more emitted events

2020-10-28 14:40:00 +01:00 · 2020-10-28 14:40:00 +01:00 · e289bc2033
parent 35a2671ab0
commit e289bc2033
32 changed files with 14142 additions and 28 deletions
--- a/status-pay/contracts/StatusPay.sol
+++ b/status-pay/contracts/StatusPay.sol
@ -11,7 +11,9 @@ import "./BlockConsumer.sol";
 import "./EVMUtils.sol";

 contract StatusPay is BlockConsumer {
-  event NewPayment(address to, uint256 amount);
+  event NewPayment(address from, address to, uint256 amount);
+  event TopUp(address account, uint256 amount);
+  event Withdraw(address account, uint256 amount);

  struct Payment {
    uint256 blockNumber;
@ -70,22 +72,35 @@ contract StatusPay is BlockConsumer {
    ));
  }

-  function totalSupply() external view returns (uint256) {
+  function totalSupply() public view returns (uint256) {
    return token.balanceOf(address(this));
  }

-  function balanceOf(address _account) external view returns (uint256) {
-    Account storage account = accounts[_account];
+  function balanceOf(address _account) public view returns (uint256) {
+    (, Account memory account) = _resolveAccount(_account);
+    return account.balance;
+  }
+
+  function resolveAccount(address _addressOrOwnerOrKeycard) public view returns (address) {
+    (address addr, ) = _resolveAccount(_addressOrOwnerOrKeycard);
+    return addr;
+  }
+
+  function _resolveAccount(address _addressOrOwnerOrKeycard) internal view returns (address, Account storage) {
+    address accountAddress = _addressOrOwnerOrKeycard;
+    Account storage account = accounts[accountAddress];

    if (!account.exists) {
-      account = accounts[owners[_account]];
+      accountAddress = owners[_addressOrOwnerOrKeycard];
+      account = accounts[accountAddress];

      if (!account.exists) {
-        account = accounts[keycards[_account]];
+        accountAddress = keycards[_addressOrOwnerOrKeycard];
+        account = accounts[accountAddress];
      }
    }

-    return account.balance;
+    return (accountAddress, account);
  }

  function name() public view returns (string memory) {
@ -180,15 +195,18 @@ contract StatusPay is BlockConsumer {
    require(token.transferFrom(msg.sender, address(this), _amount), "transfer failed");

    topped.balance += _amount;
+    emit TopUp(_id, _amount);
  }

  function withdraw(uint256 _amount) public {
-    Account storage exiting = accounts[owners[msg.sender]];
+    address acc = owners[msg.sender];
+    Account storage exiting = accounts[acc];
    require(exiting.exists, "account does not exist");
    require(exiting.balance >= _amount, "not enough balance");

    exiting.balance -= _amount;
    require(token.transfer(msg.sender, _amount), "transfer failed");
+    emit Withdraw(acc, _amount);
  }

  function unlockAccount(Unlock memory _unlock, bytes memory _signature) public {
@ -211,22 +229,11 @@ contract StatusPay is BlockConsumer {

  function requestPayment(Payment memory _payment, bytes memory _signature) public {
    address signer = ECDSA.recover(EVMUtils.eip712Hash(DOMAIN_SEPARATOR, hashPayment(_payment)), _signature);
-    Account storage payer = accounts[keycards[signer]];
+    (address payerAddress, Account storage payer) = _resolveAccount(signer);
+    require(payer.exists, "payer account not found");

-    // allow direct payment without Keycard from owner
-    if (!payer.exists) {
-      payer = accounts[owners[signer]];
-      require(payer.exists, "no account for this Keycard");
-    }
-
-    // check that the payee exists
-    Account storage payee = accounts[_payment.to];
-
-    // allow payment through owner address
-    if (!payee.exists) {
-      payee = accounts[owners[_payment.to]];
-      require(payee.exists, "payee account does not exist");
-    }
+    (address payeeAddress, Account storage payee) = _resolveAccount(_payment.to);
+    require(payee.exists, "payee account does not exist");

    // check that _payment.amount is not greater than the maxTxValue for this currency
    require(_payment.amount <= payer.maxTxAmount, "amount not allowed");
@ -245,7 +252,7 @@ contract StatusPay is BlockConsumer {

    // set new baseline block for checks
    payer.lastUsedBlock = blockNumber;
-    emit NewPayment(_payment.to, _payment.amount);
+    emit NewPayment(payerAddress, payeeAddress, _payment.amount);
  }

  function hashPayment(Payment memory _payment) internal pure returns (bytes32) {
--- a/status-pay/dapps/simple-wallet/.gitignore
+++ b/status-pay/dapps/simple-wallet/.gitignore
@ -0,0 +1 @@
+src/config.ts
--- a/status-pay/dapps/simple-wallet/package.json
+++ b/status-pay/dapps/simple-wallet/package.json
@ -0,0 +1,51 @@
+{
+  "name": "simple-wallet",
+  "version": "0.0.1",
+  "description": "",
+  "scripts": {
+    "start": "react-scripts start",
+    "build": "react-scripts build",
+    "test": "react-scripts test",
+    "eject": "react-scripts eject"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "MIT",
+  "eslintConfig": {
+    "extends": "react-app"
+  },
+  "dependencies": {
+    "@material-ui/core": "^4.7.0",
+    "@material-ui/icons": "^4.5.1",
+    "@material-ui/styles": "^4.6.0",
+    "qrcode-generator-ts": "^0.0.4",
+    "react": "^16.12.0",
+    "react-dom": "^16.12.0",
+    "react-redux": "^7.1.1",
+    "redux": "^4.0.4",
+    "redux-thunk": "^2.3.0",
+    "typeface-roboto": "^0.0.75",
+    "web3": "^1.2.4"
+  },
+  "devDependencies": {
+    "@types/react": "^16.9.2",
+    "@types/react-dom": "^16.9.0",
+    "@types/react-redux": "^7.1.2",
+    "react-scripts": "3.2.0",
+    "source-map-loader": "^0.2.4",
+    "ts-loader": "^6.1.2",
+    "typescript": "^3.6.3"
+  },
+  "browserslist": {
+    "production": [
+      ">0.2%",
+      "not dead",
+      "not op_mini all"
+    ],
+    "development": [
+      "last 1 chrome version",
+      "last 1 firefox version",
+      "last 1 safari version"
+    ]
+  }
+}
--- a/status-pay/dapps/simple-wallet/public/index.html
+++ b/status-pay/dapps/simple-wallet/public/index.html
@ -0,0 +1,10 @@
+<html>
+  <head>
+    <meta charset="utf-8"/>
+    <title>Keycard Simple Wallet</title>
+    <meta name="viewport" content="initial-scale=1, maximum-scale=1">
+  </head>
+  <body>
+    <div id="root"></div>
+  </body>
+</html>
--- a/status-pay/dapps/simple-wallet/src/actions/blocks.ts
+++ b/status-pay/dapps/simple-wallet/src/actions/blocks.ts
@ -0,0 +1,53 @@
+import { Dispatch } from 'redux';
+import { config } from '../global';
+import { RootState } from '../reducers';
+
+export const BLOCK_LOADING = "BLOCK_LOADING";
+export interface BlockLoadingAction {
+  type: typeof BLOCK_LOADING
+  number: number
+}
+
+export const BLOCK_LOADED = "BLOCK_LOADED";
+export interface BlockLoadedAction {
+  type: typeof BLOCK_LOADED
+  number: number
+  timestamp: number
+}
+
+export type BlocksActions =
+  BlockLoadingAction |
+  BlockLoadedAction;
+
+export const blockLoaded = (number: number, timestamp: number): BlockLoadedAction => ({
+  type: BLOCK_LOADED,
+  number,
+  timestamp,
+});
+
+export const loadingBlock = (number: number): BlockLoadingAction => ({
+  type: BLOCK_LOADING,
+  number,
+});
+
+export const loadBlock = (number: number) => {
+  return (dispatch: Dispatch, getState: () => RootState) => {
+    if (getState().blocks[number] !== undefined) {
+      // block already loaded
+      return;
+    }
+
+    dispatch(loadingBlock(number))
+
+    config.web3!.eth.getBlock(number).then(b => {
+      let timestamp;
+      if (typeof b.timestamp === "string") {
+        timestamp = parseInt(b.timestamp);
+      } else {
+        timestamp = b.timestamp;
+      }
+
+      dispatch(blockLoaded(b.number, timestamp));
+    })
+  };
+}
--- a/status-pay/dapps/simple-wallet/src/actions/transactions.ts
+++ b/status-pay/dapps/simple-wallet/src/actions/transactions.ts
@ -0,0 +1,161 @@
+import { Dispatch } from 'redux';
+import { RootState } from '../reducers';
+import { Contract } from 'web3-eth-contract';
+import Web3 from 'web3';
+import { TransactionReceipt } from 'web3-core';
+import { loadWalletBalance } from './wallet';
+import { loadBlock } from './blocks';
+import { addPadding } from "../utils";
+
+export const TXS_LOADING = "TXS_LOADING";
+export interface TxsLoadingAction {
+  type: typeof TXS_LOADING
+}
+
+export const TXS_LOADED = "TXS_LOADED";
+export interface TxsLoadedAction {
+  type: typeof TXS_LOADED
+}
+
+export const TXS_TRANSACTION_DISCOVERED = "TXS_TRANSACTION_DISCOVERED";
+export interface TxsTransactionDiscoveredAction {
+  type: typeof TXS_TRANSACTION_DISCOVERED
+  event: string
+  pending: boolean
+  id: string
+  blockNumber: number
+  transactionHash: string
+  from: string | undefined
+  to: string | undefined
+  value: string
+}
+
+export const TXS_TRANSACTION_CONFIRMED = "TXS_TRANSACTION_CONFIRMED";
+export interface TxsTransactionConfirmedAction {
+  type: typeof TXS_TRANSACTION_CONFIRMED
+  transactionHash: string
+}
+
+export type TxsActions =
+  TxsLoadingAction |
+  TxsLoadedAction |
+  TxsTransactionDiscoveredAction |
+  TxsTransactionConfirmedAction;
+
+export const transactionDiscovered = (event: string, id: string, blockNumber: number, transactionHash: string, pending: boolean, from: string, to: string | undefined, value: string): TxsTransactionDiscoveredAction => ({
+  type: TXS_TRANSACTION_DISCOVERED,
+  event,
+  id,
+  blockNumber,
+  transactionHash,
+  pending,
+  from,
+  to,
+  value,
+});
+
+export const loadingTransactions = (): TxsLoadingAction => ({
+  type: TXS_LOADING,
+});
+
+export const transactionsLoaded = (): TxsLoadedAction => ({
+  type: TXS_LOADED,
+});
+
+export const transactionConfirmed = (transactionHash: string): TxsTransactionConfirmedAction => ({
+  type: TXS_TRANSACTION_CONFIRMED,
+  transactionHash,
+});
+
+export const loadTransactions = (web3: Web3, statusPay: Contract) => {
+  return (dispatch: Dispatch, getState: () => RootState) => {
+    const state = getState();
+    const walletAddress = state.wallet.walletAddress;
+    if (walletAddress === undefined) {
+      return;
+    }
+
+    web3.eth.getBlockNumber().then((blockNumber: number) => {
+      dispatch<any>(getPastTransactions(web3, statusPay, walletAddress, blockNumber, "to"))
+      dispatch<any>(getPastTransactions(web3, statusPay, walletAddress, blockNumber, "from"))
+
+      dispatch<any>(subscribeToTransactions(web3, statusPay, walletAddress, blockNumber, "to"))
+      dispatch<any>(subscribeToTransactions(web3, statusPay, walletAddress, blockNumber, "from"))
+    });
+  };
+}
+
+type ToOrFrom = "to" | "from";
+
+const getPastTransactions = (web3: Web3, statusPay: Contract, walletAddress: string, fromBlock: number, toOrFrom: ToOrFrom) => {
+  return (dispatch: Dispatch, getState: () => RootState) => {
+    const paddedWalletAddress = addPadding(64, walletAddress);
+    const eventType = toOrFrom === "to" ? "TopUp" : "NewPayment";
+    const topics: (null | string)[] = [null, null, null];
+
+    switch(toOrFrom) {
+      case "from":
+        topics[1] = paddedWalletAddress;
+        break;
+      case "to":
+        topics[2] = paddedWalletAddress;
+        break;
+    }
+
+    const options = {
+      fromBlock: 0,
+      toBlock: "latest",
+      topics: topics,
+    };
+
+    dispatch(loadingTransactions());
+    statusPay.getPastEvents("Transfer", options).then((events: any) => {
+      events.forEach((event: any) => {
+        const values = event.returnValues;
+        dispatch<any>(loadBlock(event.blockNumber));
+        dispatch(transactionDiscovered(eventType, event.id, event.blockNumber, event.transactionHash, false, values.from, walletAddress, values.value));
+      });
+      dispatch(transactionsLoaded());
+    });
+  };
+};
+
+const subscribeToTransactions = (web3: Web3, erc20: Contract, walletAddress: string, fromBlock: number, toOrFrom: ToOrFrom) => {
+  return (dispatch: Dispatch, getState: () => RootState) => {
+    const options = {
+      fromBlock: fromBlock,
+      filter: {
+        [toOrFrom]: walletAddress,
+      }
+    };
+
+    const eventType = toOrFrom === "to" ? "TopUp" : "NewPayment";
+
+    erc20.events.Transfer(options).on('data', (event: any) => {
+      const values = event.returnValues;
+      const pending = event.blockHash === null;
+      dispatch(transactionDiscovered(eventType, event.id, event.blockNumber, event.transactionHash, pending, values.from, walletAddress, values.value));
+      dispatch<any>(loadWalletBalance(web3, undefined));
+      if (pending) {
+        watchPendingTransaction(web3, dispatch, walletAddress, event.transactionHash);
+      }
+    });
+  };
+};
+
+export const watchPendingTransaction = (web3: Web3, dispatch: Dispatch, walletAddress: string | undefined, transactionHash: string) => {
+  web3.eth.getTransactionReceipt(transactionHash).then((tx: TransactionReceipt) => {
+    if (tx.status) {
+      dispatch(transactionConfirmed(transactionHash));
+      if (walletAddress !== undefined) {
+        dispatch<any>(loadWalletBalance(web3, undefined));
+      }
+      return;
+    }
+
+    window.setTimeout(() => watchPendingTransaction(web3, dispatch, walletAddress, transactionHash), 5000)
+  }).catch((error: string) => {
+    //FIXME: handle error
+    console.log("error", error)
+  });
+}
--- a/status-pay/dapps/simple-wallet/src/actions/wallet.ts
+++ b/status-pay/dapps/simple-wallet/src/actions/wallet.ts
@ -0,0 +1,288 @@
+import { Dispatch } from 'redux';
+import { RootState } from '../reducers';
+import Web3 from 'web3';
+import { abi as StatusPayABI } from '../../../../build/contracts/StatusPay.json';
+import { isEmptyAddress } from '../utils';
+import { loadTransactions } from './transactions';
+import { Contract } from 'web3-eth-contract';
+import { statusPayAddress } from "../config";
+
+export const ERR_WALLET_NOT_FOUND = "ERR_WALLET_NOT_FOUND";
+export interface ErrWalletNotFound {
+  type: typeof ERR_WALLET_NOT_FOUND
+  keycardAddress: string
+}
+
+export const ERR_ERC20_NOT_SET = "ERR_ERC20_NOT_SET";
+export interface ErrERC20NotSet {
+  type: typeof ERR_ERC20_NOT_SET
+}
+
+export const ERR_GETTING_ERC20_SYMBOL = "ERR_GETTING_ERC20_SYMBOL";
+export interface ErrGettingERC20Symbol {
+  type: typeof ERR_GETTING_ERC20_SYMBOL
+  erc20Address: string
+  error: string
+}
+
+export const ERR_LOADING_BALANCE = "ERR_LOADING_BALANCE";
+export interface ErrLoadingBalance {
+  type: typeof ERR_LOADING_BALANCE
+  erc20Address: string
+  walletAddress: string
+  error: string
+}
+
+export type WalletErrors =
+  ErrWalletNotFound |
+  ErrERC20NotSet |
+  ErrGettingERC20Symbol |
+  ErrLoadingBalance;
+
+export const WALLET_KEYCARD_ADDRESS_NOT_SPECIFIED = "WALLET_KEYCARD_ADDRESS_NOT_SPECIFIED";
+export interface WalletKeycardAddressNotSpecifiedAction {
+  type: typeof WALLET_KEYCARD_ADDRESS_NOT_SPECIFIED
+}
+
+export const WALLET_INVALID_KEYCARD_ADDRESS = "WALLET_INVALID_KEYCARD_ADDRESS";
+export interface WalletInvalidKeycardAddressAction {
+  type: typeof WALLET_INVALID_KEYCARD_ADDRESS
+}
+
+export const WALLET_FACTORY_LOADING_ERC20_ADDRESS = "WALLET_FACTORY_LOADING_ERC20_ADDRESS";
+export interface WalletFactoryLoadingERC20AddressAction {
+  type: typeof WALLET_FACTORY_LOADING_ERC20_ADDRESS
+}
+
+export const WALLET_FACTORY_ERC20_ADDRESS_LOADED = "WALLET_FACTORY_ERC20_ADDRESS_LOADED";
+export interface WalletFactoryERC20AddressLoadedAction {
+  type: typeof WALLET_FACTORY_ERC20_ADDRESS_LOADED
+  address: string
+}
+
+export const WALLET_FACTORY_LOADING_ERC20_SYMBOL = "WALLET_FACTORY_LOADING_ERC20_SYMBOL";
+export interface WalletFactoryLoadingERC20SymbolAction {
+  type: typeof WALLET_FACTORY_LOADING_ERC20_SYMBOL
+}
+
+export const WALLET_FACTORY_ERC20_SYMBOL_LOADED = "WALLET_FACTORY_ERC20_SYMBOL_LOADED";
+export interface WalletFactoryERC20SymbolLoadedAction {
+  type: typeof WALLET_FACTORY_ERC20_SYMBOL_LOADED
+  symbol: string
+}
+
+export const WALLET_FACTORY_LOADING_WALLET_ADDRESS = "WALLET_FACTORY_LOADING_WALLET_ADDRESS";
+export interface WalletFactoryLoadingWalletAddressAction {
+  type: typeof WALLET_FACTORY_LOADING_WALLET_ADDRESS
+  keycardAddress: string
+}
+
+
+export const WALLET_FACTORY_KEYCARD_NOT_FOUND = "WALLET_FACTORY_KEYCARD_NOT_FOUND";
+export interface WalletFactoryKeycardNotFoundAction {
+  type: typeof WALLET_FACTORY_KEYCARD_NOT_FOUND
+  keycardAddress: string
+}
+
+export const WALLET_FACTORY_WALLET_ADDRESS_LOADED = "WALLET_FACTORY_WALLET_ADDRESS_LOADED";
+export interface WalletFactoryWalletAddressLoadedAction {
+  type: typeof WALLET_FACTORY_WALLET_ADDRESS_LOADED
+  keycardAddress: string
+  walletAddress: string
+}
+
+export const WALLET_LOADING_BALANCE = "WALLET_LOADING_BALANCE";
+export interface WalletLoadingBalanceAction {
+  type: typeof WALLET_LOADING_BALANCE
+  address: string
+}
+
+export const WALLET_BALANCE_LOADED = "WALLET_BALANCE_LOADED";
+export interface WalletBalanceLoadedAction {
+  type: typeof WALLET_BALANCE_LOADED
+  balance: string
+  availableBalance: string
+}
+
+export const WALLET_TOGGLE_QRCODE = "WALLET_TOGGLE_QRCODE";
+export interface WalletToggleQRCodeAction {
+  type: typeof WALLET_TOGGLE_QRCODE
+  open: boolean
+}
+
+export type WalletActions =
+  WalletKeycardAddressNotSpecifiedAction |
+  WalletInvalidKeycardAddressAction |
+  WalletFactoryLoadingERC20AddressAction |
+  WalletFactoryERC20AddressLoadedAction |
+  WalletFactoryLoadingERC20SymbolAction |
+  WalletFactoryERC20SymbolLoadedAction |
+  WalletFactoryLoadingWalletAddressAction |
+  WalletFactoryWalletAddressLoadedAction |
+  WalletFactoryKeycardNotFoundAction |
+  WalletLoadingBalanceAction |
+  WalletBalanceLoadedAction |
+  WalletToggleQRCodeAction;
+
+export const keycardAddressNotSpecified = (): WalletKeycardAddressNotSpecifiedAction => ({
+  type: WALLET_KEYCARD_ADDRESS_NOT_SPECIFIED,
+});
+
+export const invalidKeycardAddress = (): WalletInvalidKeycardAddressAction => ({
+  type: WALLET_INVALID_KEYCARD_ADDRESS,
+});
+
+export const loadingERC20Address = (): WalletFactoryLoadingERC20AddressAction => ({
+  type: WALLET_FACTORY_LOADING_ERC20_ADDRESS,
+});
+
+export const erc20AddressLoaded = (address: string): WalletFactoryERC20AddressLoadedAction => ({
+  type: WALLET_FACTORY_ERC20_ADDRESS_LOADED,
+  address,
+});
+
+export const loadingERC20Symbol = (): WalletFactoryLoadingERC20SymbolAction => ({
+  type: WALLET_FACTORY_LOADING_ERC20_SYMBOL,
+});
+
+export const erc20SymbolLoaded = (symbol: string): WalletFactoryERC20SymbolLoadedAction => ({
+  type: WALLET_FACTORY_ERC20_SYMBOL_LOADED,
+  symbol,
+});
+
+export const loadingWalletAddress = (keycardAddress: string): WalletFactoryLoadingWalletAddressAction => ({
+  type: WALLET_FACTORY_LOADING_WALLET_ADDRESS,
+  keycardAddress,
+});
+
+export const walletAddressLoaded = (keycardAddress: string, walletAddress: string): WalletFactoryWalletAddressLoadedAction => ({
+  type: WALLET_FACTORY_WALLET_ADDRESS_LOADED,
+  keycardAddress,
+  walletAddress,
+});
+
+export const keycardNotFound = (keycardAddress: string): WalletFactoryKeycardNotFoundAction => ({
+  type: WALLET_FACTORY_KEYCARD_NOT_FOUND,
+  keycardAddress,
+});
+
+export const loadingWalletBalance = (address: string): WalletLoadingBalanceAction => ({
+  type: WALLET_LOADING_BALANCE,
+  address,
+});
+
+export const balanceLoaded = (balance: string, availableBalance: string): WalletBalanceLoadedAction => ({
+  type: WALLET_BALANCE_LOADED,
+  balance,
+  availableBalance,
+});
+
+export const showWalletQRCode = (): WalletToggleQRCodeAction => ({
+  type: WALLET_TOGGLE_QRCODE,
+  open: true,
+});
+
+export const hideWalletQRCode = (): WalletToggleQRCodeAction => ({
+  type: WALLET_TOGGLE_QRCODE,
+  open: false,
+});
+
+export const loadWallet = async (web3: Web3, dispatch: Dispatch, getState: () => RootState) => {
+  const params = new URLSearchParams(window.location.search);
+  const keycardAddress = params.get("address");
+
+  if (keycardAddress === null) {
+    dispatch(keycardAddressNotSpecified());
+    return
+  }
+
+  if (!web3.utils.isAddress(keycardAddress)) {
+    dispatch(invalidKeycardAddress());
+    return;
+  }
+
+  const statusPay = new web3.eth.Contract(StatusPayABI as any, statusPayAddress);
+
+  dispatch<any>(loadWalletAddress(web3, statusPay, keycardAddress))
+    .then(() => dispatch<any>(loadERC20(web3, statusPay)))
+    .then(() => dispatch<any>(loadERC20Symbol(web3, statusPay)))
+    .then(() => dispatch<any>(loadWalletBalance(web3, statusPay)))
+    .then(() => dispatch<any>(loadTransactions(web3, statusPay)))
+    .catch((err: string) => {
+      console.error("global catch", err)
+      return;
+    })
+}
+
+const loadWalletAddress = (web3: Web3, statusPay: Contract, keycardAddress: string) => {
+  return async (dispatch: Dispatch) => {
+    dispatch(loadingWalletAddress(keycardAddress));
+    return statusPay.methods.keycards(keycardAddress).call().then((address: string) => {
+     if (isEmptyAddress(address)) {
+       dispatch(keycardNotFound(address));
+       throw({
+         type: ERR_WALLET_NOT_FOUND,
+         keycardAddress: keycardAddress,
+       });
+     }
+
+     dispatch(walletAddressLoaded(keycardAddress, address));
+    }).catch((err: any) => {
+      console.error("err", err)
+      throw(err)
+    });
+  }
+}
+
+const loadERC20 = (web3: Web3, statusPay: Contract) => {
+  return async (dispatch: Dispatch) => {
+    return statusPay.methods.token().call().then((address: string) => {
+      if (isEmptyAddress(address)) {
+        throw({ type: ERR_ERC20_NOT_SET });
+      }
+
+      dispatch(erc20AddressLoaded(address));
+    }).catch((err: any) => {
+      console.error("err", err)
+      throw(err);
+    });
+  }
+}
+
+const loadERC20Symbol = (web3: Web3, statusPay: Contract) => {
+  return async (dispatch: Dispatch, getState: () => RootState) => {
+    dispatch(loadingERC20Symbol());
+    return statusPay.methods.symbol().call().then((symbol: string) => {
+      dispatch(erc20SymbolLoaded(symbol));
+    }).catch((err: string) => {
+      console.error("err", err)
+      throw({
+        type: ERR_GETTING_ERC20_SYMBOL,
+        erc20Address: getState().wallet.erc20Address!,
+        error: err,
+      });
+    });
+  }
+}
+
+export const loadWalletBalance = (web3: Web3, _statusPay: Contract | undefined) => {
+  return async (dispatch: Dispatch, getState: () => RootState) => {
+    const state = getState();
+    const address = state.wallet.walletAddress!;
+    const statusPay = _statusPay !== undefined ? _statusPay : new web3.eth.Contract(StatusPayABI as any, statusPayAddress);
+
+    dispatch(loadingWalletBalance(address));
+
+    return statusPay.methods.balanceOf(address).call().then((balance: string) => {
+      dispatch(balanceLoaded(balance, balance));
+    }).catch((err: string) => {
+      console.error("err", err)
+      throw({
+        type: ERR_LOADING_BALANCE,
+        erc20Address: state.wallet.erc20Address!,
+        walletAddress: address,
+        error: err,
+      });
+    });
+  }
+}
--- a/status-pay/dapps/simple-wallet/src/actions/web3.ts
+++ b/status-pay/dapps/simple-wallet/src/actions/web3.ts
@ -0,0 +1,120 @@
+import Web3 from 'web3';
+import { config } from '../global';
+import {
+  Dispatch,
+} from 'redux';
+import { RootState } from '../reducers';
+import { loadWallet } from './wallet';
+
+export const VALID_NETWORK_NAME = "Ropsten";
+export const VALID_NETWORK_ID = 3;
+// export const VALID_NETWORK_NAME = "Goerli";
+// export const VALID_NETWORK_ID = 5;
+export const LOCAL_NETWORK_ID = 1337;
+
+enum Web3Type {
+  Generic,
+  Remote,
+  Status,
+}
+
+export const WEB3_INITIALIZED = "WEB3_INITIALIZED";
+export interface Web3InitializedAction {
+  type: typeof WEB3_INITIALIZED
+  web3Type: Web3Type
+}
+
+export const WEB3_ERROR = "WEB3_ERROR";
+export interface Web3ErrorAction {
+  type: typeof WEB3_ERROR
+  error: string
+}
+
+export const WEB3_NETWORK_ID_LOADED = "WEB3_NETWORK_ID_LOADED";
+export interface Web3NetworkIDLoadedAction {
+  type: typeof WEB3_NETWORK_ID_LOADED
+  networkID: number
+}
+
+export type Web3Actions =
+  Web3InitializedAction |
+  Web3ErrorAction |
+  Web3NetworkIDLoadedAction;
+
+
+export const web3Initialized = (t: Web3Type): Web3Actions => ({
+  type: WEB3_INITIALIZED,
+  web3Type: t,
+})
+
+export const web3NetworkIDLoaded = (id: number): Web3Actions => {
+  return {
+    type: WEB3_NETWORK_ID_LOADED,
+    networkID: id,
+  };
+}
+
+export const web3Error = (error: string): Web3Actions => {
+  return {
+    type: WEB3_ERROR,
+    error: error,
+  };
+}
+
+export const initializeWeb3 = () => {
+  const w = window as any;
+  if (w.ethereum) {
+    config.web3 = new Web3(w.ethereum);
+    return (dispatch: Dispatch, getState: () => RootState) => {
+      w.ethereum.enable()
+        .then(() => {
+          const t: Web3Type = w.ethereum.isStatus ? Web3Type.Status : Web3Type.Generic;
+          dispatch(web3Initialized(t));
+          config.web3!.eth.net.getId().then((id: number) => {
+            if (id !== VALID_NETWORK_ID && id !== LOCAL_NETWORK_ID) {
+              dispatch(web3Error(`wrong network, please connect to ${VALID_NETWORK_NAME}`));
+              return;
+            }
+
+            dispatch(web3NetworkIDLoaded(id))
+            loadWallet(config.web3!, dispatch, getState);
+          });
+        })
+        .catch((err: string) => {
+          //FIXME: handle error
+          console.log("error", err)
+        });
+    }
+  } else if (config.web3) {
+    return (dispatch: Dispatch, getState: () => RootState) => {
+      const t: Web3Type = w.ethereum.isStatus ? Web3Type.Status : Web3Type.Generic;
+      dispatch(web3Initialized(t));
+      config.web3!.eth.net.getId().then((id: number) => {
+        dispatch(web3NetworkIDLoaded(id))
+        loadWallet(config.web3!, dispatch, getState);
+      })
+      .catch((err: string) => {
+        //FIXME: handle error
+        console.log("error", err)
+      });
+    }
+  } else {
+    //FIXME: move to config
+    // const web3 = new Web3('https://ropsten.infura.io/v3/f315575765b14720b32382a61a89341a');
+    // const web3 = new Web3(new Web3.providers.HttpProvider('https://ropsten.infura.io/v3/f315575765b14720b32382a61a89341a'));
+    // alert(`remote`)
+    config.web3 = new Web3(new Web3.providers.WebsocketProvider('wss://ropsten.infura.io/ws/v3/f315575765b14720b32382a61a89341a'));
+    return (dispatch: Dispatch, getState: () => RootState) => {
+      dispatch(web3Initialized(Web3Type.Remote));
+      config.web3!.eth.net.getId().then((id: number) => {
+        dispatch(web3NetworkIDLoaded(id))
+        loadWallet(config.web3!, dispatch, getState);
+      })
+      .catch((err: string) => {
+        //FIXME: handle error
+        console.log("error", err)
+      });
+    }
+  }
+}
+
--- a/status-pay/dapps/simple-wallet/src/components/App.tsx
+++ b/status-pay/dapps/simple-wallet/src/components/App.tsx
@ -0,0 +1,106 @@
+import React from 'react';
+
+import TransactionsList from '../containers/TransactionsList';
+import TopPanel from '../containers/TopPanel';
+import ReceiveDialog from '../containers/ReceiveDialog';
+
+import { makeStyles } from '@material-ui/core/styles';
+import AppBar from '@material-ui/core/AppBar';
+import Toolbar from '@material-ui/core/Toolbar';
+import Typography from '@material-ui/core/Typography';
+import CssBaseline from '@material-ui/core/CssBaseline';
+import CircularProgress from '@material-ui/core/CircularProgress';
+
+import { compressedAddress } from '../utils';
+import { Props } from '../containers/App';
+
+const useStyles = makeStyles(theme => ({
+  container: {
+    paddingTop: 64,
+    [theme.breakpoints.only('xs')]: {
+      // paddingTop: 48,
+      paddingTop: 56,
+    },
+  },
+  loading: {
+    textAlign: "center",
+    marginTop: 100,
+    display: "inline-block",
+    width: "100%",
+  },
+  main: {
+    position: 'relative'
+  },
+  error: {
+    position: 'absolute',
+    width: '100%',
+    top: '0',
+    left: '0',
+    textAlign: 'center',
+    background: 'red',
+    color: 'white',
+    padding: "8px 0",
+    fontWeight: "bold",
+  },
+  progress: {
+    color: "rgb(14, 28, 54)",
+  },
+}));
+
+const App = (props: Props) => {
+  const classes = useStyles();
+
+  const loading = <div className={classes.loading}>
+    <CircularProgress disableShrink className={classes.progress}></CircularProgress>
+  </div>;
+
+  let body = <></>;
+
+  if (props.web3Error !== undefined) {
+    return <div className={classes.error}>
+      {props.web3Error}
+    </div>;
+  }
+
+  //FIXME: check if loading
+  if (props.walletError === undefined && props.loading) {
+    body = loading;
+  } else if (!props.loading) {
+    body = <>
+      <TopPanel />
+      <TransactionsList />
+    </>;
+  }
+
+  const networkText = props.networkID ? `(Net ID: ${props.networkID})` : "";
+  const walletAddress = props.walletAddress ? compressedAddress(props.walletAddress) : "";
+
+  return (
+    <div className={classes.container}>
+      <CssBaseline />
+      <AppBar style={{ backgroundColor: "#0e1c36" }}>
+        <Toolbar>
+          <Typography variant="h6" color="inherit">
+            Keycard Wallet &nbsp;
+            <Typography variant="caption" color="inherit">
+              {walletAddress} &nbsp;
+              {networkText}
+            </Typography>
+          </Typography>
+        </Toolbar>
+      </AppBar>
+
+      <div className={classes.main}>
+        {body}
+        {props.walletError !== undefined && <div className={classes.error}>
+          {props.walletError}
+        </div>}
+
+        <ReceiveDialog />
+      </div>
+
+    </div>
+  );
+};
+
+export default App;
--- a/status-pay/dapps/simple-wallet/src/components/NewWalletDialog.js
+++ b/status-pay/dapps/simple-wallet/src/components/NewWalletDialog.js
@ -0,0 +1,115 @@
+// import React from 'react';
+
+// import Button from '@material-ui/core/Button';
+// import Typography from '@material-ui/core/Typography';
+// import Dialog from '@material-ui/core/Dialog';
+// import DialogActions from '@material-ui/core/DialogActions';
+// import DialogContent from '@material-ui/core/DialogContent';
+// import DialogContentText from '@material-ui/core/DialogContentText';
+// import DialogTitle from '@material-ui/core/DialogTitle';
+// import Slide from '@material-ui/core/Slide';
+// import TextField from '@material-ui/core/TextField';
+// import CircularProgress from '@material-ui/core/CircularProgress';
+// import Divider from '@material-ui/core/Divider';
+// import InputAdornment from '@material-ui/core/InputAdornment';
+
+// const icons = ["💳", "👛", "💸", "😺"]
+
+// const iconStyles = {
+//   fontSize: "2em",
+//   marginRight: 16,
+//   padding: 4,
+//   cursor: "pointer"
+// }
+
+// const selectedIconStyles = {
+//   ...iconStyles,
+//   border: "4px solid #999"
+// }
+
+// const errorStyles = {
+//   color: "red",
+// }
+
+// function Transition(props) {
+//   return <Slide direction="up" {...props} />;
+// }
+
+// const NewWalletDialog = ({open, creating, selected, keycardAddress, onIconClick, onCancelClick, onCreateClick, onKeycardChange, error, onTapButtonClick, onMaxTxValueChange, maxTxValue}) => (
+//   <Dialog
+//     fullScreen
+//     TransitionComponent={Transition}
+//     open={open}
+//     aria-labelledby="alert-dialog-title"
+//     aria-describedby="alert-dialog-description"
+//   >
+//     <DialogTitle id="alert-dialog-title">New Wallet</DialogTitle>
+//     <DialogContent>
+//       <Typography variant="body2" gutterBottom>
+//         Choose an icon to identify your wallet
+//       </Typography>
+//       <div style={{marginBottom: 16}}>
+//         {icons.map((icon) =>
+//           <a key={icon} onClick={() => onIconClick(icon) }
+//             style={selected == icon ? selectedIconStyles : iconStyles}>{icon}</a>
+//         )}
+//       </div>
+
+//       <TextField
+//         margin="dense"
+//         label="Maximum transaction value"
+//         type="text"
+//         value={maxTxValue}
+//         style={{marginBottom: 16}}
+//         fullWidth
+//         onChange={(event) => onMaxTxValueChange(event.currentTarget.value)}
+//         InputProps={{
+//           startAdornment: <InputAdornment position="start" style={{paddingBottom: 7}}>Ξ</InputAdornment>,
+//         }}
+//       />
+
+//       <TextField
+//         margin="dense"
+//         label="Keycard address"
+//         type="text"
+//         value={keycardAddress}
+//         style={{marginBottom: 16}}
+//         fullWidth
+//         onChange={(event) => onKeycardChange(event.currentTarget.value)}
+//       />
+
+//       <div style={{margin: 16, textAlign: "center"}}>
+//         <Typography variant="body2" gutterBottom>
+//           or
+//         </Typography>
+//       </div>
+
+//       <Button onClick={() => onTapButtonClick("hello world")} size="large" color="primary" variant="contained" fullWidth>
+//         CONNECT TAPPING YOUR KEYCARD
+//       </Button>
+
+//       {creating && <div style={{marginTop: 50, textAlign: "center"}}>
+//         <CircularProgress />
+//       </div>}
+
+//     </DialogContent>
+
+//     <DialogActions>
+//       {!creating &&
+//         <Button onClick={onCancelClick} color="primary">
+//           Cancel
+//         </Button>}
+
+//       <Button onClick={onCreateClick} color="primary" autoFocus disabled={(selected && !creating) ? false : true}>
+//         {!creating ? "Create" : "Creating..."}
+//       </Button>
+//     </DialogActions>
+
+//     {error &&
+//       <DialogActions>
+//         <div style={errorStyles}>{error}</div>
+//       </DialogActions>}
+//   </Dialog>
+// );
+
+// export default NewWalletDialog;
--- a/status-pay/dapps/simple-wallet/src/components/ReceiveDialog.tsx
+++ b/status-pay/dapps/simple-wallet/src/components/ReceiveDialog.tsx
@ -0,0 +1,81 @@
+import React, { useEffect } from 'react';
+import Button from '@material-ui/core/Button';
+import Dialog from '@material-ui/core/Dialog';
+import DialogActions from '@material-ui/core/DialogActions';
+import DialogContent from '@material-ui/core/DialogContent';
+import DialogTitle from '@material-ui/core/DialogTitle';
+import Slide from '@material-ui/core/Slide';
+import { Props } from '../containers/ReceiveDialog';
+import { TransitionProps } from '@material-ui/core/transitions';
+import { makeStyles } from '@material-ui/core/styles';
+import { QRCode, QR8BitByte } from 'qrcode-generator-ts';
+
+const useStyles = makeStyles(theme => ({
+  qrdialog: {
+    width: "100%",
+  },
+  container: {
+    textAlign: "center",
+  },
+  qrcode: {
+    width: "100%",
+    margin: "0 auto",
+  }
+}));
+
+const Transition = React.forwardRef<unknown, TransitionProps>((props, ref) => {
+  return <Slide direction="up" ref={ref} {...props} />;
+});
+
+const ReceiveDialog = (props: Props) => {
+  const classes = useStyles();
+  const image = React.useRef<HTMLImageElement>(null);
+
+  useEffect(() => {
+    if (props.tokenAddress === undefined ||
+        props.tokenSymbol === undefined ||
+        props.address === undefined ||
+        props.networkID === undefined ||
+        image.current === null) {
+      return;
+    }
+
+    const uri = `ethereum:${props.tokenAddress}@${props.networkID}/transfer?address=${props.address}`;
+    const qr = new QRCode();
+    qr.setTypeNumber(6);
+    qr.addData(new QR8BitByte(uri));
+    qr.make();
+    image.current.src = qr.toDataURL(4);
+
+  }, [props.tokenAddress, props.tokenSymbol, props.address, props.networkID, image]);
+
+  return <Dialog
+          fullWidth={true}
+          maxWidth="xs"
+          className={classes.qrdialog}
+          open={props.open}
+          TransitionComponent={Transition}
+          keepMounted
+          onClose={props.handleClose}
+          aria-labelledby="alert-dialog-slide-title"
+          aria-describedby="alert-dialog-slide-description">
+    <DialogTitle id="alert-dialog-slide-title">Send only {props.tokenSymbol} tokens</DialogTitle>
+    <DialogContent className={classes.container}>
+      <div>
+        <img alt={props.address} className={classes.qrcode} ref={image} />
+      </div>
+      <div>
+        <pre>
+          {props.address}
+        </pre>
+      </div>
+    </DialogContent>
+    <DialogActions>
+      <Button onClick={props.handleClose} color="primary">
+        Close
+      </Button>
+    </DialogActions>
+  </Dialog>;
+}
+
+export default ReceiveDialog;
--- a/status-pay/dapps/simple-wallet/src/components/TopPanel.tsx
+++ b/status-pay/dapps/simple-wallet/src/components/TopPanel.tsx
@ -0,0 +1,68 @@
+import React from 'react';
+import Button from '@material-ui/core/Button';
+import Typography from '@material-ui/core/Typography';
+import { makeStyles } from '@material-ui/core/styles';
+import { Props } from '../containers/TopPanel';
+import { config } from '../global';
+
+const useStyles = makeStyles(theme => ({
+  container: {
+    position: 'relative',
+    height: 200,
+    // backgroundImage: 'linear-gradient(120deg, #84fab0 0%, #8fd3f4 100%)',
+    backgroundImage: 'linear-gradient(120deg, #fa709a 0%, #fee140 100%)',
+    border: "none",
+    boxShadow: "rgba(0, 0, 0, 0.8) 0 0 8px 0",
+    color: '#FFF',
+    display: 'flex',
+    alignItems: 'center',
+    justifyContent: 'center',
+  },
+  actions: {
+    textAlign: "center",
+    paddingTop: 20,
+  },
+  button: {
+    color: "#fff",
+    borderColor: "#fff",
+    "&:hover": {
+      borderColor: "#fff",
+    }
+  },
+}));
+
+const roundEther = (wei: string | undefined) => {
+  const fullTotal = wei ? config.web3!.utils.fromWei(wei) : "0";
+  const parts = fullTotal.split(".");
+  let roundedBalance = parts[0];
+  const decimals = (parts[1] || "").slice(0, 4)
+  if (decimals.length > 0) {
+    roundedBalance = `${roundedBalance}.${decimals}`;
+  }
+
+  return roundedBalance;
+}
+
+
+const TopPanel = (props: Props) => {
+  const classes = useStyles();
+
+  const roundedBalance = roundEther(props.balance);
+
+  return <div className={classes.container}>
+    <div>
+      <Typography variant="h2" color="inherit">
+        {roundedBalance} {props.tokenSymbol}
+      </Typography>
+      <div className={classes.actions}>
+        <Button
+          className={classes.button}
+          variant="outlined"
+          color="primary"
+          onClick={props.handleReceive}>Receive</Button>
+      </div>
+    </div>
+  </div>
+}
+
+export default TopPanel;
--- a/status-pay/dapps/simple-wallet/src/components/TransactionsList.tsx
+++ b/status-pay/dapps/simple-wallet/src/components/TransactionsList.tsx
@ -0,0 +1,52 @@
+import React from 'react';
+import { makeStyles } from '@material-ui/core/styles';
+import TransactionsListItem from '../containers/TransactionsListItem';
+import { Props } from '../containers/TransactionsList';
+import List from '@material-ui/core/List';
+import CircularProgress from '@material-ui/core/CircularProgress';
+
+const useStyles = makeStyles(theme => ({
+  addButton: {
+    position: 'fixed',
+    zIndex: 1,
+    bottom: 30,
+    right: 30,
+  },
+  loading: {
+    textAlign: "center",
+    marginTop: 32,
+  },
+  empty: {
+    padding: 10,
+    textAlign: "center",
+  },
+  wrongNetwork: {
+    padding: 10,
+    textAlign: "center",
+    background: "red",
+    color: "#fff",
+    fontWeight: "bold",
+  },
+  progress: {
+    color: "rgb(14, 28, 54)",
+  },
+}));
+
+const WalletsList = (props: Props) => {
+  const classes = useStyles();
+
+  return (<>
+    {props.loading && <div className={classes.loading}>
+      <CircularProgress className={classes.progress} disableShrink></CircularProgress>
+    </div>}
+
+    {<List>
+      {props.transactions.map((tx) => (
+        <TransactionsListItem key={tx.id} id={tx.id} />
+      ))}
+    </List>}
+  </>
+  )
+};
+
+export default WalletsList;
--- a/status-pay/dapps/simple-wallet/src/components/TransactionsListItem.tsx
+++ b/status-pay/dapps/simple-wallet/src/components/TransactionsListItem.tsx
@ -0,0 +1,154 @@
+import React from 'react'
+import { makeStyles } from '@material-ui/core/styles';
+import TransactionInIcon from '@material-ui/icons/CallReceived';
+import TransactionOutIcon from '@material-ui/icons/CallMade';
+import TransactionUnknownIcon from '@material-ui/icons/HelpOutline';
+import { withStyles } from '@material-ui/core/styles';
+import ListItem from '@material-ui/core/ListItem';
+import ListItemAvatar from '@material-ui/core/ListItemAvatar';
+import Avatar from '@material-ui/core/Avatar';
+import ListItemText from '@material-ui/core/ListItemText';
+import Divider from '@material-ui/core/Divider';
+import CircularProgress from '@material-ui/core/CircularProgress';
+import Fade from '@material-ui/core/Fade';
+import { Props } from '../containers/TransactionsListItem';
+import {
+  compressedAddress,
+} from '../utils';
+
+const StyledListItemText = withStyles({
+  secondary: {
+    whiteSpace: "nowrap",
+    textOverflow: "ellipsis",
+    overflow: "hidden",
+  },
+})(ListItemText);
+
+const useStyles = makeStyles(theme => ({
+  block: {
+    display: "block"
+  },
+  timestamp: {
+    display: "block",
+    fontStyle: "italic",
+    color: "rgba(0, 0, 0, 0.54)",
+    fontSize: 12,
+  },
+  avatar: {
+    backgroundColor: '#fff',
+    boxShadow: "rgba(180, 180, 180, 0.6) 0 0 5px 1px",
+    backgroundImage: 'linear-gradient(120deg, rgba(114, 255, 132, 0.5) 0%, rgba(255, 225, 255, 0.5) 100%)',
+  },
+  avatarIn: {
+    backgroundColor: '#fff',
+    boxShadow: "rgba(180, 180, 180, 0.6) 0 0 5px 1px",
+    extend: "avatar",
+    backgroundImage: 'linear-gradient(120deg, rgba(114, 255, 132, 0.5) 0%, rgba(255, 225, 255, 0.5) 100%)',
+  },
+  avatarOut: {
+    backgroundColor: '#fff',
+    boxShadow: "rgba(180, 180, 180, 0.6) 0 0 5px 1px",
+    extend: "avatar",
+    backgroundImage: 'linear-gradient(120deg, rgba(255, 114, 114, 0.5) 0%, rgba(255, 225, 255, 0.5) 100%)',
+  },
+  avatarLoading: {
+    position: "absolute",
+    top: 0,
+    left: 0,
+  },
+  icon: {
+    color: "#000",
+  },
+  iconIn: {
+    color: "green",
+  },
+  iconOut: {
+    color: "red",
+  },
+}));
+
+const icon = (event: string, className: any) => {
+  switch(event) {
+    case "TopUp":
+      return <TransactionInIcon className={className} />
+    case "NewPayment":
+    case "Withdraw":
+      return <TransactionOutIcon className={className} />
+    default:
+      return <TransactionUnknownIcon />
+  }
+};
+
+export function timestampToString(timestamp: number | undefined) {
+  if (timestamp === undefined) {
+    return "";
+  }
+
+  return new Date(timestamp * 1000).toLocaleDateString('default', {
+    year: 'numeric',
+    month: 'short',
+    day: 'numeric',
+    hour: 'numeric',
+    minute: '2-digit',
+  });
+}
+
+const TransactionsListItem = (props: Props) => {
+  const classes = useStyles();
+
+  const tx = props.transactions[props.id];
+  if (tx === undefined) {
+    return null;
+  }
+
+  const fromAddress = tx.from ? compressedAddress(tx.from, 8) : "";
+  const toAddress = tx.to ? compressedAddress(tx.to, 8) : "";
+
+  let date = "";
+  const block = props.blocks[tx.blockNumber];
+  if (block !== undefined) {
+    date = timestampToString(block.timestamp);
+  }
+
+  const primary = <span>
+    <span className={classes.block}>{tx.valueInETH} Ξ</span>
+    <span className={classes.timestamp}>{date}</span>
+  </span>;
+
+  const secondary = <span>
+    <span className={classes.block}>{tx.blockNumber} from: {fromAddress}</span>
+    <span className={classes.block}>to: {toAddress}</span>
+  </span>;
+
+  const [avatarClass, iconClass] = (event => {
+    switch(event) {
+      case "TopUp":
+        return [classes.avatarIn, classes.iconIn];
+      case "NewPayment":
+      case "Withdraw":
+        return [classes.avatarOut, classes.iconOut];
+      default:
+        return [classes.avatar, classes.icon];
+    }
+  })(tx.event)
+
+  return (
+    <>
+      <ListItem button>
+        <ListItemAvatar>
+          <Fade in={true} timeout={800}>
+            <Avatar className={avatarClass}>
+              {(tx.pending === true || tx.pending === undefined)
+                && <CircularProgress color="secondary" className={classes.avatarLoading}/>}
+              {icon(tx.event, iconClass)}
+            </Avatar>
+          </Fade>
+        </ListItemAvatar>
+        <StyledListItemText primary={primary} secondary={secondary} />
+      </ListItem>
+      <Divider />
+    </>
+  );
+};
+
+export default TransactionsListItem;
--- a/status-pay/dapps/simple-wallet/src/config.ts.template
+++ b/status-pay/dapps/simple-wallet/src/config.ts.template
@ -0,0 +1 @@
+export const statusPayAddress ="0x0000000000000000000000000000000000000000";
--- a/status-pay/dapps/simple-wallet/src/containers/App.ts
+++ b/status-pay/dapps/simple-wallet/src/containers/App.ts
@ -0,0 +1,37 @@
+import { connect } from 'react-redux';
+import App from '../components/App';
+import { RootState } from '../reducers';
+import { Dispatch } from 'redux';
+
+export interface StateProps {
+  loading: boolean
+  web3Error: string | undefined
+  walletAddress: string | undefined
+  networkID: number | undefined
+  walletError: string | undefined
+}
+
+export interface DispatchProps {
+}
+
+export type Props = StateProps & DispatchProps;
+
+const mapStateToProps = (state: RootState): StateProps => {
+  const ready = state.web3.initialized && state.wallet.ready;
+
+  return {
+    loading: !ready,
+    web3Error: state.web3.error,
+    networkID: state.web3.networkID,
+    walletAddress: state.wallet.walletAddress,
+    walletError: state.wallet.error,
+  }
+};
+
+const mapDispatchToProps = (dispatch: Dispatch): DispatchProps => ({
+});
+
+export default connect(
+  mapStateToProps,
+  mapDispatchToProps
+)(App);
--- a/status-pay/dapps/simple-wallet/src/containers/NewWalletDialog.js
+++ b/status-pay/dapps/simple-wallet/src/containers/NewWalletDialog.js
@ -0,0 +1,33 @@
+// import { connect } from 'react-redux';
+// import NewWalletDialog from '../components/NewWalletDialog';
+// import {
+//   newWalletSelectIcon,
+//   newWalletCancel,
+//   createWallet,
+//   newWalletFormKeycardAddressChanged,
+//   newWalletFormMaxTxValueChanged,
+//   signMessagePinless,
+// } from '../actions';
+
+// const mapStateToProps = state => ({
+//   open: state.newWalletForm.open,
+//   selected: state.newWalletForm.icon,
+//   creating: state.newWalletForm.creating,
+//   error: (state.newWalletForm.error || "").toString(),
+//   keycardAddress: state.newWalletForm.keycardAddress || "",
+//   maxTxValue: state.newWalletForm.maxTxValue,
+// });
+
+// const mapDispatchToProps = dispatch => ({
+//   onIconClick: (icon) => dispatch(newWalletSelectIcon(icon)),
+//   onCancelClick: () => dispatch(newWalletCancel()),
+//   onCreateClick: () => dispatch(createWallet()),
+//   onKeycardChange: (address) => dispatch(newWalletFormKeycardAddressChanged(address)),
+//   onMaxTxValueChange: (value) => dispatch(newWalletFormMaxTxValueChanged(value)),
+//   onTapButtonClick: (message) => dispatch(signMessagePinless(message)),
+// });
+
+// export default connect(
+//   mapStateToProps,
+//   mapDispatchToProps
+// )(NewWalletDialog);
--- a/status-pay/dapps/simple-wallet/src/containers/ReceiveDialog.ts
+++ b/status-pay/dapps/simple-wallet/src/containers/ReceiveDialog.ts
@ -0,0 +1,42 @@
+import { connect } from 'react-redux';
+import { RootState } from '../reducers';
+import { MouseEvent } from 'react';
+import { Dispatch } from 'redux';
+import ReceiveDialog from '../components/ReceiveDialog';
+import { hideWalletQRCode } from '../actions/wallet';
+
+export interface StateProps {
+  open: boolean
+  tokenSymbol: string | undefined
+  tokenAddress: string | undefined
+  address: string | undefined
+  networkID: number | undefined
+}
+
+export interface DispatchProps {
+  handleClose: (e: MouseEvent) => any
+}
+
+export type Props = StateProps & DispatchProps;
+
+const mapStateToProps = (state: RootState): StateProps => {
+  return {
+    open: state.wallet.showWalletQRCode,
+    tokenSymbol: state.wallet.erc20Symbol,
+    tokenAddress: state.wallet.erc20Address,
+    address: state.wallet.walletAddress,
+    networkID: state.web3.networkID,
+  }
+}
+
+const mapDispatchToProps = (dispatch: Dispatch) => ({
+  handleClose: (e: MouseEvent) => {
+    e.preventDefault();
+    dispatch(hideWalletQRCode());
+  }
+});
+
+export default connect(
+  mapStateToProps,
+  mapDispatchToProps
+)(ReceiveDialog);
--- a/status-pay/dapps/simple-wallet/src/containers/TopPanel.ts
+++ b/status-pay/dapps/simple-wallet/src/containers/TopPanel.ts
@ -0,0 +1,38 @@
+import { connect } from 'react-redux';
+import { RootState } from '../reducers';
+import { MouseEvent } from 'react';
+import { Dispatch } from 'redux';
+import TopPanel from '../components/TopPanel';
+import { showWalletQRCode } from '../actions/wallet';
+
+export interface StateProps {
+  tokenSymbol: string | undefined
+  balance: string | undefined
+  availableBalance: string | undefined
+}
+
+export interface DispatchProps {
+  handleReceive: (e: MouseEvent) => any
+}
+
+export type Props = StateProps & DispatchProps;
+
+const mapStateToProps = (state: RootState): StateProps => {
+  return {
+    balance: state.wallet.balance,
+    tokenSymbol: state.wallet.erc20Symbol,
+    availableBalance: state.wallet.availableBalance,
+  }
+}
+
+const mapDispatchToProps = (dispatch: Dispatch) => ({
+  handleReceive: (e: MouseEvent) => {
+    e.preventDefault();
+    dispatch(showWalletQRCode());
+  }
+});
+
+export default connect(
+  mapStateToProps,
+  mapDispatchToProps
+)(TopPanel);
--- a/status-pay/dapps/simple-wallet/src/containers/TransactionsList.ts
+++ b/status-pay/dapps/simple-wallet/src/containers/TransactionsList.ts
@ -0,0 +1,46 @@
+import { connect } from 'react-redux';
+import { RootState } from '../reducers';
+import { Dispatch } from 'redux';
+import TransactionsList from '../components/TransactionsList';
+import { TransactionState } from '../reducers/transactions';
+
+export interface StateProps {
+  loading: boolean
+  transactions: TransactionState[]
+}
+
+export interface DispatchProps {
+}
+
+export type Props = StateProps & DispatchProps;
+
+const newProps = (): Props => {
+  return {
+    loading: false,
+    transactions: [],
+  }
+}
+
+const mapStateToProps = (state: RootState): StateProps => {
+  const props = newProps();
+
+  const transactions: TransactionState[] = [];
+  if (!props.loading) {
+    for (const txHash in state.transactions.transactions) {
+      transactions.unshift(state.transactions.transactions[txHash]);
+    }
+  }
+
+  return {
+    ...props,
+    loading: state.transactions.loadingRequests > 0,
+    transactions: transactions,
+  }
+};
+
+const mapDispatchToProps = (dispatch: Dispatch) => ({});
+
+export default connect(
+  mapStateToProps,
+  mapDispatchToProps
+)(TransactionsList);
--- a/status-pay/dapps/simple-wallet/src/containers/TransactionsListItem.ts
+++ b/status-pay/dapps/simple-wallet/src/containers/TransactionsListItem.ts
@ -0,0 +1,42 @@
+import { connect } from 'react-redux';
+import { RootState } from '../reducers';
+import { Dispatch } from 'redux';
+import TransactionsListItem from '../components/TransactionsListItem';
+import { TransactionState } from '../reducers/transactions';
+import { BlocksState } from '../reducers/blocks';
+
+interface Transactions {
+  [txHash: string]: TransactionState
+}
+
+export interface StateProps {
+  id: string
+  key: string,
+  transactions: Transactions
+  blocks: BlocksState
+}
+
+export interface OwnProps {
+  id: string,
+  key: string,
+}
+
+export interface DispatchProps {}
+
+export type Props = StateProps & DispatchProps;
+
+const mapStateToProps = (state: RootState, ownProps: OwnProps): StateProps => {
+  return {
+    id: ownProps.id,
+    key: ownProps.key,
+    transactions: state.transactions.transactions,
+    blocks: state.blocks,
+  }
+};
+
+const mapDispatchToProps = (dispatch: Dispatch) => ({});
+
+export default connect(
+  mapStateToProps,
+  mapDispatchToProps
+)(TransactionsListItem);
--- a/status-pay/dapps/simple-wallet/src/global.ts
+++ b/status-pay/dapps/simple-wallet/src/global.ts
@ -0,0 +1,9 @@
+import Web3 from 'web3';
+
+export interface Config {
+  web3: Web3 | undefined
+}
+
+export const config: Config = {
+  web3: undefined,
+};
--- a/status-pay/dapps/simple-wallet/src/index.tsx
+++ b/status-pay/dapps/simple-wallet/src/index.tsx
@ -0,0 +1,61 @@
+import React from 'react';
+import ReactDOM from 'react-dom';
+import thunkMiddleware from 'redux-thunk';
+import { Provider } from 'react-redux'
+import {
+  createStore,
+  applyMiddleware,
+  Middleware,
+  MiddlewareAPI,
+  Dispatch,
+} from 'redux'
+import { initializeWeb3 } from './actions/web3';
+import { createRootReducer } from './reducers'
+import 'typeface-roboto';
+import App from './containers/App';
+
+// FIXME: remove, use a built-in one
+interface Action {
+  (...args: any[]): any
+}
+
+const loggerMiddleware: Middleware = ({ getState }: MiddlewareAPI) => (
+    next: Dispatch
+  ) => action => {
+    console.log('will dispatch', action)
+
+    // Call the next dispatch method in the middleware chain.
+    const returnValue = next(action)
+
+    console.log('state after dispatch', getState())
+
+    // This will likely be the action itself, unless
+    // a middleware further in chain changed it.
+    return returnValue
+  }
+
+
+let middlewares: Middleware[] = [
+  thunkMiddleware,
+];
+
+if (process.env.NODE_ENV !== 'production') {
+  middlewares = [
+    ...middlewares,
+    loggerMiddleware,
+  ];
+}
+
+const store = createStore(
+  createRootReducer(),
+  applyMiddleware(...middlewares),
+);
+
+store.dispatch<any>(initializeWeb3());
+
+ReactDOM.render(
+  <Provider store={store}>
+    <App />
+  </Provider>,
+  document.getElementById("root")
+);
--- a/status-pay/dapps/simple-wallet/src/reducers/blocks.ts
+++ b/status-pay/dapps/simple-wallet/src/reducers/blocks.ts
@ -0,0 +1,47 @@
+import {
+  BLOCK_LOADING,
+  BLOCK_LOADED,
+  BlocksActions,
+} from '../actions/blocks';
+
+export interface BlockState {
+  number: number
+  timestamp: number | undefined
+}
+
+export interface BlocksState {
+  [blockNumber: number]: BlockState
+};
+
+const initialState = {};
+
+export const blocksReducer = (state: BlocksState = initialState, action: BlocksActions): BlocksState => {
+  switch (action.type) {
+    case BLOCK_LOADING: {
+      return {
+        ...state,
+        [action.number]: {
+          number: action.number,
+          timestamp: undefined,
+        }
+      }
+    }
+
+    case BLOCK_LOADED: {
+      const blockState = state[action.number];
+      if (blockState === undefined) {
+        return state;
+      }
+
+      return {
+        ...state,
+        [action.number]: {
+          ...blockState,
+          timestamp: action.timestamp,
+        }
+      }
+    }
+  }
+
+  return state;
+}
--- a/status-pay/dapps/simple-wallet/src/reducers/index.ts
+++ b/status-pay/dapps/simple-wallet/src/reducers/index.ts
@ -0,0 +1,31 @@
+import { combineReducers } from 'redux';
+import {
+  Web3State,
+  web3Reducer,
+} from './web3';
+import {
+  WalletState,
+  walletReducer,
+} from './wallet';
+import {
+  TransactionsState,
+  transactionsReducer,
+} from './transactions';
+import {
+  BlocksState,
+  blocksReducer,
+} from './blocks';
+
+export interface RootState {
+  web3: Web3State,
+  wallet: WalletState,
+  transactions: TransactionsState,
+  blocks: BlocksState,
+}
+
+export const createRootReducer = () => combineReducers({
+  web3: web3Reducer,
+  wallet: walletReducer,
+  transactions: transactionsReducer,
+  blocks: blocksReducer,
+});
--- a/status-pay/dapps/simple-wallet/src/reducers/transactions.ts
+++ b/status-pay/dapps/simple-wallet/src/reducers/transactions.ts
@ -0,0 +1,115 @@
+import { config } from '../global';
+import {
+  TXS_LOADING,
+  TXS_LOADED,
+  TXS_TRANSACTION_DISCOVERED,
+  TXS_TRANSACTION_CONFIRMED,
+  TxsActions,
+} from '../actions/transactions';
+
+export interface TransactionState {
+  id: string
+  blockNumber: number
+  event: string
+  transactionHash: string
+  pending: boolean | undefined
+  from: string | undefined
+  to: string | undefined
+  value: string
+  valueInETH: string
+}
+
+export interface TransactionsState {
+  loadingRequests: number
+  transactions: {
+    [txHash: string]: TransactionState
+  }
+};
+
+const newTransactionState = (): TransactionState => ({
+  id: "",
+  blockNumber: 0,
+  event: "",
+  transactionHash: "",
+  pending: undefined,
+  from: undefined,
+  to: undefined,
+  value: "",
+  valueInETH: "",
+});
+
+const initialState: TransactionsState = {
+  loadingRequests: 0,
+  transactions: {},
+};
+
+export const transactionsReducer = (state: TransactionsState = initialState, action: TxsActions): TransactionsState => {
+  switch (action.type) {
+    case TXS_LOADING: {
+      return {
+        ...state,
+        loadingRequests: state.loadingRequests + 1,
+      }
+    }
+
+    case TXS_LOADED: {
+      return {
+        ...state,
+        loadingRequests: state.loadingRequests - 1,
+      }
+    }
+
+    case TXS_TRANSACTION_DISCOVERED: {
+      const txState: TransactionState = state.transactions[action.transactionHash] || newTransactionState();
+      // if tx was is new (pending === undefined)
+      // OR tx was pending
+      // then set the current state
+      // otherwise if tx was confirmed, leave it confirmed in case a watcher is getting
+      // an old event
+      if (txState.pending === undefined || txState.pending) {
+        txState.pending = action.pending;
+      }
+
+      const valueInETH = config.web3!.utils.fromWei(action.value);
+
+      return {
+        ...state,
+        transactions: {
+          ...state.transactions,
+          [action.id]: {
+            ...txState,
+            id: action.id,
+            blockNumber: action.blockNumber,
+            event: action.event,
+            transactionHash: action.transactionHash,
+            pending: action.pending,
+            from: action.from,
+            to: action.to,
+            value: action.value,
+            valueInETH: valueInETH,
+          }
+        }
+      }
+    }
+
+    case TXS_TRANSACTION_CONFIRMED: {
+      const txState: TransactionState = state.transactions[action.transactionHash];
+      if (txState === undefined) {
+        return state;
+      }
+
+      return {
+        ...state,
+        transactions: {
+          ...state.transactions,
+          [action.transactionHash]: {
+            ...txState,
+            pending: false,
+          }
+        }
+      }
+    }
+  }
+
+  return state;
+}
--- a/status-pay/dapps/simple-wallet/src/reducers/wallet.ts
+++ b/status-pay/dapps/simple-wallet/src/reducers/wallet.ts
@ -0,0 +1,124 @@
+import {
+  WalletActions,
+  WALLET_KEYCARD_ADDRESS_NOT_SPECIFIED,
+  WALLET_INVALID_KEYCARD_ADDRESS,
+  WALLET_FACTORY_ERC20_ADDRESS_LOADED,
+  WALLET_FACTORY_ERC20_SYMBOL_LOADED,
+  WALLET_FACTORY_LOADING_WALLET_ADDRESS,
+  WALLET_FACTORY_KEYCARD_NOT_FOUND,
+  WALLET_FACTORY_WALLET_ADDRESS_LOADED,
+  WALLET_LOADING_BALANCE,
+  WALLET_BALANCE_LOADED,
+  WALLET_TOGGLE_QRCODE,
+} from '../actions/wallet';
+
+export interface WalletState {
+  ready: boolean
+  loading: boolean
+  erc20Address: string | undefined
+  erc20Symbol: string | undefined
+  keycardAddress: string | undefined
+  walletAddress: string | undefined
+  walletFound: boolean
+  balance: string | undefined
+  availableBalance: string | undefined
+  error: string | undefined
+  showWalletQRCode: boolean
+}
+
+const initialState = {
+  ready: false,
+  loading: false,
+  erc20Address: undefined,
+  erc20Symbol: undefined,
+  keycardAddress: undefined,
+  walletAddress: undefined,
+  walletFound: false,
+  balance: undefined,
+  availableBalance: undefined,
+  error: undefined,
+  showWalletQRCode: false,
+};
+
+export const walletReducer = (state: WalletState = initialState, action: WalletActions): WalletState => {
+  switch (action.type) {
+    case WALLET_TOGGLE_QRCODE: {
+      return {
+        ...state,
+        showWalletQRCode: action.open,
+      }
+    }
+
+    case WALLET_KEYCARD_ADDRESS_NOT_SPECIFIED: {
+      return {
+        ...state,
+        error: "Keycard address not specified. Tap your keycard on your phone.",
+      }
+    }
+
+    case WALLET_INVALID_KEYCARD_ADDRESS: {
+      return {
+        ...state,
+        error: "invalid keycard address",
+      }
+    }
+
+    case WALLET_FACTORY_LOADING_WALLET_ADDRESS: {
+      return {
+        ...state,
+        loading: true,
+        keycardAddress: action.keycardAddress,
+      }
+    }
+
+    case WALLET_FACTORY_KEYCARD_NOT_FOUND: {
+      return {
+        ...state,
+        loading: false,
+        error: "not wallet found for the selected Keycard address",
+      }
+    }
+
+    case WALLET_FACTORY_ERC20_ADDRESS_LOADED: {
+      return {
+        ...state,
+        erc20Address: action.address,
+      }
+    }
+
+    case WALLET_FACTORY_ERC20_SYMBOL_LOADED: {
+      return {
+        ...state,
+        erc20Symbol: action.symbol,
+      }
+    }
+
+    case WALLET_FACTORY_WALLET_ADDRESS_LOADED: {
+      return {
+        ...state,
+        loading: false,
+        walletFound: true,
+        walletAddress: action.walletAddress,
+      }
+    }
+
+    case WALLET_LOADING_BALANCE: {
+      return {
+        ...state,
+        loading: true,
+      }
+    }
+
+    case WALLET_BALANCE_LOADED: {
+      return {
+        ...state,
+        ready: true,
+        loading: false,
+        balance: action.balance,
+        availableBalance: action.availableBalance,
+      }
+    }
+  }
+
+  return state
+}
--- a/status-pay/dapps/simple-wallet/src/reducers/web3.ts
+++ b/status-pay/dapps/simple-wallet/src/reducers/web3.ts
@ -0,0 +1,45 @@
+import {
+  Web3Actions,
+  WEB3_INITIALIZED,
+  WEB3_ERROR,
+  WEB3_NETWORK_ID_LOADED,
+} from '../actions/web3';
+
+export interface Web3State {
+  initialized: boolean
+  networkID: number | undefined
+  error: string | undefined
+}
+
+const initialState: Web3State = {
+  initialized: false,
+  networkID: undefined,
+  error: undefined,
+};
+
+export const web3Reducer = (state: Web3State = initialState, action: Web3Actions): Web3State => {
+  switch (action.type) {
+    case WEB3_INITIALIZED: {
+      return {
+        ...state,
+        initialized: true,
+      }
+    }
+
+    case WEB3_ERROR: {
+      return {
+        ...state,
+        error: action.error,
+      }
+    }
+
+    case WEB3_NETWORK_ID_LOADED: {
+      return {
+        ...state,
+        networkID: action.networkID,
+      }
+    }
+  }
+
+  return state;
+}
--- a/status-pay/dapps/simple-wallet/src/utils.ts
+++ b/status-pay/dapps/simple-wallet/src/utils.ts
@ -0,0 +1,20 @@
+export const emptyAddress = "0x0000000000000000000000000000000000000000";
+
+export const compressedAddress = (a: string, padding: number = 4) => {
+  return `${a.slice(0, padding + 2)}...${a.slice(a.length - padding)}`;
+}
+
+export const isEmptyAddress = (a: string) =>
+  a === emptyAddress;
+
+export const addPadding = (n: number, hex: string) => {
+  if (hex.startsWith("0x")) {
+    hex = hex.slice(2);
+  }
+
+  for (let i = hex.length; i < n; i++) {
+    hex = `0${hex}`;
+  }
+
+  return `0x${hex}`;
+};
--- a/status-pay/dapps/simple-wallet/tsconfig.json
+++ b/status-pay/dapps/simple-wallet/tsconfig.json
@ -0,0 +1,25 @@
+{
+  "compilerOptions": {
+    "target": "es5",
+    "lib": [
+      "dom",
+      "dom.iterable",
+      "esnext"
+    ],
+    "allowJs": true,
+    "skipLibCheck": true,
+    "esModuleInterop": true,
+    "allowSyntheticDefaultImports": true,
+    "strict": true,
+    "forceConsistentCasingInFileNames": true,
+    "module": "esnext",
+    "moduleResolution": "node",
+    "resolveJsonModule": true,
+    "isolatedModules": true,
+    "noEmit": true,
+    "jsx": "react"
+  },
+  "include": [
+    "src"
+  ]
+}
--- a/status-pay/dapps/simple-wallet/yarn.lock
+++ b/status-pay/dapps/simple-wallet/yarn.lock
--- a/status-pay/test/statuspay_test.js
+++ b/status-pay/test/statuspay_test.js
@ -73,7 +73,7 @@ contract('StatusPay', (accounts) => {
      await requestPaymentTest(10);
      assert.fail("requestPayment should have failed");
    } catch (err) {
-      assert.equal(err.reason, "no account for this Keycard");
+      assert.equal(err.reason, "payer account not found");
    }
  });

@ -181,12 +181,13 @@ contract('StatusPay', (accounts) => {

    const event = receipt.logs.find(element => element.event.match('NewPayment'));

-    assert.equal(event.args.to, merchant);
-    assert.equal(event.args.amount, 10);
-
    let buyerAcc = await statusPay.owners.call(owner);
    let merchantAcc = await statusPay.owners.call(merchant);

+    assert.equal(event.args.from, buyerAcc);
+    assert.equal(event.args.to, merchantAcc);
+    assert.equal(event.args.amount, 10);
+
    assert.equal((await statusPay.accounts.call(buyerAcc)).balance.toNumber(), 90);
    assert.equal((await statusPay.accounts.call(merchantAcc)).balance.toNumber(), 10);
  });
				`@ -0,0 +1 @@`
				`export const statusPayAddress ="0x0000000000000000000000000000000000000000";`