{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:4KD3DZFC4ZIR6E2TWM2MM7UPED","short_pith_number":"pith:4KD3DZFC","canonical_record":{"source":{"id":"1701.05610","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-01-19T21:39:43Z","cross_cats_sorted":["gr-qc","physics.comp-ph","physics.flu-dyn"],"title_canon_sha256":"c2b3442207a7e4d30d9f0cc9bac5d81f72b5ab271c79103dccbecf6bbd7c4cde","abstract_canon_sha256":"9eaf7349a81ad30c16b15bfb7f35b78a59ec39e06256626b18cdc18127751652"},"schema_version":"1.0"},"canonical_sha256":"e287b1e4a2e6511f1353b334c67e8f20fe8ff4c8ae88d3bf52efbfa036488806","source":{"kind":"arxiv","id":"1701.05610","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1701.05610","created_at":"2026-05-18T00:11:07Z"},{"alias_kind":"arxiv_version","alias_value":"1701.05610v2","created_at":"2026-05-18T00:11:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1701.05610","created_at":"2026-05-18T00:11:07Z"},{"alias_kind":"pith_short_12","alias_value":"4KD3DZFC4ZIR","created_at":"2026-05-18T12:31:00Z"},{"alias_kind":"pith_short_16","alias_value":"4KD3DZFC4ZIR6E2T","created_at":"2026-05-18T12:31:00Z"},{"alias_kind":"pith_short_8","alias_value":"4KD3DZFC","created_at":"2026-05-18T12:31:00Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:4KD3DZFC4ZIR6E2TWM2MM7UPED","target":"record","payload":{"canonical_record":{"source":{"id":"1701.05610","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-01-19T21:39:43Z","cross_cats_sorted":["gr-qc","physics.comp-ph","physics.flu-dyn"],"title_canon_sha256":"c2b3442207a7e4d30d9f0cc9bac5d81f72b5ab271c79103dccbecf6bbd7c4cde","abstract_canon_sha256":"9eaf7349a81ad30c16b15bfb7f35b78a59ec39e06256626b18cdc18127751652"},"schema_version":"1.0"},"canonical_sha256":"e287b1e4a2e6511f1353b334c67e8f20fe8ff4c8ae88d3bf52efbfa036488806","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:11:07.248695Z","signature_b64":"gdGLhl7DQS5HTSd7h0P8eSsXsfiyAdFWEMpdnz/ekXnqvkLJ/LDYgi4bHVuHh3zR7bzgaRa7gXjbKBOLXokECQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e287b1e4a2e6511f1353b334c67e8f20fe8ff4c8ae88d3bf52efbfa036488806","last_reissued_at":"2026-05-18T00:11:07.247943Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:11:07.247943Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1701.05610","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":"2026-05-18T00:11:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NLDNf0Q2oVenwxSEp3dWv5sQMtfsfil78nF5AyhPomx1MbR1EU9IUrsS0qFyp/YtVsfxWmdaYkUbfuS9gs+mAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T10:08:55.428868Z"},"content_sha256":"9f09666994f06443f0a12e0dd9bf587bceb842c0dead0dba99bb752b9cc46c22","schema_version":"1.0","event_id":"sha256:9f09666994f06443f0a12e0dd9bf587bceb842c0dead0dba99bb752b9cc46c22"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:4KD3DZFC4ZIR6E2TWM2MM7UPED","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"PATCHWORK: A Multipatch Infrastructure for Multiphysics/Multiscale/Multiframe Fluid Simulations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc","physics.comp-ph","physics.flu-dyn"],"primary_cat":"astro-ph.IM","authors_text":"Hotaka Shiokawa, Julian H. Krolik, Roseanne M. Cheng, Scott C. Noble","submitted_at":"2017-01-19T21:39:43Z","abstract_excerpt":"We present a \"multipatch\" infrastructure for numerical simulation of fluid problems in which sub-regions require different gridscales, different grid geometries, different physical equations, or different reference frames. Its key element is a sophisticated client-router-server framework for efficiently linking processors supporting different regions (\"patches\") that must exchange boundary data. This infrastructure may be used with a wide variety of fluid dynamics codes; the only requirement is that their primary dependent variables be the same in all patches, e.g., fluid mass density, interna"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1701.05610","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":"2026-05-18T00:11:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Mu451En2IH9D9PLhFEISCg5nYUrfd+6HKUtKkEygamk+K6w/mEDpfrIDWBLFn9UU7/RvftYDHPBe4tctZ48+BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T10:08:55.429496Z"},"content_sha256":"457ddc18c6971dbf0c35eafa3cda73f5fccead396a1ab312ae0d05fde3d70777","schema_version":"1.0","event_id":"sha256:457ddc18c6971dbf0c35eafa3cda73f5fccead396a1ab312ae0d05fde3d70777"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4KD3DZFC4ZIR6E2TWM2MM7UPED/bundle.json","state_url":"https://pith.science/pith/4KD3DZFC4ZIR6E2TWM2MM7UPED/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4KD3DZFC4ZIR6E2TWM2MM7UPED/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":"2026-05-30T10:08:55Z","links":{"resolver":"https://pith.science/pith/4KD3DZFC4ZIR6E2TWM2MM7UPED","bundle":"https://pith.science/pith/4KD3DZFC4ZIR6E2TWM2MM7UPED/bundle.json","state":"https://pith.science/pith/4KD3DZFC4ZIR6E2TWM2MM7UPED/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4KD3DZFC4ZIR6E2TWM2MM7UPED/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:4KD3DZFC4ZIR6E2TWM2MM7UPED","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":"9eaf7349a81ad30c16b15bfb7f35b78a59ec39e06256626b18cdc18127751652","cross_cats_sorted":["gr-qc","physics.comp-ph","physics.flu-dyn"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-01-19T21:39:43Z","title_canon_sha256":"c2b3442207a7e4d30d9f0cc9bac5d81f72b5ab271c79103dccbecf6bbd7c4cde"},"schema_version":"1.0","source":{"id":"1701.05610","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1701.05610","created_at":"2026-05-18T00:11:07Z"},{"alias_kind":"arxiv_version","alias_value":"1701.05610v2","created_at":"2026-05-18T00:11:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1701.05610","created_at":"2026-05-18T00:11:07Z"},{"alias_kind":"pith_short_12","alias_value":"4KD3DZFC4ZIR","created_at":"2026-05-18T12:31:00Z"},{"alias_kind":"pith_short_16","alias_value":"4KD3DZFC4ZIR6E2T","created_at":"2026-05-18T12:31:00Z"},{"alias_kind":"pith_short_8","alias_value":"4KD3DZFC","created_at":"2026-05-18T12:31:00Z"}],"graph_snapshots":[{"event_id":"sha256:457ddc18c6971dbf0c35eafa3cda73f5fccead396a1ab312ae0d05fde3d70777","target":"graph","created_at":"2026-05-18T00:11:07Z","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 present a \"multipatch\" infrastructure for numerical simulation of fluid problems in which sub-regions require different gridscales, different grid geometries, different physical equations, or different reference frames. Its key element is a sophisticated client-router-server framework for efficiently linking processors supporting different regions (\"patches\") that must exchange boundary data. This infrastructure may be used with a wide variety of fluid dynamics codes; the only requirement is that their primary dependent variables be the same in all patches, e.g., fluid mass density, interna","authors_text":"Hotaka Shiokawa, Julian H. Krolik, Roseanne M. Cheng, Scott C. Noble","cross_cats":["gr-qc","physics.comp-ph","physics.flu-dyn"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-01-19T21:39:43Z","title":"PATCHWORK: A Multipatch Infrastructure for Multiphysics/Multiscale/Multiframe Fluid Simulations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1701.05610","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":"sha256:9f09666994f06443f0a12e0dd9bf587bceb842c0dead0dba99bb752b9cc46c22","target":"record","created_at":"2026-05-18T00:11:07Z","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":"9eaf7349a81ad30c16b15bfb7f35b78a59ec39e06256626b18cdc18127751652","cross_cats_sorted":["gr-qc","physics.comp-ph","physics.flu-dyn"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2017-01-19T21:39:43Z","title_canon_sha256":"c2b3442207a7e4d30d9f0cc9bac5d81f72b5ab271c79103dccbecf6bbd7c4cde"},"schema_version":"1.0","source":{"id":"1701.05610","kind":"arxiv","version":2}},"canonical_sha256":"e287b1e4a2e6511f1353b334c67e8f20fe8ff4c8ae88d3bf52efbfa036488806","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e287b1e4a2e6511f1353b334c67e8f20fe8ff4c8ae88d3bf52efbfa036488806","first_computed_at":"2026-05-18T00:11:07.247943Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:11:07.247943Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"gdGLhl7DQS5HTSd7h0P8eSsXsfiyAdFWEMpdnz/ekXnqvkLJ/LDYgi4bHVuHh3zR7bzgaRa7gXjbKBOLXokECQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:11:07.248695Z","signed_message":"canonical_sha256_bytes"},"source_id":"1701.05610","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9f09666994f06443f0a12e0dd9bf587bceb842c0dead0dba99bb752b9cc46c22","sha256:457ddc18c6971dbf0c35eafa3cda73f5fccead396a1ab312ae0d05fde3d70777"],"state_sha256":"6825dc4380769d228cd3e0ad020316b8decfefe2fa59fda51190ef3dc0299179"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Dq0g++LHiIR1x7rYHoKGnTdWJUwEjlLUjOveRNg/XtUaEjC/3RRB8RHYL9tsGVQAqxi+I9P+/ZnVeGTN8IglAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T10:08:55.432860Z","bundle_sha256":"b08ede63da53aff61ee0c4db924173229f5b0c3607476c165f2b9489b1f3e341"}}