{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:IHTERVXSRTDXHMI5LEMFREMLG4","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":"5cbe87c23894380a130e64d00325c9aa0139d8a351ce748205062c9d988eeb4e","cross_cats_sorted":["astro-ph.CO","physics.ins-det"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2018-03-14T12:15:26Z","title_canon_sha256":"9cd03dfd099352a07aa6ecfd1239b1b5ef509260f2bcd6c5376d8ea393dccf72"},"schema_version":"1.0","source":{"id":"1803.05228","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.05228","created_at":"2026-05-18T00:21:01Z"},{"alias_kind":"arxiv_version","alias_value":"1803.05228v1","created_at":"2026-05-18T00:21:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.05228","created_at":"2026-05-18T00:21:01Z"},{"alias_kind":"pith_short_12","alias_value":"IHTERVXSRTDX","created_at":"2026-05-18T12:32:31Z"},{"alias_kind":"pith_short_16","alias_value":"IHTERVXSRTDXHMI5","created_at":"2026-05-18T12:32:31Z"},{"alias_kind":"pith_short_8","alias_value":"IHTERVXS","created_at":"2026-05-18T12:32:31Z"}],"graph_snapshots":[{"event_id":"sha256:b9ad196bc9643c9c265376a602dc6a04a5dc12dace62b6a2e079c7082f4643f1","target":"graph","created_at":"2026-05-18T00:21:01Z","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":"The next generation of experiments for the measurement of the Cosmic Microwave Background (CMB) requires more and more the use of advanced materials, with specific physical and structural properties. An example is the material used for receiver's cryostat windows and internal lenses. The large throughput of current CMB experiments requires a large diameter (of the order of 0.5m) of these parts, resulting in heavy structural and optical requirements on the material to be used. Ultra High Molecular Weight (UHMW) polyethylene (PE) features high resistance to traction and good transmissivity in th","authors_text":"A. Coppolecchia, A. Paiella, G. D'Alessandro, I. Colantoni, L. Lamagna, M.G. Castellano, P. De Bernardis, S. Masi","cross_cats":["astro-ph.CO","physics.ins-det"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2018-03-14T12:15:26Z","title":"Ultra High Molecular Weight Polyethylene: optical features at millimeter wavelengths"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.05228","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":"sha256:5f34b8c0b6738ae7fa5c1f47b763ac10faa64bcdf888993ae8d414a0f87d14cf","target":"record","created_at":"2026-05-18T00:21:01Z","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":"5cbe87c23894380a130e64d00325c9aa0139d8a351ce748205062c9d988eeb4e","cross_cats_sorted":["astro-ph.CO","physics.ins-det"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2018-03-14T12:15:26Z","title_canon_sha256":"9cd03dfd099352a07aa6ecfd1239b1b5ef509260f2bcd6c5376d8ea393dccf72"},"schema_version":"1.0","source":{"id":"1803.05228","kind":"arxiv","version":1}},"canonical_sha256":"41e648d6f28cc773b11d591858918b37305101325a9b7721db86124ef82e10a6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"41e648d6f28cc773b11d591858918b37305101325a9b7721db86124ef82e10a6","first_computed_at":"2026-05-18T00:21:01.811425Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:21:01.811425Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"oEGCwMmys0pRHIs55fru9t95T5gs1HpLE51IaPyJmdo5VhYEprpKmpPdTP32fGwyEKX42owP8pfaA3OJvNmjBw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:21:01.811809Z","signed_message":"canonical_sha256_bytes"},"source_id":"1803.05228","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5f34b8c0b6738ae7fa5c1f47b763ac10faa64bcdf888993ae8d414a0f87d14cf","sha256:b9ad196bc9643c9c265376a602dc6a04a5dc12dace62b6a2e079c7082f4643f1"],"state_sha256":"4fd080c5fb594efcee805b81d4653b54ed01047fe5c8e99e7927a101753b0b36"}