{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:DSPPI2IBDDHCUPFOEEKLZVEIGF","short_pith_number":"pith:DSPPI2IB","canonical_record":{"source":{"id":"1707.02826","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2017-07-10T12:37:48Z","cross_cats_sorted":[],"title_canon_sha256":"e41311f26cb06eef428292c1563c110e6cbbdac2cf58858f6879fea9308e7385","abstract_canon_sha256":"0812aaad467671ee0b398d354844754943f0fcb951cd4def1bf65d0a2ad03441"},"schema_version":"1.0"},"canonical_sha256":"1c9ef4690118ce2a3cae2114bcd488317e5dff2d2d8036534eb3947188504457","source":{"kind":"arxiv","id":"1707.02826","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1707.02826","created_at":"2026-05-18T00:28:35Z"},{"alias_kind":"arxiv_version","alias_value":"1707.02826v1","created_at":"2026-05-18T00:28:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1707.02826","created_at":"2026-05-18T00:28:35Z"},{"alias_kind":"pith_short_12","alias_value":"DSPPI2IBDDHC","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_16","alias_value":"DSPPI2IBDDHCUPFO","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_8","alias_value":"DSPPI2IB","created_at":"2026-05-18T12:31:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:DSPPI2IBDDHCUPFOEEKLZVEIGF","target":"record","payload":{"canonical_record":{"source":{"id":"1707.02826","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2017-07-10T12:37:48Z","cross_cats_sorted":[],"title_canon_sha256":"e41311f26cb06eef428292c1563c110e6cbbdac2cf58858f6879fea9308e7385","abstract_canon_sha256":"0812aaad467671ee0b398d354844754943f0fcb951cd4def1bf65d0a2ad03441"},"schema_version":"1.0"},"canonical_sha256":"1c9ef4690118ce2a3cae2114bcd488317e5dff2d2d8036534eb3947188504457","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:28:35.329519Z","signature_b64":"Y1J38ISCd8sqtBImhFQLv0DiGgk/CjcPoyOE8Tfehm0GMCkSuuc7jJB6qEWg1QrvJUrgSsO9cdbuIG3drfj3BA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1c9ef4690118ce2a3cae2114bcd488317e5dff2d2d8036534eb3947188504457","last_reissued_at":"2026-05-18T00:28:35.328844Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:28:35.328844Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1707.02826","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":"2026-05-18T00:28:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CtSdu6vrLwEwT+/1dUxsEekXaMvLkGPbr6u7BXWvtvSWx5xrsxeBcqO3640K6skwPJQZ/QvdV//gR8eLQUTyBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-20T08:01:57.301030Z"},"content_sha256":"7f3ff93679f932653ea3375962f10af3108ea809b08c59bf0829859866b968f6","schema_version":"1.0","event_id":"sha256:7f3ff93679f932653ea3375962f10af3108ea809b08c59bf0829859866b968f6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:DSPPI2IBDDHCUPFOEEKLZVEIGF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Study of the material of the ATLAS inner detector for Run 2 of the LHC","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"ATLAS Collaboration","submitted_at":"2017-07-10T12:37:48Z","abstract_excerpt":"The ATLAS inner detector comprises three different sub-detectors: the pixel detector, the silicon strip tracker, and the transition-radiation drift-tube tracker. The Insertable $B$-Layer, a new innermost pixel layer, was installed during the shutdown period in 2014, together with modifications to the layout of the cables and support structures of the existing pixel detector. The material in the inner detector is studied with several methods, using a low-luminosity $\\sqrt{s}=13$ TeV $pp$ collision sample corresponding to around $2.0\\,\\mathrm{nb}^{-1}$ collected in 2015 with the ATLAS experiment"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1707.02826","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":"2026-05-18T00:28:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ftvD4jdWOTK4G14GpVdPtMpvjqQ/wLSLACZawS+9f7NbG8RLFz7tZ/qoRjI94k1514pWXYJEEPrF/ckEW0hdDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-20T08:01:57.301397Z"},"content_sha256":"15ce07cec89853e09dc136758993268129860691e2e7a452c9a0ec8de9ae05a2","schema_version":"1.0","event_id":"sha256:15ce07cec89853e09dc136758993268129860691e2e7a452c9a0ec8de9ae05a2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DSPPI2IBDDHCUPFOEEKLZVEIGF/bundle.json","state_url":"https://pith.science/pith/DSPPI2IBDDHCUPFOEEKLZVEIGF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DSPPI2IBDDHCUPFOEEKLZVEIGF/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":"2026-05-20T08:01:57Z","links":{"resolver":"https://pith.science/pith/DSPPI2IBDDHCUPFOEEKLZVEIGF","bundle":"https://pith.science/pith/DSPPI2IBDDHCUPFOEEKLZVEIGF/bundle.json","state":"https://pith.science/pith/DSPPI2IBDDHCUPFOEEKLZVEIGF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DSPPI2IBDDHCUPFOEEKLZVEIGF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:DSPPI2IBDDHCUPFOEEKLZVEIGF","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":"0812aaad467671ee0b398d354844754943f0fcb951cd4def1bf65d0a2ad03441","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2017-07-10T12:37:48Z","title_canon_sha256":"e41311f26cb06eef428292c1563c110e6cbbdac2cf58858f6879fea9308e7385"},"schema_version":"1.0","source":{"id":"1707.02826","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1707.02826","created_at":"2026-05-18T00:28:35Z"},{"alias_kind":"arxiv_version","alias_value":"1707.02826v1","created_at":"2026-05-18T00:28:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1707.02826","created_at":"2026-05-18T00:28:35Z"},{"alias_kind":"pith_short_12","alias_value":"DSPPI2IBDDHC","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_16","alias_value":"DSPPI2IBDDHCUPFO","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_8","alias_value":"DSPPI2IB","created_at":"2026-05-18T12:31:12Z"}],"graph_snapshots":[{"event_id":"sha256:15ce07cec89853e09dc136758993268129860691e2e7a452c9a0ec8de9ae05a2","target":"graph","created_at":"2026-05-18T00:28:35Z","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":"The ATLAS inner detector comprises three different sub-detectors: the pixel detector, the silicon strip tracker, and the transition-radiation drift-tube tracker. The Insertable $B$-Layer, a new innermost pixel layer, was installed during the shutdown period in 2014, together with modifications to the layout of the cables and support structures of the existing pixel detector. The material in the inner detector is studied with several methods, using a low-luminosity $\\sqrt{s}=13$ TeV $pp$ collision sample corresponding to around $2.0\\,\\mathrm{nb}^{-1}$ collected in 2015 with the ATLAS experiment","authors_text":"ATLAS Collaboration","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2017-07-10T12:37:48Z","title":"Study of the material of the ATLAS inner detector for Run 2 of the LHC"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1707.02826","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":"sha256:7f3ff93679f932653ea3375962f10af3108ea809b08c59bf0829859866b968f6","target":"record","created_at":"2026-05-18T00:28:35Z","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":"0812aaad467671ee0b398d354844754943f0fcb951cd4def1bf65d0a2ad03441","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2017-07-10T12:37:48Z","title_canon_sha256":"e41311f26cb06eef428292c1563c110e6cbbdac2cf58858f6879fea9308e7385"},"schema_version":"1.0","source":{"id":"1707.02826","kind":"arxiv","version":1}},"canonical_sha256":"1c9ef4690118ce2a3cae2114bcd488317e5dff2d2d8036534eb3947188504457","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1c9ef4690118ce2a3cae2114bcd488317e5dff2d2d8036534eb3947188504457","first_computed_at":"2026-05-18T00:28:35.328844Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:28:35.328844Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Y1J38ISCd8sqtBImhFQLv0DiGgk/CjcPoyOE8Tfehm0GMCkSuuc7jJB6qEWg1QrvJUrgSsO9cdbuIG3drfj3BA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:28:35.329519Z","signed_message":"canonical_sha256_bytes"},"source_id":"1707.02826","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7f3ff93679f932653ea3375962f10af3108ea809b08c59bf0829859866b968f6","sha256:15ce07cec89853e09dc136758993268129860691e2e7a452c9a0ec8de9ae05a2"],"state_sha256":"7476f51816d69aed48b7a8a75e524a4302adf0fdd2d5c56740661cbc0f07a455"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jeOmOdNJhj9elc6NPYcPZGEV0zKpUzhKZkL3PzKGrb8PiEKzyPzT1GK4KqXVl5YY+ufDTRSi4wjSTEC3GwzpCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-20T08:01:57.303357Z","bundle_sha256":"029b02a8eafb80cab3917236996b042dd623afc68a224418c9fd50fd4dd06b4e"}}