{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:4O5YZ7DTQDSMQL7RK7NQO42FBX","short_pith_number":"pith:4O5YZ7DT","canonical_record":{"source":{"id":"1604.08460","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-04-28T15:20:40Z","cross_cats_sorted":["physics.ins-det"],"title_canon_sha256":"399d6a4ad7457e498eaac711c3198a62bcfdd3df03154db3bb56150640465aae","abstract_canon_sha256":"feb94c30ef3bee8fbe2f68cfb94aa009f27e2c16abe886c62ed9cd4d1c59690a"},"schema_version":"1.0"},"canonical_sha256":"e3bb8cfc7380e4c82ff157db0773450ded54ebeed76655d44c1772566ffdce72","source":{"kind":"arxiv","id":"1604.08460","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1604.08460","created_at":"2026-05-18T01:16:03Z"},{"alias_kind":"arxiv_version","alias_value":"1604.08460v1","created_at":"2026-05-18T01:16:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1604.08460","created_at":"2026-05-18T01:16:03Z"},{"alias_kind":"pith_short_12","alias_value":"4O5YZ7DTQDSM","created_at":"2026-05-18T12:29:58Z"},{"alias_kind":"pith_short_16","alias_value":"4O5YZ7DTQDSMQL7R","created_at":"2026-05-18T12:29:58Z"},{"alias_kind":"pith_short_8","alias_value":"4O5YZ7DT","created_at":"2026-05-18T12:29:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:4O5YZ7DTQDSMQL7RK7NQO42FBX","target":"record","payload":{"canonical_record":{"source":{"id":"1604.08460","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-04-28T15:20:40Z","cross_cats_sorted":["physics.ins-det"],"title_canon_sha256":"399d6a4ad7457e498eaac711c3198a62bcfdd3df03154db3bb56150640465aae","abstract_canon_sha256":"feb94c30ef3bee8fbe2f68cfb94aa009f27e2c16abe886c62ed9cd4d1c59690a"},"schema_version":"1.0"},"canonical_sha256":"e3bb8cfc7380e4c82ff157db0773450ded54ebeed76655d44c1772566ffdce72","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:16:03.906607Z","signature_b64":"FqxNmwZLN7bJdxJ+9acWOVzrR17MqVgGWlNSkZjMTVtkZe7huO0ptvNIZqgkyL5EeAWFzjaETBSiNK6KxcYkDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e3bb8cfc7380e4c82ff157db0773450ded54ebeed76655d44c1772566ffdce72","last_reissued_at":"2026-05-18T01:16:03.905837Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:16:03.905837Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1604.08460","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":"2026-05-18T01:16:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vsKHUwuJRFUvSoSjvmsK+kTE0CkLS1dQFgnQtQgIz0ClEYL/6+f42TUc+Hk6N7jcKiosxI3Bgskc7ozazPfZBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T02:10:25.161339Z"},"content_sha256":"a3e1846ef37b8e22187f972cc081d9ab12349fc6703c649219e5407cda16a29f","schema_version":"1.0","event_id":"sha256:a3e1846ef37b8e22187f972cc081d9ab12349fc6703c649219e5407cda16a29f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:4O5YZ7DTQDSMQL7RK7NQO42FBX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Low-frequency noise characterization of a magnetic field monitoring system using an anisotropic magnetoresistance","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.ins-det"],"primary_cat":"astro-ph.IM","authors_text":"A. Lobo, I. Mateos, J. Ramos-Castro","submitted_at":"2016-04-28T15:20:40Z","abstract_excerpt":"A detailed study about magnetic sensing techniques based on anisotropic magnetoresistive sensors shows that the technology is suitable for low-frequency space applications like the eLISA mission. Low noise magnetic measurements at the sub-millihertz frequencies were taken by using different electronic noise reduction techniques in the signal conditioning circuit. We found that conventional modulation techniques reversing the sensor bridge excitation do not reduce the potential $1/f$ noise of the magnetoresistors, so alternative methods such as flipping and electro-magnetic feedback are necessa"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1604.08460","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":"2026-05-18T01:16:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vrg01pSEhCKOYdhZMlHxxwVNYgYYjibudi9fUb7jjzt4TWhmG/mITVzAcjpUtNyK9539HwXdJrsvnGFhpFPKDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T02:10:25.161696Z"},"content_sha256":"5f695394b4021425269c9691ae4615fa6ed40ae2638b3185dac3fd7d45c578a1","schema_version":"1.0","event_id":"sha256:5f695394b4021425269c9691ae4615fa6ed40ae2638b3185dac3fd7d45c578a1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4O5YZ7DTQDSMQL7RK7NQO42FBX/bundle.json","state_url":"https://pith.science/pith/4O5YZ7DTQDSMQL7RK7NQO42FBX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4O5YZ7DTQDSMQL7RK7NQO42FBX/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":"2026-06-02T02:10:25Z","links":{"resolver":"https://pith.science/pith/4O5YZ7DTQDSMQL7RK7NQO42FBX","bundle":"https://pith.science/pith/4O5YZ7DTQDSMQL7RK7NQO42FBX/bundle.json","state":"https://pith.science/pith/4O5YZ7DTQDSMQL7RK7NQO42FBX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4O5YZ7DTQDSMQL7RK7NQO42FBX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:4O5YZ7DTQDSMQL7RK7NQO42FBX","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":"feb94c30ef3bee8fbe2f68cfb94aa009f27e2c16abe886c62ed9cd4d1c59690a","cross_cats_sorted":["physics.ins-det"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-04-28T15:20:40Z","title_canon_sha256":"399d6a4ad7457e498eaac711c3198a62bcfdd3df03154db3bb56150640465aae"},"schema_version":"1.0","source":{"id":"1604.08460","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1604.08460","created_at":"2026-05-18T01:16:03Z"},{"alias_kind":"arxiv_version","alias_value":"1604.08460v1","created_at":"2026-05-18T01:16:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1604.08460","created_at":"2026-05-18T01:16:03Z"},{"alias_kind":"pith_short_12","alias_value":"4O5YZ7DTQDSM","created_at":"2026-05-18T12:29:58Z"},{"alias_kind":"pith_short_16","alias_value":"4O5YZ7DTQDSMQL7R","created_at":"2026-05-18T12:29:58Z"},{"alias_kind":"pith_short_8","alias_value":"4O5YZ7DT","created_at":"2026-05-18T12:29:58Z"}],"graph_snapshots":[{"event_id":"sha256:5f695394b4021425269c9691ae4615fa6ed40ae2638b3185dac3fd7d45c578a1","target":"graph","created_at":"2026-05-18T01:16:03Z","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":"A detailed study about magnetic sensing techniques based on anisotropic magnetoresistive sensors shows that the technology is suitable for low-frequency space applications like the eLISA mission. Low noise magnetic measurements at the sub-millihertz frequencies were taken by using different electronic noise reduction techniques in the signal conditioning circuit. We found that conventional modulation techniques reversing the sensor bridge excitation do not reduce the potential $1/f$ noise of the magnetoresistors, so alternative methods such as flipping and electro-magnetic feedback are necessa","authors_text":"A. Lobo, I. Mateos, J. Ramos-Castro","cross_cats":["physics.ins-det"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-04-28T15:20:40Z","title":"Low-frequency noise characterization of a magnetic field monitoring system using an anisotropic magnetoresistance"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1604.08460","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:a3e1846ef37b8e22187f972cc081d9ab12349fc6703c649219e5407cda16a29f","target":"record","created_at":"2026-05-18T01:16:03Z","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":"feb94c30ef3bee8fbe2f68cfb94aa009f27e2c16abe886c62ed9cd4d1c59690a","cross_cats_sorted":["physics.ins-det"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-04-28T15:20:40Z","title_canon_sha256":"399d6a4ad7457e498eaac711c3198a62bcfdd3df03154db3bb56150640465aae"},"schema_version":"1.0","source":{"id":"1604.08460","kind":"arxiv","version":1}},"canonical_sha256":"e3bb8cfc7380e4c82ff157db0773450ded54ebeed76655d44c1772566ffdce72","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e3bb8cfc7380e4c82ff157db0773450ded54ebeed76655d44c1772566ffdce72","first_computed_at":"2026-05-18T01:16:03.905837Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:16:03.905837Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"FqxNmwZLN7bJdxJ+9acWOVzrR17MqVgGWlNSkZjMTVtkZe7huO0ptvNIZqgkyL5EeAWFzjaETBSiNK6KxcYkDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:16:03.906607Z","signed_message":"canonical_sha256_bytes"},"source_id":"1604.08460","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a3e1846ef37b8e22187f972cc081d9ab12349fc6703c649219e5407cda16a29f","sha256:5f695394b4021425269c9691ae4615fa6ed40ae2638b3185dac3fd7d45c578a1"],"state_sha256":"aa943dc5b27324d5d42ec3d85da76a255e5abae792b6d31579e31ff7d09c07db"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KRo2vGC4aRHFam5RtSdaVPxmRL4hzcvO4tKPPAG2aEeWG01PiuJArgIartDSQMl3qMUJT2CU4wVlZY1VUtBtBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T02:10:25.163733Z","bundle_sha256":"750067e9fefbf3b27607571bb6ef4b423beb1c7963d288afe103d414e517ae75"}}