{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:BCFCCVAYQ6TSCGNADUPBCF6TBD","short_pith_number":"pith:BCFCCVAY","canonical_record":{"source":{"id":"2007.04048","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-07-08T11:48:05Z","cross_cats_sorted":[],"title_canon_sha256":"aec2d43782fbfe48c2f92e84cea5e0314c4881e92c206eb35c7fca8bffb7dda3","abstract_canon_sha256":"2eaa5f0a7b700b10b21d74c7f796eeeabec928eac5dc66773ac4aebcaf3a35f5"},"schema_version":"1.0"},"canonical_sha256":"088a21541887a72119a01d1e1117d308ce4f87e0e473b2de324ccfa45e10bad2","source":{"kind":"arxiv","id":"2007.04048","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2007.04048","created_at":"2026-07-05T01:46:58Z"},{"alias_kind":"arxiv_version","alias_value":"2007.04048v1","created_at":"2026-07-05T01:46:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2007.04048","created_at":"2026-07-05T01:46:58Z"},{"alias_kind":"pith_short_12","alias_value":"BCFCCVAYQ6TS","created_at":"2026-07-05T01:46:58Z"},{"alias_kind":"pith_short_16","alias_value":"BCFCCVAYQ6TSCGNA","created_at":"2026-07-05T01:46:58Z"},{"alias_kind":"pith_short_8","alias_value":"BCFCCVAY","created_at":"2026-07-05T01:46:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:BCFCCVAYQ6TSCGNADUPBCF6TBD","target":"record","payload":{"canonical_record":{"source":{"id":"2007.04048","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-07-08T11:48:05Z","cross_cats_sorted":[],"title_canon_sha256":"aec2d43782fbfe48c2f92e84cea5e0314c4881e92c206eb35c7fca8bffb7dda3","abstract_canon_sha256":"2eaa5f0a7b700b10b21d74c7f796eeeabec928eac5dc66773ac4aebcaf3a35f5"},"schema_version":"1.0"},"canonical_sha256":"088a21541887a72119a01d1e1117d308ce4f87e0e473b2de324ccfa45e10bad2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:46:58.974798Z","signature_b64":"xBfL87AaouhQtoFRRa9D/yBLgmZM4ULKF3YzO5LERKih9uz5J7PgxL+5GPvrEzhc450bl006K5SxH3vqWxKZAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"088a21541887a72119a01d1e1117d308ce4f87e0e473b2de324ccfa45e10bad2","last_reissued_at":"2026-07-05T01:46:58.971940Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:46:58.971940Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2007.04048","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":"2026-07-05T01:46:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"J+RXG1++oxsVCdsdIWMVElcKcprQZjZ6VI4CKzqtS1P/q2Kw6YM15NXH5fqTf4RdCfuTZ45EDD8gLS1l3HptCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T10:26:23.268527Z"},"content_sha256":"bbb57285de0e83fc89c5b11fb1ac6059fb587a6a093e57ae8c71669fa620587d","schema_version":"1.0","event_id":"sha256:bbb57285de0e83fc89c5b11fb1ac6059fb587a6a093e57ae8c71669fa620587d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:BCFCCVAYQ6TSCGNADUPBCF6TBD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Dust coagulation feedback on magnetohydrodynamic resistivities in protostellar collapse","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"A. Marcowith, B. Commer\\c{c}on, G. Pineau des For\\^ets, P. Hennebelle, P. Marchand, V. Guillet","submitted_at":"2020-07-08T11:48:05Z","abstract_excerpt":"The degree of coupling between the gas and the magnetic field during the collapse of a core and the subsequent formation of a disk depends on the assumed dust size distribution. We study the impact of grain-grain coagulation on the evolution of magnetohydrodynamic (MHD) resistivities during the collapse of a prestellar core. We use a 1-D model to follow the evolution of the dust size distribution, out-of-equilibrium ionization state and gas chemistry during the collapse of a prestellar core. To compute the grain-grain collisional rate, we consider models for both random and systematic, size-de"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2007.04048","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/2007.04048/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":"2026-07-05T01:46:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rVTLI7fRt5izn3oywHb4RTQ0F/bXwpfiHYMVoCGgoZPW5JYdpwW8paJQyyYJlUPZGWmRct8JnnLTw4mqS3CfBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T10:26:23.269058Z"},"content_sha256":"7bd906c8d50b76323c925d8c5b44bad4b04275baf9be118dc9db27f43cf50dfa","schema_version":"1.0","event_id":"sha256:7bd906c8d50b76323c925d8c5b44bad4b04275baf9be118dc9db27f43cf50dfa"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BCFCCVAYQ6TSCGNADUPBCF6TBD/bundle.json","state_url":"https://pith.science/pith/BCFCCVAYQ6TSCGNADUPBCF6TBD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BCFCCVAYQ6TSCGNADUPBCF6TBD/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":"2026-08-05T10:26:23Z","links":{"resolver":"https://pith.science/pith/BCFCCVAYQ6TSCGNADUPBCF6TBD","bundle":"https://pith.science/pith/BCFCCVAYQ6TSCGNADUPBCF6TBD/bundle.json","state":"https://pith.science/pith/BCFCCVAYQ6TSCGNADUPBCF6TBD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BCFCCVAYQ6TSCGNADUPBCF6TBD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:BCFCCVAYQ6TSCGNADUPBCF6TBD","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":"2eaa5f0a7b700b10b21d74c7f796eeeabec928eac5dc66773ac4aebcaf3a35f5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-07-08T11:48:05Z","title_canon_sha256":"aec2d43782fbfe48c2f92e84cea5e0314c4881e92c206eb35c7fca8bffb7dda3"},"schema_version":"1.0","source":{"id":"2007.04048","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2007.04048","created_at":"2026-07-05T01:46:58Z"},{"alias_kind":"arxiv_version","alias_value":"2007.04048v1","created_at":"2026-07-05T01:46:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2007.04048","created_at":"2026-07-05T01:46:58Z"},{"alias_kind":"pith_short_12","alias_value":"BCFCCVAYQ6TS","created_at":"2026-07-05T01:46:58Z"},{"alias_kind":"pith_short_16","alias_value":"BCFCCVAYQ6TSCGNA","created_at":"2026-07-05T01:46:58Z"},{"alias_kind":"pith_short_8","alias_value":"BCFCCVAY","created_at":"2026-07-05T01:46:58Z"}],"graph_snapshots":[{"event_id":"sha256:7bd906c8d50b76323c925d8c5b44bad4b04275baf9be118dc9db27f43cf50dfa","target":"graph","created_at":"2026-07-05T01:46:58Z","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/2007.04048/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The degree of coupling between the gas and the magnetic field during the collapse of a core and the subsequent formation of a disk depends on the assumed dust size distribution. We study the impact of grain-grain coagulation on the evolution of magnetohydrodynamic (MHD) resistivities during the collapse of a prestellar core. We use a 1-D model to follow the evolution of the dust size distribution, out-of-equilibrium ionization state and gas chemistry during the collapse of a prestellar core. To compute the grain-grain collisional rate, we consider models for both random and systematic, size-de","authors_text":"A. Marcowith, B. Commer\\c{c}on, G. Pineau des For\\^ets, P. Hennebelle, P. Marchand, V. Guillet","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-07-08T11:48:05Z","title":"Dust coagulation feedback on magnetohydrodynamic resistivities in protostellar collapse"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2007.04048","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:bbb57285de0e83fc89c5b11fb1ac6059fb587a6a093e57ae8c71669fa620587d","target":"record","created_at":"2026-07-05T01:46:58Z","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":"2eaa5f0a7b700b10b21d74c7f796eeeabec928eac5dc66773ac4aebcaf3a35f5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-07-08T11:48:05Z","title_canon_sha256":"aec2d43782fbfe48c2f92e84cea5e0314c4881e92c206eb35c7fca8bffb7dda3"},"schema_version":"1.0","source":{"id":"2007.04048","kind":"arxiv","version":1}},"canonical_sha256":"088a21541887a72119a01d1e1117d308ce4f87e0e473b2de324ccfa45e10bad2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"088a21541887a72119a01d1e1117d308ce4f87e0e473b2de324ccfa45e10bad2","first_computed_at":"2026-07-05T01:46:58.971940Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:46:58.971940Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"xBfL87AaouhQtoFRRa9D/yBLgmZM4ULKF3YzO5LERKih9uz5J7PgxL+5GPvrEzhc450bl006K5SxH3vqWxKZAg==","signature_status":"signed_v1","signed_at":"2026-07-05T01:46:58.974798Z","signed_message":"canonical_sha256_bytes"},"source_id":"2007.04048","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bbb57285de0e83fc89c5b11fb1ac6059fb587a6a093e57ae8c71669fa620587d","sha256:7bd906c8d50b76323c925d8c5b44bad4b04275baf9be118dc9db27f43cf50dfa"],"state_sha256":"27680cc6508a9dd376982114a759aa04d026f8427f7557b2fa2130e1bccdb2c4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MlQteCLJaRhEb9HaYLGzS1jqYgGFjIBiaRPLgUtR5SUYiCFb1d3Id1mI9f7bl21GGPPD6tEzc+XQEl7O4gulBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T10:26:23.273350Z","bundle_sha256":"99892e5dc5651afbee59709f35573f3f37542491389da35882077a99a1904534"}}