$ sstream-query --max=1 --keyring=/usr/share/keyrings/ubuntu-cloudimage-keyring.gpg http://cloud-images.ubuntu.com/daily/ ftype=disk1.img "--output-format=%(release)s %(version_name)s %(ftype)s %(sha256)s %(item_url)s"
precise 20170502 disk1.img 9391149e8ce5191cebab91100bb994b7543cfb1be71d5aba17ad2f29b6c2786d http://cloud-images.ubuntu.com/daily/server/precise/20170502/precise-server-cloudimg-amd64-disk1.img
precise 20170502 disk1.img aeb2f404c5b9a524c50914c3c4bb806ae0a9fb87513cacd6cf8bdb8fa2c3b252 http://cloud-images.ubuntu.com/daily/server/precise/20170502/precise-server-cloudimg-armhf-disk1.img
precise 20170502 disk1.img e7555d37edc816b53950624f86b1947da8be177c17ab82d7c2c6a2dc80b5305e http://cloud-images.ubuntu.com/daily/server/precise/20170502/precise-server-cloudimg-i386-disk1.img
trusty 20170729 disk1.img 1468bb9ae575deb69f153b7fba2084884c4bb8e51def2936a5618deed3598aa1 http://cloud-images.ubuntu.com/daily/server/trusty/20170729/trusty-server-cloudimg-amd64-disk1.img
trusty 20170729 disk1.img cae365c1ee978649eaf083b676e1a12903a20ec2836c54bd01b31871186dd637 http://cloud-images.ubuntu.com/daily/server/trusty/20170729/trusty-server-cloudimg-arm64-disk1.img
trusty 20170729 disk1.img 8b0fb76279c5e8efd8ae25693d2efacf5a12b3a56a32647dd0d629329f1342aa http://cloud-images.ubuntu.com/daily/server/trusty/20170729/trusty-server-cloudimg-armhf-disk1.img
trusty 20170729 disk1.img 75242b3bb9af37e675b5c97d949a228a8f8b343e4edbcb09c18619423a8abd22 http://cloud-images.ubuntu.com/daily/server/trusty/20170729/trusty-server-cloudimg-i386-disk1.img
trusty 20170729 disk1.img fbc366dcd81efdb59eec44bfb7c682c92378f040a83e8b7e448e61e7ebd544e5 http://cloud-images.ubuntu.com/daily/server/trusty/20170729/trusty-server-cloudimg-ppc64el-disk1.img
xenial 20170731 disk1.img bf3520e6160e8be8afa5798dffd50f1d13bf2d07184236f86aced372966534bb http://cloud-images.ubuntu.com/daily/server/xenial/20170731/xenial-server-cloudimg-amd64-disk1.img
xenial 20170731 disk1.img 3de4bed6bb8eed73d5d1cbbd98c25521445c5a691476b81cd6e0c9d7fa6382ed http://cloud-images.ubuntu.com/daily/server/xenial/20170731/xenial-server-cloudimg-arm64-disk1.img
xenial 20170731 disk1.img f39b5b851c98cabb0a84f4d1bb1da918631c5459f0e72973190d24b161c51f57 http://cloud-images.ubuntu.com/daily/server/xenial/20170731/xenial-server-cloudimg-armhf-disk1.img
xenial 20170731 disk1.img 5c2d1903f2ab3211d061a30f59fa898119eb27521ec5949ba8fab1c1c8b88b25 http://cloud-images.ubuntu.com/daily/server/xenial/20170731/xenial-server-cloudimg-i386-disk1.img
xenial 20170731 disk1.img 4aa5e6f9306848d994b95d91e8f2d5e7c7f0fbdc1803addee0371ebdeb29c617 http://cloud-images.ubuntu.com/daily/server/xenial/20170731/xenial-server-cloudimg-powerpc-disk1.img
xenial 20170731 disk1.img 48531163926a09581f24b1edad07a55c0c29319f4e1bb2488b76f9f14a9c86bc http://cloud-images.ubuntu.com/daily/server/xenial/20170731/xenial-server-cloudimg-ppc64el-disk1.img
xenial 20170731 disk1.img 487ea03e507c272b92d0b2003af9975b99d662c411255a2355256d6b6034dff5 http://cloud-images.ubuntu.com/daily/server/xenial/20170731/xenial-server-cloudimg-s390x-disk1.img
zesty 20170728 disk1.img 6c1140e6ae354b50b6706118edc49ce720d70ae376a578136912b561cc4df663 http://cloud-images.ubuntu.com/daily/server/zesty/20170728/zesty-server-cloudimg-amd64.img
zesty 20170728 disk1.img e75de020d9df18af81cfc447460ed9cc87ef5ecb7e4975c061744b17de668d48 http://cloud-images.ubuntu.com/daily/server/zesty/20170728/zesty-server-cloudimg-arm64.img
zesty 20170728 disk1.img 50ffbe6dfb0ae92ce7b7db7a45c2fb81382e818073694315d4119d5e5fc493e9 http://cloud-images.ubuntu.com/daily/server/zesty/20170728/zesty-server-cloudimg-armhf.img
zesty 20170728 disk1.img c0e3233e4eeb82c7440bca81f306275f50139111376ceec3477bf2e0791386fd http://cloud-images.ubuntu.com/daily/server/zesty/20170728/zesty-server-cloudimg-i386.img
zesty 20170728 disk1.img b5eb672067a23017adc0dba44ac79a73262193732f50cb5fbfcca4ea5b449506 http://cloud-images.ubuntu.com/daily/server/zesty/20170728/zesty-server-cloudimg-ppc64el.img
zesty 20170728 disk1.img 3ac3790d9a6db9ee78951230d035beea26a74d9e995de89abdaeec48aad5d2df http://cloud-images.ubuntu.com/daily/server/zesty/20170728/zesty-server-cloudimg-s390x.img
artful 20170731 disk1.img 9a8d9514f7e93a76a2437aacc51337a3ce16ea614018b1fa9106d3c528369c43 http://cloud-images.ubuntu.com/daily/server/artful/20170731/artful-server-cloudimg-amd64.img
artful 20170731 disk1.img 50ceacb40090f22d004b88ad95d22c036622a6f464d87c55b41ad663d023e838 http://cloud-images.ubuntu.com/daily/server/artful/20170731/artful-server-cloudimg-arm64.img
artful 20170731 disk1.img 069f97e40baba412d7bde47700cf68b619a7778a28e5207f9a4ff18ef312f83c http://cloud-images.ubuntu.com/daily/server/artful/20170731/artful-server-cloudimg-armhf.img
artful 20170731 disk1.img c43b0ad2936fff7206d4d28302657082de3dc87b64e9e010f998654afb936bf5 http://cloud-images.ubuntu.com/daily/server/artful/20170731/artful-server-cloudimg-i386.img
artful 20170731 disk1.img c6e6af1962b4ec342f633ff7e352699a00330201fa7f12e393e2d1d915d19a57 http://cloud-images.ubuntu.com/daily/server/artful/20170731/artful-server-cloudimg-ppc64el.img
artful 20170731 disk1.img 30d0a372dcd5664fbe403c6a41bcb7e0c3f9e2f00b35dd6b11bf662df88d4b29 http://cloud-images.ubuntu.com/daily/server/artful/20170731/artful-server-cloudimg-s390x.img