{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:672CV47KAEW5GPLF2G2LZSBTFB","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":"2aee408e0cd61d15ea8c506c268f8114e1e019dcdcf6311daab719141d958b35","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-07-10T11:22:47Z","title_canon_sha256":"31d37cd6947f1a3f3451365cd056b23a6d4cd0001ec91f3732c8138c7bf74f41"},"schema_version":"1.0","source":{"id":"1507.02856","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1507.02856","created_at":"2026-05-18T01:32:28Z"},{"alias_kind":"arxiv_version","alias_value":"1507.02856v1","created_at":"2026-05-18T01:32:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1507.02856","created_at":"2026-05-18T01:32:28Z"},{"alias_kind":"pith_short_12","alias_value":"672CV47KAEW5","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_16","alias_value":"672CV47KAEW5GPLF","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_8","alias_value":"672CV47K","created_at":"2026-05-18T12:29:07Z"}],"graph_snapshots":[{"event_id":"sha256:19f87f6176abfdcdc046498c1a7bd22377bdcd6fc039b12f42eb92c82aebb98b","target":"graph","created_at":"2026-05-18T01:32:28Z","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":"Aims. We aim to develop a chemical model that contains a consistent description of spin-state chemistry in reactions involving chemical species with multiple deuterons. We apply the model to the specific case of deuterated ammonia, to derive values for the various spin-state ratios.\n  Methods. We apply symmetry rules in the complete scrambling assumption to calculate branching ratio tables for reactions between chemical species that include multiple protons and/or deuterons. Reaction sets for both gas-phase and grain-surface chemistry are generated using an automated routine that forms all pos","authors_text":"J. Harju, O. Sipil\\\"a, P. Caselli, S. Schlemmer","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-07-10T11:22:47Z","title":"Spin-state chemistry of deuterated ammonia"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1507.02856","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":"sha256:5454fc67b52412f417c89b899ea656bb4cdf4323ffafc386443e645341040c09","target":"record","created_at":"2026-05-18T01:32:28Z","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":"2aee408e0cd61d15ea8c506c268f8114e1e019dcdcf6311daab719141d958b35","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-07-10T11:22:47Z","title_canon_sha256":"31d37cd6947f1a3f3451365cd056b23a6d4cd0001ec91f3732c8138c7bf74f41"},"schema_version":"1.0","source":{"id":"1507.02856","kind":"arxiv","version":1}},"canonical_sha256":"f7f42af3ea012dd33d65d1b4bcc833286088c2092e863bd70f1a3ff9e652a75e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f7f42af3ea012dd33d65d1b4bcc833286088c2092e863bd70f1a3ff9e652a75e","first_computed_at":"2026-05-18T01:32:28.799624Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:32:28.799624Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"17kFjhvRPOVjRSHTvCdJDYP6Yy/gIx4+zuhLZ4L9VrteyON99Wr/ymR+ZvRWE8XnHT9uH3g1UakqOglX5SlNAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:32:28.800041Z","signed_message":"canonical_sha256_bytes"},"source_id":"1507.02856","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5454fc67b52412f417c89b899ea656bb4cdf4323ffafc386443e645341040c09","sha256:19f87f6176abfdcdc046498c1a7bd22377bdcd6fc039b12f42eb92c82aebb98b"],"state_sha256":"11c1fb900da352e807a31db0183f00bef3909ce67fb5178e6821f901872f9317"}