{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2003:GYYBQAAMNFEVHWAXCRW35D2XMG","short_pith_number":"pith:GYYBQAAM","canonical_record":{"source":{"id":"cond-mat/0305262","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"cond-mat.stat-mech","submitted_at":"2003-05-12T15:14:27Z","cross_cats_sorted":["q-bio.PE"],"title_canon_sha256":"6573e8c9bc016d47841b50995b3db1783d6f096d4daadd7d1f55fdff37e7ca35","abstract_canon_sha256":"c937572d3b9e7be83868888c7d28cba04f9fdbd0a6b12906429b4df6a24d4536"},"schema_version":"1.0"},"canonical_sha256":"363018000c694953d817146dbe8f576181cde51d7d533c0873a4e4cc6756637f","source":{"kind":"arxiv","id":"cond-mat/0305262","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0305262","created_at":"2026-05-18T01:06:57Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0305262v1","created_at":"2026-05-18T01:06:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0305262","created_at":"2026-05-18T01:06:57Z"},{"alias_kind":"pith_short_12","alias_value":"GYYBQAAMNFEV","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_16","alias_value":"GYYBQAAMNFEVHWAX","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_8","alias_value":"GYYBQAAM","created_at":"2026-05-18T12:25:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2003:GYYBQAAMNFEVHWAXCRW35D2XMG","target":"record","payload":{"canonical_record":{"source":{"id":"cond-mat/0305262","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"cond-mat.stat-mech","submitted_at":"2003-05-12T15:14:27Z","cross_cats_sorted":["q-bio.PE"],"title_canon_sha256":"6573e8c9bc016d47841b50995b3db1783d6f096d4daadd7d1f55fdff37e7ca35","abstract_canon_sha256":"c937572d3b9e7be83868888c7d28cba04f9fdbd0a6b12906429b4df6a24d4536"},"schema_version":"1.0"},"canonical_sha256":"363018000c694953d817146dbe8f576181cde51d7d533c0873a4e4cc6756637f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:06:57.432268Z","signature_b64":"7psv98JLy6oZMi47KR7UfH0c7k4yjTg+4DDL6A436RIYM5L7A8b5hwGOyv6AfWya8vGIXInJJzoMLudVfxl5CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"363018000c694953d817146dbe8f576181cde51d7d533c0873a4e4cc6756637f","last_reissued_at":"2026-05-18T01:06:57.431583Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:06:57.431583Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"cond-mat/0305262","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":"2026-05-18T01:06:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TN0VMv6TrKP+MxAztjRHTL+zgifgdOV1tWTvMjmKhHQ/hPxypIEy+bclUPVglxwt2fxnUoAX3r+Zl/154kcOAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T06:35:17.866808Z"},"content_sha256":"4e52c0a4610dd50f831b888cf23c49fda6aab3d018dd8a4af1e8aa76d0a7cb0f","schema_version":"1.0","event_id":"sha256:4e52c0a4610dd50f831b888cf23c49fda6aab3d018dd8a4af1e8aa76d0a7cb0f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2003:GYYBQAAMNFEVHWAXCRW35D2XMG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A predator-prey model based on fully parallel cellular automata","license":"","headline":"","cross_cats":["q-bio.PE"],"primary_cat":"cond-mat.stat-mech","authors_text":"Changliang Yu, Hongbo Ruan, Mingfeng He","submitted_at":"2003-05-12T15:14:27Z","abstract_excerpt":"We presented a predator-prey lattice model containing moveable wolves and sheep, which are characterized by Penna double bit strings. Sexual reproduction and child-care strategies are considered. To implement this model in an efficient way, we build a fully parallel Cellular Automata based on a new definition of the neighborhood. We show the roles played by the initial densities of the populations, the mutation rate and the linear size of the lattice in the evolution of this model."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0305262","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":"2026-05-18T01:06:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"A4Ct6DAjl4Mga7bNu9y9fpqiNlH+XVJNpmnyGba3mnhyRqFnYqbDphltOquctNhDOiBsFQWPq1edE7RFgkOZBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T06:35:17.867150Z"},"content_sha256":"66e64dad1763157127e7124bcb12986087bc5fd91ea956b1588a8d00f622a70f","schema_version":"1.0","event_id":"sha256:66e64dad1763157127e7124bcb12986087bc5fd91ea956b1588a8d00f622a70f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GYYBQAAMNFEVHWAXCRW35D2XMG/bundle.json","state_url":"https://pith.science/pith/GYYBQAAMNFEVHWAXCRW35D2XMG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GYYBQAAMNFEVHWAXCRW35D2XMG/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":"2026-06-03T06:35:17Z","links":{"resolver":"https://pith.science/pith/GYYBQAAMNFEVHWAXCRW35D2XMG","bundle":"https://pith.science/pith/GYYBQAAMNFEVHWAXCRW35D2XMG/bundle.json","state":"https://pith.science/pith/GYYBQAAMNFEVHWAXCRW35D2XMG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GYYBQAAMNFEVHWAXCRW35D2XMG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2003:GYYBQAAMNFEVHWAXCRW35D2XMG","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":"c937572d3b9e7be83868888c7d28cba04f9fdbd0a6b12906429b4df6a24d4536","cross_cats_sorted":["q-bio.PE"],"license":"","primary_cat":"cond-mat.stat-mech","submitted_at":"2003-05-12T15:14:27Z","title_canon_sha256":"6573e8c9bc016d47841b50995b3db1783d6f096d4daadd7d1f55fdff37e7ca35"},"schema_version":"1.0","source":{"id":"cond-mat/0305262","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0305262","created_at":"2026-05-18T01:06:57Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0305262v1","created_at":"2026-05-18T01:06:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0305262","created_at":"2026-05-18T01:06:57Z"},{"alias_kind":"pith_short_12","alias_value":"GYYBQAAMNFEV","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_16","alias_value":"GYYBQAAMNFEVHWAX","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_8","alias_value":"GYYBQAAM","created_at":"2026-05-18T12:25:52Z"}],"graph_snapshots":[{"event_id":"sha256:66e64dad1763157127e7124bcb12986087bc5fd91ea956b1588a8d00f622a70f","target":"graph","created_at":"2026-05-18T01:06:57Z","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 presented a predator-prey lattice model containing moveable wolves and sheep, which are characterized by Penna double bit strings. Sexual reproduction and child-care strategies are considered. To implement this model in an efficient way, we build a fully parallel Cellular Automata based on a new definition of the neighborhood. We show the roles played by the initial densities of the populations, the mutation rate and the linear size of the lattice in the evolution of this model.","authors_text":"Changliang Yu, Hongbo Ruan, Mingfeng He","cross_cats":["q-bio.PE"],"headline":"","license":"","primary_cat":"cond-mat.stat-mech","submitted_at":"2003-05-12T15:14:27Z","title":"A predator-prey model based on fully parallel cellular automata"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0305262","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":"sha256:4e52c0a4610dd50f831b888cf23c49fda6aab3d018dd8a4af1e8aa76d0a7cb0f","target":"record","created_at":"2026-05-18T01:06:57Z","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":"c937572d3b9e7be83868888c7d28cba04f9fdbd0a6b12906429b4df6a24d4536","cross_cats_sorted":["q-bio.PE"],"license":"","primary_cat":"cond-mat.stat-mech","submitted_at":"2003-05-12T15:14:27Z","title_canon_sha256":"6573e8c9bc016d47841b50995b3db1783d6f096d4daadd7d1f55fdff37e7ca35"},"schema_version":"1.0","source":{"id":"cond-mat/0305262","kind":"arxiv","version":1}},"canonical_sha256":"363018000c694953d817146dbe8f576181cde51d7d533c0873a4e4cc6756637f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"363018000c694953d817146dbe8f576181cde51d7d533c0873a4e4cc6756637f","first_computed_at":"2026-05-18T01:06:57.431583Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:06:57.431583Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"7psv98JLy6oZMi47KR7UfH0c7k4yjTg+4DDL6A436RIYM5L7A8b5hwGOyv6AfWya8vGIXInJJzoMLudVfxl5CA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:06:57.432268Z","signed_message":"canonical_sha256_bytes"},"source_id":"cond-mat/0305262","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4e52c0a4610dd50f831b888cf23c49fda6aab3d018dd8a4af1e8aa76d0a7cb0f","sha256:66e64dad1763157127e7124bcb12986087bc5fd91ea956b1588a8d00f622a70f"],"state_sha256":"7a881dc4adb31cebbb21b35093edeaaaa1d76a541ebb656f481de69e38f79015"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"u/Z/BDlLHXdIJtUKeSMxthEDJepaGulFC3W5S9KiKVyGT4Y6mXmXC0a/aGURgUX531eDZub7imQBHb8R1NUmAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T06:35:17.869138Z","bundle_sha256":"950b72664c6a3ddabf5e1cb1c2edaa9f4cbd5de6df1bdbf3f5ea3a680272300c"}}