{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2008:YYBCZ5RNSRIKEPPNOAUEX6Y22I","short_pith_number":"pith:YYBCZ5RN","canonical_record":{"source":{"id":"0808.0287","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.PE","submitted_at":"2008-08-03T02:22:30Z","cross_cats_sorted":["q-bio.QM"],"title_canon_sha256":"d91f538cca9ee8500780b68e3d7bfabbc28fe946adc3040dd82c51d2ee377e62","abstract_canon_sha256":"1b733c1e79566d6c799ffafadc72fb9324e36c9182e9509e0b38b453ae61f3ba"},"schema_version":"1.0"},"canonical_sha256":"c6022cf62d9450a23ded70284bfb1ad237c644825949747c1d8af4df47b1ab98","source":{"kind":"arxiv","id":"0808.0287","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0808.0287","created_at":"2026-05-18T04:11:49Z"},{"alias_kind":"arxiv_version","alias_value":"0808.0287v1","created_at":"2026-05-18T04:11:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0808.0287","created_at":"2026-05-18T04:11:49Z"},{"alias_kind":"pith_short_12","alias_value":"YYBCZ5RNSRIK","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"YYBCZ5RNSRIKEPPN","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"YYBCZ5RN","created_at":"2026-05-18T12:25:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2008:YYBCZ5RNSRIKEPPNOAUEX6Y22I","target":"record","payload":{"canonical_record":{"source":{"id":"0808.0287","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.PE","submitted_at":"2008-08-03T02:22:30Z","cross_cats_sorted":["q-bio.QM"],"title_canon_sha256":"d91f538cca9ee8500780b68e3d7bfabbc28fe946adc3040dd82c51d2ee377e62","abstract_canon_sha256":"1b733c1e79566d6c799ffafadc72fb9324e36c9182e9509e0b38b453ae61f3ba"},"schema_version":"1.0"},"canonical_sha256":"c6022cf62d9450a23ded70284bfb1ad237c644825949747c1d8af4df47b1ab98","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:11:49.404461Z","signature_b64":"i981osck3KR8iQHp3m64xpesN/NzH4yZ6Sz9ojOvtlTiNYPHp2qCVon3tlnTaryjgEPTH0IeFDcj5218b60lDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c6022cf62d9450a23ded70284bfb1ad237c644825949747c1d8af4df47b1ab98","last_reissued_at":"2026-05-18T04:11:49.403944Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:11:49.403944Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0808.0287","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":"2026-05-18T04:11:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oMRquyO+TKAkLrHb4ir2X7PSX5ID4Bc4uAWzNPLYENEZlxUz4g+cM7ZHvRRdlGislFZzz3XYHmvO33NZlnNgAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T01:39:10.184620Z"},"content_sha256":"0205a152316d5f231563fa9bf2769847e65bc672524f325245fea90c5becfead","schema_version":"1.0","event_id":"sha256:0205a152316d5f231563fa9bf2769847e65bc672524f325245fea90c5becfead"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2008:YYBCZ5RNSRIKEPPNOAUEX6Y22I","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Mathematical Models and Biological Meaning: Taking Trees Seriously","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["q-bio.QM"],"primary_cat":"q-bio.PE","authors_text":"E. O. Wiley, Jeremy L. Martin","submitted_at":"2008-08-03T02:22:30Z","abstract_excerpt":"We compare three basic kinds of discrete mathematical models used to portray phylogenetic relationships among species and higher taxa: phylogenetic trees, Hennig trees and Nelson cladograms. All three models are trees, as that term is commonly used in mathematics; the difference between them lies in the biological interpretation of their vertices and edges. Phylogenetic trees and Hennig trees carry exactly the same information, and translation between these two kinds of trees can be accomplished by a simple algorithm. On the other hand, evolutionary concepts such as monophyly are represented a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0808.0287","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":"2026-05-18T04:11:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lqttLR8x1p126SEr3X6QS5SEL683XPAeAPzYof5160OG968Lwc3ztIbueWqbC39cXYkWmVTMsV0uLAiI/PUXDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T01:39:10.184960Z"},"content_sha256":"3bab4ed17217e9ff320870d18e47c407d08a01fb6a93478b6347f2196007dd62","schema_version":"1.0","event_id":"sha256:3bab4ed17217e9ff320870d18e47c407d08a01fb6a93478b6347f2196007dd62"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YYBCZ5RNSRIKEPPNOAUEX6Y22I/bundle.json","state_url":"https://pith.science/pith/YYBCZ5RNSRIKEPPNOAUEX6Y22I/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YYBCZ5RNSRIKEPPNOAUEX6Y22I/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":"2026-06-05T01:39:10Z","links":{"resolver":"https://pith.science/pith/YYBCZ5RNSRIKEPPNOAUEX6Y22I","bundle":"https://pith.science/pith/YYBCZ5RNSRIKEPPNOAUEX6Y22I/bundle.json","state":"https://pith.science/pith/YYBCZ5RNSRIKEPPNOAUEX6Y22I/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YYBCZ5RNSRIKEPPNOAUEX6Y22I/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:YYBCZ5RNSRIKEPPNOAUEX6Y22I","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":"1b733c1e79566d6c799ffafadc72fb9324e36c9182e9509e0b38b453ae61f3ba","cross_cats_sorted":["q-bio.QM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.PE","submitted_at":"2008-08-03T02:22:30Z","title_canon_sha256":"d91f538cca9ee8500780b68e3d7bfabbc28fe946adc3040dd82c51d2ee377e62"},"schema_version":"1.0","source":{"id":"0808.0287","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0808.0287","created_at":"2026-05-18T04:11:49Z"},{"alias_kind":"arxiv_version","alias_value":"0808.0287v1","created_at":"2026-05-18T04:11:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0808.0287","created_at":"2026-05-18T04:11:49Z"},{"alias_kind":"pith_short_12","alias_value":"YYBCZ5RNSRIK","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"YYBCZ5RNSRIKEPPN","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"YYBCZ5RN","created_at":"2026-05-18T12:25:58Z"}],"graph_snapshots":[{"event_id":"sha256:3bab4ed17217e9ff320870d18e47c407d08a01fb6a93478b6347f2196007dd62","target":"graph","created_at":"2026-05-18T04:11:49Z","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 compare three basic kinds of discrete mathematical models used to portray phylogenetic relationships among species and higher taxa: phylogenetic trees, Hennig trees and Nelson cladograms. All three models are trees, as that term is commonly used in mathematics; the difference between them lies in the biological interpretation of their vertices and edges. Phylogenetic trees and Hennig trees carry exactly the same information, and translation between these two kinds of trees can be accomplished by a simple algorithm. On the other hand, evolutionary concepts such as monophyly are represented a","authors_text":"E. O. Wiley, Jeremy L. Martin","cross_cats":["q-bio.QM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.PE","submitted_at":"2008-08-03T02:22:30Z","title":"Mathematical Models and Biological Meaning: Taking Trees Seriously"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0808.0287","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":"sha256:0205a152316d5f231563fa9bf2769847e65bc672524f325245fea90c5becfead","target":"record","created_at":"2026-05-18T04:11:49Z","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":"1b733c1e79566d6c799ffafadc72fb9324e36c9182e9509e0b38b453ae61f3ba","cross_cats_sorted":["q-bio.QM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.PE","submitted_at":"2008-08-03T02:22:30Z","title_canon_sha256":"d91f538cca9ee8500780b68e3d7bfabbc28fe946adc3040dd82c51d2ee377e62"},"schema_version":"1.0","source":{"id":"0808.0287","kind":"arxiv","version":1}},"canonical_sha256":"c6022cf62d9450a23ded70284bfb1ad237c644825949747c1d8af4df47b1ab98","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c6022cf62d9450a23ded70284bfb1ad237c644825949747c1d8af4df47b1ab98","first_computed_at":"2026-05-18T04:11:49.403944Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:11:49.403944Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"i981osck3KR8iQHp3m64xpesN/NzH4yZ6Sz9ojOvtlTiNYPHp2qCVon3tlnTaryjgEPTH0IeFDcj5218b60lDA==","signature_status":"signed_v1","signed_at":"2026-05-18T04:11:49.404461Z","signed_message":"canonical_sha256_bytes"},"source_id":"0808.0287","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0205a152316d5f231563fa9bf2769847e65bc672524f325245fea90c5becfead","sha256:3bab4ed17217e9ff320870d18e47c407d08a01fb6a93478b6347f2196007dd62"],"state_sha256":"21dd2e9e26369ebf0f74523866001194302b91d3c5dbbe8cf658b1ccbb98d799"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EaDodKe+pRCHk121qkqIPzT5zV62G/q+Ntmblb7IV4SDL55QFMyY1ySY8IG8rW8yMKQMRFsMHLwIecieMj01Dw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T01:39:10.187089Z","bundle_sha256":"0a38d231fe8e044aab2d4a0152b910ae0fcfcdb3641bc95c8eda44bd0f5ceba3"}}