{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:TMB3TVU6JDEGTNK37P6T77BAQX","short_pith_number":"pith:TMB3TVU6","canonical_record":{"source":{"id":"2105.09722","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-05-20T13:13:52Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"508f925e7b3e4a9591df31f3b6db4bdb0bc7b6af713ab9bd4af4ac0270e92cd5","abstract_canon_sha256":"43ab6a1838f16cbca1fbf8cb52e3fd9f6368a366a72d7fe8199e5d98b4beb0e1"},"schema_version":"1.0"},"canonical_sha256":"9b03b9d69e48c869b55bfbfd3ffc2085dd86a36eb49463a85f848f9d5916f9a7","source":{"kind":"arxiv","id":"2105.09722","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2105.09722","created_at":"2026-07-05T03:12:38Z"},{"alias_kind":"arxiv_version","alias_value":"2105.09722v2","created_at":"2026-07-05T03:12:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2105.09722","created_at":"2026-07-05T03:12:38Z"},{"alias_kind":"pith_short_12","alias_value":"TMB3TVU6JDEG","created_at":"2026-07-05T03:12:38Z"},{"alias_kind":"pith_short_16","alias_value":"TMB3TVU6JDEGTNK3","created_at":"2026-07-05T03:12:38Z"},{"alias_kind":"pith_short_8","alias_value":"TMB3TVU6","created_at":"2026-07-05T03:12:38Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:TMB3TVU6JDEGTNK37P6T77BAQX","target":"record","payload":{"canonical_record":{"source":{"id":"2105.09722","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-05-20T13:13:52Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"508f925e7b3e4a9591df31f3b6db4bdb0bc7b6af713ab9bd4af4ac0270e92cd5","abstract_canon_sha256":"43ab6a1838f16cbca1fbf8cb52e3fd9f6368a366a72d7fe8199e5d98b4beb0e1"},"schema_version":"1.0"},"canonical_sha256":"9b03b9d69e48c869b55bfbfd3ffc2085dd86a36eb49463a85f848f9d5916f9a7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:12:38.740582Z","signature_b64":"68a1mMgs7rkQ/evgsSaWKe2uCcKkKZnCx+nVoRxWHxTPgu3UVLXHvAmn21q8rFKEPzlcCDJIxgW31IXOgHkAAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9b03b9d69e48c869b55bfbfd3ffc2085dd86a36eb49463a85f848f9d5916f9a7","last_reissued_at":"2026-07-05T03:12:38.740097Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:12:38.740097Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2105.09722","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":"2026-07-05T03:12:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XFb4ZokXW92/HLGCi7Q+6N0V55q6/rrs+H6OtQIAav5neXclB2LZiWtK97uEKXiDIwNOzpR39CvfjOLgiBEjDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T15:04:59.758102Z"},"content_sha256":"72cc1aee32f07e30cc038b437d6473ebc3278112cb0c40befc50f70a32259fc5","schema_version":"1.0","event_id":"sha256:72cc1aee32f07e30cc038b437d6473ebc3278112cb0c40befc50f70a32259fc5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:TMB3TVU6JDEGTNK37P6T77BAQX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Formation of massive disk galaxies in the IllustrisTNG simulation","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"Beijing), Guangquan Zeng, Lan Wang, Liang Gao (NAOC","submitted_at":"2021-05-20T13:13:52Z","abstract_excerpt":"We investigate the formation history of massive disk galaxies in hydro-dynamical simulation--the IllustrisTNG, to study why massive disk galaxies survive through cosmic time. 83 galaxies in the simulation are selected with M$_{*,z=0}$ $>8\\times10^{10}$ M$_\\odot$ and kinematic bulge-to-total ratio less than $0.3$. We find that 8.4 percent of these massive disk galaxies have quiet merger histories and preserve disk morphology since formed. 54.2 percent have a significant increase in bulge components in history, then become disks again till present time. The rest 37.3 percent experience prominent"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2105.09722","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/2105.09722/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":"2026-07-05T03:12:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1J2mUC1Wv1vaHKbBcBYj/sDuCVtRO3okFbx8GLfLr4esNfStlMykQ/vmWscaT+tONE9+LIdTmHrsfOMjLlekAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T15:04:59.758653Z"},"content_sha256":"4601ec79685fb62d847df87ad31a57103458eedb33cf35838d4719a781fb2f56","schema_version":"1.0","event_id":"sha256:4601ec79685fb62d847df87ad31a57103458eedb33cf35838d4719a781fb2f56"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TMB3TVU6JDEGTNK37P6T77BAQX/bundle.json","state_url":"https://pith.science/pith/TMB3TVU6JDEGTNK37P6T77BAQX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TMB3TVU6JDEGTNK37P6T77BAQX/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":"2026-08-06T15:04:59Z","links":{"resolver":"https://pith.science/pith/TMB3TVU6JDEGTNK37P6T77BAQX","bundle":"https://pith.science/pith/TMB3TVU6JDEGTNK37P6T77BAQX/bundle.json","state":"https://pith.science/pith/TMB3TVU6JDEGTNK37P6T77BAQX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TMB3TVU6JDEGTNK37P6T77BAQX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:TMB3TVU6JDEGTNK37P6T77BAQX","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":"43ab6a1838f16cbca1fbf8cb52e3fd9f6368a366a72d7fe8199e5d98b4beb0e1","cross_cats_sorted":["astro-ph.CO"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-05-20T13:13:52Z","title_canon_sha256":"508f925e7b3e4a9591df31f3b6db4bdb0bc7b6af713ab9bd4af4ac0270e92cd5"},"schema_version":"1.0","source":{"id":"2105.09722","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2105.09722","created_at":"2026-07-05T03:12:38Z"},{"alias_kind":"arxiv_version","alias_value":"2105.09722v2","created_at":"2026-07-05T03:12:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2105.09722","created_at":"2026-07-05T03:12:38Z"},{"alias_kind":"pith_short_12","alias_value":"TMB3TVU6JDEG","created_at":"2026-07-05T03:12:38Z"},{"alias_kind":"pith_short_16","alias_value":"TMB3TVU6JDEGTNK3","created_at":"2026-07-05T03:12:38Z"},{"alias_kind":"pith_short_8","alias_value":"TMB3TVU6","created_at":"2026-07-05T03:12:38Z"}],"graph_snapshots":[{"event_id":"sha256:4601ec79685fb62d847df87ad31a57103458eedb33cf35838d4719a781fb2f56","target":"graph","created_at":"2026-07-05T03:12:38Z","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/2105.09722/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We investigate the formation history of massive disk galaxies in hydro-dynamical simulation--the IllustrisTNG, to study why massive disk galaxies survive through cosmic time. 83 galaxies in the simulation are selected with M$_{*,z=0}$ $>8\\times10^{10}$ M$_\\odot$ and kinematic bulge-to-total ratio less than $0.3$. We find that 8.4 percent of these massive disk galaxies have quiet merger histories and preserve disk morphology since formed. 54.2 percent have a significant increase in bulge components in history, then become disks again till present time. The rest 37.3 percent experience prominent","authors_text":"Beijing), Guangquan Zeng, Lan Wang, Liang Gao (NAOC","cross_cats":["astro-ph.CO"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-05-20T13:13:52Z","title":"Formation of massive disk galaxies in the IllustrisTNG simulation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2105.09722","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":"sha256:72cc1aee32f07e30cc038b437d6473ebc3278112cb0c40befc50f70a32259fc5","target":"record","created_at":"2026-07-05T03:12:38Z","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":"43ab6a1838f16cbca1fbf8cb52e3fd9f6368a366a72d7fe8199e5d98b4beb0e1","cross_cats_sorted":["astro-ph.CO"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-05-20T13:13:52Z","title_canon_sha256":"508f925e7b3e4a9591df31f3b6db4bdb0bc7b6af713ab9bd4af4ac0270e92cd5"},"schema_version":"1.0","source":{"id":"2105.09722","kind":"arxiv","version":2}},"canonical_sha256":"9b03b9d69e48c869b55bfbfd3ffc2085dd86a36eb49463a85f848f9d5916f9a7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9b03b9d69e48c869b55bfbfd3ffc2085dd86a36eb49463a85f848f9d5916f9a7","first_computed_at":"2026-07-05T03:12:38.740097Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:12:38.740097Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"68a1mMgs7rkQ/evgsSaWKe2uCcKkKZnCx+nVoRxWHxTPgu3UVLXHvAmn21q8rFKEPzlcCDJIxgW31IXOgHkAAw==","signature_status":"signed_v1","signed_at":"2026-07-05T03:12:38.740582Z","signed_message":"canonical_sha256_bytes"},"source_id":"2105.09722","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:72cc1aee32f07e30cc038b437d6473ebc3278112cb0c40befc50f70a32259fc5","sha256:4601ec79685fb62d847df87ad31a57103458eedb33cf35838d4719a781fb2f56"],"state_sha256":"99d596cde2cae9c43c924df385aebca7488ef5a0d5bcaffde452a8fc715a47b7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YY6B2qRGDJ+yUzLnLQcijvZf7qCq2onRtwyyMQHdSqmzNQMeaRrYPpA2rmyiw3zvkua+Lif5diMXhnZ4yLiADw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T15:04:59.762287Z","bundle_sha256":"c65d2b70df2ef1fdba4eee444b7f9143f00bf5a34bbff3cbc97a85f7ad1b3378"}}