diff --git a/swh/loader/package/debian.py b/swh/loader/package/debian.py
--- a/swh/loader/package/debian.py
+++ b/swh/loader/package/debian.py
@@ -29,7 +29,7 @@
     """Load debian origins into swh archive.
 
     """
-    visit_type = 'debian'
+    visit_type = 'deb'
 
     def __init__(self, url: str, date: str, packages: Mapping[str, Any]):
         """Debian Loader implementation.
diff --git a/swh/loader/package/deposit.py b/swh/loader/package/deposit.py
--- a/swh/loader/package/deposit.py
+++ b/swh/loader/package/deposit.py
@@ -7,7 +7,7 @@
 
 from typing import Any, Dict, Generator, Mapping, Sequence, Tuple
 
-from swh.model.hashutil import hash_to_hex
+from swh.model.hashutil import hash_to_hex, hash_to_bytes
 from swh.loader.package.loader import PackageLoader
 from swh.deposit.client import PrivateApiDepositClient as ApiClient
 
@@ -116,7 +116,7 @@
                     self.deposit_update_url, status='failed')
                 return r
 
-            snapshot_id = r['snapshot_id']
+            snapshot_id = hash_to_bytes(r['snapshot_id'])
             branches = self.storage.snapshot_get(snapshot_id)['branches']
             logger.debug('branches: %s', branches)
             if not branches:
diff --git a/swh/loader/package/loader.py b/swh/loader/package/loader.py
--- a/swh/loader/package/loader.py
+++ b/swh/loader/package/loader.py
@@ -15,6 +15,7 @@
 from swh.core.tarball import uncompress
 from swh.core.config import SWHConfig
 from swh.model.from_disk import Directory
+from swh.model.hashutil import hash_to_hex
 from swh.model.identifiers import (
     revision_identifier, snapshot_identifier, identifier_to_bytes
 )
@@ -390,5 +391,5 @@
             'status': status_load,
         }  # type: Dict[str, Any]
         if snapshot:
-            result['snapshot_id'] = snapshot['id']
+            result['snapshot_id'] = hash_to_hex(snapshot['id'])
         return result
diff --git a/swh/loader/package/tests/test_archive.py b/swh/loader/package/tests/test_archive.py
--- a/swh/loader/package/tests/test_archive.py
+++ b/swh/loader/package/tests/test_archive.py
@@ -99,6 +99,7 @@
 
     actual_load_status = loader.load()
     assert actual_load_status['status'] == 'uneventful'
+    assert actual_load_status['snapshot_id'] is not None
     stats = get_stats(loader.storage)
 
     assert {
@@ -115,6 +116,7 @@
 
     origin_visit = next(loader.storage.origin_visit_get(url))
     assert origin_visit['status'] == 'partial'
+    assert origin_visit['type'] == 'tar'
 
 
 def test_check_revision_metadata_structure(swh_config, requests_mock_datadir):
@@ -122,6 +124,7 @@
 
     actual_load_status = loader.load()
     assert actual_load_status['status'] == 'eventful'
+    assert actual_load_status['snapshot_id'] is not None
 
     expected_revision_id = hash_to_bytes(
         '44183488c0774ce3c957fa19ba695cf18a4a42b3')
@@ -154,6 +157,7 @@
 
     actual_load_status = loader.load()
     assert actual_load_status['status'] == 'eventful'
+    assert actual_load_status['snapshot_id'] == _expected_new_snapshot_first_visit_id  # noqa
 
     stats = get_stats(loader.storage)
     assert {
@@ -195,13 +199,21 @@
 
     actual_load_status = loader.load()
     assert actual_load_status['status'] == 'eventful'
+    assert actual_load_status['snapshot_id'] is not None
     origin_visit = list(loader.storage.origin_visit_get(url))[-1]
     assert origin_visit['status'] == 'full'
+    assert origin_visit['type'] == 'tar'
 
     actual_load_status2 = loader.load()
     assert actual_load_status2['status'] == 'uneventful'
+    assert actual_load_status2['snapshot_id'] is not None
+
+    assert actual_load_status['snapshot_id'] == actual_load_status2[
+        'snapshot_id']
+
     origin_visit2 = list(loader.storage.origin_visit_get(url))[-1]
     assert origin_visit2['status'] == 'full'
+    assert origin_visit2['type'] == 'tar'
 
     urls = [
         m.url for m in requests_mock_datadir.request_history
@@ -220,8 +232,11 @@
 
     actual_load_status = loader.load()
     assert actual_load_status['status'] == 'eventful'
+    assert actual_load_status['snapshot_id'] is not None
+
     origin_visit = list(loader.storage.origin_visit_get(url))[-1]
     assert origin_visit['status'] == 'full'
+    assert origin_visit['type'] == 'tar'
 
     stats = get_stats(loader.storage)
     assert {
@@ -258,6 +273,7 @@
 
     actual_load_status2 = loader2.load()
     assert actual_load_status2['status'] == 'eventful'
+    assert actual_load_status2['snapshot_id'] is not None
 
     stats2 = get_stats(loader.storage)
     assert {
@@ -274,6 +290,7 @@
 
     origin_visit2 = list(loader.storage.origin_visit_get(url))[-1]
     assert origin_visit2['status'] == 'full'
+    assert origin_visit2['type'] == 'tar'
 
     urls = [
         m.url for m in requests_mock_datadir.request_history
@@ -329,13 +346,18 @@
 
     actual_load_status = loader.load()
     assert actual_load_status['status'] == 'eventful'
+    assert actual_load_status['snapshot_id'] is not None
     origin_visit = list(loader.storage.origin_visit_get(url))[-1]
     assert origin_visit['status'] == 'full'
+    assert origin_visit['type'] == 'tar'
 
     actual_load_status2 = loader.load()
     assert actual_load_status2['status'] == 'uneventful'
+    assert actual_load_status2['snapshot_id'] == actual_load_status[
+        'snapshot_id']
     origin_visit2 = list(loader.storage.origin_visit_get(url))[-1]
     assert origin_visit2['status'] == 'full'
+    assert origin_visit2['type'] == 'tar'
 
     urls = [
         m.url for m in requests_mock_datadir.request_history
diff --git a/swh/loader/package/tests/test_debian.py b/swh/loader/package/tests/test_debian.py
--- a/swh/loader/package/tests/test_debian.py
+++ b/swh/loader/package/tests/test_debian.py
@@ -96,7 +96,11 @@
         packages=PACKAGE_PER_VERSION)
 
     actual_load_status = loader.load()
-    assert actual_load_status['status'] == 'eventful'
+    expected_snapshot_id = '3b6b66e6ee4e7d903a379a882684a2a50480c0b4'
+    assert actual_load_status == {
+        'status': 'eventful',
+        'snapshot_id': expected_snapshot_id
+    }
 
     stats = get_stats(loader.storage)
     assert {
@@ -112,7 +116,7 @@
     } == stats
 
     expected_snapshot = {
-        'id': '3b6b66e6ee4e7d903a379a882684a2a50480c0b4',
+        'id': expected_snapshot_id,
         'branches': {
             'releases/stretch/contrib/0.7.2-3': {
                 'target_type': 'revision',
@@ -126,7 +130,7 @@
 
 def test_debian_first_visit_then_another_visit(
         swh_config, requests_mock_datadir):
-    """With no prior visit, load a gnu project ends up with 1 snapshot
+    """With no prior visit, load a debian project ends up with 1 snapshot
 
     """
     url = 'deb://Debian/packages/cicero'
@@ -136,9 +140,16 @@
         packages=PACKAGE_PER_VERSION)
 
     actual_load_status = loader.load()
-    assert actual_load_status['status'] == 'eventful'
+
+    expected_snapshot_id = '3b6b66e6ee4e7d903a379a882684a2a50480c0b4'
+    assert actual_load_status == {
+        'status': 'eventful',
+        'snapshot_id': expected_snapshot_id
+    }
+
     origin_visit = next(loader.storage.origin_visit_get(url))
     assert origin_visit['status'] == 'full'
+    assert origin_visit['type'] == 'deb'
 
     stats = get_stats(loader.storage)
     assert {
@@ -154,7 +165,7 @@
     } == stats
 
     expected_snapshot = {
-        'id': '3b6b66e6ee4e7d903a379a882684a2a50480c0b4',
+        'id': expected_snapshot_id,
         'branches': {
             'releases/stretch/contrib/0.7.2-3': {
                 'target_type': 'revision',
@@ -170,6 +181,7 @@
     assert actual_load_status2['status'] == 'uneventful'
     origin_visit2 = list(loader.storage.origin_visit_get(url))
     assert origin_visit2[-1]['status'] == 'full'
+    assert origin_visit2[-1]['type'] == 'deb'
 
     stats2 = get_stats(loader.storage)
     assert {
@@ -349,13 +361,18 @@
         packages=PACKAGES_PER_VERSION)
 
     actual_load_status = loader.load()
-    assert actual_load_status['status'] == 'eventful'
+    expected_snapshot_id = 'defc19021187f3727293121fcf6c5c82cb923604'
+    assert actual_load_status == {
+        'status': 'eventful',
+        'snapshot_id': expected_snapshot_id
+    }
 
     origin_visit = next(loader.storage.origin_visit_get(url))
     assert origin_visit['status'] == 'full'
+    assert origin_visit['type'] == 'deb'
 
     expected_snapshot = {
-        'id': 'defc19021187f3727293121fcf6c5c82cb923604',
+        'id': expected_snapshot_id,
         'branches': {
             'releases/stretch/contrib/0.7.2-3': {
                 'target_type': 'revision',
diff --git a/swh/loader/package/tests/test_deposit.py b/swh/loader/package/tests/test_deposit.py
--- a/swh/loader/package/tests/test_deposit.py
+++ b/swh/loader/package/tests/test_deposit.py
@@ -38,7 +38,7 @@
     loader = DepositLoader(url, unknown_deposit_id)  # does not exist
 
     actual_load_status = loader.load()
-    assert actual_load_status['status'] == 'failed'
+    assert actual_load_status == {'status': 'failed'}
 
     stats = get_stats(loader.storage)
 
@@ -56,6 +56,7 @@
 
     origin_visit = next(loader.storage.origin_visit_get(url))
     assert origin_visit['status'] == 'partial'
+    assert origin_visit['type'] == 'deposit'
 
 
 requests_mock_datadir_missing_one = requests_mock_datadir_factory(ignore_urls=[
@@ -76,6 +77,7 @@
     assert loader.archive_url
     actual_load_status = loader.load()
     assert actual_load_status['status'] == 'uneventful'
+    assert actual_load_status['snapshot_id'] is not None
 
     stats = get_stats(loader.storage)
     assert {
@@ -92,6 +94,7 @@
 
     origin_visit = next(loader.storage.origin_visit_get(url))
     assert origin_visit['status'] == 'partial'
+    assert origin_visit['type'] == 'deposit'
 
 
 def test_revision_metadata_structure(swh_config, requests_mock_datadir):
@@ -105,6 +108,7 @@
     assert loader.archive_url
     actual_load_status = loader.load()
     assert actual_load_status['status'] == 'eventful'
+    assert actual_load_status['snapshot_id'] is not None
 
     expected_revision_id = hash_to_bytes(
         '9471c606239bccb1f269564c9ea114e1eeab9eb4')
@@ -136,7 +140,11 @@
 
     assert loader.archive_url
     actual_load_status = loader.load()
-    assert actual_load_status['status'] == 'eventful'
+    expected_snapshot_id = '453f455d0efb69586143cd6b6e5897f9906b53a7'
+    assert actual_load_status == {
+        'status': 'eventful',
+        'snapshot_id': expected_snapshot_id,
+    }
 
     stats = get_stats(loader.storage)
     assert {
@@ -153,6 +161,7 @@
 
     origin_visit = next(loader.storage.origin_visit_get(url))
     assert origin_visit['status'] == 'full'
+    assert origin_visit['type'] == 'deposit'
 
     expected_branches = {
         'HEAD': {
@@ -162,7 +171,7 @@
     }
 
     expected_snapshot = {
-        'id': '453f455d0efb69586143cd6b6e5897f9906b53a7',
+        'id': expected_snapshot_id,
         'branches': expected_branches,
     }
     check_snapshot(expected_snapshot, storage=loader.storage)
diff --git a/swh/loader/package/tests/test_npm.py b/swh/loader/package/tests/test_npm.py
--- a/swh/loader/package/tests/test_npm.py
+++ b/swh/loader/package/tests/test_npm.py
@@ -389,6 +389,7 @@
 
     actual_load_status = loader.load()
     assert actual_load_status['status'] == 'eventful'
+    assert actual_load_status['snapshot_id'] is not None
 
     expected_revision_id = hash_to_bytes(
         'd8a1c7474d2956ac598a19f0f27d52f7015f117e')
@@ -421,7 +422,11 @@
                        package_metadata_url(package))
 
     actual_load_status = loader.load()
-    assert actual_load_status['status'] == 'eventful'
+    expected_snapshot_id = 'd0587e1195aed5a8800411a008f2f2d627f18e2d'
+    assert actual_load_status == {
+        'status': 'eventful',
+        'snapshot_id': expected_snapshot_id
+    }
 
     stats = get_stats(loader.storage)
 
@@ -448,7 +453,7 @@
         _expected_new_revisions_first_visit)) == []
 
     expected_snapshot = {
-        'id': 'd0587e1195aed5a8800411a008f2f2d627f18e2d',
+        'id': expected_snapshot_id,
         'branches': {
             'HEAD': {
                 'target': 'releases/0.0.4',
@@ -479,10 +484,11 @@
     loader = NpmLoader(package, url, metadata_url)
 
     actual_load_status = loader.load()
-
     assert actual_load_status['status'] == 'eventful'
+    assert actual_load_status['status'] is not None
     origin_visit = list(loader.storage.origin_visit_get(url))[-1]
     assert origin_visit['status'] == 'full'
+    assert origin_visit['type'] == 'npm'
 
     stats = get_stats(loader.storage)
 
@@ -500,10 +506,14 @@
 
     loader._info = None  # reset loader internal state
     actual_load_status2 = loader.load()
-
     assert actual_load_status2['status'] == 'eventful'
+    snap_id2 = actual_load_status2['snapshot_id']
+    assert snap_id2 is not None
+    assert snap_id2 != actual_load_status['snapshot_id']
+
     origin_visit2 = list(loader.storage.origin_visit_get(url))[-1]
     assert origin_visit2['status'] == 'full'
+    assert origin_visit2['type'] == 'npm'
 
     stats = get_stats(loader.storage)
 
diff --git a/swh/loader/package/tests/test_pypi.py b/swh/loader/package/tests/test_pypi.py
--- a/swh/loader/package/tests/test_pypi.py
+++ b/swh/loader/package/tests/test_pypi.py
@@ -198,6 +198,7 @@
 
     actual_load_status = loader.load()
     assert actual_load_status['status'] == 'uneventful'
+    assert actual_load_status['snapshot_id'] is not None
 
     stats = get_stats(loader.storage)
     assert {
@@ -214,6 +215,7 @@
 
     origin_visit = next(loader.storage.origin_visit_get(url))
     assert origin_visit['status'] == 'partial'
+    assert origin_visit['type'] == 'pypi'
 
 
 # problem during loading:
@@ -227,7 +229,7 @@
         loader = PyPILoader(url)
 
         actual_load_status = loader.load()
-        assert actual_load_status['status'] == 'failed'
+        assert actual_load_status == {'status': 'failed'}
 
         stats = get_stats(loader.storage)
 
@@ -245,6 +247,7 @@
 
     origin_visit = next(loader.storage.origin_visit_get(url))
     assert origin_visit['status'] == 'partial'
+    assert origin_visit['type'] == 'pypi'
 
 
 # problem during loading: failure early enough in between swh contents...
@@ -272,6 +275,7 @@
 
     actual_load_status = loader.load()
     assert actual_load_status['status'] == 'eventful'
+    assert actual_load_status['snapshot_id'] is not None
 
     expected_revision_id = hash_to_bytes(
         'e445da4da22b31bfebb6ffc4383dbf839a074d21')
@@ -305,7 +309,11 @@
     loader = PyPILoader(url)
 
     actual_load_status = loader.load()
-    assert actual_load_status['status'] == 'eventful'
+    expected_snapshot_id = 'dd0e4201a232b1c104433741dbf45895b8ac9355'
+    assert actual_load_status == {
+        'status': 'eventful',
+        'snapshot_id': expected_snapshot_id
+    }
 
     stats = get_stats(loader.storage)
 
@@ -355,13 +363,14 @@
     }
 
     expected_snapshot = {
-        'id': 'dd0e4201a232b1c104433741dbf45895b8ac9355',
+        'id': expected_snapshot_id,
         'branches': expected_branches,
     }
     check_snapshot(expected_snapshot, storage=loader.storage)
 
     origin_visit = next(loader.storage.origin_visit_get(url))
     assert origin_visit['status'] == 'partial'
+    assert origin_visit['type'] == 'pypi'
 
 
 def test_visit_with_1_release_artifact(swh_config, requests_mock_datadir):
@@ -372,7 +381,11 @@
     loader = PyPILoader(url)
 
     actual_load_status = loader.load()
-    assert actual_load_status['status'] == 'eventful'
+    expected_snapshot_id = 'ba6e158ada75d0b3cfb209ffdf6daa4ed34a227a'
+    assert actual_load_status == {
+        'status': 'eventful',
+        'snapshot_id': expected_snapshot_id
+    }
 
     stats = get_stats(loader.storage)
     assert {
@@ -431,13 +444,14 @@
     }
 
     expected_snapshot = {
-        'id': 'ba6e158ada75d0b3cfb209ffdf6daa4ed34a227a',
+        'id': expected_snapshot_id,
         'branches': expected_branches,
     }
     check_snapshot(expected_snapshot, loader.storage)
 
     origin_visit = next(loader.storage.origin_visit_get(url))
     assert origin_visit['status'] == 'full'
+    assert origin_visit['type'] == 'pypi'
 
 
 def test_multiple_visits_with_no_change(swh_config, requests_mock_datadir):
@@ -448,7 +462,11 @@
     loader = PyPILoader(url)
 
     actual_load_status = loader.load()
-    assert actual_load_status['status'] == 'eventful'
+    snapshot_id = 'ba6e158ada75d0b3cfb209ffdf6daa4ed34a227a'
+    assert actual_load_status == {
+        'status': 'eventful',
+        'snapshot_id': snapshot_id,
+    }
 
     stats = get_stats(loader.storage)
 
@@ -479,7 +497,6 @@
         },
     }
 
-    snapshot_id = 'ba6e158ada75d0b3cfb209ffdf6daa4ed34a227a'
     expected_snapshot = {
         'id': snapshot_id,
         'branches': expected_branches,
@@ -488,9 +505,13 @@
 
     origin_visit = next(loader.storage.origin_visit_get(url))
     assert origin_visit['status'] == 'full'
+    assert origin_visit['type'] == 'pypi'
 
     actual_load_status2 = loader.load()
-    assert actual_load_status2['status'] == 'uneventful'
+    assert actual_load_status2 == {
+        'status': 'uneventful',
+        'snapshot_id': actual_load_status2['snapshot_id']
+    }
 
     stats2 = get_stats(loader.storage)
     expected_stats2 = stats.copy()
@@ -511,9 +532,15 @@
 
     visit1_actual_load_status = loader.load()
     visit1_stats = get_stats(loader.storage)
-    assert visit1_actual_load_status['status'] == 'eventful'
+    expected_snapshot_id = 'ba6e158ada75d0b3cfb209ffdf6daa4ed34a227a'
+    assert visit1_actual_load_status == {
+        'status': 'eventful',
+        'snapshot_id': expected_snapshot_id
+    }
+
     origin_visit1 = next(loader.storage.origin_visit_get(url))
     assert origin_visit1['status'] == 'full'
+    assert origin_visit1['type'] == 'pypi'
 
     assert {
         'content': 6,
@@ -534,9 +561,16 @@
     visit2_stats = get_stats(loader.storage)
 
     assert visit2_actual_load_status['status'] == 'eventful'
+    expected_snapshot_id2 = '2e5149a7b0725d18231a37b342e9b7c4e121f283'
+    assert visit2_actual_load_status == {
+        'status': 'eventful',
+        'snapshot_id': expected_snapshot_id2
+    }
+
     visits = list(loader.storage.origin_visit_get(url))
     assert len(visits) == 2
     assert visits[1]['status'] == 'full'
+    assert visits[1]['type'] == 'pypi'
 
     assert {
         'content': 6 + 1,     # 1 more content
@@ -603,7 +637,7 @@
         },
     }
     expected_snapshot = {
-        'id': '2e5149a7b0725d18231a37b342e9b7c4e121f283',
+        'id': expected_snapshot_id2,
         'branches': expected_branches,
     }
 
@@ -611,6 +645,7 @@
 
     origin_visit = list(loader.storage.origin_visit_get(url))[-1]
     assert origin_visit['status'] == 'full'
+    assert origin_visit['type'] == 'pypi'
 
     urls = [
         m.url for m in requests_mock_datadir_visits.request_history
@@ -638,7 +673,11 @@
     loader = PyPILoader(url)
 
     actual_load_status = loader.load()
-    assert actual_load_status['status'] == 'eventful'
+    expected_snapshot_id = 'a27e638a4dad6fbfa273c6ebec1c4bf320fb84c6'
+    assert actual_load_status == {
+        'status': 'eventful',
+        'snapshot_id': expected_snapshot_id,
+    }
 
     expected_branches = {
         'releases/1.1.0/nexter-1.1.0.zip': {
@@ -652,10 +691,11 @@
     }
 
     expected_snapshot = {
-        'id': 'a27e638a4dad6fbfa273c6ebec1c4bf320fb84c6',
+        'id': expected_snapshot_id,
         'branches': expected_branches,
     }
     check_snapshot(expected_snapshot, loader.storage)
 
     origin_visit = next(loader.storage.origin_visit_get(url))
     assert origin_visit['status'] == 'full'
+    assert origin_visit['type'] == 'pypi'