{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:GPNW5XKPEL7VDC6KHX37F7C32K","short_pith_number":"pith:GPNW5XKP","canonical_record":{"source":{"id":"1606.02214","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2016-06-07T17:00:37Z","cross_cats_sorted":["nucl-th"],"title_canon_sha256":"20d6847f5b3e4b2125f7475f46a4e19291f8bae22b77a1bd22745d8651b57a6b","abstract_canon_sha256":"dfd336ee1adf9acde2fe5cd4f77ec0e0c74aaad6092a3a024c624fd584a9f783"},"schema_version":"1.0"},"canonical_sha256":"33db6edd4f22ff518bca3df7f2fc5bd297daaee93430b4c2c2937545b69e8c3d","source":{"kind":"arxiv","id":"1606.02214","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1606.02214","created_at":"2026-05-18T01:10:58Z"},{"alias_kind":"arxiv_version","alias_value":"1606.02214v2","created_at":"2026-05-18T01:10:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1606.02214","created_at":"2026-05-18T01:10:58Z"},{"alias_kind":"pith_short_12","alias_value":"GPNW5XKPEL7V","created_at":"2026-05-18T12:30:19Z"},{"alias_kind":"pith_short_16","alias_value":"GPNW5XKPEL7VDC6K","created_at":"2026-05-18T12:30:19Z"},{"alias_kind":"pith_short_8","alias_value":"GPNW5XKP","created_at":"2026-05-18T12:30:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:GPNW5XKPEL7VDC6KHX37F7C32K","target":"record","payload":{"canonical_record":{"source":{"id":"1606.02214","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2016-06-07T17:00:37Z","cross_cats_sorted":["nucl-th"],"title_canon_sha256":"20d6847f5b3e4b2125f7475f46a4e19291f8bae22b77a1bd22745d8651b57a6b","abstract_canon_sha256":"dfd336ee1adf9acde2fe5cd4f77ec0e0c74aaad6092a3a024c624fd584a9f783"},"schema_version":"1.0"},"canonical_sha256":"33db6edd4f22ff518bca3df7f2fc5bd297daaee93430b4c2c2937545b69e8c3d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:10:58.956661Z","signature_b64":"gyuTYi2ge10t4u3fNKZapgCLizT91m+/rPjTFoI7qiEuUlMSmDZKFE9Ty5V/SeA421rW0+J6hzi2lN69NpZyAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"33db6edd4f22ff518bca3df7f2fc5bd297daaee93430b4c2c2937545b69e8c3d","last_reissued_at":"2026-05-18T01:10:58.956121Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:10:58.956121Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1606.02214","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":"2026-05-18T01:10:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QZoK46DUcOYJT6u67GT/24Y7rXy8bsaGjQIZZJgvfACD9kYlYB2i5L2+X2xySA4UmIQ9GSsPEQUS1CaEF5N9Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T16:41:24.854068Z"},"content_sha256":"8c24f2bf319c55ed81b583aabb12ed9fb532c756e9dc0dd167b5f6b0423e6195","schema_version":"1.0","event_id":"sha256:8c24f2bf319c55ed81b583aabb12ed9fb532c756e9dc0dd167b5f6b0423e6195"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:GPNW5XKPEL7VDC6KHX37F7C32K","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Chiral-symmetry breaking and pion structure in the Covariant Spectator Theory","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-th"],"primary_cat":"hep-ph","authors_text":"Alfred Stadler, Elmar P. Biernat, Em\\'ilio Ribeiro, Franz Gross, M. T. Pe\\~na","submitted_at":"2016-06-07T17:00:37Z","abstract_excerpt":"We introduce a covariant approach in Minkowski space for the description of quarks and mesons that exhibits both chiral-symmetry breaking and confinement. In a simple model for the interquark interaction the quark mass function is obtained and used in the calculation of the pion form factor. We study the effects of the mass function and of the different quark pole contributions on the pion form factor."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1606.02214","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":""},"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":"2026-05-18T01:10:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AwFSOMr3XPAVRxbamB1dZ0gZewrzi/gWwrMTS14zWkvq83Vi2uAYvxvuMKaq6TmOmwjC2bYMvAfT8Yga4efxAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T16:41:24.854691Z"},"content_sha256":"615934538f83c898290f1aa586b7bb93e1fff5baf0d173a2890bfae024b5f43d","schema_version":"1.0","event_id":"sha256:615934538f83c898290f1aa586b7bb93e1fff5baf0d173a2890bfae024b5f43d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GPNW5XKPEL7VDC6KHX37F7C32K/bundle.json","state_url":"https://pith.science/pith/GPNW5XKPEL7VDC6KHX37F7C32K/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GPNW5XKPEL7VDC6KHX37F7C32K/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":"2026-06-06T16:41:24Z","links":{"resolver":"https://pith.science/pith/GPNW5XKPEL7VDC6KHX37F7C32K","bundle":"https://pith.science/pith/GPNW5XKPEL7VDC6KHX37F7C32K/bundle.json","state":"https://pith.science/pith/GPNW5XKPEL7VDC6KHX37F7C32K/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GPNW5XKPEL7VDC6KHX37F7C32K/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:GPNW5XKPEL7VDC6KHX37F7C32K","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":"dfd336ee1adf9acde2fe5cd4f77ec0e0c74aaad6092a3a024c624fd584a9f783","cross_cats_sorted":["nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2016-06-07T17:00:37Z","title_canon_sha256":"20d6847f5b3e4b2125f7475f46a4e19291f8bae22b77a1bd22745d8651b57a6b"},"schema_version":"1.0","source":{"id":"1606.02214","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1606.02214","created_at":"2026-05-18T01:10:58Z"},{"alias_kind":"arxiv_version","alias_value":"1606.02214v2","created_at":"2026-05-18T01:10:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1606.02214","created_at":"2026-05-18T01:10:58Z"},{"alias_kind":"pith_short_12","alias_value":"GPNW5XKPEL7V","created_at":"2026-05-18T12:30:19Z"},{"alias_kind":"pith_short_16","alias_value":"GPNW5XKPEL7VDC6K","created_at":"2026-05-18T12:30:19Z"},{"alias_kind":"pith_short_8","alias_value":"GPNW5XKP","created_at":"2026-05-18T12:30:19Z"}],"graph_snapshots":[{"event_id":"sha256:615934538f83c898290f1aa586b7bb93e1fff5baf0d173a2890bfae024b5f43d","target":"graph","created_at":"2026-05-18T01:10:58Z","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 introduce a covariant approach in Minkowski space for the description of quarks and mesons that exhibits both chiral-symmetry breaking and confinement. In a simple model for the interquark interaction the quark mass function is obtained and used in the calculation of the pion form factor. We study the effects of the mass function and of the different quark pole contributions on the pion form factor.","authors_text":"Alfred Stadler, Elmar P. Biernat, Em\\'ilio Ribeiro, Franz Gross, M. T. Pe\\~na","cross_cats":["nucl-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2016-06-07T17:00:37Z","title":"Chiral-symmetry breaking and pion structure in the Covariant Spectator Theory"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1606.02214","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":"sha256:8c24f2bf319c55ed81b583aabb12ed9fb532c756e9dc0dd167b5f6b0423e6195","target":"record","created_at":"2026-05-18T01:10:58Z","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":"dfd336ee1adf9acde2fe5cd4f77ec0e0c74aaad6092a3a024c624fd584a9f783","cross_cats_sorted":["nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2016-06-07T17:00:37Z","title_canon_sha256":"20d6847f5b3e4b2125f7475f46a4e19291f8bae22b77a1bd22745d8651b57a6b"},"schema_version":"1.0","source":{"id":"1606.02214","kind":"arxiv","version":2}},"canonical_sha256":"33db6edd4f22ff518bca3df7f2fc5bd297daaee93430b4c2c2937545b69e8c3d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"33db6edd4f22ff518bca3df7f2fc5bd297daaee93430b4c2c2937545b69e8c3d","first_computed_at":"2026-05-18T01:10:58.956121Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:10:58.956121Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"gyuTYi2ge10t4u3fNKZapgCLizT91m+/rPjTFoI7qiEuUlMSmDZKFE9Ty5V/SeA421rW0+J6hzi2lN69NpZyAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:10:58.956661Z","signed_message":"canonical_sha256_bytes"},"source_id":"1606.02214","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8c24f2bf319c55ed81b583aabb12ed9fb532c756e9dc0dd167b5f6b0423e6195","sha256:615934538f83c898290f1aa586b7bb93e1fff5baf0d173a2890bfae024b5f43d"],"state_sha256":"4350bede6574d1df7fcd60d44841f75ae163b96273656d64c132c73646d4e791"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AChudztENhF2+kOXpHXV9QdkUufHJdmSp08pZBxAcWlxpwBsafCv09sStvgKMPcFM2yc6ce3WPngEb3PYzuICw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-06T16:41:24.858342Z","bundle_sha256":"fe89d5e516e4d004f35e92474b6f39c4e44a30099000813569f3605442fbbb10"}}