{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:OZ7BHGOUASLTOBFTYVNILSFUJT","short_pith_number":"pith:OZ7BHGOU","canonical_record":{"source":{"id":"1810.12624","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DL","submitted_at":"2018-10-30T10:17:10Z","cross_cats_sorted":[],"title_canon_sha256":"9c393d5a4b0af2965b5631f290c6f49bdd96902bc099101afd9b2cea27c9735a","abstract_canon_sha256":"8002726e9a30d8ce4310aac2068c57dc1588246f97651b1279ae3583982e8a9e"},"schema_version":"1.0"},"canonical_sha256":"767e1399d404973704b3c55a85c8b44cc2dde62480d28bdc45d3858e7caac143","source":{"kind":"arxiv","id":"1810.12624","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1810.12624","created_at":"2026-05-18T00:01:56Z"},{"alias_kind":"arxiv_version","alias_value":"1810.12624v1","created_at":"2026-05-18T00:01:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1810.12624","created_at":"2026-05-18T00:01:56Z"},{"alias_kind":"pith_short_12","alias_value":"OZ7BHGOUASLT","created_at":"2026-05-18T12:32:43Z"},{"alias_kind":"pith_short_16","alias_value":"OZ7BHGOUASLTOBFT","created_at":"2026-05-18T12:32:43Z"},{"alias_kind":"pith_short_8","alias_value":"OZ7BHGOU","created_at":"2026-05-18T12:32:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:OZ7BHGOUASLTOBFTYVNILSFUJT","target":"record","payload":{"canonical_record":{"source":{"id":"1810.12624","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DL","submitted_at":"2018-10-30T10:17:10Z","cross_cats_sorted":[],"title_canon_sha256":"9c393d5a4b0af2965b5631f290c6f49bdd96902bc099101afd9b2cea27c9735a","abstract_canon_sha256":"8002726e9a30d8ce4310aac2068c57dc1588246f97651b1279ae3583982e8a9e"},"schema_version":"1.0"},"canonical_sha256":"767e1399d404973704b3c55a85c8b44cc2dde62480d28bdc45d3858e7caac143","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:01:56.494657Z","signature_b64":"l/JOsEoiPOthrJvxCPc6coGr8gWL7w4GoPnc4JRODw5KDuaiXGbWFW1Fh7192suLzYb206bdPk6BJegkZHZVCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"767e1399d404973704b3c55a85c8b44cc2dde62480d28bdc45d3858e7caac143","last_reissued_at":"2026-05-18T00:01:56.494248Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:01:56.494248Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1810.12624","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":"2026-05-18T00:01:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sVGrzu2Dsln913a8CYXAeJbhKnjbxFVAtbvmIoG33hm6V77T5sm1e9rEKtOaRVyMLVQN/+9GRFSy/XXpFvQ4Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T23:47:32.716999Z"},"content_sha256":"7b9f4f1f9428b7b12efb3ba1d18237f51d69dfc318bd690db997ac6bd688af92","schema_version":"1.0","event_id":"sha256:7b9f4f1f9428b7b12efb3ba1d18237f51d69dfc318bd690db997ac6bd688af92"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:OZ7BHGOUASLTOBFTYVNILSFUJT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"An investigation on the skewness patterns and fractal nature of research productivity distributions at field and discipline level","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.DL","authors_text":"Anastasiia Soldatenkova, Ciriaco Andrea D'Angelo, Giovanni Abramo","submitted_at":"2018-10-30T10:17:10Z","abstract_excerpt":"The paper provides an empirical examination of how research productivity distributions differ across scientific fields and disciplines. Productivity is measured using the FSS indicator, which embeds both quantity and impact of output. The population studied consists of over 31,000 scientists in 180 fields (10 aggregate disciplines) of a national research system. The Characteristic Scores and Scale technique is used to investigate the distribution patterns for the different fields and disciplines. Research productivity distributions are found to be asymmetrical at the field level, although the "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1810.12624","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":"2026-05-18T00:01:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3u0rZ6sOa/9CaYSzi0nf/WDpZDD8BFM7MRgZTxl1OkIO2IcXuMHS6e8kcbeU6yCjUJfqufUe2UxrpptxT/96CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T23:47:32.717768Z"},"content_sha256":"d2d4bd5cfc89d8a17e34eabf44647a36e73bd954e2ed0d049ca1ae8f6040c9c5","schema_version":"1.0","event_id":"sha256:d2d4bd5cfc89d8a17e34eabf44647a36e73bd954e2ed0d049ca1ae8f6040c9c5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OZ7BHGOUASLTOBFTYVNILSFUJT/bundle.json","state_url":"https://pith.science/pith/OZ7BHGOUASLTOBFTYVNILSFUJT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OZ7BHGOUASLTOBFTYVNILSFUJT/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":"2026-06-09T23:47:32Z","links":{"resolver":"https://pith.science/pith/OZ7BHGOUASLTOBFTYVNILSFUJT","bundle":"https://pith.science/pith/OZ7BHGOUASLTOBFTYVNILSFUJT/bundle.json","state":"https://pith.science/pith/OZ7BHGOUASLTOBFTYVNILSFUJT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OZ7BHGOUASLTOBFTYVNILSFUJT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:OZ7BHGOUASLTOBFTYVNILSFUJT","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":"8002726e9a30d8ce4310aac2068c57dc1588246f97651b1279ae3583982e8a9e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DL","submitted_at":"2018-10-30T10:17:10Z","title_canon_sha256":"9c393d5a4b0af2965b5631f290c6f49bdd96902bc099101afd9b2cea27c9735a"},"schema_version":"1.0","source":{"id":"1810.12624","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1810.12624","created_at":"2026-05-18T00:01:56Z"},{"alias_kind":"arxiv_version","alias_value":"1810.12624v1","created_at":"2026-05-18T00:01:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1810.12624","created_at":"2026-05-18T00:01:56Z"},{"alias_kind":"pith_short_12","alias_value":"OZ7BHGOUASLT","created_at":"2026-05-18T12:32:43Z"},{"alias_kind":"pith_short_16","alias_value":"OZ7BHGOUASLTOBFT","created_at":"2026-05-18T12:32:43Z"},{"alias_kind":"pith_short_8","alias_value":"OZ7BHGOU","created_at":"2026-05-18T12:32:43Z"}],"graph_snapshots":[{"event_id":"sha256:d2d4bd5cfc89d8a17e34eabf44647a36e73bd954e2ed0d049ca1ae8f6040c9c5","target":"graph","created_at":"2026-05-18T00:01:56Z","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":"The paper provides an empirical examination of how research productivity distributions differ across scientific fields and disciplines. Productivity is measured using the FSS indicator, which embeds both quantity and impact of output. The population studied consists of over 31,000 scientists in 180 fields (10 aggregate disciplines) of a national research system. The Characteristic Scores and Scale technique is used to investigate the distribution patterns for the different fields and disciplines. Research productivity distributions are found to be asymmetrical at the field level, although the ","authors_text":"Anastasiia Soldatenkova, Ciriaco Andrea D'Angelo, Giovanni Abramo","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DL","submitted_at":"2018-10-30T10:17:10Z","title":"An investigation on the skewness patterns and fractal nature of research productivity distributions at field and discipline level"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1810.12624","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":"sha256:7b9f4f1f9428b7b12efb3ba1d18237f51d69dfc318bd690db997ac6bd688af92","target":"record","created_at":"2026-05-18T00:01:56Z","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":"8002726e9a30d8ce4310aac2068c57dc1588246f97651b1279ae3583982e8a9e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DL","submitted_at":"2018-10-30T10:17:10Z","title_canon_sha256":"9c393d5a4b0af2965b5631f290c6f49bdd96902bc099101afd9b2cea27c9735a"},"schema_version":"1.0","source":{"id":"1810.12624","kind":"arxiv","version":1}},"canonical_sha256":"767e1399d404973704b3c55a85c8b44cc2dde62480d28bdc45d3858e7caac143","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"767e1399d404973704b3c55a85c8b44cc2dde62480d28bdc45d3858e7caac143","first_computed_at":"2026-05-18T00:01:56.494248Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:01:56.494248Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"l/JOsEoiPOthrJvxCPc6coGr8gWL7w4GoPnc4JRODw5KDuaiXGbWFW1Fh7192suLzYb206bdPk6BJegkZHZVCA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:01:56.494657Z","signed_message":"canonical_sha256_bytes"},"source_id":"1810.12624","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7b9f4f1f9428b7b12efb3ba1d18237f51d69dfc318bd690db997ac6bd688af92","sha256:d2d4bd5cfc89d8a17e34eabf44647a36e73bd954e2ed0d049ca1ae8f6040c9c5"],"state_sha256":"2ceff8bb6a826e45a951477df8eb1aea11b6c25a14d8843afe5f2e304fc02c00"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"X9/FZCGhXZ0w2JJ/WuoGEPJnRricyWaAqqXaL31qLiOsyzCVVaVORIRGmb3VTmtfH3z618H+LrQDrsHevd7uBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-09T23:47:32.721587Z","bundle_sha256":"c3f15a236dfbc83bb40b449cfe51c38f80a566c44a4949c89ab90f55c38d49e9"}}