{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:G5T7HGL4PCVTR6BLBVCESKBGUL","short_pith_number":"pith:G5T7HGL4","canonical_record":{"source":{"id":"1604.07620","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2016-04-26T11:15:36Z","cross_cats_sorted":[],"title_canon_sha256":"7dfd2d3d177764cf2ef53bba49d00bdd65494640a40f98f6e0e6da02e4dcc73f","abstract_canon_sha256":"030fdae51ecfa02c3baf430c54887d75215a4738cb4b744dcb07388de9682b21"},"schema_version":"1.0"},"canonical_sha256":"3767f3997c78ab38f82b0d44492826a2cfd6fd3a0366da6f38ca5a9d2f312a0e","source":{"kind":"arxiv","id":"1604.07620","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1604.07620","created_at":"2026-05-18T00:55:46Z"},{"alias_kind":"arxiv_version","alias_value":"1604.07620v1","created_at":"2026-05-18T00:55:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1604.07620","created_at":"2026-05-18T00:55:46Z"},{"alias_kind":"pith_short_12","alias_value":"G5T7HGL4PCVT","created_at":"2026-05-18T12:30:15Z"},{"alias_kind":"pith_short_16","alias_value":"G5T7HGL4PCVTR6BL","created_at":"2026-05-18T12:30:15Z"},{"alias_kind":"pith_short_8","alias_value":"G5T7HGL4","created_at":"2026-05-18T12:30:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:G5T7HGL4PCVTR6BLBVCESKBGUL","target":"record","payload":{"canonical_record":{"source":{"id":"1604.07620","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2016-04-26T11:15:36Z","cross_cats_sorted":[],"title_canon_sha256":"7dfd2d3d177764cf2ef53bba49d00bdd65494640a40f98f6e0e6da02e4dcc73f","abstract_canon_sha256":"030fdae51ecfa02c3baf430c54887d75215a4738cb4b744dcb07388de9682b21"},"schema_version":"1.0"},"canonical_sha256":"3767f3997c78ab38f82b0d44492826a2cfd6fd3a0366da6f38ca5a9d2f312a0e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:55:46.551311Z","signature_b64":"Qo2/VstqNh8jYLlRqnXIMzSJoWARrfo9t/09CfLBnB2T8njTDiRDDng2ZP8ZQwr3NBCmLOFBNmNuxx3QqrwQDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3767f3997c78ab38f82b0d44492826a2cfd6fd3a0366da6f38ca5a9d2f312a0e","last_reissued_at":"2026-05-18T00:55:46.550794Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:55:46.550794Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1604.07620","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":"2026-05-18T00:55:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2kaeaungScdsv6O6GfldykGIwcl78Fqf+StWEiNbxudl5q5cm2P0TcubRhKRpEaFvVgFCzPJV7mOjWXWZdVrCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T22:17:56.605757Z"},"content_sha256":"20ca912a251e268c3005c842e080c5114be160043083b382f45c225afa4f6dd1","schema_version":"1.0","event_id":"sha256:20ca912a251e268c3005c842e080c5114be160043083b382f45c225afa4f6dd1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:G5T7HGL4PCVTR6BLBVCESKBGUL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Simple Model for Understanding the DIM Dust Measurement at Comet 67P/Churyumov-Gerasimenko","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Alberto Flandes, Harald Kr\\\"uger, Morris Podolak, Vincenzo Della Corte","submitted_at":"2016-04-26T11:15:36Z","abstract_excerpt":"We present a simple model for gas and dust flow from 67P/Churyumov-Gerasimenko that can be used to understand the grain impact observed by the DIM instrument on Philae (Krueger et al. 2015) We show how model results when applied to the GIADA measurements (Rotundi et al. 2015; Della Corte et al. 2015) can be used, in conjunction with the results found by the MIRO (Schloerb et al. 2015) and VIRTIS (De Sanctis et al. 2015) instruments to infer surface properties such as surface temperature and surface ice fraction."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1604.07620","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":"2026-05-18T00:55:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"e3zHq7uERcrAgrCw/UkOONpSlsWOjhSnFtUnk/tQCrs1+/fmv6LKmXvsU0G7zEd1UNDRAv1nqS5rkhjHcwhHBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T22:17:56.606399Z"},"content_sha256":"7bbabd19f2f671bfb7355bdd027527beec050a02c0141131050a6f72d8cee7cf","schema_version":"1.0","event_id":"sha256:7bbabd19f2f671bfb7355bdd027527beec050a02c0141131050a6f72d8cee7cf"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/G5T7HGL4PCVTR6BLBVCESKBGUL/bundle.json","state_url":"https://pith.science/pith/G5T7HGL4PCVTR6BLBVCESKBGUL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/G5T7HGL4PCVTR6BLBVCESKBGUL/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":"2026-06-04T22:17:56Z","links":{"resolver":"https://pith.science/pith/G5T7HGL4PCVTR6BLBVCESKBGUL","bundle":"https://pith.science/pith/G5T7HGL4PCVTR6BLBVCESKBGUL/bundle.json","state":"https://pith.science/pith/G5T7HGL4PCVTR6BLBVCESKBGUL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/G5T7HGL4PCVTR6BLBVCESKBGUL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:G5T7HGL4PCVTR6BLBVCESKBGUL","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":"030fdae51ecfa02c3baf430c54887d75215a4738cb4b744dcb07388de9682b21","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2016-04-26T11:15:36Z","title_canon_sha256":"7dfd2d3d177764cf2ef53bba49d00bdd65494640a40f98f6e0e6da02e4dcc73f"},"schema_version":"1.0","source":{"id":"1604.07620","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1604.07620","created_at":"2026-05-18T00:55:46Z"},{"alias_kind":"arxiv_version","alias_value":"1604.07620v1","created_at":"2026-05-18T00:55:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1604.07620","created_at":"2026-05-18T00:55:46Z"},{"alias_kind":"pith_short_12","alias_value":"G5T7HGL4PCVT","created_at":"2026-05-18T12:30:15Z"},{"alias_kind":"pith_short_16","alias_value":"G5T7HGL4PCVTR6BL","created_at":"2026-05-18T12:30:15Z"},{"alias_kind":"pith_short_8","alias_value":"G5T7HGL4","created_at":"2026-05-18T12:30:15Z"}],"graph_snapshots":[{"event_id":"sha256:7bbabd19f2f671bfb7355bdd027527beec050a02c0141131050a6f72d8cee7cf","target":"graph","created_at":"2026-05-18T00:55:46Z","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":"We present a simple model for gas and dust flow from 67P/Churyumov-Gerasimenko that can be used to understand the grain impact observed by the DIM instrument on Philae (Krueger et al. 2015) We show how model results when applied to the GIADA measurements (Rotundi et al. 2015; Della Corte et al. 2015) can be used, in conjunction with the results found by the MIRO (Schloerb et al. 2015) and VIRTIS (De Sanctis et al. 2015) instruments to infer surface properties such as surface temperature and surface ice fraction.","authors_text":"Alberto Flandes, Harald Kr\\\"uger, Morris Podolak, Vincenzo Della Corte","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2016-04-26T11:15:36Z","title":"A Simple Model for Understanding the DIM Dust Measurement at Comet 67P/Churyumov-Gerasimenko"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1604.07620","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":"sha256:20ca912a251e268c3005c842e080c5114be160043083b382f45c225afa4f6dd1","target":"record","created_at":"2026-05-18T00:55:46Z","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":"030fdae51ecfa02c3baf430c54887d75215a4738cb4b744dcb07388de9682b21","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2016-04-26T11:15:36Z","title_canon_sha256":"7dfd2d3d177764cf2ef53bba49d00bdd65494640a40f98f6e0e6da02e4dcc73f"},"schema_version":"1.0","source":{"id":"1604.07620","kind":"arxiv","version":1}},"canonical_sha256":"3767f3997c78ab38f82b0d44492826a2cfd6fd3a0366da6f38ca5a9d2f312a0e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3767f3997c78ab38f82b0d44492826a2cfd6fd3a0366da6f38ca5a9d2f312a0e","first_computed_at":"2026-05-18T00:55:46.550794Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:55:46.550794Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Qo2/VstqNh8jYLlRqnXIMzSJoWARrfo9t/09CfLBnB2T8njTDiRDDng2ZP8ZQwr3NBCmLOFBNmNuxx3QqrwQDg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:55:46.551311Z","signed_message":"canonical_sha256_bytes"},"source_id":"1604.07620","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:20ca912a251e268c3005c842e080c5114be160043083b382f45c225afa4f6dd1","sha256:7bbabd19f2f671bfb7355bdd027527beec050a02c0141131050a6f72d8cee7cf"],"state_sha256":"8bc0a1914ab67d9b891b9656feb9ae30b758b07ae010358e22a2210ac7c6682e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"m5e+fqlUyz+RIp2oJcIriClkTf5w1a6ZPMXOeh/pttRrvFcwrh5kOwJQKY8Y96GWRU1c/a1pq6ipLe9ApN2SCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T22:17:56.609759Z","bundle_sha256":"246d4a07ced636617756a4d4a5344cf47d4a67295edc9b384de6b22d64ebdcad"}}