{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:LSFUTZACE4JIBBHXC3YHKVOET5","short_pith_number":"pith:LSFUTZAC","canonical_record":{"source":{"id":"1907.11087","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.space-ph","submitted_at":"2019-07-24T12:11:08Z","cross_cats_sorted":["astro-ph.EP"],"title_canon_sha256":"62ead28d946860daa247c276d206d0e287a1b26fb3812690aa0e7ce44bcea98a","abstract_canon_sha256":"3fc7b9a660958575b15d1b9bee28453f3c0113116263307e193ca96799fdd4d5"},"schema_version":"1.0"},"canonical_sha256":"5c8b49e40227128084f716f07555c49f65f4e828b6918219c4075e940f049f68","source":{"kind":"arxiv","id":"1907.11087","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.11087","created_at":"2026-07-05T00:53:50Z"},{"alias_kind":"arxiv_version","alias_value":"1907.11087v3","created_at":"2026-07-05T00:53:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.11087","created_at":"2026-07-05T00:53:50Z"},{"alias_kind":"pith_short_12","alias_value":"LSFUTZACE4JI","created_at":"2026-07-05T00:53:50Z"},{"alias_kind":"pith_short_16","alias_value":"LSFUTZACE4JIBBHX","created_at":"2026-07-05T00:53:50Z"},{"alias_kind":"pith_short_8","alias_value":"LSFUTZAC","created_at":"2026-07-05T00:53:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:LSFUTZACE4JIBBHXC3YHKVOET5","target":"record","payload":{"canonical_record":{"source":{"id":"1907.11087","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.space-ph","submitted_at":"2019-07-24T12:11:08Z","cross_cats_sorted":["astro-ph.EP"],"title_canon_sha256":"62ead28d946860daa247c276d206d0e287a1b26fb3812690aa0e7ce44bcea98a","abstract_canon_sha256":"3fc7b9a660958575b15d1b9bee28453f3c0113116263307e193ca96799fdd4d5"},"schema_version":"1.0"},"canonical_sha256":"5c8b49e40227128084f716f07555c49f65f4e828b6918219c4075e940f049f68","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:53:50.801053Z","signature_b64":"hW86LIkPch2SUnQQ+ui3Pm2y1wZQa1QLZ1oEPWZ95uuHbpkCiyGnHhXXEm3R0syn6vtgBUYmmYG4gRuX19ltAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5c8b49e40227128084f716f07555c49f65f4e828b6918219c4075e940f049f68","last_reissued_at":"2026-07-05T00:53:50.800568Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:53:50.800568Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1907.11087","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T00:53:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"thq7jU7o/MMPKfJYqxFvK0ROXQaUia9opSGuM7WXcIeOIMC6kZLAGmiteev5FWWe/+a7QmxSXfrsN+LKZc+rAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T15:26:35.684267Z"},"content_sha256":"060c97f62e72ecac78cb3bee2b16146c85d84535819f7f32064bc499ba9154ff","schema_version":"1.0","event_id":"sha256:060c97f62e72ecac78cb3bee2b16146c85d84535819f7f32064bc499ba9154ff"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:LSFUTZACE4JIBBHXC3YHKVOET5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Enhanced Kinetic Impactor for Deflecting Large Potentially Hazardous Asteroids via Maneuvering Space Rocks","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.EP"],"primary_cat":"physics.space-ph","authors_text":"Binghong Zhou, Mingtao Li, Wei Zheng, Yirui Wang, Youliang Wang","submitted_at":"2019-07-24T12:11:08Z","abstract_excerpt":"Asteroid impacts pose a major threat to all life on Earth. The age of the dinosaurs was abruptly ended by a 10-km-diameter asteroid. Currently, a nuclear device is the only means of deflecting large Potentially Hazardous Asteroids (PHAs) away from an Earth-impacting trajectory. The Enhanced Kinetic Impactor (EKI) concept is proposed to deflect large PHAs via maneuvering space rocks. First, an unmanned spacecraft is launched to rendezvous with an intermediate Near-Earth Asteroid (NEA). Then, more than one hundred tons of rocks are collected from the NEA as the EKI. The NEA can also be captured "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.11087","kind":"arxiv","version":3},"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/1907.11087/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":"2026-07-05T00:53:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WISfLRP2pF/24a3UxSdpTAelcKosFvFsdLu2OPLP/4jUNwLzUjDtKesnKyFvz5gsnaS+xxhbac7mN6Rlz5nTAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T15:26:35.684660Z"},"content_sha256":"eb784efff83d15b68c2592f3b65424a56aa456a93e0e08ced533aa7b72efb0fc","schema_version":"1.0","event_id":"sha256:eb784efff83d15b68c2592f3b65424a56aa456a93e0e08ced533aa7b72efb0fc"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LSFUTZACE4JIBBHXC3YHKVOET5/bundle.json","state_url":"https://pith.science/pith/LSFUTZACE4JIBBHXC3YHKVOET5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LSFUTZACE4JIBBHXC3YHKVOET5/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":"2026-07-07T15:26:35Z","links":{"resolver":"https://pith.science/pith/LSFUTZACE4JIBBHXC3YHKVOET5","bundle":"https://pith.science/pith/LSFUTZACE4JIBBHXC3YHKVOET5/bundle.json","state":"https://pith.science/pith/LSFUTZACE4JIBBHXC3YHKVOET5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LSFUTZACE4JIBBHXC3YHKVOET5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:LSFUTZACE4JIBBHXC3YHKVOET5","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":"3fc7b9a660958575b15d1b9bee28453f3c0113116263307e193ca96799fdd4d5","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.space-ph","submitted_at":"2019-07-24T12:11:08Z","title_canon_sha256":"62ead28d946860daa247c276d206d0e287a1b26fb3812690aa0e7ce44bcea98a"},"schema_version":"1.0","source":{"id":"1907.11087","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.11087","created_at":"2026-07-05T00:53:50Z"},{"alias_kind":"arxiv_version","alias_value":"1907.11087v3","created_at":"2026-07-05T00:53:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.11087","created_at":"2026-07-05T00:53:50Z"},{"alias_kind":"pith_short_12","alias_value":"LSFUTZACE4JI","created_at":"2026-07-05T00:53:50Z"},{"alias_kind":"pith_short_16","alias_value":"LSFUTZACE4JIBBHX","created_at":"2026-07-05T00:53:50Z"},{"alias_kind":"pith_short_8","alias_value":"LSFUTZAC","created_at":"2026-07-05T00:53:50Z"}],"graph_snapshots":[{"event_id":"sha256:eb784efff83d15b68c2592f3b65424a56aa456a93e0e08ced533aa7b72efb0fc","target":"graph","created_at":"2026-07-05T00:53:50Z","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/1907.11087/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 Earth. The age of the dinosaurs was abruptly ended by a 10-km-diameter asteroid. Currently, a nuclear device is the only means of deflecting large Potentially Hazardous Asteroids (PHAs) away from an Earth-impacting trajectory. The Enhanced Kinetic Impactor (EKI) concept is proposed to deflect large PHAs via maneuvering space rocks. First, an unmanned spacecraft is launched to rendezvous with an intermediate Near-Earth Asteroid (NEA). Then, more than one hundred tons of rocks are collected from the NEA as the EKI. The NEA can also be captured ","authors_text":"Binghong Zhou, Mingtao Li, Wei Zheng, Yirui Wang, Youliang Wang","cross_cats":["astro-ph.EP"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.space-ph","submitted_at":"2019-07-24T12:11:08Z","title":"Enhanced Kinetic Impactor for Deflecting Large Potentially Hazardous Asteroids via Maneuvering Space Rocks"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.11087","kind":"arxiv","version":3},"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":"sha256:060c97f62e72ecac78cb3bee2b16146c85d84535819f7f32064bc499ba9154ff","target":"record","created_at":"2026-07-05T00:53:50Z","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":"3fc7b9a660958575b15d1b9bee28453f3c0113116263307e193ca96799fdd4d5","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.space-ph","submitted_at":"2019-07-24T12:11:08Z","title_canon_sha256":"62ead28d946860daa247c276d206d0e287a1b26fb3812690aa0e7ce44bcea98a"},"schema_version":"1.0","source":{"id":"1907.11087","kind":"arxiv","version":3}},"canonical_sha256":"5c8b49e40227128084f716f07555c49f65f4e828b6918219c4075e940f049f68","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5c8b49e40227128084f716f07555c49f65f4e828b6918219c4075e940f049f68","first_computed_at":"2026-07-05T00:53:50.800568Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:53:50.800568Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"hW86LIkPch2SUnQQ+ui3Pm2y1wZQa1QLZ1oEPWZ95uuHbpkCiyGnHhXXEm3R0syn6vtgBUYmmYG4gRuX19ltAg==","signature_status":"signed_v1","signed_at":"2026-07-05T00:53:50.801053Z","signed_message":"canonical_sha256_bytes"},"source_id":"1907.11087","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:060c97f62e72ecac78cb3bee2b16146c85d84535819f7f32064bc499ba9154ff","sha256:eb784efff83d15b68c2592f3b65424a56aa456a93e0e08ced533aa7b72efb0fc"],"state_sha256":"c1e8a094511e305dc910e48c05015917a68ba6ed9a6eba904de0c56e7dd43a63"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sftRyb2rV5uLDTM4PuoaEOV/hKDNLX9KtMBOTJ3B2zvUX5H4GzjYDyXuvq+pxFzZrE48Dxh5qGc7pzQe2bVpCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T15:26:35.686695Z","bundle_sha256":"a0473b2f807b4920a492c9807dace9dad77051faf0a7da009b782d06e9e3553c"}}