{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:BSGOCJFHYHPZW6VMXCXBLYUS2R","short_pith_number":"pith:BSGOCJFH","canonical_record":{"source":{"id":"1905.01901","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-05-06T09:47:56Z","cross_cats_sorted":[],"title_canon_sha256":"68a61bd1d80a2a4fb1ecf70b6e9f23481a016a67b031df13e0d6154e24a92ca8","abstract_canon_sha256":"fc9092bfa2b3a8d1016367de9abe962e15dc7a03e086f1756ec5ddd3abce1263"},"schema_version":"1.0"},"canonical_sha256":"0c8ce124a7c1df9b7aacb8ae15e292d450ce2cc4fe0e1736d535c5189a1586a0","source":{"kind":"arxiv","id":"1905.01901","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.01901","created_at":"2026-05-17T23:43:02Z"},{"alias_kind":"arxiv_version","alias_value":"1905.01901v1","created_at":"2026-05-17T23:43:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.01901","created_at":"2026-05-17T23:43:02Z"},{"alias_kind":"pith_short_12","alias_value":"BSGOCJFHYHPZ","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_16","alias_value":"BSGOCJFHYHPZW6VM","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_8","alias_value":"BSGOCJFH","created_at":"2026-05-18T12:33:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:BSGOCJFHYHPZW6VMXCXBLYUS2R","target":"record","payload":{"canonical_record":{"source":{"id":"1905.01901","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-05-06T09:47:56Z","cross_cats_sorted":[],"title_canon_sha256":"68a61bd1d80a2a4fb1ecf70b6e9f23481a016a67b031df13e0d6154e24a92ca8","abstract_canon_sha256":"fc9092bfa2b3a8d1016367de9abe962e15dc7a03e086f1756ec5ddd3abce1263"},"schema_version":"1.0"},"canonical_sha256":"0c8ce124a7c1df9b7aacb8ae15e292d450ce2cc4fe0e1736d535c5189a1586a0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:43:02.243052Z","signature_b64":"RD3+oQHmfvaRBzoghh7M5piHi+62aVe0lP/XTLk9xKxmDnsyeShD++NgU5L67lIjMvFmbQEBroZ4hNnKtfjjBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0c8ce124a7c1df9b7aacb8ae15e292d450ce2cc4fe0e1736d535c5189a1586a0","last_reissued_at":"2026-05-17T23:43:02.242592Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:43:02.242592Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1905.01901","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":"2026-05-17T23:43:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GUtXoIjTLy8/P7m7mX1WQKP5YIBDunlGl8gp9mGNzqtEC204PvOQfHvox6ubPXyWLJKBHbqVkkdhorK546dhAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-24T23:29:13.677666Z"},"content_sha256":"9350625f29567f8cfdf6e38a80f3fcfff984f05dec27d581e7998d0f2b227203","schema_version":"1.0","event_id":"sha256:9350625f29567f8cfdf6e38a80f3fcfff984f05dec27d581e7998d0f2b227203"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:BSGOCJFHYHPZW6VMXCXBLYUS2R","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Investigating the Efficiency of Explosion Chemistry as a Source of Complex Organic Molecules in TMC-1","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"David Williams, Dimitrios Skouteris, Jonathan Holdship, Jonathan Rawlings, Nadia Balucani, Serena Viti","submitted_at":"2019-05-06T09:47:56Z","abstract_excerpt":"Many species of complex organic molecules (COMs) have been observed in several astrophysical environments but it is not clear how they are produced, particularly in cold, quiescent regions. One process that has been proposed as a means to enhance the chemical complexity of the gas phase in such regions is the explosion of the ice mantles of dust grains. In this process, a build up of chemical energy in the ice is released, sublimating the ices and producing a short lived phase of high density, high temperature gas. The gas-grain chemical code UCLCHEM has been modified to treat these explosions"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.01901","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":""},"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":"2026-05-17T23:43:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"q/xFninb6ILUEPM/dLjBmc1qCUP0a4iObAxa70i519gWaauyg+czBehb3xJwF8VbKrxDVY2aO/6Zll+KpETQDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-24T23:29:13.678158Z"},"content_sha256":"7b3601880979e7b75e845dd3a2986c26e3e56988fe40bdf96530c83e5273576b","schema_version":"1.0","event_id":"sha256:7b3601880979e7b75e845dd3a2986c26e3e56988fe40bdf96530c83e5273576b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BSGOCJFHYHPZW6VMXCXBLYUS2R/bundle.json","state_url":"https://pith.science/pith/BSGOCJFHYHPZW6VMXCXBLYUS2R/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BSGOCJFHYHPZW6VMXCXBLYUS2R/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":"2026-05-24T23:29:13Z","links":{"resolver":"https://pith.science/pith/BSGOCJFHYHPZW6VMXCXBLYUS2R","bundle":"https://pith.science/pith/BSGOCJFHYHPZW6VMXCXBLYUS2R/bundle.json","state":"https://pith.science/pith/BSGOCJFHYHPZW6VMXCXBLYUS2R/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BSGOCJFHYHPZW6VMXCXBLYUS2R/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:BSGOCJFHYHPZW6VMXCXBLYUS2R","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":"fc9092bfa2b3a8d1016367de9abe962e15dc7a03e086f1756ec5ddd3abce1263","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-05-06T09:47:56Z","title_canon_sha256":"68a61bd1d80a2a4fb1ecf70b6e9f23481a016a67b031df13e0d6154e24a92ca8"},"schema_version":"1.0","source":{"id":"1905.01901","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.01901","created_at":"2026-05-17T23:43:02Z"},{"alias_kind":"arxiv_version","alias_value":"1905.01901v1","created_at":"2026-05-17T23:43:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.01901","created_at":"2026-05-17T23:43:02Z"},{"alias_kind":"pith_short_12","alias_value":"BSGOCJFHYHPZ","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_16","alias_value":"BSGOCJFHYHPZW6VM","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_8","alias_value":"BSGOCJFH","created_at":"2026-05-18T12:33:12Z"}],"graph_snapshots":[{"event_id":"sha256:7b3601880979e7b75e845dd3a2986c26e3e56988fe40bdf96530c83e5273576b","target":"graph","created_at":"2026-05-17T23:43:02Z","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":"Many species of complex organic molecules (COMs) have been observed in several astrophysical environments but it is not clear how they are produced, particularly in cold, quiescent regions. One process that has been proposed as a means to enhance the chemical complexity of the gas phase in such regions is the explosion of the ice mantles of dust grains. In this process, a build up of chemical energy in the ice is released, sublimating the ices and producing a short lived phase of high density, high temperature gas. The gas-grain chemical code UCLCHEM has been modified to treat these explosions","authors_text":"David Williams, Dimitrios Skouteris, Jonathan Holdship, Jonathan Rawlings, Nadia Balucani, Serena Viti","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-05-06T09:47:56Z","title":"Investigating the Efficiency of Explosion Chemistry as a Source of Complex Organic Molecules in TMC-1"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.01901","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":"sha256:9350625f29567f8cfdf6e38a80f3fcfff984f05dec27d581e7998d0f2b227203","target":"record","created_at":"2026-05-17T23:43:02Z","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":"fc9092bfa2b3a8d1016367de9abe962e15dc7a03e086f1756ec5ddd3abce1263","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-05-06T09:47:56Z","title_canon_sha256":"68a61bd1d80a2a4fb1ecf70b6e9f23481a016a67b031df13e0d6154e24a92ca8"},"schema_version":"1.0","source":{"id":"1905.01901","kind":"arxiv","version":1}},"canonical_sha256":"0c8ce124a7c1df9b7aacb8ae15e292d450ce2cc4fe0e1736d535c5189a1586a0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0c8ce124a7c1df9b7aacb8ae15e292d450ce2cc4fe0e1736d535c5189a1586a0","first_computed_at":"2026-05-17T23:43:02.242592Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:43:02.242592Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"RD3+oQHmfvaRBzoghh7M5piHi+62aVe0lP/XTLk9xKxmDnsyeShD++NgU5L67lIjMvFmbQEBroZ4hNnKtfjjBA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:43:02.243052Z","signed_message":"canonical_sha256_bytes"},"source_id":"1905.01901","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9350625f29567f8cfdf6e38a80f3fcfff984f05dec27d581e7998d0f2b227203","sha256:7b3601880979e7b75e845dd3a2986c26e3e56988fe40bdf96530c83e5273576b"],"state_sha256":"17d9f6a9d1a74464f1d4eaabac9e274c54f2d36a6a8c5c925bd2b2f1e16fe918"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"g8oEC0hR98Tb86Js77aUIna8KlexNHzaFjVGBTmXBKT4CDOoW91pGfJKfLsWHWxSjZqKELETnf5CkpCiEwGsCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-24T23:29:13.681795Z","bundle_sha256":"e5b06f9a6eee3c8ead16569a4bc1ddc87e619054fd3756592e259820906a74df"}}