{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:ZWHLDFHIQ3ONHTKJY3OHGQ6NB2","short_pith_number":"pith:ZWHLDFHI","canonical_record":{"source":{"id":"1701.01742","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-01-06T19:42:44Z","cross_cats_sorted":["cs.SY"],"title_canon_sha256":"02e6aee3af1cfd70ac89f9907f4ef6c06917dbb21aa192ce4dc2665b5d053d88","abstract_canon_sha256":"7036ebd2c814e3040dcd824941c21449a5ca27f4a2bb1a080da0a3bfa6db2ce3"},"schema_version":"1.0"},"canonical_sha256":"cd8eb194e886dcd3cd49c6dc7343cd0e85178cb38f047a4f0ebed320a91a5ab1","source":{"kind":"arxiv","id":"1701.01742","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1701.01742","created_at":"2026-05-18T00:52:03Z"},{"alias_kind":"arxiv_version","alias_value":"1701.01742v1","created_at":"2026-05-18T00:52:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1701.01742","created_at":"2026-05-18T00:52:03Z"},{"alias_kind":"pith_short_12","alias_value":"ZWHLDFHIQ3ON","created_at":"2026-05-18T12:31:59Z"},{"alias_kind":"pith_short_16","alias_value":"ZWHLDFHIQ3ONHTKJ","created_at":"2026-05-18T12:31:59Z"},{"alias_kind":"pith_short_8","alias_value":"ZWHLDFHI","created_at":"2026-05-18T12:31:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:ZWHLDFHIQ3ONHTKJY3OHGQ6NB2","target":"record","payload":{"canonical_record":{"source":{"id":"1701.01742","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-01-06T19:42:44Z","cross_cats_sorted":["cs.SY"],"title_canon_sha256":"02e6aee3af1cfd70ac89f9907f4ef6c06917dbb21aa192ce4dc2665b5d053d88","abstract_canon_sha256":"7036ebd2c814e3040dcd824941c21449a5ca27f4a2bb1a080da0a3bfa6db2ce3"},"schema_version":"1.0"},"canonical_sha256":"cd8eb194e886dcd3cd49c6dc7343cd0e85178cb38f047a4f0ebed320a91a5ab1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:52:03.592213Z","signature_b64":"sskTGNptd0XtlhSiMX7SespTImrdq/KKW8Awl0XZIQDxyI9nQjVt/CBQCUiYtyJ5lNMMo3QXAhdybIVKwZaIBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cd8eb194e886dcd3cd49c6dc7343cd0e85178cb38f047a4f0ebed320a91a5ab1","last_reissued_at":"2026-05-18T00:52:03.591648Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:52:03.591648Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1701.01742","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":"2026-05-18T00:52:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jVqoRx4dLlaOiijYBdrW6hpn/AZ8xaT8FVZCr8Cze7NAtIQUxws/eUPWU18MeyfhPGO2dNK6YpFshtTDIs9sDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T11:59:38.218813Z"},"content_sha256":"0887fc88c8e830073f1d3c57317eff76d6a1eda09465c33f2a3f9c4bf740b4c7","schema_version":"1.0","event_id":"sha256:0887fc88c8e830073f1d3c57317eff76d6a1eda09465c33f2a3f9c4bf740b4c7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:ZWHLDFHIQ3ONHTKJY3OHGQ6NB2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Automated Design of CubeSats and Small Spacecrafts","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.SY"],"primary_cat":"astro-ph.IM","authors_text":"Himangshu Kalita, Jekan Thangavelautham","submitted_at":"2017-01-06T19:42:44Z","abstract_excerpt":"The miniaturization of electronics, sensors and actuators has enabled the growing use of CubeSats and sub-20 kg spacecraft. Their reduced mass and volume has the potential to translate into significant reductions in required propellant and launch mass for interplanetary missions, earth observation and for astrophysics applications. There is an important need to optimize the design of these spacecraft to better ascertain their maximal capabilities by finding optimized solution, where mass, volume and power is a premium. Current spacecraft design methods require a team of experts, who use their "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1701.01742","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":"2026-05-18T00:52:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lfJTaZLzWZVzdrd6taU5ETcB+mw81XcMLOx+U67H8Jf8yv9KGqvArIVZdMneayebu1lAxUT8dwRiiLIlFZczAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T11:59:38.219487Z"},"content_sha256":"fbe4310166bb170279ea6e2c7e732ca99fd84aba2af1af0bdc5acef00b371f4c","schema_version":"1.0","event_id":"sha256:fbe4310166bb170279ea6e2c7e732ca99fd84aba2af1af0bdc5acef00b371f4c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZWHLDFHIQ3ONHTKJY3OHGQ6NB2/bundle.json","state_url":"https://pith.science/pith/ZWHLDFHIQ3ONHTKJY3OHGQ6NB2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZWHLDFHIQ3ONHTKJY3OHGQ6NB2/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":"2026-06-06T11:59:38Z","links":{"resolver":"https://pith.science/pith/ZWHLDFHIQ3ONHTKJY3OHGQ6NB2","bundle":"https://pith.science/pith/ZWHLDFHIQ3ONHTKJY3OHGQ6NB2/bundle.json","state":"https://pith.science/pith/ZWHLDFHIQ3ONHTKJY3OHGQ6NB2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZWHLDFHIQ3ONHTKJY3OHGQ6NB2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:ZWHLDFHIQ3ONHTKJY3OHGQ6NB2","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":"7036ebd2c814e3040dcd824941c21449a5ca27f4a2bb1a080da0a3bfa6db2ce3","cross_cats_sorted":["cs.SY"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-01-06T19:42:44Z","title_canon_sha256":"02e6aee3af1cfd70ac89f9907f4ef6c06917dbb21aa192ce4dc2665b5d053d88"},"schema_version":"1.0","source":{"id":"1701.01742","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1701.01742","created_at":"2026-05-18T00:52:03Z"},{"alias_kind":"arxiv_version","alias_value":"1701.01742v1","created_at":"2026-05-18T00:52:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1701.01742","created_at":"2026-05-18T00:52:03Z"},{"alias_kind":"pith_short_12","alias_value":"ZWHLDFHIQ3ON","created_at":"2026-05-18T12:31:59Z"},{"alias_kind":"pith_short_16","alias_value":"ZWHLDFHIQ3ONHTKJ","created_at":"2026-05-18T12:31:59Z"},{"alias_kind":"pith_short_8","alias_value":"ZWHLDFHI","created_at":"2026-05-18T12:31:59Z"}],"graph_snapshots":[{"event_id":"sha256:fbe4310166bb170279ea6e2c7e732ca99fd84aba2af1af0bdc5acef00b371f4c","target":"graph","created_at":"2026-05-18T00:52:03Z","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":"The miniaturization of electronics, sensors and actuators has enabled the growing use of CubeSats and sub-20 kg spacecraft. Their reduced mass and volume has the potential to translate into significant reductions in required propellant and launch mass for interplanetary missions, earth observation and for astrophysics applications. There is an important need to optimize the design of these spacecraft to better ascertain their maximal capabilities by finding optimized solution, where mass, volume and power is a premium. Current spacecraft design methods require a team of experts, who use their ","authors_text":"Himangshu Kalita, Jekan Thangavelautham","cross_cats":["cs.SY"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-01-06T19:42:44Z","title":"Automated Design of CubeSats and Small Spacecrafts"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1701.01742","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":"sha256:0887fc88c8e830073f1d3c57317eff76d6a1eda09465c33f2a3f9c4bf740b4c7","target":"record","created_at":"2026-05-18T00:52:03Z","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":"7036ebd2c814e3040dcd824941c21449a5ca27f4a2bb1a080da0a3bfa6db2ce3","cross_cats_sorted":["cs.SY"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-01-06T19:42:44Z","title_canon_sha256":"02e6aee3af1cfd70ac89f9907f4ef6c06917dbb21aa192ce4dc2665b5d053d88"},"schema_version":"1.0","source":{"id":"1701.01742","kind":"arxiv","version":1}},"canonical_sha256":"cd8eb194e886dcd3cd49c6dc7343cd0e85178cb38f047a4f0ebed320a91a5ab1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cd8eb194e886dcd3cd49c6dc7343cd0e85178cb38f047a4f0ebed320a91a5ab1","first_computed_at":"2026-05-18T00:52:03.591648Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:52:03.591648Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"sskTGNptd0XtlhSiMX7SespTImrdq/KKW8Awl0XZIQDxyI9nQjVt/CBQCUiYtyJ5lNMMo3QXAhdybIVKwZaIBw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:52:03.592213Z","signed_message":"canonical_sha256_bytes"},"source_id":"1701.01742","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0887fc88c8e830073f1d3c57317eff76d6a1eda09465c33f2a3f9c4bf740b4c7","sha256:fbe4310166bb170279ea6e2c7e732ca99fd84aba2af1af0bdc5acef00b371f4c"],"state_sha256":"7f762bccc5cc2e9af8d04f69d75c3d923b84ab64f6336dfb3fdebf8a024f59a0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YUrfJMSYGKnVvf/1F4bnReo0OvU5C8LFht6rOzOAjbTscWlki5r2Wl1EqqeR8/zY3idf5BS3vNqtUganV4OFBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-06T11:59:38.223796Z","bundle_sha256":"9c698fa1cc3360c07ea2fd410a6aabe37e8cda561a73e4227f1c3d3018d3cc76"}}