{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:CXLEGQBEBRLQA6OQWZWFLSGCYU","short_pith_number":"pith:CXLEGQBE","canonical_record":{"source":{"id":"1604.05613","kind":"arxiv","version":6},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-04-19T15:07:57Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"5cf5e6781843a72f9f2d613813bb0a1b9124d17b851c368e8b1745e90483db04","abstract_canon_sha256":"e5dc8df75f630baf7c351fc82ac6fff913253ac6b2d3eddf9ba8440cf63515d2"},"schema_version":"1.0"},"canonical_sha256":"15d64340240c570079d0b66c55c8c2c500ad547c04cf64037be3804345f5b299","source":{"kind":"arxiv","id":"1604.05613","version":6},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1604.05613","created_at":"2026-05-18T01:11:31Z"},{"alias_kind":"arxiv_version","alias_value":"1604.05613v6","created_at":"2026-05-18T01:11:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1604.05613","created_at":"2026-05-18T01:11:31Z"},{"alias_kind":"pith_short_12","alias_value":"CXLEGQBEBRLQ","created_at":"2026-05-18T12:30:09Z"},{"alias_kind":"pith_short_16","alias_value":"CXLEGQBEBRLQA6OQ","created_at":"2026-05-18T12:30:09Z"},{"alias_kind":"pith_short_8","alias_value":"CXLEGQBE","created_at":"2026-05-18T12:30:09Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:CXLEGQBEBRLQA6OQWZWFLSGCYU","target":"record","payload":{"canonical_record":{"source":{"id":"1604.05613","kind":"arxiv","version":6},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-04-19T15:07:57Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"5cf5e6781843a72f9f2d613813bb0a1b9124d17b851c368e8b1745e90483db04","abstract_canon_sha256":"e5dc8df75f630baf7c351fc82ac6fff913253ac6b2d3eddf9ba8440cf63515d2"},"schema_version":"1.0"},"canonical_sha256":"15d64340240c570079d0b66c55c8c2c500ad547c04cf64037be3804345f5b299","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:11:31.024754Z","signature_b64":"yNtgA8B2PdaepfJ7z0UZRA54nhFnqzjrXTClPKKnPDnP6YJguHGHUValKfluqNFLBk28txjOruSq65rOx4HaAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"15d64340240c570079d0b66c55c8c2c500ad547c04cf64037be3804345f5b299","last_reissued_at":"2026-05-18T01:11:31.024355Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:11:31.024355Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1604.05613","source_version":6,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:11:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sdyFl8wCPbtvjnYA+YLoecSRoo0WYVNfW4uatp+Gm3fwWLNqcJT4lZVOVRJL/SEUg8KexnN5wRVtNtrc8hR7CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T17:14:42.379366Z"},"content_sha256":"2c66f5e245c233ab50c9ddf935f2a3c61feff14a360fc3996d32087ef33e62b1","schema_version":"1.0","event_id":"sha256:2c66f5e245c233ab50c9ddf935f2a3c61feff14a360fc3996d32087ef33e62b1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:CXLEGQBEBRLQA6OQWZWFLSGCYU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A chemical solver to compute molecule and grain abundances and non-ideal MHD resistivities in prestellar core collapse calculations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.GA","authors_text":"Benoit Commer\\c{c}on, Gilles Chabrier, Jacques Masson, Neil Vaytet, Patrick Hennebelle, Pierre Marchand","submitted_at":"2016-04-19T15:07:57Z","abstract_excerpt":"We develop a detailed chemical network relevant to the conditions characteristic of prestellar core collapse. We solve the system of time-dependent differential equations to calculate the equilibrium abundances of molecules and dust grains, with a size distribution given by size-bins for these latter. These abundances are used to compute the different non-ideal magneto-hydrodynamics resistivities (ambipolar, Ohmic and Hall), needed to carry out simulations of protostellar collapse. For the first time in this context, we take into account the evaporation of the grains, the thermal ionisation of"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1604.05613","kind":"arxiv","version":6},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"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":"2026-05-18T01:11:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SW4KCeudhk24r6kz/L1JkJy77IHhEFqJG6DWWM3Wo/R+fJnYRtZJ08whg/wxZtzLU2VzTHFh4TJipbjf6UjvCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T17:14:42.379710Z"},"content_sha256":"be0c65687dcd298407118a070aec7c732b422c2658a5ab2c9da202182d460c46","schema_version":"1.0","event_id":"sha256:be0c65687dcd298407118a070aec7c732b422c2658a5ab2c9da202182d460c46"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CXLEGQBEBRLQA6OQWZWFLSGCYU/bundle.json","state_url":"https://pith.science/pith/CXLEGQBEBRLQA6OQWZWFLSGCYU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CXLEGQBEBRLQA6OQWZWFLSGCYU/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":"2026-06-01T17:14:42Z","links":{"resolver":"https://pith.science/pith/CXLEGQBEBRLQA6OQWZWFLSGCYU","bundle":"https://pith.science/pith/CXLEGQBEBRLQA6OQWZWFLSGCYU/bundle.json","state":"https://pith.science/pith/CXLEGQBEBRLQA6OQWZWFLSGCYU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CXLEGQBEBRLQA6OQWZWFLSGCYU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:CXLEGQBEBRLQA6OQWZWFLSGCYU","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":"e5dc8df75f630baf7c351fc82ac6fff913253ac6b2d3eddf9ba8440cf63515d2","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-04-19T15:07:57Z","title_canon_sha256":"5cf5e6781843a72f9f2d613813bb0a1b9124d17b851c368e8b1745e90483db04"},"schema_version":"1.0","source":{"id":"1604.05613","kind":"arxiv","version":6}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1604.05613","created_at":"2026-05-18T01:11:31Z"},{"alias_kind":"arxiv_version","alias_value":"1604.05613v6","created_at":"2026-05-18T01:11:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1604.05613","created_at":"2026-05-18T01:11:31Z"},{"alias_kind":"pith_short_12","alias_value":"CXLEGQBEBRLQ","created_at":"2026-05-18T12:30:09Z"},{"alias_kind":"pith_short_16","alias_value":"CXLEGQBEBRLQA6OQ","created_at":"2026-05-18T12:30:09Z"},{"alias_kind":"pith_short_8","alias_value":"CXLEGQBE","created_at":"2026-05-18T12:30:09Z"}],"graph_snapshots":[{"event_id":"sha256:be0c65687dcd298407118a070aec7c732b422c2658a5ab2c9da202182d460c46","target":"graph","created_at":"2026-05-18T01:11:31Z","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"},"paper":{"abstract_excerpt":"We develop a detailed chemical network relevant to the conditions characteristic of prestellar core collapse. We solve the system of time-dependent differential equations to calculate the equilibrium abundances of molecules and dust grains, with a size distribution given by size-bins for these latter. These abundances are used to compute the different non-ideal magneto-hydrodynamics resistivities (ambipolar, Ohmic and Hall), needed to carry out simulations of protostellar collapse. For the first time in this context, we take into account the evaporation of the grains, the thermal ionisation of","authors_text":"Benoit Commer\\c{c}on, Gilles Chabrier, Jacques Masson, Neil Vaytet, Patrick Hennebelle, Pierre Marchand","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-04-19T15:07:57Z","title":"A chemical solver to compute molecule and grain abundances and non-ideal MHD resistivities in prestellar core collapse calculations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1604.05613","kind":"arxiv","version":6},"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":"sha256:2c66f5e245c233ab50c9ddf935f2a3c61feff14a360fc3996d32087ef33e62b1","target":"record","created_at":"2026-05-18T01:11:31Z","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":"e5dc8df75f630baf7c351fc82ac6fff913253ac6b2d3eddf9ba8440cf63515d2","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-04-19T15:07:57Z","title_canon_sha256":"5cf5e6781843a72f9f2d613813bb0a1b9124d17b851c368e8b1745e90483db04"},"schema_version":"1.0","source":{"id":"1604.05613","kind":"arxiv","version":6}},"canonical_sha256":"15d64340240c570079d0b66c55c8c2c500ad547c04cf64037be3804345f5b299","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"15d64340240c570079d0b66c55c8c2c500ad547c04cf64037be3804345f5b299","first_computed_at":"2026-05-18T01:11:31.024355Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:11:31.024355Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"yNtgA8B2PdaepfJ7z0UZRA54nhFnqzjrXTClPKKnPDnP6YJguHGHUValKfluqNFLBk28txjOruSq65rOx4HaAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:11:31.024754Z","signed_message":"canonical_sha256_bytes"},"source_id":"1604.05613","source_kind":"arxiv","source_version":6}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2c66f5e245c233ab50c9ddf935f2a3c61feff14a360fc3996d32087ef33e62b1","sha256:be0c65687dcd298407118a070aec7c732b422c2658a5ab2c9da202182d460c46"],"state_sha256":"a1b30d3b7ac247e2f3f6687102dbc02bfb5e778a1eb844a711451b618148322f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Z91faHD73sMPk8D4PpcVKFM61wHS/P36bygnLEovyFa2yyGRqe2LKpTfYA1z5AtwkGJqhXPs/564EJZiRyixBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T17:14:42.381490Z","bundle_sha256":"9107917d1d2327468933994c54135adb31d742a1606fd53010cda4311d2cfb68"}}