{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:BK3OIIN7MPDOCBXAHT72LNFHAL","short_pith_number":"pith:BK3OIIN7","canonical_record":{"source":{"id":"1204.0752","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.soc-ph","submitted_at":"2012-04-03T18:06:02Z","cross_cats_sorted":["cs.DL","physics.data-an"],"title_canon_sha256":"9a6ccf373298c95dff10fc1340c0a38a707a313468709cf6a6a9e9c18975f7e9","abstract_canon_sha256":"1f4356b221696cfc1994f41df3e7de453c1567f7ead37de6046a8da1a3026def"},"schema_version":"1.0"},"canonical_sha256":"0ab6e421bf63c6e106e03cffa5b4a702db708d4dfc05ab9b1ed5e2d4fee603c0","source":{"kind":"arxiv","id":"1204.0752","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1204.0752","created_at":"2026-05-18T03:58:38Z"},{"alias_kind":"arxiv_version","alias_value":"1204.0752v1","created_at":"2026-05-18T03:58:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1204.0752","created_at":"2026-05-18T03:58:38Z"},{"alias_kind":"pith_short_12","alias_value":"BK3OIIN7MPDO","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_16","alias_value":"BK3OIIN7MPDOCBXA","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_8","alias_value":"BK3OIIN7","created_at":"2026-05-18T12:27:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:BK3OIIN7MPDOCBXAHT72LNFHAL","target":"record","payload":{"canonical_record":{"source":{"id":"1204.0752","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.soc-ph","submitted_at":"2012-04-03T18:06:02Z","cross_cats_sorted":["cs.DL","physics.data-an"],"title_canon_sha256":"9a6ccf373298c95dff10fc1340c0a38a707a313468709cf6a6a9e9c18975f7e9","abstract_canon_sha256":"1f4356b221696cfc1994f41df3e7de453c1567f7ead37de6046a8da1a3026def"},"schema_version":"1.0"},"canonical_sha256":"0ab6e421bf63c6e106e03cffa5b4a702db708d4dfc05ab9b1ed5e2d4fee603c0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:58:38.598943Z","signature_b64":"CLvNG45zVTCkd+7w8Ggrz+K64H3skvDx0lPs/sWnS5YvPKYGaJBysNJi18OPWgdFPnUCptjajZvbsJgOzaZrCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0ab6e421bf63c6e106e03cffa5b4a702db708d4dfc05ab9b1ed5e2d4fee603c0","last_reissued_at":"2026-05-18T03:58:38.598494Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:58:38.598494Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1204.0752","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":"2026-05-18T03:58:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"N1g9pRKkirdm1TZXR8fhrEnHq/BpFAqTt/AlmsCDh+AXSFPcUDwaVoo8NJzAZLjOVufUkjYiIEFeF+XfC0vmBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T22:45:54.557074Z"},"content_sha256":"76ca6f1c43a3568170ed7d4dfc4208c6c98481ca91859cd05ece530c50dca34b","schema_version":"1.0","event_id":"sha256:76ca6f1c43a3568170ed7d4dfc4208c6c98481ca91859cd05ece530c50dca34b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:BK3OIIN7MPDOCBXAHT72LNFHAL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Persistence and Uncertainty in the Academic Career","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.DL","physics.data-an"],"primary_cat":"physics.soc-ph","authors_text":"Alexander M. Petersen, Fabio Pammolli, H. Eugene Stanley, Massimo Riccaboni","submitted_at":"2012-04-03T18:06:02Z","abstract_excerpt":"Understanding how institutional changes within academia may affect the overall potential of science requires a better quantitative representation of how careers evolve over time. Since knowledge spillovers, cumulative advantage, competition, and collaboration are distinctive features of the academic profession, both the employment relationship and the procedures for assigning recognition and allocating funding should be designed to account for these factors. We study the annual production n_{i}(t) of a given scientist i by analyzing longitudinal career data for 200 leading scientists and 100 a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1204.0752","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":"2026-05-18T03:58:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6TcYY6xAajqnqC+YnmO/cyw6TTkAdZt3MpA3Ad5wFjEHFfSBHaTsx8k6AqH5YqwyfHS7MjA0f4dpdqHC4+c7Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T22:45:54.557785Z"},"content_sha256":"61ca2fd571991ff9784f579d864d3e74f5ee5cff9e25264c1fc47256427ced61","schema_version":"1.0","event_id":"sha256:61ca2fd571991ff9784f579d864d3e74f5ee5cff9e25264c1fc47256427ced61"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BK3OIIN7MPDOCBXAHT72LNFHAL/bundle.json","state_url":"https://pith.science/pith/BK3OIIN7MPDOCBXAHT72LNFHAL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BK3OIIN7MPDOCBXAHT72LNFHAL/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":"2026-05-29T22:45:54Z","links":{"resolver":"https://pith.science/pith/BK3OIIN7MPDOCBXAHT72LNFHAL","bundle":"https://pith.science/pith/BK3OIIN7MPDOCBXAHT72LNFHAL/bundle.json","state":"https://pith.science/pith/BK3OIIN7MPDOCBXAHT72LNFHAL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BK3OIIN7MPDOCBXAHT72LNFHAL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:BK3OIIN7MPDOCBXAHT72LNFHAL","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":"1f4356b221696cfc1994f41df3e7de453c1567f7ead37de6046a8da1a3026def","cross_cats_sorted":["cs.DL","physics.data-an"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.soc-ph","submitted_at":"2012-04-03T18:06:02Z","title_canon_sha256":"9a6ccf373298c95dff10fc1340c0a38a707a313468709cf6a6a9e9c18975f7e9"},"schema_version":"1.0","source":{"id":"1204.0752","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1204.0752","created_at":"2026-05-18T03:58:38Z"},{"alias_kind":"arxiv_version","alias_value":"1204.0752v1","created_at":"2026-05-18T03:58:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1204.0752","created_at":"2026-05-18T03:58:38Z"},{"alias_kind":"pith_short_12","alias_value":"BK3OIIN7MPDO","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_16","alias_value":"BK3OIIN7MPDOCBXA","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_8","alias_value":"BK3OIIN7","created_at":"2026-05-18T12:27:01Z"}],"graph_snapshots":[{"event_id":"sha256:61ca2fd571991ff9784f579d864d3e74f5ee5cff9e25264c1fc47256427ced61","target":"graph","created_at":"2026-05-18T03:58:38Z","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":"Understanding how institutional changes within academia may affect the overall potential of science requires a better quantitative representation of how careers evolve over time. Since knowledge spillovers, cumulative advantage, competition, and collaboration are distinctive features of the academic profession, both the employment relationship and the procedures for assigning recognition and allocating funding should be designed to account for these factors. We study the annual production n_{i}(t) of a given scientist i by analyzing longitudinal career data for 200 leading scientists and 100 a","authors_text":"Alexander M. Petersen, Fabio Pammolli, H. Eugene Stanley, Massimo Riccaboni","cross_cats":["cs.DL","physics.data-an"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.soc-ph","submitted_at":"2012-04-03T18:06:02Z","title":"Persistence and Uncertainty in the Academic Career"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1204.0752","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":"sha256:76ca6f1c43a3568170ed7d4dfc4208c6c98481ca91859cd05ece530c50dca34b","target":"record","created_at":"2026-05-18T03:58:38Z","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":"1f4356b221696cfc1994f41df3e7de453c1567f7ead37de6046a8da1a3026def","cross_cats_sorted":["cs.DL","physics.data-an"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.soc-ph","submitted_at":"2012-04-03T18:06:02Z","title_canon_sha256":"9a6ccf373298c95dff10fc1340c0a38a707a313468709cf6a6a9e9c18975f7e9"},"schema_version":"1.0","source":{"id":"1204.0752","kind":"arxiv","version":1}},"canonical_sha256":"0ab6e421bf63c6e106e03cffa5b4a702db708d4dfc05ab9b1ed5e2d4fee603c0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0ab6e421bf63c6e106e03cffa5b4a702db708d4dfc05ab9b1ed5e2d4fee603c0","first_computed_at":"2026-05-18T03:58:38.598494Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:58:38.598494Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"CLvNG45zVTCkd+7w8Ggrz+K64H3skvDx0lPs/sWnS5YvPKYGaJBysNJi18OPWgdFPnUCptjajZvbsJgOzaZrCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:58:38.598943Z","signed_message":"canonical_sha256_bytes"},"source_id":"1204.0752","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:76ca6f1c43a3568170ed7d4dfc4208c6c98481ca91859cd05ece530c50dca34b","sha256:61ca2fd571991ff9784f579d864d3e74f5ee5cff9e25264c1fc47256427ced61"],"state_sha256":"916eb7fb470609ba2b065ecd77f6ae13a9d3ba7ec2ff6eb9b170700dbf22b1b9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xn7wZaP2w6o/nTqDSbrzKsOV+q/J7zL6GaC8gy9xN056eOnh8qCsAyYONdslGaReJ42luNzQb7jxXw/1BJ8tCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-29T22:45:54.561932Z","bundle_sha256":"1a7c07f945cc10ab70970f6aabd97f8c973fbb4f054e47f8238fa936abe4d1c5"}}