{"action":"created","issue":{"url":"https://api.github.com/repos/docker/notary/issues/414","repository_url":"https://api.github.com/repos/docker/notary","labels_url":"https://api.github.com/repos/docker/notary/issues/414/labels{/name}","comments_url":"https://api.github.com/repos/docker/notary/issues/414/comments","events_url":"https://api.github.com/repos/docker/notary/issues/414/events","html_url":"https://github.com/docker/notary/issues/414","id":125058581,"number":414,"title":"Client diffing of history API","user":{"login":"vikstrous","id":482425,"avatar_url":"https://avatars.githubusercontent.com/u/482425?v=3","gravatar_id":"","url":"https://api.github.com/users/vikstrous","html_url":"https://github.com/vikstrous","followers_url":"https://api.github.com/users/vikstrous/followers","following_url":"https://api.github.com/users/vikstrous/following{/other_user}","gists_url":"https://api.github.com/users/vikstrous/gists{/gist_id}","starred_url":"https://api.github.com/users/vikstrous/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/vikstrous/subscriptions","organizations_url":"https://api.github.com/users/vikstrous/orgs","repos_url":"https://api.github.com/users/vikstrous/repos","events_url":"https://api.github.com/users/vikstrous/events{/privacy}","received_events_url":"https://api.github.com/users/vikstrous/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/docker/notary/labels/Feature","name":"Feature","color":"c7def8"},{"url":"https://api.github.com/repos/docker/notary/labels/theme/ops-friendliness","name":"theme/ops-friendliness","color":"5319e7"}],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":6,"created_at":"2016-01-05T21:46:45Z","updated_at":"2016-10-17T22:39:04Z","closed_at":null,"body":"Once we have a way to query old versions, we need the notary client to be able to diff old versions to produce a meaningful list of changes over time in a way that is cryptographically verified. It should show:\r\n\r\n* added tags\r\n* replaced tags\r\n* removed tags\r\n* added delegations\r\n* removed delegations\r\n\r\nIt would be useful to know which user/key made the change to the tag and when the change happened."},"comment":{"url":"https://api.github.com/repos/docker/notary/issues/comments/254355454","html_url":"https://github.com/docker/notary/issues/414#issuecomment-254355454","issue_url":"https://api.github.com/repos/docker/notary/issues/414","id":254355454,"user":{"login":"avaid96","id":9308841,"avatar_url":"https://avatars.githubusercontent.com/u/9308841?v=3","gravatar_id":"","url":"https://api.github.com/users/avaid96","html_url":"https://github.com/avaid96","followers_url":"https://api.github.com/users/avaid96/followers","following_url":"https://api.github.com/users/avaid96/following{/other_user}","gists_url":"https://api.github.com/users/avaid96/gists{/gist_id}","starred_url":"https://api.github.com/users/avaid96/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/avaid96/subscriptions","organizations_url":"https://api.github.com/users/avaid96/orgs","repos_url":"https://api.github.com/users/avaid96/repos","events_url":"https://api.github.com/users/avaid96/events{/privacy}","received_events_url":"https://api.github.com/users/avaid96/received_events","type":"User","site_admin":false},"created_at":"2016-10-17T22:39:04Z","updated_at":"2016-10-17T22:39:04Z","body":"Just thought I'd mention for the record on this issue that in discussion with @jchorl and @NathanMcCauley, the primary issues that came up with producing this was the **cryptographically verifiable** bit. If I remember correctly, there were a lot of challenges if history data was stored in a content addressable store since we won't be able to verify if we lost information along the way"}}
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