{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:PTK3TLQYQ5SNDV5YXIW45XHAVT","short_pith_number":"pith:PTK3TLQY","canonical_record":{"source":{"id":"1302.5803","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.PE","submitted_at":"2013-02-23T14:18:51Z","cross_cats_sorted":["physics.bio-ph"],"title_canon_sha256":"8c8c38b1dbff947daed6582c0ba603b857a0c678c5ea3fb748d031f516fb64c5","abstract_canon_sha256":"ac881978eb0b573ccda3c39650aa4546a2ce7bd59ead43cb7a0889d4b434c56e"},"schema_version":"1.0"},"canonical_sha256":"7cd5b9ae188764d1d7b8ba2dcedce0acfa30cca2fa6658e686db989c07954122","source":{"kind":"arxiv","id":"1302.5803","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1302.5803","created_at":"2026-05-18T03:12:46Z"},{"alias_kind":"arxiv_version","alias_value":"1302.5803v1","created_at":"2026-05-18T03:12:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1302.5803","created_at":"2026-05-18T03:12:46Z"},{"alias_kind":"pith_short_12","alias_value":"PTK3TLQYQ5SN","created_at":"2026-05-18T12:27:57Z"},{"alias_kind":"pith_short_16","alias_value":"PTK3TLQYQ5SNDV5Y","created_at":"2026-05-18T12:27:57Z"},{"alias_kind":"pith_short_8","alias_value":"PTK3TLQY","created_at":"2026-05-18T12:27:57Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:PTK3TLQYQ5SNDV5YXIW45XHAVT","target":"record","payload":{"canonical_record":{"source":{"id":"1302.5803","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.PE","submitted_at":"2013-02-23T14:18:51Z","cross_cats_sorted":["physics.bio-ph"],"title_canon_sha256":"8c8c38b1dbff947daed6582c0ba603b857a0c678c5ea3fb748d031f516fb64c5","abstract_canon_sha256":"ac881978eb0b573ccda3c39650aa4546a2ce7bd59ead43cb7a0889d4b434c56e"},"schema_version":"1.0"},"canonical_sha256":"7cd5b9ae188764d1d7b8ba2dcedce0acfa30cca2fa6658e686db989c07954122","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:12:46.329274Z","signature_b64":"9Y4l0YQSuhI/GVvgqa7CboaNShqkHtR3wpMiW20PD8Fs5+oUxtcKmGG3ts/NkSZPQKtwuUHs5Tbe2JQ8U+JjDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7cd5b9ae188764d1d7b8ba2dcedce0acfa30cca2fa6658e686db989c07954122","last_reissued_at":"2026-05-18T03:12:46.328701Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:12:46.328701Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1302.5803","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":"2026-05-18T03:12:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XGjvWYqoZ6vnGuQiXF6w75jI1hC2QijoMj7s1xmsw9gZO5S7viQewui0l5JEEeXAShpdztaBtQHQ+6C1xXG9Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T22:35:29.425638Z"},"content_sha256":"2df04d09a64c75e74315d1c1f9e1df35142fdffb4235d3934b77e22da4f17651","schema_version":"1.0","event_id":"sha256:2df04d09a64c75e74315d1c1f9e1df35142fdffb4235d3934b77e22da4f17651"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:PTK3TLQYQ5SNDV5YXIW45XHAVT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Allometry and Dissipation of Ecological Flow Networks","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.bio-ph"],"primary_cat":"q-bio.PE","authors_text":"Jiang Zhang, Lingfei Wu","submitted_at":"2013-02-23T14:18:51Z","abstract_excerpt":"An ecological flow network is a weighted directed graph in which nodes are species, edges are \"who eats whom\" relationships and weights are rates of energy or nutrients transfer between species. Allometric scaling is a ubiquitous feature for flow systems like river basins, vascular networks and food webs. By \"ecological network analysis\" method, we can reveal the hidden allometry directly on the original flow networks without cutting edges. On the other hand, dissipation law, which is another significant scaling relationship between the energy dissipation (respiration) and the throughflow of a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1302.5803","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":"2026-05-18T03:12:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8Mi5PI2Tvi/8u6YX0fwqHy2V6UC3s3ElYDfKSgI1k81Y8NTrlxqKxHW7rFLcVJTyHoOiuurRl90GFFoz8dBfAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T22:35:29.425997Z"},"content_sha256":"7c60dc8092ad96e2a1d5cfc82a0ef29518f66fe4c6607486c0152a95a80d1e42","schema_version":"1.0","event_id":"sha256:7c60dc8092ad96e2a1d5cfc82a0ef29518f66fe4c6607486c0152a95a80d1e42"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PTK3TLQYQ5SNDV5YXIW45XHAVT/bundle.json","state_url":"https://pith.science/pith/PTK3TLQYQ5SNDV5YXIW45XHAVT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PTK3TLQYQ5SNDV5YXIW45XHAVT/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":"2026-05-31T22:35:29Z","links":{"resolver":"https://pith.science/pith/PTK3TLQYQ5SNDV5YXIW45XHAVT","bundle":"https://pith.science/pith/PTK3TLQYQ5SNDV5YXIW45XHAVT/bundle.json","state":"https://pith.science/pith/PTK3TLQYQ5SNDV5YXIW45XHAVT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PTK3TLQYQ5SNDV5YXIW45XHAVT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:PTK3TLQYQ5SNDV5YXIW45XHAVT","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":"ac881978eb0b573ccda3c39650aa4546a2ce7bd59ead43cb7a0889d4b434c56e","cross_cats_sorted":["physics.bio-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.PE","submitted_at":"2013-02-23T14:18:51Z","title_canon_sha256":"8c8c38b1dbff947daed6582c0ba603b857a0c678c5ea3fb748d031f516fb64c5"},"schema_version":"1.0","source":{"id":"1302.5803","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1302.5803","created_at":"2026-05-18T03:12:46Z"},{"alias_kind":"arxiv_version","alias_value":"1302.5803v1","created_at":"2026-05-18T03:12:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1302.5803","created_at":"2026-05-18T03:12:46Z"},{"alias_kind":"pith_short_12","alias_value":"PTK3TLQYQ5SN","created_at":"2026-05-18T12:27:57Z"},{"alias_kind":"pith_short_16","alias_value":"PTK3TLQYQ5SNDV5Y","created_at":"2026-05-18T12:27:57Z"},{"alias_kind":"pith_short_8","alias_value":"PTK3TLQY","created_at":"2026-05-18T12:27:57Z"}],"graph_snapshots":[{"event_id":"sha256:7c60dc8092ad96e2a1d5cfc82a0ef29518f66fe4c6607486c0152a95a80d1e42","target":"graph","created_at":"2026-05-18T03:12:46Z","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":"An ecological flow network is a weighted directed graph in which nodes are species, edges are \"who eats whom\" relationships and weights are rates of energy or nutrients transfer between species. Allometric scaling is a ubiquitous feature for flow systems like river basins, vascular networks and food webs. By \"ecological network analysis\" method, we can reveal the hidden allometry directly on the original flow networks without cutting edges. On the other hand, dissipation law, which is another significant scaling relationship between the energy dissipation (respiration) and the throughflow of a","authors_text":"Jiang Zhang, Lingfei Wu","cross_cats":["physics.bio-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.PE","submitted_at":"2013-02-23T14:18:51Z","title":"Allometry and Dissipation of Ecological Flow Networks"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1302.5803","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":"sha256:2df04d09a64c75e74315d1c1f9e1df35142fdffb4235d3934b77e22da4f17651","target":"record","created_at":"2026-05-18T03:12:46Z","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":"ac881978eb0b573ccda3c39650aa4546a2ce7bd59ead43cb7a0889d4b434c56e","cross_cats_sorted":["physics.bio-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.PE","submitted_at":"2013-02-23T14:18:51Z","title_canon_sha256":"8c8c38b1dbff947daed6582c0ba603b857a0c678c5ea3fb748d031f516fb64c5"},"schema_version":"1.0","source":{"id":"1302.5803","kind":"arxiv","version":1}},"canonical_sha256":"7cd5b9ae188764d1d7b8ba2dcedce0acfa30cca2fa6658e686db989c07954122","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7cd5b9ae188764d1d7b8ba2dcedce0acfa30cca2fa6658e686db989c07954122","first_computed_at":"2026-05-18T03:12:46.328701Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:12:46.328701Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9Y4l0YQSuhI/GVvgqa7CboaNShqkHtR3wpMiW20PD8Fs5+oUxtcKmGG3ts/NkSZPQKtwuUHs5Tbe2JQ8U+JjDg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:12:46.329274Z","signed_message":"canonical_sha256_bytes"},"source_id":"1302.5803","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2df04d09a64c75e74315d1c1f9e1df35142fdffb4235d3934b77e22da4f17651","sha256:7c60dc8092ad96e2a1d5cfc82a0ef29518f66fe4c6607486c0152a95a80d1e42"],"state_sha256":"bd079291ea637883a99b37467296f82e0c50ae1fe0e24970e63953c76998b044"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2tBrF1esU2gE6p8gOUu1n0dNXWjN2G22dwMv8+LK61ndzXoA0qnz3H0EfRNTZ+TCxzt2v3pKCfuP66A0K2sqBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T22:35:29.428477Z","bundle_sha256":"ccefb981d1a1997d636df04df6eb411e94ef67a96adda042cfe6a0377d559dc6"}}