{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:GUVQCBHODVZLZVWBGTZC2YCNVS","short_pith_number":"pith:GUVQCBHO","canonical_record":{"source":{"id":"1804.07306","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-04-19T18:00:02Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"4e8af0d59a48e501d20b4cc3394110c74ff0fd387335f37608dbac1c73592c5c","abstract_canon_sha256":"1de4509c0f5235c4673743a24ff41339af6bc01da192f499813e73760b7c42f2"},"schema_version":"1.0"},"canonical_sha256":"352b0104ee1d72bcd6c134f22d604dac84a6733511a9434ea38aa26fee0a0b4f","source":{"kind":"arxiv","id":"1804.07306","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.07306","created_at":"2026-07-04T23:51:34Z"},{"alias_kind":"arxiv_version","alias_value":"1804.07306v1","created_at":"2026-07-04T23:51:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.07306","created_at":"2026-07-04T23:51:34Z"},{"alias_kind":"pith_short_12","alias_value":"GUVQCBHODVZL","created_at":"2026-07-04T23:51:34Z"},{"alias_kind":"pith_short_16","alias_value":"GUVQCBHODVZLZVWB","created_at":"2026-07-04T23:51:34Z"},{"alias_kind":"pith_short_8","alias_value":"GUVQCBHO","created_at":"2026-07-04T23:51:34Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:GUVQCBHODVZLZVWBGTZC2YCNVS","target":"record","payload":{"canonical_record":{"source":{"id":"1804.07306","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-04-19T18:00:02Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"4e8af0d59a48e501d20b4cc3394110c74ff0fd387335f37608dbac1c73592c5c","abstract_canon_sha256":"1de4509c0f5235c4673743a24ff41339af6bc01da192f499813e73760b7c42f2"},"schema_version":"1.0"},"canonical_sha256":"352b0104ee1d72bcd6c134f22d604dac84a6733511a9434ea38aa26fee0a0b4f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T23:51:34.841758Z","signature_b64":"SbJBV7dwJYY+0ZhPubDvioTTrMxCSmYz2kzEci9cyk9MAlXSn1QBdwluKGxCl1XViOemUmMCueCRrqtx1ibLDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"352b0104ee1d72bcd6c134f22d604dac84a6733511a9434ea38aa26fee0a0b4f","last_reissued_at":"2026-07-04T23:51:34.841274Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T23:51:34.841274Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1804.07306","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":"2026-07-04T23:51:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2VJnlU+4wqBhk77h/Nb5kAhb77TKJwK0v0PuVL1GQTJkZvgetWx6YFLknSYiY7V9wvEzGbNnCnWuPZ6CIo3ACA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-20T21:10:41.583615Z"},"content_sha256":"fae6602ed7dd314564af3d7d9a48e77a74848503467d564ae12bc56c295ea34f","schema_version":"1.0","event_id":"sha256:fae6602ed7dd314564af3d7d9a48e77a74848503467d564ae12bc56c295ea34f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:GUVQCBHODVZLZVWBGTZC2YCNVS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Is the dark-matter halo spin a predictor of galaxy spin and size?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"10) ((1) HUJI, (10) Rutgers), 2), (2) UCSC SCIPP, (3) Universit\\\"at Heidelberg, (4) UCSC Physics, (5) UCSC Astronomy, (6) NYU Abu Dhabi, 7), (7) MPIA, (8) Flatiron Institute CCA, 9), (9) Columbia University, Aaron Dutton (6), Andrea V. Macci\\`o (6, Avishai Dekel (1, Daniel Ceverino (3), Fangzhou Jiang (1), Joel R. Primack (4), Omer Kneller (1), Rachel S. Somerville (8, Sandra M. Faber (5), Sharon Lapiner (1), Shy Genel (8","submitted_at":"2018-04-19T18:00:02Z","abstract_excerpt":"The similarity between the distributions of spins for galaxies ($\\lambda_{\\rm g}$) and for dark-matter haloes ($\\lambda_{\\rm h}$), indicated both by simulations and observations, is naively interpreted as a one-to-one correlation between the spins of a galaxy and its host halo. This is used to predict galaxy sizes in semi-analytic models via $R_{\\rm e}\\simeq\\lambda_{\\rm h} R_{\\rm v}$, with $R_{\\rm e}$ the half-mass radius of the galaxy and $R_{\\rm v}$ the halo radius. Utilizing two different suites of zoom-in cosmological simulations, we find that $\\lambda_{\\rm g}$ and $\\lambda_{\\rm h}$ are in"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.07306","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/1804.07306/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":"2026-07-04T23:51:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9RzIFOdXDvIDvjMLKqVemuT+MygmkgDf6EmV+TOMLkQ7UmWFlpmHkg6c7FgGdRKjGq1qK4fJcuAYVLnJ0aaYDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-20T21:10:41.584145Z"},"content_sha256":"a5acb8dac35fdc9263ec342bd9f049e60019042cc8192a5a2143bbe63ed5efe2","schema_version":"1.0","event_id":"sha256:a5acb8dac35fdc9263ec342bd9f049e60019042cc8192a5a2143bbe63ed5efe2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GUVQCBHODVZLZVWBGTZC2YCNVS/bundle.json","state_url":"https://pith.science/pith/GUVQCBHODVZLZVWBGTZC2YCNVS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GUVQCBHODVZLZVWBGTZC2YCNVS/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":"2026-08-20T21:10:41Z","links":{"resolver":"https://pith.science/pith/GUVQCBHODVZLZVWBGTZC2YCNVS","bundle":"https://pith.science/pith/GUVQCBHODVZLZVWBGTZC2YCNVS/bundle.json","state":"https://pith.science/pith/GUVQCBHODVZLZVWBGTZC2YCNVS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GUVQCBHODVZLZVWBGTZC2YCNVS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:GUVQCBHODVZLZVWBGTZC2YCNVS","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":"1de4509c0f5235c4673743a24ff41339af6bc01da192f499813e73760b7c42f2","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-04-19T18:00:02Z","title_canon_sha256":"4e8af0d59a48e501d20b4cc3394110c74ff0fd387335f37608dbac1c73592c5c"},"schema_version":"1.0","source":{"id":"1804.07306","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.07306","created_at":"2026-07-04T23:51:34Z"},{"alias_kind":"arxiv_version","alias_value":"1804.07306v1","created_at":"2026-07-04T23:51:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.07306","created_at":"2026-07-04T23:51:34Z"},{"alias_kind":"pith_short_12","alias_value":"GUVQCBHODVZL","created_at":"2026-07-04T23:51:34Z"},{"alias_kind":"pith_short_16","alias_value":"GUVQCBHODVZLZVWB","created_at":"2026-07-04T23:51:34Z"},{"alias_kind":"pith_short_8","alias_value":"GUVQCBHO","created_at":"2026-07-04T23:51:34Z"}],"graph_snapshots":[{"event_id":"sha256:a5acb8dac35fdc9263ec342bd9f049e60019042cc8192a5a2143bbe63ed5efe2","target":"graph","created_at":"2026-07-04T23:51:34Z","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/1804.07306/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The similarity between the distributions of spins for galaxies ($\\lambda_{\\rm g}$) and for dark-matter haloes ($\\lambda_{\\rm h}$), indicated both by simulations and observations, is naively interpreted as a one-to-one correlation between the spins of a galaxy and its host halo. This is used to predict galaxy sizes in semi-analytic models via $R_{\\rm e}\\simeq\\lambda_{\\rm h} R_{\\rm v}$, with $R_{\\rm e}$ the half-mass radius of the galaxy and $R_{\\rm v}$ the halo radius. Utilizing two different suites of zoom-in cosmological simulations, we find that $\\lambda_{\\rm g}$ and $\\lambda_{\\rm h}$ are in","authors_text":"10) ((1) HUJI, (10) Rutgers), 2), (2) UCSC SCIPP, (3) Universit\\\"at Heidelberg, (4) UCSC Physics, (5) UCSC Astronomy, (6) NYU Abu Dhabi, 7), (7) MPIA, (8) Flatiron Institute CCA, 9), (9) Columbia University, Aaron Dutton (6), Andrea V. Macci\\`o (6, Avishai Dekel (1, Daniel Ceverino (3), Fangzhou Jiang (1), Joel R. Primack (4), Omer Kneller (1), Rachel S. Somerville (8, Sandra M. Faber (5), Sharon Lapiner (1), Shy Genel (8","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-04-19T18:00:02Z","title":"Is the dark-matter halo spin a predictor of galaxy spin and size?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.07306","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:fae6602ed7dd314564af3d7d9a48e77a74848503467d564ae12bc56c295ea34f","target":"record","created_at":"2026-07-04T23:51:34Z","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":"1de4509c0f5235c4673743a24ff41339af6bc01da192f499813e73760b7c42f2","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-04-19T18:00:02Z","title_canon_sha256":"4e8af0d59a48e501d20b4cc3394110c74ff0fd387335f37608dbac1c73592c5c"},"schema_version":"1.0","source":{"id":"1804.07306","kind":"arxiv","version":1}},"canonical_sha256":"352b0104ee1d72bcd6c134f22d604dac84a6733511a9434ea38aa26fee0a0b4f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"352b0104ee1d72bcd6c134f22d604dac84a6733511a9434ea38aa26fee0a0b4f","first_computed_at":"2026-07-04T23:51:34.841274Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T23:51:34.841274Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"SbJBV7dwJYY+0ZhPubDvioTTrMxCSmYz2kzEci9cyk9MAlXSn1QBdwluKGxCl1XViOemUmMCueCRrqtx1ibLDw==","signature_status":"signed_v1","signed_at":"2026-07-04T23:51:34.841758Z","signed_message":"canonical_sha256_bytes"},"source_id":"1804.07306","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fae6602ed7dd314564af3d7d9a48e77a74848503467d564ae12bc56c295ea34f","sha256:a5acb8dac35fdc9263ec342bd9f049e60019042cc8192a5a2143bbe63ed5efe2"],"state_sha256":"45b4b9fa9520ae69fbeb9bcf21b1d88deab724272a50160792a20a5ce4060982"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lIsSc6Qa6X8odXDah9q7/oorUipWqzvoF+NFgZ2jvQWJSUjsWo3cmk/5FEWHd+Wu/mCoJf8LoWO9BRAmvIt/Bw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-20T21:10:41.589995Z","bundle_sha256":"d745b9f2a04af8dbf8b218b7616334c89df2bd0441d6b64b489b8f43dd3f0069"}}