diff --git a/alembic/versions/1def8c988372_add_librarian_transfer_toggling.py b/alembic/versions/1def8c988372_add_librarian_transfer_toggling.py
index c993cc0..74e1a6c 100644
--- a/alembic/versions/1def8c988372_add_librarian_transfer_toggling.py
+++ b/alembic/versions/1def8c988372_add_librarian_transfer_toggling.py
@@ -1,7 +1,8 @@
 # Copyright 2017 the HERA Collaboration
 # Licensed under the 2-clause BSD License.
 
-"""Add librarian transfer toggling
+
+"""Add librarian transfer toggling and corruption
 
 Revision ID: 1def8c988372
 Revises: 42f29c26ab0f
@@ -24,6 +25,19 @@ def upgrade():
             sa.Column("transfers_enabled", sa.Boolean(), nullable=False, default=True)
         )
 
+    op.create_table(
+        "corrupt_files",
+        sa.Column("id", sa.Integer(), nullable=False),
+        sa.Column("file_name", sa.String(), nullable=False),
+        sa.Column("instance_id", sa.Integer(), nullable=False),
+        sa.Column("corrupt_time", sa.DateTime(), nullable=False),
+        sa.Column("size", sa.BigInteger(), nullable=False),
+        sa.Column("checksum", sa.String(), nullable=False),
+        sa.Column("count", sa.Integer(), nullable=False),
+        sa.PrimaryKeyConstraint("id"),
+    )
+
 
 def downgrade():
     op.drop_column("librarians", "transfers_enabled")
+    op.drop_table("corrupt_files")
diff --git a/hera_librarian/cli.py b/hera_librarian/cli.py
index 4590f0d..d9ae81c 100644
--- a/hera_librarian/cli.py
+++ b/hera_librarian/cli.py
@@ -1749,7 +1749,6 @@ def config_set_librarian_transfer_subparser(sub_parsers):
     sp.add_argument(
         "--name", help="The name of the librarian to set the transfer state of."
     )
-
     grp = sp.add_mutually_exclusive_group()
     grp.add_argument(
         "--enabled",
diff --git a/librarian_background/check_integrity.py b/librarian_background/check_integrity.py
index 1e4d691..db01585 100644
--- a/librarian_background/check_integrity.py
+++ b/librarian_background/check_integrity.py
@@ -12,6 +12,7 @@
 from hera_librarian.utils import compare_checksums, get_hash_function_from_hash
 from librarian_server.database import get_session
 from librarian_server.orm import Instance, StoreMetadata
+from librarian_server.orm.file import CorruptFile, File
 
 from .task import Task
 
@@ -108,6 +109,26 @@ def core(self, session: Session):
             else:
                 # File is not fine. Log it.
                 all_files_fine = False
+
+                # Do we already have a corrupt file?
+                corrupt_file = (
+                    session.query(CorruptFile)
+                    .filter_by(instance_id=file.id)
+                    .one_or_none()
+                )
+
+                if corrupt_file is None:
+                    corrupt_file = CorruptFile.new_corrupt_file(
+                        instance=file,
+                        size=path_info.size,
+                        checksum=path_info.checksum,
+                    )
+                    session.add(corrupt_file)
+                    session.commit()
+                else:
+                    corrupt_file.count += 1
+                    session.commit()
+
                 logger.error(
                     "Instance {} on store {} has an incorrect checksum. Expected {}, got {}. (Instance: {})",
                     file.path,
diff --git a/librarian_background/queues.py b/librarian_background/queues.py
index 9b34cfc..8fff403 100644
--- a/librarian_background/queues.py
+++ b/librarian_background/queues.py
@@ -157,11 +157,11 @@ def check_on_consumed(
                 # We can't do anything with this librarian, but there may be other
                 # librarians that are enabled.
                 continue
-            
+
             logger.info(
                 "Handling queue item {q.id} with {q.retries} retries", q=queue_item
             )
-            
+
             current_status = queue_item.async_transfer_manager.transfer_status(
                 settings=server_settings
             )
diff --git a/librarian_server/api/validate.py b/librarian_server/api/validate.py
index 28d0ea1..6781e81 100644
--- a/librarian_server/api/validate.py
+++ b/librarian_server/api/validate.py
@@ -25,7 +25,8 @@
 
 from ..database import yield_session
 from ..logger import log
-from ..orm.file import File
+from ..orm.file import CorruptFile, File
+from ..orm.instance import Instance
 from ..orm.librarian import Librarian
 from ..settings import server_settings
 from .auth import ReadonlyUserDependency
@@ -193,11 +194,31 @@ async def validate_file(
 
     for info in checksum_info:
         if not info.computed_same_checksum and info.librarian == server_settings.name:
+            # Add the corrupt file to the database, though check if we already have
+            # it first.
+            query = select(CorruptFile).filter(CorruptFile.file_name == file.name)
+
+            corrupt_file = session.execute(query).one_or_none()
+
+            if corrupt_file is not None:
+                corrupt_file.count += 1
+                session.commit()
+                continue
+            else:
+                corrupt_file = CorruptFile.new_corrupt_file(
+                    instance=session.get(Instance, info.instance_id),
+                    size=info.current_size,
+                    checksum=info.current_checksum,
+                )
+                session.add(corrupt_file)
+                session.commit()
+
             log.error(
                 "File validation failed, the checksums do not match for file "
-                "{} in store {}.",
+                "{} in store {}. CorruptFile: {}",
                 request.file_name,
                 info.store,
+                corrupt_file.id,
             )
 
     return FileValidationResponse(checksum_info)
diff --git a/librarian_server/orm/__init__.py b/librarian_server/orm/__init__.py
index 8fd1beb..91b7fc4 100644
--- a/librarian_server/orm/__init__.py
+++ b/librarian_server/orm/__init__.py
@@ -3,7 +3,7 @@
 """
 
 from .errors import Error
-from .file import File
+from .file import CorruptFile, File
 from .instance import Instance, RemoteInstance
 from .librarian import Librarian
 from .sendqueue import SendQueue
diff --git a/librarian_server/orm/file.py b/librarian_server/orm/file.py
index fad87c3..a7d04e5 100644
--- a/librarian_server/orm/file.py
+++ b/librarian_server/orm/file.py
@@ -145,3 +145,68 @@ def delete(
 
         if commit:
             session.commit()
+
+
+class CorruptFile(db.Base):
+    """
+    An ORM object for a file that has been marked as (potentially) corrupt
+    during a check. This will need to be verified and fixed.
+    """
+
+    __tablename__ = "corrupt_files"
+
+    id: int = db.Column(db.Integer, primary_key=True)
+    "The ID of the corrupt file."
+    file_name: str = db.Column(
+        db.String(256), db.ForeignKey("files.name"), nullable=False
+    )
+    "The name of the file."
+    file = db.relationship("File", primaryjoin="CorruptFile.file_name == File.name")
+    "The file object associated with this."
+    instance_id: int = db.Column(db.Integer, db.ForeignKey("instances.id"))
+    "The instance ID of the corrupt file."
+    instance = db.relationship(
+        "Instance", primaryjoin="CorruptFile.instance_id == Instance.id"
+    )
+    "The instance object associated with this."
+    corrupt_time: datetime = db.Column(db.DateTime)
+    "The time at which the file was marked as corrupt."
+    size: int = db.Column(db.BigInteger)
+    "The size of the file in bytes."
+    checksum: str = db.Column(db.String(256))
+    "The checksum of the file that was re-computed and found to be incorrect."
+    count: int = db.Column(db.Integer)
+    "The number of times this file has been marked as corrupt."
+
+    @classmethod
+    def new_corrupt_file(
+        cls, instance: Instance, size: int, checksum: str
+    ) -> "CorruptFile":
+        """
+        Create a new corrupt file object.
+
+        Parameters
+        ----------
+        file : File
+            The file that is corrupt.
+        size : int
+            The size of the file in bytes.
+        checksum : str
+            The checksum of the file that was re-computed and found to be incorrect.
+
+        Returns
+        -------
+        CorruptFile
+            The new corrupt file object.
+        """
+
+        return CorruptFile(
+            file_name=instance.file.name,
+            file=instance.file,
+            instance_id=instance.id,
+            instance=instance,
+            corrupt_time=datetime.now(timezone.utc),
+            size=size,
+            checksum=checksum,
+            count=1,
+        )
diff --git a/tests/background_unit_test/test_check_integrity.py b/tests/background_unit_test/test_check_integrity.py
index f248693..1ed8a28 100644
--- a/tests/background_unit_test/test_check_integrity.py
+++ b/tests/background_unit_test/test_check_integrity.py
@@ -41,6 +41,12 @@ def test_check_integrity_failure(test_client, test_server_with_invalid_file, tes
     )
     assert integrity_task() == False
 
+    # Go check the database!
+    with get_session() as session:
+        corrupt_file = session.query(test_orm.CorruptFile).first()
+        assert corrupt_file is not None
+        assert corrupt_file.count >= 1
+
 
 def test_check_integrity_invalid_store(test_client, test_server, test_orm):
     """