{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:WUXKPL64ZPEFNDPVIMUGJSQRKK","short_pith_number":"pith:WUXKPL64","canonical_record":{"source":{"id":"1601.08245","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2016-01-29T20:33:40Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"93d973099ee5a48a3266f3ebe0ae37598c37638d544ef6373886f87fbbd98abd","abstract_canon_sha256":"6f348abcadbeb5411d683d30ec350e978532a28c21091076518c353475741477"},"schema_version":"1.0"},"canonical_sha256":"b52ea7afdccbc8568df5432864ca1152b0f546d06e2f25a981592a40d6ca5bba","source":{"kind":"arxiv","id":"1601.08245","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1601.08245","created_at":"2026-05-18T00:58:34Z"},{"alias_kind":"arxiv_version","alias_value":"1601.08245v1","created_at":"2026-05-18T00:58:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1601.08245","created_at":"2026-05-18T00:58:34Z"},{"alias_kind":"pith_short_12","alias_value":"WUXKPL64ZPEF","created_at":"2026-05-18T12:30:51Z"},{"alias_kind":"pith_short_16","alias_value":"WUXKPL64ZPEFNDPV","created_at":"2026-05-18T12:30:51Z"},{"alias_kind":"pith_short_8","alias_value":"WUXKPL64","created_at":"2026-05-18T12:30:51Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:WUXKPL64ZPEFNDPVIMUGJSQRKK","target":"record","payload":{"canonical_record":{"source":{"id":"1601.08245","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2016-01-29T20:33:40Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"93d973099ee5a48a3266f3ebe0ae37598c37638d544ef6373886f87fbbd98abd","abstract_canon_sha256":"6f348abcadbeb5411d683d30ec350e978532a28c21091076518c353475741477"},"schema_version":"1.0"},"canonical_sha256":"b52ea7afdccbc8568df5432864ca1152b0f546d06e2f25a981592a40d6ca5bba","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:58:34.178021Z","signature_b64":"6POy4AxI+QfbOqd1aNxmQtZxYPYvB2TOeTAJHo2oWMk9oxAAhmNf/DYbPl3cgkSKjYXiIGn1oKmC0oUvKVV8DA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b52ea7afdccbc8568df5432864ca1152b0f546d06e2f25a981592a40d6ca5bba","last_reissued_at":"2026-05-18T00:58:34.177298Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:58:34.177298Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1601.08245","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":"2026-05-18T00:58:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oDnzAZxhxMztft+epp/YbPNx03V6oWQneKjr3TKMLuO3njI9PjiGhNcUmZnM12OMhMdF3uWVmzX3aqq6D60HAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T12:10:38.016128Z"},"content_sha256":"9d5b969d05e8b5dcf602a17dd6862769d2ce8c4398915212e38e8f6d288f1c19","schema_version":"1.0","event_id":"sha256:9d5b969d05e8b5dcf602a17dd6862769d2ce8c4398915212e38e8f6d288f1c19"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:WUXKPL64ZPEFNDPVIMUGJSQRKK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Kalman-Filter-Based Particle Tracking on Parallel Architectures at Hadron Colliders","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"physics.ins-det","authors_text":"Avi Yagil, Dan Riley, Frank W\\\"urthwein, Giuseppe Cerati, Kevin McDermott, Matev\\v{z} Tadel, Peter Elmer, Peter Wittich, Steven Lantz","submitted_at":"2016-01-29T20:33:40Z","abstract_excerpt":"Power density constraints are limiting the performance improvements of modern CPUs. To address this we have seen the introduction of lower-power, multi-core processors such as GPGPU, ARM and Intel MIC. To stay within the power density limits but still obtain Moore's Law performance/price gains, it will be necessary to parallelize algorithms to exploit larger numbers of lightweight cores and specialized functions like large vector units. Track finding and fitting is one of the most computationally challenging problems for event reconstruction in particle physics. At the High-Luminosity Large Ha"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1601.08245","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":"2026-05-18T00:58:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+0rwNnxkJW89vhlpsloxtIgYr1Dxw92q3PgApzAQ1UkQ4z7AA9sx9g6pkjgCkw1PXvYh8vralWuDA4mzDt1rDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T12:10:38.016762Z"},"content_sha256":"a687763b79f979fe9e5d9f6202526fe4c1ff75d662bfd853cd0860c1778fbc45","schema_version":"1.0","event_id":"sha256:a687763b79f979fe9e5d9f6202526fe4c1ff75d662bfd853cd0860c1778fbc45"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WUXKPL64ZPEFNDPVIMUGJSQRKK/bundle.json","state_url":"https://pith.science/pith/WUXKPL64ZPEFNDPVIMUGJSQRKK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WUXKPL64ZPEFNDPVIMUGJSQRKK/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":"2026-05-27T12:10:38Z","links":{"resolver":"https://pith.science/pith/WUXKPL64ZPEFNDPVIMUGJSQRKK","bundle":"https://pith.science/pith/WUXKPL64ZPEFNDPVIMUGJSQRKK/bundle.json","state":"https://pith.science/pith/WUXKPL64ZPEFNDPVIMUGJSQRKK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WUXKPL64ZPEFNDPVIMUGJSQRKK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:WUXKPL64ZPEFNDPVIMUGJSQRKK","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":"6f348abcadbeb5411d683d30ec350e978532a28c21091076518c353475741477","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2016-01-29T20:33:40Z","title_canon_sha256":"93d973099ee5a48a3266f3ebe0ae37598c37638d544ef6373886f87fbbd98abd"},"schema_version":"1.0","source":{"id":"1601.08245","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1601.08245","created_at":"2026-05-18T00:58:34Z"},{"alias_kind":"arxiv_version","alias_value":"1601.08245v1","created_at":"2026-05-18T00:58:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1601.08245","created_at":"2026-05-18T00:58:34Z"},{"alias_kind":"pith_short_12","alias_value":"WUXKPL64ZPEF","created_at":"2026-05-18T12:30:51Z"},{"alias_kind":"pith_short_16","alias_value":"WUXKPL64ZPEFNDPV","created_at":"2026-05-18T12:30:51Z"},{"alias_kind":"pith_short_8","alias_value":"WUXKPL64","created_at":"2026-05-18T12:30:51Z"}],"graph_snapshots":[{"event_id":"sha256:a687763b79f979fe9e5d9f6202526fe4c1ff75d662bfd853cd0860c1778fbc45","target":"graph","created_at":"2026-05-18T00:58:34Z","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":"Power density constraints are limiting the performance improvements of modern CPUs. To address this we have seen the introduction of lower-power, multi-core processors such as GPGPU, ARM and Intel MIC. To stay within the power density limits but still obtain Moore's Law performance/price gains, it will be necessary to parallelize algorithms to exploit larger numbers of lightweight cores and specialized functions like large vector units. Track finding and fitting is one of the most computationally challenging problems for event reconstruction in particle physics. At the High-Luminosity Large Ha","authors_text":"Avi Yagil, Dan Riley, Frank W\\\"urthwein, Giuseppe Cerati, Kevin McDermott, Matev\\v{z} Tadel, Peter Elmer, Peter Wittich, Steven Lantz","cross_cats":["hep-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2016-01-29T20:33:40Z","title":"Kalman-Filter-Based Particle Tracking on Parallel Architectures at Hadron Colliders"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1601.08245","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":"sha256:9d5b969d05e8b5dcf602a17dd6862769d2ce8c4398915212e38e8f6d288f1c19","target":"record","created_at":"2026-05-18T00:58:34Z","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":"6f348abcadbeb5411d683d30ec350e978532a28c21091076518c353475741477","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2016-01-29T20:33:40Z","title_canon_sha256":"93d973099ee5a48a3266f3ebe0ae37598c37638d544ef6373886f87fbbd98abd"},"schema_version":"1.0","source":{"id":"1601.08245","kind":"arxiv","version":1}},"canonical_sha256":"b52ea7afdccbc8568df5432864ca1152b0f546d06e2f25a981592a40d6ca5bba","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b52ea7afdccbc8568df5432864ca1152b0f546d06e2f25a981592a40d6ca5bba","first_computed_at":"2026-05-18T00:58:34.177298Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:58:34.177298Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"6POy4AxI+QfbOqd1aNxmQtZxYPYvB2TOeTAJHo2oWMk9oxAAhmNf/DYbPl3cgkSKjYXiIGn1oKmC0oUvKVV8DA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:58:34.178021Z","signed_message":"canonical_sha256_bytes"},"source_id":"1601.08245","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9d5b969d05e8b5dcf602a17dd6862769d2ce8c4398915212e38e8f6d288f1c19","sha256:a687763b79f979fe9e5d9f6202526fe4c1ff75d662bfd853cd0860c1778fbc45"],"state_sha256":"eee606065f2c6f10882ac1e2d891d9ca172eee31563be1f077c6a201734896ce"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cLRJYntNVOJeBB6cpGcqq1IzpLAcfmNEopkOZTovtZRoQ+NbouaOnvM1NtvHGsvhQm55yklkJFNZMGJ+fhuUAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T12:10:38.020392Z","bundle_sha256":"9747e3c1542a03f29eddfbbab9d4c725742d52c026518eb8d6b3f33bf6d0295e"}}