Merge branch 'opencontainers:master' into oci-artifact-manifest

MAINTAINERS

@@ -2,4 +2,4 @@
 + Derek McGowan <derek.mcgowan@docker.com> (@dmcgowan)
 + Mike Brown <brownwm@us.ibm.com> (@mikebrow)
 + Stephen Day <stevvooe@gmail.com> (@stevvooe)
-+ Joey Schorr <jschorr@redhat.com> (@josephschorr)
++ Joey Schorr <jschorr@petricorp.io> (@josephschorr)

artifact-authors.md

@@ -53,7 +53,7 @@ The manifest `config.mediaType` is the equivalent of a file extension, enabling
 |Icon|Artifact|`config.mediaType`|
 |-|-|-|
 |<img src="https://github.com/opencontainers/artwork/blob/master/oci/icon/color/oci-icon-color.png?raw=true" width=30x>|[OCI Image][image-spec]|`application/vnd.oci.image.config.v1+json`|
-|<img src="https://github.com/helm/helm-www/blob/master/themes/helm/static/img/apple-touch-icon.png?raw=true" width=30x>|[Helm Chart](https://helm.sh)|`application/vnd.cncf.helm.chart.config.v1+json`|
+|<img src="https://github.com/helm/helm-www/blob/main/themes/helm/static/img/apple-touch-icon.png?raw=true" width=30x>|[Helm Chart](https://helm.sh)|`application/vnd.cncf.helm.chart.config.v1+json`|
 |<img src="https://github.com/sylabs/singularity/blob/master/docs/logos/singularity_v3.png?raw=true" width=30x>|[Singularity][singularity], by [Sylabs][sylabs]|`application/vnd.sylabs.sif.config.v1+json`|
 
 ## Defining a Unique Artifact Type

implementors.md

@@ -0,0 +1,12 @@
+# OCI Artifacts Implementations
+
+Registries currently supporting OCI Artifacts
+
+- [Amazon Container Registry](https://aws.amazon.com/blogs/containers/oci-artifact-support-in-amazon-ecr/)
+- [Azure Container Registry](https://aka.ms/acr/artifacts)
+- [CNCF Distribution](https://github.com/distribution/distribution/) 
+- [Project Harbor](https://goharbor.io/blog/harbor-2.0/)
+- [Quay.io](https://www.openshift.com/blog/quay-oci-artifact-support-for-helm-charts)
+_(to add your project, please open a [pull-request](https://github.com/opencontainers/artifacts/pulls))_
+
+[distribution-spec]: https://github.com/opencontainers/distribution-spec/