{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:CUJV5PIGXCYSUEOJPENM556SP6","short_pith_number":"pith:CUJV5PIG","canonical_record":{"source":{"id":"2007.01023","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ins-det","submitted_at":"2020-07-02T11:19:44Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"052b058e501b769c6c6c7aca6f55a5f16944384f99c20626970a57f99540927d","abstract_canon_sha256":"a8199d99e254b6638d600a6731b8d2956946de532630ce146b6d1d39217682d4"},"schema_version":"1.0"},"canonical_sha256":"15135ebd06b8b12a11c9791acef7d27f88bf1a0f5fb71b3b5f38c497c5e06d1f","source":{"kind":"arxiv","id":"2007.01023","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2007.01023","created_at":"2026-07-05T01:15:44Z"},{"alias_kind":"arxiv_version","alias_value":"2007.01023v1","created_at":"2026-07-05T01:15:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2007.01023","created_at":"2026-07-05T01:15:44Z"},{"alias_kind":"pith_short_12","alias_value":"CUJV5PIGXCYS","created_at":"2026-07-05T01:15:44Z"},{"alias_kind":"pith_short_16","alias_value":"CUJV5PIGXCYSUEOJ","created_at":"2026-07-05T01:15:44Z"},{"alias_kind":"pith_short_8","alias_value":"CUJV5PIG","created_at":"2026-07-05T01:15:44Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:CUJV5PIGXCYSUEOJPENM556SP6","target":"record","payload":{"canonical_record":{"source":{"id":"2007.01023","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ins-det","submitted_at":"2020-07-02T11:19:44Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"052b058e501b769c6c6c7aca6f55a5f16944384f99c20626970a57f99540927d","abstract_canon_sha256":"a8199d99e254b6638d600a6731b8d2956946de532630ce146b6d1d39217682d4"},"schema_version":"1.0"},"canonical_sha256":"15135ebd06b8b12a11c9791acef7d27f88bf1a0f5fb71b3b5f38c497c5e06d1f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:15:44.074501Z","signature_b64":"+1LgFjgVFXdfO//EkhWTidGdg0HRkp9zzbAKYpZzfWbHIfs2ioh/qkAstSvxU35boEX4fwwETH2Ug0iNQbQCAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"15135ebd06b8b12a11c9791acef7d27f88bf1a0f5fb71b3b5f38c497c5e06d1f","last_reissued_at":"2026-07-05T01:15:44.073956Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:15:44.073956Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2007.01023","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":"2026-07-05T01:15:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"No2Y0h5tbdIIy6Hh8kl5i/selCYrfu1A2CQAjBZwKRowkvf5aFj6nFY82Z/RtBHz1P8wUX3P6NP2XmU0CwckAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-13T08:42:50.934982Z"},"content_sha256":"de4c951f2b6ea08da62f1cb86b7ea3ddc18321f825bf9c94460e4c0dad3a064b","schema_version":"1.0","event_id":"sha256:de4c951f2b6ea08da62f1cb86b7ea3ddc18321f825bf9c94460e4c0dad3a064b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:CUJV5PIGXCYSUEOJPENM556SP6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"An updated hybrid deep learning algorithm for identifying and locating primary vertices","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"physics.ins-det","authors_text":"Constantin Weisser, Henry F. Schreiner, Marian Stahl, Michael D. Sokoloff, Mike Williams (On behalf of the LHCb Real Time Analysis project), Sarah Carl, Simon Akar, Thomas J. Boettcher","submitted_at":"2020-07-02T11:19:44Z","abstract_excerpt":"We present an improved hybrid algorithm for vertexing, that combines deep learning with conventional methods. Even though the algorithm is a generic approach to vertex finding, we focus here on it's application as an alternative Primary Vertex (PV) finding tool for the LHCb experiment.\n  In the transition to Run 3 in 2021, LHCb will undergo a major luminosity upgrade, going from 1.1 to 5.6 expected visible PVs per event, and it will adopt a purely software trigger. We use a custom kernel to transform the sparse 3D space of hits and tracks into a dense 1D dataset, and then apply Deep Learning t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2007.01023","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/2007.01023/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":"2026-07-05T01:15:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1RZp0jX67kGUNZygC7HozyScARL0vvMVjKDs+FQ5GIvN6C/VNE/nEYu1s/UWQbnhD9SQWdDWsWJCzNk1WWVHDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-13T08:42:50.935957Z"},"content_sha256":"d1dc792e8278b24eb41514d8edafec00d20afe6b47b0af28389e93904cb123de","schema_version":"1.0","event_id":"sha256:d1dc792e8278b24eb41514d8edafec00d20afe6b47b0af28389e93904cb123de"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CUJV5PIGXCYSUEOJPENM556SP6/bundle.json","state_url":"https://pith.science/pith/CUJV5PIGXCYSUEOJPENM556SP6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CUJV5PIGXCYSUEOJPENM556SP6/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":"2026-08-13T08:42:50Z","links":{"resolver":"https://pith.science/pith/CUJV5PIGXCYSUEOJPENM556SP6","bundle":"https://pith.science/pith/CUJV5PIGXCYSUEOJPENM556SP6/bundle.json","state":"https://pith.science/pith/CUJV5PIGXCYSUEOJPENM556SP6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CUJV5PIGXCYSUEOJPENM556SP6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:CUJV5PIGXCYSUEOJPENM556SP6","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":"a8199d99e254b6638d600a6731b8d2956946de532630ce146b6d1d39217682d4","cross_cats_sorted":["hep-ex"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ins-det","submitted_at":"2020-07-02T11:19:44Z","title_canon_sha256":"052b058e501b769c6c6c7aca6f55a5f16944384f99c20626970a57f99540927d"},"schema_version":"1.0","source":{"id":"2007.01023","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2007.01023","created_at":"2026-07-05T01:15:44Z"},{"alias_kind":"arxiv_version","alias_value":"2007.01023v1","created_at":"2026-07-05T01:15:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2007.01023","created_at":"2026-07-05T01:15:44Z"},{"alias_kind":"pith_short_12","alias_value":"CUJV5PIGXCYS","created_at":"2026-07-05T01:15:44Z"},{"alias_kind":"pith_short_16","alias_value":"CUJV5PIGXCYSUEOJ","created_at":"2026-07-05T01:15:44Z"},{"alias_kind":"pith_short_8","alias_value":"CUJV5PIG","created_at":"2026-07-05T01:15:44Z"}],"graph_snapshots":[{"event_id":"sha256:d1dc792e8278b24eb41514d8edafec00d20afe6b47b0af28389e93904cb123de","target":"graph","created_at":"2026-07-05T01:15:44Z","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/2007.01023/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present an improved hybrid algorithm for vertexing, that combines deep learning with conventional methods. Even though the algorithm is a generic approach to vertex finding, we focus here on it's application as an alternative Primary Vertex (PV) finding tool for the LHCb experiment.\n  In the transition to Run 3 in 2021, LHCb will undergo a major luminosity upgrade, going from 1.1 to 5.6 expected visible PVs per event, and it will adopt a purely software trigger. We use a custom kernel to transform the sparse 3D space of hits and tracks into a dense 1D dataset, and then apply Deep Learning t","authors_text":"Constantin Weisser, Henry F. Schreiner, Marian Stahl, Michael D. Sokoloff, Mike Williams (On behalf of the LHCb Real Time Analysis project), Sarah Carl, Simon Akar, Thomas J. Boettcher","cross_cats":["hep-ex"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ins-det","submitted_at":"2020-07-02T11:19:44Z","title":"An updated hybrid deep learning algorithm for identifying and locating primary vertices"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2007.01023","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:de4c951f2b6ea08da62f1cb86b7ea3ddc18321f825bf9c94460e4c0dad3a064b","target":"record","created_at":"2026-07-05T01:15:44Z","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":"a8199d99e254b6638d600a6731b8d2956946de532630ce146b6d1d39217682d4","cross_cats_sorted":["hep-ex"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ins-det","submitted_at":"2020-07-02T11:19:44Z","title_canon_sha256":"052b058e501b769c6c6c7aca6f55a5f16944384f99c20626970a57f99540927d"},"schema_version":"1.0","source":{"id":"2007.01023","kind":"arxiv","version":1}},"canonical_sha256":"15135ebd06b8b12a11c9791acef7d27f88bf1a0f5fb71b3b5f38c497c5e06d1f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"15135ebd06b8b12a11c9791acef7d27f88bf1a0f5fb71b3b5f38c497c5e06d1f","first_computed_at":"2026-07-05T01:15:44.073956Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:15:44.073956Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+1LgFjgVFXdfO//EkhWTidGdg0HRkp9zzbAKYpZzfWbHIfs2ioh/qkAstSvxU35boEX4fwwETH2Ug0iNQbQCAg==","signature_status":"signed_v1","signed_at":"2026-07-05T01:15:44.074501Z","signed_message":"canonical_sha256_bytes"},"source_id":"2007.01023","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:de4c951f2b6ea08da62f1cb86b7ea3ddc18321f825bf9c94460e4c0dad3a064b","sha256:d1dc792e8278b24eb41514d8edafec00d20afe6b47b0af28389e93904cb123de"],"state_sha256":"44735c0fd26fe561870a5b690099f57bc98285071618ec44bf5c2e05907d7404"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2tG7T338dbT1iQ/FPKWBL5uch0MQ/aKR+9ZEUw5xCZl0Rsmzm43KDuqv0wfcHFkVa6no5YXONWNUeYImiDpPDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-13T08:42:50.942536Z","bundle_sha256":"d64bfbb2bf6a81c05e688d0640110fb716d9090a64fd7988f849504f7fdd3fd5"}}