{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2002:6MACC3HCB5X3UNGZQ5W2DDFUUH","short_pith_number":"pith:6MACC3HC","canonical_record":{"source":{"id":"astro-ph/0209521","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2002-09-25T05:31:52Z","cross_cats_sorted":[],"title_canon_sha256":"9d84c46c72aae5971e1941a974400a8d3ec77e4f412082067be2b51a2e438364","abstract_canon_sha256":"ecc0d06353789b2a1e1cbe90f629f03a9de4e719c91d6ecdb48e4cb8c94d0c1e"},"schema_version":"1.0"},"canonical_sha256":"f300216ce20f6fba34d9876da18cb4a1f921d8ad68925c13c59494e95dea73b2","source":{"kind":"arxiv","id":"astro-ph/0209521","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0209521","created_at":"2026-05-18T01:21:56Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0209521v1","created_at":"2026-05-18T01:21:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0209521","created_at":"2026-05-18T01:21:56Z"},{"alias_kind":"pith_short_12","alias_value":"6MACC3HCB5X3","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"6MACC3HCB5X3UNGZ","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"6MACC3HC","created_at":"2026-05-18T12:25:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2002:6MACC3HCB5X3UNGZQ5W2DDFUUH","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0209521","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2002-09-25T05:31:52Z","cross_cats_sorted":[],"title_canon_sha256":"9d84c46c72aae5971e1941a974400a8d3ec77e4f412082067be2b51a2e438364","abstract_canon_sha256":"ecc0d06353789b2a1e1cbe90f629f03a9de4e719c91d6ecdb48e4cb8c94d0c1e"},"schema_version":"1.0"},"canonical_sha256":"f300216ce20f6fba34d9876da18cb4a1f921d8ad68925c13c59494e95dea73b2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:21:56.990243Z","signature_b64":"pmveAH8HBtD/iC+PaR7cdk/tQW9NzOYB+bwvMgtX1/DPoqXoU3C6JXG+jXqbqnoP2oq0LSy54I0fFirnee6dBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f300216ce20f6fba34d9876da18cb4a1f921d8ad68925c13c59494e95dea73b2","last_reissued_at":"2026-05-18T01:21:56.989539Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:21:56.989539Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0209521","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":"2026-05-18T01:21:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0wi1mBQwf5rLnQleGXrH8drO7svPY6GURwZ8K3aV9BeY16cA1E86P/JYQprsEcbUJ0kJIulGvmOsXR36DCyGAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T15:47:42.988709Z"},"content_sha256":"72d95132b0583fdd18062215a8d4065543f61988358ba1c5bcf31fdde6d5f986","schema_version":"1.0","event_id":"sha256:72d95132b0583fdd18062215a8d4065543f61988358ba1c5bcf31fdde6d5f986"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2002:6MACC3HCB5X3UNGZQ5W2DDFUUH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Cosmology on a Mesh","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Alexander Knebe, Brad K. Gibson, Chris Flynn (Swinburne University), Geraint F. Lewis (University of Sydney), Rodrigo A. Ibata (Strasbourg Observatory), Stuart P.D. Gill","submitted_at":"2002-09-25T05:31:52Z","abstract_excerpt":"An adaptive multi grid approach to simulating the formation of structure from collisionless dark matter is described. MLAPM (Multi-Level Adaptive Particle Mesh) is one of the most efficient serial codes available on the cosmological 'market' today. As part of Swinburne University's role in the development of the Square Kilometer Array, we are implementing hydrodynamics, feedback, and radiative transfer within the MLAPM adaptive mesh, in order to simulate baryonic processes relevant to the interstellar and intergalactic media at high redshift. We will outline our progress to date in applying th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0209521","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":"2026-05-18T01:21:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"M67dlrG5T4AK7ve8wkFrWWhKh7WvWUC1U11o2hk151C/LEOkGdObxjM7XaIeC/FE2sgLQ1v3M8nqw+fgDimdCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T15:47:42.989372Z"},"content_sha256":"7a30e4c11e8b3ec87aed935a2bcbc6138b43126f728d2bf15dbac7feb404d025","schema_version":"1.0","event_id":"sha256:7a30e4c11e8b3ec87aed935a2bcbc6138b43126f728d2bf15dbac7feb404d025"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6MACC3HCB5X3UNGZQ5W2DDFUUH/bundle.json","state_url":"https://pith.science/pith/6MACC3HCB5X3UNGZQ5W2DDFUUH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6MACC3HCB5X3UNGZQ5W2DDFUUH/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":"2026-05-25T15:47:42Z","links":{"resolver":"https://pith.science/pith/6MACC3HCB5X3UNGZQ5W2DDFUUH","bundle":"https://pith.science/pith/6MACC3HCB5X3UNGZQ5W2DDFUUH/bundle.json","state":"https://pith.science/pith/6MACC3HCB5X3UNGZQ5W2DDFUUH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6MACC3HCB5X3UNGZQ5W2DDFUUH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2002:6MACC3HCB5X3UNGZQ5W2DDFUUH","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":"ecc0d06353789b2a1e1cbe90f629f03a9de4e719c91d6ecdb48e4cb8c94d0c1e","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2002-09-25T05:31:52Z","title_canon_sha256":"9d84c46c72aae5971e1941a974400a8d3ec77e4f412082067be2b51a2e438364"},"schema_version":"1.0","source":{"id":"astro-ph/0209521","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0209521","created_at":"2026-05-18T01:21:56Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0209521v1","created_at":"2026-05-18T01:21:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0209521","created_at":"2026-05-18T01:21:56Z"},{"alias_kind":"pith_short_12","alias_value":"6MACC3HCB5X3","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"6MACC3HCB5X3UNGZ","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"6MACC3HC","created_at":"2026-05-18T12:25:50Z"}],"graph_snapshots":[{"event_id":"sha256:7a30e4c11e8b3ec87aed935a2bcbc6138b43126f728d2bf15dbac7feb404d025","target":"graph","created_at":"2026-05-18T01:21:56Z","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 adaptive multi grid approach to simulating the formation of structure from collisionless dark matter is described. MLAPM (Multi-Level Adaptive Particle Mesh) is one of the most efficient serial codes available on the cosmological 'market' today. As part of Swinburne University's role in the development of the Square Kilometer Array, we are implementing hydrodynamics, feedback, and radiative transfer within the MLAPM adaptive mesh, in order to simulate baryonic processes relevant to the interstellar and intergalactic media at high redshift. We will outline our progress to date in applying th","authors_text":"Alexander Knebe, Brad K. Gibson, Chris Flynn (Swinburne University), Geraint F. Lewis (University of Sydney), Rodrigo A. Ibata (Strasbourg Observatory), Stuart P.D. Gill","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2002-09-25T05:31:52Z","title":"Cosmology on a Mesh"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0209521","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":"sha256:72d95132b0583fdd18062215a8d4065543f61988358ba1c5bcf31fdde6d5f986","target":"record","created_at":"2026-05-18T01:21:56Z","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":"ecc0d06353789b2a1e1cbe90f629f03a9de4e719c91d6ecdb48e4cb8c94d0c1e","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2002-09-25T05:31:52Z","title_canon_sha256":"9d84c46c72aae5971e1941a974400a8d3ec77e4f412082067be2b51a2e438364"},"schema_version":"1.0","source":{"id":"astro-ph/0209521","kind":"arxiv","version":1}},"canonical_sha256":"f300216ce20f6fba34d9876da18cb4a1f921d8ad68925c13c59494e95dea73b2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f300216ce20f6fba34d9876da18cb4a1f921d8ad68925c13c59494e95dea73b2","first_computed_at":"2026-05-18T01:21:56.989539Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:21:56.989539Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"pmveAH8HBtD/iC+PaR7cdk/tQW9NzOYB+bwvMgtX1/DPoqXoU3C6JXG+jXqbqnoP2oq0LSy54I0fFirnee6dBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:21:56.990243Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0209521","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:72d95132b0583fdd18062215a8d4065543f61988358ba1c5bcf31fdde6d5f986","sha256:7a30e4c11e8b3ec87aed935a2bcbc6138b43126f728d2bf15dbac7feb404d025"],"state_sha256":"f40143ceb1e36ed1ab3ca37f1b479dc49024de9275b959b533c1cd3973e45dbd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iahiii0/UOQxEac1bpoGm0k+wFJXi/xPaJP1ONAH+lROL3scdScvZIqN5fACAX3YTyAbdnhiDcbtMbT8GR5TDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T15:47:42.993014Z","bundle_sha256":"fb861a29fade3828302edf0e2ae9d39d2f41fe11d547dafe1131026427fce77f"}}