diff --git a/c3l_membership/views.py b/c3l_membership/views.py
--- a/c3l_membership/views.py
+++ b/c3l_membership/views.py
@@ -34,15 +34,18 @@ def index():
         ("wire transfer", gettext("by wire transfer")),
     ]
 
-    for k, v in (
-        ("DIGICASH_ENABLED", ("digicash", gettext("by DigiCash"))),
-        ("BITCOIN_ENABLED", ("bitcoin", gettext("by bitcoin"))),
-        ("ETHEREUM_ENABLED", ("ethereum", gettext("by ethereum"))),
-        ("MONERO_ENABLED", ("monero", gettext("by monero"))),
-        ("ZCASH_ENABLED", ("zcash", gettext("by zcash"))),
-    ):
-        if current_app.config[k]:
-            choices.append(v)
+    if current_app.config["DIGICASH_ENABLED"]:
+        choices.append(("digicash", gettext("by DigiCash")))
+
+    for cryptocurrency_label, options in current_app.config["CRYPTOCURRENCIES"].items():
+        if options["ENABLED"]:
+            choices.append(
+                (
+                    cryptocurrency_label,
+                    " ".format((gettext("by"), options)),
+                ),
+            )
+
     form.payment.choices = choices
 
     if form.validate_on_submit():
@@ -87,22 +90,16 @@ def index():
         )
         xml_data["address"] = re.sub("\s+", " ", xml_data["address"])
 
-        if form.payment.data == "bitcoin":
-            price = subprocess.check_output(
-                [current_app.config["BITCOIN_CONVERSION_SCRIPT"], str(price)]
-            ).decode("utf-8")
-        elif form.payment.data == "ethereum":
-            price = subprocess.check_output(
-                [current_app.config["ETHEREUM_CONVERSION_SCRIPT"], str(price)]
-            ).decode("utf-8")
-        elif form.payment.data == "monero":
-            price = subprocess.check_output(
-                [current_app.config["MONERO_CONVERSION_SCRIPT"], str(price)]
-            ).decode("utf-8")
-        elif form.payment.data == "zcash":
-            price = subprocess.check_output(
-                [current_app.config["ZCASH_CONVERSION_SCRIPT"], str(price)]
-            ).decode("utf-8")
+        if form.payment.data in current_app.config["CRYPTOCURRENCIES"]:
+            price = subprocess.run(
+                [
+                    current_app.config["CRYPTOCURRENCIES_CONVERSION_SCRIPT"],
+                    str(price),
+                    form.payment.data,
+                ],
+                capture_output=True,
+                encoding="utf-8",
+            ).stdout
         elif form.payment.data == "digicash":
             price = price * 100