diff --git a/src/transport/msg_providers/onchain_transport.py b/src/transport/msg_providers/onchain_transport.py
index fa70c7d1..19933294 100644
--- a/src/transport/msg_providers/onchain_transport.py
+++ b/src/transport/msg_providers/onchain_transport.py
@@ -4,6 +4,7 @@
 from enum import StrEnum
 from typing import Any, List, Optional
 
+from cryptography.verify_signature import compute_vs
 from eth_account.account import VRS
 from eth_typing import ChecksumAddress, HexStr
 from schema import Schema
@@ -45,8 +46,9 @@
 
 
 def signature_to_r_vs(signature: bytes) -> tuple[VRS, VRS]:
-    r, _vs = signature[:32], signature[32:]
-    return HexStr(bytes_to_hex_string(r)), HexStr(bytes_to_hex_string(_vs))
+    r, s, v = signature[:32], signature[32:64], signature[64:]
+    _vs = compute_vs(v, HexStr(s))
+    return HexStr(bytes_to_hex_string(r)), HexStr(_vs)
 
 
 class EventParser(abc.ABC):
@@ -231,7 +233,6 @@ def _fetch_messages(self) -> List[Any]:
 
         filter_params = FilterParams(
             fromBlock=from_block,
-            toBlock=latest_block_number,
             address=self._onchain_address,
             topics=[self._topics],
         )
diff --git a/tests/transport/test_onchain_transport.py b/tests/transport/test_data_bus.py
similarity index 99%
rename from tests/transport/test_onchain_transport.py
rename to tests/transport/test_data_bus.py
index 7026df92..fd734928 100644
--- a/tests/transport/test_onchain_transport.py
+++ b/tests/transport/test_data_bus.py
@@ -106,7 +106,7 @@ def mock_receipts(w3: Web3) -> list[EventData]:
                             40,
                             2,
                             '0x42eef33d13c4440627c3fab6e3abee85af796ae6f77dcade628b183640b519d0',
-                            '0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000',
+                            '0x0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000',
                             3,
                             ('0x0000000000000000000000000000000000000000000000000000000000000000',),
                         )