{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:GVRY4PLS34X7PXGVM3BDP4SZD4","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":"3c2d26acea94e37b01d8942ec0f8a89c3f3c80da6bc54a1b6612f67f821bd915","cross_cats_sorted":["cs.CR","cs.LG"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2019-07-15T18:17:13Z","title_canon_sha256":"391860a1042635ebe9491cb53b3154f49ef84b3165e49fc7a79f3b49b53de9a5"},"schema_version":"1.0","source":{"id":"1907.06679","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.06679","created_at":"2026-07-04T23:50:21Z"},{"alias_kind":"arxiv_version","alias_value":"1907.06679v2","created_at":"2026-07-04T23:50:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.06679","created_at":"2026-07-04T23:50:21Z"},{"alias_kind":"pith_short_12","alias_value":"GVRY4PLS34X7","created_at":"2026-07-04T23:50:21Z"},{"alias_kind":"pith_short_16","alias_value":"GVRY4PLS34X7PXGV","created_at":"2026-07-04T23:50:21Z"},{"alias_kind":"pith_short_8","alias_value":"GVRY4PLS","created_at":"2026-07-04T23:50:21Z"}],"graph_snapshots":[{"event_id":"sha256:163e028a824e63facbcf02dcbf6143bb153d87e9e15be7af295bc28f2253aafb","target":"graph","created_at":"2026-07-04T23:50:21Z","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/1907.06679/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We show that the imperceptibility of several existing linguistic steganographic systems (Fang et al., 2017; Yang et al., 2018) relies on implicit assumptions on statistical behaviors of fluent text. We formally analyze them and empirically evaluate these assumptions. Furthermore, based on these observations, we propose an encoding algorithm called patient-Huffman with improved near-imperceptible guarantees.","authors_text":"Falcon Z. Dai, Zheng Cai","cross_cats":["cs.CR","cs.LG"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2019-07-15T18:17:13Z","title":"Towards Near-imperceptible Steganographic Text"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.06679","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":"sha256:9b30c6056d99e83c05187d41ffdeb3f03e363faa5877355eed888b382e21b3a9","target":"record","created_at":"2026-07-04T23:50:21Z","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":"3c2d26acea94e37b01d8942ec0f8a89c3f3c80da6bc54a1b6612f67f821bd915","cross_cats_sorted":["cs.CR","cs.LG"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CL","submitted_at":"2019-07-15T18:17:13Z","title_canon_sha256":"391860a1042635ebe9491cb53b3154f49ef84b3165e49fc7a79f3b49b53de9a5"},"schema_version":"1.0","source":{"id":"1907.06679","kind":"arxiv","version":2}},"canonical_sha256":"35638e3d72df2ff7dcd566c237f2591f0b13e043a3a69c4cfea60772da7e27dd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"35638e3d72df2ff7dcd566c237f2591f0b13e043a3a69c4cfea60772da7e27dd","first_computed_at":"2026-07-04T23:50:21.026521Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T23:50:21.026521Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"DCPUXQSj0sc50zDAcOTW9xhzQK1ffirtx8RQ3KVjL1vugA+HCU2iCfna2YBQz+dzm+YbZCpFE049BW1Ez4FFDw==","signature_status":"signed_v1","signed_at":"2026-07-04T23:50:21.026873Z","signed_message":"canonical_sha256_bytes"},"source_id":"1907.06679","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9b30c6056d99e83c05187d41ffdeb3f03e363faa5877355eed888b382e21b3a9","sha256:163e028a824e63facbcf02dcbf6143bb153d87e9e15be7af295bc28f2253aafb"],"state_sha256":"d6dae40b377e7cff583ae13413f6bd88bd2900445d88ba2373d04b6e88946914"}