diff --git a/playground/README b/playground/README
deleted file mode 100644
index 9c3d9704a..000000000
--- a/playground/README
+++ /dev/null
@@ -1 +0,0 @@
-Contains files with small experiments / prototypes for designers.
diff --git a/playground/contract.html b/playground/contract.html
deleted file mode 100644
index 20365aac8..000000000
--- a/playground/contract.html
+++ /dev/null
@@ -1,67 +0,0 @@
-<!doctype html>
-<html>
-<head>
-  <title>Contract playground</title>
-  <meta charset="UTF-8">
-  <script src="/src/i18n.js"></script>
-  <script src="/src/vendor/system-csp-production.src.js"></script>
-  <script type="application/javascript">
-    var contract = {
-      "H_wire": "ADVPV6Q9P0GF74CD5H5ENYCC862AM34ZS93JDQR2G09SR8868YMPYCVQP8WGGVVYZDY2ZMG703TQESN837VBAEDCGMS2D2RADKFKW08",
-      "amount": {
-        "currency": "KUDOS", "fraction": 100000, "value": 0
-      }
-      ,
-      "auditors": [],
-      "exchanges": [{
-        "master_pub": "CQQZ9DY3MZ1ARMN5K1VKDETS04Y2QCKMMCFHZSWJWWVN82BTTH00",
-        "url": "https://exchange.demo.taler.net/"
-      }],
-      "expiry": "/Date(1483798537)/",
-      "fulfillment_url": "https://blog.demo.taler.net/essay/7._Why_Schools_Should_Exclusively_Use_Free%C2%A0Software?uuid=${H_contract}&timestamp=1475158537&tid=501210171398673",
-      "locations": {}
-      ,
-      "max_fee": {
-        "currency": "KUDOS", "fraction": 0, "value": 3
-      }
-      ,
-      "merchant": {
-        "address": "nowhere", "jurisdiction": "none", "name": "Kudos Inc."
-      }
-      ,
-      "merchant_pub": "9K5V0G537N2RPKGQVYV2Q9WBS8R7QB93RTC7BJF1YE6XQQQ6BS2G",
-      "products": [{
-        "description": "Essay: 7. Why Schools Should Exclusively Use Free Software",
-        "price": {"currency": "KUDOS", "fraction": 100000, "value": 0},
-        "product_id": 0,
-        "quantity": 1
-      }],
-      "refund_deadline": "/Date(1475158537)/",
-      "timestamp": "/Date(1475158537)/",
-      "transaction_id": 501210171398673
-    };
-  </script>
-</head>
-<body>
-  <div id="container"></div>
-<script>
-  "use strict";
-  System.config({
-    defaultJSExtensions: true,
-  });
-
-  document.addEventListener("DOMContentLoaded", () => {
-    System.import("/src/renderHtml")
-      .then((render) => {
-        let r = render.renderContract(contract);
-        let component = {view: function () {return r;}}
-        m.mount(document.getElementById("container"), component);
-      }
-    )
-    .catch((e) => {
-      console.error(e.stack);
-    });
-  });
-</script>
-</body>
-</html>
diff --git a/playground/contract_full.html b/playground/contract_full.html
deleted file mode 100644
index e00c2b90f..000000000
--- a/playground/contract_full.html
+++ /dev/null
@@ -1,116 +0,0 @@
-<!doctype html>
-<html>
-<head>
-  <title>Contract playground</title>
-  <meta charset="UTF-8">
-  <script src="../lib/vendor/mithril.js"></script>
-  <script src="../lib/i18n.js"></script>
-  <script src="../lib/vendor/system-csp-production.src.js"></script>
-  <script type="application/javascript">
-    var contract = {
-      "H_wire": "ADVPV6Q9P0GF74CD5H5ENYCC862AM34ZS93JDQR2G09SR8868YMPYCVQP8WGGVVYZDY2ZMG703TQESN837VBAEDCGMS2D2RADKFKW08",
-      "amount": {
-        "currency": "KUDOS", "fraction": 100000, "value": 0
-      }
-      ,
-      "auditors": [{
-        "auditor_pub": "ERFPOJ0FRKRLM909ILKDETS04Y2QCKMMCFHZSWJWWVN82BTTH00",
-        "auditor_url": "https://auditor.example.gov/",
-	"denomination_keys": [{"denom_pub_h": "ERFPOJ0FRKRLM909ILKDETS04Y2QCKMMCFHZSWJWWVN82BTTH00",
-	                       "auditor_sig": "XPROFERPOJERVJPROJ45ETS04Y2QCKMMCFHZSWJWWVN82BTTH00"}]
-      },
-      {
-        "auditor_pub": "09FGKJ0FRKRLM909ILKDETS04Y2QCKMMCFHZSWJWWVN82BTTH00",
-        "auditor_url": "https://auditor-alt.example.gov/",
-	"denomination_keys": [{"denom_pub_h": "RCC0U8KPOKN76PO9ILKDETS04Y2QCKMMCFHZSWJWWVN82BTTH00",
-	                       "auditor_sig": "VBOOP575JJWRVJPROJ45ETS04Y2QCKMMCFHZSWJWWVN82BTTH00"}]
-      }
-      ],
-      "exchanges": [{
-        "master_pub": "CQQZ9DY3MZ1ARMN5K1VKDETS04Y2QCKMMCFHZSWJWWVN82BTTH00",
-        "url": "https://exchange.demo.taler.net/"
-      },
-      {
-        "master_pub": "OIJ23JIO4Z1ARMN5K1VKDETS04Y2QCKMMCFHZSWJWWVN82BTTH00",
-        "url": "https://exchange.example.com/"
-      }],
-      "expiry": "/Date(1483798537)/",
-      "fulfillment_url": "https://playground-purchase.example.com/fulfillment?x=123",
-      "locations": {"LOC0": {"country": "France",
-                             "city": "Bordeaux",
-			     "region": "Nouvelle-Aquitaine",
-			     "province": "Gironde",
-			     "zip_code": "33000",
-			     "street": "Pas connu",
-			     "street_number": 8},
-	            "LOC1": {"country": "USA",
-                             "city": "La Fayette",
-			     "state": "Louisiana",
-			     "zip_code": "70508",
-			     "street": "Not given",
-			     "street_number": 8}}
-      ,
-      "max_fee": {
-        "currency": "KUDOS", "fraction": 0, "value": 3
-      }
-      ,
-      "merchant": {
-        "address": "nowhere", "jurisdiction": "none", "name": "Kudos Inc."
-      }
-      ,
-      "merchant_pub": "9K5V0G537N2RPKGQVYV2Q9WBS8R7QB93RTC7BJF1YE6XQQQ6BS2G",
-      "products": [{
-        "description": "Essay: 7. Why Schools Should Exclusively Use Free Software",
-        "price": {"currency": "KUDOS", "fraction": 100000, "value": 0},
-        "product_id": 0,
-        "quantity": 1
-      },
-      {
-        "description": "E-reader for playground reads",
-        "price": {"currency": "KUDOS", "fraction": 100000, "value": 10},
-        "product_id": 9,
-        "quantity": 3,
-	"taxes": [{"teatax": {"currency": "KUDOS", "fraction": 1000, "value": 0}},
-                  {"IVA": {"currency": "KUDOS", "fraction": 1000, "value": 0}}],
-        "delivery_date": "/Date(1475148537)/",
-        "delivery_location": "LOC1"
-      },
-      {
-        "description": "Fancy playground bookmark",
-        "price": {"currency": "KUDOS", "fraction": 500000, "value": 0},
-        "product_id": 4,
-        "quantity": 1,
-	"taxes": [{"IMP": {"currency": "KUDOS", "fraction": 3000, "value": 0}},
-                  {"EUX": {"currency": "KUDOS", "fraction": 10, "value": 0}}],
-        "delivery_date": "/Date(1475138597)/",
-        "delivery_location": "LOC1"
-      }],
-      "refund_deadline": "/Date(1475158537)/",
-      "timestamp": "/Date(1475158537)/",
-      "transaction_id": 501210171398673
-    };
-  </script>
-</head>
-<body>
-  <div id="container"></div>
-<script>
-  "use strict";
-  System.config({
-    defaultJSExtensions: true,
-  });
-
-  document.addEventListener("DOMContentLoaded", () => {
-    System.import("../lib/wallet/renderHtml")
-      .then((render) => {
-        let r = render.renderContract(contract);
-        let component = {view: function () {return r;}}
-        m.mount(document.getElementById("container"), component);
-      }
-    )
-    .catch((e) => {
-      console.error(e.stack);
-    });
-  });
-</script>
-</body>
-</html>
