diff --git a/packages/app-explorer/package.json b/packages/app-explorer/package.json
index 79bfd49380..d6b3d7a8b5 100644
--- a/packages/app-explorer/package.json
+++ b/packages/app-explorer/package.json
@@ -12,10 +12,10 @@
   },
   "dependencies": {
     "@babel/runtime": "^7.0.0-beta.47",
-    "@polkadot/primitives": "^0.15.8",
-    "@polkadot/primitives-codec": "^0.15.8",
-    "@polkadot/primitives-json": "^0.15.8",
+    "@polkadot/primitives": "^0.16.5",
+    "@polkadot/primitives-codec": "^0.16.5",
+    "@polkadot/primitives-json": "^0.16.5",
     "@polkadot/ui-app": "^0.6.4",
-    "@polkadot/util-crypto": "^0.21.3"
+    "@polkadot/util-crypto": "^0.22.1"
   }
 }
diff --git a/packages/app-explorer/src/BestHash.js b/packages/app-explorer/src/BestHash.js
index 567080d7f0..e9ca0755fc 100644
--- a/packages/app-explorer/src/BestHash.js
+++ b/packages/app-explorer/src/BestHash.js
@@ -7,12 +7,12 @@ import type { Header } from '@polkadot/primitives/header';
 
 import headerHash from '@polkadot/primitives-codec/header/hash';
 import withApiDiv from '@polkadot/ui-react-rx/with/apiDiv';
-import u8aToHexShort from '@polkadot/util/u8a/toHexShort';
+import u8aToHex from '@polkadot/util/u8a/toHex';
 
 export default withApiDiv({ name: 'newHead', section: 'chain' })(
   (value?: Header): ?string => {
     return value
-      ? u8aToHexShort(headerHash(value))
+      ? u8aToHex(headerHash(value), 64)
       : value;
   },
   { className: 'explorer--BestHash' }
diff --git a/packages/app-extrinsics/package.json b/packages/app-extrinsics/package.json
index 5171635ee0..d1fe075a11 100644
--- a/packages/app-extrinsics/package.json
+++ b/packages/app-extrinsics/package.json
@@ -12,8 +12,8 @@
   },
   "dependencies": {
     "@babel/runtime": "^7.0.0-beta.47",
-    "@polkadot/extrinsics": "^0.15.8",
-    "@polkadot/extrinsics-codec": "^0.15.8",
+    "@polkadot/extrinsics": "^0.16.5",
+    "@polkadot/extrinsics-codec": "^0.16.5",
     "@polkadot/ui-app": "^0.6.4",
     "@polkadot/ui-signer": "^0.6.4",
     "react-dropzone": "^4.2.9"
diff --git a/packages/app-extrinsics/src/Extrinsic.js b/packages/app-extrinsics/src/Extrinsic.js
index 28de6e6b30..667b3db3cf 100644
--- a/packages/app-extrinsics/src/Extrinsic.js
+++ b/packages/app-extrinsics/src/Extrinsic.js
@@ -3,7 +3,7 @@
 // of the ISC license. See the LICENSE file for details.
 // @flow
 
-import type { Extrinsic } from '@polkadot/extrinsics/types';
+import type { Extrinsic$Method } from '@polkadot/extrinsics/types';
 import type { BareProps } from '@polkadot/ui-app/types';
 import type { RawParam } from '@polkadot/ui-app/Params/types';
 import type { EncodedMessage } from '@polkadot/ui-signer/types';
@@ -19,7 +19,7 @@ import isUndefined from '@polkadot/util/is/undefined';
 import paramComponents from './Params';
 
 type Props = BareProps & {
-  defaultValue: Extrinsic,
+  defaultValue: Extrinsic$Method,
   isError?: boolean,
   isPrivate?: boolean,
   labelMethod?: string,
@@ -28,7 +28,7 @@ type Props = BareProps & {
 };
 
 type State = {
-  extrinsic: Extrinsic,
+  extrinsic: Extrinsic$Method,
   values: Array<RawParam>
 };
 
@@ -92,7 +92,7 @@ export default class ExtrinsicDisplay extends React.PureComponent<Props, State>
     });
   }
 
-  onChangeExtrinsic = (extrinsic: Extrinsic): void => {
+  onChangeExtrinsic = (extrinsic: Extrinsic$Method): void => {
     this.nextState({ extrinsic });
   };
 
diff --git a/packages/app-extrinsics/src/Params/Call.js b/packages/app-extrinsics/src/Params/Call.js
index 61d1c68fe0..58520c130e 100644
--- a/packages/app-extrinsics/src/Params/Call.js
+++ b/packages/app-extrinsics/src/Params/Call.js
@@ -11,7 +11,7 @@ import extrinsics from '@polkadot/extrinsics-substrate';
 
 import Extrinsic from './Extrinsic';
 
-const defaultValue = extrinsics.staking.methods.public.transfer;
+const defaultValue = extrinsics.staking.public.transfer;
 
 export default function Call ({ className, isDisabled, isError, label, onChange, style, withLabel }: Props): React$Node {
   return (
diff --git a/packages/app-extrinsics/src/Params/Extrinsic.js b/packages/app-extrinsics/src/Params/Extrinsic.js
index 7be0377b81..bc3889775b 100644
--- a/packages/app-extrinsics/src/Params/Extrinsic.js
+++ b/packages/app-extrinsics/src/Params/Extrinsic.js
@@ -3,7 +3,7 @@
 // of the ISC license. See the LICENSE file for details.
 // @flow
 
-import type { Extrinsic } from '@polkadot/extrinsics/types';
+import type { Extrinsic$Method } from '@polkadot/extrinsics/types';
 import type { I18nProps } from '@polkadot/ui-app/types';
 import type { RawParam$OnChange } from '@polkadot/ui-app/Params/types';
 import type { EncodedMessage } from '@polkadot/ui-signer/types';
@@ -14,7 +14,7 @@ import BaseExtrinsic from '../Extrinsic';
 import translate from '../translate';
 
 type Props = I18nProps & {
-  defaultValue: Extrinsic,
+  defaultValue: Extrinsic$Method,
   isDisabled: boolean,
   isError: boolean,
   isPrivate: boolean,
@@ -23,7 +23,7 @@ type Props = I18nProps & {
   withLabel?: boolean,
 };
 
-class CExtrinsic extends React.PureComponent<Props> {
+class Extrinsic extends React.PureComponent<Props> {
   render (): React$Node {
     const { className, defaultValue, isDisabled, isError, isPrivate, label, style, t, withLabel } = this.props;
 
@@ -64,4 +64,4 @@ class CExtrinsic extends React.PureComponent<Props> {
   }
 }
 
-export default translate(CExtrinsic);
+export default translate(Extrinsic);
diff --git a/packages/app-extrinsics/src/Params/Proposal.js b/packages/app-extrinsics/src/Params/Proposal.js
index 666a7bbb87..c67b530b86 100644
--- a/packages/app-extrinsics/src/Params/Proposal.js
+++ b/packages/app-extrinsics/src/Params/Proposal.js
@@ -11,7 +11,7 @@ import extrinsics from '@polkadot/extrinsics-substrate';
 
 import Extrinsic from './Extrinsic';
 
-const defaultValue = extrinsics.consensus.methods.private.setCode;
+const defaultValue = extrinsics.consensus.private.setCode;
 
 export default function Proposal ({ className, isDisabled, isError, label, onChange, style, withLabel }: Props): React$Node {
   return (
diff --git a/packages/app-extrinsics/src/Selection.js b/packages/app-extrinsics/src/Selection.js
index 725964c452..40fd449841 100644
--- a/packages/app-extrinsics/src/Selection.js
+++ b/packages/app-extrinsics/src/Selection.js
@@ -30,7 +30,7 @@ type State = {
   publicKey: Uint8Array
 };
 
-const defaultExtrinsic = extrinsics.staking.methods.public.transfer;
+const defaultExtrinsic = extrinsics.staking.public.transfer;
 const defaultRpc = rpc.author.methods.submitExtrinsic;
 
 class Selection extends React.PureComponent<Props, State> {
diff --git a/packages/app-rpc/src/Results.js b/packages/app-rpc/src/Results.js
index 616447c2ca..8acd872a4e 100644
--- a/packages/app-rpc/src/Results.js
+++ b/packages/app-rpc/src/Results.js
@@ -12,6 +12,8 @@ import Output from '@polkadot/ui-app/Output';
 import classes from '@polkadot/ui-app/util/classes';
 import isUndefined from '@polkadot/util/is/undefined';
 
+import resultToText from './resultToText';
+
 type Props = BareProps & {
   queue: Array<QueueTx>
 };
@@ -40,7 +42,7 @@ export default function Results ({ className, queue = [], style }: Props): React
           value={
             error
               ? error.message
-              : result
+              : resultToText(result)
           }
         />
       ))}
diff --git a/packages/app-rpc/src/Selection.js b/packages/app-rpc/src/Selection.js
index 5996f4be42..dc68462045 100644
--- a/packages/app-rpc/src/Selection.js
+++ b/packages/app-rpc/src/Selection.js
@@ -3,7 +3,7 @@
 // of the ISC license. See the LICENSE file for details.
 // @flow
 
-import type { InterfaceMethodDefinition } from '@polkadot/jsonrpc/types';
+import type { Interface$Method } from '@polkadot/jsonrpc/types';
 import type { RawParam } from '@polkadot/ui-app/Params/types';
 import type { I18nProps } from '@polkadot/ui-app/types';
 import type { QueueTx$MessageAdd } from '@polkadot/ui-signer/types';
@@ -31,7 +31,7 @@ type State = {
   isValid: boolean,
   nonce: BN,
   publicKey?: Uint8Array | null,
-  rpc: InterfaceMethodDefinition,
+  rpc: Interface$Method,
   values: Array<RawParam>
 }
 
@@ -116,7 +116,7 @@ class Selection extends React.PureComponent<Props, State> {
     this.nextState({ nonce, publicKey });
   }
 
-  onChangeMethod = (rpc: InterfaceMethodDefinition): void => {
+  onChangeMethod = (rpc: Interface$Method): void => {
     this.nextState({ rpc });
   }
 
diff --git a/packages/app-rpc/src/resultToText.js b/packages/app-rpc/src/resultToText.js
new file mode 100644
index 0000000000..6d4601feb3
--- /dev/null
+++ b/packages/app-rpc/src/resultToText.js
@@ -0,0 +1,49 @@
+// Copyright 2017-2018 Jaco Greeff
+// This software may be modified and distributed under the terms
+// of the ISC license. See the LICENSE file for details.
+// @flow
+
+import bnToHex from '@polkadot/util/bn/toHex';
+import u8aToHex from '@polkadot/util/u8a/toHex';
+import isBn from '@polkadot/util/is/bn';
+import isObject from '@polkadot/util/is/object';
+import isU8a from '@polkadot/util/is/u8a';
+
+function resultToText (result: mixed): mixed {
+  if (isU8a(result)) {
+    // $FlowFixMe type has been determined
+    return u8aToHex(result);
+  }
+
+  if (isBn(result)) {
+    // $FlowFixMe type has been determined
+    return bnToHex(result);
+  }
+
+  if (Array.isArray(result)) {
+    return result.map((value) =>
+      resultToText(value)
+    );
+  }
+
+  if (isObject(result)) {
+    return JSON
+      .stringify(
+        // $FlowFixMe type has been determined
+        Object
+          .keys(result)
+          .reduce((map, key) => {
+            // $FlowFixMe type has been determined
+            map[key] = resultToText(result[key]);
+
+            return map;
+          }, {})
+      )
+      .replace(/\\"/g, '"')
+      .replace(/":"/g, '": "');
+  }
+
+  return result;
+}
+
+export default resultToText;
diff --git a/packages/app-storage/src/Selection.js b/packages/app-storage/src/Selection.js
index 650b943f5f..29852a57aa 100644
--- a/packages/app-storage/src/Selection.js
+++ b/packages/app-storage/src/Selection.js
@@ -3,7 +3,7 @@
 // of the ISC license. See the LICENSE file for details.
 // @flow
 
-import type { StorageDef$Key } from '@polkadot/storage/types';
+import type { Storage$Key } from '@polkadot/storage/types';
 import type { I18nProps } from '@polkadot/ui-app/types';
 import type { RawParams } from '@polkadot/ui-app/Params/types';
 import type { StorageQuery } from './types';
@@ -26,7 +26,7 @@ type Props = I18nProps & {
 
 type State = {
   isValid: boolean,
-  key: StorageDef$Key,
+  key: Storage$Key,
   params: RawParams
 };
 
@@ -105,7 +105,7 @@ class Selection extends React.PureComponent<Props, State> {
     });
   }
 
-  onChangeKey = (key: StorageDef$Key): void => {
+  onChangeKey = (key: Storage$Key): void => {
     this.nextState({ key });
   }
 
diff --git a/packages/app-storage/src/types.js b/packages/app-storage/src/types.js
index a041b1fe62..8fd09d1b57 100644
--- a/packages/app-storage/src/types.js
+++ b/packages/app-storage/src/types.js
@@ -3,11 +3,11 @@
 // of the ISC license. See the LICENSE file for details.
 // @flow
 
-import type { StorageDef$Key } from '@polkadot/storage/types';
+import type { Storage$Key } from '@polkadot/storage/types';
 
 export type StorageQuery = {
   id: number,
-  key: StorageDef$Key,
+  key: Storage$Key,
   // flowlint-next-line unclear-type:off
   params: Array<any>
 }
diff --git a/packages/apps/.env b/packages/apps/.env
deleted file mode 100644
index 6f809cc254..0000000000
--- a/packages/apps/.env
+++ /dev/null
@@ -1 +0,0 @@
-SKIP_PREFLIGHT_CHECK=true
diff --git a/packages/apps/README.md b/packages/apps/README.md
index 9ae1cba167..6b2c62e013 100644
--- a/packages/apps/README.md
+++ b/packages/apps/README.md
@@ -1 +1 @@
-# @polkadot/portal
+# @polkadot/apps
diff --git a/packages/ui-app/package.json b/packages/ui-app/package.json
index 55c24a8a97..c51f4ef513 100644
--- a/packages/ui-app/package.json
+++ b/packages/ui-app/package.json
@@ -12,14 +12,14 @@
   },
   "dependencies": {
     "@babel/runtime": "^7.0.0-beta.47",
-    "@polkadot/extrinsics-substrate": "^0.15.8",
-    "@polkadot/params": "^0.15.8",
-    "@polkadot/primitives": "^0.15.8",
-    "@polkadot/storage-substrate": "^0.15.8",
+    "@polkadot/extrinsics-substrate": "^0.16.5",
+    "@polkadot/params": "^0.16.5",
+    "@polkadot/primitives": "^0.16.5",
+    "@polkadot/storage-substrate": "^0.16.5",
     "@polkadot/ui-keyring": "^0.6.4",
-    "@polkadot/ui-react": "^0.13.4",
-    "@polkadot/ui-react-rx": "^0.13.4",
-    "@polkadot/util": "^0.21.3",
+    "@polkadot/ui-react": "^0.13.6",
+    "@polkadot/ui-react-rx": "^0.13.6",
+    "@polkadot/util": "^0.22.1",
     "i18next": "^11.1.1",
     "i18next-browser-languagedetector": "^2.2.0",
     "i18next-xhr-backend": "^1.5.1",
diff --git a/packages/ui-app/src/InputExtrinsic/SelectMethod.js b/packages/ui-app/src/InputExtrinsic/SelectMethod.js
index 4dc46b1b3c..9e73329caa 100644
--- a/packages/ui-app/src/InputExtrinsic/SelectMethod.js
+++ b/packages/ui-app/src/InputExtrinsic/SelectMethod.js
@@ -3,8 +3,9 @@
 // of the ISC license. See the LICENSE file for details.
 // @flow
 
-import type { Extrinsic } from '@polkadot/extrinsics/types';
+import type { Extrinsic$Method } from '@polkadot/extrinsics/types';
 import type { I18nProps } from '../types';
+import type { DropdownOptions } from './types';
 
 import React from 'react';
 
@@ -13,27 +14,24 @@ import extrinsics from '@polkadot/extrinsics-substrate';
 import Dropdown from '../Dropdown';
 import classes from '../util/classes';
 import translate from '../translate';
-import createOptions from './options/method';
 
 type Props = I18nProps & {
   isError?: boolean,
   label?: string,
-  onChange: (value: Extrinsic) => void,
+  onChange: (value: Extrinsic$Method) => void,
+  options: DropdownOptions,
   type: 'private' | 'public',
-  value: Extrinsic,
+  value: Extrinsic$Method,
   withLabel?: boolean
 };
 
-function SelectMethod ({ className, isError, label = '', onChange, style, t, type, value: { name, section }, withLabel }: Props): React$Node {
-  // $FlowFixMe string vs ...
-  if (!extrinsics[section]) {
+function SelectMethod ({ className, isError, label = '', onChange, options, style, t, type, value: { name, section }, withLabel }: Props): React$Node {
+  if (!options.length) {
     return null;
   }
 
-  const methods = extrinsics[section].methods[type];
-  const transform = (name: string): Extrinsic =>
-    methods[name];
-  const options = createOptions(section, type);
+  const transform = (name: string): Extrinsic$Method =>
+    extrinsics[section][type][name];
 
   return (
     <Dropdown
diff --git a/packages/ui-app/src/InputExtrinsic/SelectSection.js b/packages/ui-app/src/InputExtrinsic/SelectSection.js
index 4e5935a624..ba781c104b 100644
--- a/packages/ui-app/src/InputExtrinsic/SelectSection.js
+++ b/packages/ui-app/src/InputExtrinsic/SelectSection.js
@@ -3,29 +3,27 @@
 // of the ISC license. See the LICENSE file for details.
 // @flow
 
-import type { Extrinsic, ExtrinsicSectionName } from '@polkadot/extrinsics/types';
+import type { Extrinsic$Method, Extrinsic$Sections } from '@polkadot/extrinsics/types';
 import type { I18nProps } from '../types';
+import type { DropdownOptions } from './types';
 
 import React from 'react';
 
 import Dropdown from '../Dropdown';
 import classes from '../util/classes';
 import translate from '../translate';
-import createOptions from './options/section';
 
 type Props = I18nProps & {
-  defaultValue?: ExtrinsicSectionName,
+  defaultValue?: Extrinsic$Sections,
   isError?: boolean,
   label?: string,
-  onChange: (value: ExtrinsicSectionName) => void,
-  type: 'private' | 'public',
-  value: Extrinsic,
+  onChange: (value: Extrinsic$Sections) => void,
+  options: DropdownOptions,
+  value: Extrinsic$Method,
   withLabel?: boolean
 };
 
-function SelectSection ({ className, defaultValue, isError, label = '', onChange, style, t, type, value: { section }, withLabel }: Props): React$Node {
-  const options = createOptions(type);
-
+function SelectSection ({ className, defaultValue, isError, label = '', onChange, options, style, t, value: { section }, withLabel }: Props): React$Node {
   return (
     <Dropdown
       className={classes('ui--DropdownLinked-Sections', className)}
diff --git a/packages/ui-app/src/InputExtrinsic/index.js b/packages/ui-app/src/InputExtrinsic/index.js
index 4e9e1cda49..0f75a3a3c3 100644
--- a/packages/ui-app/src/InputExtrinsic/index.js
+++ b/packages/ui-app/src/InputExtrinsic/index.js
@@ -5,8 +5,9 @@
 
 // TODO: We have a lot shared between this and InputStorage
 
-import type { Extrinsic, ExtrinsicSectionName } from '@polkadot/extrinsics/types';
+import type { Extrinsic$Method, Extrinsic$Sections } from '@polkadot/extrinsics/types';
 import type { I18nProps } from '../types';
+import type { DropdownOptions } from './types';
 
 import './InputExtrinsic.css';
 
@@ -18,19 +19,23 @@ import translate from '../translate';
 import SelectMethod from './SelectMethod';
 import SelectSection from './SelectSection';
 import methodOptions from './options/method';
+import sectionOptions from './options/section';
 
 type Props = I18nProps & {
-  defaultValue: Extrinsic,
+  defaultValue: Extrinsic$Method,
   isError?: boolean,
   isPrivate?: boolean,
   labelMethod?: string,
   labelSection?: string,
-  onChange: (value: Extrinsic) => void,
+  onChange: (value: Extrinsic$Method) => void,
   withLabel?: boolean
 };
 
 type State = {
-  value: Extrinsic
+  optionsMethod: DropdownOptions,
+  optionsSection: DropdownOptions,
+  type: 'private' | 'public',
+  value: Extrinsic$Method
 };
 
 class InputExtrinsic extends React.PureComponent<Props, State> {
@@ -39,15 +44,28 @@ class InputExtrinsic extends React.PureComponent<Props, State> {
   constructor (props: Props) {
     super(props);
 
-    this.state = {
+    this.state = ({
       value: this.props.defaultValue
+    }: $Shape<State>);
+  }
+
+  static getDerivedStateFromProps ({ isPrivate = false }: Props, { type, value: { section } }: State): $Shape<State> {
+    const newType = isPrivate ? 'private' : 'public';
+
+    if (newType === type) {
+      return null;
+    }
+
+    return {
+      optionsMethod: methodOptions(section, newType),
+      optionsSection: sectionOptions(newType),
+      type: newType
     };
   }
 
   render (): React$Node {
-    const { className, isPrivate = false, labelMethod, labelSection, style, withLabel } = this.props;
-    const { value } = this.state;
-    const type = isPrivate ? 'private' : 'public';
+    const { className, labelMethod, labelSection, style, withLabel } = this.props;
+    const { optionsMethod, optionsSection, type, value } = this.state;
 
     return (
       <div
@@ -58,7 +76,7 @@ class InputExtrinsic extends React.PureComponent<Props, State> {
           className='small'
           label={labelSection}
           onChange={this.onSectionChange}
-          type={type}
+          options={optionsSection}
           value={value}
           withLabel={withLabel}
         />
@@ -66,6 +84,7 @@ class InputExtrinsic extends React.PureComponent<Props, State> {
           className='large'
           label={labelMethod}
           onChange={this.onKeyChange}
+          options={optionsMethod}
           value={value}
           type={type}
           withLabel={withLabel}
@@ -74,26 +93,32 @@ class InputExtrinsic extends React.PureComponent<Props, State> {
     );
   }
 
-  onKeyChange = (value: Extrinsic): void => {
+  onKeyChange = (value: Extrinsic$Method): void => {
     const { onChange } = this.props;
+    const { value: { name, section } } = this.state;
+
+    if (value.section === section && value.name === name) {
+      return;
+    }
 
     this.setState({ value }, () =>
       onChange(value)
     );
   }
 
-  onSectionChange = (section: ExtrinsicSectionName): void => {
-    const { isPrivate = false } = this.props;
+  onSectionChange = (newSection: Extrinsic$Sections): void => {
+    const { type, value: { section } } = this.state;
 
-    if (this.state.value.section === section) {
+    if (newSection === section) {
       return;
     }
 
-    const type = isPrivate ? 'private' : 'public';
-    const options = methodOptions(section, type);
-    const value = map[section].methods[type][options[0].value];
+    const optionsMethod = methodOptions(newSection, type);
+    const value = map[newSection][type][optionsMethod[0].value];
 
-    this.onKeyChange(value);
+    this.setState({ optionsMethod }, () =>
+      this.onKeyChange(value)
+    );
   }
 }
 
diff --git a/packages/ui-app/src/InputExtrinsic/options/method.js b/packages/ui-app/src/InputExtrinsic/options/method.js
index 0c81a38241..14c7644c6e 100644
--- a/packages/ui-app/src/InputExtrinsic/options/method.js
+++ b/packages/ui-app/src/InputExtrinsic/options/method.js
@@ -3,21 +3,21 @@
 // of the ISC license. See the LICENSE file for details.
 // @flow
 
-import type { ExtrinsicSectionName } from '@polkadot/extrinsics/types';
+import type { Extrinsic$Sections } from '@polkadot/extrinsics/types';
+import type { DropdownOptions } from '../types';
 
 import React from 'react';
 
 import map from '@polkadot/extrinsics-substrate';
 
-// flowlint-next-line unclear-type:off
-export default function createOptions (sectionName: any, type: 'private' | 'public'): Array<any> {
-  const section = map[(sectionName: ExtrinsicSectionName)];
+export default function createOptions (sectionName: Extrinsic$Sections, type: 'private' | 'public'): DropdownOptions {
+  const section = map[sectionName];
 
   if (!section) {
     return [];
   }
 
-  const methods = section.methods[type];
+  const methods = section[type];
 
   return Object
     .keys(methods)
diff --git a/packages/ui-app/src/InputExtrinsic/options/section.js b/packages/ui-app/src/InputExtrinsic/options/section.js
index dfeb3daa94..94a88a55cd 100644
--- a/packages/ui-app/src/InputExtrinsic/options/section.js
+++ b/packages/ui-app/src/InputExtrinsic/options/section.js
@@ -3,15 +3,16 @@
 // of the ISC license. See the LICENSE file for details.
 // @flow
 
+import type { DropdownOptions } from '../types';
+
 import map from '@polkadot/extrinsics-substrate';
 
-// flowlint-next-line unclear-type:off
-export default function createOptions (type: 'private' | 'public'): Array<any> {
+export default function createOptions (type: 'private' | 'public'): DropdownOptions {
   return Object
     .keys(map)
     .sort()
     .filter((name) => {
-      const methods = map[name].methods[type];
+      const methods = map[name][type];
 
       return Object.keys(methods).length !== 0;
     })
diff --git a/packages/ui-app/src/InputExtrinsic/types.js b/packages/ui-app/src/InputExtrinsic/types.js
new file mode 100644
index 0000000000..eae6af8dc5
--- /dev/null
+++ b/packages/ui-app/src/InputExtrinsic/types.js
@@ -0,0 +1,13 @@
+// Copyright 2017-2018 Jaco Greeff
+// This software may be modified and distributed under the terms
+// of the ISC license. See the LICENSE file for details.
+// @flow
+
+export type DropdownOption = {
+  className?: string,
+  key?: string,
+  text: string | React$Node,
+  value: string
+};
+
+export type DropdownOptions = Array<DropdownOption>;
diff --git a/packages/ui-app/src/InputRpc/SelectMethod.js b/packages/ui-app/src/InputRpc/SelectMethod.js
index ec9dcdf47f..d8a1842c74 100644
--- a/packages/ui-app/src/InputRpc/SelectMethod.js
+++ b/packages/ui-app/src/InputRpc/SelectMethod.js
@@ -3,7 +3,8 @@
 // of the ISC license. See the LICENSE file for details.
 // @flow
 
-import type { InterfaceMethodDefinition } from '@polkadot/jsonrpc/types';
+import type { Interface$Method, Interface$Sections } from '@polkadot/jsonrpc/types';
+import type { DropdownOptions } from '../InputExtrinsic/types';
 import type { I18nProps } from '../types';
 
 import React from 'react';
@@ -17,10 +18,9 @@ import translate from '../translate';
 type Props = I18nProps & {
   isError?: boolean,
   label?: string,
-  onChange: (value: InterfaceMethodDefinition) => void,
-  // flowlint-next-line unclear-type:off
-  options: Array<any>,
-  value: InterfaceMethodDefinition,
+  onChange: (value: Interface$Method) => void,
+  options: DropdownOptions,
+  value: Interface$Method,
   withLabel?: boolean
 };
 
@@ -29,8 +29,7 @@ function SelectMethod ({ className, isError, label = '', onChange, options, styl
     return null;
   }
 
-  const transform = (name: string): InterfaceMethodDefinition =>
-    // $FlowFixMe ... string to type :(
+  const transform = (name: Interface$Sections): Interface$Method =>
     map[section].methods[name];
 
   return (
diff --git a/packages/ui-app/src/InputRpc/SelectSection.js b/packages/ui-app/src/InputRpc/SelectSection.js
index bf110b29e3..1178222090 100644
--- a/packages/ui-app/src/InputRpc/SelectSection.js
+++ b/packages/ui-app/src/InputRpc/SelectSection.js
@@ -3,7 +3,8 @@
 // of the ISC license. See the LICENSE file for details.
 // @flow
 
-import type { InterfaceMethodDefinition, InterfaceTypes } from '@polkadot/jsonrpc/types';
+import type { Interface$Method, Interface$Sections } from '@polkadot/jsonrpc/types';
+import type { DropdownOptions } from '../InputExtrinsic/types';
 import type { I18nProps } from '../types';
 
 import React from 'react';
@@ -13,13 +14,12 @@ import classes from '../util/classes';
 import translate from '../translate';
 
 type Props = I18nProps & {
-  defaultValue?: InterfaceTypes,
+  defaultValue?: Interface$Sections,
   isError?: boolean,
   label: string,
-  onChange: (value: InterfaceTypes) => void,
-  // flowlint-next-line unclear-type:off
-  options: Array<any>,
-  value: InterfaceMethodDefinition,
+  onChange: (value: Interface$Sections) => void,
+  options: DropdownOptions,
+  value: Interface$Method,
   withLabel?: boolean
 };
 
diff --git a/packages/ui-app/src/InputRpc/index.js b/packages/ui-app/src/InputRpc/index.js
index 54b4a68608..81ed0cf862 100644
--- a/packages/ui-app/src/InputRpc/index.js
+++ b/packages/ui-app/src/InputRpc/index.js
@@ -5,7 +5,8 @@
 
 // TODO: We have a lot shared between this and InputExtrinsic & InputStorage
 
-import type { InterfaceMethodDefinition, InterfaceTypes } from '@polkadot/jsonrpc/types';
+import type { Interface$Method, Interface$Sections } from '@polkadot/jsonrpc/types';
+import type { DropdownOptions } from '../InputExtrinsic/types';
 import type { I18nProps } from '../types';
 
 import '../InputExtrinsic/InputExtrinsic.css';
@@ -22,20 +23,18 @@ import methodOptions from './options/method';
 import sectionOptions from './options/section';
 
 type Props = I18nProps & {
-  defaultValue: InterfaceMethodDefinition,
+  defaultValue: Interface$Method,
   isError?: boolean,
   labelMethod?: string,
   labelSection?: string,
-  onChange: (value: InterfaceMethodDefinition) => void,
+  onChange: (value: Interface$Method) => void,
   withLabel?: boolean
 };
 
 type State = {
-  // flowlint-next-line unclear-type:off
-  optionsMethod: Array<any>,
-  // flowlint-next-line unclear-type:off
-  optionsSection: Array<any>,
-  value: InterfaceMethodDefinition
+  optionsMethod: DropdownOptions,
+  optionsSection: DropdownOptions,
+  value: Interface$Method
 };
 
 class InputRpc extends React.PureComponent<Props, State> {
@@ -82,7 +81,7 @@ class InputRpc extends React.PureComponent<Props, State> {
     );
   }
 
-  onMethodChange = (value: InterfaceMethodDefinition): void => {
+  onMethodChange = (value: Interface$Method): void => {
     const { onChange } = this.props;
     const { value: { name, section } } = this.state;
 
@@ -95,7 +94,7 @@ class InputRpc extends React.PureComponent<Props, State> {
     );
   }
 
-  onSectionChange = (newSection: InterfaceTypes): void => {
+  onSectionChange = (newSection: Interface$Sections): void => {
     const { value: { section } } = this.state;
 
     if (newSection === section) {
diff --git a/packages/ui-app/src/InputRpc/options/method.js b/packages/ui-app/src/InputRpc/options/method.js
index ca0d198986..233eae5c4a 100644
--- a/packages/ui-app/src/InputRpc/options/method.js
+++ b/packages/ui-app/src/InputRpc/options/method.js
@@ -3,15 +3,15 @@
 // of the ISC license. See the LICENSE file for details.
 // @flow
 
-import type { InterfaceTypes } from '@polkadot/jsonrpc/types';
+import type { Interface$Sections } from '@polkadot/jsonrpc/types';
+import type { DropdownOptions } from '../../InputExtrinsic/types';
 
 import React from 'react';
 
 import map from '@polkadot/jsonrpc';
 
-// flowlint-next-line unclear-type:off
-export default function createOptions (sectionName: any): Array<any> {
-  const section = map[(sectionName: InterfaceTypes)];
+export default function createOptions (sectionName: Interface$Sections): DropdownOptions {
+  const section = map[sectionName];
 
   if (!section) {
     return [];
diff --git a/packages/ui-app/src/InputRpc/options/section.js b/packages/ui-app/src/InputRpc/options/section.js
index 7048d17cb9..f0a8585268 100644
--- a/packages/ui-app/src/InputRpc/options/section.js
+++ b/packages/ui-app/src/InputRpc/options/section.js
@@ -3,10 +3,11 @@
 // of the ISC license. See the LICENSE file for details.
 // @flow
 
+import type { DropdownOptions } from '../../InputExtrinsic/types';
+
 import map from '@polkadot/jsonrpc';
 
-// flowlint-next-line unclear-type:off
-export default function createOptions (): Array<any> {
+export default function createOptions (): DropdownOptions {
   return Object
     .keys(map)
     .sort()
diff --git a/packages/ui-app/src/InputStorage/SelectKey.js b/packages/ui-app/src/InputStorage/SelectKey.js
index 3154f73e1a..23f89dcc7b 100644
--- a/packages/ui-app/src/InputStorage/SelectKey.js
+++ b/packages/ui-app/src/InputStorage/SelectKey.js
@@ -3,7 +3,8 @@
 // of the ISC license. See the LICENSE file for details.
 // @flow
 
-import type { StorageDef$Key } from '@polkadot/storage/types';
+import type { Storage$Key } from '@polkadot/storage/types';
+import type { DropdownOptions } from '../InputExtrinsic/types';
 import type { I18nProps } from '../types';
 
 import React from 'react';
@@ -13,26 +14,23 @@ import map from '@polkadot/storage-substrate';
 import Dropdown from '../Dropdown';
 import classes from '../util/classes';
 import translate from '../translate';
-import createOptions from './options/key';
 
 type Props = I18nProps & {
   isError?: boolean,
   label?: string,
-  onChange: (value: StorageDef$Key) => void,
-  value: StorageDef$Key,
+  onChange: (value: Storage$Key) => void,
+  options: DropdownOptions,
+  value: Storage$Key,
   withLabel?: boolean
 };
 
-function SelectKey ({ className, isError, label = '', onChange, style, t, value: { name, section }, withLabel }: Props): React$Node {
-  // $FlowFixMe string vs ...
-  if (!map[section]) {
+function SelectKey ({ className, isError, label = '', onChange, options, style, t, value: { name, section }, withLabel }: Props): React$Node {
+  if (!options.length) {
     return null;
   }
 
-  const keys = map[section].keys;
-  const transform = (name: string): StorageDef$Key =>
-    keys[name];
-  const options = createOptions(section);
+  const transform = (name: string): Storage$Key =>
+    map[section].keys[name];
 
   return (
     <Dropdown
diff --git a/packages/ui-app/src/InputStorage/SelectSection.js b/packages/ui-app/src/InputStorage/SelectSection.js
index 08d9591f8c..38f408796e 100644
--- a/packages/ui-app/src/InputStorage/SelectSection.js
+++ b/packages/ui-app/src/InputStorage/SelectSection.js
@@ -3,7 +3,8 @@
 // of the ISC license. See the LICENSE file for details.
 // @flow
 
-import type { StorageDef$Key, StateDb$SectionNames } from '@polkadot/storage/types';
+import type { Storage$Key, Storage$Sections } from '@polkadot/storage/types';
+import type { DropdownOptions } from '../InputExtrinsic/types';
 import type { I18nProps } from '../types';
 
 import React from 'react';
@@ -11,20 +12,18 @@ import React from 'react';
 import Dropdown from '../Dropdown';
 import classes from '../util/classes';
 import translate from '../translate';
-import createOptions from './options/section';
 
 type Props = I18nProps & {
-  defaultValue?: StateDb$SectionNames,
+  defaultValue?: Storage$Sections,
   isError?: boolean,
   label: string,
-  onChange: (value: StateDb$SectionNames) => void,
-  value: StorageDef$Key,
+  onChange: (value: Storage$Sections) => void,
+  options: DropdownOptions,
+  value: Storage$Key,
   withLabel?: boolean
 };
 
-const options = createOptions();
-
-function SelectSection ({ className, defaultValue, isError, label, onChange, style, t, value: { section }, withLabel }: Props): React$Node {
+function SelectSection ({ className, defaultValue, isError, label, onChange, options, style, t, value: { section }, withLabel }: Props): React$Node {
   return (
     <Dropdown
       className={classes('ui--DropdownLinked-Sections', className)}
diff --git a/packages/ui-app/src/InputStorage/index.js b/packages/ui-app/src/InputStorage/index.js
index 73e599407c..fac04ee641 100644
--- a/packages/ui-app/src/InputStorage/index.js
+++ b/packages/ui-app/src/InputStorage/index.js
@@ -5,7 +5,8 @@
 
 // TODO: We have a lot shared between this and InputExtrinsic
 
-import type { StorageDef$Key, StateDb$SectionNames } from '@polkadot/storage/types';
+import type { Storage$Key, Storage$Sections } from '@polkadot/storage/types';
+import type { DropdownOptions } from '../InputExtrinsic/types';
 import type { I18nProps } from '../types';
 
 import '../InputExtrinsic/InputExtrinsic.css';
@@ -19,18 +20,21 @@ import translate from '../translate';
 import SelectKey from './SelectKey';
 import SelectSection from './SelectSection';
 import keyOptions from './options/key';
+import sectionOptions from './options/section';
 
 type Props = I18nProps & {
-  defaultValue: StorageDef$Key,
+  defaultValue: Storage$Key,
   isError?: boolean,
   labelMethod?: string,
   labelSection?: string,
-  onChange: (value: StorageDef$Key) => void,
+  onChange: (value: Storage$Key) => void,
   withLabel?: boolean
 };
 
 type State = {
-  value: StorageDef$Key
+  optionsMethod: DropdownOptions,
+  optionsSection: DropdownOptions,
+  value: Storage$Key
 };
 
 class InputStorage extends React.PureComponent<Props, State> {
@@ -39,14 +43,18 @@ class InputStorage extends React.PureComponent<Props, State> {
   constructor (props: Props) {
     super(props);
 
+    const { section } = this.props.defaultValue;
+
     this.state = {
+      optionsMethod: keyOptions(section),
+      optionsSection: sectionOptions(),
       value: this.props.defaultValue
     };
   }
 
   render (): React$Node {
     const { className, labelMethod, labelSection, style, withLabel } = this.props;
-    const { value } = this.state;
+    const { optionsMethod, optionsSection, value } = this.state;
 
     return (
       <div
@@ -57,6 +65,7 @@ class InputStorage extends React.PureComponent<Props, State> {
           className='small'
           label={labelSection}
           onChange={this.onSectionChange}
+          options={optionsSection}
           value={value}
           withLabel={withLabel}
         />
@@ -64,6 +73,7 @@ class InputStorage extends React.PureComponent<Props, State> {
           className='large'
           label={labelMethod}
           onChange={this.onKeyChange}
+          options={optionsMethod}
           value={value}
           withLabel={withLabel}
         />
@@ -71,23 +81,32 @@ class InputStorage extends React.PureComponent<Props, State> {
     );
   }
 
-  onKeyChange = (value: StorageDef$Key): void => {
+  onKeyChange = (value: Storage$Key): void => {
     const { onChange } = this.props;
+    const { value: { name, section } } = this.state;
+
+    if (value.section === section && value.name === name) {
+      return;
+    }
 
     this.setState({ value }, () =>
       onChange(value)
     );
   }
 
-  onSectionChange = (section: StateDb$SectionNames): void => {
-    if (this.state.value.section === section) {
+  onSectionChange = (newSection: Storage$Sections): void => {
+    const { value: { section } } = this.state;
+
+    if (newSection === section) {
       return;
     }
 
-    const options = keyOptions(section);
-    const value = map[section].keys[options[0].value];
+    const optionsMethod = keyOptions(newSection);
+    const value = map[newSection].keys[optionsMethod[0].value];
 
-    this.onKeyChange(value);
+    this.setState({ optionsMethod }, () =>
+      this.onKeyChange(value)
+    );
   }
 }
 
diff --git a/packages/ui-app/src/InputStorage/options/key.js b/packages/ui-app/src/InputStorage/options/key.js
index 1389920c24..515fe26e6d 100644
--- a/packages/ui-app/src/InputStorage/options/key.js
+++ b/packages/ui-app/src/InputStorage/options/key.js
@@ -3,15 +3,15 @@
 // of the ISC license. See the LICENSE file for details.
 // @flow
 
-import type { StateDb$SectionNames } from '@polkadot/storage/types';
+import type { Storage$Sections } from '@polkadot/storage/types';
+import type { DropdownOptions } from '../../InputExtrinsic/types';
 
 import React from 'react';
 
 import map from '@polkadot/storage-substrate';
 
-// flowlint-next-line unclear-type:off
-export default function createOptions (sectionName: any): Array<any> {
-  const section = map[(sectionName: StateDb$SectionNames)];
+export default function createOptions (sectionName: Storage$Sections): DropdownOptions {
+  const section = map[sectionName];
 
   if (!section) {
     return [];
diff --git a/packages/ui-app/src/InputStorage/options/section.js b/packages/ui-app/src/InputStorage/options/section.js
index bdde312f01..23fe8334fd 100644
--- a/packages/ui-app/src/InputStorage/options/section.js
+++ b/packages/ui-app/src/InputStorage/options/section.js
@@ -3,10 +3,11 @@
 // of the ISC license. See the LICENSE file for details.
 // @flow
 
+import type { DropdownOptions } from '../../InputExtrinsic/types';
+
 import map from '@polkadot/storage-substrate';
 
-// flowlint-next-line unclear-type:off
-export default function createOptions (): Array<any> {
+export default function createOptions (): DropdownOptions {
   return Object
     .keys(map)
     .sort()
diff --git a/packages/ui-app/src/Params/Param/String.js b/packages/ui-app/src/Params/Param/String.js
new file mode 100644
index 0000000000..c5a62b8618
--- /dev/null
+++ b/packages/ui-app/src/Params/Param/String.js
@@ -0,0 +1,46 @@
+// Copyright 2017-2018 Jaco Greeff
+// This software may be modified and distributed under the terms
+// of the ISC license. See the LICENSE file for details.
+// @flow
+
+import type { Props } from '../types';
+
+import React from 'react';
+
+import Input from '../../Input';
+import Bare from './Bare';
+
+export default class StringParam extends React.PureComponent<Props> {
+  render (): React$Node {
+    const { className, isDisabled, isError, label, style, withLabel } = this.props;
+
+    return (
+      <Bare
+        className={className}
+        style={style}
+      >
+        <Input
+          className='full'
+          isDisabled={isDisabled}
+          isError={isError}
+          label={label}
+          onChange={this.onChange}
+          placeholder='<any string>'
+          type='text'
+          withLabel={withLabel}
+        />
+      </Bare>
+    );
+  }
+
+  onChange = (value: string): void => {
+    const { onChange } = this.props;
+
+    const isValid = value.length !== 0;
+
+    onChange({
+      isValid,
+      value
+    });
+  };
+}
diff --git a/packages/ui-app/src/Params/Param/findComponent.js b/packages/ui-app/src/Params/Param/findComponent.js
index 9b770cf8cf..3c33e3f978 100644
--- a/packages/ui-app/src/Params/Param/findComponent.js
+++ b/packages/ui-app/src/Params/Param/findComponent.js
@@ -13,6 +13,7 @@ import Bytes from './Bytes';
 import Code from './Code';
 import Hash from './Hash';
 import KeyValue from './KeyValue';
+import StringParam from './String';
 import Unknown from './Unknown';
 import VoteThreshold from './VoteThreshold';
 
@@ -34,7 +35,7 @@ const components: ComponentMap = {
   'ReferendumIndex': Amount,
   'SessionKey': Amount,
   'Signature': Hash,
-  'String': Unknown,
+  'String': StringParam,
   'Timestamp': Amount,
   'u32': Amount,
   'u64': Amount,
diff --git a/packages/ui-app/src/Params/index.js b/packages/ui-app/src/Params/index.js
index 237bed7960..4f36443a5f 100644
--- a/packages/ui-app/src/Params/index.js
+++ b/packages/ui-app/src/Params/index.js
@@ -17,13 +17,15 @@ import Param from './Param';
 import createValues from './values';
 
 type Props = I18nProps & {
-  item: Section$Item,
+  // flowlint-next-line unclear-type:off
+  item: Section$Item<any>,
   onChange: (value: RawParams) => void,
   overrides?: ComponentMap
 };
 
 type State = {
-  item: Section$Item,
+  // flowlint-next-line unclear-type:off
+  item: Section$Item<any>,
   handlers: Array<RawParam$OnChange>,
   onChangeParam: (at: number, next: RawParam) => void,
   values: RawParams
diff --git a/packages/ui-app/src/Params/valueToText.js b/packages/ui-app/src/Params/valueToText.js
index 07f9083b05..f6ae3bb836 100644
--- a/packages/ui-app/src/Params/valueToText.js
+++ b/packages/ui-app/src/Params/valueToText.js
@@ -9,7 +9,7 @@ import type { Param$Types, Param$Type$Array } from '@polkadot/params/types';
 // import IdentityIcon from '@polkadot/ui-react/IdentityIcon';
 import numberFormat from '@polkadot/ui-react-rx/util/numberFormat';
 import addressEncode from '@polkadot/util-keyring/address/encode';
-import u8aToHexShort from '@polkadot/util/u8a/toHexShort';
+import u8aToHex from '@polkadot/util/u8a/toHex';
 import isBn from '@polkadot/util/is/bn';
 import isU8a from '@polkadot/util/is/u8a';
 
@@ -47,7 +47,7 @@ function valueToText (type: Param$Types, value: any): string {
   }
 
   if (isU8a(value)) {
-    return u8aToHexShort((value: Uint8Array), 256);
+    return u8aToHex((value: Uint8Array), 256);
   }
 
   if (isBn(value)) {
diff --git a/packages/ui-keyring/package.json b/packages/ui-keyring/package.json
index cb97c010c3..907ddb9e90 100644
--- a/packages/ui-keyring/package.json
+++ b/packages/ui-keyring/package.json
@@ -12,9 +12,9 @@
   },
   "dependencies": {
     "@babel/runtime": "^7.0.0-beta.47",
-    "@polkadot/ui-react": "^0.13.4",
-    "@polkadot/util": "^0.21.3",
-    "@polkadot/util-keyring": "^0.21.3",
+    "@polkadot/ui-react": "^0.13.6",
+    "@polkadot/util": "^0.22.1",
+    "@polkadot/util-keyring": "^0.22.1",
     "store": "^2.0.12"
   },
   "peerDependencies": {
diff --git a/packages/ui-signer/package.json b/packages/ui-signer/package.json
index 23639ad412..ec0463e684 100644
--- a/packages/ui-signer/package.json
+++ b/packages/ui-signer/package.json
@@ -12,10 +12,10 @@
   },
   "dependencies": {
     "@babel/runtime": "^7.0.0-beta.47",
-    "@polkadot/extrinsics": "^0.15.8",
+    "@polkadot/extrinsics": "^0.16.5",
     "@polkadot/ui-app": "^0.6.4",
     "@polkadot/ui-keyring": "^0.6.4",
-    "@polkadot/util": "^0.21.3"
+    "@polkadot/util": "^0.22.1"
   },
   "peerDependencies": {
     "react": "^16.3.1",
diff --git a/packages/ui-signer/src/Extrinsic.js b/packages/ui-signer/src/Extrinsic.js
index 19c42d5ad9..406bc6dc9a 100644
--- a/packages/ui-signer/src/Extrinsic.js
+++ b/packages/ui-signer/src/Extrinsic.js
@@ -13,7 +13,7 @@ import { Trans } from 'react-i18next';
 import extrinsics from '@polkadot/extrinsics-substrate';
 import Modal from '@polkadot/ui-app/Modal';
 import IdentityIcon from '@polkadot/ui-react/IdentityIcon';
-import u8aToHexShort from '@polkadot/util/u8a/toHexShort';
+import u8aToHex from '@polkadot/util/u8a/toHex';
 import addressEncode from '@polkadot/util-keyring/address/encode';
 
 import translate from './translate';
@@ -28,7 +28,7 @@ function findExtrinsic (sectionId: number, methodId: number): { method: ?string,
     extrinsics[section].index[0] === sectionId
   );
   const methods = section
-    ? extrinsics[section].methods.public
+    ? extrinsics[section].public
     : {};
   const method = Object.keys(methods).find((method) =>
     methods[method].index[1] === methodId
@@ -70,7 +70,7 @@ function Extrinsic ({ children, className, style, t, value: { nonce = new BN(0),
             })}
           </p>
           <p className='code'>
-            {u8aToHexShort(value, 512)}
+            {u8aToHex(value, 512)}
           </p>
         </div>
         <IdentityIcon
diff --git a/packages/ui-signer/src/submit.js b/packages/ui-signer/src/submit.js
index 7473f51fad..0e08ea2fe2 100644
--- a/packages/ui-signer/src/submit.js
+++ b/packages/ui-signer/src/submit.js
@@ -4,31 +4,26 @@
 // @flow
 
 import type { RxApiInterface } from '@polkadot/api-rx/types';
-import type { InterfaceMethodDefinition } from '@polkadot/jsonrpc/types';
+import type { Interface$Method } from '@polkadot/jsonrpc/types';
 import type { Param$Values } from '@polkadot/params/types';
 import type { QueueTx$Result } from './types';
 
-export default function submitMessage (api: RxApiInterface, params: Array<Param$Values>, rpc: InterfaceMethodDefinition): Promise<QueueTx$Result> {
-  const { name, section } = rpc;
+export default async function submitMessage (api: RxApiInterface, params: Array<Param$Values>, { name, section }: Interface$Method): Promise<QueueTx$Result> {
+  try {
+    const result = await api[section][name].apply(null, params).toPromise();
 
-  // $FlowFixMe This should not be an issue...
-  return api[section][name]
-    .apply(null, params)
-    .toPromise()
-    .then((result) => {
-      console.log(`${section}.${name}: result ::`, result);
+    console.log(`${section}.${name}: result ::`, result);
 
-      return {
-        result,
-        status: 'sent'
-      };
-    })
-    .catch((error) => {
-      console.error(error);
+    return {
+      result,
+      status: 'sent'
+    };
+  } catch (error) {
+    console.error(error);
 
-      return {
-        error,
-        status: 'error'
-      };
-    });
+    return {
+      error,
+      status: 'error'
+    };
+  }
 }
diff --git a/packages/ui-signer/src/types.js b/packages/ui-signer/src/types.js
index ca9c64751a..dd7fc25d08 100644
--- a/packages/ui-signer/src/types.js
+++ b/packages/ui-signer/src/types.js
@@ -4,7 +4,7 @@
 // @flow
 
 import type BN from 'bn.js';
-import type { InterfaceMethodDefinition } from '@polkadot/jsonrpc/types';
+import type { Interface$Method } from '@polkadot/jsonrpc/types';
 import type { Param$Values } from '@polkadot/params/types';
 
 export type EncodedMessage = {
@@ -23,7 +23,7 @@ export type QueueTx$Result = {
 }
 
 export type QueueTx$Base = EncodedMessage & {
-  rpc: InterfaceMethodDefinition,
+  rpc: Interface$Method,
   nonce: BN,
   publicKey?: Uint8Array | null
 };
diff --git a/yarn.lock b/yarn.lock
index 8d29317a13..12264aa74b 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -719,47 +719,47 @@
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/@nodelib/fs.stat/-/fs.stat-1.0.2.tgz#d056b68999769728a1cff8d643bc59eb6f0be436"
 
-"@polkadot/api-format@^0.12.4":
-  version "0.12.4"
-  resolved "https://registry.yarnpkg.com/@polkadot/api-format/-/api-format-0.12.4.tgz#9ef5d227a98e713aef0ad8cdd8cd4f2804d346fb"
+"@polkadot/api-format@^0.12.6":
+  version "0.12.6"
+  resolved "https://registry.yarnpkg.com/@polkadot/api-format/-/api-format-0.12.6.tgz#9fd8e0268c5b6bb3fb5f2d4c1e66158d07ad3af2"
   dependencies:
     "@babel/runtime" "^7.0.0-beta.47"
-    "@polkadot/jsonrpc" "^0.15.8"
-    "@polkadot/primitives-json" "^0.15.8"
-    "@polkadot/util" "^0.21.3"
+    "@polkadot/jsonrpc" "^0.16.5"
+    "@polkadot/primitives-json" "^0.16.5"
+    "@polkadot/util" "^0.22.1"
 
-"@polkadot/api-provider@^0.12.4":
-  version "0.12.4"
-  resolved "https://registry.yarnpkg.com/@polkadot/api-provider/-/api-provider-0.12.4.tgz#947cf3720a06a808d21dd5717d2bf3f3a7d37138"
+"@polkadot/api-provider@^0.12.6":
+  version "0.12.6"
+  resolved "https://registry.yarnpkg.com/@polkadot/api-provider/-/api-provider-0.12.6.tgz#5f9b043e247742d4edc0cfdcb4a7ab4051a452a9"
   dependencies:
     "@babel/runtime" "^7.0.0-beta.47"
-    "@polkadot/storage-substrate" "^0.15.8"
-    "@polkadot/util" "^0.21.3"
-    "@polkadot/util-crypto" "^0.21.3"
-    "@polkadot/util-keyring" "^0.21.3"
+    "@polkadot/storage-substrate" "^0.16.5"
+    "@polkadot/util" "^0.22.1"
+    "@polkadot/util-crypto" "^0.22.1"
+    "@polkadot/util-keyring" "^0.22.1"
     eventemitter3 "^2.0.3"
     isomorphic-fetch "^2.2.1"
     websocket "^1.0.25"
 
-"@polkadot/api-rx@^0.12.4":
-  version "0.12.4"
-  resolved "https://registry.yarnpkg.com/@polkadot/api-rx/-/api-rx-0.12.4.tgz#2114d29620570ebc35215a5bd967bfaa1a5ad7c9"
+"@polkadot/api-rx@^0.12.6":
+  version "0.12.6"
+  resolved "https://registry.yarnpkg.com/@polkadot/api-rx/-/api-rx-0.12.6.tgz#951ef4daa78415c4ac13c7fdbd86612d4eae987a"
   dependencies:
     "@babel/runtime" "^7.0.0-beta.47"
-    "@polkadot/api" "^0.12.4"
-    "@polkadot/api-provider" "^0.12.4"
+    "@polkadot/api" "^0.12.6"
+    "@polkadot/api-provider" "^0.12.6"
     rxjs "^5.5.10"
 
-"@polkadot/api@^0.12.4":
-  version "0.12.4"
-  resolved "https://registry.yarnpkg.com/@polkadot/api/-/api-0.12.4.tgz#591912964574f9b4775cf33473adfb48ef339d3a"
+"@polkadot/api@^0.12.6":
+  version "0.12.6"
+  resolved "https://registry.yarnpkg.com/@polkadot/api/-/api-0.12.6.tgz#eacdd9797806954e54b7a41a80e5d4e9f8cedd34"
   dependencies:
     "@babel/runtime" "^7.0.0-beta.47"
-    "@polkadot/api-format" "^0.12.4"
-    "@polkadot/api-provider" "^0.12.4"
-    "@polkadot/jsonrpc" "^0.15.8"
-    "@polkadot/params" "^0.15.8"
-    "@polkadot/util" "^0.21.3"
+    "@polkadot/api-format" "^0.12.6"
+    "@polkadot/api-provider" "^0.12.6"
+    "@polkadot/jsonrpc" "^0.16.5"
+    "@polkadot/params" "^0.16.5"
+    "@polkadot/util" "^0.22.1"
 
 "@polkadot/dev-react@^0.19.10":
   version "0.19.10"
@@ -816,181 +816,181 @@
     mkdirp "^0.5.1"
     rimraf "^2.6.2"
 
-"@polkadot/extrinsics-codec@^0.15.8":
-  version "0.15.8"
-  resolved "https://registry.yarnpkg.com/@polkadot/extrinsics-codec/-/extrinsics-codec-0.15.8.tgz#925ab3facb9efb1c03a098f54dc466a8072ca3fe"
+"@polkadot/extrinsics-codec@^0.16.5":
+  version "0.16.5"
+  resolved "https://registry.yarnpkg.com/@polkadot/extrinsics-codec/-/extrinsics-codec-0.16.5.tgz#06c798c12b6a55d2d62863d796a63a8cf3032773"
   dependencies:
     "@babel/runtime" "^7.0.0-beta.47"
-    "@polkadot/extrinsics" "^0.15.8"
-    "@polkadot/params" "^0.15.8"
-    "@polkadot/util" "^0.21.3"
+    "@polkadot/extrinsics" "^0.16.5"
+    "@polkadot/params" "^0.16.5"
+    "@polkadot/util" "^0.22.1"
     bn.js "^4.11.8"
 
-"@polkadot/extrinsics-substrate@^0.15.8":
-  version "0.15.8"
-  resolved "https://registry.yarnpkg.com/@polkadot/extrinsics-substrate/-/extrinsics-substrate-0.15.8.tgz#8c36f8bd84711a5bb41f40d7da00c831cf1b1542"
+"@polkadot/extrinsics-substrate@^0.16.5":
+  version "0.16.5"
+  resolved "https://registry.yarnpkg.com/@polkadot/extrinsics-substrate/-/extrinsics-substrate-0.16.5.tgz#d68078ba7071898a057356b5b7d98e285b169257"
   dependencies:
     "@babel/runtime" "^7.0.0-beta.47"
-    "@polkadot/extrinsics" "^0.15.8"
+    "@polkadot/extrinsics" "^0.16.5"
 
-"@polkadot/extrinsics@^0.15.8":
-  version "0.15.8"
-  resolved "https://registry.yarnpkg.com/@polkadot/extrinsics/-/extrinsics-0.15.8.tgz#98c3776fe1b2e560489511312a6c56a17b76fbfc"
+"@polkadot/extrinsics@^0.16.5":
+  version "0.16.5"
+  resolved "https://registry.yarnpkg.com/@polkadot/extrinsics/-/extrinsics-0.16.5.tgz#e4c8590f36728215c0c6bc7338c49dd957ce8841"
   dependencies:
     "@babel/runtime" "^7.0.0-beta.47"
-    "@polkadot/params" "^0.15.8"
-    "@polkadot/primitives" "^0.15.8"
-    "@polkadot/util" "^0.21.3"
+    "@polkadot/params" "^0.16.5"
+    "@polkadot/primitives" "^0.16.5"
+    "@polkadot/util" "^0.22.1"
 
-"@polkadot/jsonrpc@^0.15.8":
-  version "0.15.8"
-  resolved "https://registry.yarnpkg.com/@polkadot/jsonrpc/-/jsonrpc-0.15.8.tgz#54ff1123eeb763f53023b16116cf5762d1d8d4e4"
+"@polkadot/jsonrpc@^0.16.5":
+  version "0.16.5"
+  resolved "https://registry.yarnpkg.com/@polkadot/jsonrpc/-/jsonrpc-0.16.5.tgz#448e976d7017672ab107a179c3ca34bb93ac0d8f"
   dependencies:
-    "@polkadot/params" "^0.15.8"
+    "@polkadot/params" "^0.16.5"
     babel-runtime "^6.26.0"
 
-"@polkadot/params@^0.15.8":
-  version "0.15.8"
-  resolved "https://registry.yarnpkg.com/@polkadot/params/-/params-0.15.8.tgz#b5b04dfd7f95ae3bfd38a360eece3d87aa1cc3a2"
+"@polkadot/params@^0.16.5":
+  version "0.16.5"
+  resolved "https://registry.yarnpkg.com/@polkadot/params/-/params-0.16.5.tgz#535b73132ff14181782b05b38df5d645ac27db6e"
   dependencies:
     "@babel/runtime" "^7.0.0-beta.47"
-    "@polkadot/extrinsics" "^0.15.8"
-    "@polkadot/extrinsics-substrate" "^0.15.8"
-    "@polkadot/primitives" "^0.15.8"
-    "@polkadot/util" "^0.21.3"
+    "@polkadot/extrinsics" "^0.16.5"
+    "@polkadot/extrinsics-substrate" "^0.16.5"
+    "@polkadot/primitives" "^0.16.5"
+    "@polkadot/util" "^0.22.1"
 
-"@polkadot/primitives-builder@^0.15.8":
-  version "0.15.8"
-  resolved "https://registry.yarnpkg.com/@polkadot/primitives-builder/-/primitives-builder-0.15.8.tgz#6ce1db576234b62886ba29555ee366e85e14a4be"
+"@polkadot/primitives-builder@^0.16.5":
+  version "0.16.5"
+  resolved "https://registry.yarnpkg.com/@polkadot/primitives-builder/-/primitives-builder-0.16.5.tgz#b9794e0f45a19f4a38945f8f7ab2c35002dbedae"
   dependencies:
     "@babel/runtime" "^7.0.0-beta.47"
-    "@polkadot/primitives" "^0.15.8"
-    "@polkadot/primitives-codec" "^0.15.8"
-    "@polkadot/util" "^0.21.3"
-    "@polkadot/util-crypto" "^0.21.3"
-    "@polkadot/util-triehash" "^0.21.3"
+    "@polkadot/primitives" "^0.16.5"
+    "@polkadot/primitives-codec" "^0.16.5"
+    "@polkadot/util" "^0.22.1"
+    "@polkadot/util-crypto" "^0.22.1"
+    "@polkadot/util-triehash" "^0.22.1"
 
-"@polkadot/primitives-codec@^0.15.8":
-  version "0.15.8"
-  resolved "https://registry.yarnpkg.com/@polkadot/primitives-codec/-/primitives-codec-0.15.8.tgz#1d57d253f149a7262222458f75a83601aa313bd0"
+"@polkadot/primitives-codec@^0.16.5":
+  version "0.16.5"
+  resolved "https://registry.yarnpkg.com/@polkadot/primitives-codec/-/primitives-codec-0.16.5.tgz#93beb37a886f11c2d32d222b9ffebcb8f39c2de8"
   dependencies:
     "@babel/runtime" "^7.0.0-beta.47"
-    "@polkadot/primitives" "^0.15.8"
-    "@polkadot/primitives-builder" "^0.15.8"
-    "@polkadot/primitives-rlp" "^0.15.8"
-    "@polkadot/util" "^0.21.3"
-    "@polkadot/util-keyring" "^0.21.3"
+    "@polkadot/primitives" "^0.16.5"
+    "@polkadot/primitives-builder" "^0.16.5"
+    "@polkadot/primitives-rlp" "^0.16.5"
+    "@polkadot/util" "^0.22.1"
+    "@polkadot/util-keyring" "^0.22.1"
 
-"@polkadot/primitives-json@^0.15.8":
-  version "0.15.8"
-  resolved "https://registry.yarnpkg.com/@polkadot/primitives-json/-/primitives-json-0.15.8.tgz#ee1035ac744fe5a373152c8bc67ebf2be7643f12"
+"@polkadot/primitives-json@^0.16.5":
+  version "0.16.5"
+  resolved "https://registry.yarnpkg.com/@polkadot/primitives-json/-/primitives-json-0.16.5.tgz#a4b79054e93302fd31537dfcf1fb6b58518de0fa"
   dependencies:
     "@babel/runtime" "^7.0.0-beta.47"
-    "@polkadot/primitives" "^0.15.8"
-    "@polkadot/primitives-builder" "^0.15.8"
-    "@polkadot/util" "^0.21.3"
+    "@polkadot/primitives" "^0.16.5"
+    "@polkadot/primitives-builder" "^0.16.5"
+    "@polkadot/util" "^0.22.1"
 
-"@polkadot/primitives-rlp@^0.15.8":
-  version "0.15.8"
-  resolved "https://registry.yarnpkg.com/@polkadot/primitives-rlp/-/primitives-rlp-0.15.8.tgz#7b6583d5026e69be48d6e029978656590c0ad4e6"
+"@polkadot/primitives-rlp@^0.16.5":
+  version "0.16.5"
+  resolved "https://registry.yarnpkg.com/@polkadot/primitives-rlp/-/primitives-rlp-0.16.5.tgz#1faae2336eee345b59985adf2a00587eb69a37ee"
   dependencies:
     "@babel/runtime" "^7.0.0-beta.47"
-    "@polkadot/primitives" "^0.15.8"
-    "@polkadot/primitives-builder" "^0.15.8"
-    "@polkadot/util" "^0.21.3"
-    "@polkadot/util-crypto" "^0.21.3"
+    "@polkadot/primitives" "^0.16.5"
+    "@polkadot/primitives-builder" "^0.16.5"
+    "@polkadot/util" "^0.22.1"
+    "@polkadot/util-crypto" "^0.22.1"
 
-"@polkadot/primitives@^0.15.8":
-  version "0.15.8"
-  resolved "https://registry.yarnpkg.com/@polkadot/primitives/-/primitives-0.15.8.tgz#897e6dc947ab143da3eb05fd72cc874b9bd69304"
+"@polkadot/primitives@^0.16.5":
+  version "0.16.5"
+  resolved "https://registry.yarnpkg.com/@polkadot/primitives/-/primitives-0.16.5.tgz#f1806d1c0e549d8790bd02293ee71aae9cf8adb5"
   dependencies:
     "@babel/runtime" "^7.0.0-beta.47"
-    "@polkadot/util" "^0.21.3"
+    "@polkadot/util" "^0.22.1"
 
-"@polkadot/storage-substrate@^0.15.8":
-  version "0.15.8"
-  resolved "https://registry.yarnpkg.com/@polkadot/storage-substrate/-/storage-substrate-0.15.8.tgz#1ef3442b369b1b537455a287e3d2f808ac2bba3f"
+"@polkadot/storage-substrate@^0.16.5":
+  version "0.16.5"
+  resolved "https://registry.yarnpkg.com/@polkadot/storage-substrate/-/storage-substrate-0.16.5.tgz#79d7d3c6fc6d1aa6fa3453a17133a7af8d2ed622"
   dependencies:
     "@babel/runtime" "^7.0.0-beta.47"
-    "@polkadot/storage" "^0.15.8"
-    "@polkadot/util" "^0.21.3"
+    "@polkadot/storage" "^0.16.5"
+    "@polkadot/util" "^0.22.1"
 
-"@polkadot/storage@^0.15.8":
-  version "0.15.8"
-  resolved "https://registry.yarnpkg.com/@polkadot/storage/-/storage-0.15.8.tgz#a437074277eff576b468f921149fca612379a1df"
+"@polkadot/storage@^0.16.5":
+  version "0.16.5"
+  resolved "https://registry.yarnpkg.com/@polkadot/storage/-/storage-0.16.5.tgz#98be9f2e0feaaee7a8ecf7f9c85cc3ee42f551b4"
   dependencies:
     "@babel/runtime" "^7.0.0-beta.47"
-    "@polkadot/params" "^0.15.8"
-    "@polkadot/primitives" "^0.15.8"
-    "@polkadot/util" "^0.21.3"
+    "@polkadot/params" "^0.16.5"
+    "@polkadot/primitives" "^0.16.5"
+    "@polkadot/util" "^0.22.1"
 
-"@polkadot/ui-identicon@^0.13.4":
-  version "0.13.4"
-  resolved "https://registry.yarnpkg.com/@polkadot/ui-identicon/-/ui-identicon-0.13.4.tgz#c2b854825e2ece811163514dac7a733dfc887039"
+"@polkadot/ui-identicon@^0.13.6":
+  version "0.13.6"
+  resolved "https://registry.yarnpkg.com/@polkadot/ui-identicon/-/ui-identicon-0.13.6.tgz#0c74fc3ff5e57025424becf40c4159fa0ce5a5c2"
   dependencies:
     "@babel/runtime" "^7.0.0-beta.47"
     color "^3.0.0"
 
-"@polkadot/ui-react-rx@^0.13.4":
-  version "0.13.4"
-  resolved "https://registry.yarnpkg.com/@polkadot/ui-react-rx/-/ui-react-rx-0.13.4.tgz#23a01099b50619b761dcfbafa910e59e75b03b94"
+"@polkadot/ui-react-rx@^0.13.6":
+  version "0.13.6"
+  resolved "https://registry.yarnpkg.com/@polkadot/ui-react-rx/-/ui-react-rx-0.13.6.tgz#125463300b26301f6c1cf7988b92366567fd30d8"
   dependencies:
     "@babel/runtime" "^7.0.0-beta.47"
-    "@polkadot/api-provider" "^0.12.4"
-    "@polkadot/api-rx" "^0.12.4"
-    "@polkadot/jsonrpc" "^0.15.8"
-    "@polkadot/params" "^0.15.8"
-    "@polkadot/primitives" "^0.15.8"
-    "@polkadot/storage" "^0.15.8"
-    "@polkadot/storage-substrate" "^0.15.8"
-    "@polkadot/util" "^0.21.3"
+    "@polkadot/api-provider" "^0.12.6"
+    "@polkadot/api-rx" "^0.12.6"
+    "@polkadot/jsonrpc" "^0.16.5"
+    "@polkadot/params" "^0.16.5"
+    "@polkadot/primitives" "^0.16.5"
+    "@polkadot/storage" "^0.16.5"
+    "@polkadot/storage-substrate" "^0.16.5"
+    "@polkadot/util" "^0.22.1"
 
-"@polkadot/ui-react@^0.13.4":
-  version "0.13.4"
-  resolved "https://registry.yarnpkg.com/@polkadot/ui-react/-/ui-react-0.13.4.tgz#4e60851400d738129585f965929095f5cdedd0cc"
+"@polkadot/ui-react@^0.13.6":
+  version "0.13.6"
+  resolved "https://registry.yarnpkg.com/@polkadot/ui-react/-/ui-react-0.13.6.tgz#11603bf2e68d93eac00cc3b5c8de535a93273c30"
   dependencies:
     "@babel/runtime" "^7.0.0-beta.47"
-    "@polkadot/ui-identicon" "^0.13.4"
+    "@polkadot/ui-identicon" "^0.13.6"
 
-"@polkadot/util-crypto@^0.21.3":
-  version "0.21.3"
-  resolved "https://registry.yarnpkg.com/@polkadot/util-crypto/-/util-crypto-0.21.3.tgz#96711c0c8f95b98bcffe140086d277fa1ef94676"
+"@polkadot/util-crypto@^0.22.1":
+  version "0.22.1"
+  resolved "https://registry.yarnpkg.com/@polkadot/util-crypto/-/util-crypto-0.22.1.tgz#c48c2ba52d6e92cf433a0db229e92a157c4a6448"
   dependencies:
     "@babel/runtime" "^7.0.0-beta.47"
-    "@polkadot/util" "^0.21.3"
+    "@polkadot/util" "^0.22.1"
     blakejs "^1.1.0"
     js-sha3 "^0.7.0"
     tweetnacl "^1.0.0"
     xxhashjs "^0.2.2"
 
-"@polkadot/util-keyring@^0.21.3":
-  version "0.21.3"
-  resolved "https://registry.yarnpkg.com/@polkadot/util-keyring/-/util-keyring-0.21.3.tgz#4b52134505af3cb4a0280412a5c595d4b6f7f9ec"
+"@polkadot/util-keyring@^0.22.1":
+  version "0.22.1"
+  resolved "https://registry.yarnpkg.com/@polkadot/util-keyring/-/util-keyring-0.22.1.tgz#c1bc9b9ba705be17e66a5292b107cd2e1e0678c8"
   dependencies:
     "@babel/runtime" "^7.0.0-beta.47"
-    "@polkadot/util" "^0.21.3"
-    "@polkadot/util-crypto" "^0.21.3"
+    "@polkadot/util" "^0.22.1"
+    "@polkadot/util-crypto" "^0.22.1"
     bs58 "^4.0.1"
 
-"@polkadot/util-rlp@^0.21.3":
-  version "0.21.3"
-  resolved "https://registry.yarnpkg.com/@polkadot/util-rlp/-/util-rlp-0.21.3.tgz#388c96e733087505072d6cbe329bb3ec46922d46"
+"@polkadot/util-rlp@^0.22.1":
+  version "0.22.1"
+  resolved "https://registry.yarnpkg.com/@polkadot/util-rlp/-/util-rlp-0.22.1.tgz#58d517af4430ecc9bc9cbb3802ec77511b2e56be"
   dependencies:
     "@babel/runtime" "^7.0.0-beta.47"
-    "@polkadot/util" "^0.21.3"
+    "@polkadot/util" "^0.22.1"
 
-"@polkadot/util-triehash@^0.21.3":
-  version "0.21.3"
-  resolved "https://registry.yarnpkg.com/@polkadot/util-triehash/-/util-triehash-0.21.3.tgz#e86d374dc60ddce81b219130ffcb0611d6a59ffe"
+"@polkadot/util-triehash@^0.22.1":
+  version "0.22.1"
+  resolved "https://registry.yarnpkg.com/@polkadot/util-triehash/-/util-triehash-0.22.1.tgz#5eeb430e0a77a18ef931193f72fe88d5de56a00c"
   dependencies:
     "@babel/runtime" "^7.0.0-beta.47"
-    "@polkadot/util" "^0.21.3"
-    "@polkadot/util-crypto" "^0.21.3"
-    "@polkadot/util-rlp" "^0.21.3"
+    "@polkadot/util" "^0.22.1"
+    "@polkadot/util-crypto" "^0.22.1"
+    "@polkadot/util-rlp" "^0.22.1"
 
-"@polkadot/util@^0.21.3":
-  version "0.21.3"
-  resolved "https://registry.yarnpkg.com/@polkadot/util/-/util-0.21.3.tgz#8b1151a7b80156aefe1ac4a4a81642119a1b6bed"
+"@polkadot/util@^0.22.1":
+  version "0.22.1"
+  resolved "https://registry.yarnpkg.com/@polkadot/util/-/util-0.22.1.tgz#54966d2ffdee5a2c358c06b6c642e0d17c42442f"
   dependencies:
     "@babel/runtime" "^7.0.0-beta.47"
     bn.js "^4.11.8"