{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:26JIYP2IK3IIXBDBGCVTK3BILH","short_pith_number":"pith:26JIYP2I","canonical_record":{"source":{"id":"1611.03890","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.soc-ph","submitted_at":"2016-11-04T19:25:49Z","cross_cats_sorted":["cs.SI","physics.data-an","q-bio.QM"],"title_canon_sha256":"e5f685a2918ff43162014089c644b506a18ce8473f145a0e637a71a9f1cbdec3","abstract_canon_sha256":"fabf69df86f0ab74881765ad7a51f66fc537d52ebacb5969c45187a4a2589ad9"},"schema_version":"1.0"},"canonical_sha256":"d7928c3f4856d08b846130ab356c2859fb6129a74e66b17a00d1cefd4db55f84","source":{"kind":"arxiv","id":"1611.03890","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1611.03890","created_at":"2026-05-18T00:59:18Z"},{"alias_kind":"arxiv_version","alias_value":"1611.03890v1","created_at":"2026-05-18T00:59:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1611.03890","created_at":"2026-05-18T00:59:18Z"},{"alias_kind":"pith_short_12","alias_value":"26JIYP2IK3II","created_at":"2026-05-18T12:29:52Z"},{"alias_kind":"pith_short_16","alias_value":"26JIYP2IK3IIXBDB","created_at":"2026-05-18T12:29:52Z"},{"alias_kind":"pith_short_8","alias_value":"26JIYP2I","created_at":"2026-05-18T12:29:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:26JIYP2IK3IIXBDBGCVTK3BILH","target":"record","payload":{"canonical_record":{"source":{"id":"1611.03890","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.soc-ph","submitted_at":"2016-11-04T19:25:49Z","cross_cats_sorted":["cs.SI","physics.data-an","q-bio.QM"],"title_canon_sha256":"e5f685a2918ff43162014089c644b506a18ce8473f145a0e637a71a9f1cbdec3","abstract_canon_sha256":"fabf69df86f0ab74881765ad7a51f66fc537d52ebacb5969c45187a4a2589ad9"},"schema_version":"1.0"},"canonical_sha256":"d7928c3f4856d08b846130ab356c2859fb6129a74e66b17a00d1cefd4db55f84","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:59:18.149872Z","signature_b64":"BM4A5Jyojm1AZo+3ZACjRSZacSvMY7lFYbsGU8zmjyFJ4fkrrqSU1HYCLvaFZsz7w5+SXnU9Fk8rzcXur21pCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d7928c3f4856d08b846130ab356c2859fb6129a74e66b17a00d1cefd4db55f84","last_reissued_at":"2026-05-18T00:59:18.149185Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:59:18.149185Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1611.03890","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":"2026-05-18T00:59:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ytZ/CdYSWgYmyuJ4XOOFGtLjPV99wcxGMuIiEjzherq4ojA/OEsiULP7w5/VNH2kufATTsSbR4+vmT5X+bFsCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T18:00:10.695547Z"},"content_sha256":"26d4b534c305eb8979cf6cde298602f5a7dd0363f235cab3b0d286f7958e28be","schema_version":"1.0","event_id":"sha256:26d4b534c305eb8979cf6cde298602f5a7dd0363f235cab3b0d286f7958e28be"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:26JIYP2IK3IIXBDBGCVTK3BILH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Theory of Taxonomy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.SI","physics.data-an","q-bio.QM"],"primary_cat":"physics.soc-ph","authors_text":"Guido D'Amico, Matthew Kleban, Raul Rabadan","submitted_at":"2016-11-04T19:25:49Z","abstract_excerpt":"A taxonomy is a standardized framework to classify and organize items into categories. Hierarchical taxonomies are ubiquitous, ranging from the classification of organisms to the file system on a computer. Characterizing the typical distribution of items within taxonomic categories is an important question with applications in many disciplines. Ecologists have long sought to account for the patterns observed in species-abundance distributions (the number of individuals per species found in some sample), and computer scientists study the distribution of files per directory. Is there a universal"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1611.03890","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":"2026-05-18T00:59:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NnOs8vTm3Oym63xSKbPC4aehaUtXkF0+PEVs1TxQydbbf66rHFCQq1kTQo6Kxw+u8zyojMfWKfY13bDCIUcQDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T18:00:10.696185Z"},"content_sha256":"4619a534aa44da6b651bca5a41b9690b4fcd30d36a30ddb43672903f90929658","schema_version":"1.0","event_id":"sha256:4619a534aa44da6b651bca5a41b9690b4fcd30d36a30ddb43672903f90929658"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/26JIYP2IK3IIXBDBGCVTK3BILH/bundle.json","state_url":"https://pith.science/pith/26JIYP2IK3IIXBDBGCVTK3BILH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/26JIYP2IK3IIXBDBGCVTK3BILH/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":"2026-06-08T18:00:10Z","links":{"resolver":"https://pith.science/pith/26JIYP2IK3IIXBDBGCVTK3BILH","bundle":"https://pith.science/pith/26JIYP2IK3IIXBDBGCVTK3BILH/bundle.json","state":"https://pith.science/pith/26JIYP2IK3IIXBDBGCVTK3BILH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/26JIYP2IK3IIXBDBGCVTK3BILH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:26JIYP2IK3IIXBDBGCVTK3BILH","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":"fabf69df86f0ab74881765ad7a51f66fc537d52ebacb5969c45187a4a2589ad9","cross_cats_sorted":["cs.SI","physics.data-an","q-bio.QM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.soc-ph","submitted_at":"2016-11-04T19:25:49Z","title_canon_sha256":"e5f685a2918ff43162014089c644b506a18ce8473f145a0e637a71a9f1cbdec3"},"schema_version":"1.0","source":{"id":"1611.03890","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1611.03890","created_at":"2026-05-18T00:59:18Z"},{"alias_kind":"arxiv_version","alias_value":"1611.03890v1","created_at":"2026-05-18T00:59:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1611.03890","created_at":"2026-05-18T00:59:18Z"},{"alias_kind":"pith_short_12","alias_value":"26JIYP2IK3II","created_at":"2026-05-18T12:29:52Z"},{"alias_kind":"pith_short_16","alias_value":"26JIYP2IK3IIXBDB","created_at":"2026-05-18T12:29:52Z"},{"alias_kind":"pith_short_8","alias_value":"26JIYP2I","created_at":"2026-05-18T12:29:52Z"}],"graph_snapshots":[{"event_id":"sha256:4619a534aa44da6b651bca5a41b9690b4fcd30d36a30ddb43672903f90929658","target":"graph","created_at":"2026-05-18T00:59:18Z","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":"A taxonomy is a standardized framework to classify and organize items into categories. Hierarchical taxonomies are ubiquitous, ranging from the classification of organisms to the file system on a computer. Characterizing the typical distribution of items within taxonomic categories is an important question with applications in many disciplines. Ecologists have long sought to account for the patterns observed in species-abundance distributions (the number of individuals per species found in some sample), and computer scientists study the distribution of files per directory. Is there a universal","authors_text":"Guido D'Amico, Matthew Kleban, Raul Rabadan","cross_cats":["cs.SI","physics.data-an","q-bio.QM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.soc-ph","submitted_at":"2016-11-04T19:25:49Z","title":"A Theory of Taxonomy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1611.03890","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":"sha256:26d4b534c305eb8979cf6cde298602f5a7dd0363f235cab3b0d286f7958e28be","target":"record","created_at":"2026-05-18T00:59:18Z","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":"fabf69df86f0ab74881765ad7a51f66fc537d52ebacb5969c45187a4a2589ad9","cross_cats_sorted":["cs.SI","physics.data-an","q-bio.QM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.soc-ph","submitted_at":"2016-11-04T19:25:49Z","title_canon_sha256":"e5f685a2918ff43162014089c644b506a18ce8473f145a0e637a71a9f1cbdec3"},"schema_version":"1.0","source":{"id":"1611.03890","kind":"arxiv","version":1}},"canonical_sha256":"d7928c3f4856d08b846130ab356c2859fb6129a74e66b17a00d1cefd4db55f84","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d7928c3f4856d08b846130ab356c2859fb6129a74e66b17a00d1cefd4db55f84","first_computed_at":"2026-05-18T00:59:18.149185Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:59:18.149185Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"BM4A5Jyojm1AZo+3ZACjRSZacSvMY7lFYbsGU8zmjyFJ4fkrrqSU1HYCLvaFZsz7w5+SXnU9Fk8rzcXur21pCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:59:18.149872Z","signed_message":"canonical_sha256_bytes"},"source_id":"1611.03890","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:26d4b534c305eb8979cf6cde298602f5a7dd0363f235cab3b0d286f7958e28be","sha256:4619a534aa44da6b651bca5a41b9690b4fcd30d36a30ddb43672903f90929658"],"state_sha256":"564a99c7adad57e8b13227f44ac3c77c194c9106de61ff84997ebc03108cedcf"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"H4ZgivdEhaiyadEtxzkscUOYoGn3Rn6wMUZQlETCmyVr+Ad22vAlH3GrPnbVULLv+XLoEI1BfAbb4KaSBhTVDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-08T18:00:10.700257Z","bundle_sha256":"4b2f9548f330fe0634d5514c71721d3fa9bfa8ec5d450ac8db7e58d7c2884881"}}