{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:QJIGJDY2Z7WV6JSZ6CIKQXBTUI","short_pith_number":"pith:QJIGJDY2","canonical_record":{"source":{"id":"1910.06397","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-10-10T21:25:43Z","cross_cats_sorted":["astro-ph.EP","physics.space-ph"],"title_canon_sha256":"9fad8505b79f70b4e4be1b79beae656b4d5e601da78a49185709a3279d7dfacf","abstract_canon_sha256":"bd68c36583c1a3128df04dabebc38d53abfc896ede8c197907129200b1bae747"},"schema_version":"1.0"},"canonical_sha256":"8250648f1acfed5f2659f090a85c33a2123735ca67672cb1d5d13610bcd39912","source":{"kind":"arxiv","id":"1910.06397","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1910.06397","created_at":"2026-07-05T00:11:47Z"},{"alias_kind":"arxiv_version","alias_value":"1910.06397v1","created_at":"2026-07-05T00:11:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1910.06397","created_at":"2026-07-05T00:11:47Z"},{"alias_kind":"pith_short_12","alias_value":"QJIGJDY2Z7WV","created_at":"2026-07-05T00:11:47Z"},{"alias_kind":"pith_short_16","alias_value":"QJIGJDY2Z7WV6JSZ","created_at":"2026-07-05T00:11:47Z"},{"alias_kind":"pith_short_8","alias_value":"QJIGJDY2","created_at":"2026-07-05T00:11:47Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:QJIGJDY2Z7WV6JSZ6CIKQXBTUI","target":"record","payload":{"canonical_record":{"source":{"id":"1910.06397","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-10-10T21:25:43Z","cross_cats_sorted":["astro-ph.EP","physics.space-ph"],"title_canon_sha256":"9fad8505b79f70b4e4be1b79beae656b4d5e601da78a49185709a3279d7dfacf","abstract_canon_sha256":"bd68c36583c1a3128df04dabebc38d53abfc896ede8c197907129200b1bae747"},"schema_version":"1.0"},"canonical_sha256":"8250648f1acfed5f2659f090a85c33a2123735ca67672cb1d5d13610bcd39912","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:11:47.674973Z","signature_b64":"zAJKRFeyuz2ZyZ79nbJbh/yHy50Pp9O9qGCa8Tdu19bngmmiEIlMpU+i2vcMIf33gbZfcORiqevkdHfvMYXbDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8250648f1acfed5f2659f090a85c33a2123735ca67672cb1d5d13610bcd39912","last_reissued_at":"2026-07-05T00:11:47.674511Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:11:47.674511Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1910.06397","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":"2026-07-05T00:11:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TaMpVLZ8PvHGxCEsYbqQo4x+ips/2xY3SbfDAmvqF47LfmdOKaKw+Ivgk5chcM85gAn5Q++RV6uzMEyyRT1cBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T13:32:02.059645Z"},"content_sha256":"b9db213c2a8e80decbd3666356260fccf60948685ca1ed27da57bd03f8a9a34e","schema_version":"1.0","event_id":"sha256:b9db213c2a8e80decbd3666356260fccf60948685ca1ed27da57bd03f8a9a34e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:QJIGJDY2Z7WV6JSZ6CIKQXBTUI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Demisability and survivability sensitivity to design-for-demise techniques","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.EP","physics.space-ph"],"primary_cat":"astro-ph.IM","authors_text":"Camilla Colombo, Hugh G. Lewis, Mirko Trisolini","submitted_at":"2019-10-10T21:25:43Z","abstract_excerpt":"The paper is concerned with examining the effects that design-for-demise solutions can have not only on the demisability of components, but also on their survivability that is their capability to withstand impacts from space debris. First two models are introduced. A demisability model to predict the behaviour of spacecraft components during the atmospheric re-entry and a survivability model to assess the vulnerability of spacecraft structures against space debris impacts. Two indices that evaluate the level of demisability and survivability are also proposed. The two models are then used to s"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1910.06397","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/1910.06397/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":"2026-07-05T00:11:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uqsBapqL8i1BtuAF9PZ9kqioXYZXo6KMnwAq0ctnQhWsoKKlGoUsgvf1+4mIQnTOLxfB1THgsD3bGh1pjrBABw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T13:32:02.060010Z"},"content_sha256":"d6aaf74ea16bdaf087ecb1412da34f1d9b9ca8713e9b4cf8715dc66ce554ed2d","schema_version":"1.0","event_id":"sha256:d6aaf74ea16bdaf087ecb1412da34f1d9b9ca8713e9b4cf8715dc66ce554ed2d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QJIGJDY2Z7WV6JSZ6CIKQXBTUI/bundle.json","state_url":"https://pith.science/pith/QJIGJDY2Z7WV6JSZ6CIKQXBTUI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QJIGJDY2Z7WV6JSZ6CIKQXBTUI/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":"2026-07-06T13:32:02Z","links":{"resolver":"https://pith.science/pith/QJIGJDY2Z7WV6JSZ6CIKQXBTUI","bundle":"https://pith.science/pith/QJIGJDY2Z7WV6JSZ6CIKQXBTUI/bundle.json","state":"https://pith.science/pith/QJIGJDY2Z7WV6JSZ6CIKQXBTUI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QJIGJDY2Z7WV6JSZ6CIKQXBTUI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:QJIGJDY2Z7WV6JSZ6CIKQXBTUI","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":"bd68c36583c1a3128df04dabebc38d53abfc896ede8c197907129200b1bae747","cross_cats_sorted":["astro-ph.EP","physics.space-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-10-10T21:25:43Z","title_canon_sha256":"9fad8505b79f70b4e4be1b79beae656b4d5e601da78a49185709a3279d7dfacf"},"schema_version":"1.0","source":{"id":"1910.06397","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1910.06397","created_at":"2026-07-05T00:11:47Z"},{"alias_kind":"arxiv_version","alias_value":"1910.06397v1","created_at":"2026-07-05T00:11:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1910.06397","created_at":"2026-07-05T00:11:47Z"},{"alias_kind":"pith_short_12","alias_value":"QJIGJDY2Z7WV","created_at":"2026-07-05T00:11:47Z"},{"alias_kind":"pith_short_16","alias_value":"QJIGJDY2Z7WV6JSZ","created_at":"2026-07-05T00:11:47Z"},{"alias_kind":"pith_short_8","alias_value":"QJIGJDY2","created_at":"2026-07-05T00:11:47Z"}],"graph_snapshots":[{"event_id":"sha256:d6aaf74ea16bdaf087ecb1412da34f1d9b9ca8713e9b4cf8715dc66ce554ed2d","target":"graph","created_at":"2026-07-05T00:11:47Z","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/1910.06397/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The paper is concerned with examining the effects that design-for-demise solutions can have not only on the demisability of components, but also on their survivability that is their capability to withstand impacts from space debris. First two models are introduced. A demisability model to predict the behaviour of spacecraft components during the atmospheric re-entry and a survivability model to assess the vulnerability of spacecraft structures against space debris impacts. Two indices that evaluate the level of demisability and survivability are also proposed. The two models are then used to s","authors_text":"Camilla Colombo, Hugh G. Lewis, Mirko Trisolini","cross_cats":["astro-ph.EP","physics.space-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-10-10T21:25:43Z","title":"Demisability and survivability sensitivity to design-for-demise techniques"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1910.06397","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:b9db213c2a8e80decbd3666356260fccf60948685ca1ed27da57bd03f8a9a34e","target":"record","created_at":"2026-07-05T00:11:47Z","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":"bd68c36583c1a3128df04dabebc38d53abfc896ede8c197907129200b1bae747","cross_cats_sorted":["astro-ph.EP","physics.space-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-10-10T21:25:43Z","title_canon_sha256":"9fad8505b79f70b4e4be1b79beae656b4d5e601da78a49185709a3279d7dfacf"},"schema_version":"1.0","source":{"id":"1910.06397","kind":"arxiv","version":1}},"canonical_sha256":"8250648f1acfed5f2659f090a85c33a2123735ca67672cb1d5d13610bcd39912","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8250648f1acfed5f2659f090a85c33a2123735ca67672cb1d5d13610bcd39912","first_computed_at":"2026-07-05T00:11:47.674511Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:11:47.674511Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"zAJKRFeyuz2ZyZ79nbJbh/yHy50Pp9O9qGCa8Tdu19bngmmiEIlMpU+i2vcMIf33gbZfcORiqevkdHfvMYXbDQ==","signature_status":"signed_v1","signed_at":"2026-07-05T00:11:47.674973Z","signed_message":"canonical_sha256_bytes"},"source_id":"1910.06397","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b9db213c2a8e80decbd3666356260fccf60948685ca1ed27da57bd03f8a9a34e","sha256:d6aaf74ea16bdaf087ecb1412da34f1d9b9ca8713e9b4cf8715dc66ce554ed2d"],"state_sha256":"52e58d02f7ce041e49f99071a48c20f882b443cb3575d3d4284d3a9250a8f504"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WBDzKaNZxMHte6zs6vIND0jmIqpkgFZHdsZVmF6oO0ALoVubPFQ+3f7kV4lPEhdvW6VcAfDmbfPa+lcJAtrOAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-06T13:32:02.061956Z","bundle_sha256":"c553437cdffd52f621043345a0c689ef9d63b5641fe558b3bf2847a85381b13d"}}