{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:XCTNZQ632U47WERTCL6IMQYL7Y","short_pith_number":"pith:XCTNZQ63","canonical_record":{"source":{"id":"1907.09481","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-07-22T18:00:00Z","cross_cats_sorted":[],"title_canon_sha256":"165d2fe90132c57addbbafc049d509b4c9ab5dece3770f54fde0a8de798eb3e7","abstract_canon_sha256":"d4fee087d89e0d4af86df454bef3e0caa9524dcbaa0a42799536169f0ed51172"},"schema_version":"1.0"},"canonical_sha256":"b8a6dcc3dbd539fb123312fc86430bfe0fd9f916e45003547f44b574c18087c6","source":{"kind":"arxiv","id":"1907.09481","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.09481","created_at":"2026-07-05T00:18:38Z"},{"alias_kind":"arxiv_version","alias_value":"1907.09481v2","created_at":"2026-07-05T00:18:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.09481","created_at":"2026-07-05T00:18:38Z"},{"alias_kind":"pith_short_12","alias_value":"XCTNZQ632U47","created_at":"2026-07-05T00:18:38Z"},{"alias_kind":"pith_short_16","alias_value":"XCTNZQ632U47WERT","created_at":"2026-07-05T00:18:38Z"},{"alias_kind":"pith_short_8","alias_value":"XCTNZQ63","created_at":"2026-07-05T00:18:38Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:XCTNZQ632U47WERTCL6IMQYL7Y","target":"record","payload":{"canonical_record":{"source":{"id":"1907.09481","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-07-22T18:00:00Z","cross_cats_sorted":[],"title_canon_sha256":"165d2fe90132c57addbbafc049d509b4c9ab5dece3770f54fde0a8de798eb3e7","abstract_canon_sha256":"d4fee087d89e0d4af86df454bef3e0caa9524dcbaa0a42799536169f0ed51172"},"schema_version":"1.0"},"canonical_sha256":"b8a6dcc3dbd539fb123312fc86430bfe0fd9f916e45003547f44b574c18087c6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:18:38.635501Z","signature_b64":"yj9loDjWKgBbNYo3MPwT57s8WWaghwl8isvevBWQUyoEfrNaL7U5vKslu+2Jme6hV/CxiteE9qRJLY1gOBIIBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b8a6dcc3dbd539fb123312fc86430bfe0fd9f916e45003547f44b574c18087c6","last_reissued_at":"2026-07-05T00:18:38.635023Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:18:38.635023Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1907.09481","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T00:18:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AtUV4ZqBYUs8EmHBRil685JuXyHRp31Fdp7YcwZQ2jHI3/fS6SpLgvFBUhhQN0MWOScjxiuzM/3U1VIaka1JDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-08T18:03:07.784073Z"},"content_sha256":"d3e47226ca27310fff062d089af70de2296ad443e42237c4cf8a0880efaf3aa4","schema_version":"1.0","event_id":"sha256:d3e47226ca27310fff062d089af70de2296ad443e42237c4cf8a0880efaf3aa4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:XCTNZQ632U47WERTCL6IMQYL7Y","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Southern Stellar Stream Spectroscopic Survey (${S}^5$): Overview, Target Selection, Data Reduction, Validation, and Early Science","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"A. B. Pace, A. D. Mackey, A. Drlica-Wagner, A. K. Vivas, A. P. Ji, A. R. Casey, B. Yanny, D. B. Zucker, D. Erkal, D. L. Tucker, E. Balbinot, G. F. Lewis, G. M. De Silva, G. S. Da Costa, J. Bland-Hawthorn, J. D. Simon, J. D. Simpson, J. R. Mould, K. Bechtol, K. Kuehn, L. Cullinane, M. Geha, N. Shipp, R. H. Wechsler, S. Allam, S. E. Koposov, S. L. Martell, S. Sharma, T. S. Li, V. Belokurov, Y.-Y. Mao, Z. Wan","submitted_at":"2019-07-22T18:00:00Z","abstract_excerpt":"We introduce the Southern Stellar Stream Spectroscopy Survey (${S}^5$), an on-going program to map the kinematics and chemistry of stellar streams in the Southern Hemisphere. The initial focus of ${S}^5$ has been spectroscopic observations of recently identified streams within the footprint of the Dark Energy Survey (DES), with the eventual goal of surveying streams across the entire southern sky. Stellar streams are composed of material that has been tidally striped from dwarf galaxies and globular clusters and hence are excellent dynamical probes of the gravitational potential of the Milky W"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.09481","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1907.09481/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T00:18:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zTW2rVFoLZg6HkkKisAMceih4H//8LfzWiOvq8/gNfx2q7hk/DS53l4NLJ8/q2ald6Ycn+8Jns2J/MfVccXmAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-08T18:03:07.785019Z"},"content_sha256":"b6732d95a7d876082eaf6fe8d688ec04ffb1ddba9cf42858c49cdaf50763cd42","schema_version":"1.0","event_id":"sha256:b6732d95a7d876082eaf6fe8d688ec04ffb1ddba9cf42858c49cdaf50763cd42"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XCTNZQ632U47WERTCL6IMQYL7Y/bundle.json","state_url":"https://pith.science/pith/XCTNZQ632U47WERTCL6IMQYL7Y/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XCTNZQ632U47WERTCL6IMQYL7Y/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":"2026-08-08T18:03:07Z","links":{"resolver":"https://pith.science/pith/XCTNZQ632U47WERTCL6IMQYL7Y","bundle":"https://pith.science/pith/XCTNZQ632U47WERTCL6IMQYL7Y/bundle.json","state":"https://pith.science/pith/XCTNZQ632U47WERTCL6IMQYL7Y/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XCTNZQ632U47WERTCL6IMQYL7Y/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:XCTNZQ632U47WERTCL6IMQYL7Y","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":"d4fee087d89e0d4af86df454bef3e0caa9524dcbaa0a42799536169f0ed51172","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-07-22T18:00:00Z","title_canon_sha256":"165d2fe90132c57addbbafc049d509b4c9ab5dece3770f54fde0a8de798eb3e7"},"schema_version":"1.0","source":{"id":"1907.09481","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.09481","created_at":"2026-07-05T00:18:38Z"},{"alias_kind":"arxiv_version","alias_value":"1907.09481v2","created_at":"2026-07-05T00:18:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.09481","created_at":"2026-07-05T00:18:38Z"},{"alias_kind":"pith_short_12","alias_value":"XCTNZQ632U47","created_at":"2026-07-05T00:18:38Z"},{"alias_kind":"pith_short_16","alias_value":"XCTNZQ632U47WERT","created_at":"2026-07-05T00:18:38Z"},{"alias_kind":"pith_short_8","alias_value":"XCTNZQ63","created_at":"2026-07-05T00:18:38Z"}],"graph_snapshots":[{"event_id":"sha256:b6732d95a7d876082eaf6fe8d688ec04ffb1ddba9cf42858c49cdaf50763cd42","target":"graph","created_at":"2026-07-05T00:18:38Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/1907.09481/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We introduce the Southern Stellar Stream Spectroscopy Survey (${S}^5$), an on-going program to map the kinematics and chemistry of stellar streams in the Southern Hemisphere. The initial focus of ${S}^5$ has been spectroscopic observations of recently identified streams within the footprint of the Dark Energy Survey (DES), with the eventual goal of surveying streams across the entire southern sky. Stellar streams are composed of material that has been tidally striped from dwarf galaxies and globular clusters and hence are excellent dynamical probes of the gravitational potential of the Milky W","authors_text":"A. B. Pace, A. D. Mackey, A. Drlica-Wagner, A. K. Vivas, A. P. Ji, A. R. Casey, B. Yanny, D. B. Zucker, D. Erkal, D. L. Tucker, E. Balbinot, G. F. Lewis, G. M. De Silva, G. S. Da Costa, J. Bland-Hawthorn, J. D. Simon, J. D. Simpson, J. R. Mould, K. Bechtol, K. Kuehn, L. Cullinane, M. Geha, N. Shipp, R. H. Wechsler, S. Allam, S. E. Koposov, S. L. Martell, S. Sharma, T. S. Li, V. Belokurov, Y.-Y. Mao, Z. Wan","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-07-22T18:00:00Z","title":"The Southern Stellar Stream Spectroscopic Survey (${S}^5$): Overview, Target Selection, Data Reduction, Validation, and Early Science"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.09481","kind":"arxiv","version":2},"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:d3e47226ca27310fff062d089af70de2296ad443e42237c4cf8a0880efaf3aa4","target":"record","created_at":"2026-07-05T00:18:38Z","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":"d4fee087d89e0d4af86df454bef3e0caa9524dcbaa0a42799536169f0ed51172","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-07-22T18:00:00Z","title_canon_sha256":"165d2fe90132c57addbbafc049d509b4c9ab5dece3770f54fde0a8de798eb3e7"},"schema_version":"1.0","source":{"id":"1907.09481","kind":"arxiv","version":2}},"canonical_sha256":"b8a6dcc3dbd539fb123312fc86430bfe0fd9f916e45003547f44b574c18087c6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b8a6dcc3dbd539fb123312fc86430bfe0fd9f916e45003547f44b574c18087c6","first_computed_at":"2026-07-05T00:18:38.635023Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:18:38.635023Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"yj9loDjWKgBbNYo3MPwT57s8WWaghwl8isvevBWQUyoEfrNaL7U5vKslu+2Jme6hV/CxiteE9qRJLY1gOBIIBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T00:18:38.635501Z","signed_message":"canonical_sha256_bytes"},"source_id":"1907.09481","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d3e47226ca27310fff062d089af70de2296ad443e42237c4cf8a0880efaf3aa4","sha256:b6732d95a7d876082eaf6fe8d688ec04ffb1ddba9cf42858c49cdaf50763cd42"],"state_sha256":"adec623ba15042a1b244f13c25574bf2e3de4ad7964660a2b48294c5d4e1683d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Qemnnc/9FuSvlve0qsnAENQ8LdmRB9UtgKVjjSb7Xt3z2RWPMZqIoxB9lu7mztTpG6htAb1eiYKf+aQ4/z7HBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-08T18:03:07.825290Z","bundle_sha256":"94f5bf516be82f2fd34975b2ef337e0b31e0fc18c2668a9d7caa0da7949210cd"}}