{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:57SR4WDE3XJ5PAK5NUJSQUN7DR","short_pith_number":"pith:57SR4WDE","canonical_record":{"source":{"id":"1708.01617","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-08-04T18:00:00Z","cross_cats_sorted":["astro-ph.CO","astro-ph.IM"],"title_canon_sha256":"63b4f94653ea7f2776e3a4b8fb61919a1d1384b05381e4017542343f9dc42f74","abstract_canon_sha256":"6c633e3ae9f6e5e42414949935b7ce6b339ebfc4b67b75231ddbf582e5d67d41"},"schema_version":"1.0"},"canonical_sha256":"efe51e5864ddd3d7815d6d132851bf1c42c37ba61d575cae346a98549c65a3fc","source":{"kind":"arxiv","id":"1708.01617","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1708.01617","created_at":"2026-05-18T00:38:35Z"},{"alias_kind":"arxiv_version","alias_value":"1708.01617v1","created_at":"2026-05-18T00:38:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1708.01617","created_at":"2026-05-18T00:38:35Z"},{"alias_kind":"pith_short_12","alias_value":"57SR4WDE3XJ5","created_at":"2026-05-18T12:31:00Z"},{"alias_kind":"pith_short_16","alias_value":"57SR4WDE3XJ5PAK5","created_at":"2026-05-18T12:31:00Z"},{"alias_kind":"pith_short_8","alias_value":"57SR4WDE","created_at":"2026-05-18T12:31:00Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:57SR4WDE3XJ5PAK5NUJSQUN7DR","target":"record","payload":{"canonical_record":{"source":{"id":"1708.01617","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-08-04T18:00:00Z","cross_cats_sorted":["astro-ph.CO","astro-ph.IM"],"title_canon_sha256":"63b4f94653ea7f2776e3a4b8fb61919a1d1384b05381e4017542343f9dc42f74","abstract_canon_sha256":"6c633e3ae9f6e5e42414949935b7ce6b339ebfc4b67b75231ddbf582e5d67d41"},"schema_version":"1.0"},"canonical_sha256":"efe51e5864ddd3d7815d6d132851bf1c42c37ba61d575cae346a98549c65a3fc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:38:35.383214Z","signature_b64":"HQRRm0lo94R3RX+K5X2x/Ov4FHBg71BxndJilUXSukOYqz3XotNHoh0Svzf0sadJV8JZPn/xNvomaIfN1eVZBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"efe51e5864ddd3d7815d6d132851bf1c42c37ba61d575cae346a98549c65a3fc","last_reissued_at":"2026-05-18T00:38:35.382749Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:38:35.382749Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1708.01617","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:38:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pcZlmF2kCBk3MeLbiAkqwyLxFg/hedjRcHnETy256S9417ZIOLYXb3962sR7GHkfHeCwWRfVWu1SjEvbYOd/Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T20:47:53.102173Z"},"content_sha256":"1bd87b9f52dd17517ed38a9e03f8230bda2ca09a1bef17f00cb89efead94f820","schema_version":"1.0","event_id":"sha256:1bd87b9f52dd17517ed38a9e03f8230bda2ca09a1bef17f00cb89efead94f820"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:57SR4WDE3XJ5PAK5NUJSQUN7DR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Large Synoptic Survey Telescope Galaxies Science Roadmap","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","astro-ph.IM"],"primary_cat":"astro-ph.GA","authors_text":"Aaron Robotham, Andrea Grazian, Annette M. N. Ferguson, Aprajita Verma, Benne W. Holwerda, Brant E. Robertson, Camille Avestruz, Chris Lintott, Christopher J. Conselice, Dara J. Norman, Emiliano Merlin, Eric Gawiser, Gaspar Galaz, Graham P. Smith, Gregory F. Snyder, Henry C. Ferguson, Idit Zehavi, Ivan Lacerna, J. Anthony Tyson, Jeffrey A. Newman, Jennifer Lotz, Johan H. Knapen, John P. Stott, Jonathan Davies, Jon Loveday, Kirk D. Borne, Lee Armus, L. Felipe Barrientos, Malcom N. Bremer, Manda Banerji, Mark E. Dickinson, Matt J. Jarvis, Mauro Sereno, Members of the LSST Galaxies Science Collaboration, Michael C. Cooper, Nelson Padilla, Nicola R. Napolitano, Norbert Werner, Patricia B. Tissera, Peter Yoachim, Phil Marshall, Rebecca A. A. Bowler, Ricardo Demarco, Roger Davies, Samir Salim, Samuel J. Schmidt, Simon P. Driver, Sugata Kaviraj, Thomas H. Puzia, Vishal Kasliwal","submitted_at":"2017-08-04T18:00:00Z","abstract_excerpt":"The Large Synoptic Survey Telescope (LSST) will enable revolutionary studies of galaxies, dark matter, and black holes over cosmic time. The LSST Galaxies Science Collaboration has identified a host of preparatory research tasks required to leverage fully the LSST dataset for extragalactic science beyond the study of dark energy. This Galaxies Science Roadmap provides a brief introduction to critical extragalactic science to be conducted ahead of LSST operations, and a detailed list of preparatory science tasks including the motivation, activities, and deliverables associated with each. The Ga"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.01617","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:38:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"opwe7E98dDb4ERt7hDeCe2kQ1CGdZbxCj7qmRMbmuG1toj5w0k03DXu+QPZVhfIGhEK5Y+I1Qj0bP+wXLtpZDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T20:47:53.102795Z"},"content_sha256":"0d7cc0e4645cdc695f630475ad024288ca71e89ba96a73888bcd9d3d83d4c435","schema_version":"1.0","event_id":"sha256:0d7cc0e4645cdc695f630475ad024288ca71e89ba96a73888bcd9d3d83d4c435"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/57SR4WDE3XJ5PAK5NUJSQUN7DR/bundle.json","state_url":"https://pith.science/pith/57SR4WDE3XJ5PAK5NUJSQUN7DR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/57SR4WDE3XJ5PAK5NUJSQUN7DR/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-26T20:47:53Z","links":{"resolver":"https://pith.science/pith/57SR4WDE3XJ5PAK5NUJSQUN7DR","bundle":"https://pith.science/pith/57SR4WDE3XJ5PAK5NUJSQUN7DR/bundle.json","state":"https://pith.science/pith/57SR4WDE3XJ5PAK5NUJSQUN7DR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/57SR4WDE3XJ5PAK5NUJSQUN7DR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:57SR4WDE3XJ5PAK5NUJSQUN7DR","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"6c633e3ae9f6e5e42414949935b7ce6b339ebfc4b67b75231ddbf582e5d67d41","cross_cats_sorted":["astro-ph.CO","astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-08-04T18:00:00Z","title_canon_sha256":"63b4f94653ea7f2776e3a4b8fb61919a1d1384b05381e4017542343f9dc42f74"},"schema_version":"1.0","source":{"id":"1708.01617","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1708.01617","created_at":"2026-05-18T00:38:35Z"},{"alias_kind":"arxiv_version","alias_value":"1708.01617v1","created_at":"2026-05-18T00:38:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1708.01617","created_at":"2026-05-18T00:38:35Z"},{"alias_kind":"pith_short_12","alias_value":"57SR4WDE3XJ5","created_at":"2026-05-18T12:31:00Z"},{"alias_kind":"pith_short_16","alias_value":"57SR4WDE3XJ5PAK5","created_at":"2026-05-18T12:31:00Z"},{"alias_kind":"pith_short_8","alias_value":"57SR4WDE","created_at":"2026-05-18T12:31:00Z"}],"graph_snapshots":[{"event_id":"sha256:0d7cc0e4645cdc695f630475ad024288ca71e89ba96a73888bcd9d3d83d4c435","target":"graph","created_at":"2026-05-18T00:38:35Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"The Large Synoptic Survey Telescope (LSST) will enable revolutionary studies of galaxies, dark matter, and black holes over cosmic time. The LSST Galaxies Science Collaboration has identified a host of preparatory research tasks required to leverage fully the LSST dataset for extragalactic science beyond the study of dark energy. This Galaxies Science Roadmap provides a brief introduction to critical extragalactic science to be conducted ahead of LSST operations, and a detailed list of preparatory science tasks including the motivation, activities, and deliverables associated with each. The Ga","authors_text":"Aaron Robotham, Andrea Grazian, Annette M. N. Ferguson, Aprajita Verma, Benne W. Holwerda, Brant E. Robertson, Camille Avestruz, Chris Lintott, Christopher J. Conselice, Dara J. Norman, Emiliano Merlin, Eric Gawiser, Gaspar Galaz, Graham P. Smith, Gregory F. Snyder, Henry C. Ferguson, Idit Zehavi, Ivan Lacerna, J. Anthony Tyson, Jeffrey A. Newman, Jennifer Lotz, Johan H. Knapen, John P. Stott, Jonathan Davies, Jon Loveday, Kirk D. Borne, Lee Armus, L. Felipe Barrientos, Malcom N. Bremer, Manda Banerji, Mark E. Dickinson, Matt J. Jarvis, Mauro Sereno, Members of the LSST Galaxies Science Collaboration, Michael C. Cooper, Nelson Padilla, Nicola R. Napolitano, Norbert Werner, Patricia B. Tissera, Peter Yoachim, Phil Marshall, Rebecca A. A. Bowler, Ricardo Demarco, Roger Davies, Samir Salim, Samuel J. Schmidt, Simon P. Driver, Sugata Kaviraj, Thomas H. Puzia, Vishal Kasliwal","cross_cats":["astro-ph.CO","astro-ph.IM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-08-04T18:00:00Z","title":"Large Synoptic Survey Telescope Galaxies Science Roadmap"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.01617","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:1bd87b9f52dd17517ed38a9e03f8230bda2ca09a1bef17f00cb89efead94f820","target":"record","created_at":"2026-05-18T00:38:35Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"6c633e3ae9f6e5e42414949935b7ce6b339ebfc4b67b75231ddbf582e5d67d41","cross_cats_sorted":["astro-ph.CO","astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-08-04T18:00:00Z","title_canon_sha256":"63b4f94653ea7f2776e3a4b8fb61919a1d1384b05381e4017542343f9dc42f74"},"schema_version":"1.0","source":{"id":"1708.01617","kind":"arxiv","version":1}},"canonical_sha256":"efe51e5864ddd3d7815d6d132851bf1c42c37ba61d575cae346a98549c65a3fc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"efe51e5864ddd3d7815d6d132851bf1c42c37ba61d575cae346a98549c65a3fc","first_computed_at":"2026-05-18T00:38:35.382749Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:38:35.382749Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"HQRRm0lo94R3RX+K5X2x/Ov4FHBg71BxndJilUXSukOYqz3XotNHoh0Svzf0sadJV8JZPn/xNvomaIfN1eVZBg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:38:35.383214Z","signed_message":"canonical_sha256_bytes"},"source_id":"1708.01617","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1bd87b9f52dd17517ed38a9e03f8230bda2ca09a1bef17f00cb89efead94f820","sha256:0d7cc0e4645cdc695f630475ad024288ca71e89ba96a73888bcd9d3d83d4c435"],"state_sha256":"d53038a23d40a7d16f97273c21963cf87b9c9690418761faca6a4b2a07f474f9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"e5ZQDyAnV8flcaOdfZqvRtduCF+40H3fns66H2wgDf7L9rdIk3tOZtSYSwnhFnK4ZAybyEM7BgADW/Adxr8pAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T20:47:53.105414Z","bundle_sha256":"8fff59a59a06f695f21b07f3cd1740c3452e5a4cdb26c2cc2d119a2bb03e9301"}}