{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:W3FRRKSQAN4KQRAZ3RPMYG5GQW","short_pith_number":"pith:W3FRRKSQ","canonical_record":{"source":{"id":"1308.0029","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.soc-ph","submitted_at":"2013-07-31T20:27:38Z","cross_cats_sorted":["cs.SI","physics.bio-ph"],"title_canon_sha256":"f7f840f3853648f87ed34ecb5d83c0854c08d4e26c11fd036e06c2cf5b272bdf","abstract_canon_sha256":"8bbd37e5b40b564b2497c132e6c32e346bf7f4e386c11888316b590b4fbeadf5"},"schema_version":"1.0"},"canonical_sha256":"b6cb18aa500378a84419dc5ecc1ba68584768a4d5521d46fed3573de9bf94fb1","source":{"kind":"arxiv","id":"1308.0029","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1308.0029","created_at":"2026-05-18T02:57:08Z"},{"alias_kind":"arxiv_version","alias_value":"1308.0029v1","created_at":"2026-05-18T02:57:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1308.0029","created_at":"2026-05-18T02:57:08Z"},{"alias_kind":"pith_short_12","alias_value":"W3FRRKSQAN4K","created_at":"2026-05-18T12:28:04Z"},{"alias_kind":"pith_short_16","alias_value":"W3FRRKSQAN4KQRAZ","created_at":"2026-05-18T12:28:04Z"},{"alias_kind":"pith_short_8","alias_value":"W3FRRKSQ","created_at":"2026-05-18T12:28:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:W3FRRKSQAN4KQRAZ3RPMYG5GQW","target":"record","payload":{"canonical_record":{"source":{"id":"1308.0029","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.soc-ph","submitted_at":"2013-07-31T20:27:38Z","cross_cats_sorted":["cs.SI","physics.bio-ph"],"title_canon_sha256":"f7f840f3853648f87ed34ecb5d83c0854c08d4e26c11fd036e06c2cf5b272bdf","abstract_canon_sha256":"8bbd37e5b40b564b2497c132e6c32e346bf7f4e386c11888316b590b4fbeadf5"},"schema_version":"1.0"},"canonical_sha256":"b6cb18aa500378a84419dc5ecc1ba68584768a4d5521d46fed3573de9bf94fb1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:57:08.793641Z","signature_b64":"VM1oVjrvR3id8EL2vtqKya7gXzP4bh3vEJybLZustbkO7IOIOM5mH7zi9w79FnOCEqR+ZB9APgdnNY3yRYpLAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b6cb18aa500378a84419dc5ecc1ba68584768a4d5521d46fed3573de9bf94fb1","last_reissued_at":"2026-05-18T02:57:08.792978Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:57:08.792978Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1308.0029","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":"2026-05-18T02:57:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TYDB7m9lrTvqusFEIS2eWpWZPA41pV7cctyCY9Cs2H9UhMHV83U+oAlPqkJ7xMX5ud+pkvf1C371UB5kHFgqDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T08:28:10.742356Z"},"content_sha256":"94d6bd63707f6052d307676a5b4de62a4e7d9c39b7c832c08dee01c13372ca72","schema_version":"1.0","event_id":"sha256:94d6bd63707f6052d307676a5b4de62a4e7d9c39b7c832c08dee01c13372ca72"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:W3FRRKSQAN4KQRAZ3RPMYG5GQW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Hierarchical self-organization of non-cooperating individuals","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.SI","physics.bio-ph"],"primary_cat":"physics.soc-ph","authors_text":"Tam\\'as Nepusz, Tam\\'as Vicsek","submitted_at":"2013-07-31T20:27:38Z","abstract_excerpt":"Hierarchy is one of the most conspicuous features of numerous natural, technological and social systems. The underlying structures are typically complex and their most relevant organizational principle is the ordering of the ties among the units they are made of according to a network displaying hierarchical features. In spite of the abundant presence of hierarchy no quantitative theoretical interpretation of the origins of a multi-level, knowledge-based social network exists. Here we introduce an approach which is capable of reproducing the emergence of a multi-levelled network structure base"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1308.0029","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":"2026-05-18T02:57:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"scTeW7Mo3hmV6cFEcvnM6gt4KrkblHZgTuTmq81uCoj08F5rsLe1fnlYmt6euuKyCG4TDhCHI+WOUYpNDITCAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T08:28:10.742713Z"},"content_sha256":"576d02ec8472dfa08314b0c51d05ba020f55b38e36a22b29dc4b02b6de4ab7ca","schema_version":"1.0","event_id":"sha256:576d02ec8472dfa08314b0c51d05ba020f55b38e36a22b29dc4b02b6de4ab7ca"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/W3FRRKSQAN4KQRAZ3RPMYG5GQW/bundle.json","state_url":"https://pith.science/pith/W3FRRKSQAN4KQRAZ3RPMYG5GQW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/W3FRRKSQAN4KQRAZ3RPMYG5GQW/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":"2026-06-02T08:28:10Z","links":{"resolver":"https://pith.science/pith/W3FRRKSQAN4KQRAZ3RPMYG5GQW","bundle":"https://pith.science/pith/W3FRRKSQAN4KQRAZ3RPMYG5GQW/bundle.json","state":"https://pith.science/pith/W3FRRKSQAN4KQRAZ3RPMYG5GQW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/W3FRRKSQAN4KQRAZ3RPMYG5GQW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:W3FRRKSQAN4KQRAZ3RPMYG5GQW","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":"8bbd37e5b40b564b2497c132e6c32e346bf7f4e386c11888316b590b4fbeadf5","cross_cats_sorted":["cs.SI","physics.bio-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.soc-ph","submitted_at":"2013-07-31T20:27:38Z","title_canon_sha256":"f7f840f3853648f87ed34ecb5d83c0854c08d4e26c11fd036e06c2cf5b272bdf"},"schema_version":"1.0","source":{"id":"1308.0029","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1308.0029","created_at":"2026-05-18T02:57:08Z"},{"alias_kind":"arxiv_version","alias_value":"1308.0029v1","created_at":"2026-05-18T02:57:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1308.0029","created_at":"2026-05-18T02:57:08Z"},{"alias_kind":"pith_short_12","alias_value":"W3FRRKSQAN4K","created_at":"2026-05-18T12:28:04Z"},{"alias_kind":"pith_short_16","alias_value":"W3FRRKSQAN4KQRAZ","created_at":"2026-05-18T12:28:04Z"},{"alias_kind":"pith_short_8","alias_value":"W3FRRKSQ","created_at":"2026-05-18T12:28:04Z"}],"graph_snapshots":[{"event_id":"sha256:576d02ec8472dfa08314b0c51d05ba020f55b38e36a22b29dc4b02b6de4ab7ca","target":"graph","created_at":"2026-05-18T02:57:08Z","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":"Hierarchy is one of the most conspicuous features of numerous natural, technological and social systems. The underlying structures are typically complex and their most relevant organizational principle is the ordering of the ties among the units they are made of according to a network displaying hierarchical features. In spite of the abundant presence of hierarchy no quantitative theoretical interpretation of the origins of a multi-level, knowledge-based social network exists. Here we introduce an approach which is capable of reproducing the emergence of a multi-levelled network structure base","authors_text":"Tam\\'as Nepusz, Tam\\'as Vicsek","cross_cats":["cs.SI","physics.bio-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.soc-ph","submitted_at":"2013-07-31T20:27:38Z","title":"Hierarchical self-organization of non-cooperating individuals"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1308.0029","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":"sha256:94d6bd63707f6052d307676a5b4de62a4e7d9c39b7c832c08dee01c13372ca72","target":"record","created_at":"2026-05-18T02:57:08Z","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":"8bbd37e5b40b564b2497c132e6c32e346bf7f4e386c11888316b590b4fbeadf5","cross_cats_sorted":["cs.SI","physics.bio-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.soc-ph","submitted_at":"2013-07-31T20:27:38Z","title_canon_sha256":"f7f840f3853648f87ed34ecb5d83c0854c08d4e26c11fd036e06c2cf5b272bdf"},"schema_version":"1.0","source":{"id":"1308.0029","kind":"arxiv","version":1}},"canonical_sha256":"b6cb18aa500378a84419dc5ecc1ba68584768a4d5521d46fed3573de9bf94fb1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b6cb18aa500378a84419dc5ecc1ba68584768a4d5521d46fed3573de9bf94fb1","first_computed_at":"2026-05-18T02:57:08.792978Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:57:08.792978Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"VM1oVjrvR3id8EL2vtqKya7gXzP4bh3vEJybLZustbkO7IOIOM5mH7zi9w79FnOCEqR+ZB9APgdnNY3yRYpLAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:57:08.793641Z","signed_message":"canonical_sha256_bytes"},"source_id":"1308.0029","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:94d6bd63707f6052d307676a5b4de62a4e7d9c39b7c832c08dee01c13372ca72","sha256:576d02ec8472dfa08314b0c51d05ba020f55b38e36a22b29dc4b02b6de4ab7ca"],"state_sha256":"2ad10fba8c506d492b33b16a5054d93b2212b39e40a66805ca831bf13abbc539"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZlIQu293GQLsNBG8i406LP0M5Gi8/aAdlzrgJzo4Yb0acdlDF60pgAvVzHAr5GCDQdZ7elRNzpupZs7LjBDBCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T08:28:10.744696Z","bundle_sha256":"82b0537e867bc2f52cbaa9c670b5b1df6557254860578c17efb5427e4c6a62da"}}