{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:ACDT6MBDW5FH4CD5KY6WHIZOLS","short_pith_number":"pith:ACDT6MBD","canonical_record":{"source":{"id":"1401.4719","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-01-19T19:03:20Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"1413f7e535b6c426303e8fbe7135621dd858519f099eee1d328fa68b0bb531ee","abstract_canon_sha256":"e2786b157499ca24d75d385fc9071099fdf2582541a2a357341036b114d6651f"},"schema_version":"1.0"},"canonical_sha256":"00873f3023b74a7e087d563d63a32e5c82f2be7ac40022f4d6506b92eeb1842e","source":{"kind":"arxiv","id":"1401.4719","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1401.4719","created_at":"2026-05-18T01:45:19Z"},{"alias_kind":"arxiv_version","alias_value":"1401.4719v3","created_at":"2026-05-18T01:45:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1401.4719","created_at":"2026-05-18T01:45:19Z"},{"alias_kind":"pith_short_12","alias_value":"ACDT6MBDW5FH","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_16","alias_value":"ACDT6MBDW5FH4CD5","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_8","alias_value":"ACDT6MBD","created_at":"2026-05-18T12:28:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:ACDT6MBDW5FH4CD5KY6WHIZOLS","target":"record","payload":{"canonical_record":{"source":{"id":"1401.4719","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-01-19T19:03:20Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"1413f7e535b6c426303e8fbe7135621dd858519f099eee1d328fa68b0bb531ee","abstract_canon_sha256":"e2786b157499ca24d75d385fc9071099fdf2582541a2a357341036b114d6651f"},"schema_version":"1.0"},"canonical_sha256":"00873f3023b74a7e087d563d63a32e5c82f2be7ac40022f4d6506b92eeb1842e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:45:19.207489Z","signature_b64":"5ZAzfByVoURLWDq8qaqAuWfnZ/aWDwoZ1mTMs0jGhWh3KYbf/jBojhvaWhUITBNhU1OWOyQKr+fXnRLTRu2HAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"00873f3023b74a7e087d563d63a32e5c82f2be7ac40022f4d6506b92eeb1842e","last_reissued_at":"2026-05-18T01:45:19.206817Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:45:19.206817Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1401.4719","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:45:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iqiqC4ZPwBw0yABjWHUYacDhuEysGqr5kpsc/I/n1u2Wnaav35JKgubZMnxuNxbS2GKYvNBYtHWCRahVnmFNBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T15:38:11.811570Z"},"content_sha256":"c8fe102163b6ab40c6db547946d9cf6aa05a67e66f594ead3c742cb30fa0bed6","schema_version":"1.0","event_id":"sha256:c8fe102163b6ab40c6db547946d9cf6aa05a67e66f594ead3c742cb30fa0bed6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:ACDT6MBDW5FH4CD5KY6WHIZOLS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Non-equilibrium chemistry and cooling in the diffuse interstellar medium - I. Optically thin regime","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"Alexander J. Richings, Benjamin D. Oppenheimer, Joop Schaye","submitted_at":"2014-01-19T19:03:20Z","abstract_excerpt":"An accurate treatment of the multiphase interstellar medium (ISM) in hydrodynamic galaxy simulations requires that we follow not only the thermal evolution of the gas, but also the evolution of its chemical state, including its molecular chemistry, without assuming chemical (including ionisation) equilibrium. We present a reaction network that can be used to solve for this thermo-chemical evolution. Our model follows the evolution of all ionisation states of the 11 elements that dominate the cooling rate, along with important molecules such as H2 and CO, and the intermediate molecular species "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1401.4719","kind":"arxiv","version":3},"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":"2026-05-18T01:45:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gAKExzI4JJRESKPUYaa2DD8G/8Kyoo5FNC2iJKM+kXhq3P6tRIE2wGAW0QVAzydGeKbIIVZtTxeaPEWOy0TLDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T15:38:11.811917Z"},"content_sha256":"58ab0788ec7172fb9f972011935ce6efd47be5c686be047b433184c912027809","schema_version":"1.0","event_id":"sha256:58ab0788ec7172fb9f972011935ce6efd47be5c686be047b433184c912027809"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ACDT6MBDW5FH4CD5KY6WHIZOLS/bundle.json","state_url":"https://pith.science/pith/ACDT6MBDW5FH4CD5KY6WHIZOLS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ACDT6MBDW5FH4CD5KY6WHIZOLS/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":"2026-06-02T15:38:11Z","links":{"resolver":"https://pith.science/pith/ACDT6MBDW5FH4CD5KY6WHIZOLS","bundle":"https://pith.science/pith/ACDT6MBDW5FH4CD5KY6WHIZOLS/bundle.json","state":"https://pith.science/pith/ACDT6MBDW5FH4CD5KY6WHIZOLS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ACDT6MBDW5FH4CD5KY6WHIZOLS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:ACDT6MBDW5FH4CD5KY6WHIZOLS","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":"e2786b157499ca24d75d385fc9071099fdf2582541a2a357341036b114d6651f","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-01-19T19:03:20Z","title_canon_sha256":"1413f7e535b6c426303e8fbe7135621dd858519f099eee1d328fa68b0bb531ee"},"schema_version":"1.0","source":{"id":"1401.4719","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1401.4719","created_at":"2026-05-18T01:45:19Z"},{"alias_kind":"arxiv_version","alias_value":"1401.4719v3","created_at":"2026-05-18T01:45:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1401.4719","created_at":"2026-05-18T01:45:19Z"},{"alias_kind":"pith_short_12","alias_value":"ACDT6MBDW5FH","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_16","alias_value":"ACDT6MBDW5FH4CD5","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_8","alias_value":"ACDT6MBD","created_at":"2026-05-18T12:28:19Z"}],"graph_snapshots":[{"event_id":"sha256:58ab0788ec7172fb9f972011935ce6efd47be5c686be047b433184c912027809","target":"graph","created_at":"2026-05-18T01:45:19Z","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":"An accurate treatment of the multiphase interstellar medium (ISM) in hydrodynamic galaxy simulations requires that we follow not only the thermal evolution of the gas, but also the evolution of its chemical state, including its molecular chemistry, without assuming chemical (including ionisation) equilibrium. We present a reaction network that can be used to solve for this thermo-chemical evolution. Our model follows the evolution of all ionisation states of the 11 elements that dominate the cooling rate, along with important molecules such as H2 and CO, and the intermediate molecular species ","authors_text":"Alexander J. Richings, Benjamin D. Oppenheimer, Joop Schaye","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-01-19T19:03:20Z","title":"Non-equilibrium chemistry and cooling in the diffuse interstellar medium - I. Optically thin regime"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1401.4719","kind":"arxiv","version":3},"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:c8fe102163b6ab40c6db547946d9cf6aa05a67e66f594ead3c742cb30fa0bed6","target":"record","created_at":"2026-05-18T01:45:19Z","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":"e2786b157499ca24d75d385fc9071099fdf2582541a2a357341036b114d6651f","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-01-19T19:03:20Z","title_canon_sha256":"1413f7e535b6c426303e8fbe7135621dd858519f099eee1d328fa68b0bb531ee"},"schema_version":"1.0","source":{"id":"1401.4719","kind":"arxiv","version":3}},"canonical_sha256":"00873f3023b74a7e087d563d63a32e5c82f2be7ac40022f4d6506b92eeb1842e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"00873f3023b74a7e087d563d63a32e5c82f2be7ac40022f4d6506b92eeb1842e","first_computed_at":"2026-05-18T01:45:19.206817Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:45:19.206817Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"5ZAzfByVoURLWDq8qaqAuWfnZ/aWDwoZ1mTMs0jGhWh3KYbf/jBojhvaWhUITBNhU1OWOyQKr+fXnRLTRu2HAA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:45:19.207489Z","signed_message":"canonical_sha256_bytes"},"source_id":"1401.4719","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c8fe102163b6ab40c6db547946d9cf6aa05a67e66f594ead3c742cb30fa0bed6","sha256:58ab0788ec7172fb9f972011935ce6efd47be5c686be047b433184c912027809"],"state_sha256":"e9e020f7bbecec1c9e45894f52c94f7d03dcf55e4f4d997f154dc5ce232a3b87"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"szcie8Eysa7WQo8CROJFRDP+gaJ+96jg/3LyTzq3Qsh5kx1y+9+qkAbl7Fru+ZSOKkqgiDKhKGoaQHfDsiNfAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T15:38:11.814025Z","bundle_sha256":"7e0ad25f9c38d57da1fe2abb2f115727990f67bdbbcfde56d5953faa07afdf7c"}}