{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:AZLID2XNSL6LXM2OCRNYJQTEEX","short_pith_number":"pith:AZLID2XN","canonical_record":{"source":{"id":"1906.01623","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-06-04T17:56:57Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"b21e343099a1021c1b3a367ec60d92e950639f0d9264d181b241cd3d0b6080de","abstract_canon_sha256":"1dfd2ed63eb16cf33a64653af5cd799f6bad5d0c8bae01b892973275e6184a9f"},"schema_version":"1.0"},"canonical_sha256":"065681eaed92fcbbb34e145b84c26425cc0b60a1f06a48f0a00d1dbcc8a58dc5","source":{"kind":"arxiv","id":"1906.01623","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1906.01623","created_at":"2026-07-05T00:38:02Z"},{"alias_kind":"arxiv_version","alias_value":"1906.01623v1","created_at":"2026-07-05T00:38:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1906.01623","created_at":"2026-07-05T00:38:02Z"},{"alias_kind":"pith_short_12","alias_value":"AZLID2XNSL6L","created_at":"2026-07-05T00:38:02Z"},{"alias_kind":"pith_short_16","alias_value":"AZLID2XNSL6LXM2O","created_at":"2026-07-05T00:38:02Z"},{"alias_kind":"pith_short_8","alias_value":"AZLID2XN","created_at":"2026-07-05T00:38:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:AZLID2XNSL6LXM2OCRNYJQTEEX","target":"record","payload":{"canonical_record":{"source":{"id":"1906.01623","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-06-04T17:56:57Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"b21e343099a1021c1b3a367ec60d92e950639f0d9264d181b241cd3d0b6080de","abstract_canon_sha256":"1dfd2ed63eb16cf33a64653af5cd799f6bad5d0c8bae01b892973275e6184a9f"},"schema_version":"1.0"},"canonical_sha256":"065681eaed92fcbbb34e145b84c26425cc0b60a1f06a48f0a00d1dbcc8a58dc5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:38:02.226442Z","signature_b64":"eiWc5zyL9RLclG3odW+F50YeyogXnZQT7oRrLwy9fkH0kzGtvm6KrR1oy4zRlSqmnaBM3U7bwZjtC3MjLqQHCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"065681eaed92fcbbb34e145b84c26425cc0b60a1f06a48f0a00d1dbcc8a58dc5","last_reissued_at":"2026-07-05T00:38:02.226012Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:38:02.226012Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1906.01623","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":"2026-07-05T00:38:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gbgS0WW3meoWXQa0sNOR6D2xB4Gsll+VAds1qKZxT2s1QoJyJlAvFLtVrFeyjUO499maJ7XGYgjLpzLXztRUCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T02:12:17.742555Z"},"content_sha256":"d036ee9f64e5c31e15a2fe0241e39154e18ea754acb3753e6d6d2573fcabc27c","schema_version":"1.0","event_id":"sha256:d036ee9f64e5c31e15a2fe0241e39154e18ea754acb3753e6d6d2573fcabc27c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:AZLID2XNSL6LXM2OCRNYJQTEEX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"And yet it flips: connecting galactic spin and the cosmic web","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"Christophe Pichon, Katarina Kraljic, Romeel Dave","submitted_at":"2019-06-04T17:56:57Z","abstract_excerpt":"We study the spin alignment of galaxies and halos with respect to filaments and walls of the cosmic web, identified with DisPerSE, using the SIMBA simulation from z=0-2. Massive halos' spins are oriented perpendicularly to their closest filament's axis and walls, while low mass halos tend to have their spins parallel to filaments and in the plane of walls. A similar mass-dependent spin flip is found for galaxies, albeit with a weaker signal particularly at low mass and low-z, suggesting that galaxies' spins retain memory of their larger-scale environment. Low-z star-forming and rotation-domina"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1906.01623","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/1906.01623/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":"2026-07-05T00:38:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"b1maf/2wqLWqdkS2VsYITXHjf/jWOILdFLAH0Nc+YitwOKaYTh91n77UNS6Q1c9C5WBgahElVP9wAFh3JgEzBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T02:12:17.743038Z"},"content_sha256":"a7a2f9f43cb4e8330bcf2d552d01f5eb898d16a1724f55570c908ca2d66cc6f6","schema_version":"1.0","event_id":"sha256:a7a2f9f43cb4e8330bcf2d552d01f5eb898d16a1724f55570c908ca2d66cc6f6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/AZLID2XNSL6LXM2OCRNYJQTEEX/bundle.json","state_url":"https://pith.science/pith/AZLID2XNSL6LXM2OCRNYJQTEEX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/AZLID2XNSL6LXM2OCRNYJQTEEX/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":"2026-08-05T02:12:17Z","links":{"resolver":"https://pith.science/pith/AZLID2XNSL6LXM2OCRNYJQTEEX","bundle":"https://pith.science/pith/AZLID2XNSL6LXM2OCRNYJQTEEX/bundle.json","state":"https://pith.science/pith/AZLID2XNSL6LXM2OCRNYJQTEEX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/AZLID2XNSL6LXM2OCRNYJQTEEX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:AZLID2XNSL6LXM2OCRNYJQTEEX","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":"1dfd2ed63eb16cf33a64653af5cd799f6bad5d0c8bae01b892973275e6184a9f","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-06-04T17:56:57Z","title_canon_sha256":"b21e343099a1021c1b3a367ec60d92e950639f0d9264d181b241cd3d0b6080de"},"schema_version":"1.0","source":{"id":"1906.01623","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1906.01623","created_at":"2026-07-05T00:38:02Z"},{"alias_kind":"arxiv_version","alias_value":"1906.01623v1","created_at":"2026-07-05T00:38:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1906.01623","created_at":"2026-07-05T00:38:02Z"},{"alias_kind":"pith_short_12","alias_value":"AZLID2XNSL6L","created_at":"2026-07-05T00:38:02Z"},{"alias_kind":"pith_short_16","alias_value":"AZLID2XNSL6LXM2O","created_at":"2026-07-05T00:38:02Z"},{"alias_kind":"pith_short_8","alias_value":"AZLID2XN","created_at":"2026-07-05T00:38:02Z"}],"graph_snapshots":[{"event_id":"sha256:a7a2f9f43cb4e8330bcf2d552d01f5eb898d16a1724f55570c908ca2d66cc6f6","target":"graph","created_at":"2026-07-05T00:38:02Z","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/1906.01623/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We study the spin alignment of galaxies and halos with respect to filaments and walls of the cosmic web, identified with DisPerSE, using the SIMBA simulation from z=0-2. Massive halos' spins are oriented perpendicularly to their closest filament's axis and walls, while low mass halos tend to have their spins parallel to filaments and in the plane of walls. A similar mass-dependent spin flip is found for galaxies, albeit with a weaker signal particularly at low mass and low-z, suggesting that galaxies' spins retain memory of their larger-scale environment. Low-z star-forming and rotation-domina","authors_text":"Christophe Pichon, Katarina Kraljic, Romeel Dave","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-06-04T17:56:57Z","title":"And yet it flips: connecting galactic spin and the cosmic web"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1906.01623","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:d036ee9f64e5c31e15a2fe0241e39154e18ea754acb3753e6d6d2573fcabc27c","target":"record","created_at":"2026-07-05T00:38:02Z","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":"1dfd2ed63eb16cf33a64653af5cd799f6bad5d0c8bae01b892973275e6184a9f","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-06-04T17:56:57Z","title_canon_sha256":"b21e343099a1021c1b3a367ec60d92e950639f0d9264d181b241cd3d0b6080de"},"schema_version":"1.0","source":{"id":"1906.01623","kind":"arxiv","version":1}},"canonical_sha256":"065681eaed92fcbbb34e145b84c26425cc0b60a1f06a48f0a00d1dbcc8a58dc5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"065681eaed92fcbbb34e145b84c26425cc0b60a1f06a48f0a00d1dbcc8a58dc5","first_computed_at":"2026-07-05T00:38:02.226012Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:38:02.226012Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"eiWc5zyL9RLclG3odW+F50YeyogXnZQT7oRrLwy9fkH0kzGtvm6KrR1oy4zRlSqmnaBM3U7bwZjtC3MjLqQHCQ==","signature_status":"signed_v1","signed_at":"2026-07-05T00:38:02.226442Z","signed_message":"canonical_sha256_bytes"},"source_id":"1906.01623","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d036ee9f64e5c31e15a2fe0241e39154e18ea754acb3753e6d6d2573fcabc27c","sha256:a7a2f9f43cb4e8330bcf2d552d01f5eb898d16a1724f55570c908ca2d66cc6f6"],"state_sha256":"244cc1428be02171fccce5949854964bd0f7e7693fea3d83d73a22102fb29881"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BVTlNQmCSiryYX2QE2NpQio9XRzP0mxYQYhBG5EO36I+9Mnz8gUMqvgS+ykHABqiVugRL4PDcgCcUPRzuyi3AA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T02:12:17.747190Z","bundle_sha256":"b6df350f335e21a23377557624985c3e1bba40255ec883cffa3ffbdca7363f28"}}