{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:2QDKW24X3GRUJQLCAU4MZ5WXEM","short_pith_number":"pith:2QDKW24X","canonical_record":{"source":{"id":"2506.04794","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-06-05T09:22:50Z","cross_cats_sorted":[],"title_canon_sha256":"dba1edd30d6ca598019d5b540d15d268e1b18d4ffcef79341d965d5b184e60b5","abstract_canon_sha256":"77f9d53d522c0982b0eb548a93b355cccfa84f645304d82577eafd7349884aff"},"schema_version":"1.0"},"canonical_sha256":"d406ab6b97d9a344c1620538ccf6d72332be0b06b08fd8ebf2bee47ac1a7b323","source":{"kind":"arxiv","id":"2506.04794","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2506.04794","created_at":"2026-07-05T11:16:36Z"},{"alias_kind":"arxiv_version","alias_value":"2506.04794v1","created_at":"2026-07-05T11:16:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2506.04794","created_at":"2026-07-05T11:16:36Z"},{"alias_kind":"pith_short_12","alias_value":"2QDKW24X3GRU","created_at":"2026-07-05T11:16:36Z"},{"alias_kind":"pith_short_16","alias_value":"2QDKW24X3GRUJQLC","created_at":"2026-07-05T11:16:36Z"},{"alias_kind":"pith_short_8","alias_value":"2QDKW24X","created_at":"2026-07-05T11:16:36Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:2QDKW24X3GRUJQLCAU4MZ5WXEM","target":"record","payload":{"canonical_record":{"source":{"id":"2506.04794","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-06-05T09:22:50Z","cross_cats_sorted":[],"title_canon_sha256":"dba1edd30d6ca598019d5b540d15d268e1b18d4ffcef79341d965d5b184e60b5","abstract_canon_sha256":"77f9d53d522c0982b0eb548a93b355cccfa84f645304d82577eafd7349884aff"},"schema_version":"1.0"},"canonical_sha256":"d406ab6b97d9a344c1620538ccf6d72332be0b06b08fd8ebf2bee47ac1a7b323","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:16:36.799977Z","signature_b64":"tAth5Ko73qknEIqOkIdORRSQ82J468oJxyOocRm89c9n7uMPVZxl8DVLeZDWV9Qct31KGtCfkplPBajO2ML9Cg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d406ab6b97d9a344c1620538ccf6d72332be0b06b08fd8ebf2bee47ac1a7b323","last_reissued_at":"2026-07-05T11:16:36.799417Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:16:36.799417Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2506.04794","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":"2026-07-05T11:16:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Rm8MGKlvGib5PAyRFyskPfn9HqBAdDc4EH3IRvQdX5X60iMUDfcN2EEgQxOJYcCfH/mMx5brN/BYEa7+WhhrDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T04:52:14.511007Z"},"content_sha256":"63449577fd122538b0a25da78bf684430b5e6f3aaafd9cf2c6438e0df1fb5aa5","schema_version":"1.0","event_id":"sha256:63449577fd122538b0a25da78bf684430b5e6f3aaafd9cf2c6438e0df1fb5aa5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:2QDKW24X3GRUJQLCAU4MZ5WXEM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Rate constants and product yields for the C + CH3CHO reaction at low temperatures","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Jean-Christophe Loison, Kevin M. Hickson, Valentine Wakelam","submitted_at":"2025-06-05T09:22:50Z","abstract_excerpt":"Reactions involving atomic carbon in its ground electronic state, C(3P), play an important role in astrochemistry due to high C-atom abundance levels. Here we performed a kinetic investigation of the reaction between C(3P) and acetaldehyde, CH3CHO, determining rate constants for this process over the 50-296 K range. Measurements of the formation of atomic hydrogen, H(2S), were also performed to provide insight into product formation. Experiments were conducted using a supersonic flow reactor coupled with pulsed laser photolysis for C-atom generation and pulsed laser induced fluorescence in the"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2506.04794","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/2506.04794/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":"2026-07-05T11:16:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"J9CJ0/ztMxjtdUoX9RFQXAEwHoHqJGVQ9SxnxBujsSLy+9loO6zVaKh5JrsuVLXARmbbqGBRcdlAE4sX3LStBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T04:52:14.511919Z"},"content_sha256":"84747005d5cd01c4f1252e95b7ce1c1c4a7ae0fff740ac81442526ea41e37a77","schema_version":"1.0","event_id":"sha256:84747005d5cd01c4f1252e95b7ce1c1c4a7ae0fff740ac81442526ea41e37a77"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2QDKW24X3GRUJQLCAU4MZ5WXEM/bundle.json","state_url":"https://pith.science/pith/2QDKW24X3GRUJQLCAU4MZ5WXEM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2QDKW24X3GRUJQLCAU4MZ5WXEM/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":"2026-08-11T04:52:14Z","links":{"resolver":"https://pith.science/pith/2QDKW24X3GRUJQLCAU4MZ5WXEM","bundle":"https://pith.science/pith/2QDKW24X3GRUJQLCAU4MZ5WXEM/bundle.json","state":"https://pith.science/pith/2QDKW24X3GRUJQLCAU4MZ5WXEM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2QDKW24X3GRUJQLCAU4MZ5WXEM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:2QDKW24X3GRUJQLCAU4MZ5WXEM","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":"77f9d53d522c0982b0eb548a93b355cccfa84f645304d82577eafd7349884aff","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-06-05T09:22:50Z","title_canon_sha256":"dba1edd30d6ca598019d5b540d15d268e1b18d4ffcef79341d965d5b184e60b5"},"schema_version":"1.0","source":{"id":"2506.04794","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2506.04794","created_at":"2026-07-05T11:16:36Z"},{"alias_kind":"arxiv_version","alias_value":"2506.04794v1","created_at":"2026-07-05T11:16:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2506.04794","created_at":"2026-07-05T11:16:36Z"},{"alias_kind":"pith_short_12","alias_value":"2QDKW24X3GRU","created_at":"2026-07-05T11:16:36Z"},{"alias_kind":"pith_short_16","alias_value":"2QDKW24X3GRUJQLC","created_at":"2026-07-05T11:16:36Z"},{"alias_kind":"pith_short_8","alias_value":"2QDKW24X","created_at":"2026-07-05T11:16:36Z"}],"graph_snapshots":[{"event_id":"sha256:84747005d5cd01c4f1252e95b7ce1c1c4a7ae0fff740ac81442526ea41e37a77","target":"graph","created_at":"2026-07-05T11:16:36Z","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/2506.04794/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Reactions involving atomic carbon in its ground electronic state, C(3P), play an important role in astrochemistry due to high C-atom abundance levels. Here we performed a kinetic investigation of the reaction between C(3P) and acetaldehyde, CH3CHO, determining rate constants for this process over the 50-296 K range. Measurements of the formation of atomic hydrogen, H(2S), were also performed to provide insight into product formation. Experiments were conducted using a supersonic flow reactor coupled with pulsed laser photolysis for C-atom generation and pulsed laser induced fluorescence in the","authors_text":"Jean-Christophe Loison, Kevin M. Hickson, Valentine Wakelam","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-06-05T09:22:50Z","title":"Rate constants and product yields for the C + CH3CHO reaction at low temperatures"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2506.04794","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":"sha256:63449577fd122538b0a25da78bf684430b5e6f3aaafd9cf2c6438e0df1fb5aa5","target":"record","created_at":"2026-07-05T11:16:36Z","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":"77f9d53d522c0982b0eb548a93b355cccfa84f645304d82577eafd7349884aff","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-06-05T09:22:50Z","title_canon_sha256":"dba1edd30d6ca598019d5b540d15d268e1b18d4ffcef79341d965d5b184e60b5"},"schema_version":"1.0","source":{"id":"2506.04794","kind":"arxiv","version":1}},"canonical_sha256":"d406ab6b97d9a344c1620538ccf6d72332be0b06b08fd8ebf2bee47ac1a7b323","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d406ab6b97d9a344c1620538ccf6d72332be0b06b08fd8ebf2bee47ac1a7b323","first_computed_at":"2026-07-05T11:16:36.799417Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:16:36.799417Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"tAth5Ko73qknEIqOkIdORRSQ82J468oJxyOocRm89c9n7uMPVZxl8DVLeZDWV9Qct31KGtCfkplPBajO2ML9Cg==","signature_status":"signed_v1","signed_at":"2026-07-05T11:16:36.799977Z","signed_message":"canonical_sha256_bytes"},"source_id":"2506.04794","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:63449577fd122538b0a25da78bf684430b5e6f3aaafd9cf2c6438e0df1fb5aa5","sha256:84747005d5cd01c4f1252e95b7ce1c1c4a7ae0fff740ac81442526ea41e37a77"],"state_sha256":"9d043917dc2a0bbef0174ebbd39e81585a09ad33dd58db5c1e7551e79073af8a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6xYOkjcA1vXVgN+3ldUgaftSRxyovEnKh3lGP6+qD5LRjKCKevmatZ4VXP57OE8iSmW2vUfP4hbjASovPOeVCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-11T04:52:14.517460Z","bundle_sha256":"c10b2be793264317a67ed8030c0b2e680562bd6c4f27794ab410fa0e89d569c3"}}