{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:R7AAJHWHLBMR4VGJ7Z7UDPKALJ","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":"839706e95f82820b263d65f4c6283b4cf0abfc0efff265a30fb6d77bb3cc9cdf","cross_cats_sorted":["astro-ph.GA","cs.CV"],"license":"http://creativecommons.org/licenses/by-sa/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-09-24T23:42:19Z","title_canon_sha256":"2154d0a654641f00d1cbd2de574baca9831d5a53d1423c116b318e9e82912963"},"schema_version":"1.0","source":{"id":"1909.11230","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1909.11230","created_at":"2026-07-05T04:21:00Z"},{"alias_kind":"arxiv_version","alias_value":"1909.11230v2","created_at":"2026-07-05T04:21:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1909.11230","created_at":"2026-07-05T04:21:00Z"},{"alias_kind":"pith_short_12","alias_value":"R7AAJHWHLBMR","created_at":"2026-07-05T04:21:00Z"},{"alias_kind":"pith_short_16","alias_value":"R7AAJHWHLBMR4VGJ","created_at":"2026-07-05T04:21:00Z"},{"alias_kind":"pith_short_8","alias_value":"R7AAJHWH","created_at":"2026-07-05T04:21:00Z"}],"graph_snapshots":[{"event_id":"sha256:ee63f0cebe54374bad604ed0d02d58934fc724831bce0c82d095e4051e81d606","target":"graph","created_at":"2026-07-05T04:21:00Z","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/1909.11230/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"NoiseChisel is a program to detect very low signal-to-noise ratio (S/N) features with minimal assumptions on their morphology. It was introduced in 2015 and released within a collection of data analysis programs and libraries known as GNU Astronomy Utilities (Gnuastro). The 10th stable version of Gnuastro was released in August 2019 and NoiseChisel has significantly improved: detecting even fainter signal, enabling better user control over its inner workings, and many bug fixes. The most important change until version 0.10 is that NoiseChisel's segmentation features have been moved into a new ","authors_text":"Mohammad Akhlaghi","cross_cats":["astro-ph.GA","cs.CV"],"headline":"","license":"http://creativecommons.org/licenses/by-sa/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-09-24T23:42:19Z","title":"Carving out the low surface brightness universe with NoiseChisel"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1909.11230","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:d18422742c902f0217916282a29de7af50bf72b1ea6a8c4368a10de58d0aa5ba","target":"record","created_at":"2026-07-05T04:21:00Z","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":"839706e95f82820b263d65f4c6283b4cf0abfc0efff265a30fb6d77bb3cc9cdf","cross_cats_sorted":["astro-ph.GA","cs.CV"],"license":"http://creativecommons.org/licenses/by-sa/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-09-24T23:42:19Z","title_canon_sha256":"2154d0a654641f00d1cbd2de574baca9831d5a53d1423c116b318e9e82912963"},"schema_version":"1.0","source":{"id":"1909.11230","kind":"arxiv","version":2}},"canonical_sha256":"8fc0049ec758591e54c9fe7f41bd405a43e203d1efa39b2cf87fa33fb57f937f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8fc0049ec758591e54c9fe7f41bd405a43e203d1efa39b2cf87fa33fb57f937f","first_computed_at":"2026-07-05T04:21:00.499003Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:21:00.499003Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"e/tGxeR1Z4pkOQqugtaDoxIqFIUkliRTog0bMUyRpJw+SQ94LC3IMpeyxW15ULhqwbs1g3j2x96T0tGflDrfAw==","signature_status":"signed_v1","signed_at":"2026-07-05T04:21:00.499375Z","signed_message":"canonical_sha256_bytes"},"source_id":"1909.11230","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d18422742c902f0217916282a29de7af50bf72b1ea6a8c4368a10de58d0aa5ba","sha256:ee63f0cebe54374bad604ed0d02d58934fc724831bce0c82d095e4051e81d606"],"state_sha256":"2f12f3c0da72ec9c29b35adece3f21f0f354cacaa98fb176e35fac7f3d9b5e8e"}