{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:APNKRZ2MW7AYGPRMR7TB76TL2R","short_pith_number":"pith:APNKRZ2M","canonical_record":{"source":{"id":"1806.05913","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2018-06-15T11:35:32Z","cross_cats_sorted":["physics.ins-det"],"title_canon_sha256":"39fc31d3ddf234b5ec16f5619962fe8e20c21720feb9e021c4a22c336393a85f","abstract_canon_sha256":"849e97dcb84b29418bbbbcbe7d829d999d581c23af6a9e2cca972acfea871323"},"schema_version":"1.0"},"canonical_sha256":"03daa8e74cb7c1833e2c8fe61ffa6bd449d6abb275336374c3e9d9d7a618071e","source":{"kind":"arxiv","id":"1806.05913","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1806.05913","created_at":"2026-05-18T00:13:09Z"},{"alias_kind":"arxiv_version","alias_value":"1806.05913v1","created_at":"2026-05-18T00:13:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1806.05913","created_at":"2026-05-18T00:13:09Z"},{"alias_kind":"pith_short_12","alias_value":"APNKRZ2MW7AY","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_16","alias_value":"APNKRZ2MW7AYGPRM","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_8","alias_value":"APNKRZ2M","created_at":"2026-05-18T12:32:13Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:APNKRZ2MW7AYGPRMR7TB76TL2R","target":"record","payload":{"canonical_record":{"source":{"id":"1806.05913","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2018-06-15T11:35:32Z","cross_cats_sorted":["physics.ins-det"],"title_canon_sha256":"39fc31d3ddf234b5ec16f5619962fe8e20c21720feb9e021c4a22c336393a85f","abstract_canon_sha256":"849e97dcb84b29418bbbbcbe7d829d999d581c23af6a9e2cca972acfea871323"},"schema_version":"1.0"},"canonical_sha256":"03daa8e74cb7c1833e2c8fe61ffa6bd449d6abb275336374c3e9d9d7a618071e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:13:09.067399Z","signature_b64":"T+LBQlwfPz/U/CaBH4VZZIqoCFK3zxxpgYamlOX0JB5xi1auqE5IvbTZE0GzZaWMWvsXnueTSvjMSHaaMbz9AA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"03daa8e74cb7c1833e2c8fe61ffa6bd449d6abb275336374c3e9d9d7a618071e","last_reissued_at":"2026-05-18T00:13:09.066634Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:13:09.066634Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1806.05913","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":"2026-05-18T00:13:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"U78debVMe5yINmjzaCKKddJdY0MRRutxN0LmOIs58JgtLDwvhFGX6OMz4aRa/HouRGyzZSJQmo//2SwpOKHeBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T20:27:30.730472Z"},"content_sha256":"cbf6d6f00bae4d7518b38c89a6168b0cac029d1b12d4365a048f8269c1b5d590","schema_version":"1.0","event_id":"sha256:cbf6d6f00bae4d7518b38c89a6168b0cac029d1b12d4365a048f8269c1b5d590"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:APNKRZ2MW7AYGPRMR7TB76TL2R","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Design of a CubeSat Payload to Test a Magnetic Measurement System for Space-borne Gravitational Wave Detectors","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.ins-det"],"primary_cat":"astro-ph.IM","authors_text":"Ignacio Mateos, Juan Ramos-Castro, Rub\\'en S\\'anchez-M\\'inguez","submitted_at":"2018-06-15T11:35:32Z","abstract_excerpt":"Space observatories for gravitational radiation such as LISA are equipped with dedicated on-board instrumentation capable of measuring magnetic fields with low-noise conditions at millihertz frequencies. The reason is that the core scientific payload can only operate successfully if the magnetic environment meets certain strict low-frequency requirements. With this purpose, a simplified version of the proposed magnetic measurement system for LISA has been developed for a six-unit CubeSat, which will make it possible to improve the technology readiness level (TRL) of the instrument. The special"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1806.05913","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":"2026-05-18T00:13:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EkIl1Xz/DIPIx4zgTCAYYe3MrzDyTaCg8sQl1AYgAfdutUJVqw+TMjREF5g9KT2fGqWHwp9HIBfEcnkdI/ikAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T20:27:30.730820Z"},"content_sha256":"aad4adf4408a9338facbaa43e0eecaf3b8aef70025e0b95009635108b82380d5","schema_version":"1.0","event_id":"sha256:aad4adf4408a9338facbaa43e0eecaf3b8aef70025e0b95009635108b82380d5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/APNKRZ2MW7AYGPRMR7TB76TL2R/bundle.json","state_url":"https://pith.science/pith/APNKRZ2MW7AYGPRMR7TB76TL2R/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/APNKRZ2MW7AYGPRMR7TB76TL2R/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":"2026-06-04T20:27:30Z","links":{"resolver":"https://pith.science/pith/APNKRZ2MW7AYGPRMR7TB76TL2R","bundle":"https://pith.science/pith/APNKRZ2MW7AYGPRMR7TB76TL2R/bundle.json","state":"https://pith.science/pith/APNKRZ2MW7AYGPRMR7TB76TL2R/state.json","well_known_bundle":"https://pith.science/.well-known/pith/APNKRZ2MW7AYGPRMR7TB76TL2R/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:APNKRZ2MW7AYGPRMR7TB76TL2R","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":"849e97dcb84b29418bbbbcbe7d829d999d581c23af6a9e2cca972acfea871323","cross_cats_sorted":["physics.ins-det"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2018-06-15T11:35:32Z","title_canon_sha256":"39fc31d3ddf234b5ec16f5619962fe8e20c21720feb9e021c4a22c336393a85f"},"schema_version":"1.0","source":{"id":"1806.05913","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1806.05913","created_at":"2026-05-18T00:13:09Z"},{"alias_kind":"arxiv_version","alias_value":"1806.05913v1","created_at":"2026-05-18T00:13:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1806.05913","created_at":"2026-05-18T00:13:09Z"},{"alias_kind":"pith_short_12","alias_value":"APNKRZ2MW7AY","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_16","alias_value":"APNKRZ2MW7AYGPRM","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_8","alias_value":"APNKRZ2M","created_at":"2026-05-18T12:32:13Z"}],"graph_snapshots":[{"event_id":"sha256:aad4adf4408a9338facbaa43e0eecaf3b8aef70025e0b95009635108b82380d5","target":"graph","created_at":"2026-05-18T00:13:09Z","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":"Space observatories for gravitational radiation such as LISA are equipped with dedicated on-board instrumentation capable of measuring magnetic fields with low-noise conditions at millihertz frequencies. The reason is that the core scientific payload can only operate successfully if the magnetic environment meets certain strict low-frequency requirements. With this purpose, a simplified version of the proposed magnetic measurement system for LISA has been developed for a six-unit CubeSat, which will make it possible to improve the technology readiness level (TRL) of the instrument. The special","authors_text":"Ignacio Mateos, Juan Ramos-Castro, Rub\\'en S\\'anchez-M\\'inguez","cross_cats":["physics.ins-det"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2018-06-15T11:35:32Z","title":"Design of a CubeSat Payload to Test a Magnetic Measurement System for Space-borne Gravitational Wave Detectors"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1806.05913","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:cbf6d6f00bae4d7518b38c89a6168b0cac029d1b12d4365a048f8269c1b5d590","target":"record","created_at":"2026-05-18T00:13:09Z","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":"849e97dcb84b29418bbbbcbe7d829d999d581c23af6a9e2cca972acfea871323","cross_cats_sorted":["physics.ins-det"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2018-06-15T11:35:32Z","title_canon_sha256":"39fc31d3ddf234b5ec16f5619962fe8e20c21720feb9e021c4a22c336393a85f"},"schema_version":"1.0","source":{"id":"1806.05913","kind":"arxiv","version":1}},"canonical_sha256":"03daa8e74cb7c1833e2c8fe61ffa6bd449d6abb275336374c3e9d9d7a618071e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"03daa8e74cb7c1833e2c8fe61ffa6bd449d6abb275336374c3e9d9d7a618071e","first_computed_at":"2026-05-18T00:13:09.066634Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:13:09.066634Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"T+LBQlwfPz/U/CaBH4VZZIqoCFK3zxxpgYamlOX0JB5xi1auqE5IvbTZE0GzZaWMWvsXnueTSvjMSHaaMbz9AA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:13:09.067399Z","signed_message":"canonical_sha256_bytes"},"source_id":"1806.05913","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cbf6d6f00bae4d7518b38c89a6168b0cac029d1b12d4365a048f8269c1b5d590","sha256:aad4adf4408a9338facbaa43e0eecaf3b8aef70025e0b95009635108b82380d5"],"state_sha256":"852ee0e622b3b54b364f856a9a2a78c8d377af384f75caa2b8b8d6056d0f2dda"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XsH+59gmGUznIu2rK3ayq9+yh6vKEhiQb6Izay7BKaz/mzaG5tXD4VMYtR2VKZvXDILI+bai14xIVJ+9mqWEDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T20:27:30.732825Z","bundle_sha256":"0f0dcd9add64c8c47d1096e6f1997ee475e803d81026b9cec34e100a12b4f1e1"}}