diff --git a/chainlib/eth/block.py b/chainlib/eth/block.py
index 11c2cbe..e2bf10c 100644
--- a/chainlib/eth/block.py
+++ b/chainlib/eth/block.py
@@ -36,7 +36,6 @@ def block_by_number(n, include_tx=True, id_generator=None):
     """Implements chainlib.interface.ChainInterface method
     """
     hx = strip_0x(hex(n))
-    sys.stderr.write('hx {} {}\n'.format(n, hx))
     nhx = add_0x(compact(hx), compact_value=True)
     j = JSONRPCRequest(id_generator)
     o = j.template()
diff --git a/chainlib/eth/data/env/env.ini b/chainlib/eth/data/env/env.ini
new file mode 100644
index 0000000..1520993
--- /dev/null
+++ b/chainlib/eth/data/env/env.ini
@@ -0,0 +1,2 @@
+[rpc]
+provider = Fully-qualified URL to EVM node's RPC endpoint.