➜  ~ oras push localhost:5000/artifact:type --format json --config <(echo -n "{}"):my/type --image-spec v1.1
✓ Exists    my/type                                                                                0/0  B 100.00%     0s
  └─ sha256:44136fa355b3678a1146ad16f7e8649e94fb4fc21fe77e8310c060f61caaff8a
✓ Exists    application/vnd.oci.empty.v1+json                                                      2/2  B 100.00%     0s
  └─ sha256:44136fa355b3678a1146ad16f7e8649e94fb4fc21fe77e8310c060f61caaff8a
✓ Uploaded  application/vnd.oci.image.manifest.v1+json                                         442/442  B 100.00%     0s
  └─ sha256:3179007d443a6c79a5e3b8af868cf762202ca3e95ecf87da456e59963913e006
{
  "Ref": "localhost:5000/artifact@sha256:3179007d443a6c79a5e3b8af868cf762202ca3e95ecf87da456e59963913e006",
  "MediaType": "application/vnd.oci.image.manifest.v1+json",
  "Digest": "sha256:3179007d443a6c79a5e3b8af868cf762202ca3e95ecf87da456e59963913e006",
  "Size": 442,
  "Annotations": {
    "org.opencontainers.image.created": "2024-03-28T01:43:28Z"
  },
  "ArtifactType": ""
}
➜  ~ oras manifest fetch --pretty localhost:5000/artifact:type
{
  "schemaVersion": 2,
  "mediaType": "application/vnd.oci.image.manifest.v1+json",
  "config": {
    "mediaType": "my/type",
    "digest": "sha256:44136fa355b3678a1146ad16f7e8649e94fb4fc21fe77e8310c060f61caaff8a",
    "size": 0
  },
  "layers": [
    {
      "mediaType": "application/vnd.oci.empty.v1+json",
      "digest": "sha256:44136fa355b3678a1146ad16f7e8649e94fb4fc21fe77e8310c060f61caaff8a",
      "size": 2,
      "data": "e30="
    }
  ],
  "annotations": {
    "org.opencontainers.image.created": "2024-03-28T01:43:28Z"