{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:MCA6Q5WSBMNDO4KBGLFT2A5GPF","short_pith_number":"pith:MCA6Q5WS","canonical_record":{"source":{"id":"1211.3025","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-11-13T15:45:45Z","cross_cats_sorted":[],"title_canon_sha256":"0b7acb34fd1cae1c0b2fe3dcffa6aef72de43c4baafe263e0a8d46f9048125f9","abstract_canon_sha256":"afdab8f87e89f3dc997fea5d21472d5b8937135c11d7340a5f3028aa31801050"},"schema_version":"1.0"},"canonical_sha256":"6081e876d20b1a37714132cb3d03a6796c3e6b357730c2ea1aafc147a39450b9","source":{"kind":"arxiv","id":"1211.3025","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1211.3025","created_at":"2026-05-18T01:53:16Z"},{"alias_kind":"arxiv_version","alias_value":"1211.3025v2","created_at":"2026-05-18T01:53:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1211.3025","created_at":"2026-05-18T01:53:16Z"},{"alias_kind":"pith_short_12","alias_value":"MCA6Q5WSBMND","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_16","alias_value":"MCA6Q5WSBMNDO4KB","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_8","alias_value":"MCA6Q5WS","created_at":"2026-05-18T12:27:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:MCA6Q5WSBMNDO4KBGLFT2A5GPF","target":"record","payload":{"canonical_record":{"source":{"id":"1211.3025","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-11-13T15:45:45Z","cross_cats_sorted":[],"title_canon_sha256":"0b7acb34fd1cae1c0b2fe3dcffa6aef72de43c4baafe263e0a8d46f9048125f9","abstract_canon_sha256":"afdab8f87e89f3dc997fea5d21472d5b8937135c11d7340a5f3028aa31801050"},"schema_version":"1.0"},"canonical_sha256":"6081e876d20b1a37714132cb3d03a6796c3e6b357730c2ea1aafc147a39450b9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:53:16.188521Z","signature_b64":"MwkzQSbiDDkRQ259hugyos+u9APJYCd43K6Nq03hWuL1NZKMRevVi/ygAHDXlnmChBpd97iHYcum+tfDyFpgDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6081e876d20b1a37714132cb3d03a6796c3e6b357730c2ea1aafc147a39450b9","last_reissued_at":"2026-05-18T01:53:16.188109Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:53:16.188109Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1211.3025","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":"2026-05-18T01:53:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iAXaUJ2qZ4Yz/yjmeMHTiXKs3jWg3v34FsPx5KUcFwaf74sQfhB/o5LOcBU1Gii/isZ1F656ZiAhli+vZzXGAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T22:57:52.423282Z"},"content_sha256":"13a79d2d9cffceae1dee8acc22312467dd68fdfa2a8179c44c53b5cf9c3eedd6","schema_version":"1.0","event_id":"sha256:13a79d2d9cffceae1dee8acc22312467dd68fdfa2a8179c44c53b5cf9c3eedd6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:MCA6Q5WSBMNDO4KBGLFT2A5GPF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Unified Monte Carlo Treatment of Gas-Grain Chemistry for Large Reaction Networks. II. A Multiphase Gas-Surface-Layered Bulk Model","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"A.I. Vasyunin, E. Herbst","submitted_at":"2012-11-13T15:45:45Z","abstract_excerpt":"The observed gas-phase molecular inventory of hot cores is believed to be significantly impacted by the products of chemistry in interstellar ices. In this study, we report the construction of a full macroscopic Monte Carlo model of both the gas-phase chemistry and the chemistry occurring in the icy mantles of interstellar grains. Our model treats icy grain mantles in a layer-by-layer manner, which incorporates laboratory data on ice desorption correctly. The ice treatment includes a distinction between a reactive ice surface and an inert bulk. The treatment also distinguishes between zeroth a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1211.3025","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":""},"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":"2026-05-18T01:53:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gL7OuYOulcI1lxdYywwWNejgv3yWuN32A8RB5gJdbmnd7yNbSYyY09PT9NeslShWXSnaZQp70XquywnDUBmyDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T22:57:52.423645Z"},"content_sha256":"c9d4e2249962822ed2e700e131786df12c3b2cd282a7d9c4da2a278ab58b95c4","schema_version":"1.0","event_id":"sha256:c9d4e2249962822ed2e700e131786df12c3b2cd282a7d9c4da2a278ab58b95c4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MCA6Q5WSBMNDO4KBGLFT2A5GPF/bundle.json","state_url":"https://pith.science/pith/MCA6Q5WSBMNDO4KBGLFT2A5GPF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MCA6Q5WSBMNDO4KBGLFT2A5GPF/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":"2026-06-02T22:57:52Z","links":{"resolver":"https://pith.science/pith/MCA6Q5WSBMNDO4KBGLFT2A5GPF","bundle":"https://pith.science/pith/MCA6Q5WSBMNDO4KBGLFT2A5GPF/bundle.json","state":"https://pith.science/pith/MCA6Q5WSBMNDO4KBGLFT2A5GPF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MCA6Q5WSBMNDO4KBGLFT2A5GPF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:MCA6Q5WSBMNDO4KBGLFT2A5GPF","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":"afdab8f87e89f3dc997fea5d21472d5b8937135c11d7340a5f3028aa31801050","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-11-13T15:45:45Z","title_canon_sha256":"0b7acb34fd1cae1c0b2fe3dcffa6aef72de43c4baafe263e0a8d46f9048125f9"},"schema_version":"1.0","source":{"id":"1211.3025","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1211.3025","created_at":"2026-05-18T01:53:16Z"},{"alias_kind":"arxiv_version","alias_value":"1211.3025v2","created_at":"2026-05-18T01:53:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1211.3025","created_at":"2026-05-18T01:53:16Z"},{"alias_kind":"pith_short_12","alias_value":"MCA6Q5WSBMND","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_16","alias_value":"MCA6Q5WSBMNDO4KB","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_8","alias_value":"MCA6Q5WS","created_at":"2026-05-18T12:27:14Z"}],"graph_snapshots":[{"event_id":"sha256:c9d4e2249962822ed2e700e131786df12c3b2cd282a7d9c4da2a278ab58b95c4","target":"graph","created_at":"2026-05-18T01:53:16Z","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":"The observed gas-phase molecular inventory of hot cores is believed to be significantly impacted by the products of chemistry in interstellar ices. In this study, we report the construction of a full macroscopic Monte Carlo model of both the gas-phase chemistry and the chemistry occurring in the icy mantles of interstellar grains. Our model treats icy grain mantles in a layer-by-layer manner, which incorporates laboratory data on ice desorption correctly. The ice treatment includes a distinction between a reactive ice surface and an inert bulk. The treatment also distinguishes between zeroth a","authors_text":"A.I. Vasyunin, E. Herbst","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-11-13T15:45:45Z","title":"A Unified Monte Carlo Treatment of Gas-Grain Chemistry for Large Reaction Networks. II. A Multiphase Gas-Surface-Layered Bulk Model"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1211.3025","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":"sha256:13a79d2d9cffceae1dee8acc22312467dd68fdfa2a8179c44c53b5cf9c3eedd6","target":"record","created_at":"2026-05-18T01:53:16Z","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":"afdab8f87e89f3dc997fea5d21472d5b8937135c11d7340a5f3028aa31801050","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-11-13T15:45:45Z","title_canon_sha256":"0b7acb34fd1cae1c0b2fe3dcffa6aef72de43c4baafe263e0a8d46f9048125f9"},"schema_version":"1.0","source":{"id":"1211.3025","kind":"arxiv","version":2}},"canonical_sha256":"6081e876d20b1a37714132cb3d03a6796c3e6b357730c2ea1aafc147a39450b9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6081e876d20b1a37714132cb3d03a6796c3e6b357730c2ea1aafc147a39450b9","first_computed_at":"2026-05-18T01:53:16.188109Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:53:16.188109Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"MwkzQSbiDDkRQ259hugyos+u9APJYCd43K6Nq03hWuL1NZKMRevVi/ygAHDXlnmChBpd97iHYcum+tfDyFpgDg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:53:16.188521Z","signed_message":"canonical_sha256_bytes"},"source_id":"1211.3025","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:13a79d2d9cffceae1dee8acc22312467dd68fdfa2a8179c44c53b5cf9c3eedd6","sha256:c9d4e2249962822ed2e700e131786df12c3b2cd282a7d9c4da2a278ab58b95c4"],"state_sha256":"948a0d0d49a5a5dfbe6559b7ab7acf905175b8985f64eb6974b8e451c192402c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3TcZt1i0IlrKRoKxyYOL8K37dBJD3n4mnQFt+suIyJ2gGwPzVIUgIz4DcIEsFm2M6a97JS20h48kA4T8Hw//Bw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T22:57:52.425553Z","bundle_sha256":"935e1c7554239441fe2af100709922a4659069a596b227a0349ee94bc4dd996b"}}