{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:C6NSXDESFKKDLKDG4DP7K7FJHA","short_pith_number":"pith:C6NSXDES","canonical_record":{"source":{"id":"1907.06888","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-07-16T08:43:02Z","cross_cats_sorted":["astro-ph.SR","physics.space-ph"],"title_canon_sha256":"e9d036ae7772ac2f582130e3b66f30ddcf9aacc7bf2318b717044f49bf690583","abstract_canon_sha256":"10b9ee61703aad2130f750a6a865bde7e62022568113396fa522ab180de85180"},"schema_version":"1.0"},"canonical_sha256":"179b2b8c922a9435a866e0dff57ca938305e64b6e12925a3d6c13b33f3ede6e0","source":{"kind":"arxiv","id":"1907.06888","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.06888","created_at":"2026-05-17T23:40:28Z"},{"alias_kind":"arxiv_version","alias_value":"1907.06888v1","created_at":"2026-05-17T23:40:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.06888","created_at":"2026-05-17T23:40:28Z"},{"alias_kind":"pith_short_12","alias_value":"C6NSXDESFKKD","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_16","alias_value":"C6NSXDESFKKDLKDG","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_8","alias_value":"C6NSXDES","created_at":"2026-05-18T12:33:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:C6NSXDESFKKDLKDG4DP7K7FJHA","target":"record","payload":{"canonical_record":{"source":{"id":"1907.06888","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-07-16T08:43:02Z","cross_cats_sorted":["astro-ph.SR","physics.space-ph"],"title_canon_sha256":"e9d036ae7772ac2f582130e3b66f30ddcf9aacc7bf2318b717044f49bf690583","abstract_canon_sha256":"10b9ee61703aad2130f750a6a865bde7e62022568113396fa522ab180de85180"},"schema_version":"1.0"},"canonical_sha256":"179b2b8c922a9435a866e0dff57ca938305e64b6e12925a3d6c13b33f3ede6e0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:40:28.788878Z","signature_b64":"Lf2qPApWygJ4iWtzltk0RUlvRRNx3P28T20Q6oF8QtEIB6cvatcEaD2pCxjpfD/evpmX0/sUdCxOU/st6LXnCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"179b2b8c922a9435a866e0dff57ca938305e64b6e12925a3d6c13b33f3ede6e0","last_reissued_at":"2026-05-17T23:40:28.788216Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:40:28.788216Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1907.06888","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":"2026-05-17T23:40:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lrWMWHXurn5lwh7udvdK4lRX8FR3ccXriZGKC4BYBoQSUHdrLIlNWnfh7WPQpldzLx7h24D2jgI+QJ1uedumBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T13:03:39.509969Z"},"content_sha256":"a85dd93484b208a555da15494bd6174410fa3b523611cb72fd1ac53efc3f1d89","schema_version":"1.0","event_id":"sha256:a85dd93484b208a555da15494bd6174410fa3b523611cb72fd1ac53efc3f1d89"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:C6NSXDESFKKDLKDG4DP7K7FJHA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A comparison between the two lobes of comet 67P/Churyumov-Gerasimenko based on D/H ratios in H2O measured with the Rosetta/ROSINA DFMS","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR","physics.space-ph"],"primary_cat":"astro-ph.EP","authors_text":"Bj\\\"orn Fiethe, Hans Balsiger, Isaac R.H.G. Schroeder I, Jean-Jacques Berthelier, Johan De Keyser, Kathrin Altwegg, Kenneth C. Hansen, Martin Rubin, Michael R. Combi, Peter Wurz, Stephen A. Fuselier, Susanne F. Wampfler, Tamas I. Gombosi, Thierry S\\'emon, Valeriy M. Tenishev, Yinsi Shou","submitted_at":"2019-07-16T08:43:02Z","abstract_excerpt":"The nucleus of the Jupiter-family comet 67P/Churyumov-Gerasimenko was discovered to be bi-lobate in shape when the European Space Agency spacecraft Rosetta first approached it in July 2014. The bi-lobate structure of the cometary nucleus has led to much discussion regarding the possible manner of its formation and on how the composition of each lobe might compare with that of the other. During its two-year-long mission from 2014 to 2016, Rosetta remained in close proximity to 67P/Churyumov-Gerasimenko, studying its coma and nucleus in situ. Based on lobe-specific measurements of HDO and H2O pe"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.06888","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":"2026-05-17T23:40:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OnK5rMWq9Bjy9JuVw5iCntpTotTlj9RXlA06hNMAUGpKIszPLLb3XtQFNxcpVjWDYp2IyyWifQXZn3N3cdBcDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T13:03:39.510336Z"},"content_sha256":"85c8b9d14901b2d0c84aa2c1f9d9eb597233ff9316bc38d4095cb097dd178f74","schema_version":"1.0","event_id":"sha256:85c8b9d14901b2d0c84aa2c1f9d9eb597233ff9316bc38d4095cb097dd178f74"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/C6NSXDESFKKDLKDG4DP7K7FJHA/bundle.json","state_url":"https://pith.science/pith/C6NSXDESFKKDLKDG4DP7K7FJHA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/C6NSXDESFKKDLKDG4DP7K7FJHA/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":"2026-06-03T13:03:39Z","links":{"resolver":"https://pith.science/pith/C6NSXDESFKKDLKDG4DP7K7FJHA","bundle":"https://pith.science/pith/C6NSXDESFKKDLKDG4DP7K7FJHA/bundle.json","state":"https://pith.science/pith/C6NSXDESFKKDLKDG4DP7K7FJHA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/C6NSXDESFKKDLKDG4DP7K7FJHA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:C6NSXDESFKKDLKDG4DP7K7FJHA","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":"10b9ee61703aad2130f750a6a865bde7e62022568113396fa522ab180de85180","cross_cats_sorted":["astro-ph.SR","physics.space-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-07-16T08:43:02Z","title_canon_sha256":"e9d036ae7772ac2f582130e3b66f30ddcf9aacc7bf2318b717044f49bf690583"},"schema_version":"1.0","source":{"id":"1907.06888","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.06888","created_at":"2026-05-17T23:40:28Z"},{"alias_kind":"arxiv_version","alias_value":"1907.06888v1","created_at":"2026-05-17T23:40:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.06888","created_at":"2026-05-17T23:40:28Z"},{"alias_kind":"pith_short_12","alias_value":"C6NSXDESFKKD","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_16","alias_value":"C6NSXDESFKKDLKDG","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_8","alias_value":"C6NSXDES","created_at":"2026-05-18T12:33:12Z"}],"graph_snapshots":[{"event_id":"sha256:85c8b9d14901b2d0c84aa2c1f9d9eb597233ff9316bc38d4095cb097dd178f74","target":"graph","created_at":"2026-05-17T23:40:28Z","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":"The nucleus of the Jupiter-family comet 67P/Churyumov-Gerasimenko was discovered to be bi-lobate in shape when the European Space Agency spacecraft Rosetta first approached it in July 2014. The bi-lobate structure of the cometary nucleus has led to much discussion regarding the possible manner of its formation and on how the composition of each lobe might compare with that of the other. During its two-year-long mission from 2014 to 2016, Rosetta remained in close proximity to 67P/Churyumov-Gerasimenko, studying its coma and nucleus in situ. Based on lobe-specific measurements of HDO and H2O pe","authors_text":"Bj\\\"orn Fiethe, Hans Balsiger, Isaac R.H.G. Schroeder I, Jean-Jacques Berthelier, Johan De Keyser, Kathrin Altwegg, Kenneth C. Hansen, Martin Rubin, Michael R. Combi, Peter Wurz, Stephen A. Fuselier, Susanne F. Wampfler, Tamas I. Gombosi, Thierry S\\'emon, Valeriy M. Tenishev, Yinsi Shou","cross_cats":["astro-ph.SR","physics.space-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-07-16T08:43:02Z","title":"A comparison between the two lobes of comet 67P/Churyumov-Gerasimenko based on D/H ratios in H2O measured with the Rosetta/ROSINA DFMS"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.06888","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:a85dd93484b208a555da15494bd6174410fa3b523611cb72fd1ac53efc3f1d89","target":"record","created_at":"2026-05-17T23:40:28Z","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":"10b9ee61703aad2130f750a6a865bde7e62022568113396fa522ab180de85180","cross_cats_sorted":["astro-ph.SR","physics.space-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-07-16T08:43:02Z","title_canon_sha256":"e9d036ae7772ac2f582130e3b66f30ddcf9aacc7bf2318b717044f49bf690583"},"schema_version":"1.0","source":{"id":"1907.06888","kind":"arxiv","version":1}},"canonical_sha256":"179b2b8c922a9435a866e0dff57ca938305e64b6e12925a3d6c13b33f3ede6e0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"179b2b8c922a9435a866e0dff57ca938305e64b6e12925a3d6c13b33f3ede6e0","first_computed_at":"2026-05-17T23:40:28.788216Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:40:28.788216Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Lf2qPApWygJ4iWtzltk0RUlvRRNx3P28T20Q6oF8QtEIB6cvatcEaD2pCxjpfD/evpmX0/sUdCxOU/st6LXnCA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:40:28.788878Z","signed_message":"canonical_sha256_bytes"},"source_id":"1907.06888","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a85dd93484b208a555da15494bd6174410fa3b523611cb72fd1ac53efc3f1d89","sha256:85c8b9d14901b2d0c84aa2c1f9d9eb597233ff9316bc38d4095cb097dd178f74"],"state_sha256":"46360f24a8623d955ca163eafb5fbe5536f215061981458dc137aed2079e365c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KuQpjnBXnmVwu0Dxpm8hilDLtbW46tGh91Vit3pMIeY5PsVHdIBRd7LjVDqYgHabIC3LDmaSF22R6cqsO2LPDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T13:03:39.512268Z","bundle_sha256":"382ff9c8298642966574005bfd20ee3b8a59a4a3996d328cd17254bb37f69118"}}