diff --git a/neurons/miner.py b/neurons/miner.py
index 64b3a05..c8c81aa 100644
--- a/neurons/miner.py
+++ b/neurons/miner.py
@@ -21,6 +21,8 @@
 import typing
 import asyncio
 import bittensor as bt
+import logging
+logging.getLogger("bittensor").propagate = False
 
 # Bittensor Miner tensorusd:
 import tensorusd
diff --git a/refund.py b/refund.py
new file mode 100644
index 0000000..31d7915
--- /dev/null
+++ b/refund.py
@@ -0,0 +1,114 @@
+"""
+Check whether bids for a given auction ID have been refunded.
+
+COLDKEY_PASSWORD is read from .env automatically.
+
+Usage:
+    uv run refund.py \
+        --netuid 421 \
+        --subtensor.network test \
+        --wallet.name test \
+        --wallet.hotkey default \
+        --logging.info
+"""
+
+import asyncio
+import argparse
+import os
+
+import bittensor as bt
+from dotenv import load_dotenv
+import logging
+logging.getLogger("bittensor").propagate = False
+
+from tensorusd.auction.types import AuctionEvent, AuctionEventType
+from tensorusd.auction.contract import TensorUSDAuctionContract, create_substrate_interface
+from tensorusd.miner.auction_manager import MinerAuctionManager
+
+load_dotenv()
+
+# Hardcode the auction ID to check
+AUCTION_ID = 9
+
+
+def build_config() -> bt.Config:
+    parser = argparse.ArgumentParser(description="Check auction bid refund status")
+    bt.Wallet.add_args(parser)
+    bt.Subtensor.add_args(parser)
+    bt.logging.add_args(parser)
+
+    parser.add_argument(
+        "--auction_contract.address",
+        type=str,
+        default=os.getenv("AUCTION_CONTRACT_ADDRESS"),
+        required=os.getenv("AUCTION_CONTRACT_ADDRESS") is None,
+        help="TensorUSD Auction contract address (SS58).",
+    )
+
+    return bt.Config(parser)
+
+
+async def main():
+    config = build_config()
+    bt.logging(config=config)
+
+    # Unlock wallet — coldkey is the bidder, hotkey is the signing keypair
+    coldkey_password = os.getenv("COLDKEY_PASSWORD")
+    if not coldkey_password:
+        bt.logging.error("COLDKEY_PASSWORD not set in .env. Exiting.")
+        return
+    wallet = bt.Wallet(config=config)
+    wallet.coldkey_file.save_password_to_env(coldkey_password)
+    wallet.unlock_coldkey()
+    bt.logging.info(f"Wallet ready — coldkey: {wallet.coldkey.ss58_address}")
+
+    # Connect to chain
+    subtensor = bt.Subtensor(config=config)
+    substrate = create_substrate_interface(subtensor.chain_endpoint)
+
+    auction_contract = TensorUSDAuctionContract(
+        substrate=substrate,
+        contract_address=config.auction_contract.address,
+        metadata_path="tensorusd/abis/tusdt_auction.json",
+        wallet=wallet,
+    )
+
+    # Pre-checks: auction must exist and be finalized before doing anything
+    bt.logging.info(f"Fetching auction {AUCTION_ID} from chain ...")
+    auction = auction_contract.get_auction(AUCTION_ID)
+
+    if auction is None:
+        bt.logging.error(f"Auction {AUCTION_ID} not found on chain. Exiting.")
+        return
+
+    if not auction.is_finalized:
+        bt.logging.warning(
+            f"Auction {AUCTION_ID} is not finalized yet. "
+            f"highest_bid={auction.highest_bid}, "
+            f"highest_bidder={auction.highest_bidder}. Exiting."
+        )
+        return
+
+    # vault_contract/strategy/tusdt not needed for handle_auction_finalized
+    manager = MinerAuctionManager(
+        auction_contract=auction_contract,
+        vault_contract=None,
+        strategy=None,
+        wallet=wallet,
+    )
+
+    # Build event using real on-chain winner data
+    event = AuctionEvent(
+        event_type=AuctionEventType.FINALIZED,
+        block_number=0,
+        auction_id=AUCTION_ID,
+        winner=auction.highest_bidder,
+        highest_bid=auction.highest_bid,
+    )
+
+    bt.logging.info(f"Checking refund status for auction_id={AUCTION_ID} ...")
+    await manager.handle_auction_finalized(event)
+
+
+if __name__ == "__main__":
+    asyncio.run(main())
\ No newline at end of file
diff --git a/tensorusd/abis/tusdt_auction.json b/tensorusd/abis/tusdt_auction.json
index cbb09d0..f01b194 100644
--- a/tensorusd/abis/tusdt_auction.json
+++ b/tensorusd/abis/tusdt_auction.json
@@ -1,6 +1,6 @@
 {
   "source": {
-    "hash": "0xbc85bef428ab060dc2d806901d10400e7c59f69fc2df46a014e801614e71587e",
+    "hash": "0x1fc0856fb4bdf701e67c80582d75d440bc6aa99336809c79382865f70f24fc9f",
     "language": "ink! 5.1.1",
     "compiler": "rustc 1.93.0",
     "build_info": {
@@ -34,6 +34,15 @@
               "type": 0
             }
           },
+          {
+            "label": "admin",
+            "type": {
+              "displayName": [
+                "AccountId"
+              ],
+              "type": 0
+            }
+          },
           {
             "label": "token_address",
             "type": {
@@ -45,7 +54,9 @@
           }
         ],
         "default": false,
-        "docs": [],
+        "docs": [
+          "Initializes the auction contract with owner, admin, and token contract reference."
+        ],
         "label": "new",
         "payable": false,
         "returnType": {
@@ -53,7 +64,7 @@
             "ink_primitives",
             "ConstructorResult"
           ],
-          "type": 34
+          "type": 38
         },
         "selector": "0x9bae9d5e"
       }
@@ -82,13 +93,13 @@
         "displayName": [
           "ChainExtension"
         ],
-        "type": 56
+        "type": 60
       },
       "hash": {
         "displayName": [
           "Hash"
         ],
-        "type": 55
+        "type": 59
       },
       "maxEventTopics": 4,
       "staticBufferSize": 16384,
@@ -264,9 +275,9 @@
             "label": "winner",
             "type": {
               "displayName": [
-                "Option"
+                "AccountId"
               ],
-              "type": 8
+              "type": 0
             }
           },
           {
@@ -279,12 +290,34 @@
               ],
               "type": 4
             }
+          },
+          {
+            "docs": [],
+            "indexed": false,
+            "label": "debt_balance",
+            "type": {
+              "displayName": [
+                "Balance"
+              ],
+              "type": 4
+            }
+          },
+          {
+            "docs": [],
+            "indexed": false,
+            "label": "highest_bid_metadata",
+            "type": {
+              "displayName": [
+                "Option"
+              ],
+              "type": 17
+            }
           }
         ],
         "docs": [],
         "label": "AuctionFinalized",
         "module_path": "tusdt_auction::auction",
-        "signature_topic": "0xecb6c55d94a9aac8b4e207a8cb763f4460b8e570530c936dff17a77a009fb26e"
+        "signature_topic": "0x2bb1b99d11a544c4702e6bb53e1eaea4a6f257ac8d2e41b9c747027662fadd53"
       },
       {
         "args": [
@@ -374,7 +407,7 @@
         "ink",
         "LangError"
       ],
-      "type": 35
+      "type": 39
     },
     "messages": [
       {
@@ -421,12 +454,14 @@
               "displayName": [
                 "Option"
               ],
-              "type": 36
+              "type": 40
             }
           }
         ],
         "default": false,
-        "docs": [],
+        "docs": [
+          " Creates a new liquidation auction for a vault with specified collateral and debt, returning the auction ID."
+        ],
         "label": "create_auction",
         "mutates": true,
         "payable": false,
@@ -435,7 +470,7 @@
             "ink",
             "MessageResult"
           ],
-          "type": 37
+          "type": 41
         },
         "selector": "0xd6cd59d7"
       },
@@ -470,7 +505,9 @@
           }
         ],
         "default": false,
-        "docs": [],
+        "docs": [
+          " Places a bid on an auction, transferring the bid amount and updating the highest bid if applicable."
+        ],
         "label": "place_bid",
         "mutates": true,
         "payable": false,
@@ -479,7 +516,7 @@
             "ink",
             "MessageResult"
           ],
-          "type": 37
+          "type": 41
         },
         "selector": "0x441cccf2"
       },
@@ -496,7 +533,9 @@
           }
         ],
         "default": false,
-        "docs": [],
+        "docs": [
+          " Finalizes an auction after it has ended, marking the highest bidder as winner."
+        ],
         "label": "finalize_auction",
         "mutates": true,
         "payable": false,
@@ -505,7 +544,7 @@
             "ink",
             "MessageResult"
           ],
-          "type": 40
+          "type": 44
         },
         "selector": "0x28dd27b4"
       },
@@ -531,7 +570,9 @@
           }
         ],
         "default": false,
-        "docs": [],
+        "docs": [
+          " Withdraws refund for a losing bid after the auction is finalized."
+        ],
         "label": "withdraw_refund",
         "mutates": true,
         "payable": false,
@@ -540,7 +581,7 @@
             "ink",
             "MessageResult"
           ],
-          "type": 40
+          "type": 44
         },
         "selector": "0xb98ba333"
       },
@@ -557,7 +598,9 @@
           }
         ],
         "default": false,
-        "docs": [],
+        "docs": [
+          " Retrieves the details of an auction by its ID."
+        ],
         "label": "get_auction",
         "mutates": false,
         "payable": false,
@@ -566,7 +609,7 @@
             "ink",
             "MessageResult"
           ],
-          "type": 42
+          "type": 46
         },
         "selector": "0x15a41cb5"
       },
@@ -592,7 +635,9 @@
           }
         ],
         "default": false,
-        "docs": [],
+        "docs": [
+          " Returns the active auction ID for a vault, or None if no active auction exists."
+        ],
         "label": "get_active_vault_auction",
         "mutates": false,
         "payable": false,
@@ -601,7 +646,7 @@
             "ink",
             "MessageResult"
           ],
-          "type": 44
+          "type": 48
         },
         "selector": "0x9b023efc"
       },
@@ -627,7 +672,9 @@
           }
         ],
         "default": false,
-        "docs": [],
+        "docs": [
+          " Retrieves a specific bid from an auction by auction ID and bid ID."
+        ],
         "label": "get_bid",
         "mutates": false,
         "payable": false,
@@ -636,10 +683,47 @@
             "ink",
             "MessageResult"
           ],
-          "type": 45
+          "type": 49
         },
         "selector": "0xdc2d27f1"
       },
+      {
+        "args": [
+          {
+            "label": "auction_id",
+            "type": {
+              "displayName": [
+                "u32"
+              ],
+              "type": 3
+            }
+          },
+          {
+            "label": "bidder",
+            "type": {
+              "displayName": [
+                "AccountId"
+              ],
+              "type": 0
+            }
+          }
+        ],
+        "default": false,
+        "docs": [
+          " Retrieves a specific bid from an auction by auction ID and Bidder."
+        ],
+        "label": "get_auction_bid",
+        "mutates": false,
+        "payable": false,
+        "returnType": {
+          "displayName": [
+            "ink",
+            "MessageResult"
+          ],
+          "type": 49
+        },
+        "selector": "0xa594e324"
+      },
       {
         "args": [
           {
@@ -662,7 +746,9 @@
           }
         ],
         "default": false,
-        "docs": [],
+        "docs": [
+          " Returns a paginated list of all bids placed on an auction."
+        ],
         "label": "get_bids",
         "mutates": false,
         "payable": false,
@@ -671,14 +757,16 @@
             "ink",
             "MessageResult"
           ],
-          "type": 47
+          "type": 51
         },
         "selector": "0x03302346"
       },
       {
         "args": [],
         "default": false,
-        "docs": [],
+        "docs": [
+          " Returns the total number of auctions created."
+        ],
         "label": "get_total_auctions_count",
         "mutates": false,
         "payable": false,
@@ -687,14 +775,16 @@
             "ink",
             "MessageResult"
           ],
-          "type": 50
+          "type": 54
         },
         "selector": "0x2700a61f"
       },
       {
         "args": [],
         "default": false,
-        "docs": [],
+        "docs": [
+          " Returns the total number of active auctions."
+        ],
         "label": "get_active_auctions_count",
         "mutates": false,
         "payable": false,
@@ -703,7 +793,7 @@
             "ink",
             "MessageResult"
           ],
-          "type": 50
+          "type": 54
         },
         "selector": "0x996f931c"
       },
@@ -720,7 +810,9 @@
           }
         ],
         "default": false,
-        "docs": [],
+        "docs": [
+          " Returns a paginated list of all auctions."
+        ],
         "label": "get_all_auctions",
         "mutates": false,
         "payable": false,
@@ -729,7 +821,7 @@
             "ink",
             "MessageResult"
           ],
-          "type": 51
+          "type": 55
         },
         "selector": "0x95baa3db"
       },
@@ -746,7 +838,9 @@
           }
         ],
         "default": false,
-        "docs": [],
+        "docs": [
+          " Returns a paginated list of active auctions."
+        ],
         "label": "get_active_auctions",
         "mutates": false,
         "payable": false,
@@ -755,14 +849,16 @@
             "ink",
             "MessageResult"
           ],
-          "type": 51
+          "type": 55
         },
         "selector": "0x038c0d69"
       },
       {
         "args": [],
         "default": false,
-        "docs": [],
+        "docs": [
+          " Returns the owner account ID."
+        ],
         "label": "owner",
         "mutates": false,
         "payable": false,
@@ -771,9 +867,27 @@
             "ink",
             "MessageResult"
           ],
-          "type": 54
+          "type": 58
         },
         "selector": "0xfeaea4fa"
+      },
+      {
+        "args": [],
+        "default": false,
+        "docs": [
+          " Returns the admin account ID."
+        ],
+        "label": "admin",
+        "mutates": false,
+        "payable": false,
+        "returnType": {
+          "displayName": [
+            "ink",
+            "MessageResult"
+          ],
+          "type": 58
+        },
+        "selector": "0x1aa66b39"
       }
     ]
   },
@@ -791,6 +905,15 @@
               },
               "name": "owner"
             },
+            {
+              "layout": {
+                "leaf": {
+                  "key": "0x00000000",
+                  "ty": 0
+                }
+              },
+              "name": "admin"
+            },
             {
               "layout": {
                 "struct": {
@@ -1093,6 +1216,21 @@
               },
               "name": "auction_bids"
             },
+            {
+              "layout": {
+                "root": {
+                  "layout": {
+                    "leaf": {
+                      "key": "0x68dcca1b",
+                      "ty": 3
+                    }
+                  },
+                  "root_key": "0x68dcca1b",
+                  "ty": 21
+                }
+              },
+              "name": "auction_bidder_bids"
+            },
             {
               "layout": {
                 "root": {
@@ -1103,7 +1241,7 @@
                     }
                   },
                   "root_key": "0xafa18ddb",
-                  "ty": 21
+                  "ty": 25
                 }
               },
               "name": "active_vault_auction"
@@ -1127,7 +1265,7 @@
                     }
                   },
                   "root_key": "0xd9c4d144",
-                  "ty": 25
+                  "ty": 29
                 }
               },
               "name": "active_auctions"
@@ -1142,7 +1280,7 @@
                     }
                   },
                   "root_key": "0xf0e8b11f",
-                  "ty": 28
+                  "ty": 32
                 }
               },
               "name": "active_auction_indices"
@@ -1152,7 +1290,7 @@
         }
       },
       "root_key": "0x00000000",
-      "ty": 31
+      "ty": 35
     }
   },
   "types": [
@@ -1666,8 +1804,8 @@
       "type": {
         "def": {
           "tuple": [
-            0,
-            3
+            3,
+            0
           ]
         }
       }
@@ -1723,7 +1861,7 @@
         "params": [
           {
             "name": "K",
-            "type": 3
+            "type": 26
           },
           {
             "name": "V",
@@ -1731,7 +1869,7 @@
           },
           {
             "name": "KeyType",
-            "type": 26
+            "type": 27
           }
         ],
         "path": [
@@ -1744,6 +1882,17 @@
     },
     {
       "id": 26,
+      "type": {
+        "def": {
+          "tuple": [
+            0,
+            3
+          ]
+        }
+      }
+    },
+    {
+      "id": 27,
       "type": {
         "def": {
           "composite": {}
@@ -1755,7 +1904,7 @@
           },
           {
             "name": "R",
-            "type": 27
+            "type": 28
           }
         ],
         "path": [
@@ -1766,7 +1915,7 @@
       }
     },
     {
-      "id": 27,
+      "id": 28,
       "type": {
         "def": {
           "composite": {}
@@ -1785,7 +1934,7 @@
       }
     },
     {
-      "id": 28,
+      "id": 29,
       "type": {
         "def": {
           "composite": {}
@@ -1801,7 +1950,7 @@
           },
           {
             "name": "KeyType",
-            "type": 29
+            "type": 30
           }
         ],
         "path": [
@@ -1813,7 +1962,7 @@
       }
     },
     {
-      "id": 29,
+      "id": 30,
       "type": {
         "def": {
           "composite": {}
@@ -1825,7 +1974,7 @@
           },
           {
             "name": "R",
-            "type": 30
+            "type": 31
           }
         ],
         "path": [
@@ -1836,7 +1985,7 @@
       }
     },
     {
-      "id": 30,
+      "id": 31,
       "type": {
         "def": {
           "composite": {}
@@ -1855,7 +2004,77 @@
       }
     },
     {
-      "id": 31,
+      "id": 32,
+      "type": {
+        "def": {
+          "composite": {}
+        },
+        "params": [
+          {
+            "name": "K",
+            "type": 3
+          },
+          {
+            "name": "V",
+            "type": 3
+          },
+          {
+            "name": "KeyType",
+            "type": 33
+          }
+        ],
+        "path": [
+          "ink_storage",
+          "lazy",
+          "mapping",
+          "Mapping"
+        ]
+      }
+    },
+    {
+      "id": 33,
+      "type": {
+        "def": {
+          "composite": {}
+        },
+        "params": [
+          {
+            "name": "L",
+            "type": 11
+          },
+          {
+            "name": "R",
+            "type": 34
+          }
+        ],
+        "path": [
+          "ink_storage_traits",
+          "impls",
+          "ResolverKey"
+        ]
+      }
+    },
+    {
+      "id": 34,
+      "type": {
+        "def": {
+          "composite": {}
+        },
+        "params": [
+          {
+            "name": "ParentKey",
+            "type": 13
+          }
+        ],
+        "path": [
+          "ink_storage_traits",
+          "impls",
+          "ManualKey"
+        ]
+      }
+    },
+    {
+      "id": 35,
       "type": {
         "def": {
           "composite": {
@@ -1865,9 +2084,14 @@
                 "type": 0,
                 "typeName": "<AccountId as::ink::storage::traits::AutoStorableHint<::ink::\nstorage::traits::ManualKey<401197403u32, ()>,>>::Type"
               },
+              {
+                "name": "admin",
+                "type": 0,
+                "typeName": "<AccountId as::ink::storage::traits::AutoStorableHint<::ink::\nstorage::traits::ManualKey<2591091493u32, ()>,>>::Type"
+              },
               {
                 "name": "token",
-                "type": 32,
+                "type": 36,
                 "typeName": "<TusdtErc20Ref as::ink::storage::traits::AutoStorableHint<::ink::\nstorage::traits::ManualKey<1727889415u32, ()>,>>::Type"
               },
               {
@@ -1886,8 +2110,13 @@
                 "typeName": "<Mapping<(u32, u32), Bid> as::ink::storage::traits::\nAutoStorableHint<::ink::storage::traits::ManualKey<2050671336u32,\n()>,>>::Type"
               },
               {
-                "name": "active_vault_auction",
+                "name": "auction_bidder_bids",
                 "type": 21,
+                "typeName": "<Mapping<(u32, AccountId), u32> as::ink::storage::traits::\nAutoStorableHint<::ink::storage::traits::ManualKey<466279528u32, ()\n>,>>::Type"
+              },
+              {
+                "name": "active_vault_auction",
+                "type": 25,
                 "typeName": "<Mapping<(AccountId, u32), u32> as::ink::storage::traits::\nAutoStorableHint<::ink::storage::traits::ManualKey<3683492271u32,\n()>,>>::Type"
               },
               {
@@ -1897,12 +2126,12 @@
               },
               {
                 "name": "active_auctions",
-                "type": 25,
+                "type": 29,
                 "typeName": "<Mapping<u32, u32> as::ink::storage::traits::AutoStorableHint<::\nink::storage::traits::ManualKey<1154598105u32, ()>,>>::Type"
               },
               {
                 "name": "active_auction_indices",
-                "type": 28,
+                "type": 32,
                 "typeName": "<Mapping<u32, u32> as::ink::storage::traits::AutoStorableHint<::\nink::storage::traits::ManualKey<531753200u32, ()>,>>::Type"
               }
             ]
@@ -1916,14 +2145,14 @@
       }
     },
     {
-      "id": 32,
+      "id": 36,
       "type": {
         "def": {
           "composite": {
             "fields": [
               {
                 "name": "inner",
-                "type": 33,
+                "type": 37,
                 "typeName": "<TusdtErc20 as::ink::codegen::ContractCallBuilder>::Type"
               }
             ]
@@ -1937,7 +2166,7 @@
       }
     },
     {
-      "id": 33,
+      "id": 37,
       "type": {
         "def": {
           "composite": {
@@ -1958,7 +2187,7 @@
       }
     },
     {
-      "id": 34,
+      "id": 38,
       "type": {
         "def": {
           "variant": {
@@ -1975,7 +2204,7 @@
               {
                 "fields": [
                   {
-                    "type": 35
+                    "type": 39
                   }
                 ],
                 "index": 1,
@@ -1991,7 +2220,7 @@
           },
           {
             "name": "E",
-            "type": 35
+            "type": 39
           }
         ],
         "path": [
@@ -2000,7 +2229,7 @@
       }
     },
     {
-      "id": 35,
+      "id": 39,
       "type": {
         "def": {
           "variant": {
@@ -2019,7 +2248,7 @@
       }
     },
     {
-      "id": 36,
+      "id": 40,
       "type": {
         "def": {
           "variant": {
@@ -2052,7 +2281,7 @@
       }
     },
     {
-      "id": 37,
+      "id": 41,
       "type": {
         "def": {
           "variant": {
@@ -2060,7 +2289,7 @@
               {
                 "fields": [
                   {
-                    "type": 38
+                    "type": 42
                   }
                 ],
                 "index": 0,
@@ -2069,7 +2298,7 @@
               {
                 "fields": [
                   {
-                    "type": 35
+                    "type": 39
                   }
                 ],
                 "index": 1,
@@ -2081,11 +2310,11 @@
         "params": [
           {
             "name": "T",
-            "type": 38
+            "type": 42
           },
           {
             "name": "E",
-            "type": 35
+            "type": 39
           }
         ],
         "path": [
@@ -2094,7 +2323,7 @@
       }
     },
     {
-      "id": 38,
+      "id": 42,
       "type": {
         "def": {
           "variant": {
@@ -2111,7 +2340,7 @@
               {
                 "fields": [
                   {
-                    "type": 39
+                    "type": 43
                   }
                 ],
                 "index": 1,
@@ -2127,7 +2356,7 @@
           },
           {
             "name": "E",
-            "type": 39
+            "type": 43
           }
         ],
         "path": [
@@ -2136,7 +2365,7 @@
       }
     },
     {
-      "id": 39,
+      "id": 43,
       "type": {
         "def": {
           "variant": {
@@ -2147,58 +2376,66 @@
               },
               {
                 "index": 1,
-                "name": "AuctionNotFound"
+                "name": "NotAdmin"
               },
               {
                 "index": 2,
-                "name": "BidNotFound"
+                "name": "AuctionNotFound"
               },
               {
                 "index": 3,
-                "name": "NotBidder"
+                "name": "BidNotFound"
               },
               {
                 "index": 4,
-                "name": "AuctionAlreadyExistsForVault"
+                "name": "NotBidder"
               },
               {
                 "index": 5,
-                "name": "BidBelowDebtBalance"
+                "name": "AuctionAlreadyExistsForVault"
               },
               {
                 "index": 6,
-                "name": "AuctionEnded"
+                "name": "BidBelowDebtBalance"
               },
               {
                 "index": 7,
-                "name": "AuctionNotEnded"
+                "name": "AuctionEnded"
               },
               {
                 "index": 8,
-                "name": "AuctionFinalized"
+                "name": "AuctionNotEnded"
               },
               {
                 "index": 9,
-                "name": "OutOfBoundPage"
+                "name": "AuctionFinalized"
               },
               {
                 "index": 10,
-                "name": "WinningBidLocked"
+                "name": "AuctionHasNoBids"
               },
               {
                 "index": 11,
-                "name": "InvalidDuration"
+                "name": "WinningBidLocked"
               },
               {
                 "index": 12,
-                "name": "TransferFailed"
+                "name": "InvalidDuration"
               },
               {
                 "index": 13,
-                "name": "NoRefundAvailable"
+                "name": "TransferFailed"
               },
               {
                 "index": 14,
+                "name": "NoRefundAvailable"
+              },
+              {
+                "index": 15,
+                "name": "BidAmountNotIncreased"
+              },
+              {
+                "index": 16,
                 "name": "ArithmeticError"
               }
             ]
@@ -2212,7 +2449,7 @@
       }
     },
     {
-      "id": 40,
+      "id": 44,
       "type": {
         "def": {
           "variant": {
@@ -2220,7 +2457,7 @@
               {
                 "fields": [
                   {
-                    "type": 41
+                    "type": 45
                   }
                 ],
                 "index": 0,
@@ -2229,7 +2466,7 @@
               {
                 "fields": [
                   {
-                    "type": 35
+                    "type": 39
                   }
                 ],
                 "index": 1,
@@ -2241,11 +2478,11 @@
         "params": [
           {
             "name": "T",
-            "type": 41
+            "type": 45
           },
           {
             "name": "E",
-            "type": 35
+            "type": 39
           }
         ],
         "path": [
@@ -2254,7 +2491,7 @@
       }
     },
     {
-      "id": 41,
+      "id": 45,
       "type": {
         "def": {
           "variant": {
@@ -2271,7 +2508,7 @@
               {
                 "fields": [
                   {
-                    "type": 39
+                    "type": 43
                   }
                 ],
                 "index": 1,
@@ -2287,7 +2524,7 @@
           },
           {
             "name": "E",
-            "type": 39
+            "type": 43
           }
         ],
         "path": [
@@ -2296,7 +2533,7 @@
       }
     },
     {
-      "id": 42,
+      "id": 46,
       "type": {
         "def": {
           "variant": {
@@ -2304,7 +2541,7 @@
               {
                 "fields": [
                   {
-                    "type": 43
+                    "type": 47
                   }
                 ],
                 "index": 0,
@@ -2313,7 +2550,7 @@
               {
                 "fields": [
                   {
-                    "type": 35
+                    "type": 39
                   }
                 ],
                 "index": 1,
@@ -2325,11 +2562,11 @@
         "params": [
           {
             "name": "T",
-            "type": 43
+            "type": 47
           },
           {
             "name": "E",
-            "type": 35
+            "type": 39
           }
         ],
         "path": [
@@ -2338,7 +2575,7 @@
       }
     },
     {
-      "id": 43,
+      "id": 47,
       "type": {
         "def": {
           "variant": {
@@ -2371,7 +2608,7 @@
       }
     },
     {
-      "id": 44,
+      "id": 48,
       "type": {
         "def": {
           "variant": {
@@ -2388,7 +2625,7 @@
               {
                 "fields": [
                   {
-                    "type": 35
+                    "type": 39
                   }
                 ],
                 "index": 1,
@@ -2404,7 +2641,7 @@
           },
           {
             "name": "E",
-            "type": 35
+            "type": 39
           }
         ],
         "path": [
@@ -2413,7 +2650,7 @@
       }
     },
     {
-      "id": 45,
+      "id": 49,
       "type": {
         "def": {
           "variant": {
@@ -2421,7 +2658,7 @@
               {
                 "fields": [
                   {
-                    "type": 46
+                    "type": 50
                   }
                 ],
                 "index": 0,
@@ -2430,7 +2667,7 @@
               {
                 "fields": [
                   {
-                    "type": 35
+                    "type": 39
                   }
                 ],
                 "index": 1,
@@ -2442,11 +2679,11 @@
         "params": [
           {
             "name": "T",
-            "type": 46
+            "type": 50
           },
           {
             "name": "E",
-            "type": 35
+            "type": 39
           }
         ],
         "path": [
@@ -2455,7 +2692,7 @@
       }
     },
     {
-      "id": 46,
+      "id": 50,
       "type": {
         "def": {
           "variant": {
@@ -2488,7 +2725,7 @@
       }
     },
     {
-      "id": 47,
+      "id": 51,
       "type": {
         "def": {
           "variant": {
@@ -2496,7 +2733,7 @@
               {
                 "fields": [
                   {
-                    "type": 48
+                    "type": 52
                   }
                 ],
                 "index": 0,
@@ -2505,7 +2742,7 @@
               {
                 "fields": [
                   {
-                    "type": 35
+                    "type": 39
                   }
                 ],
                 "index": 1,
@@ -2517,11 +2754,11 @@
         "params": [
           {
             "name": "T",
-            "type": 48
+            "type": 52
           },
           {
             "name": "E",
-            "type": 35
+            "type": 39
           }
         ],
         "path": [
@@ -2530,7 +2767,7 @@
       }
     },
     {
-      "id": 48,
+      "id": 52,
       "type": {
         "def": {
           "variant": {
@@ -2538,7 +2775,7 @@
               {
                 "fields": [
                   {
-                    "type": 49
+                    "type": 53
                   }
                 ],
                 "index": 0,
@@ -2547,7 +2784,7 @@
               {
                 "fields": [
                   {
-                    "type": 39
+                    "type": 43
                   }
                 ],
                 "index": 1,
@@ -2559,11 +2796,11 @@
         "params": [
           {
             "name": "T",
-            "type": 49
+            "type": 53
           },
           {
             "name": "E",
-            "type": 39
+            "type": 43
           }
         ],
         "path": [
@@ -2572,7 +2809,7 @@
       }
     },
     {
-      "id": 49,
+      "id": 53,
       "type": {
         "def": {
           "sequence": {
@@ -2582,7 +2819,7 @@
       }
     },
     {
-      "id": 50,
+      "id": 54,
       "type": {
         "def": {
           "variant": {
@@ -2599,7 +2836,7 @@
               {
                 "fields": [
                   {
-                    "type": 35
+                    "type": 39
                   }
                 ],
                 "index": 1,
@@ -2615,7 +2852,7 @@
           },
           {
             "name": "E",
-            "type": 35
+            "type": 39
           }
         ],
         "path": [
@@ -2624,7 +2861,7 @@
       }
     },
     {
-      "id": 51,
+      "id": 55,
       "type": {
         "def": {
           "variant": {
@@ -2632,7 +2869,7 @@
               {
                 "fields": [
                   {
-                    "type": 52
+                    "type": 56
                   }
                 ],
                 "index": 0,
@@ -2641,7 +2878,7 @@
               {
                 "fields": [
                   {
-                    "type": 35
+                    "type": 39
                   }
                 ],
                 "index": 1,
@@ -2653,11 +2890,11 @@
         "params": [
           {
             "name": "T",
-            "type": 52
+            "type": 56
           },
           {
             "name": "E",
-            "type": 35
+            "type": 39
           }
         ],
         "path": [
@@ -2666,7 +2903,7 @@
       }
     },
     {
-      "id": 52,
+      "id": 56,
       "type": {
         "def": {
           "variant": {
@@ -2674,7 +2911,7 @@
               {
                 "fields": [
                   {
-                    "type": 53
+                    "type": 57
                   }
                 ],
                 "index": 0,
@@ -2683,7 +2920,7 @@
               {
                 "fields": [
                   {
-                    "type": 39
+                    "type": 43
                   }
                 ],
                 "index": 1,
@@ -2695,11 +2932,11 @@
         "params": [
           {
             "name": "T",
-            "type": 53
+            "type": 57
           },
           {
             "name": "E",
-            "type": 39
+            "type": 43
           }
         ],
         "path": [
@@ -2708,7 +2945,7 @@
       }
     },
     {
-      "id": 53,
+      "id": 57,
       "type": {
         "def": {
           "sequence": {
@@ -2718,7 +2955,7 @@
       }
     },
     {
-      "id": 54,
+      "id": 58,
       "type": {
         "def": {
           "variant": {
@@ -2735,7 +2972,7 @@
               {
                 "fields": [
                   {
-                    "type": 35
+                    "type": 39
                   }
                 ],
                 "index": 1,
@@ -2751,7 +2988,7 @@
           },
           {
             "name": "E",
-            "type": 35
+            "type": 39
           }
         ],
         "path": [
@@ -2760,7 +2997,7 @@
       }
     },
     {
-      "id": 55,
+      "id": 59,
       "type": {
         "def": {
           "composite": {
@@ -2780,7 +3017,7 @@
       }
     },
     {
-      "id": 56,
+      "id": 60,
       "type": {
         "def": {
           "variant": {}
diff --git a/tensorusd/abis/tusdt_erc20.json b/tensorusd/abis/tusdt_erc20.json
index d1bf793..a9a8c7a 100644
--- a/tensorusd/abis/tusdt_erc20.json
+++ b/tensorusd/abis/tusdt_erc20.json
@@ -1,6 +1,6 @@
 {
   "source": {
-    "hash": "0xb1052e79867a05402777202989487461fbf05bd2ee5661727ca97ecd84fce37b",
+    "hash": "0xeead26f978b237d2ce4d3c7fa1016417651e247c87de79358080c426fe97a17a",
     "language": "ink! 5.1.1",
     "compiler": "rustc 1.93.0",
     "build_info": {
@@ -36,7 +36,9 @@
           }
         ],
         "default": false,
-        "docs": [],
+        "docs": [
+          "Initializes the token contract with the specified owner account."
+        ],
         "label": "new",
         "payable": false,
         "returnType": {
@@ -185,7 +187,9 @@
       {
         "args": [],
         "default": false,
-        "docs": [],
+        "docs": [
+          " Returns the owner account ID."
+        ],
         "label": "owner",
         "mutates": false,
         "payable": false,
@@ -201,7 +205,9 @@
       {
         "args": [],
         "default": false,
-        "docs": [],
+        "docs": [
+          " Returns the total supply of tokens in circulation."
+        ],
         "label": "total_supply",
         "mutates": false,
         "payable": false,
@@ -227,7 +233,9 @@
           }
         ],
         "default": false,
-        "docs": [],
+        "docs": [
+          " Returns the token balance of an account."
+        ],
         "label": "balance_of",
         "mutates": false,
         "payable": false,
@@ -262,7 +270,9 @@
           }
         ],
         "default": false,
-        "docs": [],
+        "docs": [
+          " Returns the amount of tokens that a spender is allowed to transfer from an owner's account."
+        ],
         "label": "allowance",
         "mutates": false,
         "payable": false,
@@ -297,7 +307,9 @@
           }
         ],
         "default": false,
-        "docs": [],
+        "docs": [
+          " Transfers tokens from the caller to a recipient account."
+        ],
         "label": "transfer",
         "mutates": true,
         "payable": false,
@@ -332,7 +344,9 @@
           }
         ],
         "default": false,
-        "docs": [],
+        "docs": [
+          " Mints new tokens and adds them to an account's balance; only callable by owner."
+        ],
         "label": "mint",
         "mutates": true,
         "payable": false,
@@ -367,7 +381,9 @@
           }
         ],
         "default": false,
-        "docs": [],
+        "docs": [
+          " Burns tokens from an account, reducing the total supply; only callable by owner."
+        ],
         "label": "burn",
         "mutates": true,
         "payable": false,
@@ -402,7 +418,9 @@
           }
         ],
         "default": false,
-        "docs": [],
+        "docs": [
+          " Approves a spender to transfer up to a specified amount of tokens on behalf of the caller."
+        ],
         "label": "approve",
         "mutates": true,
         "payable": false,
@@ -446,7 +464,9 @@
           }
         ],
         "default": false,
-        "docs": [],
+        "docs": [
+          " Transfers tokens on behalf of an owner account to a recipient, using the caller's allowance."
+        ],
         "label": "transfer_from",
         "mutates": true,
         "payable": false,
diff --git a/tensorusd/abis/tusdt_vault.json b/tensorusd/abis/tusdt_vault.json
index ef33a66..5f04e9e 100644
--- a/tensorusd/abis/tusdt_vault.json
+++ b/tensorusd/abis/tusdt_vault.json
@@ -1,6 +1,6 @@
 {
   "source": {
-    "hash": "0xba36e326c46f9966fedd54cc4bedd8eb52ef09fbc4f5f209013f9ab33c1e08d3",
+    "hash": "0xf3a92706983fc3140d7172999a5ce93b37fa65c9ef71fef9022128336a1a849f",
     "language": "ink! 5.1.1",
     "compiler": "rustc 1.93.0",
     "build_info": {
@@ -45,7 +45,9 @@
           }
         ],
         "default": false,
-        "docs": [],
+        "docs": [
+          "Initializes the vault contract by instantiating the token and auction contracts with the provided code hashes."
+        ],
         "label": "new",
         "payable": false,
         "returnType": {
@@ -82,7 +84,7 @@
         "displayName": [
           "ChainExtension"
         ],
-        "type": 56
+        "type": 58
       },
       "hash": {
         "displayName": [
@@ -264,9 +266,9 @@
             "label": "winner",
             "type": {
               "displayName": [
-                "Option"
+                "AccountId"
               ],
-              "type": 55
+              "type": 0
             }
           },
           {
@@ -279,12 +281,34 @@
               ],
               "type": 3
             }
+          },
+          {
+            "docs": [],
+            "indexed": false,
+            "label": "debt_balance",
+            "type": {
+              "displayName": [
+                "Balance"
+              ],
+              "type": 3
+            }
+          },
+          {
+            "docs": [],
+            "indexed": false,
+            "label": "highest_bid_metadata",
+            "type": {
+              "displayName": [
+                "Option"
+              ],
+              "type": 55
+            }
           }
         ],
         "docs": [],
         "label": "AuctionFinalized",
         "module_path": "tusdt_auction::auction",
-        "signature_topic": "0xecb6c55d94a9aac8b4e207a8cb763f4460b8e570530c936dff17a77a009fb26e"
+        "signature_topic": "0x2bb1b99d11a544c4702e6bb53e1eaea4a6f257ac8d2e41b9c747027662fadd53"
       },
       {
         "args": [
@@ -337,7 +361,7 @@
               "displayName": [
                 "Option"
               ],
-              "type": 55
+              "type": 57
             }
           },
           {
@@ -348,7 +372,7 @@
               "displayName": [
                 "Option"
               ],
-              "type": 55
+              "type": 57
             }
           },
           {
@@ -616,7 +640,7 @@
               "displayName": [
                 "Option"
               ],
-              "type": 55
+              "type": 57
             }
           },
           {
@@ -740,7 +764,9 @@
           }
         ],
         "default": false,
-        "docs": [],
+        "docs": [
+          " Updates contract parameters (collateral ratio, liquidation ratio, interest rate, etc.) with validation; only callable by owner."
+        ],
         "label": "set_contract_params",
         "mutates": true,
         "payable": false,
@@ -756,7 +782,9 @@
       {
         "args": [],
         "default": false,
-        "docs": [],
+        "docs": [
+          " Creates a new vault for the caller with the transferred collateral and returns the vault ID."
+        ],
         "label": "create_vault",
         "mutates": true,
         "payable": true,
@@ -782,7 +810,9 @@
           }
         ],
         "default": false,
-        "docs": [],
+        "docs": [
+          " Adds the transferred collateral amount to an existing vault."
+        ],
         "label": "add_collateral",
         "mutates": true,
         "payable": true,
@@ -817,7 +847,9 @@
           }
         ],
         "default": false,
-        "docs": [],
+        "docs": [
+          " Borrows tokens against the vault's collateral, validating collateral ratio and accruing interest."
+        ],
         "label": "borrow_token",
         "mutates": true,
         "payable": false,
@@ -852,7 +884,9 @@
           }
         ],
         "default": false,
-        "docs": [],
+        "docs": [
+          " Repays borrowed tokens from a vault, accruing interest and burning the repaid tokens."
+        ],
         "label": "repay_token",
         "mutates": true,
         "payable": false,
@@ -887,7 +921,9 @@
           }
         ],
         "default": false,
-        "docs": [],
+        "docs": [
+          " Releases collateral from a vault while ensuring the remaining collateral maintains the minimum collateral ratio."
+        ],
         "label": "release_collateral",
         "mutates": true,
         "payable": false,
@@ -922,7 +958,9 @@
           }
         ],
         "default": false,
-        "docs": [],
+        "docs": [
+          " Initiates a liquidation auction for an unsafe vault, returning the auction ID if successful."
+        ],
         "label": "trigger_liquidation_auction",
         "mutates": true,
         "payable": false,
@@ -957,7 +995,9 @@
           }
         ],
         "default": false,
-        "docs": [],
+        "docs": [
+          " Settles a finalized liquidation auction, transferring collateral to the winner and clearing vault debt."
+        ],
         "label": "settle_liquidation_auction",
         "mutates": true,
         "payable": false,
@@ -992,7 +1032,9 @@
           }
         ],
         "default": false,
-        "docs": [],
+        "docs": [
+          " Retrieves the vault details for a given owner and vault ID."
+        ],
         "label": "get_vault",
         "mutates": false,
         "payable": false,
@@ -1008,7 +1050,9 @@
       {
         "args": [],
         "default": false,
-        "docs": [],
+        "docs": [
+          " Returns the account ID of the deployed ERC-20 token contract."
+        ],
         "label": "get_token_address",
         "mutates": false,
         "payable": false,
@@ -1024,7 +1068,9 @@
       {
         "args": [],
         "default": false,
-        "docs": [],
+        "docs": [
+          " Returns the account ID of the deployed auction contract."
+        ],
         "label": "get_auction_address",
         "mutates": false,
         "payable": false,
@@ -1040,7 +1086,9 @@
       {
         "args": [],
         "default": false,
-        "docs": [],
+        "docs": [
+          " Returns the current contract parameters (collateral ratio, liquidation ratio, interest rate, etc.) as percentages."
+        ],
         "label": "get_contract_params",
         "mutates": false,
         "payable": false,
@@ -1066,7 +1114,9 @@
           }
         ],
         "default": false,
-        "docs": [],
+        "docs": [
+          " Sets the collateral-to-token price ratio for testing purposes; only callable by owner."
+        ],
         "label": "set_collateral_token_price_for_testing",
         "mutates": true,
         "payable": false,
@@ -1082,7 +1132,9 @@
       {
         "args": [],
         "default": false,
-        "docs": [],
+        "docs": [
+          " Returns the current collateral-to-token price ratio used for calculations."
+        ],
         "label": "get_collateral_token_price_for_testing",
         "mutates": false,
         "payable": false,
@@ -1117,7 +1169,9 @@
           }
         ],
         "default": false,
-        "docs": [],
+        "docs": [
+          " Returns the collateral balance for a vault, or None if the vault does not exist."
+        ],
         "label": "get_vault_collateral_balance",
         "mutates": false,
         "payable": false,
@@ -1133,7 +1187,9 @@
       {
         "args": [],
         "default": false,
-        "docs": [],
+        "docs": [
+          " Returns the total collateral balance across all vaults."
+        ],
         "label": "get_total_collateral_balance",
         "mutates": false,
         "payable": false,
@@ -1168,7 +1224,9 @@
           }
         ],
         "default": false,
-        "docs": [],
+        "docs": [
+          " Calculates the token value of a vault's collateral based on the current price ratio."
+        ],
         "label": "get_vault_collateral_value",
         "mutates": false,
         "payable": false,
@@ -1203,7 +1261,9 @@
           }
         ],
         "default": false,
-        "docs": [],
+        "docs": [
+          " Returns the maximum token amount that can be borrowed against a vault's collateral."
+        ],
         "label": "get_max_borrow",
         "mutates": false,
         "payable": false,
@@ -1238,7 +1298,9 @@
           }
         ],
         "default": false,
-        "docs": [],
+        "docs": [
+          " Returns the auction ID for an active liquidation of a vault, or None if there is no active liquidation."
+        ],
         "label": "get_liquidation_auction_id",
         "mutates": false,
         "payable": false,
@@ -1254,7 +1316,9 @@
       {
         "args": [],
         "default": false,
-        "docs": [],
+        "docs": [
+          " Returns the total number of vaults created across all owners."
+        ],
         "label": "get_total_vaults_count",
         "mutates": false,
         "payable": false,
@@ -1280,7 +1344,9 @@
           }
         ],
         "default": false,
-        "docs": [],
+        "docs": [
+          " Returns the number of vaults owned by a specific account."
+        ],
         "label": "get_vaults_count",
         "mutates": false,
         "payable": false,
@@ -1315,7 +1381,9 @@
           }
         ],
         "default": false,
-        "docs": [],
+        "docs": [
+          " Returns a paginated list of vaults owned by a specific account."
+        ],
         "label": "get_vaults",
         "mutates": false,
         "payable": false,
@@ -1341,7 +1409,9 @@
           }
         ],
         "default": false,
-        "docs": [],
+        "docs": [
+          " Returns a paginated list of all vaults across all owners."
+        ],
         "label": "get_all_vaults",
         "mutates": false,
         "payable": false,
@@ -2609,58 +2679,54 @@
               },
               {
                 "index": 5,
-                "name": "OutOfBoundPage"
-              },
-              {
-                "index": 6,
                 "name": "InvalidRatio"
               },
               {
-                "index": 7,
+                "index": 6,
                 "name": "InvalidAuctionDuration"
               },
               {
-                "index": 8,
+                "index": 7,
                 "name": "CollateralRatioExceeded"
               },
               {
-                "index": 9,
+                "index": 8,
                 "name": "LiquidationRatioExceeded"
               },
               {
-                "index": 10,
+                "index": 9,
                 "name": "RepayAmountTooHigh"
               },
               {
-                "index": 11,
+                "index": 10,
                 "name": "VaultInLiquidation"
               },
               {
-                "index": 12,
+                "index": 11,
                 "name": "NotLiquidatable"
               },
               {
-                "index": 13,
+                "index": 12,
                 "name": "LiquidationAuctionExists"
               },
               {
-                "index": 14,
+                "index": 13,
                 "name": "AuctionContractCallFailed"
               },
               {
-                "index": 15,
+                "index": 14,
                 "name": "AuctionNotFound"
               },
               {
-                "index": 16,
+                "index": 15,
                 "name": "AuctionNotFinalized"
               },
               {
-                "index": 17,
+                "index": 16,
                 "name": "ArithmeticError"
               },
               {
-                "index": 18,
+                "index": 17,
                 "name": "NotContractOwner"
               }
             ]
@@ -3330,6 +3396,60 @@
     },
     {
       "id": 55,
+      "type": {
+        "def": {
+          "variant": {
+            "variants": [
+              {
+                "index": 0,
+                "name": "None"
+              },
+              {
+                "fields": [
+                  {
+                    "type": 56
+                  }
+                ],
+                "index": 1,
+                "name": "Some"
+              }
+            ]
+          }
+        },
+        "params": [
+          {
+            "name": "T",
+            "type": 56
+          }
+        ],
+        "path": [
+          "Option"
+        ]
+      }
+    },
+    {
+      "id": 56,
+      "type": {
+        "def": {
+          "composite": {
+            "fields": [
+              {
+                "name": "hot_key",
+                "type": 0,
+                "typeName": "AccountId"
+              }
+            ]
+          }
+        },
+        "path": [
+          "tusdt_auction",
+          "auction",
+          "BidMetadata"
+        ]
+      }
+    },
+    {
+      "id": 57,
       "type": {
         "def": {
           "variant": {
@@ -3362,7 +3482,7 @@
       }
     },
     {
-      "id": 56,
+      "id": 58,
       "type": {
         "def": {
           "variant": {}
diff --git a/tensorusd/auction/contract.py b/tensorusd/auction/contract.py
index ffd4507..bf8f26a 100644
--- a/tensorusd/auction/contract.py
+++ b/tensorusd/auction/contract.py
@@ -395,6 +395,22 @@ def get_active_auctions_count(self) -> int:
         except Exception as e:
             bt.logging.error(f"Error getting active auctions count: {e}")
             return 0
+        
+    def _get_bid_count(self, auction_id: int) -> int:
+        """Get count of bids."""
+        try:
+            result = self.contract.read(
+                keypair=self.wallet.hotkey,
+                method="get_all_auctions",
+                args={"auction_id": auction_id}
+            )
+            data = result.contract_result_data.value_object
+            if data and data[0] == "Ok":
+                return data[1]['bid_count']
+            return 0
+        except Exception as e:
+            bt.logging.error(f"Error getting bid count: {e}")
+            return 0
 
     def get_current_block(self) -> int:
         return self.substrate.get_block_number(None)
@@ -412,6 +428,124 @@ def get_current_timestamp(self) -> int:
         except Exception as e:
             bt.logging.error(f"Error getting blockchain timestamp: {e}")
             return 0
+    
+    def withdraw_refund(
+        self,
+        auction_id: int,
+        bid_id: int
+    ) -> Optional[str]:
+        """
+        Withdraw a refund for a bid on a liquidation auction.
+
+        Args:
+            auction_id: Auction ID to withdraw refund from (u32)
+            bid_id: Bid ID to withdraw refund for (u32)
+            keypair: Keypair to sign the transaction
+
+        Returns:
+            Transaction hash if successful, None otherwise
+        """
+
+        bt.logging.info("Refunding your latest bid from contract")
+
+        try:
+            args = {
+                "auction_id": auction_id,
+                "bid_id": bid_id,
+            }
+
+            gas_predict_result = self.contract.read(
+                keypair=self.wallet.coldkey,
+                method="withdraw_refund",
+                args=args,
+            )
+
+            bt.logging.info(
+                f"Submitting withdraw_refund tx: auction_id={auction_id}, bid_id={bid_id}"
+            )
+            receipt = self.contract.exec(
+                keypair=self.wallet.coldkey,
+                method="withdraw_refund",
+                args=args,
+                gas_limit=gas_predict_result.gas_required,
+            )
+
+            if receipt.is_success:
+                bt.logging.info(
+                    f"Refund withdrawn: auction={auction_id}, bid_id={bid_id}, "
+                    f"tx={receipt.extrinsic_hash}"
+                )
+                return receipt.extrinsic_hash
+            else:
+                bt.logging.error(f"Refund withdrawal failed: {receipt.error_message}")
+                return None
+
+        except Exception as e:
+            bt.logging.error(f"Error withdrawing refund: {e}")
+            return None
+
+    def get_auction_bid(
+        self,
+        auction_id: int,
+    ) -> Optional[str]:
+        """
+        Withdraw a refund for a bid on a liquidation auction.
+
+        Args:
+            auction_id: Auction ID to withdraw refund from (u32)
+            bid_id: Bid ID to withdraw refund for (u32)
+            keypair: Keypair to sign the transaction
+
+        Returns:
+            Transaction hash if successful, None otherwise
+        """
+        my_address = self.wallet.coldkey.ss58_address
+        bt.logging.info(
+            f"Fetching bid info from contract: auction_id={auction_id}, bidder={my_address}"
+        )
+
+        try:
+            args = {
+                "auction_id": auction_id,
+                "bidder": my_address,
+            }
+
+            result = self.contract.read(
+                keypair=self.wallet.hotkey,
+                method="get_auction_bid",
+                args=args,
+            )
+
+            data = result.contract_result_data.value_object
+
+            if data and data[0] == "Ok" and data[1]:
+                bid_id = data[1].value["id"]
+                amount = data[1].value["amount"]
+                withdrawn = data[1].value["is_withdrawn"]
+
+                bt.logging.info(
+                    f"Bid found: auction_id={auction_id}, bid_id={bid_id}, "
+                    f"amount={amount}, is_withdrawn={withdrawn}"
+                )
+
+                if not withdrawn:
+                    bt.logging.info(
+                        f"Bid not yet refunded — initiating withdrawal: "
+                        f"auction_id={auction_id}, bid_id={bid_id}"
+                    )
+                    self.withdraw_refund(auction_id, bid_id)
+                else:
+                    bt.logging.info(
+                        f"Bid already withdrawn: auction_id={auction_id}, "
+                        f"bid_id={bid_id}, amount={amount}"
+                    )
+            else:
+                bt.logging.info(
+                    f"No bid found for auction_id={auction_id}, bidder={my_address}"
+                )
+
+        except Exception as e:
+            bt.logging.error(f"Error fetching auction bid: {e}")
 
     def get_active_auctions(self) -> List[ActiveAuction]:
         """
diff --git a/tensorusd/miner/auction_manager.py b/tensorusd/miner/auction_manager.py
index d7ec36f..dee7d14 100644
--- a/tensorusd/miner/auction_manager.py
+++ b/tensorusd/miner/auction_manager.py
@@ -193,6 +193,7 @@ async def handle_auction_finalized(self, event: AuctionEvent):
                 f"winner={event.winner}, "
                 f"winning_bid={event.highest_bid}"
             )
+            self.auction_contract.get_auction_bid(auction_id)
 
     async def _submit_bid(self, auction_id: int, bid_amount: int) -> Optional[str]:
         """