{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:WAQHLJ5VI7WC7SPU5JIA35WBDF","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":"0bb49d8dc50313ee88672140ebb722512ab5a425368316ab37004902f7437c20","cross_cats_sorted":["physics.bio-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.PE","submitted_at":"2016-07-14T15:00:04Z","title_canon_sha256":"0a1d41ef9a67593ea7ae0420fabe9c8416e59d37fa021b9008f74c705a7a8b83"},"schema_version":"1.0","source":{"id":"1607.04158","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1607.04158","created_at":"2026-05-18T00:43:43Z"},{"alias_kind":"arxiv_version","alias_value":"1607.04158v1","created_at":"2026-05-18T00:43:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1607.04158","created_at":"2026-05-18T00:43:43Z"},{"alias_kind":"pith_short_12","alias_value":"WAQHLJ5VI7WC","created_at":"2026-05-18T12:30:48Z"},{"alias_kind":"pith_short_16","alias_value":"WAQHLJ5VI7WC7SPU","created_at":"2026-05-18T12:30:48Z"},{"alias_kind":"pith_short_8","alias_value":"WAQHLJ5V","created_at":"2026-05-18T12:30:48Z"}],"graph_snapshots":[{"event_id":"sha256:9ab85a6ec18dc98f701e5c8c3d79e08868ecca06bc67e6d5e68ab608f45e7164","target":"graph","created_at":"2026-05-18T00:43:43Z","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 Sheldon spectrum describes a remarkable regularity in aquatic ecosystems: the biomass density as a function of logarithmic body mass is approximately constant over many orders of magnitude. While size-spectrum models have explained this phenomenon for assemblages of multicellular organisms, this paper introduces a species-resolved size-spectrum model to explain the phenomenon in unicellular plankton. A Sheldon spectrum spanning the cell-size range of unicellular plankton necessarily consists of a large number of coexisting species covering a wide range of characteristic sizes. The coexiste","authors_text":"Gustav W. Delius, Jos\\'e A. Cuesta, Richard Law","cross_cats":["physics.bio-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.PE","submitted_at":"2016-07-14T15:00:04Z","title":"Sheldon Spectrum and the Plankton Paradox: Two Sides of the Same Coin. A trait-based plankton size-spectrum model"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1607.04158","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":"sha256:6334539d0db560f83ad1746199df4e0675fa633b27186315674968db0a79906e","target":"record","created_at":"2026-05-18T00:43:43Z","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":"0bb49d8dc50313ee88672140ebb722512ab5a425368316ab37004902f7437c20","cross_cats_sorted":["physics.bio-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.PE","submitted_at":"2016-07-14T15:00:04Z","title_canon_sha256":"0a1d41ef9a67593ea7ae0420fabe9c8416e59d37fa021b9008f74c705a7a8b83"},"schema_version":"1.0","source":{"id":"1607.04158","kind":"arxiv","version":1}},"canonical_sha256":"b02075a7b547ec2fc9f4ea500df6c119618a0f83340bc884403fce9994ad6ccb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b02075a7b547ec2fc9f4ea500df6c119618a0f83340bc884403fce9994ad6ccb","first_computed_at":"2026-05-18T00:43:43.563625Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:43:43.563625Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"/P34TlYuNtKkLlBLp0CA3L7H09WDXqLWqv3Xe+hNOwtt/KpQeWWUkOq13rHv/GDNahIvxLLgfcWC9fp66KLICw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:43:43.564137Z","signed_message":"canonical_sha256_bytes"},"source_id":"1607.04158","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6334539d0db560f83ad1746199df4e0675fa633b27186315674968db0a79906e","sha256:9ab85a6ec18dc98f701e5c8c3d79e08868ecca06bc67e6d5e68ab608f45e7164"],"state_sha256":"6e67d34a99ab94f2249bb45a60cbb8227d13d771ea456634aeb7822d62c5bafc"}