{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:ILF7BNJSFSMKBUQIOLBZHV6XCB","short_pith_number":"pith:ILF7BNJS","canonical_record":{"source":{"id":"2606.08327","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CL","submitted_at":"2026-06-06T20:38:42Z","cross_cats_sorted":["cs.AI","cs.LG"],"title_canon_sha256":"1ae0b29624a50fecbff50214cbf1dac0ff2f8f9492955f571cb15a85e5280fb1","abstract_canon_sha256":"b2fa04f2205cba86eb9681723f85f07799dd19c572ee099b822ef86619010ce3"},"schema_version":"1.0"},"canonical_sha256":"42cbf0b5322c98a0d20872c393d7d7105601cd90ace551eafc766b700616633a","source":{"kind":"arxiv","id":"2606.08327","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.08327","created_at":"2026-06-09T01:05:33Z"},{"alias_kind":"arxiv_version","alias_value":"2606.08327v1","created_at":"2026-06-09T01:05:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.08327","created_at":"2026-06-09T01:05:33Z"},{"alias_kind":"pith_short_12","alias_value":"ILF7BNJSFSMK","created_at":"2026-06-09T01:05:33Z"},{"alias_kind":"pith_short_16","alias_value":"ILF7BNJSFSMKBUQI","created_at":"2026-06-09T01:05:33Z"},{"alias_kind":"pith_short_8","alias_value":"ILF7BNJS","created_at":"2026-06-09T01:05:33Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:ILF7BNJSFSMKBUQIOLBZHV6XCB","target":"record","payload":{"canonical_record":{"source":{"id":"2606.08327","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CL","submitted_at":"2026-06-06T20:38:42Z","cross_cats_sorted":["cs.AI","cs.LG"],"title_canon_sha256":"1ae0b29624a50fecbff50214cbf1dac0ff2f8f9492955f571cb15a85e5280fb1","abstract_canon_sha256":"b2fa04f2205cba86eb9681723f85f07799dd19c572ee099b822ef86619010ce3"},"schema_version":"1.0"},"canonical_sha256":"42cbf0b5322c98a0d20872c393d7d7105601cd90ace551eafc766b700616633a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-09T01:05:33.684139Z","signature_b64":"decZmz5NA5duXSPJyNPu5yCJ9lYDFcy7ih7sKiRP4/1F6VKw77Ulfc9OCuwHCbeva4kY0yH0i1pH+6mWKsa0AQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"42cbf0b5322c98a0d20872c393d7d7105601cd90ace551eafc766b700616633a","last_reissued_at":"2026-06-09T01:05:33.683721Z","signature_status":"signed_v1","first_computed_at":"2026-06-09T01:05:33.683721Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2606.08327","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-06-09T01:05:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lGr2MgJuao4vpA2eRA7tXfyB7r7QEsgSJCgMTHtgJFWrAL/gh/PPEGIFeYcgH3dkp/oOx6ydWCZuN/nSSVbHBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-03T17:01:09.355280Z"},"content_sha256":"27e6e15079499cc0de430b9ae9b190ea2bade0ff22a2a6c2a2c9a23ae21d172c","schema_version":"1.0","event_id":"sha256:27e6e15079499cc0de430b9ae9b190ea2bade0ff22a2a6c2a2c9a23ae21d172c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:ILF7BNJSFSMKBUQIOLBZHV6XCB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Chiaroscuro Attention: Spending Compute in the Dark","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cs.AI","cs.LG"],"primary_cat":"cs.CL","authors_text":"Prateek Kumar Sikdar","submitted_at":"2026-06-06T20:38:42Z","abstract_excerpt":"Standard transformers apply self-attention uniformly at every layer and token, regardless of whether the input requires dynamic cross-token interaction. We propose CHIAR-Former (Chiaroscuro Attention), a 4-layer hybrid transformer that routes each token to one of three operators - DCT spectral mixing, RBF kernel mixing, or full self-attention - based on per-token spectral entropy, a theoretically justified complexity signal. Through systematic ablation on WikiText-103, we discover routing collapse: the router consistently rejects RBF in favour of DCT and attention, revealing that spectral mixi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.08327","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2606.08327/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-06-09T01:05:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"I8BVx4JdfTc/aZlrQI2a1HOLGN75iNdo6qR+7JPc7wnIga4+ev4i3OsEFwCLuRtH9TAIRY+sLZVeYo7flKhrBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-03T17:01:09.355688Z"},"content_sha256":"465ace66feebe6d66a0112d7ca9ffdd289c687a885e730b9505f548548ada19c","schema_version":"1.0","event_id":"sha256:465ace66feebe6d66a0112d7ca9ffdd289c687a885e730b9505f548548ada19c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ILF7BNJSFSMKBUQIOLBZHV6XCB/bundle.json","state_url":"https://pith.science/pith/ILF7BNJSFSMKBUQIOLBZHV6XCB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ILF7BNJSFSMKBUQIOLBZHV6XCB/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-07-03T17:01:09Z","links":{"resolver":"https://pith.science/pith/ILF7BNJSFSMKBUQIOLBZHV6XCB","bundle":"https://pith.science/pith/ILF7BNJSFSMKBUQIOLBZHV6XCB/bundle.json","state":"https://pith.science/pith/ILF7BNJSFSMKBUQIOLBZHV6XCB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ILF7BNJSFSMKBUQIOLBZHV6XCB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:ILF7BNJSFSMKBUQIOLBZHV6XCB","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":"b2fa04f2205cba86eb9681723f85f07799dd19c572ee099b822ef86619010ce3","cross_cats_sorted":["cs.AI","cs.LG"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CL","submitted_at":"2026-06-06T20:38:42Z","title_canon_sha256":"1ae0b29624a50fecbff50214cbf1dac0ff2f8f9492955f571cb15a85e5280fb1"},"schema_version":"1.0","source":{"id":"2606.08327","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.08327","created_at":"2026-06-09T01:05:33Z"},{"alias_kind":"arxiv_version","alias_value":"2606.08327v1","created_at":"2026-06-09T01:05:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.08327","created_at":"2026-06-09T01:05:33Z"},{"alias_kind":"pith_short_12","alias_value":"ILF7BNJSFSMK","created_at":"2026-06-09T01:05:33Z"},{"alias_kind":"pith_short_16","alias_value":"ILF7BNJSFSMKBUQI","created_at":"2026-06-09T01:05:33Z"},{"alias_kind":"pith_short_8","alias_value":"ILF7BNJS","created_at":"2026-06-09T01:05:33Z"}],"graph_snapshots":[{"event_id":"sha256:465ace66feebe6d66a0112d7ca9ffdd289c687a885e730b9505f548548ada19c","target":"graph","created_at":"2026-06-09T01:05:33Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2606.08327/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Standard transformers apply self-attention uniformly at every layer and token, regardless of whether the input requires dynamic cross-token interaction. We propose CHIAR-Former (Chiaroscuro Attention), a 4-layer hybrid transformer that routes each token to one of three operators - DCT spectral mixing, RBF kernel mixing, or full self-attention - based on per-token spectral entropy, a theoretically justified complexity signal. Through systematic ablation on WikiText-103, we discover routing collapse: the router consistently rejects RBF in favour of DCT and attention, revealing that spectral mixi","authors_text":"Prateek Kumar Sikdar","cross_cats":["cs.AI","cs.LG"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CL","submitted_at":"2026-06-06T20:38:42Z","title":"Chiaroscuro Attention: Spending Compute in the Dark"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.08327","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":"sha256:27e6e15079499cc0de430b9ae9b190ea2bade0ff22a2a6c2a2c9a23ae21d172c","target":"record","created_at":"2026-06-09T01:05:33Z","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":"b2fa04f2205cba86eb9681723f85f07799dd19c572ee099b822ef86619010ce3","cross_cats_sorted":["cs.AI","cs.LG"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CL","submitted_at":"2026-06-06T20:38:42Z","title_canon_sha256":"1ae0b29624a50fecbff50214cbf1dac0ff2f8f9492955f571cb15a85e5280fb1"},"schema_version":"1.0","source":{"id":"2606.08327","kind":"arxiv","version":1}},"canonical_sha256":"42cbf0b5322c98a0d20872c393d7d7105601cd90ace551eafc766b700616633a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"42cbf0b5322c98a0d20872c393d7d7105601cd90ace551eafc766b700616633a","first_computed_at":"2026-06-09T01:05:33.683721Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-09T01:05:33.683721Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"decZmz5NA5duXSPJyNPu5yCJ9lYDFcy7ih7sKiRP4/1F6VKw77Ulfc9OCuwHCbeva4kY0yH0i1pH+6mWKsa0AQ==","signature_status":"signed_v1","signed_at":"2026-06-09T01:05:33.684139Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.08327","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:27e6e15079499cc0de430b9ae9b190ea2bade0ff22a2a6c2a2c9a23ae21d172c","sha256:465ace66feebe6d66a0112d7ca9ffdd289c687a885e730b9505f548548ada19c"],"state_sha256":"8cfedc594fa1b8a6acd4cbf83ada540d45b592dc0ce2fcce24ef696ae87bff40"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cP/t9PiG2feiB+KZmnDsW6zv7MZDCmUEEj8xoA+ynIR4GWDH2OXVJtw95b6mSJyJhLcLsM6fdwPNDCjR7BuJBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-03T17:01:09.357784Z","bundle_sha256":"ca5e641c0e562c59b8bf78bbab78ac0d1eeda7fe757261d3cfe3533b7d447a28"}}