{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:6TJNETSGWZZQAY7GBPZVQNE4ZO","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":"21a8fbf3ee7e0ba8427f2cad98be888d7b390c54ac3450d0da4b0046e2d115e3","cross_cats_sorted":["nucl-ex","physics.med-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2019-08-14T16:16:06Z","title_canon_sha256":"dbc7f9e7e651fcc420d474e1fddb2bbff2bf33616e02a4a671dd87c6d2584038"},"schema_version":"1.0","source":{"id":"1908.05197","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.05197","created_at":"2026-07-04T23:56:37Z"},{"alias_kind":"arxiv_version","alias_value":"1908.05197v1","created_at":"2026-07-04T23:56:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.05197","created_at":"2026-07-04T23:56:37Z"},{"alias_kind":"pith_short_12","alias_value":"6TJNETSGWZZQ","created_at":"2026-07-04T23:56:37Z"},{"alias_kind":"pith_short_16","alias_value":"6TJNETSGWZZQAY7G","created_at":"2026-07-04T23:56:37Z"},{"alias_kind":"pith_short_8","alias_value":"6TJNETSG","created_at":"2026-07-04T23:56:37Z"}],"graph_snapshots":[{"event_id":"sha256:45321cc02f533efd90cf12b33278530dd814a3ccee98e933450372f156921404","target":"graph","created_at":"2026-07-04T23:56:37Z","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/1908.05197/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The formulation of a low temperature thermoplastic mouldable radiation shielding composite is given. The material is based on a low temperature melting polymer filled with lead shot. It can be easily moulded to shape after immersing in hot water, or by using a hot air gun. When cooled it is a rigid self supporting mass. Alternative formulations to provide low background or low toxicity gamma shielding or neutron shielding are also considered.","authors_text":"John McMillan","cross_cats":["nucl-ex","physics.med-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2019-08-14T16:16:06Z","title":"Radiation shielding composites using thermoplastic polymers mouldable at low temperature"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.05197","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":"sha256:9061f153938894a9c65f2c743f44e38bba9dc4e32c404bc6da9a8c902ce08bab","target":"record","created_at":"2026-07-04T23:56:37Z","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":"21a8fbf3ee7e0ba8427f2cad98be888d7b390c54ac3450d0da4b0046e2d115e3","cross_cats_sorted":["nucl-ex","physics.med-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2019-08-14T16:16:06Z","title_canon_sha256":"dbc7f9e7e651fcc420d474e1fddb2bbff2bf33616e02a4a671dd87c6d2584038"},"schema_version":"1.0","source":{"id":"1908.05197","kind":"arxiv","version":1}},"canonical_sha256":"f4d2d24e46b6730063e60bf358349ccba522f8f305b3028a8a7ab75afdf24355","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f4d2d24e46b6730063e60bf358349ccba522f8f305b3028a8a7ab75afdf24355","first_computed_at":"2026-07-04T23:56:37.339165Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T23:56:37.339165Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"dDyh/1FKlsqp6ujU6nD195Vhoo8UgwYGB2N3qtscxZuuGv8xiuvp2yNw9Q4rLzDIe14ZYf+euH8jsXonHVlCDg==","signature_status":"signed_v1","signed_at":"2026-07-04T23:56:37.339727Z","signed_message":"canonical_sha256_bytes"},"source_id":"1908.05197","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9061f153938894a9c65f2c743f44e38bba9dc4e32c404bc6da9a8c902ce08bab","sha256:45321cc02f533efd90cf12b33278530dd814a3ccee98e933450372f156921404"],"state_sha256":"c0af603bc4bd65a18cf3d9f93b3d8685a3621d5d4c19c5efff053cd3a664f337"}