diff --git a/payments/backends/bitcoin.py b/payments/backends/bitcoin.py
index b168920..8e200ec 100644
--- a/payments/backends/bitcoin.py
+++ b/payments/backends/bitcoin.py
@@ -103,6 +103,6 @@ class BitcoinBackend(BackendBase):
     def get_ext_url(self, payment):
         if not payment.backend_extid:
             return None
-        return 'http://blockr.io/address/info/%s' % payment.backend_extid
+        return 'https://blockstream.info/address/%s' % payment.backend_extid