{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2006:TM2VIH7JGASPTNAT3K7LDAMRIC","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":"ab1a5a241fea026a64939b984edd15fd901992be9a3910852580bfc9499b96a3","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2006-03-06T14:19:28Z","title_canon_sha256":"157e473e9f9dccaa54dbdadc9a24fdba4ab68015155cb366016907fe80da894f"},"schema_version":"1.0","source":{"id":"astro-ph/0603131","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0603131","created_at":"2026-07-04T15:25:44Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0603131v2","created_at":"2026-07-04T15:25:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0603131","created_at":"2026-07-04T15:25:44Z"},{"alias_kind":"pith_short_12","alias_value":"TM2VIH7JGASP","created_at":"2026-07-04T15:25:44Z"},{"alias_kind":"pith_short_16","alias_value":"TM2VIH7JGASPTNAT","created_at":"2026-07-04T15:25:44Z"},{"alias_kind":"pith_short_8","alias_value":"TM2VIH7J","created_at":"2026-07-04T15:25:44Z"}],"graph_snapshots":[{"event_id":"sha256:8fd53933737f899dec58adb8b688cc8f7651c8b4f5b71a744d98ff15d9bfc2dc","target":"graph","created_at":"2026-07-04T15:25:44Z","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/astro-ph/0603131/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We report on the measurement of the specific activity of Ar-39 in natural argon. The measurement was performed with a 2.3-liter two-phase (liquid and gas) argon drift chamber. The detector was developed by the WARP Collaboration as a prototype detector for WIMP Dark Matter searches with argon as a target. The detector was operated for more than two years at Laboratori Nazionali del Gran Sasso, Italy, at a depth of 3,400 m w.e. The specific activity measured for Ar-39 is 1.01 +/- 0.02(stat) +/- 0.08(syst) Bq per kg of natural Ar.","authors_text":"A.G. Cocco, A.M. Szelc, A. Rappoldi, C. Galbiati, C. Montanari, C. Rubbia, C. Vignoli, E. Calligarich, F. Calaprice, F. Carbonara, F. Cavanna, F. Di Pompeo, G. Fiorillo, G.L. Raselli, G. Mangano, L. Grandi, L. Pandola, M. Cambiaghi, M. Roncadelli, M. Rossella, N. Ferrari, P. Benetti, R. Santorelli, Y. Zhao","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2006-03-06T14:19:28Z","title":"Measurement of the specific activity of Ar-39 in natural argon"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0603131","kind":"arxiv","version":2},"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":"sha256:472745942d3bde73f8bdbe7b109984f10cdf1a3d831c44b0b1fc57882df78736","target":"record","created_at":"2026-07-04T15:25:44Z","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":"ab1a5a241fea026a64939b984edd15fd901992be9a3910852580bfc9499b96a3","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2006-03-06T14:19:28Z","title_canon_sha256":"157e473e9f9dccaa54dbdadc9a24fdba4ab68015155cb366016907fe80da894f"},"schema_version":"1.0","source":{"id":"astro-ph/0603131","kind":"arxiv","version":2}},"canonical_sha256":"9b35541fe93024f9b413dabeb1819140941d4c19df965ebfa68b4bf8ab393e7b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9b35541fe93024f9b413dabeb1819140941d4c19df965ebfa68b4bf8ab393e7b","first_computed_at":"2026-07-04T15:25:44.490631Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:25:44.490631Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"XDHxCo2jA6XrpiDUik+vni4gRspLtgjc5BZmz1wMyU6G3h7Oqkbgw0o//Ygup4C0GBL7hYATojxZpy//+jaZAQ==","signature_status":"signed_v1","signed_at":"2026-07-04T15:25:44.491068Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0603131","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:472745942d3bde73f8bdbe7b109984f10cdf1a3d831c44b0b1fc57882df78736","sha256:8fd53933737f899dec58adb8b688cc8f7651c8b4f5b71a744d98ff15d9bfc2dc"],"state_sha256":"91f9904995da2b87d262b02213c5446f86aa80dad1cce8e0255b07764a6667fa"}