{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:HYGGUNPZCX5WECGREEGQCVH5XG","short_pith_number":"pith:HYGGUNPZ","canonical_record":{"source":{"id":"2106.15408","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-06-28T06:24:45Z","cross_cats_sorted":["astro-ph.EP","astro-ph.IM","astro-ph.SR"],"title_canon_sha256":"cc9640f0fcc4610e07c8e24065b9c52d2b0676be0da7a68ee6f5e721ffee3b70","abstract_canon_sha256":"28d859440569532d01af1934bb91d5f58651fd7824a2b3d6003b5f35879b6e15"},"schema_version":"1.0"},"canonical_sha256":"3e0c6a35f915fb6208d1210d0154fdb9b0f02fdf223cf9c02467063f9fd730e7","source":{"kind":"arxiv","id":"2106.15408","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2106.15408","created_at":"2026-07-05T02:53:17Z"},{"alias_kind":"arxiv_version","alias_value":"2106.15408v1","created_at":"2026-07-05T02:53:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2106.15408","created_at":"2026-07-05T02:53:17Z"},{"alias_kind":"pith_short_12","alias_value":"HYGGUNPZCX5W","created_at":"2026-07-05T02:53:17Z"},{"alias_kind":"pith_short_16","alias_value":"HYGGUNPZCX5WECGR","created_at":"2026-07-05T02:53:17Z"},{"alias_kind":"pith_short_8","alias_value":"HYGGUNPZ","created_at":"2026-07-05T02:53:17Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:HYGGUNPZCX5WECGREEGQCVH5XG","target":"record","payload":{"canonical_record":{"source":{"id":"2106.15408","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-06-28T06:24:45Z","cross_cats_sorted":["astro-ph.EP","astro-ph.IM","astro-ph.SR"],"title_canon_sha256":"cc9640f0fcc4610e07c8e24065b9c52d2b0676be0da7a68ee6f5e721ffee3b70","abstract_canon_sha256":"28d859440569532d01af1934bb91d5f58651fd7824a2b3d6003b5f35879b6e15"},"schema_version":"1.0"},"canonical_sha256":"3e0c6a35f915fb6208d1210d0154fdb9b0f02fdf223cf9c02467063f9fd730e7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:53:17.255903Z","signature_b64":"AvH952Xt4DQWCWbwNldzwoo1YRvHdLPAX+5s2dTydDwoIjEvkZgvTuJV52ce/DrWrgtDYABoce4kcvUZgaojCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3e0c6a35f915fb6208d1210d0154fdb9b0f02fdf223cf9c02467063f9fd730e7","last_reissued_at":"2026-07-05T02:53:17.255493Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:53:17.255493Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2106.15408","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":"2026-07-05T02:53:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"POCjPCOz+mE67D0WPjx3Eg1v62JjLWujxeXlgqJUG3FiTMdDD4+IGm3sW3tjvM+u+M0CwKrARwcHqtfmrTPeAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-08T22:47:11.229270Z"},"content_sha256":"470495b721ac9fa8bb6bd6a7c642f58b4cf31ba410564f104bafec9d2a1002a8","schema_version":"1.0","event_id":"sha256:470495b721ac9fa8bb6bd6a7c642f58b4cf31ba410564f104bafec9d2a1002a8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:HYGGUNPZCX5WECGREEGQCVH5XG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Gaia, Fundamental Physics, and Dark Matter","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.EP","astro-ph.IM","astro-ph.SR"],"primary_cat":"astro-ph.GA","authors_text":"Konstantin Zioutas, Michael Perryman","submitted_at":"2021-06-28T06:24:45Z","abstract_excerpt":"The Gaia space astrometry mission is measuring accurate distances and space motions of more than two billion stars throughout our Galaxy and beyond. This is a first look at how Gaia is contributing to fundamental physics, and in particular to our understanding of dark matter, for which a few examples are given from the current literature.\n  One of our goals is to illustrate how deep, and often surprising, insight into very diverse areas of fundamental physics can be extracted from this new and enormous high-accuracy stellar data set. In this spirit, we finish by suggesting a search for a conne"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2106.15408","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2106.15408/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":"2026-07-05T02:53:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uHgjI40nqZc9hUCcI8cDpqHlOrW7PqaBlxQk+7oG27lLF76RKfulUAuoRnWcZsOIi0agUG6mvDYEWm6ktrK1BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-08T22:47:11.229781Z"},"content_sha256":"671d4c4fb5e21ec66c38258a824558708023ae37a4fcacd14ae6bb54eb2c0bc3","schema_version":"1.0","event_id":"sha256:671d4c4fb5e21ec66c38258a824558708023ae37a4fcacd14ae6bb54eb2c0bc3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HYGGUNPZCX5WECGREEGQCVH5XG/bundle.json","state_url":"https://pith.science/pith/HYGGUNPZCX5WECGREEGQCVH5XG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HYGGUNPZCX5WECGREEGQCVH5XG/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":"2026-08-08T22:47:11Z","links":{"resolver":"https://pith.science/pith/HYGGUNPZCX5WECGREEGQCVH5XG","bundle":"https://pith.science/pith/HYGGUNPZCX5WECGREEGQCVH5XG/bundle.json","state":"https://pith.science/pith/HYGGUNPZCX5WECGREEGQCVH5XG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HYGGUNPZCX5WECGREEGQCVH5XG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:HYGGUNPZCX5WECGREEGQCVH5XG","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":"28d859440569532d01af1934bb91d5f58651fd7824a2b3d6003b5f35879b6e15","cross_cats_sorted":["astro-ph.EP","astro-ph.IM","astro-ph.SR"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-06-28T06:24:45Z","title_canon_sha256":"cc9640f0fcc4610e07c8e24065b9c52d2b0676be0da7a68ee6f5e721ffee3b70"},"schema_version":"1.0","source":{"id":"2106.15408","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2106.15408","created_at":"2026-07-05T02:53:17Z"},{"alias_kind":"arxiv_version","alias_value":"2106.15408v1","created_at":"2026-07-05T02:53:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2106.15408","created_at":"2026-07-05T02:53:17Z"},{"alias_kind":"pith_short_12","alias_value":"HYGGUNPZCX5W","created_at":"2026-07-05T02:53:17Z"},{"alias_kind":"pith_short_16","alias_value":"HYGGUNPZCX5WECGR","created_at":"2026-07-05T02:53:17Z"},{"alias_kind":"pith_short_8","alias_value":"HYGGUNPZ","created_at":"2026-07-05T02:53:17Z"}],"graph_snapshots":[{"event_id":"sha256:671d4c4fb5e21ec66c38258a824558708023ae37a4fcacd14ae6bb54eb2c0bc3","target":"graph","created_at":"2026-07-05T02:53:17Z","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/2106.15408/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The Gaia space astrometry mission is measuring accurate distances and space motions of more than two billion stars throughout our Galaxy and beyond. This is a first look at how Gaia is contributing to fundamental physics, and in particular to our understanding of dark matter, for which a few examples are given from the current literature.\n  One of our goals is to illustrate how deep, and often surprising, insight into very diverse areas of fundamental physics can be extracted from this new and enormous high-accuracy stellar data set. In this spirit, we finish by suggesting a search for a conne","authors_text":"Konstantin Zioutas, Michael Perryman","cross_cats":["astro-ph.EP","astro-ph.IM","astro-ph.SR"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-06-28T06:24:45Z","title":"Gaia, Fundamental Physics, and Dark Matter"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2106.15408","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":"sha256:470495b721ac9fa8bb6bd6a7c642f58b4cf31ba410564f104bafec9d2a1002a8","target":"record","created_at":"2026-07-05T02:53:17Z","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":"28d859440569532d01af1934bb91d5f58651fd7824a2b3d6003b5f35879b6e15","cross_cats_sorted":["astro-ph.EP","astro-ph.IM","astro-ph.SR"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-06-28T06:24:45Z","title_canon_sha256":"cc9640f0fcc4610e07c8e24065b9c52d2b0676be0da7a68ee6f5e721ffee3b70"},"schema_version":"1.0","source":{"id":"2106.15408","kind":"arxiv","version":1}},"canonical_sha256":"3e0c6a35f915fb6208d1210d0154fdb9b0f02fdf223cf9c02467063f9fd730e7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3e0c6a35f915fb6208d1210d0154fdb9b0f02fdf223cf9c02467063f9fd730e7","first_computed_at":"2026-07-05T02:53:17.255493Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:53:17.255493Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"AvH952Xt4DQWCWbwNldzwoo1YRvHdLPAX+5s2dTydDwoIjEvkZgvTuJV52ce/DrWrgtDYABoce4kcvUZgaojCQ==","signature_status":"signed_v1","signed_at":"2026-07-05T02:53:17.255903Z","signed_message":"canonical_sha256_bytes"},"source_id":"2106.15408","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:470495b721ac9fa8bb6bd6a7c642f58b4cf31ba410564f104bafec9d2a1002a8","sha256:671d4c4fb5e21ec66c38258a824558708023ae37a4fcacd14ae6bb54eb2c0bc3"],"state_sha256":"41da0154b4935121d30b20e3bc61b8627a73a5fda2ecefcbfb6735e8f3e84767"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jm+5Cit1xDgsn5pNY7CgfVKydrGgoE+Xr4DdfS+cEvZ9ATWDsr/Yt6m8DfVT+Dn8Z4HnyL63nKHn++QsAbBzAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-08T22:47:11.233592Z","bundle_sha256":"62ff3b9dcb4bd2dfc89456f85d63ab7620acd55cb719196d36e3e7255b9f6266"}}