{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:YIEM3YVNAC5KHDH5QZZ5PT6HAZ","short_pith_number":"pith:YIEM3YVN","canonical_record":{"source":{"id":"2207.13883","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2022-07-28T05:22:24Z","cross_cats_sorted":[],"title_canon_sha256":"a475365a105405478c28cb6c4820cbb0249666ced3ecfb032d8be88669b831e8","abstract_canon_sha256":"4a2b53b8532ea1624a5f8bbe47df56c552c048765f127aeda0a378ba13098177"},"schema_version":"1.0"},"canonical_sha256":"c208cde2ad00baa38cfd8673d7cfc706715dfff232455f510cb5217e9afa2bc1","source":{"kind":"arxiv","id":"2207.13883","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2207.13883","created_at":"2026-07-05T04:44:32Z"},{"alias_kind":"arxiv_version","alias_value":"2207.13883v2","created_at":"2026-07-05T04:44:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2207.13883","created_at":"2026-07-05T04:44:32Z"},{"alias_kind":"pith_short_12","alias_value":"YIEM3YVNAC5K","created_at":"2026-07-05T04:44:32Z"},{"alias_kind":"pith_short_16","alias_value":"YIEM3YVNAC5KHDH5","created_at":"2026-07-05T04:44:32Z"},{"alias_kind":"pith_short_8","alias_value":"YIEM3YVN","created_at":"2026-07-05T04:44:32Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:YIEM3YVNAC5KHDH5QZZ5PT6HAZ","target":"record","payload":{"canonical_record":{"source":{"id":"2207.13883","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2022-07-28T05:22:24Z","cross_cats_sorted":[],"title_canon_sha256":"a475365a105405478c28cb6c4820cbb0249666ced3ecfb032d8be88669b831e8","abstract_canon_sha256":"4a2b53b8532ea1624a5f8bbe47df56c552c048765f127aeda0a378ba13098177"},"schema_version":"1.0"},"canonical_sha256":"c208cde2ad00baa38cfd8673d7cfc706715dfff232455f510cb5217e9afa2bc1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:44:32.390892Z","signature_b64":"yzPI9bKliZm2bBvJx9Eqjj1WuYnOYFTmCDIf0+y1jUDhaDXWLOhUgJOh3EwBNjSt1tDQgzLISXmA/Fw2aZ6pAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c208cde2ad00baa38cfd8673d7cfc706715dfff232455f510cb5217e9afa2bc1","last_reissued_at":"2026-07-05T04:44:32.390441Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:44:32.390441Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2207.13883","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T04:44:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NJc4VInQNJGVgOwB6Gyi29gQHbX4JY1mvRuzTqKm01yWlFBLSpmNbgs6qcWhfVwQ7ZVLYAimbzXpdGSkH9A/Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T21:04:21.839809Z"},"content_sha256":"f75c140266ed45bfb7d5f444596f750e21a401d1ac06c2d7ecf723e49860959b","schema_version":"1.0","event_id":"sha256:f75c140266ed45bfb7d5f444596f750e21a401d1ac06c2d7ecf723e49860959b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:YIEM3YVNAC5KHDH5QZZ5PT6HAZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Review of research on lunar dust dynamics","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Kun Yang, Luyuan Xu, Weiming Feng, XiaoDong Liu","submitted_at":"2022-07-28T05:22:24Z","abstract_excerpt":"Lunar dust particles are generated by hypervelocity impacts of interplanetary micron-meteoroids onto the surface of the Moon, which seriously threatens the security of explorations. Studying the lunar dust dynamics helps to understand the origin and migration mechanism of lunar dust, and to provide the theoretical guidelines for the orbital design of lunar space missions. This paper reviews previous research on the lunar dust dynamics, including the interplanetary impactor environment at the Earth-Moon system, the mass production rate, the initial mass, speed and ejecta angle distributions, th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2207.13883","kind":"arxiv","version":2},"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/2207.13883/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":"2026-07-05T04:44:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rogblf1Fm/qGKB3479YMWpEgVompAOf9vNdadlBLHjH5qmbblSRUiwToxiYCNAWsfcKL2ZwgZxEuOFT3DxXqCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T21:04:21.840472Z"},"content_sha256":"da74b2f0c845a000914e1b31545a3aff7b28177145eb0e2f7d11557f7ca1488e","schema_version":"1.0","event_id":"sha256:da74b2f0c845a000914e1b31545a3aff7b28177145eb0e2f7d11557f7ca1488e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YIEM3YVNAC5KHDH5QZZ5PT6HAZ/bundle.json","state_url":"https://pith.science/pith/YIEM3YVNAC5KHDH5QZZ5PT6HAZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YIEM3YVNAC5KHDH5QZZ5PT6HAZ/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":"2026-08-12T21:04:21Z","links":{"resolver":"https://pith.science/pith/YIEM3YVNAC5KHDH5QZZ5PT6HAZ","bundle":"https://pith.science/pith/YIEM3YVNAC5KHDH5QZZ5PT6HAZ/bundle.json","state":"https://pith.science/pith/YIEM3YVNAC5KHDH5QZZ5PT6HAZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YIEM3YVNAC5KHDH5QZZ5PT6HAZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:YIEM3YVNAC5KHDH5QZZ5PT6HAZ","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":"4a2b53b8532ea1624a5f8bbe47df56c552c048765f127aeda0a378ba13098177","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2022-07-28T05:22:24Z","title_canon_sha256":"a475365a105405478c28cb6c4820cbb0249666ced3ecfb032d8be88669b831e8"},"schema_version":"1.0","source":{"id":"2207.13883","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2207.13883","created_at":"2026-07-05T04:44:32Z"},{"alias_kind":"arxiv_version","alias_value":"2207.13883v2","created_at":"2026-07-05T04:44:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2207.13883","created_at":"2026-07-05T04:44:32Z"},{"alias_kind":"pith_short_12","alias_value":"YIEM3YVNAC5K","created_at":"2026-07-05T04:44:32Z"},{"alias_kind":"pith_short_16","alias_value":"YIEM3YVNAC5KHDH5","created_at":"2026-07-05T04:44:32Z"},{"alias_kind":"pith_short_8","alias_value":"YIEM3YVN","created_at":"2026-07-05T04:44:32Z"}],"graph_snapshots":[{"event_id":"sha256:da74b2f0c845a000914e1b31545a3aff7b28177145eb0e2f7d11557f7ca1488e","target":"graph","created_at":"2026-07-05T04:44:32Z","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/2207.13883/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Lunar dust particles are generated by hypervelocity impacts of interplanetary micron-meteoroids onto the surface of the Moon, which seriously threatens the security of explorations. Studying the lunar dust dynamics helps to understand the origin and migration mechanism of lunar dust, and to provide the theoretical guidelines for the orbital design of lunar space missions. This paper reviews previous research on the lunar dust dynamics, including the interplanetary impactor environment at the Earth-Moon system, the mass production rate, the initial mass, speed and ejecta angle distributions, th","authors_text":"Kun Yang, Luyuan Xu, Weiming Feng, XiaoDong Liu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2022-07-28T05:22:24Z","title":"Review of research on lunar dust dynamics"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2207.13883","kind":"arxiv","version":2},"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:f75c140266ed45bfb7d5f444596f750e21a401d1ac06c2d7ecf723e49860959b","target":"record","created_at":"2026-07-05T04:44:32Z","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":"4a2b53b8532ea1624a5f8bbe47df56c552c048765f127aeda0a378ba13098177","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2022-07-28T05:22:24Z","title_canon_sha256":"a475365a105405478c28cb6c4820cbb0249666ced3ecfb032d8be88669b831e8"},"schema_version":"1.0","source":{"id":"2207.13883","kind":"arxiv","version":2}},"canonical_sha256":"c208cde2ad00baa38cfd8673d7cfc706715dfff232455f510cb5217e9afa2bc1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c208cde2ad00baa38cfd8673d7cfc706715dfff232455f510cb5217e9afa2bc1","first_computed_at":"2026-07-05T04:44:32.390441Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:44:32.390441Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"yzPI9bKliZm2bBvJx9Eqjj1WuYnOYFTmCDIf0+y1jUDhaDXWLOhUgJOh3EwBNjSt1tDQgzLISXmA/Fw2aZ6pAQ==","signature_status":"signed_v1","signed_at":"2026-07-05T04:44:32.390892Z","signed_message":"canonical_sha256_bytes"},"source_id":"2207.13883","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f75c140266ed45bfb7d5f444596f750e21a401d1ac06c2d7ecf723e49860959b","sha256:da74b2f0c845a000914e1b31545a3aff7b28177145eb0e2f7d11557f7ca1488e"],"state_sha256":"1ef2ffe1cd2869b764d385aa01b35fe4f8a6c936e5b91d5e5d9ce01fa09372b5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6Vs/3XSWuBmUlp+ib8gNsov5Gu2ltIQuEsO7XPibXEH3Btea9Z0ScPJfbO5tcCVaiE9PP8TDdhoHFIF+iH3ZBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-12T21:04:21.845564Z","bundle_sha256":"d1a97f1a4a15b7d19a78cd84f644883ffbe40e674ce35b0677c80cabfd1dfd45"}}