{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:GFDE4SVFRFOWET37CTPHZCXUCO","short_pith_number":"pith:GFDE4SVF","canonical_record":{"source":{"id":"1209.2588","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2012-09-12T12:27:33Z","cross_cats_sorted":["cond-mat.stat-mech","q-bio.PE"],"title_canon_sha256":"b5613968127238fe12d9adf5fb764cf7bfc4502bc67299404b7eccae2461ca2f","abstract_canon_sha256":"21e9821eb0e6e5a30ca11eff403d91bd0e85a257baccc47aae0a4aecc5a13fdf"},"schema_version":"1.0"},"canonical_sha256":"31464e4aa5895d624f7f14de7c8af413b610d2c9fc92f4a05e97402359cd30c5","source":{"kind":"arxiv","id":"1209.2588","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1209.2588","created_at":"2026-05-18T03:14:41Z"},{"alias_kind":"arxiv_version","alias_value":"1209.2588v2","created_at":"2026-05-18T03:14:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1209.2588","created_at":"2026-05-18T03:14:41Z"},{"alias_kind":"pith_short_12","alias_value":"GFDE4SVFRFOW","created_at":"2026-05-18T12:27:06Z"},{"alias_kind":"pith_short_16","alias_value":"GFDE4SVFRFOWET37","created_at":"2026-05-18T12:27:06Z"},{"alias_kind":"pith_short_8","alias_value":"GFDE4SVF","created_at":"2026-05-18T12:27:06Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:GFDE4SVFRFOWET37CTPHZCXUCO","target":"record","payload":{"canonical_record":{"source":{"id":"1209.2588","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2012-09-12T12:27:33Z","cross_cats_sorted":["cond-mat.stat-mech","q-bio.PE"],"title_canon_sha256":"b5613968127238fe12d9adf5fb764cf7bfc4502bc67299404b7eccae2461ca2f","abstract_canon_sha256":"21e9821eb0e6e5a30ca11eff403d91bd0e85a257baccc47aae0a4aecc5a13fdf"},"schema_version":"1.0"},"canonical_sha256":"31464e4aa5895d624f7f14de7c8af413b610d2c9fc92f4a05e97402359cd30c5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:14:41.068191Z","signature_b64":"0SKd+8U11eIPFolCsZcQfXMKAKr037EksLAn2UNeFhlMSIfUmRD7tIR8/sUwqLNtoebOZvzp8XZm5gsrr0CABg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"31464e4aa5895d624f7f14de7c8af413b610d2c9fc92f4a05e97402359cd30c5","last_reissued_at":"2026-05-18T03:14:41.067521Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:14:41.067521Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1209.2588","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:14:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"m0tze1d9nuBhNBrlbZUN4eCrNmsgl9MCEDT05Im+I7jW6rAa+P58se/TETthdd1wm/f+P++yo4TDF0E7rOf5Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T10:57:06.944833Z"},"content_sha256":"85c3c3fbebf007915460d86a1dafd00af47ef92382ce2c2a037a52de8a0d3f9a","schema_version":"1.0","event_id":"sha256:85c3c3fbebf007915460d86a1dafd00af47ef92382ce2c2a037a52de8a0d3f9a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:GFDE4SVFRFOWET37CTPHZCXUCO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Demographic noise and resilience in a semi-arid ecosystem model","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.stat-mech","q-bio.PE"],"primary_cat":"physics.bio-ph","authors_text":"Alan J. McKane, John Realpe-Gomez, Mara Baudena, Max Rietkerk, Tobias Galla","submitted_at":"2012-09-12T12:27:33Z","abstract_excerpt":"The scarcity of water characterising drylands forces vegetation to adopt appropriate survival strategies. Some of these generate water-vegetation feedback mechanisms that can lead to spatial self-organisation of vegetation, as it has been shown with models representing plants by a density of biomass, varying continuously in time and space. However, although plants are usually quite plastic they also display discrete qualities and stochastic behaviour. These features may give rise to demographic noise, which in certain cases can influence the qualitative dynamics of ecosystem models. In the pre"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1209.2588","kind":"arxiv","version":2},"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":"2026-05-18T03:14:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ne6ZyfJppAZ2cVhFwVtUnN/LhCouFlzTETKBDwDcOEH5HAsUND9anvso54PY977IDyuVhOLC/H7CM7yWHSFpBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T10:57:06.945479Z"},"content_sha256":"ec364ebd2c1637a8e836d7ba621cd23465c9a4b2ec734f25cc5ced406057f179","schema_version":"1.0","event_id":"sha256:ec364ebd2c1637a8e836d7ba621cd23465c9a4b2ec734f25cc5ced406057f179"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GFDE4SVFRFOWET37CTPHZCXUCO/bundle.json","state_url":"https://pith.science/pith/GFDE4SVFRFOWET37CTPHZCXUCO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GFDE4SVFRFOWET37CTPHZCXUCO/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":"2026-05-27T10:57:06Z","links":{"resolver":"https://pith.science/pith/GFDE4SVFRFOWET37CTPHZCXUCO","bundle":"https://pith.science/pith/GFDE4SVFRFOWET37CTPHZCXUCO/bundle.json","state":"https://pith.science/pith/GFDE4SVFRFOWET37CTPHZCXUCO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GFDE4SVFRFOWET37CTPHZCXUCO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:GFDE4SVFRFOWET37CTPHZCXUCO","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":"21e9821eb0e6e5a30ca11eff403d91bd0e85a257baccc47aae0a4aecc5a13fdf","cross_cats_sorted":["cond-mat.stat-mech","q-bio.PE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2012-09-12T12:27:33Z","title_canon_sha256":"b5613968127238fe12d9adf5fb764cf7bfc4502bc67299404b7eccae2461ca2f"},"schema_version":"1.0","source":{"id":"1209.2588","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1209.2588","created_at":"2026-05-18T03:14:41Z"},{"alias_kind":"arxiv_version","alias_value":"1209.2588v2","created_at":"2026-05-18T03:14:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1209.2588","created_at":"2026-05-18T03:14:41Z"},{"alias_kind":"pith_short_12","alias_value":"GFDE4SVFRFOW","created_at":"2026-05-18T12:27:06Z"},{"alias_kind":"pith_short_16","alias_value":"GFDE4SVFRFOWET37","created_at":"2026-05-18T12:27:06Z"},{"alias_kind":"pith_short_8","alias_value":"GFDE4SVF","created_at":"2026-05-18T12:27:06Z"}],"graph_snapshots":[{"event_id":"sha256:ec364ebd2c1637a8e836d7ba621cd23465c9a4b2ec734f25cc5ced406057f179","target":"graph","created_at":"2026-05-18T03:14:41Z","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 scarcity of water characterising drylands forces vegetation to adopt appropriate survival strategies. Some of these generate water-vegetation feedback mechanisms that can lead to spatial self-organisation of vegetation, as it has been shown with models representing plants by a density of biomass, varying continuously in time and space. However, although plants are usually quite plastic they also display discrete qualities and stochastic behaviour. These features may give rise to demographic noise, which in certain cases can influence the qualitative dynamics of ecosystem models. In the pre","authors_text":"Alan J. McKane, John Realpe-Gomez, Mara Baudena, Max Rietkerk, Tobias Galla","cross_cats":["cond-mat.stat-mech","q-bio.PE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2012-09-12T12:27:33Z","title":"Demographic noise and resilience in a semi-arid ecosystem model"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1209.2588","kind":"arxiv","version":2},"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":"sha256:85c3c3fbebf007915460d86a1dafd00af47ef92382ce2c2a037a52de8a0d3f9a","target":"record","created_at":"2026-05-18T03:14:41Z","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":"21e9821eb0e6e5a30ca11eff403d91bd0e85a257baccc47aae0a4aecc5a13fdf","cross_cats_sorted":["cond-mat.stat-mech","q-bio.PE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2012-09-12T12:27:33Z","title_canon_sha256":"b5613968127238fe12d9adf5fb764cf7bfc4502bc67299404b7eccae2461ca2f"},"schema_version":"1.0","source":{"id":"1209.2588","kind":"arxiv","version":2}},"canonical_sha256":"31464e4aa5895d624f7f14de7c8af413b610d2c9fc92f4a05e97402359cd30c5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"31464e4aa5895d624f7f14de7c8af413b610d2c9fc92f4a05e97402359cd30c5","first_computed_at":"2026-05-18T03:14:41.067521Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:14:41.067521Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0SKd+8U11eIPFolCsZcQfXMKAKr037EksLAn2UNeFhlMSIfUmRD7tIR8/sUwqLNtoebOZvzp8XZm5gsrr0CABg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:14:41.068191Z","signed_message":"canonical_sha256_bytes"},"source_id":"1209.2588","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:85c3c3fbebf007915460d86a1dafd00af47ef92382ce2c2a037a52de8a0d3f9a","sha256:ec364ebd2c1637a8e836d7ba621cd23465c9a4b2ec734f25cc5ced406057f179"],"state_sha256":"59687191295199450d32a8834e4cf1a20ff618c33dadd27b896eaee6a1fac5a3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ozdDGu3SeCFJtFF0UaFxQu/8rPdAkIl5EGVu8vtuFbXH0Ecz8M3Eddyqp5Et7cL8Zaw3HodM84223HipbJfFCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T10:57:06.948581Z","bundle_sha256":"9a30f69039518ee21da230d79cd50b16d85213ee9e31f63ee7fae8f2e8d3798b"}}