{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:LAGVQHLMAU67BOA33BFVR2WUFQ","short_pith_number":"pith:LAGVQHLM","canonical_record":{"source":{"id":"1008.0691","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2010-08-04T04:35:06Z","cross_cats_sorted":[],"title_canon_sha256":"6dcde67390b3ac017020603354c73621cdb64753e6150861ac51a1770c80c14f","abstract_canon_sha256":"31a59c6eefee89fb2bf464ad53e4291f53dcb3ab504cb58a076d42f136d40bea"},"schema_version":"1.0"},"canonical_sha256":"580d581d6c053df0b81bd84b58ead42c25903aedfb4e224de4962b504217ca03","source":{"kind":"arxiv","id":"1008.0691","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1008.0691","created_at":"2026-05-18T04:12:33Z"},{"alias_kind":"arxiv_version","alias_value":"1008.0691v1","created_at":"2026-05-18T04:12:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1008.0691","created_at":"2026-05-18T04:12:33Z"},{"alias_kind":"pith_short_12","alias_value":"LAGVQHLMAU67","created_at":"2026-05-18T12:26:10Z"},{"alias_kind":"pith_short_16","alias_value":"LAGVQHLMAU67BOA3","created_at":"2026-05-18T12:26:10Z"},{"alias_kind":"pith_short_8","alias_value":"LAGVQHLM","created_at":"2026-05-18T12:26:10Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:LAGVQHLMAU67BOA33BFVR2WUFQ","target":"record","payload":{"canonical_record":{"source":{"id":"1008.0691","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2010-08-04T04:35:06Z","cross_cats_sorted":[],"title_canon_sha256":"6dcde67390b3ac017020603354c73621cdb64753e6150861ac51a1770c80c14f","abstract_canon_sha256":"31a59c6eefee89fb2bf464ad53e4291f53dcb3ab504cb58a076d42f136d40bea"},"schema_version":"1.0"},"canonical_sha256":"580d581d6c053df0b81bd84b58ead42c25903aedfb4e224de4962b504217ca03","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:12:33.969784Z","signature_b64":"5fHKgHPZ/qsvkISDgkj1T/eBJDX0YckeTmfRKRcEsQvt5womyMRpWegyKyO3N+Tcl30RiMA5Tw88RD5yTAd6DQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"580d581d6c053df0b81bd84b58ead42c25903aedfb4e224de4962b504217ca03","last_reissued_at":"2026-05-18T04:12:33.969158Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:12:33.969158Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1008.0691","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":"2026-05-18T04:12:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bHv70/IO2VptFCAGY9D/LDQpUawFsmv5b2xzO5sCoJCtCHBUkr6UIqn0V002p09bHq2EhI9xahc3QWAB6qC+AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T07:35:29.356416Z"},"content_sha256":"e9b1e90f899809aa4b41da87434683e3861d16afef080682e5f1ebdc452c4dd5","schema_version":"1.0","event_id":"sha256:e9b1e90f899809aa4b41da87434683e3861d16afef080682e5f1ebdc452c4dd5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:LAGVQHLMAU67BOA33BFVR2WUFQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Measurement of 37Ar to support technology for On-site Inspection under the Comprehensive Nuclear-Test-Ban Treaty","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"A. R. Day, A. Seifert, B. J. Hyronimus, C. E. Aalseth, D. A. Haas, E. K. Mace, E. W. Hoppe, J. L. Orrell, M. E. Keillor, V. T. Woods","submitted_at":"2010-08-04T04:35:06Z","abstract_excerpt":"On-Site Inspection (OSI) is a key component of the verification regime for the Comprehensive Nuclear-Test-Ban Treaty (CTBT). Measurements of radionuclide isotopes created by an underground nuclear explosion are a valuable signature of a Treaty violation. Argon-37 is produced from neutron interaction with calcium in soil, 40Ca(n,{\\alpha})37Ar. For OSI, the 35-day half-life of 37Ar provides both high specific activity and sufficient time for completion of an inspection before decay limits sensitivity. This paper presents a low-background internal-source gas proportional counter with an 37Ar meas"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1008.0691","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":"2026-05-18T04:12:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9atQ+f5VKSCyWdbdlXQM5dchdVGpqRIEHYrKVUkGIT4P0rja9g2ntKj2O9EETZKSI11k6tnAM3Bbis66MiANBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T07:35:29.357074Z"},"content_sha256":"0f74068d40be817353af79f251d666405a70f40c3cbf1061534b9e6199ac4d43","schema_version":"1.0","event_id":"sha256:0f74068d40be817353af79f251d666405a70f40c3cbf1061534b9e6199ac4d43"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LAGVQHLMAU67BOA33BFVR2WUFQ/bundle.json","state_url":"https://pith.science/pith/LAGVQHLMAU67BOA33BFVR2WUFQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LAGVQHLMAU67BOA33BFVR2WUFQ/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":"2026-05-26T07:35:29Z","links":{"resolver":"https://pith.science/pith/LAGVQHLMAU67BOA33BFVR2WUFQ","bundle":"https://pith.science/pith/LAGVQHLMAU67BOA33BFVR2WUFQ/bundle.json","state":"https://pith.science/pith/LAGVQHLMAU67BOA33BFVR2WUFQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LAGVQHLMAU67BOA33BFVR2WUFQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:LAGVQHLMAU67BOA33BFVR2WUFQ","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":"31a59c6eefee89fb2bf464ad53e4291f53dcb3ab504cb58a076d42f136d40bea","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2010-08-04T04:35:06Z","title_canon_sha256":"6dcde67390b3ac017020603354c73621cdb64753e6150861ac51a1770c80c14f"},"schema_version":"1.0","source":{"id":"1008.0691","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1008.0691","created_at":"2026-05-18T04:12:33Z"},{"alias_kind":"arxiv_version","alias_value":"1008.0691v1","created_at":"2026-05-18T04:12:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1008.0691","created_at":"2026-05-18T04:12:33Z"},{"alias_kind":"pith_short_12","alias_value":"LAGVQHLMAU67","created_at":"2026-05-18T12:26:10Z"},{"alias_kind":"pith_short_16","alias_value":"LAGVQHLMAU67BOA3","created_at":"2026-05-18T12:26:10Z"},{"alias_kind":"pith_short_8","alias_value":"LAGVQHLM","created_at":"2026-05-18T12:26:10Z"}],"graph_snapshots":[{"event_id":"sha256:0f74068d40be817353af79f251d666405a70f40c3cbf1061534b9e6199ac4d43","target":"graph","created_at":"2026-05-18T04:12:33Z","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":"On-Site Inspection (OSI) is a key component of the verification regime for the Comprehensive Nuclear-Test-Ban Treaty (CTBT). Measurements of radionuclide isotopes created by an underground nuclear explosion are a valuable signature of a Treaty violation. Argon-37 is produced from neutron interaction with calcium in soil, 40Ca(n,{\\alpha})37Ar. For OSI, the 35-day half-life of 37Ar provides both high specific activity and sufficient time for completion of an inspection before decay limits sensitivity. This paper presents a low-background internal-source gas proportional counter with an 37Ar meas","authors_text":"A. R. Day, A. Seifert, B. J. Hyronimus, C. E. Aalseth, D. A. Haas, E. K. Mace, E. W. Hoppe, J. L. Orrell, M. E. Keillor, V. T. Woods","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2010-08-04T04:35:06Z","title":"Measurement of 37Ar to support technology for On-site Inspection under the Comprehensive Nuclear-Test-Ban Treaty"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1008.0691","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:e9b1e90f899809aa4b41da87434683e3861d16afef080682e5f1ebdc452c4dd5","target":"record","created_at":"2026-05-18T04:12:33Z","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":"31a59c6eefee89fb2bf464ad53e4291f53dcb3ab504cb58a076d42f136d40bea","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2010-08-04T04:35:06Z","title_canon_sha256":"6dcde67390b3ac017020603354c73621cdb64753e6150861ac51a1770c80c14f"},"schema_version":"1.0","source":{"id":"1008.0691","kind":"arxiv","version":1}},"canonical_sha256":"580d581d6c053df0b81bd84b58ead42c25903aedfb4e224de4962b504217ca03","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"580d581d6c053df0b81bd84b58ead42c25903aedfb4e224de4962b504217ca03","first_computed_at":"2026-05-18T04:12:33.969158Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:12:33.969158Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"5fHKgHPZ/qsvkISDgkj1T/eBJDX0YckeTmfRKRcEsQvt5womyMRpWegyKyO3N+Tcl30RiMA5Tw88RD5yTAd6DQ==","signature_status":"signed_v1","signed_at":"2026-05-18T04:12:33.969784Z","signed_message":"canonical_sha256_bytes"},"source_id":"1008.0691","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e9b1e90f899809aa4b41da87434683e3861d16afef080682e5f1ebdc452c4dd5","sha256:0f74068d40be817353af79f251d666405a70f40c3cbf1061534b9e6199ac4d43"],"state_sha256":"f9cacca6ccd586fcff4e886221529ff89c78f15d738a7e74dfec49d97b542f36"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZqrLYAqGcIWtn6RoZHjamHCcAsmF6khTXtVuxD4B1LRgjDzjDmshZd1j2WJMnZrVli0KNXlmGA/8e3KQcikZDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T07:35:29.359770Z","bundle_sha256":"e3577e1a079be9954eb68f19d35ceae650b694f7082784be4925bf4ea1acd55d"}}