{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:IFQYYZFPB2XIM7ZSBNXYOPTPKC","short_pith_number":"pith:IFQYYZFP","canonical_record":{"source":{"id":"2006.15360","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2020-06-27T13:13:09Z","cross_cats_sorted":["hep-lat","hep-ph","nucl-ex"],"title_canon_sha256":"a2edefbb2d01f1d725b24a84d1e3bc06496bc48744e571f14719c360f59a178b","abstract_canon_sha256":"a9bb847e9c21fa3006ba89dbbd521d9729f90b9524139cdd0a196fb39fc89a78"},"schema_version":"1.0"},"canonical_sha256":"41618c64af0eae867f320b6f873e6f5083a7c211eb26dd34d7b6f880606264d3","source":{"kind":"arxiv","id":"2006.15360","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2006.15360","created_at":"2026-07-05T02:21:34Z"},{"alias_kind":"arxiv_version","alias_value":"2006.15360v2","created_at":"2026-07-05T02:21:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2006.15360","created_at":"2026-07-05T02:21:34Z"},{"alias_kind":"pith_short_12","alias_value":"IFQYYZFPB2XI","created_at":"2026-07-05T02:21:34Z"},{"alias_kind":"pith_short_16","alias_value":"IFQYYZFPB2XIM7ZS","created_at":"2026-07-05T02:21:34Z"},{"alias_kind":"pith_short_8","alias_value":"IFQYYZFP","created_at":"2026-07-05T02:21:34Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:IFQYYZFPB2XIM7ZSBNXYOPTPKC","target":"record","payload":{"canonical_record":{"source":{"id":"2006.15360","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2020-06-27T13:13:09Z","cross_cats_sorted":["hep-lat","hep-ph","nucl-ex"],"title_canon_sha256":"a2edefbb2d01f1d725b24a84d1e3bc06496bc48744e571f14719c360f59a178b","abstract_canon_sha256":"a9bb847e9c21fa3006ba89dbbd521d9729f90b9524139cdd0a196fb39fc89a78"},"schema_version":"1.0"},"canonical_sha256":"41618c64af0eae867f320b6f873e6f5083a7c211eb26dd34d7b6f880606264d3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:21:34.420441Z","signature_b64":"cN84rvASjFzrmD3nmiMwQdRssYkYhDQI3oubLSBwAjUykkdas6eZum5V2HJmhvk3a3oN38Lt6b+Ptcv42c5vBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"41618c64af0eae867f320b6f873e6f5083a7c211eb26dd34d7b6f880606264d3","last_reissued_at":"2026-07-05T02:21:34.419981Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:21:34.419981Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2006.15360","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":"2026-07-05T02:21:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jMWbuOBwXk15iDZS9McLxrBQKW5B7JMI7BFmS6JePe9O6XiDweR31M7JX+0rjPn08CWdtA4m57aM8FW0ILERDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T00:59:40.001622Z"},"content_sha256":"ad67a55b20ee08a4d3f933793e8625521a0aa24cd291dad7aefcf25e3123153f","schema_version":"1.0","event_id":"sha256:ad67a55b20ee08a4d3f933793e8625521a0aa24cd291dad7aefcf25e3123153f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:IFQYYZFPB2XIM7ZSBNXYOPTPKC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Precision determination of pion-nucleon coupling constants using effective field theory","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-lat","hep-ph","nucl-ex"],"primary_cat":"nucl-th","authors_text":"E. Epelbaum, H. Krebs, P. Reinert","submitted_at":"2020-06-27T13:13:09Z","abstract_excerpt":"The pion-nucleon coupling constants determine the strength of the long-range nuclear forces and play a fundamental part in our understanding of nuclear physics. While the charged- and neutral-pion couplings to protons and neutrons are expected to be very similar, owing to the approximate isospin symmetry of the strong interaction, the different masses of the up- and down-quarks and electromagnetic effects may result in their slightly different values. Despite previous attempts to extract these coupling constants from different systems, our knowledge of their values is still deficient. In this "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2006.15360","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/2006.15360/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":"2026-07-05T02:21:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/MPZzCg7mJOCMdOzUUz54u6QDPfJMn+NlmNxmktjHizA3QE8BCIBjedyCXUnHPaiEy5QgWgjUJ/28pjlqDQmAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T00:59:40.002104Z"},"content_sha256":"aa87c3e00f0c7853629a8a4cf67361cbfc66b4a3684f5cb13f6abdbf60262e97","schema_version":"1.0","event_id":"sha256:aa87c3e00f0c7853629a8a4cf67361cbfc66b4a3684f5cb13f6abdbf60262e97"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IFQYYZFPB2XIM7ZSBNXYOPTPKC/bundle.json","state_url":"https://pith.science/pith/IFQYYZFPB2XIM7ZSBNXYOPTPKC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IFQYYZFPB2XIM7ZSBNXYOPTPKC/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":"2026-08-06T00:59:40Z","links":{"resolver":"https://pith.science/pith/IFQYYZFPB2XIM7ZSBNXYOPTPKC","bundle":"https://pith.science/pith/IFQYYZFPB2XIM7ZSBNXYOPTPKC/bundle.json","state":"https://pith.science/pith/IFQYYZFPB2XIM7ZSBNXYOPTPKC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IFQYYZFPB2XIM7ZSBNXYOPTPKC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:IFQYYZFPB2XIM7ZSBNXYOPTPKC","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":"a9bb847e9c21fa3006ba89dbbd521d9729f90b9524139cdd0a196fb39fc89a78","cross_cats_sorted":["hep-lat","hep-ph","nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2020-06-27T13:13:09Z","title_canon_sha256":"a2edefbb2d01f1d725b24a84d1e3bc06496bc48744e571f14719c360f59a178b"},"schema_version":"1.0","source":{"id":"2006.15360","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2006.15360","created_at":"2026-07-05T02:21:34Z"},{"alias_kind":"arxiv_version","alias_value":"2006.15360v2","created_at":"2026-07-05T02:21:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2006.15360","created_at":"2026-07-05T02:21:34Z"},{"alias_kind":"pith_short_12","alias_value":"IFQYYZFPB2XI","created_at":"2026-07-05T02:21:34Z"},{"alias_kind":"pith_short_16","alias_value":"IFQYYZFPB2XIM7ZS","created_at":"2026-07-05T02:21:34Z"},{"alias_kind":"pith_short_8","alias_value":"IFQYYZFP","created_at":"2026-07-05T02:21:34Z"}],"graph_snapshots":[{"event_id":"sha256:aa87c3e00f0c7853629a8a4cf67361cbfc66b4a3684f5cb13f6abdbf60262e97","target":"graph","created_at":"2026-07-05T02:21:34Z","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/2006.15360/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The pion-nucleon coupling constants determine the strength of the long-range nuclear forces and play a fundamental part in our understanding of nuclear physics. While the charged- and neutral-pion couplings to protons and neutrons are expected to be very similar, owing to the approximate isospin symmetry of the strong interaction, the different masses of the up- and down-quarks and electromagnetic effects may result in their slightly different values. Despite previous attempts to extract these coupling constants from different systems, our knowledge of their values is still deficient. In this ","authors_text":"E. Epelbaum, H. Krebs, P. Reinert","cross_cats":["hep-lat","hep-ph","nucl-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2020-06-27T13:13:09Z","title":"Precision determination of pion-nucleon coupling constants using effective field theory"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2006.15360","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:ad67a55b20ee08a4d3f933793e8625521a0aa24cd291dad7aefcf25e3123153f","target":"record","created_at":"2026-07-05T02:21:34Z","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":"a9bb847e9c21fa3006ba89dbbd521d9729f90b9524139cdd0a196fb39fc89a78","cross_cats_sorted":["hep-lat","hep-ph","nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2020-06-27T13:13:09Z","title_canon_sha256":"a2edefbb2d01f1d725b24a84d1e3bc06496bc48744e571f14719c360f59a178b"},"schema_version":"1.0","source":{"id":"2006.15360","kind":"arxiv","version":2}},"canonical_sha256":"41618c64af0eae867f320b6f873e6f5083a7c211eb26dd34d7b6f880606264d3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"41618c64af0eae867f320b6f873e6f5083a7c211eb26dd34d7b6f880606264d3","first_computed_at":"2026-07-05T02:21:34.419981Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:21:34.419981Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"cN84rvASjFzrmD3nmiMwQdRssYkYhDQI3oubLSBwAjUykkdas6eZum5V2HJmhvk3a3oN38Lt6b+Ptcv42c5vBg==","signature_status":"signed_v1","signed_at":"2026-07-05T02:21:34.420441Z","signed_message":"canonical_sha256_bytes"},"source_id":"2006.15360","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ad67a55b20ee08a4d3f933793e8625521a0aa24cd291dad7aefcf25e3123153f","sha256:aa87c3e00f0c7853629a8a4cf67361cbfc66b4a3684f5cb13f6abdbf60262e97"],"state_sha256":"93969b52f0c0bfb277c6b75846f21b217a9633f31b862ee5a7f887cd1659d6df"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+icUGnWQmGFS7ZfEvnECelVs4CUhoJmrWUVJC4mmMJ6OtosLUJf+yDQZXHvo7wyUttp9l0dgfwrmo7xsUVjVAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T00:59:40.005300Z","bundle_sha256":"c92d4b3150cd4e7dd31e9694798108268f87e0a13069bd371d0595d795c3235d"}}