{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:LUSEZM3BRJKZ7QCR6DIXJSCOHV","short_pith_number":"pith:LUSEZM3B","canonical_record":{"source":{"id":"1512.03172","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2015-12-10T08:45:22Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"fd14aa6cc3de3781c060cd604b125800736531eec229e9d915f179b723394f18","abstract_canon_sha256":"f1ae2f7d8a85971eca7234a71fadf85e2138c48bef626e171d8ca100aee742a4"},"schema_version":"1.0"},"canonical_sha256":"5d244cb3618a559fc051f0d174c84e3d6467e85b6f1c8b1457d8a1713467d9e6","source":{"kind":"arxiv","id":"1512.03172","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1512.03172","created_at":"2026-05-18T01:08:26Z"},{"alias_kind":"arxiv_version","alias_value":"1512.03172v2","created_at":"2026-05-18T01:08:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1512.03172","created_at":"2026-05-18T01:08:26Z"},{"alias_kind":"pith_short_12","alias_value":"LUSEZM3BRJKZ","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_16","alias_value":"LUSEZM3BRJKZ7QCR","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_8","alias_value":"LUSEZM3B","created_at":"2026-05-18T12:29:29Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:LUSEZM3BRJKZ7QCR6DIXJSCOHV","target":"record","payload":{"canonical_record":{"source":{"id":"1512.03172","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2015-12-10T08:45:22Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"fd14aa6cc3de3781c060cd604b125800736531eec229e9d915f179b723394f18","abstract_canon_sha256":"f1ae2f7d8a85971eca7234a71fadf85e2138c48bef626e171d8ca100aee742a4"},"schema_version":"1.0"},"canonical_sha256":"5d244cb3618a559fc051f0d174c84e3d6467e85b6f1c8b1457d8a1713467d9e6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:08:26.135884Z","signature_b64":"Gd0E2PfBCaBZHgAu/aYj0FiSrWNcQe07F1YR1Kopes16+f9Z3WjlBud+heIlrKeS2p6oJ03zZ7N18nFvz6CnBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5d244cb3618a559fc051f0d174c84e3d6467e85b6f1c8b1457d8a1713467d9e6","last_reissued_at":"2026-05-18T01:08:26.135154Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:08:26.135154Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1512.03172","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":"2026-05-18T01:08:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2sCzq4R67gYz0JQGbSeegflIYi20qelpvs/S29tkW0bbKSW6ZX4FICAmKWkzcdxUUt8BpGeuMpAdRwOr06OjDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T14:17:45.391585Z"},"content_sha256":"621a1a7d827bb6d7e5a10dfe8bb0373a5f7f2aa0fce7a8600bd5c7d2a23beb73","schema_version":"1.0","event_id":"sha256:621a1a7d827bb6d7e5a10dfe8bb0373a5f7f2aa0fce7a8600bd5c7d2a23beb73"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:LUSEZM3BRJKZ7QCR6DIXJSCOHV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Static Multiresolution Grids with Inline Hierarchy Information for Cosmic Ray Propagation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.IM","authors_text":"Gero M\\\"uller","submitted_at":"2015-12-10T08:45:22Z","abstract_excerpt":"For numerical simulations of cosmic-ray propagation fast access to static magnetic field data is required. We present a data structure for multiresolution vector grids which is optimized for fast access, low overhead and shared memory use. The hierarchy information is encoded into the grid itself, reducing the memory overhead. Benchmarks show that in certain scenarios the differences in deflections introduced by sampling the magnetic field model can be significantly reduced when using the multiresolution approach."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1512.03172","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":"2026-05-18T01:08:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lRmzvP/INIQCNwWDUO63fSlzifDW3sIIBs6XEw3ZagsnUtbh+qJLH+dk/GxcI2Zbqv70Tt+pXpPQZC2bFTIDDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T14:17:45.392390Z"},"content_sha256":"85d6225ef64a2412bb9b5c67e601c281dfff4d63ff063cf73b49d9107b62da6d","schema_version":"1.0","event_id":"sha256:85d6225ef64a2412bb9b5c67e601c281dfff4d63ff063cf73b49d9107b62da6d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LUSEZM3BRJKZ7QCR6DIXJSCOHV/bundle.json","state_url":"https://pith.science/pith/LUSEZM3BRJKZ7QCR6DIXJSCOHV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LUSEZM3BRJKZ7QCR6DIXJSCOHV/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":"2026-05-30T14:17:45Z","links":{"resolver":"https://pith.science/pith/LUSEZM3BRJKZ7QCR6DIXJSCOHV","bundle":"https://pith.science/pith/LUSEZM3BRJKZ7QCR6DIXJSCOHV/bundle.json","state":"https://pith.science/pith/LUSEZM3BRJKZ7QCR6DIXJSCOHV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LUSEZM3BRJKZ7QCR6DIXJSCOHV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:LUSEZM3BRJKZ7QCR6DIXJSCOHV","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":"f1ae2f7d8a85971eca7234a71fadf85e2138c48bef626e171d8ca100aee742a4","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2015-12-10T08:45:22Z","title_canon_sha256":"fd14aa6cc3de3781c060cd604b125800736531eec229e9d915f179b723394f18"},"schema_version":"1.0","source":{"id":"1512.03172","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1512.03172","created_at":"2026-05-18T01:08:26Z"},{"alias_kind":"arxiv_version","alias_value":"1512.03172v2","created_at":"2026-05-18T01:08:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1512.03172","created_at":"2026-05-18T01:08:26Z"},{"alias_kind":"pith_short_12","alias_value":"LUSEZM3BRJKZ","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_16","alias_value":"LUSEZM3BRJKZ7QCR","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_8","alias_value":"LUSEZM3B","created_at":"2026-05-18T12:29:29Z"}],"graph_snapshots":[{"event_id":"sha256:85d6225ef64a2412bb9b5c67e601c281dfff4d63ff063cf73b49d9107b62da6d","target":"graph","created_at":"2026-05-18T01:08:26Z","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":"For numerical simulations of cosmic-ray propagation fast access to static magnetic field data is required. We present a data structure for multiresolution vector grids which is optimized for fast access, low overhead and shared memory use. The hierarchy information is encoded into the grid itself, reducing the memory overhead. Benchmarks show that in certain scenarios the differences in deflections introduced by sampling the magnetic field model can be significantly reduced when using the multiresolution approach.","authors_text":"Gero M\\\"uller","cross_cats":["astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2015-12-10T08:45:22Z","title":"Static Multiresolution Grids with Inline Hierarchy Information for Cosmic Ray Propagation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1512.03172","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":"sha256:621a1a7d827bb6d7e5a10dfe8bb0373a5f7f2aa0fce7a8600bd5c7d2a23beb73","target":"record","created_at":"2026-05-18T01:08:26Z","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":"f1ae2f7d8a85971eca7234a71fadf85e2138c48bef626e171d8ca100aee742a4","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2015-12-10T08:45:22Z","title_canon_sha256":"fd14aa6cc3de3781c060cd604b125800736531eec229e9d915f179b723394f18"},"schema_version":"1.0","source":{"id":"1512.03172","kind":"arxiv","version":2}},"canonical_sha256":"5d244cb3618a559fc051f0d174c84e3d6467e85b6f1c8b1457d8a1713467d9e6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5d244cb3618a559fc051f0d174c84e3d6467e85b6f1c8b1457d8a1713467d9e6","first_computed_at":"2026-05-18T01:08:26.135154Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:08:26.135154Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Gd0E2PfBCaBZHgAu/aYj0FiSrWNcQe07F1YR1Kopes16+f9Z3WjlBud+heIlrKeS2p6oJ03zZ7N18nFvz6CnBA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:08:26.135884Z","signed_message":"canonical_sha256_bytes"},"source_id":"1512.03172","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:621a1a7d827bb6d7e5a10dfe8bb0373a5f7f2aa0fce7a8600bd5c7d2a23beb73","sha256:85d6225ef64a2412bb9b5c67e601c281dfff4d63ff063cf73b49d9107b62da6d"],"state_sha256":"c48875f8d764e3509e290e6dfd39578d326d30ea008f068ba51150db90c5ba32"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CBatj4T7vSFnRUSHYk1LvJOoPrONj68NobL2INiC1Xsy6hMX67pxU8IbD0JiEA28APvK0AolegrS9AccfIHrCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T14:17:45.396090Z","bundle_sha256":"7afa83840775a9b8e41855d187ac9da36330dfc0e631e0e664a1154309495bbf"}}