{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1995:QQYA465ZQMZPNMKQ4CLCGXZ3MY","short_pith_number":"pith:QQYA465Z","canonical_record":{"source":{"id":"hep-ph/9507309","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"hep-ph","submitted_at":"1995-07-14T10:23:25Z","cross_cats_sorted":[],"title_canon_sha256":"6a5fcd5e29fadd48dd46178e910eab9e812ffa0d49d5c3a5c5e8d596dd379ff1","abstract_canon_sha256":"cc31c61320333e56af8af2d3c178f8b44e0eafe8f44d7fe5409a0313b08dcb82"},"schema_version":"1.0"},"canonical_sha256":"84300e7bb98332f6b150e096235f3b663d14b3c536c553b86089ded65a4bd106","source":{"kind":"arxiv","id":"hep-ph/9507309","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ph/9507309","created_at":"2026-05-18T02:37:12Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ph/9507309v1","created_at":"2026-05-18T02:37:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ph/9507309","created_at":"2026-05-18T02:37:12Z"},{"alias_kind":"pith_short_12","alias_value":"QQYA465ZQMZP","created_at":"2026-05-18T12:25:47Z"},{"alias_kind":"pith_short_16","alias_value":"QQYA465ZQMZPNMKQ","created_at":"2026-05-18T12:25:47Z"},{"alias_kind":"pith_short_8","alias_value":"QQYA465Z","created_at":"2026-05-18T12:25:47Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1995:QQYA465ZQMZPNMKQ4CLCGXZ3MY","target":"record","payload":{"canonical_record":{"source":{"id":"hep-ph/9507309","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"hep-ph","submitted_at":"1995-07-14T10:23:25Z","cross_cats_sorted":[],"title_canon_sha256":"6a5fcd5e29fadd48dd46178e910eab9e812ffa0d49d5c3a5c5e8d596dd379ff1","abstract_canon_sha256":"cc31c61320333e56af8af2d3c178f8b44e0eafe8f44d7fe5409a0313b08dcb82"},"schema_version":"1.0"},"canonical_sha256":"84300e7bb98332f6b150e096235f3b663d14b3c536c553b86089ded65a4bd106","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:37:12.674632Z","signature_b64":"6M4oKR2icyxZ94sbMo+c4cyiMXOWWTUs82RN7UbO5QAjlBEs+gqCByBTPfAlZGhEyHQhj7z8k420LR1xFjj7Ag==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"84300e7bb98332f6b150e096235f3b663d14b3c536c553b86089ded65a4bd106","last_reissued_at":"2026-05-18T02:37:12.674199Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:37:12.674199Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"hep-ph/9507309","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":"2026-05-18T02:37:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YBd3zdQHP5HzldukIFL/Z+GHl+EhnHfa0deOpmXVdXXSs+PiCyNBQ77StRDPaa0wn1Zu9iW0oljw1n/jc9zlCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T13:36:14.541577Z"},"content_sha256":"84069511c01ebb7972e27cb3ed6879f9152244ee0db70c8ac2374cf519907518","schema_version":"1.0","event_id":"sha256:84069511c01ebb7972e27cb3ed6879f9152244ee0db70c8ac2374cf519907518"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1995:QQYA465ZQMZPNMKQ4CLCGXZ3MY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"How to Determine the Pion Cloud of the Constituent Quark","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"B. Povh, H.J. Pirner, K. K\\\"onigsmann, S. Baumg\\\"artner","submitted_at":"1995-07-14T10:23:25Z","abstract_excerpt":"We calculate the differential cross section for semi-inclusive pion production in electron proton reactions using a model where the physical quark fluctuates with some probability to quark plus pion. The kinematic regions for a determination of this `pion cloud' are evaluated."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9507309","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":""},"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":"2026-05-18T02:37:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rrVBITKE0zEOnIVw7jM6ogySxW+cvjX22y+KkgpYQBMcCNkzJckoznCddzQ6LmWAo4rFrqZKU8doHXVihcRrDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T13:36:14.542250Z"},"content_sha256":"9cd1775366d5b525e803dbd830d939efba7050fdc93b5568fe963e47af9f678f","schema_version":"1.0","event_id":"sha256:9cd1775366d5b525e803dbd830d939efba7050fdc93b5568fe963e47af9f678f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QQYA465ZQMZPNMKQ4CLCGXZ3MY/bundle.json","state_url":"https://pith.science/pith/QQYA465ZQMZPNMKQ4CLCGXZ3MY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QQYA465ZQMZPNMKQ4CLCGXZ3MY/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":"2026-05-28T13:36:14Z","links":{"resolver":"https://pith.science/pith/QQYA465ZQMZPNMKQ4CLCGXZ3MY","bundle":"https://pith.science/pith/QQYA465ZQMZPNMKQ4CLCGXZ3MY/bundle.json","state":"https://pith.science/pith/QQYA465ZQMZPNMKQ4CLCGXZ3MY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QQYA465ZQMZPNMKQ4CLCGXZ3MY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1995:QQYA465ZQMZPNMKQ4CLCGXZ3MY","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":"cc31c61320333e56af8af2d3c178f8b44e0eafe8f44d7fe5409a0313b08dcb82","cross_cats_sorted":[],"license":"","primary_cat":"hep-ph","submitted_at":"1995-07-14T10:23:25Z","title_canon_sha256":"6a5fcd5e29fadd48dd46178e910eab9e812ffa0d49d5c3a5c5e8d596dd379ff1"},"schema_version":"1.0","source":{"id":"hep-ph/9507309","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ph/9507309","created_at":"2026-05-18T02:37:12Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ph/9507309v1","created_at":"2026-05-18T02:37:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ph/9507309","created_at":"2026-05-18T02:37:12Z"},{"alias_kind":"pith_short_12","alias_value":"QQYA465ZQMZP","created_at":"2026-05-18T12:25:47Z"},{"alias_kind":"pith_short_16","alias_value":"QQYA465ZQMZPNMKQ","created_at":"2026-05-18T12:25:47Z"},{"alias_kind":"pith_short_8","alias_value":"QQYA465Z","created_at":"2026-05-18T12:25:47Z"}],"graph_snapshots":[{"event_id":"sha256:9cd1775366d5b525e803dbd830d939efba7050fdc93b5568fe963e47af9f678f","target":"graph","created_at":"2026-05-18T02:37:12Z","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 calculate the differential cross section for semi-inclusive pion production in electron proton reactions using a model where the physical quark fluctuates with some probability to quark plus pion. The kinematic regions for a determination of this `pion cloud' are evaluated.","authors_text":"B. Povh, H.J. Pirner, K. K\\\"onigsmann, S. Baumg\\\"artner","cross_cats":[],"headline":"","license":"","primary_cat":"hep-ph","submitted_at":"1995-07-14T10:23:25Z","title":"How to Determine the Pion Cloud of the Constituent Quark"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9507309","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":"sha256:84069511c01ebb7972e27cb3ed6879f9152244ee0db70c8ac2374cf519907518","target":"record","created_at":"2026-05-18T02:37:12Z","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":"cc31c61320333e56af8af2d3c178f8b44e0eafe8f44d7fe5409a0313b08dcb82","cross_cats_sorted":[],"license":"","primary_cat":"hep-ph","submitted_at":"1995-07-14T10:23:25Z","title_canon_sha256":"6a5fcd5e29fadd48dd46178e910eab9e812ffa0d49d5c3a5c5e8d596dd379ff1"},"schema_version":"1.0","source":{"id":"hep-ph/9507309","kind":"arxiv","version":1}},"canonical_sha256":"84300e7bb98332f6b150e096235f3b663d14b3c536c553b86089ded65a4bd106","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"84300e7bb98332f6b150e096235f3b663d14b3c536c553b86089ded65a4bd106","first_computed_at":"2026-05-18T02:37:12.674199Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:37:12.674199Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"6M4oKR2icyxZ94sbMo+c4cyiMXOWWTUs82RN7UbO5QAjlBEs+gqCByBTPfAlZGhEyHQhj7z8k420LR1xFjj7Ag==","signature_status":"signed_v1","signed_at":"2026-05-18T02:37:12.674632Z","signed_message":"canonical_sha256_bytes"},"source_id":"hep-ph/9507309","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:84069511c01ebb7972e27cb3ed6879f9152244ee0db70c8ac2374cf519907518","sha256:9cd1775366d5b525e803dbd830d939efba7050fdc93b5568fe963e47af9f678f"],"state_sha256":"e1830a8c57ccc6066d19c69784092dba2d043b9c3988660448229b2eb45493dd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vOmo7Z3O4jf2np13/vfGwQBFq4mU11sWhImZpFPJb5nt0Rzd4QkMJg/4384e+XMJqaH2k9iWrNKakZyP2MtJCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T13:36:14.545498Z","bundle_sha256":"91f8424243c38572a8a372b0f97b86ee5dbc20ce811cb59d07f6f8533aa34e94"}}