{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:M4UWZI4XCOJKSD6CTF37DNQCCH","short_pith_number":"pith:M4UWZI4X","canonical_record":{"source":{"id":"2309.13923","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2023-09-25T07:46:27Z","cross_cats_sorted":["astro-ph.CO","astro-ph.IM","physics.ins-det"],"title_canon_sha256":"b23c23a7d02c3c97584edf66d12156735ff910aed9234a6fe4108ece24ee2a1e","abstract_canon_sha256":"d3db4e3692f44c989c7d35a9ffbb57fb6982764c989cf027a50baf4a7755c935"},"schema_version":"1.0"},"canonical_sha256":"67296ca3971392a90fc29977f1b60211c1afd34aebd51f991ef4995b7c3370c0","source":{"kind":"arxiv","id":"2309.13923","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2309.13923","created_at":"2026-07-05T07:53:10Z"},{"alias_kind":"arxiv_version","alias_value":"2309.13923v2","created_at":"2026-07-05T07:53:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2309.13923","created_at":"2026-07-05T07:53:10Z"},{"alias_kind":"pith_short_12","alias_value":"M4UWZI4XCOJK","created_at":"2026-07-05T07:53:10Z"},{"alias_kind":"pith_short_16","alias_value":"M4UWZI4XCOJKSD6C","created_at":"2026-07-05T07:53:10Z"},{"alias_kind":"pith_short_8","alias_value":"M4UWZI4X","created_at":"2026-07-05T07:53:10Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:M4UWZI4XCOJKSD6CTF37DNQCCH","target":"record","payload":{"canonical_record":{"source":{"id":"2309.13923","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2023-09-25T07:46:27Z","cross_cats_sorted":["astro-ph.CO","astro-ph.IM","physics.ins-det"],"title_canon_sha256":"b23c23a7d02c3c97584edf66d12156735ff910aed9234a6fe4108ece24ee2a1e","abstract_canon_sha256":"d3db4e3692f44c989c7d35a9ffbb57fb6982764c989cf027a50baf4a7755c935"},"schema_version":"1.0"},"canonical_sha256":"67296ca3971392a90fc29977f1b60211c1afd34aebd51f991ef4995b7c3370c0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T07:53:10.697722Z","signature_b64":"PNVfixNDUqd7Xr7Sw2nRbvj/IMfU5MeGCYRlwBS/Q/GTbqDyEJqEIq88sIm+jhbmlaaK4hgScAeY3g3CGdyOAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"67296ca3971392a90fc29977f1b60211c1afd34aebd51f991ef4995b7c3370c0","last_reissued_at":"2026-07-05T07:53:10.697228Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T07:53:10.697228Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2309.13923","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T07:53:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pmixTzfCRT2WL7ghv6Lt6ckNP2Cgkj2D27dDOBC1IPu1ysBvoEjk4KthgDGyA+b37i1pX36/gbY/+ekjvHwMCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T08:46:25.066620Z"},"content_sha256":"616091fb357dabdd7c8854e2f60b81d97ccb71ae6384a013a7e3eeb0823567dd","schema_version":"1.0","event_id":"sha256:616091fb357dabdd7c8854e2f60b81d97ccb71ae6384a013a7e3eeb0823567dd"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:M4UWZI4XCOJKSD6CTF37DNQCCH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Challenges for the directional dark matter direct detection","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","astro-ph.IM","physics.ins-det"],"primary_cat":"hep-ex","authors_text":"Kentaro Miuchi","submitted_at":"2023-09-25T07:46:27Z","abstract_excerpt":"Directional methods have been considered to provide a solid proof for the direct detection of the dark matter. Gaseous time-projection-chambers (TPCs) are the most mature devices for directional dark matter searches although there still exist several challenges to overcome. This paper reviews the history, current challenges and future prospects of the gaseous TPCs for directional dark matter searches."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2309.13923","kind":"arxiv","version":2},"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/2309.13923/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":"2026-07-05T07:53:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YCm3u29duTvxUZ4ERCbZ9TbBRblOW8WDPqNecc7/FWzY4/nbcIUMwq4RcE6hvLjxBSC9gAYQdT3eLfjy0s+HBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T08:46:25.067573Z"},"content_sha256":"fd79b20a11ba09894009878b47629b9f374d3f4bf07a8aff0a2b1b1700c261d1","schema_version":"1.0","event_id":"sha256:fd79b20a11ba09894009878b47629b9f374d3f4bf07a8aff0a2b1b1700c261d1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/M4UWZI4XCOJKSD6CTF37DNQCCH/bundle.json","state_url":"https://pith.science/pith/M4UWZI4XCOJKSD6CTF37DNQCCH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/M4UWZI4XCOJKSD6CTF37DNQCCH/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":"2026-08-18T08:46:25Z","links":{"resolver":"https://pith.science/pith/M4UWZI4XCOJKSD6CTF37DNQCCH","bundle":"https://pith.science/pith/M4UWZI4XCOJKSD6CTF37DNQCCH/bundle.json","state":"https://pith.science/pith/M4UWZI4XCOJKSD6CTF37DNQCCH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/M4UWZI4XCOJKSD6CTF37DNQCCH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:M4UWZI4XCOJKSD6CTF37DNQCCH","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":"d3db4e3692f44c989c7d35a9ffbb57fb6982764c989cf027a50baf4a7755c935","cross_cats_sorted":["astro-ph.CO","astro-ph.IM","physics.ins-det"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2023-09-25T07:46:27Z","title_canon_sha256":"b23c23a7d02c3c97584edf66d12156735ff910aed9234a6fe4108ece24ee2a1e"},"schema_version":"1.0","source":{"id":"2309.13923","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2309.13923","created_at":"2026-07-05T07:53:10Z"},{"alias_kind":"arxiv_version","alias_value":"2309.13923v2","created_at":"2026-07-05T07:53:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2309.13923","created_at":"2026-07-05T07:53:10Z"},{"alias_kind":"pith_short_12","alias_value":"M4UWZI4XCOJK","created_at":"2026-07-05T07:53:10Z"},{"alias_kind":"pith_short_16","alias_value":"M4UWZI4XCOJKSD6C","created_at":"2026-07-05T07:53:10Z"},{"alias_kind":"pith_short_8","alias_value":"M4UWZI4X","created_at":"2026-07-05T07:53:10Z"}],"graph_snapshots":[{"event_id":"sha256:fd79b20a11ba09894009878b47629b9f374d3f4bf07a8aff0a2b1b1700c261d1","target":"graph","created_at":"2026-07-05T07:53:10Z","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/2309.13923/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Directional methods have been considered to provide a solid proof for the direct detection of the dark matter. Gaseous time-projection-chambers (TPCs) are the most mature devices for directional dark matter searches although there still exist several challenges to overcome. This paper reviews the history, current challenges and future prospects of the gaseous TPCs for directional dark matter searches.","authors_text":"Kentaro Miuchi","cross_cats":["astro-ph.CO","astro-ph.IM","physics.ins-det"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2023-09-25T07:46:27Z","title":"Challenges for the directional dark matter direct detection"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2309.13923","kind":"arxiv","version":2},"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":"sha256:616091fb357dabdd7c8854e2f60b81d97ccb71ae6384a013a7e3eeb0823567dd","target":"record","created_at":"2026-07-05T07:53:10Z","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":"d3db4e3692f44c989c7d35a9ffbb57fb6982764c989cf027a50baf4a7755c935","cross_cats_sorted":["astro-ph.CO","astro-ph.IM","physics.ins-det"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2023-09-25T07:46:27Z","title_canon_sha256":"b23c23a7d02c3c97584edf66d12156735ff910aed9234a6fe4108ece24ee2a1e"},"schema_version":"1.0","source":{"id":"2309.13923","kind":"arxiv","version":2}},"canonical_sha256":"67296ca3971392a90fc29977f1b60211c1afd34aebd51f991ef4995b7c3370c0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"67296ca3971392a90fc29977f1b60211c1afd34aebd51f991ef4995b7c3370c0","first_computed_at":"2026-07-05T07:53:10.697228Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T07:53:10.697228Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"PNVfixNDUqd7Xr7Sw2nRbvj/IMfU5MeGCYRlwBS/Q/GTbqDyEJqEIq88sIm+jhbmlaaK4hgScAeY3g3CGdyOAA==","signature_status":"signed_v1","signed_at":"2026-07-05T07:53:10.697722Z","signed_message":"canonical_sha256_bytes"},"source_id":"2309.13923","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:616091fb357dabdd7c8854e2f60b81d97ccb71ae6384a013a7e3eeb0823567dd","sha256:fd79b20a11ba09894009878b47629b9f374d3f4bf07a8aff0a2b1b1700c261d1"],"state_sha256":"bb6f3d87153bb30b07fe8de1493a8d02402b338767fcb719df9e6d0e0e3bf7c7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CcKg0feIyDrm4y7YfkNsdO4eKRpTxEUtuuwnWB4kYFQefZLl3enxfNHiUhz+cD0VuAK/CyvX1e3SmyyoNdXXCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-18T08:46:25.071583Z","bundle_sha256":"08af7bdd242f5b24a20f2b5a5d7890603333774d250a7c5d5a275c6746c7f419"}}