{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:K3CB5NGBUKHF2XYGT6XNICR3YU","short_pith_number":"pith:K3CB5NGB","canonical_record":{"source":{"id":"1501.07861","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2015-01-30T17:48:48Z","cross_cats_sorted":[],"title_canon_sha256":"9dda02f8a057c2a99a0df5385a0c78a5f64fa7a1001401f9720a6599ea1a5af7","abstract_canon_sha256":"1db73aef5f64157725f230dafa1e466d666397b026b58af6b0d4e9a35da6144d"},"schema_version":"1.0"},"canonical_sha256":"56c41eb4c1a28e5d5f069faed40a3bc51b0932e387c3801475bb7d400138d2a0","source":{"kind":"arxiv","id":"1501.07861","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1501.07861","created_at":"2026-05-18T02:03:48Z"},{"alias_kind":"arxiv_version","alias_value":"1501.07861v4","created_at":"2026-05-18T02:03:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1501.07861","created_at":"2026-05-18T02:03:48Z"},{"alias_kind":"pith_short_12","alias_value":"K3CB5NGBUKHF","created_at":"2026-05-18T12:29:27Z"},{"alias_kind":"pith_short_16","alias_value":"K3CB5NGBUKHF2XYG","created_at":"2026-05-18T12:29:27Z"},{"alias_kind":"pith_short_8","alias_value":"K3CB5NGB","created_at":"2026-05-18T12:29:27Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:K3CB5NGBUKHF2XYGT6XNICR3YU","target":"record","payload":{"canonical_record":{"source":{"id":"1501.07861","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2015-01-30T17:48:48Z","cross_cats_sorted":[],"title_canon_sha256":"9dda02f8a057c2a99a0df5385a0c78a5f64fa7a1001401f9720a6599ea1a5af7","abstract_canon_sha256":"1db73aef5f64157725f230dafa1e466d666397b026b58af6b0d4e9a35da6144d"},"schema_version":"1.0"},"canonical_sha256":"56c41eb4c1a28e5d5f069faed40a3bc51b0932e387c3801475bb7d400138d2a0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:03:48.084071Z","signature_b64":"cjdKRZLmWLPuzc2SkQ0Lp/Mywf9hJLQVaY85OTgDzADC9jwbZLQ+silSCWyt1zzt8AFMtZYRZ5uXz7uJP8DGDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"56c41eb4c1a28e5d5f069faed40a3bc51b0932e387c3801475bb7d400138d2a0","last_reissued_at":"2026-05-18T02:03:48.083659Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:03:48.083659Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1501.07861","source_version":4,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:03:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ryiqvaGxxX1MmNXx67wRsIlwpaMEkkRwNvOuqT01O3VHLP0QgYp9GwAqwctdSBDWxv19f9ldXXmg+6cp8C+LBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T04:46:46.256655Z"},"content_sha256":"b5fe5e6714bc329dd1c9667fd65bb73cb7b00f38fbb7261e89791036172d517c","schema_version":"1.0","event_id":"sha256:b5fe5e6714bc329dd1c9667fd65bb73cb7b00f38fbb7261e89791036172d517c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:K3CB5NGBUKHF2XYGT6XNICR3YU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A large-scale magnetic shield with 10^6 damping at mHz frequencies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.ins-det","authors_text":"A. Schnabel, B. Niessen, B. Taubenheim, D. H. Beck, F. Kuchler, G. Petzoldt, I. Altarev, J. T. Singh, J. Voigt, K. Fierlinger, M. Bales, M. G. Marino, M. Strum, P. Fierlinger, R. Stoepler, S. Stuiber, T. Chupp, T. Lins, U. Schl\\\"apfer","submitted_at":"2015-01-30T17:48:48Z","abstract_excerpt":"We present a magnetically shielded environment with a damping factor larger than one million at the mHz frequency regime and an extremely low field and gradient over an extended volume. This extraordinary shielding performance represents an improvement of the state of the art in damping the difficult regime of very low-frequency distortions by more than an order of magnitude. This technology enables a new generation of high precision measurements in fundamental physics and metrology, including searches for new physics far beyond the reach of accelerator-based experiments. We discuss the techni"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1501.07861","kind":"arxiv","version":4},"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":"2026-05-18T02:03:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"evZR7/u2t6ZiVICU0FPL3ACNfu31kIDkHNsGU7PZJakqrdpcrt8RKmlshtJCYdowns/UajcPl2XNRdHmM4+1Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T04:46:46.256994Z"},"content_sha256":"d2e7ea2e89d07220470fa157657bf45585400e566c4b51650061d76f686f477a","schema_version":"1.0","event_id":"sha256:d2e7ea2e89d07220470fa157657bf45585400e566c4b51650061d76f686f477a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/K3CB5NGBUKHF2XYGT6XNICR3YU/bundle.json","state_url":"https://pith.science/pith/K3CB5NGBUKHF2XYGT6XNICR3YU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/K3CB5NGBUKHF2XYGT6XNICR3YU/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":"2026-07-05T04:46:46Z","links":{"resolver":"https://pith.science/pith/K3CB5NGBUKHF2XYGT6XNICR3YU","bundle":"https://pith.science/pith/K3CB5NGBUKHF2XYGT6XNICR3YU/bundle.json","state":"https://pith.science/pith/K3CB5NGBUKHF2XYGT6XNICR3YU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/K3CB5NGBUKHF2XYGT6XNICR3YU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:K3CB5NGBUKHF2XYGT6XNICR3YU","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":"1db73aef5f64157725f230dafa1e466d666397b026b58af6b0d4e9a35da6144d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2015-01-30T17:48:48Z","title_canon_sha256":"9dda02f8a057c2a99a0df5385a0c78a5f64fa7a1001401f9720a6599ea1a5af7"},"schema_version":"1.0","source":{"id":"1501.07861","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1501.07861","created_at":"2026-05-18T02:03:48Z"},{"alias_kind":"arxiv_version","alias_value":"1501.07861v4","created_at":"2026-05-18T02:03:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1501.07861","created_at":"2026-05-18T02:03:48Z"},{"alias_kind":"pith_short_12","alias_value":"K3CB5NGBUKHF","created_at":"2026-05-18T12:29:27Z"},{"alias_kind":"pith_short_16","alias_value":"K3CB5NGBUKHF2XYG","created_at":"2026-05-18T12:29:27Z"},{"alias_kind":"pith_short_8","alias_value":"K3CB5NGB","created_at":"2026-05-18T12:29:27Z"}],"graph_snapshots":[{"event_id":"sha256:d2e7ea2e89d07220470fa157657bf45585400e566c4b51650061d76f686f477a","target":"graph","created_at":"2026-05-18T02:03:48Z","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":"We present a magnetically shielded environment with a damping factor larger than one million at the mHz frequency regime and an extremely low field and gradient over an extended volume. This extraordinary shielding performance represents an improvement of the state of the art in damping the difficult regime of very low-frequency distortions by more than an order of magnitude. This technology enables a new generation of high precision measurements in fundamental physics and metrology, including searches for new physics far beyond the reach of accelerator-based experiments. We discuss the techni","authors_text":"A. Schnabel, B. Niessen, B. Taubenheim, D. H. Beck, F. Kuchler, G. Petzoldt, I. Altarev, J. T. Singh, J. Voigt, K. Fierlinger, M. Bales, M. G. Marino, M. Strum, P. Fierlinger, R. Stoepler, S. Stuiber, T. Chupp, T. Lins, U. Schl\\\"apfer","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2015-01-30T17:48:48Z","title":"A large-scale magnetic shield with 10^6 damping at mHz frequencies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1501.07861","kind":"arxiv","version":4},"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:b5fe5e6714bc329dd1c9667fd65bb73cb7b00f38fbb7261e89791036172d517c","target":"record","created_at":"2026-05-18T02:03:48Z","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":"1db73aef5f64157725f230dafa1e466d666397b026b58af6b0d4e9a35da6144d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2015-01-30T17:48:48Z","title_canon_sha256":"9dda02f8a057c2a99a0df5385a0c78a5f64fa7a1001401f9720a6599ea1a5af7"},"schema_version":"1.0","source":{"id":"1501.07861","kind":"arxiv","version":4}},"canonical_sha256":"56c41eb4c1a28e5d5f069faed40a3bc51b0932e387c3801475bb7d400138d2a0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"56c41eb4c1a28e5d5f069faed40a3bc51b0932e387c3801475bb7d400138d2a0","first_computed_at":"2026-05-18T02:03:48.083659Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:03:48.083659Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"cjdKRZLmWLPuzc2SkQ0Lp/Mywf9hJLQVaY85OTgDzADC9jwbZLQ+silSCWyt1zzt8AFMtZYRZ5uXz7uJP8DGDg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:03:48.084071Z","signed_message":"canonical_sha256_bytes"},"source_id":"1501.07861","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b5fe5e6714bc329dd1c9667fd65bb73cb7b00f38fbb7261e89791036172d517c","sha256:d2e7ea2e89d07220470fa157657bf45585400e566c4b51650061d76f686f477a"],"state_sha256":"21209114ac4785096b1793ea847c40117422a2966fe48788097474a23d894b71"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OxCH4SkWRtfd3E9omgnzVgXNceGKmKeJWdJZplDzzA54JlJofAiuM2TXLxFTVpHCRh43/w+RrJDc9DRb+DzrCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-05T04:46:46.258820Z","bundle_sha256":"1c1452c1c1ebcabd33b0134bec06909ae325b32c9159dafecf8af3fa2213cf9e"}}