{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:HCT3MB2ZCUC2W4VXC7CGAI45SN","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":"52003ca2a97800e73e8c4b69865631465fb2fd9533d6e8db1ea800d6043cfdcb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2017-12-12T15:53:46Z","title_canon_sha256":"64c93bd09f4df5dff4669555e2158716520a41c99a5dd3689d46cee91469d6a6"},"schema_version":"1.0","source":{"id":"1801.04975","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1801.04975","created_at":"2026-05-18T00:25:33Z"},{"alias_kind":"arxiv_version","alias_value":"1801.04975v2","created_at":"2026-05-18T00:25:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1801.04975","created_at":"2026-05-18T00:25:33Z"},{"alias_kind":"pith_short_12","alias_value":"HCT3MB2ZCUC2","created_at":"2026-05-18T12:31:18Z"},{"alias_kind":"pith_short_16","alias_value":"HCT3MB2ZCUC2W4VX","created_at":"2026-05-18T12:31:18Z"},{"alias_kind":"pith_short_8","alias_value":"HCT3MB2Z","created_at":"2026-05-18T12:31:18Z"}],"graph_snapshots":[{"event_id":"sha256:df7e3b4878727e5d2180827d2cfe0cd676eab94aa53de683199b99626e516f97","target":"graph","created_at":"2026-05-18T00:25:33Z","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":"The Refl1d program is used for modeling and fitting data from neutron and X-ray reflectometry experiments. The model of the (thin-film) samples is typically constructed of discrete layers of different scattering-length densities (SLD). Interlayer roughness is represented as an error-function transition from one layer to the next. Previous versions of the software truncated this error-function at the next interface. This strategy has the advantage of preventing layers with unbounded effective extent, but it can also result in SLD depth profiles that do not conform to the physical expectations o","authors_text":"Aaron Green, Brian B. Maranville, Paul A. Kienzle","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2017-12-12T15:53:46Z","title":"Distributed Error-Function Roughness in Refl1d Reflectometry Fitting Program"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1801.04975","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:a1beedd6c6111f1308c4502ae3522c1b3ff4d2aa11d8511b9cb585c9a5f01a86","target":"record","created_at":"2026-05-18T00:25:33Z","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":"52003ca2a97800e73e8c4b69865631465fb2fd9533d6e8db1ea800d6043cfdcb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2017-12-12T15:53:46Z","title_canon_sha256":"64c93bd09f4df5dff4669555e2158716520a41c99a5dd3689d46cee91469d6a6"},"schema_version":"1.0","source":{"id":"1801.04975","kind":"arxiv","version":2}},"canonical_sha256":"38a7b607591505ab72b717c460239d93405e1fa431af6b861269befabe8b4e07","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"38a7b607591505ab72b717c460239d93405e1fa431af6b861269befabe8b4e07","first_computed_at":"2026-05-18T00:25:33.338346Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:25:33.338346Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"iVPusRrGF12FZbBd4mhIZYhwkBDOt7pcEErVWdRVsrxgMMswB0nH4f9aaIDjr72SL4YzdpEw5pYWRfTAUxtzAw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:25:33.339050Z","signed_message":"canonical_sha256_bytes"},"source_id":"1801.04975","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a1beedd6c6111f1308c4502ae3522c1b3ff4d2aa11d8511b9cb585c9a5f01a86","sha256:df7e3b4878727e5d2180827d2cfe0cd676eab94aa53de683199b99626e516f97"],"state_sha256":"0f8dd56fe1f1b02f112a0fed7c8545f4b2625ac3d80348bb11c6da3616082e77"}