{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:SRZHZOVEIWW3TXCXOBMGRN4NGV","short_pith_number":"pith:SRZHZOVE","canonical_record":{"source":{"id":"2111.09611","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2021-11-18T10:35:30Z","cross_cats_sorted":[],"title_canon_sha256":"76bd03ed4f38bad74cfdde027c22e2ca88ad38de6db8f367cbe0b4cdf4f638d9","abstract_canon_sha256":"6f9f1016b394e6971bfe5f04955cf87c749af00155c28e07acec2990a85010ab"},"schema_version":"1.0"},"canonical_sha256":"94727cbaa445adb9dc57705868b78d356f6dda80de5a62d5a00da1dd05274675","source":{"kind":"arxiv","id":"2111.09611","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2111.09611","created_at":"2026-07-05T03:33:13Z"},{"alias_kind":"arxiv_version","alias_value":"2111.09611v1","created_at":"2026-07-05T03:33:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2111.09611","created_at":"2026-07-05T03:33:13Z"},{"alias_kind":"pith_short_12","alias_value":"SRZHZOVEIWW3","created_at":"2026-07-05T03:33:13Z"},{"alias_kind":"pith_short_16","alias_value":"SRZHZOVEIWW3TXCX","created_at":"2026-07-05T03:33:13Z"},{"alias_kind":"pith_short_8","alias_value":"SRZHZOVE","created_at":"2026-07-05T03:33:13Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:SRZHZOVEIWW3TXCXOBMGRN4NGV","target":"record","payload":{"canonical_record":{"source":{"id":"2111.09611","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2021-11-18T10:35:30Z","cross_cats_sorted":[],"title_canon_sha256":"76bd03ed4f38bad74cfdde027c22e2ca88ad38de6db8f367cbe0b4cdf4f638d9","abstract_canon_sha256":"6f9f1016b394e6971bfe5f04955cf87c749af00155c28e07acec2990a85010ab"},"schema_version":"1.0"},"canonical_sha256":"94727cbaa445adb9dc57705868b78d356f6dda80de5a62d5a00da1dd05274675","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:33:13.217114Z","signature_b64":"7QqFlULBD+7dWMEHkUzFZwV+GVPoW35ddULmZl9/fTwuwYi7tx3jbHtmgEz757I5w+93l1Bu1NawLExAhtwNDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"94727cbaa445adb9dc57705868b78d356f6dda80de5a62d5a00da1dd05274675","last_reissued_at":"2026-07-05T03:33:13.216623Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:33:13.216623Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2111.09611","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":"2026-07-05T03:33:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"drC3vC0uAhq1zLr1NxdtUigPFyOpm3xlD9Ql3wBzi2BvfNFNUsYcw22+LTA/V9GdlnRUPLsrAomGM87kk+I/AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T13:33:51.602263Z"},"content_sha256":"4c98e597bdc80ba0380c308d7cf959efa2010be7738bc055afd7886f59107d4e","schema_version":"1.0","event_id":"sha256:4c98e597bdc80ba0380c308d7cf959efa2010be7738bc055afd7886f59107d4e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:SRZHZOVEIWW3TXCXOBMGRN4NGV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The LHCspin project","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"E. Steffens, G. Ciullo, G. Tagliente, L.L. Pappalardo, M. Santimaria, P. Di Nezza, P. Lenisa, V. Carassiti","submitted_at":"2021-11-18T10:35:30Z","abstract_excerpt":"LHCspin aims to upgrade the recently installed unpolarized gas target (SMOG2) in front of the LHCb spectrometer to a polarised one. This task requires, in the next few years, innovative solutions and cutting-edge technologies, and will allow the exploration of a unique kinematic regime and new reaction processes. With the instrumentation of the proposed target system, LHCb will become the first experiment delivering simultaneously unpolarized beam-beam at $\\sqrt{s}$ = 14 TeV, and unpolarized and polarized beam-target collisions at $\\sqrt{s_{NN}}~\\sim$ 100 GeV. LHCspin could open new physics fr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2111.09611","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/2111.09611/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":"2026-07-05T03:33:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zX9wJjANrylS10DRT4XqhVVuO3VAr3PW2Dewwk+3FNHOlZ2Hw67Kxb+XacRrIJtibgrJUC0tiiwViqaeOEB5DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T13:33:51.602777Z"},"content_sha256":"52b826fc73b52742365f144bf92407a109f5c6e4677ac804e2226246180c7586","schema_version":"1.0","event_id":"sha256:52b826fc73b52742365f144bf92407a109f5c6e4677ac804e2226246180c7586"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SRZHZOVEIWW3TXCXOBMGRN4NGV/bundle.json","state_url":"https://pith.science/pith/SRZHZOVEIWW3TXCXOBMGRN4NGV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SRZHZOVEIWW3TXCXOBMGRN4NGV/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":"2026-08-14T13:33:51Z","links":{"resolver":"https://pith.science/pith/SRZHZOVEIWW3TXCXOBMGRN4NGV","bundle":"https://pith.science/pith/SRZHZOVEIWW3TXCXOBMGRN4NGV/bundle.json","state":"https://pith.science/pith/SRZHZOVEIWW3TXCXOBMGRN4NGV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SRZHZOVEIWW3TXCXOBMGRN4NGV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:SRZHZOVEIWW3TXCXOBMGRN4NGV","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":"6f9f1016b394e6971bfe5f04955cf87c749af00155c28e07acec2990a85010ab","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2021-11-18T10:35:30Z","title_canon_sha256":"76bd03ed4f38bad74cfdde027c22e2ca88ad38de6db8f367cbe0b4cdf4f638d9"},"schema_version":"1.0","source":{"id":"2111.09611","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2111.09611","created_at":"2026-07-05T03:33:13Z"},{"alias_kind":"arxiv_version","alias_value":"2111.09611v1","created_at":"2026-07-05T03:33:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2111.09611","created_at":"2026-07-05T03:33:13Z"},{"alias_kind":"pith_short_12","alias_value":"SRZHZOVEIWW3","created_at":"2026-07-05T03:33:13Z"},{"alias_kind":"pith_short_16","alias_value":"SRZHZOVEIWW3TXCX","created_at":"2026-07-05T03:33:13Z"},{"alias_kind":"pith_short_8","alias_value":"SRZHZOVE","created_at":"2026-07-05T03:33:13Z"}],"graph_snapshots":[{"event_id":"sha256:52b826fc73b52742365f144bf92407a109f5c6e4677ac804e2226246180c7586","target":"graph","created_at":"2026-07-05T03:33:13Z","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/2111.09611/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"LHCspin aims to upgrade the recently installed unpolarized gas target (SMOG2) in front of the LHCb spectrometer to a polarised one. This task requires, in the next few years, innovative solutions and cutting-edge technologies, and will allow the exploration of a unique kinematic regime and new reaction processes. With the instrumentation of the proposed target system, LHCb will become the first experiment delivering simultaneously unpolarized beam-beam at $\\sqrt{s}$ = 14 TeV, and unpolarized and polarized beam-target collisions at $\\sqrt{s_{NN}}~\\sim$ 100 GeV. LHCspin could open new physics fr","authors_text":"E. Steffens, G. Ciullo, G. Tagliente, L.L. Pappalardo, M. Santimaria, P. Di Nezza, P. Lenisa, V. Carassiti","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2021-11-18T10:35:30Z","title":"The LHCspin project"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2111.09611","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":"sha256:4c98e597bdc80ba0380c308d7cf959efa2010be7738bc055afd7886f59107d4e","target":"record","created_at":"2026-07-05T03:33:13Z","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":"6f9f1016b394e6971bfe5f04955cf87c749af00155c28e07acec2990a85010ab","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2021-11-18T10:35:30Z","title_canon_sha256":"76bd03ed4f38bad74cfdde027c22e2ca88ad38de6db8f367cbe0b4cdf4f638d9"},"schema_version":"1.0","source":{"id":"2111.09611","kind":"arxiv","version":1}},"canonical_sha256":"94727cbaa445adb9dc57705868b78d356f6dda80de5a62d5a00da1dd05274675","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"94727cbaa445adb9dc57705868b78d356f6dda80de5a62d5a00da1dd05274675","first_computed_at":"2026-07-05T03:33:13.216623Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:33:13.216623Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"7QqFlULBD+7dWMEHkUzFZwV+GVPoW35ddULmZl9/fTwuwYi7tx3jbHtmgEz757I5w+93l1Bu1NawLExAhtwNDg==","signature_status":"signed_v1","signed_at":"2026-07-05T03:33:13.217114Z","signed_message":"canonical_sha256_bytes"},"source_id":"2111.09611","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4c98e597bdc80ba0380c308d7cf959efa2010be7738bc055afd7886f59107d4e","sha256:52b826fc73b52742365f144bf92407a109f5c6e4677ac804e2226246180c7586"],"state_sha256":"787fed2721d6c4796a9bd9dc303a021480f5e9b94da05aba7cbc3a235d7dd2a8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"k5LmATuJJ2IG+Jzrty0krgLmWmfKahlJz83wgpvF8CwjUPZIcYh/yFIdRCZqZMLctAghJF7anYgqQm5COSIkCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-14T13:33:51.606744Z","bundle_sha256":"8a588d707a7e268119af731d2c7bfd01fcb01cb66c9ab3829df2a0c2dc92cbf0"}}