config.js
deleted file mode 100644
index 8f6d7e36..00000000
--- a/packages/launchpad-ledger/webpack.web.config.js
+++ /dev/null
@@ -1,29 +0,0 @@
-const glob = require("glob");
-const path = require("path");
-// const webpack = require("webpack");
-
-const target = "web";
-// const distdir = path.join(__dirname, "dist", "web");
-const demodir = path.join(__dirname, "dist", "demo");
-
-module.exports = [
-  // {
-  //   // bundle used for Karma tests
-  //   target: target,
-  //   entry: glob.sync("./build/**/*.spec.js"),
-  //   output: {
-  //     path: distdir,
-  //     filename: "tests.js",
-  //   },
-  //   plugins: [new webpack.EnvironmentPlugin(["WASMD_ENABLED"])],
-  // },
-  {
-    // bundle used for Ledger demo
-    target: target,
-    entry: glob.sync("./build/demo/index.js"),
-    output: {
-      path: demodir,
-      filename: "ledger.js",
-    },
-  },
-];

From 74141806074006a7150c7c15b8dc077f9e7b4dce Mon Sep 17 00:00:00 2001
From: willclarktech <willclarktech@users.noreply.github.com>
Date: Tue, 15 Sep 2020 12:48:13 +0200
Subject: [PATCH 27/33] launchpad-ledger: Remove unused commented code

---
 .../launchpad-ledger/src/launchpadledger.ts   | 20 -------------------
 1 file changed, 20 deletions(-)

diff --git a/packages/launchpad-ledger/src/launchpadledger.ts b/packages/launchpad-ledger/src/launchpadledger.ts
index ea2aa82d..6b078d0f 100644
--- a/packages/launchpad-ledger/src/launchpadledger.ts
+++ b/packages/launchpad-ledger/src/launchpadledger.ts
@@ -98,16 +98,6 @@ export class LaunchpadLedger {
     this.userAgent = navigator.userAgent;
   }
 
-  // // quickly test connection and compatibility with the LaunchpadLedger device throwing away the connection
-  // async testDevice(): Promise<LaunchpadLedger> {
-  //   // poll device with low timeout to check if the device is connected
-  //   const secondsTimeout = 3; // a lower value always timeouts
-  //   await this.connect(secondsTimeout);
-  //   this.cosmosApp = null;
-
-  //   return this;
-  // }
-
   async connect(timeout = defaultInteractionTimeout): Promise<LaunchpadLedger> {
     // assume good connection if connected once
     if (this.cosmosApp) {
@@ -150,16 +140,6 @@ export class LaunchpadLedger {
     return CosmosApp.getBech32FromPK(this.prefix, Buffer.from(pubkeyToUse));
   }
 
-  // async verifyLedgerAddress(): Promise<void> {
-  //   await this.connect();
-  //   assert(this.cosmosApp, "Cosmos Ledger App is not connected");
-
-  //   const response = await this.cosmosApp.showAddressAndPubKey(this.hdPath, this.bech32Prefix);
-  //   this.handleLedgerErrors(response, {
-  //     rejectionMessage: "Displayed address was rejected by the user",
-  //   });
-  // }
-
   async sign(message: Uint8Array): Promise<Uint8Array> {
     await this.connect();
     assert(this.cosmosApp, "Cosmos Ledger App is not connected");

From cb19a54233086c30369c27d103ae2107dafb20c0 Mon Sep 17 00:00:00 2001
From: willclarktech <willclarktech@users.noreply.github.com>
Date: Tue, 15 Sep 2020 13:31:20 +0200
Subject: [PATCH 28/33] crypto: Add HdPath type alias

---
 packages/crypto/src/index.ts       |  1 +
 packages/crypto/src/slip10.spec.ts | 56 +++++++++++++-----------------
 packages/crypto/src/slip10.ts      | 12 +++----
 packages/crypto/types/index.d.ts   |  1 +
 packages/crypto/types/slip10.d.ts  |  7 ++--
 5 files changed, 36 insertions(+), 41 deletions(-)

diff --git a/packages/crypto/src/index.ts b/packages/crypto/src/index.ts
index 925865b3..bd19288f 100644
--- a/packages/crypto/src/index.ts
+++ b/packages/crypto/src/index.ts
@@ -18,6 +18,7 @@ export { Secp256k1, Secp256k1Keypair } from "./secp256k1";
 export { ExtendedSecp256k1Signature, Secp256k1Signature } from "./secp256k1signature";
 export { Sha1, Sha256, Sha512 } from "./sha";
 export {
+  HdPath,
   pathToString,
   stringToPath,
   Slip10,
diff --git a/packages/crypto/src/slip10.spec.ts b/packages/crypto/src/slip10.spec.ts
index 52718df8..7dc72565 100644
--- a/packages/crypto/src/slip10.spec.ts
+++ b/packages/crypto/src/slip10.spec.ts
@@ -1,6 +1,7 @@
 import { fromHex } from "@cosmjs/encoding";
 
 import {
+  HdPath,
   pathToString,
   Slip10,
   Slip10Curve,
@@ -22,7 +23,7 @@ describe("Slip10", () => {
     const seed = fromHex("000102030405060708090a0b0c0d0e0f");
 
     it("can derive path m", () => {
-      const path: readonly Slip10RawIndex[] = [];
+      const path: HdPath = [];
       const derived = Slip10.derivePath(Slip10Curve.Secp256k1, seed, path);
       expect(derived.chainCode).toEqual(
         fromHex("873dff81c02f525623fd1fe5167eac3a55a049de3d314bb42ee227ffed37d508"),
@@ -33,7 +34,7 @@ describe("Slip10", () => {
     });
 
     it("can derive path m/0'", () => {
-      const path: readonly Slip10RawIndex[] = [Slip10RawIndex.hardened(0)];
+      const path: HdPath = [Slip10RawIndex.hardened(0)];
       const derived = Slip10.derivePath(Slip10Curve.Secp256k1, seed, path);
       expect(derived.chainCode).toEqual(
         fromHex("47fdacbd0f1097043b78c63c20c34ef4ed9a111d980047ad16282c7ae6236141"),
@@ -44,7 +45,7 @@ describe("Slip10", () => {
     });
 
     it("can derive path m/0'/1", () => {
-      const path: readonly Slip10RawIndex[] = [Slip10RawIndex.hardened(0), Slip10RawIndex.normal(1)];
+      const path: HdPath = [Slip10RawIndex.hardened(0), Slip10RawIndex.normal(1)];
       const derived = Slip10.derivePath(Slip10Curve.Secp256k1, seed, path);
       expect(derived.chainCode).toEqual(
         fromHex("2a7857631386ba23dacac34180dd1983734e444fdbf774041578e9b6adb37c19"),
@@ -55,11 +56,7 @@ describe("Slip10", () => {
     });
 
     it("can derive path m/0'/1/2'", () => {
-      const path: readonly Slip10RawIndex[] = [
-        Slip10RawIndex.hardened(0),
-        Slip10RawIndex.normal(1),
-        Slip10RawIndex.hardened(2),
-      ];
+      const path: HdPath = [Slip10RawIndex.hardened(0), Slip10RawIndex.normal(1), Slip10RawIndex.hardened(2)];
       const derived = Slip10.derivePath(Slip10Curve.Secp256k1, seed, path);
       expect(derived.chainCode).toEqual(
         fromHex("04466b9cc8e161e966409ca52986c584f07e9dc81f735db683c3ff6ec7b1503f"),
@@ -70,7 +67,7 @@ describe("Slip10", () => {
     });
 
     it("can derive path m/0'/1/2'/2", () => {
-      const path: readonly Slip10RawIndex[] = [
+      const path: HdPath = [
         Slip10RawIndex.hardened(0),
         Slip10RawIndex.normal(1),
         Slip10RawIndex.hardened(2),
@@ -86,7 +83,7 @@ describe("Slip10", () => {
     });
 
     it("can derive path m/0'/1/2'/2/1000000000", () => {
-      const path: readonly Slip10RawIndex[] = [
+      const path: HdPath = [
         Slip10RawIndex.hardened(0),
         Slip10RawIndex.normal(1),
         Slip10RawIndex.hardened(2),
@@ -110,7 +107,7 @@ describe("Slip10", () => {
     );
 
     it("can derive path m", () => {
-      const path: readonly Slip10RawIndex[] = [];
+      const path: HdPath = [];
       const derived = Slip10.derivePath(Slip10Curve.Secp256k1, seed, path);
       expect(derived.chainCode).toEqual(
         fromHex("60499f801b896d83179a4374aeb7822aaeaceaa0db1f85ee3e904c4defbd9689"),
@@ -121,7 +118,7 @@ describe("Slip10", () => {
     });
 
     it("can derive path m/0", () => {
-      const path: readonly Slip10RawIndex[] = [Slip10RawIndex.normal(0)];
+      const path: HdPath = [Slip10RawIndex.normal(0)];
       const derived = Slip10.derivePath(Slip10Curve.Secp256k1, seed, path);
       expect(derived.chainCode).toEqual(
         fromHex("f0909affaa7ee7abe5dd4e100598d4dc53cd709d5a5c2cac40e7412f232f7c9c"),
@@ -132,7 +129,7 @@ describe("Slip10", () => {
     });
 
     it("can derive path m/0/2147483647'", () => {
-      const path: readonly Slip10RawIndex[] = [Slip10RawIndex.normal(0), Slip10RawIndex.hardened(2147483647)];
+      const path: HdPath = [Slip10RawIndex.normal(0), Slip10RawIndex.hardened(2147483647)];
       const derived = Slip10.derivePath(Slip10Curve.Secp256k1, seed, path);
       expect(derived.chainCode).toEqual(
         fromHex("be17a268474a6bb9c61e1d720cf6215e2a88c5406c4aee7b38547f585c9a37d9"),
@@ -143,7 +140,7 @@ describe("Slip10", () => {
     });
 
     it("can derive path m/0/2147483647'/1", () => {
-      const path: readonly Slip10RawIndex[] = [
+      const path: HdPath = [
         Slip10RawIndex.normal(0),
         Slip10RawIndex.hardened(2147483647),
         Slip10RawIndex.normal(1),
@@ -158,7 +155,7 @@ describe("Slip10", () => {
     });
 
     it("can derive path m/0/2147483647'/1/2147483646'", () => {
-      const path: readonly Slip10RawIndex[] = [
+      const path: HdPath = [
         Slip10RawIndex.normal(0),
         Slip10RawIndex.hardened(2147483647),
         Slip10RawIndex.normal(1),
@@ -174,7 +171,7 @@ describe("Slip10", () => {
     });
 
     it("can derive path m/0/2147483647'/1/2147483646'/2", () => {
-      const path: readonly Slip10RawIndex[] = [
+      const path: HdPath = [
         Slip10RawIndex.normal(0),
         Slip10RawIndex.hardened(2147483647),
         Slip10RawIndex.normal(1),
@@ -196,7 +193,7 @@ describe("Slip10", () => {
     const seed = fromHex("000102030405060708090a0b0c0d0e0f");
 
     it("can derive path m", () => {
-      const path: readonly Slip10RawIndex[] = [];
+      const path: HdPath = [];
       const derived = Slip10.derivePath(Slip10Curve.Ed25519, seed, path);
       expect(derived.chainCode).toEqual(
         fromHex("90046a93de5380a72b5e45010748567d5ea02bbf6522f979e05c0d8d8ca9fffb"),
@@ -207,7 +204,7 @@ describe("Slip10", () => {
     });
 
     it("can derive path m/0'", () => {
-      const path: readonly Slip10RawIndex[] = [Slip10RawIndex.hardened(0)];
+      const path: HdPath = [Slip10RawIndex.hardened(0)];
       const derived = Slip10.derivePath(Slip10Curve.Ed25519, seed, path);
       expect(derived.chainCode).toEqual(
         fromHex("8b59aa11380b624e81507a27fedda59fea6d0b779a778918a2fd3590e16e9c69"),
@@ -218,7 +215,7 @@ describe("Slip10", () => {
     });
 
     it("can derive path m/0'/1'", () => {
-      const path: readonly Slip10RawIndex[] = [Slip10RawIndex.hardened(0), Slip10RawIndex.hardened(1)];
+      const path: HdPath = [Slip10RawIndex.hardened(0), Slip10RawIndex.hardened(1)];
       const derived = Slip10.derivePath(Slip10Curve.Ed25519, seed, path);
       expect(derived.chainCode).toEqual(
         fromHex("a320425f77d1b5c2505a6b1b27382b37368ee640e3557c315416801243552f14"),
@@ -229,7 +226,7 @@ describe("Slip10", () => {
     });
 
     it("can derive path m/0'/1'/2'", () => {
-      const path: readonly Slip10RawIndex[] = [
+      const path: HdPath = [
         Slip10RawIndex.hardened(0),
         Slip10RawIndex.hardened(1),
         Slip10RawIndex.hardened(2),
@@ -244,7 +241,7 @@ describe("Slip10", () => {
     });
 
     it("can derive path m/0'/1'/2'/2'", () => {
-      const path: readonly Slip10RawIndex[] = [
+      const path: HdPath = [
         Slip10RawIndex.hardened(0),
         Slip10RawIndex.hardened(1),
         Slip10RawIndex.hardened(2),
@@ -260,7 +257,7 @@ describe("Slip10", () => {
     });
 
     it("can derive path m/0'/1'/2'/2'/1000000000'", () => {
-      const path: readonly Slip10RawIndex[] = [
+      const path: HdPath = [
         Slip10RawIndex.hardened(0),
         Slip10RawIndex.hardened(1),
         Slip10RawIndex.hardened(2),
@@ -284,7 +281,7 @@ describe("Slip10", () => {
     );
 
     it("can derive path m", () => {
-      const path: readonly Slip10RawIndex[] = [];
+      const path: HdPath = [];
       const derived = Slip10.derivePath(Slip10Curve.Ed25519, seed, path);
       expect(derived.chainCode).toEqual(
         fromHex("ef70a74db9c3a5af931b5fe73ed8e1a53464133654fd55e7a66f8570b8e33c3b"),
@@ -295,7 +292,7 @@ describe("Slip10", () => {
     });
 
     it("can derive path m/0'", () => {
-      const path: readonly Slip10RawIndex[] = [Slip10RawIndex.hardened(0)];
+      const path: HdPath = [Slip10RawIndex.hardened(0)];
       const derived = Slip10.derivePath(Slip10Curve.Ed25519, seed, path);
       expect(derived.chainCode).toEqual(
         fromHex("0b78a3226f915c082bf118f83618a618ab6dec793752624cbeb622acb562862d"),
@@ -306,10 +303,7 @@ describe("Slip10", () => {
     });
 
     it("can derive path m/0'/2147483647'", () => {
-      const path: readonly Slip10RawIndex[] = [
-        Slip10RawIndex.hardened(0),
-        Slip10RawIndex.hardened(2147483647),
-      ];
+      const path: HdPath = [Slip10RawIndex.hardened(0), Slip10RawIndex.hardened(2147483647)];
       const derived = Slip10.derivePath(Slip10Curve.Ed25519, seed, path);
       expect(derived.chainCode).toEqual(
         fromHex("138f0b2551bcafeca6ff2aa88ba8ed0ed8de070841f0c4ef0165df8181eaad7f"),
@@ -320,7 +314,7 @@ describe("Slip10", () => {
     });
 
     it("can derive path m/0'/2147483647'/1'", () => {
-      const path: readonly Slip10RawIndex[] = [
+      const path: HdPath = [
         Slip10RawIndex.hardened(0),
         Slip10RawIndex.hardened(2147483647),
         Slip10RawIndex.hardened(1),
@@ -335,7 +329,7 @@ describe("Slip10", () => {
     });
 
     it("can derive path m/0'/2147483647'/1'/2147483646'", () => {
-      const path: readonly Slip10RawIndex[] = [
+      const path: HdPath = [
         Slip10RawIndex.hardened(0),
         Slip10RawIndex.hardened(2147483647),
         Slip10RawIndex.hardened(1),
@@ -351,7 +345,7 @@ describe("Slip10", () => {
     });
 
     it("can derive path m/0'/2147483647'/1'/2147483646'/2'", () => {
-      const path: readonly Slip10RawIndex[] = [
+      const path: HdPath = [
         Slip10RawIndex.hardened(0),
         Slip10RawIndex.hardened(2147483647),
         Slip10RawIndex.hardened(1),
diff --git a/packages/crypto/src/slip10.ts b/packages/crypto/src/slip10.ts
index 9f507954..39a0bd8a 100644
--- a/packages/crypto/src/slip10.ts
+++ b/packages/crypto/src/slip10.ts
@@ -49,16 +49,14 @@ export class Slip10RawIndex extends Uint32 {
   }
 }
 
+export type HdPath = readonly Slip10RawIndex[];
+
 const secp256k1 = new elliptic.ec("secp256k1");
 
 // Universal private key derivation accoring to
 // https://github.com/satoshilabs/slips/blob/master/slip-0010.md
 export class Slip10 {
-  public static derivePath(
-    curve: Slip10Curve,
-    seed: Uint8Array,
-    path: readonly Slip10RawIndex[],
-  ): Slip10Result {
+  public static derivePath(curve: Slip10Curve, seed: Uint8Array, path: HdPath): Slip10Result {
     let result = this.master(curve, seed);
     for (const rawIndex of path) {
       result = this.child(curve, result.privkey, result.chainCode, rawIndex);
@@ -185,7 +183,7 @@ export class Slip10 {
   }
 }
 
-export function pathToString(path: readonly Slip10RawIndex[]): string {
+export function pathToString(path: HdPath): string {
   return path.reduce((current, component): string => {
     const componentString = component.isHardened()
       ? `${component.toNumber() - 2 ** 31}'`
@@ -194,7 +192,7 @@ export function pathToString(path: readonly Slip10RawIndex[]): string {
   }, "m");
 }
 
-export function stringToPath(input: string): readonly Slip10RawIndex[] {
+export function stringToPath(input: string): HdPath {
   if (!input.startsWith("m")) throw new Error("Path string must start with 'm'");
   let rest = input.slice(1);
 
diff --git a/packages/crypto/types/index.d.ts b/packages/crypto/types/index.d.ts
index 925865b3..bd19288f 100644
--- a/packages/crypto/types/index.d.ts
+++ b/packages/crypto/types/index.d.ts
@@ -18,6 +18,7 @@ export { Secp256k1, Secp256k1Keypair } from "./secp256k1";
 export { ExtendedSecp256k1Signature, Secp256k1Signature } from "./secp256k1signature";
 export { Sha1, Sha256, Sha512 } from "./sha";
 export {
+  HdPath,
   pathToString,
   stringToPath,
   Slip10,
diff --git a/packages/crypto/types/slip10.d.ts b/packages/crypto/types/slip10.d.ts
index ffd92295..cd90a65f 100644
--- a/packages/crypto/types/slip10.d.ts
+++ b/packages/crypto/types/slip10.d.ts
@@ -21,8 +21,9 @@ export declare class Slip10RawIndex extends Uint32 {
   static normal(normalIndex: number): Slip10RawIndex;
   isHardened(): boolean;
 }
+export declare type HdPath = readonly Slip10RawIndex[];
 export declare class Slip10 {
-  static derivePath(curve: Slip10Curve, seed: Uint8Array, path: readonly Slip10RawIndex[]): Slip10Result;
+  static derivePath(curve: Slip10Curve, seed: Uint8Array, path: HdPath): Slip10Result;
   private static master;
   private static child;
   /**
@@ -36,5 +37,5 @@ export declare class Slip10 {
   private static isGteN;
   private static n;
 }
-export declare function pathToString(path: readonly Slip10RawIndex[]): string;
-export declare function stringToPath(input: string): readonly Slip10RawIndex[];
+export declare function pathToString(path: HdPath): string;
+export declare function stringToPath(input: string): HdPath;

From bfbb01c6bfe9f68dd9a21508e6854e7443ea9303 Mon Sep 17 00:00:00 2001
From: willclarktech <willclarktech@users.noreply.github.com>
Date: Tue, 15 Sep 2020 13:33:58 +0200
Subject: [PATCH 29/33] cli: Use HdPath type

---
 packages/cli/examples/coralnet.ts | 12 ++++++------
 packages/cli/src/cli.ts           |  1 +
 2 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/packages/cli/examples/coralnet.ts b/packages/cli/examples/coralnet.ts
index 9a489f66..c6c9117c 100644
--- a/packages/cli/examples/coralnet.ts
+++ b/packages/cli/examples/coralnet.ts
@@ -1,20 +1,20 @@
 interface Options {
   readonly httpUrl: string;
   readonly bech32prefix: string;
-  readonly hdPath: readonly Slip10RawIndex[];
+  readonly hdPath: HdPath;
   readonly gasPrice: GasPrice;
   readonly gasLimits: Partial<GasLimits<CosmWasmFeeTable>>; // only set the ones you want to override
 }
 
 const coralnetOptions: Options = {
-  httpUrl: 'https://lcd.coralnet.cosmwasm.com',
+  httpUrl: "https://lcd.coralnet.cosmwasm.com",
   gasPrice: GasPrice.fromString("0.025ushell"),
-  bech32prefix: 'coral',
+  bech32prefix: "coral",
   hdPath: makeCosmoshubPath(0),
-  gasLimits:  {
+  gasLimits: {
     upload: 1500000,
-  }
-}
+  },
+};
 
 const wallet = await Secp256k1Wallet.generate(12, coralnetOptions.hdPath, coralnetOptions.bech32prefix);
 const [{ address }] = await wallet.getAccounts();
diff --git a/packages/cli/src/cli.ts b/packages/cli/src/cli.ts
index e84a737e..b338bce1 100644
--- a/packages/cli/src/cli.ts
+++ b/packages/cli/src/cli.ts
@@ -71,6 +71,7 @@ export async function main(originalArgs: readonly string[]): Promise<void> {
         "Ed25519",
         "Ed25519Keypair",
         "EnglishMnemonic",
+        "HdPath",
         "Random",
         "Secp256k1",
         "Sha256",

From 83a17752843654ed993a69f33171ffdc573f4e19 Mon Sep 17 00:00:00 2001
From: willclarktech <willclarktech@users.noreply.github.com>
Date: Tue, 15 Sep 2020 13:34:29 +0200
Subject: [PATCH 30/33] launchpad: Use HdPath type

---
 packages/launchpad/src/secp256k1wallet.ts     | 10 +++++-----
 packages/launchpad/src/wallet.ts              |  3 ++-
 packages/launchpad/types/secp256k1wallet.d.ts | 10 +++-------
 packages/launchpad/types/wallet.d.ts          |  4 ++--
 4 files changed, 12 insertions(+), 15 deletions(-)

diff --git a/packages/launchpad/src/secp256k1wallet.ts b/packages/launchpad/src/secp256k1wallet.ts
index 6c393cfa..5f5aea9a 100644
--- a/packages/launchpad/src/secp256k1wallet.ts
+++ b/packages/launchpad/src/secp256k1wallet.ts
@@ -1,12 +1,12 @@
 import {
   Bip39,
   EnglishMnemonic,
+  HdPath,
   pathToString,
   Random,
   Secp256k1,
   Slip10,
   Slip10Curve,
-  Slip10RawIndex,
   stringToPath,
 } from "@cosmjs/crypto";
 import { fromBase64, fromUtf8, toBase64, toUtf8 } from "@cosmjs/encoding";
@@ -104,7 +104,7 @@ export function extractKdfConfiguration(serialization: string): KdfConfiguration
  * Derivation information required to derive a keypair and an address from a mnemonic.
  */
 interface Secp256k1Derivation {
-  readonly hdPath: readonly Slip10RawIndex[];
+  readonly hdPath: HdPath;
   readonly prefix: string;
 }
 
@@ -118,7 +118,7 @@ export class Secp256k1Wallet implements OfflineSigner {
    */
   public static async fromMnemonic(
     mnemonic: string,
-    hdPath: readonly Slip10RawIndex[] = makeCosmoshubPath(0),
+    hdPath: HdPath = makeCosmoshubPath(0),
     prefix = "cosmos",
   ): Promise<Secp256k1Wallet> {
     const mnemonicChecked = new EnglishMnemonic(mnemonic);
@@ -143,7 +143,7 @@ export class Secp256k1Wallet implements OfflineSigner {
    */
   public static async generate(
     length: 12 | 15 | 18 | 21 | 24 = 12,
-    hdPath: readonly Slip10RawIndex[] = makeCosmoshubPath(0),
+    hdPath: HdPath = makeCosmoshubPath(0),
     prefix = "cosmos",
   ): Promise<Secp256k1Wallet> {
     const entropyLength = 4 * Math.floor((11 * length) / 33);
@@ -223,7 +223,7 @@ export class Secp256k1Wallet implements OfflineSigner {
 
   private constructor(
     mnemonic: EnglishMnemonic,
-    hdPath: readonly Slip10RawIndex[],
+    hdPath: HdPath,
     privkey: Uint8Array,
     pubkey: Uint8Array,
     prefix: string,
diff --git a/packages/launchpad/src/wallet.ts b/packages/launchpad/src/wallet.ts
index f8e4b1ab..eaded173 100644
--- a/packages/launchpad/src/wallet.ts
+++ b/packages/launchpad/src/wallet.ts
@@ -1,5 +1,6 @@
 import {
   Argon2id,
+  HdPath,
   isArgon2idOptions,
   Random,
   Sha256,
@@ -52,7 +53,7 @@ export function prehash(bytes: Uint8Array, type: PrehashType): Uint8Array {
  * The Cosmoshub derivation path in the form `m/44'/118'/0'/0/a`
  * with 0-based account index `a`.
  */
-export function makeCosmoshubPath(a: number): readonly Slip10RawIndex[] {
+export function makeCosmoshubPath(a: number): HdPath {
   return [
     Slip10RawIndex.hardened(44),
     Slip10RawIndex.hardened(118),
diff --git a/packages/launchpad/types/secp256k1wallet.d.ts b/packages/launchpad/types/secp256k1wallet.d.ts
index 06e9510c..a24a3366 100644
--- a/packages/launchpad/types/secp256k1wallet.d.ts
+++ b/packages/launchpad/types/secp256k1wallet.d.ts
@@ -1,4 +1,4 @@
-import { Slip10RawIndex } from "@cosmjs/crypto";
+import { HdPath } from "@cosmjs/crypto";
 import { StdSignature } from "./types";
 import { AccountData, EncryptionConfiguration, KdfConfiguration, OfflineSigner, PrehashType } from "./wallet";
 /**
@@ -40,11 +40,7 @@ export declare class Secp256k1Wallet implements OfflineSigner {
    * @param hdPath The BIP-32/SLIP-10 derivation path. Defaults to the Cosmos Hub/ATOM path `m/44'/118'/0'/0/0`.
    * @param prefix The bech32 address prefix (human readable part). Defaults to "cosmos".
    */
-  static fromMnemonic(
-    mnemonic: string,
-    hdPath?: readonly Slip10RawIndex[],
-    prefix?: string,
-  ): Promise<Secp256k1Wallet>;
+  static fromMnemonic(mnemonic: string, hdPath?: HdPath, prefix?: string): Promise<Secp256k1Wallet>;
   /**
    * Generates a new wallet with a BIP39 mnemonic of the given length.
    *
@@ -54,7 +50,7 @@ export declare class Secp256k1Wallet implements OfflineSigner {
    */
   static generate(
     length?: 12 | 15 | 18 | 21 | 24,
-    hdPath?: readonly Slip10RawIndex[],
+    hdPath?: HdPath,
     prefix?: string,
   ): Promise<Secp256k1Wallet>;
   /**
diff --git a/packages/launchpad/types/wallet.d.ts b/packages/launchpad/types/wallet.d.ts
index c0818ef2..5c284f5d 100644
--- a/packages/launchpad/types/wallet.d.ts
+++ b/packages/launchpad/types/wallet.d.ts
@@ -1,4 +1,4 @@
-import { Slip10RawIndex } from "@cosmjs/crypto";
+import { HdPath } from "@cosmjs/crypto";
 import { StdSignature } from "./types";
 export declare type PrehashType = "sha256" | "sha512" | null;
 export declare type Algo = "secp256k1" | "ed25519" | "sr25519";
@@ -22,7 +22,7 @@ export declare function prehash(bytes: Uint8Array, type: PrehashType): Uint8Arra
  * The Cosmoshub derivation path in the form `m/44'/118'/0'/0/a`
  * with 0-based account index `a`.
  */
-export declare function makeCosmoshubPath(a: number): readonly Slip10RawIndex[];
+export declare function makeCosmoshubPath(a: number): HdPath;
 /**
  * A fixed salt is chosen to archive a deterministic password to key derivation.
  * This reduces the scope of a potential rainbow attack to all CosmJS users.

From 8e7cadc605c89685c3de7cad11eeb3c867a361d7 Mon Sep 17 00:00:00 2001
From: willclarktech <willclarktech@users.noreply.github.com>
Date: Tue, 15 Sep 2020 13:27:36 +0200
Subject: [PATCH 31/33] launchpad-ledger: Allow multiple HD paths in Ledger

---
 .../launchpad-ledger/src/launchpadledger.ts   | 28 ++++++++------
 packages/launchpad-ledger/src/ledgersigner.ts | 37 ++++++++-----------
 .../types/launchpadledger.d.ts                | 11 +++---
 .../launchpad-ledger/types/ledgersigner.d.ts  |  3 +-
 4 files changed, 39 insertions(+), 40 deletions(-)

diff --git a/packages/launchpad-ledger/src/launchpadledger.ts b/packages/launchpad-ledger/src/launchpadledger.ts
index 6b078d0f..b3c8bf05 100644
--- a/packages/launchpad-ledger/src/launchpadledger.ts
+++ b/packages/launchpad-ledger/src/launchpadledger.ts
@@ -1,4 +1,4 @@
-import { Secp256k1Signature, Slip10RawIndex } from "@cosmjs/crypto";
+import { HdPath, Secp256k1Signature } from "@cosmjs/crypto";
 import { fromUtf8 } from "@cosmjs/encoding";
 import { makeCosmoshubPath } from "@cosmjs/launchpad";
 import { assert } from "@cosmjs/utils";
@@ -59,7 +59,7 @@ async function createTransport(timeout: number): Promise<Transport> {
   }
 }
 
-function unharden(hdPath: readonly Slip10RawIndex[]): number[] {
+function unharden(hdPath: HdPath): number[] {
   return hdPath.map((n) => (n.isHardened() ? n.toNumber() - 2 ** 31 : n.toNumber()));
 }
 
@@ -67,14 +67,14 @@ const cosmosHdPath = makeCosmoshubPath(0);
 const cosmosBech32Prefix = "cosmos";
 
 export interface LaunchpadLedgerOptions {
-  readonly hdPath?: readonly Slip10RawIndex[];
+  readonly hdPaths?: readonly HdPath[];
   readonly prefix?: string;
   readonly testModeAllowed?: boolean;
 }
 
 export class LaunchpadLedger {
   private readonly testModeAllowed: boolean;
-  private readonly hdPath: readonly Slip10RawIndex[];
+  private readonly hdPaths: readonly HdPath[];
   private readonly prefix: string;
   private cosmosApp: CosmosApp | null;
   public readonly platform: string;
@@ -82,16 +82,16 @@ export class LaunchpadLedger {
 
   constructor(options: LaunchpadLedgerOptions = {}) {
     const defaultOptions = {
-      hdPath: cosmosHdPath,
+      hdPaths: [cosmosHdPath],
       prefix: cosmosBech32Prefix,
       testModeAllowed: false,
     };
-    const { hdPath, prefix, testModeAllowed } = {
+    const { hdPaths, prefix, testModeAllowed } = {
       ...defaultOptions,
       ...options,
     };
     this.testModeAllowed = testModeAllowed;
-    this.hdPath = hdPath;
+    this.hdPaths = hdPaths;
     this.prefix = prefix;
     this.cosmosApp = null;
     this.platform = navigator.platform;
@@ -125,27 +125,33 @@ export class LaunchpadLedger {
     return `${major}.${minor}.${patch}`;
   }
 
-  async getPubkey(): Promise<Uint8Array> {
+  async getPubkey(hdPath?: HdPath): Promise<Uint8Array> {
     await this.connect();
     assert(this.cosmosApp, "Cosmos Ledger App is not connected");
 
+    const hdPathToUse = hdPath || this.hdPaths[0];
     // ledger-cosmos-js hardens the first three indices
-    const response = await this.cosmosApp.publicKey(unharden(this.hdPath));
+    const response = await this.cosmosApp.publicKey(unharden(hdPathToUse));
     this.handleLedgerErrors(response);
     return Uint8Array.from((response as PublicKeyResponse).compressed_pk);
   }
 
+  async getPubkeys(): Promise<readonly Uint8Array[]> {
+    return Promise.all(this.hdPaths.map(async (hdPath) => this.getPubkey(hdPath)));
+  }
+
   async getCosmosAddress(pubkey?: Uint8Array): Promise<string> {
     const pubkeyToUse = pubkey || (await this.getPubkey());
     return CosmosApp.getBech32FromPK(this.prefix, Buffer.from(pubkeyToUse));
   }
 
-  async sign(message: Uint8Array): Promise<Uint8Array> {
+  async sign(message: Uint8Array, hdPath?: HdPath): Promise<Uint8Array> {
     await this.connect();
     assert(this.cosmosApp, "Cosmos Ledger App is not connected");
 
+    const hdPathToUse = hdPath || this.hdPaths[0];
     // ledger-cosmos-js hardens the first three indices
-    const response = await this.cosmosApp.sign(unharden(this.hdPath), fromUtf8(message));
+    const response = await this.cosmosApp.sign(unharden(hdPathToUse), fromUtf8(message));
     this.handleLedgerErrors(response, {
       rejectionMessage: "Transaction signing request was rejected by the user",
     });
diff --git a/packages/launchpad-ledger/src/ledgersigner.ts b/packages/launchpad-ledger/src/ledgersigner.ts
index ef6d83d8..836c7480 100644
--- a/packages/launchpad-ledger/src/ledgersigner.ts
+++ b/packages/launchpad-ledger/src/ledgersigner.ts
@@ -4,8 +4,7 @@ import { LaunchpadLedger, LaunchpadLedgerOptions } from "./launchpadledger";
 
 export class LedgerSigner implements OfflineSigner {
   private readonly ledger: LaunchpadLedger;
-  private address: string | undefined;
-  private pubkey: Uint8Array | undefined;
+  private accounts?: readonly AccountData[];
 
   constructor(options?: LaunchpadLedgerOptions) {
     this.ledger = new LaunchpadLedger(options);
@@ -14,37 +13,31 @@ export class LedgerSigner implements OfflineSigner {
   public async getAccounts(): Promise<readonly AccountData[]> {
     await this.ledger.connect();
 
-    if (!this.pubkey) {
-      this.pubkey = await this.ledger.getPubkey();
-    }
-    if (!this.address) {
-      this.address = await this.ledger.getCosmosAddress(this.pubkey);
+    if (!this.accounts) {
+      const pubkeys = await this.ledger.getPubkeys();
+      this.accounts = await Promise.all(
+        pubkeys.map(async (pubkey) => ({
+          algo: "secp256k1" as const,
+          address: await this.ledger.getCosmosAddress(pubkey),
+          pubkey: pubkey,
+        })),
+      );
     }
 
-    return [
-      {
-        algo: "secp256k1",
-        address: this.address,
-        pubkey: this.pubkey,
-      },
-    ];
+    return this.accounts;
   }
 
   public async sign(address: string, message: Uint8Array): Promise<StdSignature> {
     await this.ledger.connect();
 
-    if (!this.pubkey) {
-      this.pubkey = await this.ledger.getPubkey();
-    }
-    if (!this.address) {
-      this.address = await this.ledger.getCosmosAddress(this.pubkey);
-    }
+    const accounts = this.accounts || (await this.getAccounts());
+    const accountForAddress = accounts.find((account) => account.address === address);
 
-    if (address !== this.address) {
+    if (!accountForAddress) {
       throw new Error(`Address ${address} not found in wallet`);
     }
 
     const signature = await this.ledger.sign(message);
-    return encodeSecp256k1Signature(this.pubkey, signature);
+    return encodeSecp256k1Signature(accountForAddress.pubkey, signature);
   }
 }
diff --git a/packages/launchpad-ledger/types/launchpadledger.d.ts b/packages/launchpad-ledger/types/launchpadledger.d.ts
index b4f01c24..c9167fc3 100644
--- a/packages/launchpad-ledger/types/launchpadledger.d.ts
+++ b/packages/launchpad-ledger/types/launchpadledger.d.ts
@@ -1,12 +1,12 @@
-import { Slip10RawIndex } from "@cosmjs/crypto";
+import { HdPath } from "@cosmjs/crypto";
 export interface LaunchpadLedgerOptions {
-  readonly hdPath?: readonly Slip10RawIndex[];
+  readonly hdPaths?: readonly HdPath[];
   readonly prefix?: string;
   readonly testModeAllowed?: boolean;
 }
 export declare class LaunchpadLedger {
   private readonly testModeAllowed;
-  private readonly hdPath;
+  private readonly hdPaths;
   private readonly prefix;
   private cosmosApp;
   readonly platform: string;
@@ -14,9 +14,10 @@ export declare class LaunchpadLedger {
   constructor(options?: LaunchpadLedgerOptions);
   connect(timeout?: number): Promise<LaunchpadLedger>;
   getCosmosAppVersion(): Promise<string>;
-  getPubkey(): Promise<Uint8Array>;
+  getPubkey(hdPath?: HdPath): Promise<Uint8Array>;
+  getPubkeys(): Promise<readonly Uint8Array[]>;
   getCosmosAddress(pubkey?: Uint8Array): Promise<string>;
-  sign(message: Uint8Array): Promise<Uint8Array>;
+  sign(message: Uint8Array, hdPath?: HdPath): Promise<Uint8Array>;
   private verifyAppMode;
   private getOpenAppName;
   private verifyAppVersion;
diff --git a/packages/launchpad-ledger/types/ledgersigner.d.ts b/packages/launchpad-ledger/types/ledgersigner.d.ts
index abf5b3cb..dc4c4e49 100644
--- a/packages/launchpad-ledger/types/ledgersigner.d.ts
+++ b/packages/launchpad-ledger/types/ledgersigner.d.ts
@@ -2,8 +2,7 @@ import { AccountData, OfflineSigner, StdSignature } from "@cosmjs/launchpad";
 import { LaunchpadLedgerOptions } from "./launchpadledger";
 export declare class LedgerSigner implements OfflineSigner {
   private readonly ledger;
-  private address;
-  private pubkey;
+  private accounts?;
   constructor(options?: LaunchpadLedgerOptions);
   getAccounts(): Promise<readonly AccountData[]>;
   sign(address: string, message: Uint8Array): Promise<StdSignature>;

From 9d0e601a179107cb150dfb6db400394106d9a856 Mon Sep 17 00:00:00 2001
From: willclarktech <willclarktech@users.noreply.github.com>
Date: Tue, 15 Sep 2020 14:59:14 +0200
Subject: [PATCH 32/33] launchpad-ledger: Improve error handling

---
 .../launchpad-ledger/src/launchpadledger.ts   | 21 ++++++++++++-------
 .../types/launchpadledger.d.ts                |  4 ++++
 2 files changed, 17 insertions(+), 8 deletions(-)

diff --git a/packages/launchpad-ledger/src/launchpadledger.ts b/packages/launchpad-ledger/src/launchpadledger.ts
index b3c8bf05..d781ea95 100644
--- a/packages/launchpad-ledger/src/launchpadledger.ts
+++ b/packages/launchpad-ledger/src/launchpadledger.ts
@@ -12,6 +12,13 @@ import CosmosApp, {
 } from "ledger-cosmos-js";
 import semver from "semver";
 
+/* eslint-disable @typescript-eslint/naming-convention */
+export interface LedgerAppErrorResponse {
+  readonly error_message?: string;
+  readonly device_locked?: boolean;
+}
+/* eslint-enable */
+
 const defaultInteractionTimeout = 120; // seconds to wait for user action on Ledger, currently is always limited to 60
 const requiredCosmosAppVersion = "1.5.3";
 
@@ -152,9 +159,7 @@ export class LaunchpadLedger {
     const hdPathToUse = hdPath || this.hdPaths[0];
     // ledger-cosmos-js hardens the first three indices
     const response = await this.cosmosApp.sign(unharden(hdPathToUse), fromUtf8(message));
-    this.handleLedgerErrors(response, {
-      rejectionMessage: "Transaction signing request was rejected by the user",
-    });
+    this.handleLedgerErrors(response, "Transaction signing request was rejected by the user");
     return Secp256k1Signature.fromDer((response as SignResponse).signature).toFixedLength();
   }
 
@@ -196,13 +201,14 @@ export class LaunchpadLedger {
     await this.verifyCosmosAppIsOpen();
   }
 
-  /* eslint-disable @typescript-eslint/naming-convention */
   private handleLedgerErrors(
+    /* eslint-disable @typescript-eslint/naming-convention */
     {
-      error_message: errorMessage,
+      error_message: errorMessage = "No errors",
       device_locked: deviceLocked = false,
-    }: { error_message: string; device_locked?: boolean },
-    { rejectionMessage = "Request was rejected by the user" } = {},
+    }: LedgerAppErrorResponse,
+    /* eslint-enable */
+    rejectionMessage = "Request was rejected by the user",
   ): void {
     if (deviceLocked) {
       throw new Error("Ledger’s screensaver mode is on");
@@ -228,5 +234,4 @@ export class LaunchpadLedger {
         throw new Error(`Ledger Native Error: ${errorMessage}`);
     }
   }
-  /* eslint-enable */
 }
diff --git a/packages/launchpad-ledger/types/launchpadledger.d.ts b/packages/launchpad-ledger/types/launchpadledger.d.ts
index c9167fc3..6eda113d 100644
--- a/packages/launchpad-ledger/types/launchpadledger.d.ts
+++ b/packages/launchpad-ledger/types/launchpadledger.d.ts
@@ -1,4 +1,8 @@
 import { HdPath } from "@cosmjs/crypto";
+export interface LedgerAppErrorResponse {
+  readonly error_message?: string;
+  readonly device_locked?: boolean;
+}
 export interface LaunchpadLedgerOptions {
   readonly hdPaths?: readonly HdPath[];
   readonly prefix?: string;

From e84bf97ff526c94389de7863d8313501c7a2a3fd Mon Sep 17 00:00:00 2001
From: willclarktech <willclarktech@users.noreply.github.com>
Date: Tue, 15 Sep 2020 15:03:06 +0200
Subject: [PATCH 33/33] root: Update CHANGELOG for launchpad-ledger etc

---
 CHANGELOG.md | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index d85a0ac1..e039e715 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,7 @@
 
 ## 0.23.0 (unreleased)
 
+- @cosmjs/cli: Expose `HdPath` type.
 - @cosmjs/cosmwasm: Rename `CosmWasmClient.postTx` method to `.broadcastTx`.
 - @cosmjs/cosmwasm: Rename `FeeTable` type to `CosmWasmFeeTable`.
 - @cosmjs/cosmwasm: `SigningCosmWasmClient` constructor now takes optional
@@ -13,6 +14,8 @@
   init, migrate and handle messages (in `WasmExtension.wasm.queryContractSmart`,
   `CosmWasmClient.queryContractSmart`, `SigningCosmWasmClient.instantiate`,
   `SigningCosmWasmClient.migrate`, `SigningCosmWasmClient.execute`).
+- @cosmjs/crypto: Export new type alias `HdPath`.
+- @cosmjs/crypto: Add `Secp256k1Signature.toFixedLength` method.
 - @cosmjs/demo-staking: Remove package and supporting scripts.
 - @cosmjs/encoding: Add `limit` parameter to `Bech32.encode` and `.decode`. The
   new default limit for decoding is infinity (was 90 before). Set it to 90 to
@@ -42,6 +45,9 @@
   `isSearchBySentFromOrToQuery` and `isSearchByTagsQuery`.
 - @cosmjs/launchpad: Change type of `TxsResponse.logs` and
   `BroadcastTxsResponse.logs` to `unknown[]`.
+- @cosmjs/launchpad-ledger: Add package supporting Ledger device integration for
+  Launchpad. Two new classes are provided: `LedgerSigner` (for most use cases)
+  and `LaunchpadLedger` for more fine-grained access.
 - @cosmjs/math: Add `.multiply` method to `Decimal` class.
 - @cosmjs/tendermint-rpc: Make `BroadcastTxCommitResponse.height` non-optional.
 - @cosmjs/tendermint-rpc: Change type of `GenesisResponse.appState` to