{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:SRNLEUPQ64XIOABNEABXK7RVVJ","short_pith_number":"pith:SRNLEUPQ","canonical_record":{"source":{"id":"2205.01108","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2022-05-02T18:00:00Z","cross_cats_sorted":["hep-lat","nucl-th"],"title_canon_sha256":"584b762e4bb58754f7ae134dc519f4feeedb05c75f02e541017662d570daaef4","abstract_canon_sha256":"c7aa96022d59dd72dad0d662315582c7b0db0615d507f5c9a6f8b092e41c7cfc"},"schema_version":"1.0"},"canonical_sha256":"945ab251f0f72e87002d2003757e35aa4510340b229f1ec3593d6c9d060cf96a","source":{"kind":"arxiv","id":"2205.01108","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2205.01108","created_at":"2026-07-05T04:20:01Z"},{"alias_kind":"arxiv_version","alias_value":"2205.01108v1","created_at":"2026-07-05T04:20:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2205.01108","created_at":"2026-07-05T04:20:01Z"},{"alias_kind":"pith_short_12","alias_value":"SRNLEUPQ64XI","created_at":"2026-07-05T04:20:01Z"},{"alias_kind":"pith_short_16","alias_value":"SRNLEUPQ64XIOABN","created_at":"2026-07-05T04:20:01Z"},{"alias_kind":"pith_short_8","alias_value":"SRNLEUPQ","created_at":"2026-07-05T04:20:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:SRNLEUPQ64XIOABNEABXK7RVVJ","target":"record","payload":{"canonical_record":{"source":{"id":"2205.01108","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2022-05-02T18:00:00Z","cross_cats_sorted":["hep-lat","nucl-th"],"title_canon_sha256":"584b762e4bb58754f7ae134dc519f4feeedb05c75f02e541017662d570daaef4","abstract_canon_sha256":"c7aa96022d59dd72dad0d662315582c7b0db0615d507f5c9a6f8b092e41c7cfc"},"schema_version":"1.0"},"canonical_sha256":"945ab251f0f72e87002d2003757e35aa4510340b229f1ec3593d6c9d060cf96a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:20:01.196155Z","signature_b64":"yctrWS8U7F/+ZPIwfXR1WN+8pM3PdT4uSysAH1Ye7OieFnsaMuDzsbFD/fvVWOVwCVo3eTEpLInQM28IwQjbDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"945ab251f0f72e87002d2003757e35aa4510340b229f1ec3593d6c9d060cf96a","last_reissued_at":"2026-07-05T04:20:01.195744Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:20:01.195744Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2205.01108","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":"2026-07-05T04:20:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dzQ3jJF0lX6Anp0ti/pzIKwt76nvMU3xA8hntVDoxPfhRTrdF1Mp9kJS44XSxbr+pMnnuiTR/RvfGDYUMB06DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T03:54:59.129860Z"},"content_sha256":"38e54640bf612acc38dde998f562ca368f0f87c5d84ea9fc153c8bc948f57398","schema_version":"1.0","event_id":"sha256:38e54640bf612acc38dde998f562ca368f0f87c5d84ea9fc153c8bc948f57398"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:SRNLEUPQ64XIOABNEABXK7RVVJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Brief history of the pion-nucleon sigma term","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["hep-lat","nucl-th"],"primary_cat":"hep-ph","authors_text":"J. M. Alarc\\'on","submitted_at":"2022-05-02T18:00:00Z","abstract_excerpt":"The pion-nucleon sigma term is a quantity involved in many important aspects of particle and nuclear physics. In this review I show its origin and how it is connected to important questions as the origin of mass of the ordinary matter, studies of dark matter detection and nucleosynthesis. I mention the most common methods used to obtain the sigma term, and comment on the extracted values. As it is shown, the accepted value of the sigma term has been moving from relatively low ($\\sim 40$ MeV) to larger ones ($\\sim 60$ MeV) until today, where this controversy still persist."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2205.01108","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2205.01108/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":"2026-07-05T04:20:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"glkNK97iwP0vXgzRhK3S8dsIoOIsV8nYtFYx8TiQVtgEotz5QBpFJb74SGtf3kM7lASBiR+gcogHFXnIBeeVDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T03:54:59.130384Z"},"content_sha256":"0de92c4f30bfea859cc3e1f21a58d8609ec6485b5509e3deb43d1bc9d40d867e","schema_version":"1.0","event_id":"sha256:0de92c4f30bfea859cc3e1f21a58d8609ec6485b5509e3deb43d1bc9d40d867e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SRNLEUPQ64XIOABNEABXK7RVVJ/bundle.json","state_url":"https://pith.science/pith/SRNLEUPQ64XIOABNEABXK7RVVJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SRNLEUPQ64XIOABNEABXK7RVVJ/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":"2026-08-12T03:54:59Z","links":{"resolver":"https://pith.science/pith/SRNLEUPQ64XIOABNEABXK7RVVJ","bundle":"https://pith.science/pith/SRNLEUPQ64XIOABNEABXK7RVVJ/bundle.json","state":"https://pith.science/pith/SRNLEUPQ64XIOABNEABXK7RVVJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SRNLEUPQ64XIOABNEABXK7RVVJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:SRNLEUPQ64XIOABNEABXK7RVVJ","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":"c7aa96022d59dd72dad0d662315582c7b0db0615d507f5c9a6f8b092e41c7cfc","cross_cats_sorted":["hep-lat","nucl-th"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2022-05-02T18:00:00Z","title_canon_sha256":"584b762e4bb58754f7ae134dc519f4feeedb05c75f02e541017662d570daaef4"},"schema_version":"1.0","source":{"id":"2205.01108","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2205.01108","created_at":"2026-07-05T04:20:01Z"},{"alias_kind":"arxiv_version","alias_value":"2205.01108v1","created_at":"2026-07-05T04:20:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2205.01108","created_at":"2026-07-05T04:20:01Z"},{"alias_kind":"pith_short_12","alias_value":"SRNLEUPQ64XI","created_at":"2026-07-05T04:20:01Z"},{"alias_kind":"pith_short_16","alias_value":"SRNLEUPQ64XIOABN","created_at":"2026-07-05T04:20:01Z"},{"alias_kind":"pith_short_8","alias_value":"SRNLEUPQ","created_at":"2026-07-05T04:20:01Z"}],"graph_snapshots":[{"event_id":"sha256:0de92c4f30bfea859cc3e1f21a58d8609ec6485b5509e3deb43d1bc9d40d867e","target":"graph","created_at":"2026-07-05T04:20:01Z","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/2205.01108/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The pion-nucleon sigma term is a quantity involved in many important aspects of particle and nuclear physics. In this review I show its origin and how it is connected to important questions as the origin of mass of the ordinary matter, studies of dark matter detection and nucleosynthesis. I mention the most common methods used to obtain the sigma term, and comment on the extracted values. As it is shown, the accepted value of the sigma term has been moving from relatively low ($\\sim 40$ MeV) to larger ones ($\\sim 60$ MeV) until today, where this controversy still persist.","authors_text":"J. M. Alarc\\'on","cross_cats":["hep-lat","nucl-th"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2022-05-02T18:00:00Z","title":"Brief history of the pion-nucleon sigma term"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2205.01108","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":"sha256:38e54640bf612acc38dde998f562ca368f0f87c5d84ea9fc153c8bc948f57398","target":"record","created_at":"2026-07-05T04:20:01Z","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":"c7aa96022d59dd72dad0d662315582c7b0db0615d507f5c9a6f8b092e41c7cfc","cross_cats_sorted":["hep-lat","nucl-th"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2022-05-02T18:00:00Z","title_canon_sha256":"584b762e4bb58754f7ae134dc519f4feeedb05c75f02e541017662d570daaef4"},"schema_version":"1.0","source":{"id":"2205.01108","kind":"arxiv","version":1}},"canonical_sha256":"945ab251f0f72e87002d2003757e35aa4510340b229f1ec3593d6c9d060cf96a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"945ab251f0f72e87002d2003757e35aa4510340b229f1ec3593d6c9d060cf96a","first_computed_at":"2026-07-05T04:20:01.195744Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:20:01.195744Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"yctrWS8U7F/+ZPIwfXR1WN+8pM3PdT4uSysAH1Ye7OieFnsaMuDzsbFD/fvVWOVwCVo3eTEpLInQM28IwQjbDA==","signature_status":"signed_v1","signed_at":"2026-07-05T04:20:01.196155Z","signed_message":"canonical_sha256_bytes"},"source_id":"2205.01108","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:38e54640bf612acc38dde998f562ca368f0f87c5d84ea9fc153c8bc948f57398","sha256:0de92c4f30bfea859cc3e1f21a58d8609ec6485b5509e3deb43d1bc9d40d867e"],"state_sha256":"2b57e4098a5c3c0c2ca5be6bb941c00a825b7bbad3946b5cc9d1bc246fd870d0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aMYqF3nldEzkwtWkOev0cIRLXTJPQT5XZ5rMQA7p+lZIWTOZU1DLQ1bAlJzZnMEOFi+fnJVpkkT3+LKM8/zDDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-12T03:54:59.134847Z","bundle_sha256":"4f64c961a0135ebc17ba0553c7a5bf1dd267c066bbc078e8500727032c4e16ec"}}