{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:COIDEFXISGK5F53IZBC7WQICSS","short_pith_number":"pith:COIDEFXI","canonical_record":{"source":{"id":"2009.06495","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2020-09-14T14:58:12Z","cross_cats_sorted":["astro-ph.EP"],"title_canon_sha256":"ffd0b3e0222c5a7104f72261f8f4cd1fc529b39209cfac501e4441f5b8a7b081","abstract_canon_sha256":"9564bb74df7a2d8d19c98dcbe3fe90ea25996c9bf12a5fec8e608e6c9c1ced34"},"schema_version":"1.0"},"canonical_sha256":"13903216e89195d2f768c845fb410294a95866a24b20d4339077da846a97177a","source":{"kind":"arxiv","id":"2009.06495","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2009.06495","created_at":"2026-07-05T02:55:32Z"},{"alias_kind":"arxiv_version","alias_value":"2009.06495v1","created_at":"2026-07-05T02:55:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2009.06495","created_at":"2026-07-05T02:55:32Z"},{"alias_kind":"pith_short_12","alias_value":"COIDEFXISGK5","created_at":"2026-07-05T02:55:32Z"},{"alias_kind":"pith_short_16","alias_value":"COIDEFXISGK5F53I","created_at":"2026-07-05T02:55:32Z"},{"alias_kind":"pith_short_8","alias_value":"COIDEFXI","created_at":"2026-07-05T02:55:32Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:COIDEFXISGK5F53IZBC7WQICSS","target":"record","payload":{"canonical_record":{"source":{"id":"2009.06495","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2020-09-14T14:58:12Z","cross_cats_sorted":["astro-ph.EP"],"title_canon_sha256":"ffd0b3e0222c5a7104f72261f8f4cd1fc529b39209cfac501e4441f5b8a7b081","abstract_canon_sha256":"9564bb74df7a2d8d19c98dcbe3fe90ea25996c9bf12a5fec8e608e6c9c1ced34"},"schema_version":"1.0"},"canonical_sha256":"13903216e89195d2f768c845fb410294a95866a24b20d4339077da846a97177a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:55:32.337081Z","signature_b64":"L68B+EiljwBUoLYuK9UUOrmjoNwYShn0dF9FzvmP6Z8Jw6b3hsxtkLkY0J3zOFyn5HmjFT8f1pVd1MQn4R/9Bg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"13903216e89195d2f768c845fb410294a95866a24b20d4339077da846a97177a","last_reissued_at":"2026-07-05T02:55:32.336715Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:55:32.336715Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2009.06495","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":"2026-07-05T02:55:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DZ94MOd+a3Z+9Bwlx59+mysQ+ToqncgAQRWHUfgUCqGISX/qgUbRzYQrGXvykI5gin19rc/Ybk9Z9fq/C/4tAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-16T00:59:12.040848Z"},"content_sha256":"793ce47659a3153ed9d112cd788329254071cb19ad5f832f1f7f522d9a1dc98f","schema_version":"1.0","event_id":"sha256:793ce47659a3153ed9d112cd788329254071cb19ad5f832f1f7f522d9a1dc98f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:COIDEFXISGK5F53IZBC7WQICSS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Assembled Kinetic Impactor for Deflecting Asteroids via Combining the Spacecraft with the Launch Vehicle Final Stage","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.EP"],"primary_cat":"astro-ph.IM","authors_text":"Binghong Zhou, Chuankui Wang, Jianming Wang, Mingtao Li, Yirui Wang, Zizheng Gong","submitted_at":"2020-09-14T14:58:12Z","abstract_excerpt":"Asteroid Impacts pose a major threat to all life on the Earth. Deflecting the asteroid from the impact trajectory is an important way to mitigate the threat. A kinetic impactor remains to be the most feasible method to deflect the asteroid. However, due to the constraint of the launch capability, an impactor with the limited mass can only produce a very limited amount of velocity increment for the asteroid. In order to improve the deflection efficiency of the kinetic impactor strategy, this paper proposed a new concept called the Assembled Kinetic Impactor (AKI), which is combining the spacecr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2009.06495","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2009.06495/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":"2026-07-05T02:55:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XCq/Nsi/YvaooNv2LcnlU+xyTowc7qFhCN/+CTAl53pa5ZRQdGXI1se9nhimwqkkSqpaLkm8y1qLGsnH6/mHCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-16T00:59:12.041222Z"},"content_sha256":"a2f338c39565026a00bab16a09acd992377fbd39aa34ca9d6a6183d3bb586506","schema_version":"1.0","event_id":"sha256:a2f338c39565026a00bab16a09acd992377fbd39aa34ca9d6a6183d3bb586506"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/COIDEFXISGK5F53IZBC7WQICSS/bundle.json","state_url":"https://pith.science/pith/COIDEFXISGK5F53IZBC7WQICSS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/COIDEFXISGK5F53IZBC7WQICSS/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":"2026-07-16T00:59:12Z","links":{"resolver":"https://pith.science/pith/COIDEFXISGK5F53IZBC7WQICSS","bundle":"https://pith.science/pith/COIDEFXISGK5F53IZBC7WQICSS/bundle.json","state":"https://pith.science/pith/COIDEFXISGK5F53IZBC7WQICSS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/COIDEFXISGK5F53IZBC7WQICSS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:COIDEFXISGK5F53IZBC7WQICSS","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":"9564bb74df7a2d8d19c98dcbe3fe90ea25996c9bf12a5fec8e608e6c9c1ced34","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2020-09-14T14:58:12Z","title_canon_sha256":"ffd0b3e0222c5a7104f72261f8f4cd1fc529b39209cfac501e4441f5b8a7b081"},"schema_version":"1.0","source":{"id":"2009.06495","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2009.06495","created_at":"2026-07-05T02:55:32Z"},{"alias_kind":"arxiv_version","alias_value":"2009.06495v1","created_at":"2026-07-05T02:55:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2009.06495","created_at":"2026-07-05T02:55:32Z"},{"alias_kind":"pith_short_12","alias_value":"COIDEFXISGK5","created_at":"2026-07-05T02:55:32Z"},{"alias_kind":"pith_short_16","alias_value":"COIDEFXISGK5F53I","created_at":"2026-07-05T02:55:32Z"},{"alias_kind":"pith_short_8","alias_value":"COIDEFXI","created_at":"2026-07-05T02:55:32Z"}],"graph_snapshots":[{"event_id":"sha256:a2f338c39565026a00bab16a09acd992377fbd39aa34ca9d6a6183d3bb586506","target":"graph","created_at":"2026-07-05T02:55:32Z","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/2009.06495/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Asteroid Impacts pose a major threat to all life on the Earth. Deflecting the asteroid from the impact trajectory is an important way to mitigate the threat. A kinetic impactor remains to be the most feasible method to deflect the asteroid. However, due to the constraint of the launch capability, an impactor with the limited mass can only produce a very limited amount of velocity increment for the asteroid. In order to improve the deflection efficiency of the kinetic impactor strategy, this paper proposed a new concept called the Assembled Kinetic Impactor (AKI), which is combining the spacecr","authors_text":"Binghong Zhou, Chuankui Wang, Jianming Wang, Mingtao Li, Yirui Wang, Zizheng Gong","cross_cats":["astro-ph.EP"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2020-09-14T14:58:12Z","title":"Assembled Kinetic Impactor for Deflecting Asteroids via Combining the Spacecraft with the Launch Vehicle Final Stage"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2009.06495","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":"sha256:793ce47659a3153ed9d112cd788329254071cb19ad5f832f1f7f522d9a1dc98f","target":"record","created_at":"2026-07-05T02:55:32Z","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":"9564bb74df7a2d8d19c98dcbe3fe90ea25996c9bf12a5fec8e608e6c9c1ced34","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2020-09-14T14:58:12Z","title_canon_sha256":"ffd0b3e0222c5a7104f72261f8f4cd1fc529b39209cfac501e4441f5b8a7b081"},"schema_version":"1.0","source":{"id":"2009.06495","kind":"arxiv","version":1}},"canonical_sha256":"13903216e89195d2f768c845fb410294a95866a24b20d4339077da846a97177a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"13903216e89195d2f768c845fb410294a95866a24b20d4339077da846a97177a","first_computed_at":"2026-07-05T02:55:32.336715Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:55:32.336715Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"L68B+EiljwBUoLYuK9UUOrmjoNwYShn0dF9FzvmP6Z8Jw6b3hsxtkLkY0J3zOFyn5HmjFT8f1pVd1MQn4R/9Bg==","signature_status":"signed_v1","signed_at":"2026-07-05T02:55:32.337081Z","signed_message":"canonical_sha256_bytes"},"source_id":"2009.06495","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:793ce47659a3153ed9d112cd788329254071cb19ad5f832f1f7f522d9a1dc98f","sha256:a2f338c39565026a00bab16a09acd992377fbd39aa34ca9d6a6183d3bb586506"],"state_sha256":"8b5e013a3222af97191af309b0463c9368b9b927a4e0e48df76a79e47d7ba7e5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1i+PqqZuw4D8t4DiyhVOF0JWIq5ndsOdKxpWtHKgfp3fBigweCR/U0ukyfAp8bWqkcQSaSs0a23AXZZ0idctBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-16T00:59:12.044195Z","bundle_sha256":"0aaa3aeba5b59631389e8cc71457f2f7dcf55e8aa5c89214b173f1ea34bb4945"}}