{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:6AGC2SU7T6G33PHLUTNLI3UXBB","short_pith_number":"pith:6AGC2SU7","canonical_record":{"source":{"id":"2003.03402","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-03-06T19:17:42Z","cross_cats_sorted":[],"title_canon_sha256":"651805dfde091826862a9b95a2b39cad4f4b4bbd78109f57b74d5db1adbffedc","abstract_canon_sha256":"ed2c224725557569e21529a3e27b459e1566c5d695a22667aeed83859062f2f3"},"schema_version":"1.0"},"canonical_sha256":"f00c2d4a9f9f8dbdbceba4dab46e97084f5dbfcffcb268c53351a3f76779ac8e","source":{"kind":"arxiv","id":"2003.03402","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2003.03402","created_at":"2026-07-05T01:32:01Z"},{"alias_kind":"arxiv_version","alias_value":"2003.03402v2","created_at":"2026-07-05T01:32:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2003.03402","created_at":"2026-07-05T01:32:01Z"},{"alias_kind":"pith_short_12","alias_value":"6AGC2SU7T6G3","created_at":"2026-07-05T01:32:01Z"},{"alias_kind":"pith_short_16","alias_value":"6AGC2SU7T6G33PHL","created_at":"2026-07-05T01:32:01Z"},{"alias_kind":"pith_short_8","alias_value":"6AGC2SU7","created_at":"2026-07-05T01:32:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:6AGC2SU7T6G33PHLUTNLI3UXBB","target":"record","payload":{"canonical_record":{"source":{"id":"2003.03402","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-03-06T19:17:42Z","cross_cats_sorted":[],"title_canon_sha256":"651805dfde091826862a9b95a2b39cad4f4b4bbd78109f57b74d5db1adbffedc","abstract_canon_sha256":"ed2c224725557569e21529a3e27b459e1566c5d695a22667aeed83859062f2f3"},"schema_version":"1.0"},"canonical_sha256":"f00c2d4a9f9f8dbdbceba4dab46e97084f5dbfcffcb268c53351a3f76779ac8e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:32:01.146214Z","signature_b64":"nDJX1hzY3fiWEbH4dat9T6uYggq6lXDuRmytHCNMSqpdPf1KqH9GvYVptJ++v6uQcUYK/DOS3wFh/ArqPsO9Cg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f00c2d4a9f9f8dbdbceba4dab46e97084f5dbfcffcb268c53351a3f76779ac8e","last_reissued_at":"2026-07-05T01:32:01.145759Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:32:01.145759Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2003.03402","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":"2026-07-05T01:32:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dRQAot0hoQiaMdfHZXe5WzXC1tsRhAjkqbVPZ3wvJypBUMkLQ/eqvZuX4f8XxK9WpGWQkLRCGbsCKkbJJzgyBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T11:19:25.730520Z"},"content_sha256":"4972fbebfa11652398260544a55e4940b724b00dfc5c159d31844ff4fbf74717","schema_version":"1.0","event_id":"sha256:4972fbebfa11652398260544a55e4940b724b00dfc5c159d31844ff4fbf74717"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:6AGC2SU7T6G33PHLUTNLI3UXBB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The baryonic Tully-Fisher relation in the Simba simulation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"E. Elson, M. Glowacki, R. Dav\\'e","submitted_at":"2020-03-06T19:17:42Z","abstract_excerpt":"We investigate the Baryonic Tully-Fisher Relation (BTFR) in the $(100\\,h^{-1}{\\rm Mpc})^3$ Simba hydrodynamical galaxy formation simulation together with a higher-resolution $(25\\,h^{-1}{\\rm Mpc})^3$ Simba run, for over $10,000$ disk-dominated, HI-rich galaxies. We generate simulated galaxy rotation curves from the mass distribution, which we show yields similar results to using the gas rotational velocities. From this we measure the galaxy rotation velocity $V_{\\rm circ}$ using four metrics: $V_{\\rm max}, V_{\\rm flat}, V_{2R_e},$ and $V_{\\rm polyex}$. We compare the predicted BTFR to the SPAR"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2003.03402","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/2003.03402/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":"2026-07-05T01:32:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nc3J5x8jrDbFfhDzfe7auvT7EjHL2AEf8suBLnV53eAycbA2hkmflwjoV+1N60S4JVfCGe4InzupPQAAs2c4Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T11:19:25.730890Z"},"content_sha256":"f7c1ca7e3a56366edbb9224177c6b0bbf97f9fd02b466cb4b6a3d4ce2a843c2c","schema_version":"1.0","event_id":"sha256:f7c1ca7e3a56366edbb9224177c6b0bbf97f9fd02b466cb4b6a3d4ce2a843c2c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6AGC2SU7T6G33PHLUTNLI3UXBB/bundle.json","state_url":"https://pith.science/pith/6AGC2SU7T6G33PHLUTNLI3UXBB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6AGC2SU7T6G33PHLUTNLI3UXBB/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":"2026-07-07T11:19:25Z","links":{"resolver":"https://pith.science/pith/6AGC2SU7T6G33PHLUTNLI3UXBB","bundle":"https://pith.science/pith/6AGC2SU7T6G33PHLUTNLI3UXBB/bundle.json","state":"https://pith.science/pith/6AGC2SU7T6G33PHLUTNLI3UXBB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6AGC2SU7T6G33PHLUTNLI3UXBB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:6AGC2SU7T6G33PHLUTNLI3UXBB","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":"ed2c224725557569e21529a3e27b459e1566c5d695a22667aeed83859062f2f3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-03-06T19:17:42Z","title_canon_sha256":"651805dfde091826862a9b95a2b39cad4f4b4bbd78109f57b74d5db1adbffedc"},"schema_version":"1.0","source":{"id":"2003.03402","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2003.03402","created_at":"2026-07-05T01:32:01Z"},{"alias_kind":"arxiv_version","alias_value":"2003.03402v2","created_at":"2026-07-05T01:32:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2003.03402","created_at":"2026-07-05T01:32:01Z"},{"alias_kind":"pith_short_12","alias_value":"6AGC2SU7T6G3","created_at":"2026-07-05T01:32:01Z"},{"alias_kind":"pith_short_16","alias_value":"6AGC2SU7T6G33PHL","created_at":"2026-07-05T01:32:01Z"},{"alias_kind":"pith_short_8","alias_value":"6AGC2SU7","created_at":"2026-07-05T01:32:01Z"}],"graph_snapshots":[{"event_id":"sha256:f7c1ca7e3a56366edbb9224177c6b0bbf97f9fd02b466cb4b6a3d4ce2a843c2c","target":"graph","created_at":"2026-07-05T01:32:01Z","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/2003.03402/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We investigate the Baryonic Tully-Fisher Relation (BTFR) in the $(100\\,h^{-1}{\\rm Mpc})^3$ Simba hydrodynamical galaxy formation simulation together with a higher-resolution $(25\\,h^{-1}{\\rm Mpc})^3$ Simba run, for over $10,000$ disk-dominated, HI-rich galaxies. We generate simulated galaxy rotation curves from the mass distribution, which we show yields similar results to using the gas rotational velocities. From this we measure the galaxy rotation velocity $V_{\\rm circ}$ using four metrics: $V_{\\rm max}, V_{\\rm flat}, V_{2R_e},$ and $V_{\\rm polyex}$. We compare the predicted BTFR to the SPAR","authors_text":"E. Elson, M. Glowacki, R. Dav\\'e","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-03-06T19:17:42Z","title":"The baryonic Tully-Fisher relation in the Simba simulation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2003.03402","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":"sha256:4972fbebfa11652398260544a55e4940b724b00dfc5c159d31844ff4fbf74717","target":"record","created_at":"2026-07-05T01:32:01Z","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":"ed2c224725557569e21529a3e27b459e1566c5d695a22667aeed83859062f2f3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-03-06T19:17:42Z","title_canon_sha256":"651805dfde091826862a9b95a2b39cad4f4b4bbd78109f57b74d5db1adbffedc"},"schema_version":"1.0","source":{"id":"2003.03402","kind":"arxiv","version":2}},"canonical_sha256":"f00c2d4a9f9f8dbdbceba4dab46e97084f5dbfcffcb268c53351a3f76779ac8e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f00c2d4a9f9f8dbdbceba4dab46e97084f5dbfcffcb268c53351a3f76779ac8e","first_computed_at":"2026-07-05T01:32:01.145759Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:32:01.145759Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"nDJX1hzY3fiWEbH4dat9T6uYggq6lXDuRmytHCNMSqpdPf1KqH9GvYVptJ++v6uQcUYK/DOS3wFh/ArqPsO9Cg==","signature_status":"signed_v1","signed_at":"2026-07-05T01:32:01.146214Z","signed_message":"canonical_sha256_bytes"},"source_id":"2003.03402","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4972fbebfa11652398260544a55e4940b724b00dfc5c159d31844ff4fbf74717","sha256:f7c1ca7e3a56366edbb9224177c6b0bbf97f9fd02b466cb4b6a3d4ce2a843c2c"],"state_sha256":"770d710672d41e25795a948dee12fb8f1744f20b18d3c33157dbe9cd96841809"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YNvCtdIupoHhCv5lEMF3Irm3amTxaqqx72IeZaUUI0IhJlb0UjNwrrU/JlPpZG5hZ9Jh6XnPgVafmq1Rd3KHDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T11:19:25.732818Z","bundle_sha256":"41b4702ee5fd6593d8751bc9020c195ff9135db70a91453d9d1478508513e1e7"}}