{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:CXMZZZQMELXXAGBXQ44APRGZMI","short_pith_number":"pith:CXMZZZQM","canonical_record":{"source":{"id":"1709.08931","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-09-26T10:31:40Z","cross_cats_sorted":[],"title_canon_sha256":"f99ecb751fa01bc8363c4cf9dd81a0b681f8d53cf2155a274060501d278954ac","abstract_canon_sha256":"8ba124f8f9f2cd2714af09facbf338d5566430fc8e42861f70c61c622586f1c2"},"schema_version":"1.0"},"canonical_sha256":"15d99ce60c22ef701837873807c4d9621cc749b579015fda36a61cb729f3afac","source":{"kind":"arxiv","id":"1709.08931","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1709.08931","created_at":"2026-05-18T00:32:38Z"},{"alias_kind":"arxiv_version","alias_value":"1709.08931v1","created_at":"2026-05-18T00:32:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1709.08931","created_at":"2026-05-18T00:32:38Z"},{"alias_kind":"pith_short_12","alias_value":"CXMZZZQMELXX","created_at":"2026-05-18T12:31:10Z"},{"alias_kind":"pith_short_16","alias_value":"CXMZZZQMELXXAGBX","created_at":"2026-05-18T12:31:10Z"},{"alias_kind":"pith_short_8","alias_value":"CXMZZZQM","created_at":"2026-05-18T12:31:10Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:CXMZZZQMELXXAGBXQ44APRGZMI","target":"record","payload":{"canonical_record":{"source":{"id":"1709.08931","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-09-26T10:31:40Z","cross_cats_sorted":[],"title_canon_sha256":"f99ecb751fa01bc8363c4cf9dd81a0b681f8d53cf2155a274060501d278954ac","abstract_canon_sha256":"8ba124f8f9f2cd2714af09facbf338d5566430fc8e42861f70c61c622586f1c2"},"schema_version":"1.0"},"canonical_sha256":"15d99ce60c22ef701837873807c4d9621cc749b579015fda36a61cb729f3afac","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:32:38.733544Z","signature_b64":"zgu6KlOAKFOr2kRt8vcwpAdjsO2rinARYX9clr13OULd5ntzPqlvPPFZU6pkDsVISmIXGZlGHysFy8fOI29pDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"15d99ce60c22ef701837873807c4d9621cc749b579015fda36a61cb729f3afac","last_reissued_at":"2026-05-18T00:32:38.732926Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:32:38.732926Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1709.08931","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":"2026-05-18T00:32:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EpqdGkNXipzLNkkBHwXe/UJWQJosFa30rr/duSfNg7derC8JPNxGbRfjSuRzgo8OfIhfGQ9zVVPV3fY8zRkAAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T15:56:04.547217Z"},"content_sha256":"a640b8d1d24f6c45303d5aebdc0030f6cbbf5b638e41dd4a556c3328cf404b44","schema_version":"1.0","event_id":"sha256:a640b8d1d24f6c45303d5aebdc0030f6cbbf5b638e41dd4a556c3328cf404b44"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:CXMZZZQMELXXAGBXQ44APRGZMI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Near-UV OH Prompt Emission in the Innermost Coma of 103P/Hartley 2","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Dennis Bodewits, Fiorangela La Forgia, Jessica Sunshine, Lori Feaga, Michael F. A'Hearn, Michael S. P. Kelley, Silvia Protopapa, Tony Farnham","submitted_at":"2017-09-26T10:31:40Z","abstract_excerpt":"The Deep Impact spacecraft fly-by of comet 103P/Hartley 2 occurred on 2010 November 4, one week after perihelion with a closest approach (CA) distance of about 700 km. We used narrowband images obtained by the Medium Resolution Imager (MRI) onboard the spacecraft to study the gas and dust in the innermost coma. We derived an overall dust reddening of 15\\%/100 nm between 345 and 749 nm and identified a blue enhancement in the dust coma in the sunward direction within 5 km from the nucleus, which we interpret as a localized enrichment in water ice. OH column density maps show an anti-sunward enh"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.08931","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":"2026-05-18T00:32:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Jq8VZIao9gylAymV12029V7LRVaL80jcpxeT+T8StR97mvcw86Chkekf/zNYcVGuX4DR7Lx3mxQSwUWDs/zzBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T15:56:04.547781Z"},"content_sha256":"411bd3a12645d708e6c7899d5259c2fa780b80d1bbb2de0aebb6367c9de5db82","schema_version":"1.0","event_id":"sha256:411bd3a12645d708e6c7899d5259c2fa780b80d1bbb2de0aebb6367c9de5db82"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CXMZZZQMELXXAGBXQ44APRGZMI/bundle.json","state_url":"https://pith.science/pith/CXMZZZQMELXXAGBXQ44APRGZMI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CXMZZZQMELXXAGBXQ44APRGZMI/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":"2026-08-14T15:56:04Z","links":{"resolver":"https://pith.science/pith/CXMZZZQMELXXAGBXQ44APRGZMI","bundle":"https://pith.science/pith/CXMZZZQMELXXAGBXQ44APRGZMI/bundle.json","state":"https://pith.science/pith/CXMZZZQMELXXAGBXQ44APRGZMI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CXMZZZQMELXXAGBXQ44APRGZMI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:CXMZZZQMELXXAGBXQ44APRGZMI","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":"8ba124f8f9f2cd2714af09facbf338d5566430fc8e42861f70c61c622586f1c2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-09-26T10:31:40Z","title_canon_sha256":"f99ecb751fa01bc8363c4cf9dd81a0b681f8d53cf2155a274060501d278954ac"},"schema_version":"1.0","source":{"id":"1709.08931","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1709.08931","created_at":"2026-05-18T00:32:38Z"},{"alias_kind":"arxiv_version","alias_value":"1709.08931v1","created_at":"2026-05-18T00:32:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1709.08931","created_at":"2026-05-18T00:32:38Z"},{"alias_kind":"pith_short_12","alias_value":"CXMZZZQMELXX","created_at":"2026-05-18T12:31:10Z"},{"alias_kind":"pith_short_16","alias_value":"CXMZZZQMELXXAGBX","created_at":"2026-05-18T12:31:10Z"},{"alias_kind":"pith_short_8","alias_value":"CXMZZZQM","created_at":"2026-05-18T12:31:10Z"}],"graph_snapshots":[{"event_id":"sha256:411bd3a12645d708e6c7899d5259c2fa780b80d1bbb2de0aebb6367c9de5db82","target":"graph","created_at":"2026-05-18T00:32:38Z","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 Deep Impact spacecraft fly-by of comet 103P/Hartley 2 occurred on 2010 November 4, one week after perihelion with a closest approach (CA) distance of about 700 km. We used narrowband images obtained by the Medium Resolution Imager (MRI) onboard the spacecraft to study the gas and dust in the innermost coma. We derived an overall dust reddening of 15\\%/100 nm between 345 and 749 nm and identified a blue enhancement in the dust coma in the sunward direction within 5 km from the nucleus, which we interpret as a localized enrichment in water ice. OH column density maps show an anti-sunward enh","authors_text":"Dennis Bodewits, Fiorangela La Forgia, Jessica Sunshine, Lori Feaga, Michael F. A'Hearn, Michael S. P. Kelley, Silvia Protopapa, Tony Farnham","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-09-26T10:31:40Z","title":"Near-UV OH Prompt Emission in the Innermost Coma of 103P/Hartley 2"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.08931","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:a640b8d1d24f6c45303d5aebdc0030f6cbbf5b638e41dd4a556c3328cf404b44","target":"record","created_at":"2026-05-18T00:32:38Z","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":"8ba124f8f9f2cd2714af09facbf338d5566430fc8e42861f70c61c622586f1c2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2017-09-26T10:31:40Z","title_canon_sha256":"f99ecb751fa01bc8363c4cf9dd81a0b681f8d53cf2155a274060501d278954ac"},"schema_version":"1.0","source":{"id":"1709.08931","kind":"arxiv","version":1}},"canonical_sha256":"15d99ce60c22ef701837873807c4d9621cc749b579015fda36a61cb729f3afac","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"15d99ce60c22ef701837873807c4d9621cc749b579015fda36a61cb729f3afac","first_computed_at":"2026-05-18T00:32:38.732926Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:32:38.732926Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"zgu6KlOAKFOr2kRt8vcwpAdjsO2rinARYX9clr13OULd5ntzPqlvPPFZU6pkDsVISmIXGZlGHysFy8fOI29pDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:32:38.733544Z","signed_message":"canonical_sha256_bytes"},"source_id":"1709.08931","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a640b8d1d24f6c45303d5aebdc0030f6cbbf5b638e41dd4a556c3328cf404b44","sha256:411bd3a12645d708e6c7899d5259c2fa780b80d1bbb2de0aebb6367c9de5db82"],"state_sha256":"634772836b332954e4e76ba7333c4ebdff3d58e2e4f346a7d3b3982de6e65d49"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Rrxtkcf0aIm0X20u1Ydtce0kZceOKm3mgTet3/EX/jGCC0Xg1fX5PwaE+b/OokAveCFRzd9J4txTNAJTGD/XDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-14T15:56:04.553403Z","bundle_sha256":"3ec04f7f38fb3502122711787d9f68aed54664a0b4a14ec7eaf79b1ac824983e"}}