{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:2PZX5ECCBMH3P2DQTKLL7XLUGI","short_pith_number":"pith:2PZX5ECC","canonical_record":{"source":{"id":"2109.05339","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.comp-ph","submitted_at":"2021-09-11T18:49:54Z","cross_cats_sorted":["cs.CE","cs.CL","physics.bio-ph"],"title_canon_sha256":"23abfc2487b7004a8b88d8aad68350788c6c021fc063154b3c37c8ac178f59e0","abstract_canon_sha256":"4ef1fa0714352b990b17a36456aa42e1617de859a91a7331d99ee721602f9dbd"},"schema_version":"1.0"},"canonical_sha256":"d3f37e90420b0fb7e8709a96bfdd743212619b9e64c3933853b92201ee3205ba","source":{"kind":"arxiv","id":"2109.05339","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2109.05339","created_at":"2026-07-05T03:13:37Z"},{"alias_kind":"arxiv_version","alias_value":"2109.05339v1","created_at":"2026-07-05T03:13:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2109.05339","created_at":"2026-07-05T03:13:37Z"},{"alias_kind":"pith_short_12","alias_value":"2PZX5ECCBMH3","created_at":"2026-07-05T03:13:37Z"},{"alias_kind":"pith_short_16","alias_value":"2PZX5ECCBMH3P2DQ","created_at":"2026-07-05T03:13:37Z"},{"alias_kind":"pith_short_8","alias_value":"2PZX5ECC","created_at":"2026-07-05T03:13:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:2PZX5ECCBMH3P2DQTKLL7XLUGI","target":"record","payload":{"canonical_record":{"source":{"id":"2109.05339","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.comp-ph","submitted_at":"2021-09-11T18:49:54Z","cross_cats_sorted":["cs.CE","cs.CL","physics.bio-ph"],"title_canon_sha256":"23abfc2487b7004a8b88d8aad68350788c6c021fc063154b3c37c8ac178f59e0","abstract_canon_sha256":"4ef1fa0714352b990b17a36456aa42e1617de859a91a7331d99ee721602f9dbd"},"schema_version":"1.0"},"canonical_sha256":"d3f37e90420b0fb7e8709a96bfdd743212619b9e64c3933853b92201ee3205ba","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:13:37.862944Z","signature_b64":"KcZqa7jFmNvJW2BGFDehOfSfyYOwMH/LNVFvKbmw5Ecs25AsCCxWSt7VZNpSHf/WkwMlAwyA7+TjElM7RsWrAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d3f37e90420b0fb7e8709a96bfdd743212619b9e64c3933853b92201ee3205ba","last_reissued_at":"2026-07-05T03:13:37.862470Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:13:37.862470Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2109.05339","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":"2026-07-05T03:13:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iCnyYaii4bsN4sjkvc/BwscT5u7HtgMBI3zPULURsASI80kaDCdGqAmgef0qGrCShVtEzbWa2LA59i5mRI/ECA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-13T03:59:49.390742Z"},"content_sha256":"0b45dd5375b0e204b42ec583799cee496cd30dd01ef6a272f8c856f9033b1264","schema_version":"1.0","event_id":"sha256:0b45dd5375b0e204b42ec583799cee496cd30dd01ef6a272f8c856f9033b1264"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:2PZX5ECCBMH3P2DQTKLL7XLUGI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Scaling and Acceleration of Three-dimensional Structure Determination for Single-Particle Imaging Experiments with SpiniFEL","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cs.CE","cs.CL","physics.bio-ph"],"primary_cat":"physics.comp-ph","authors_text":"Chun Hong Yoon, Elliott Slaughter, Hsing-Yin Chang, Jeffrey Donatelli, Seema Mirchandaney","submitted_at":"2021-09-11T18:49:54Z","abstract_excerpt":"The Linac Coherent Light Source (LCLS) is an X- ray free electron laser (XFEL) facility enabling the study of the structure and dynamics of single macromolecules. A major upgrade will bring the repetition rate of the X-ray source from 120 to 1 million pulses per second. Exascale high performance computing (HPC) capabilities will be required to process the corresponding data rates. We present SpiniFEL, an application used for structure determination of proteins from single-particle imaging (SPI) experiments. An emerging technique for imaging individual proteins and other large molecular complex"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2109.05339","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2109.05339/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T03:13:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DKOz0sDjxAG+Wyig+J1fV2jodIbcRC9hIW+t8+C+drBBc5Ul7jQwdFVHSYZG1I9zZoMvC1gN+7cwb9Dl1BoUAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-13T03:59:49.391132Z"},"content_sha256":"95484c346ee8e149b8b73412568b7036b551489e744e2f21749065502a40c628","schema_version":"1.0","event_id":"sha256:95484c346ee8e149b8b73412568b7036b551489e744e2f21749065502a40c628"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2PZX5ECCBMH3P2DQTKLL7XLUGI/bundle.json","state_url":"https://pith.science/pith/2PZX5ECCBMH3P2DQTKLL7XLUGI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2PZX5ECCBMH3P2DQTKLL7XLUGI/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":"2026-07-13T03:59:49Z","links":{"resolver":"https://pith.science/pith/2PZX5ECCBMH3P2DQTKLL7XLUGI","bundle":"https://pith.science/pith/2PZX5ECCBMH3P2DQTKLL7XLUGI/bundle.json","state":"https://pith.science/pith/2PZX5ECCBMH3P2DQTKLL7XLUGI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2PZX5ECCBMH3P2DQTKLL7XLUGI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:2PZX5ECCBMH3P2DQTKLL7XLUGI","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":"4ef1fa0714352b990b17a36456aa42e1617de859a91a7331d99ee721602f9dbd","cross_cats_sorted":["cs.CE","cs.CL","physics.bio-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.comp-ph","submitted_at":"2021-09-11T18:49:54Z","title_canon_sha256":"23abfc2487b7004a8b88d8aad68350788c6c021fc063154b3c37c8ac178f59e0"},"schema_version":"1.0","source":{"id":"2109.05339","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2109.05339","created_at":"2026-07-05T03:13:37Z"},{"alias_kind":"arxiv_version","alias_value":"2109.05339v1","created_at":"2026-07-05T03:13:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2109.05339","created_at":"2026-07-05T03:13:37Z"},{"alias_kind":"pith_short_12","alias_value":"2PZX5ECCBMH3","created_at":"2026-07-05T03:13:37Z"},{"alias_kind":"pith_short_16","alias_value":"2PZX5ECCBMH3P2DQ","created_at":"2026-07-05T03:13:37Z"},{"alias_kind":"pith_short_8","alias_value":"2PZX5ECC","created_at":"2026-07-05T03:13:37Z"}],"graph_snapshots":[{"event_id":"sha256:95484c346ee8e149b8b73412568b7036b551489e744e2f21749065502a40c628","target":"graph","created_at":"2026-07-05T03:13:37Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2109.05339/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The Linac Coherent Light Source (LCLS) is an X- ray free electron laser (XFEL) facility enabling the study of the structure and dynamics of single macromolecules. A major upgrade will bring the repetition rate of the X-ray source from 120 to 1 million pulses per second. Exascale high performance computing (HPC) capabilities will be required to process the corresponding data rates. We present SpiniFEL, an application used for structure determination of proteins from single-particle imaging (SPI) experiments. An emerging technique for imaging individual proteins and other large molecular complex","authors_text":"Chun Hong Yoon, Elliott Slaughter, Hsing-Yin Chang, Jeffrey Donatelli, Seema Mirchandaney","cross_cats":["cs.CE","cs.CL","physics.bio-ph"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.comp-ph","submitted_at":"2021-09-11T18:49:54Z","title":"Scaling and Acceleration of Three-dimensional Structure Determination for Single-Particle Imaging Experiments with SpiniFEL"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2109.05339","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":"sha256:0b45dd5375b0e204b42ec583799cee496cd30dd01ef6a272f8c856f9033b1264","target":"record","created_at":"2026-07-05T03:13:37Z","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":"4ef1fa0714352b990b17a36456aa42e1617de859a91a7331d99ee721602f9dbd","cross_cats_sorted":["cs.CE","cs.CL","physics.bio-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.comp-ph","submitted_at":"2021-09-11T18:49:54Z","title_canon_sha256":"23abfc2487b7004a8b88d8aad68350788c6c021fc063154b3c37c8ac178f59e0"},"schema_version":"1.0","source":{"id":"2109.05339","kind":"arxiv","version":1}},"canonical_sha256":"d3f37e90420b0fb7e8709a96bfdd743212619b9e64c3933853b92201ee3205ba","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d3f37e90420b0fb7e8709a96bfdd743212619b9e64c3933853b92201ee3205ba","first_computed_at":"2026-07-05T03:13:37.862470Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:13:37.862470Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"KcZqa7jFmNvJW2BGFDehOfSfyYOwMH/LNVFvKbmw5Ecs25AsCCxWSt7VZNpSHf/WkwMlAwyA7+TjElM7RsWrAA==","signature_status":"signed_v1","signed_at":"2026-07-05T03:13:37.862944Z","signed_message":"canonical_sha256_bytes"},"source_id":"2109.05339","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0b45dd5375b0e204b42ec583799cee496cd30dd01ef6a272f8c856f9033b1264","sha256:95484c346ee8e149b8b73412568b7036b551489e744e2f21749065502a40c628"],"state_sha256":"a7e51ed856690da8b3474072efc0ba43bfd8d305d2a70c60dd073ec213bfaeff"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7rbVAuWHOtn9IEcijvpyW64c5t02hJzZgqvTHU9UN26f0/gLja629DWJXjhzxsGK6K2RChvb+GNSh75T4yRWCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-13T03:59:49.393414Z","bundle_sha256":"c76ec9ba3e5d6ace51c988a7c0a3df486f8997ec7515097e7f3031c1f7f3b8b7"}}