{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2002:4UHW7HLCWHOCMXZHSH7AC4ANMG","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":"892d1daa19647452e958aa5e98852da07ff4af9b2e1f81c79bebf4e72ddd81b2","cross_cats_sorted":[],"license":"","primary_cat":"hep-ph","submitted_at":"2002-01-25T11:41:06Z","title_canon_sha256":"e3e23f942d19678f3072678fc82e637be7645df6dfbd3853145a9afe1066cea1"},"schema_version":"1.0","source":{"id":"hep-ph/0201241","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ph/0201241","created_at":"2026-07-04T16:33:59Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ph/0201241v1","created_at":"2026-07-04T16:33:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ph/0201241","created_at":"2026-07-04T16:33:59Z"},{"alias_kind":"pith_short_12","alias_value":"4UHW7HLCWHOC","created_at":"2026-07-04T16:33:59Z"},{"alias_kind":"pith_short_16","alias_value":"4UHW7HLCWHOCMXZH","created_at":"2026-07-04T16:33:59Z"},{"alias_kind":"pith_short_8","alias_value":"4UHW7HLC","created_at":"2026-07-04T16:33:59Z"}],"graph_snapshots":[{"event_id":"sha256:66f6a55d6162c59529b1cffa08823d04f89f9de8f6843342fa55014ca7d61d6c","target":"graph","created_at":"2026-07-04T16:33:59Z","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/hep-ph/0201241/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Despite its very short lifetime positronium provides us with a number of accurate tests of the bound state QED. In this note a brief overview of QED theory and precision experiments on the spectrum and annihilation decay of the positronium atom is presented. Special attention is paid to the accuracy of theoretical predictions.","authors_text":"Garching), Max-Planck-Institut fuer Quantenoptik, Savely G. Karshenboim (D. I. Mendeleev Institute for Metrology, St. Petersburg","cross_cats":[],"headline":"","license":"","primary_cat":"hep-ph","submitted_at":"2002-01-25T11:41:06Z","title":"Precision study of positronium and precision tests of the bound state QED"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/0201241","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":"sha256:66991d2b5b6bb1548cc2b6e514b32025c1ea6b0f828ab919f21867225d6eb01f","target":"record","created_at":"2026-07-04T16:33:59Z","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":"892d1daa19647452e958aa5e98852da07ff4af9b2e1f81c79bebf4e72ddd81b2","cross_cats_sorted":[],"license":"","primary_cat":"hep-ph","submitted_at":"2002-01-25T11:41:06Z","title_canon_sha256":"e3e23f942d19678f3072678fc82e637be7645df6dfbd3853145a9afe1066cea1"},"schema_version":"1.0","source":{"id":"hep-ph/0201241","kind":"arxiv","version":1}},"canonical_sha256":"e50f6f9d62b1dc265f2791fe01700d6183dfb4656ed027fb6502b28b5a08fd29","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e50f6f9d62b1dc265f2791fe01700d6183dfb4656ed027fb6502b28b5a08fd29","first_computed_at":"2026-07-04T16:33:59.642110Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:33:59.642110Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"RYCSiWbtQsE3+NEv/nM5HFR/dmaGqDmWmSugm11h6uwZbrS+734VUG9rP0Tf/haMeVPqbUYVbgC9vw1pabXQAA==","signature_status":"signed_v1","signed_at":"2026-07-04T16:33:59.642539Z","signed_message":"canonical_sha256_bytes"},"source_id":"hep-ph/0201241","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:66991d2b5b6bb1548cc2b6e514b32025c1ea6b0f828ab919f21867225d6eb01f","sha256:66f6a55d6162c59529b1cffa08823d04f89f9de8f6843342fa55014ca7d61d6c"],"state_sha256":"e15bbc2e744c429a206f63fdf3e53f59fa777471fcc8032a93f0cf55a36bc693"}