{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:2CO35IOEFYAPSVSVQA4NKJ3AKQ","short_pith_number":"pith:2CO35IOE","canonical_record":{"source":{"id":"1409.7006","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.PE","submitted_at":"2014-09-24T16:09:14Z","cross_cats_sorted":[],"title_canon_sha256":"7f5c54450d08d4800c8b9a5aea0e66b7adb3ed800aa223bea688f98dc6c0134e","abstract_canon_sha256":"fe87a04345bf2fe83209daf1f2be06a24ffc661c6bba701ea69b5a2217d0765d"},"schema_version":"1.0"},"canonical_sha256":"d09dbea1c42e00f956558038d52760540383e5eeb938dd115bf94a7f313898b9","source":{"kind":"arxiv","id":"1409.7006","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1409.7006","created_at":"2026-05-18T02:42:00Z"},{"alias_kind":"arxiv_version","alias_value":"1409.7006v1","created_at":"2026-05-18T02:42:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1409.7006","created_at":"2026-05-18T02:42:00Z"},{"alias_kind":"pith_short_12","alias_value":"2CO35IOEFYAP","created_at":"2026-05-18T12:28:09Z"},{"alias_kind":"pith_short_16","alias_value":"2CO35IOEFYAPSVSV","created_at":"2026-05-18T12:28:09Z"},{"alias_kind":"pith_short_8","alias_value":"2CO35IOE","created_at":"2026-05-18T12:28:09Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:2CO35IOEFYAPSVSVQA4NKJ3AKQ","target":"record","payload":{"canonical_record":{"source":{"id":"1409.7006","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.PE","submitted_at":"2014-09-24T16:09:14Z","cross_cats_sorted":[],"title_canon_sha256":"7f5c54450d08d4800c8b9a5aea0e66b7adb3ed800aa223bea688f98dc6c0134e","abstract_canon_sha256":"fe87a04345bf2fe83209daf1f2be06a24ffc661c6bba701ea69b5a2217d0765d"},"schema_version":"1.0"},"canonical_sha256":"d09dbea1c42e00f956558038d52760540383e5eeb938dd115bf94a7f313898b9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:42:00.038064Z","signature_b64":"fPgVt2Te71eltSIZFlcPYYIpSF7Yyux95wQykiDHWyJLfq+FAOBEHZxHllnATmhttZL5lzIvJYMExZyMfAbLBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d09dbea1c42e00f956558038d52760540383e5eeb938dd115bf94a7f313898b9","last_reissued_at":"2026-05-18T02:42:00.037705Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:42:00.037705Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1409.7006","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":"2026-05-18T02:42:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jnrUJiDWi15WwhdeMDy9Cepck0Q4pG6HNDZeQ5zyNbYwTFqBDZuZ3mgB1hDQfqpI+ybkxVboj7lkyDbKUkroAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T15:31:35.222880Z"},"content_sha256":"b6a1e7db5f5f0b224973ebb9f0f14e222b8355ab2765c2c193bf122ef549641c","schema_version":"1.0","event_id":"sha256:b6a1e7db5f5f0b224973ebb9f0f14e222b8355ab2765c2c193bf122ef549641c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:2CO35IOEFYAPSVSVQA4NKJ3AKQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Collapse of an ecological network in Ancient Egypt","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"q-bio.PE","authors_text":"Justin D. Yeakel, Lars Rudolf, Mathias M. Pires, Nathaniel J. Dominy, Paul L. Koch, Paulo R. Guimar\\~aes Jr., Thilo gross","submitted_at":"2014-09-24T16:09:14Z","abstract_excerpt":"The dynamics of ecosystem collapse are fundamental to determining how and why biological communities change through time, as well as the potential effects of extinctions on ecosystems. Here we integrate depictions of mammals from Egyptian antiquity with direct lines of paleontological and archeological evidence to infer local extinctions and community dynamics over a 6000-year span. The unprecedented temporal resolution of this data set enables examination of how the tandem effects of human population growth and climate change can disrupt mammalian communities. We show that the extinctions of "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1409.7006","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":"2026-05-18T02:42:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gvvllm4q14PzK0/5ybi/Ln0Zbc8ldZtzoNsCNtWWUxnIxTT7O7Bts0YZ7S+UVLcEdlwBCICxYM9EyfVggEsZDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T15:31:35.223233Z"},"content_sha256":"0ecfce1cd6c4734b562373ca64c3fd9490f2ad6475a9a1d1c05b9b831b0f39e2","schema_version":"1.0","event_id":"sha256:0ecfce1cd6c4734b562373ca64c3fd9490f2ad6475a9a1d1c05b9b831b0f39e2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2CO35IOEFYAPSVSVQA4NKJ3AKQ/bundle.json","state_url":"https://pith.science/pith/2CO35IOEFYAPSVSVQA4NKJ3AKQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2CO35IOEFYAPSVSVQA4NKJ3AKQ/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":"2026-05-27T15:31:35Z","links":{"resolver":"https://pith.science/pith/2CO35IOEFYAPSVSVQA4NKJ3AKQ","bundle":"https://pith.science/pith/2CO35IOEFYAPSVSVQA4NKJ3AKQ/bundle.json","state":"https://pith.science/pith/2CO35IOEFYAPSVSVQA4NKJ3AKQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2CO35IOEFYAPSVSVQA4NKJ3AKQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:2CO35IOEFYAPSVSVQA4NKJ3AKQ","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":"fe87a04345bf2fe83209daf1f2be06a24ffc661c6bba701ea69b5a2217d0765d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.PE","submitted_at":"2014-09-24T16:09:14Z","title_canon_sha256":"7f5c54450d08d4800c8b9a5aea0e66b7adb3ed800aa223bea688f98dc6c0134e"},"schema_version":"1.0","source":{"id":"1409.7006","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1409.7006","created_at":"2026-05-18T02:42:00Z"},{"alias_kind":"arxiv_version","alias_value":"1409.7006v1","created_at":"2026-05-18T02:42:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1409.7006","created_at":"2026-05-18T02:42:00Z"},{"alias_kind":"pith_short_12","alias_value":"2CO35IOEFYAP","created_at":"2026-05-18T12:28:09Z"},{"alias_kind":"pith_short_16","alias_value":"2CO35IOEFYAPSVSV","created_at":"2026-05-18T12:28:09Z"},{"alias_kind":"pith_short_8","alias_value":"2CO35IOE","created_at":"2026-05-18T12:28:09Z"}],"graph_snapshots":[{"event_id":"sha256:0ecfce1cd6c4734b562373ca64c3fd9490f2ad6475a9a1d1c05b9b831b0f39e2","target":"graph","created_at":"2026-05-18T02:42:00Z","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 dynamics of ecosystem collapse are fundamental to determining how and why biological communities change through time, as well as the potential effects of extinctions on ecosystems. Here we integrate depictions of mammals from Egyptian antiquity with direct lines of paleontological and archeological evidence to infer local extinctions and community dynamics over a 6000-year span. The unprecedented temporal resolution of this data set enables examination of how the tandem effects of human population growth and climate change can disrupt mammalian communities. We show that the extinctions of ","authors_text":"Justin D. Yeakel, Lars Rudolf, Mathias M. Pires, Nathaniel J. Dominy, Paul L. Koch, Paulo R. Guimar\\~aes Jr., Thilo gross","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.PE","submitted_at":"2014-09-24T16:09:14Z","title":"Collapse of an ecological network in Ancient Egypt"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1409.7006","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:b6a1e7db5f5f0b224973ebb9f0f14e222b8355ab2765c2c193bf122ef549641c","target":"record","created_at":"2026-05-18T02:42:00Z","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":"fe87a04345bf2fe83209daf1f2be06a24ffc661c6bba701ea69b5a2217d0765d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.PE","submitted_at":"2014-09-24T16:09:14Z","title_canon_sha256":"7f5c54450d08d4800c8b9a5aea0e66b7adb3ed800aa223bea688f98dc6c0134e"},"schema_version":"1.0","source":{"id":"1409.7006","kind":"arxiv","version":1}},"canonical_sha256":"d09dbea1c42e00f956558038d52760540383e5eeb938dd115bf94a7f313898b9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d09dbea1c42e00f956558038d52760540383e5eeb938dd115bf94a7f313898b9","first_computed_at":"2026-05-18T02:42:00.037705Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:42:00.037705Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"fPgVt2Te71eltSIZFlcPYYIpSF7Yyux95wQykiDHWyJLfq+FAOBEHZxHllnATmhttZL5lzIvJYMExZyMfAbLBg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:42:00.038064Z","signed_message":"canonical_sha256_bytes"},"source_id":"1409.7006","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b6a1e7db5f5f0b224973ebb9f0f14e222b8355ab2765c2c193bf122ef549641c","sha256:0ecfce1cd6c4734b562373ca64c3fd9490f2ad6475a9a1d1c05b9b831b0f39e2"],"state_sha256":"e857090e6ca610b1f6301565944f12158f08bf0ec3abee7a489aef160effdde7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VxTof5geK7Z02ajI5z85Czm8LozVhF7SS38nwrnjqsvJe+3M9o7xqJh6j+3NzqzgsKJc5IiWC+dPovsxiLO1DQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T15:31:35.225640Z","bundle_sha256":"002cd82c4eeb6e1f79a8c44d8ad8376919382e905914f37808ed5af3fca954f7"}}