{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:J3E7AKA6LIU7FB2DEGY6XZJKUX","short_pith_number":"pith:J3E7AKA6","canonical_record":{"source":{"id":"1906.11925","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2019-06-27T19:23:57Z","cross_cats_sorted":["cs.CV","cs.GR"],"title_canon_sha256":"fc5f7220201a8ecfa8c88abab33b1f4a17aae4593b4aea1f90cedb60a3d4060f","abstract_canon_sha256":"07aba21cadf4fae52ba96ef17b0b39af7230564264bb900e57067b606878728e"},"schema_version":"1.0"},"canonical_sha256":"4ec9f0281e5a29f2874321b1ebe52aa5fb894f41cc5f93c419e3a53093f8b5cd","source":{"kind":"arxiv","id":"1906.11925","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1906.11925","created_at":"2026-05-17T23:42:01Z"},{"alias_kind":"arxiv_version","alias_value":"1906.11925v1","created_at":"2026-05-17T23:42:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1906.11925","created_at":"2026-05-17T23:42:01Z"},{"alias_kind":"pith_short_12","alias_value":"J3E7AKA6LIU7","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_16","alias_value":"J3E7AKA6LIU7FB2D","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_8","alias_value":"J3E7AKA6","created_at":"2026-05-18T12:33:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:J3E7AKA6LIU7FB2DEGY6XZJKUX","target":"record","payload":{"canonical_record":{"source":{"id":"1906.11925","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2019-06-27T19:23:57Z","cross_cats_sorted":["cs.CV","cs.GR"],"title_canon_sha256":"fc5f7220201a8ecfa8c88abab33b1f4a17aae4593b4aea1f90cedb60a3d4060f","abstract_canon_sha256":"07aba21cadf4fae52ba96ef17b0b39af7230564264bb900e57067b606878728e"},"schema_version":"1.0"},"canonical_sha256":"4ec9f0281e5a29f2874321b1ebe52aa5fb894f41cc5f93c419e3a53093f8b5cd","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:42:01.603388Z","signature_b64":"3WduoLuHPDd8eVjcxzqLndjFXYTEvkF8jHghPlURi2GdQt5tU9BlazuOChuqcut5bCCIWKWVOP2KX8rHic+oCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4ec9f0281e5a29f2874321b1ebe52aa5fb894f41cc5f93c419e3a53093f8b5cd","last_reissued_at":"2026-05-17T23:42:01.602255Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:42:01.602255Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1906.11925","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":"2026-05-17T23:42:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"z+mZQy7oxEWn8y7pvVGsMZEe2MBnD/TEEbfm4wPGgrKuP+0tKPvSNZg/YS56gEmY5VNKBkCLH9YAPIFE3EkQAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-26T06:00:21.077729Z"},"content_sha256":"c65963f8825ed89e721b3a1e8b4ee5fe719fb190861fd80c61f6e739a2e3a929","schema_version":"1.0","event_id":"sha256:c65963f8825ed89e721b3a1e8b4ee5fe719fb190861fd80c61f6e739a2e3a929"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:J3E7AKA6LIU7FB2DEGY6XZJKUX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"HEMELB Acceleration and Visualization for Cerebral Aneurysms","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.CV","cs.GR"],"primary_cat":"physics.comp-ph","authors_text":"Abbes Amira, Faycal Bensaali, Georges Younes, Julien AbiNahed, Minsi Chen, Peter V. Coveney, Robin A. Richardson, Sahar Soheilian Esfahani, Sarada Dakua, Xiaojun Zhai","submitted_at":"2019-06-27T19:23:57Z","abstract_excerpt":"A weakness in the wall of a cerebral artery causing a dilation or ballooning of the blood vessel is known as a cerebral aneurysm. Optimal treatment requires fast and accurate diagnosis of the aneurysm. HemeLB is a fluid dynamics solver for complex geometries developed to provide neurosurgeons with information related to the flow of blood in and around aneurysms. On a cost efficient platform, HemeLB could be employed in hospitals to provide surgeons with the simulation results in real-time. In this work, we developed an improved version of HemeLB for GPU implementation and result visualization."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1906.11925","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":"2026-05-17T23:42:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Mz1Nzw1LqVvY1mo/0SnglY2gwmUznfEhtYU4rwxHe0n5q9TWIBBsqwjhL/lNi0TRCp/1nsafHPcRNNrv+if/Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-26T06:00:21.078075Z"},"content_sha256":"f1bb378481dc45c87e6b320128f5ed7c2380069e42bda3783f8098e25cef7f92","schema_version":"1.0","event_id":"sha256:f1bb378481dc45c87e6b320128f5ed7c2380069e42bda3783f8098e25cef7f92"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/J3E7AKA6LIU7FB2DEGY6XZJKUX/bundle.json","state_url":"https://pith.science/pith/J3E7AKA6LIU7FB2DEGY6XZJKUX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/J3E7AKA6LIU7FB2DEGY6XZJKUX/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":"2026-06-26T06:00:21Z","links":{"resolver":"https://pith.science/pith/J3E7AKA6LIU7FB2DEGY6XZJKUX","bundle":"https://pith.science/pith/J3E7AKA6LIU7FB2DEGY6XZJKUX/bundle.json","state":"https://pith.science/pith/J3E7AKA6LIU7FB2DEGY6XZJKUX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/J3E7AKA6LIU7FB2DEGY6XZJKUX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:J3E7AKA6LIU7FB2DEGY6XZJKUX","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":"07aba21cadf4fae52ba96ef17b0b39af7230564264bb900e57067b606878728e","cross_cats_sorted":["cs.CV","cs.GR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2019-06-27T19:23:57Z","title_canon_sha256":"fc5f7220201a8ecfa8c88abab33b1f4a17aae4593b4aea1f90cedb60a3d4060f"},"schema_version":"1.0","source":{"id":"1906.11925","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1906.11925","created_at":"2026-05-17T23:42:01Z"},{"alias_kind":"arxiv_version","alias_value":"1906.11925v1","created_at":"2026-05-17T23:42:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1906.11925","created_at":"2026-05-17T23:42:01Z"},{"alias_kind":"pith_short_12","alias_value":"J3E7AKA6LIU7","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_16","alias_value":"J3E7AKA6LIU7FB2D","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_8","alias_value":"J3E7AKA6","created_at":"2026-05-18T12:33:18Z"}],"graph_snapshots":[{"event_id":"sha256:f1bb378481dc45c87e6b320128f5ed7c2380069e42bda3783f8098e25cef7f92","target":"graph","created_at":"2026-05-17T23:42:01Z","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":"A weakness in the wall of a cerebral artery causing a dilation or ballooning of the blood vessel is known as a cerebral aneurysm. Optimal treatment requires fast and accurate diagnosis of the aneurysm. HemeLB is a fluid dynamics solver for complex geometries developed to provide neurosurgeons with information related to the flow of blood in and around aneurysms. On a cost efficient platform, HemeLB could be employed in hospitals to provide surgeons with the simulation results in real-time. In this work, we developed an improved version of HemeLB for GPU implementation and result visualization.","authors_text":"Abbes Amira, Faycal Bensaali, Georges Younes, Julien AbiNahed, Minsi Chen, Peter V. Coveney, Robin A. Richardson, Sahar Soheilian Esfahani, Sarada Dakua, Xiaojun Zhai","cross_cats":["cs.CV","cs.GR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2019-06-27T19:23:57Z","title":"HEMELB Acceleration and Visualization for Cerebral Aneurysms"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1906.11925","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:c65963f8825ed89e721b3a1e8b4ee5fe719fb190861fd80c61f6e739a2e3a929","target":"record","created_at":"2026-05-17T23:42:01Z","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":"07aba21cadf4fae52ba96ef17b0b39af7230564264bb900e57067b606878728e","cross_cats_sorted":["cs.CV","cs.GR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2019-06-27T19:23:57Z","title_canon_sha256":"fc5f7220201a8ecfa8c88abab33b1f4a17aae4593b4aea1f90cedb60a3d4060f"},"schema_version":"1.0","source":{"id":"1906.11925","kind":"arxiv","version":1}},"canonical_sha256":"4ec9f0281e5a29f2874321b1ebe52aa5fb894f41cc5f93c419e3a53093f8b5cd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4ec9f0281e5a29f2874321b1ebe52aa5fb894f41cc5f93c419e3a53093f8b5cd","first_computed_at":"2026-05-17T23:42:01.602255Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:42:01.602255Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"3WduoLuHPDd8eVjcxzqLndjFXYTEvkF8jHghPlURi2GdQt5tU9BlazuOChuqcut5bCCIWKWVOP2KX8rHic+oCg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:42:01.603388Z","signed_message":"canonical_sha256_bytes"},"source_id":"1906.11925","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c65963f8825ed89e721b3a1e8b4ee5fe719fb190861fd80c61f6e739a2e3a929","sha256:f1bb378481dc45c87e6b320128f5ed7c2380069e42bda3783f8098e25cef7f92"],"state_sha256":"86e47ea4b1f32f6f447fe43797bb60d8a28d83a2ddd4344aa63546d31b708e79"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Qe4ykR2uMC57+oFzZt7OXrHT5PlmTF6jYWTkOmU6IqehEUvOBocXDGy+cjWEoEYMnug33AA7N6Df6AuTh6C0Bw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-26T06:00:21.080054Z","bundle_sha256":"47a58a9953bd6a558f254b222be6476b1b1b47042788a4291c40528adb0bfb7f"}}