{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:HAV7A7ULBX6AP5JIYDTUS25EXG","short_pith_number":"pith:HAV7A7UL","canonical_record":{"source":{"id":"2605.15676","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CL","submitted_at":"2026-05-15T06:56:05Z","cross_cats_sorted":[],"title_canon_sha256":"c0d0596910b42bc6160ee4b85fd341988b3d46ee29742f17b912abf7a7187c04","abstract_canon_sha256":"78a7d651b2c55787270164595f84b37a81066c748710b95b3d394c4067dc78e3"},"schema_version":"1.0"},"canonical_sha256":"382bf07e8b0dfc07f528c0e7496ba4b99690c7369e9cf4a1f3d8653d6b225667","source":{"kind":"arxiv","id":"2605.15676","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.15676","created_at":"2026-05-20T00:01:11Z"},{"alias_kind":"arxiv_version","alias_value":"2605.15676v1","created_at":"2026-05-20T00:01:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.15676","created_at":"2026-05-20T00:01:11Z"},{"alias_kind":"pith_short_12","alias_value":"HAV7A7ULBX6A","created_at":"2026-05-20T00:01:11Z"},{"alias_kind":"pith_short_16","alias_value":"HAV7A7ULBX6AP5JI","created_at":"2026-05-20T00:01:11Z"},{"alias_kind":"pith_short_8","alias_value":"HAV7A7UL","created_at":"2026-05-20T00:01:11Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:HAV7A7ULBX6AP5JIYDTUS25EXG","target":"record","payload":{"canonical_record":{"source":{"id":"2605.15676","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CL","submitted_at":"2026-05-15T06:56:05Z","cross_cats_sorted":[],"title_canon_sha256":"c0d0596910b42bc6160ee4b85fd341988b3d46ee29742f17b912abf7a7187c04","abstract_canon_sha256":"78a7d651b2c55787270164595f84b37a81066c748710b95b3d394c4067dc78e3"},"schema_version":"1.0"},"canonical_sha256":"382bf07e8b0dfc07f528c0e7496ba4b99690c7369e9cf4a1f3d8653d6b225667","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-20T00:01:11.825200Z","signature_b64":"S/eOglV5MeoqiUl+vXyxwzvQjTEGnhvEX7Paa74ICCuV121hV5fIxA/jXjF/SzyXJm/F61Srk3AeOy8OOPF5Aw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"382bf07e8b0dfc07f528c0e7496ba4b99690c7369e9cf4a1f3d8653d6b225667","last_reissued_at":"2026-05-20T00:01:11.824450Z","signature_status":"signed_v1","first_computed_at":"2026-05-20T00:01:11.824450Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2605.15676","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":"2026-05-20T00:01:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WBWNTKUYXecOYbCy4WMgwGh3NqzMAK5+E9qTirxLBvFzKTq4J+qjd7sfFIJ2eRtTlyljq/bMfabNzujidzgGAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T21:38:27.571855Z"},"content_sha256":"5044a8572af27f530f2b37830037557bbdeb0284fb4bcb5480609e2de85e2bd5","schema_version":"1.0","event_id":"sha256:5044a8572af27f530f2b37830037557bbdeb0284fb4bcb5480609e2de85e2bd5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:HAV7A7ULBX6AP5JIYDTUS25EXG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Dynamic Chunking for Diffusion Language Models","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"cs.CL","authors_text":"Debing Zhang, James Kwok, Peng Zhao, Weiyu Chen, Xiaoming Shi, Yichen Zhu","submitted_at":"2026-05-15T06:56:05Z","abstract_excerpt":"Block discrete diffusion language models factorize a sequence autoregressively over fixed-size positional blocks, decoupling within-block parallel denoising from across-block conditioning. We argue that this rigid partition wastes structure already present in the sequence: blocks defined by position rather than by content separate semantically coherent tokens and group unrelated ones together. We introduce the \\textbf{D}ynamic \\textbf{C}hunking \\textbf{D}iffusion \\textbf{M}odel (DCDM), which replaces positional blocks with content-defined semantic chunks. At its core is Chunking Attention, a d"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.15676","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/2605.15676/integrity.json","findings":[],"available":true,"detectors_run":[{"name":"ai_meta_artifact","ran_at":"2026-05-19T19:33:29.861251Z","status":"skipped","version":"1.0.0","findings_count":0},{"name":"claim_evidence","ran_at":"2026-05-19T17:21:56.058111Z","status":"completed","version":"1.0.0","findings_count":0}],"snapshot_sha256":"a6d4471d849b7566ab32a468b199c3cc80d11ab956f9abacf940ce64f641541a"},"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":"2026-05-20T00:01:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HgXksEMb/KbeTZNZSoeLTa8gbzwm/JS+J1Zc7FmEU253xCMu0WE2VVWxckMy+TgghEHwgAeFqE/bjM+APHj/Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T21:38:27.572271Z"},"content_sha256":"ce0b131d70c0c670bfafc1d298104dc06fd2722283ee28a76e3529e03d9f95eb","schema_version":"1.0","event_id":"sha256:ce0b131d70c0c670bfafc1d298104dc06fd2722283ee28a76e3529e03d9f95eb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HAV7A7ULBX6AP5JIYDTUS25EXG/bundle.json","state_url":"https://pith.science/pith/HAV7A7ULBX6AP5JIYDTUS25EXG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HAV7A7ULBX6AP5JIYDTUS25EXG/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":"2026-05-21T21:38:27Z","links":{"resolver":"https://pith.science/pith/HAV7A7ULBX6AP5JIYDTUS25EXG","bundle":"https://pith.science/pith/HAV7A7ULBX6AP5JIYDTUS25EXG/bundle.json","state":"https://pith.science/pith/HAV7A7ULBX6AP5JIYDTUS25EXG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HAV7A7ULBX6AP5JIYDTUS25EXG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:HAV7A7ULBX6AP5JIYDTUS25EXG","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":"78a7d651b2c55787270164595f84b37a81066c748710b95b3d394c4067dc78e3","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CL","submitted_at":"2026-05-15T06:56:05Z","title_canon_sha256":"c0d0596910b42bc6160ee4b85fd341988b3d46ee29742f17b912abf7a7187c04"},"schema_version":"1.0","source":{"id":"2605.15676","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.15676","created_at":"2026-05-20T00:01:11Z"},{"alias_kind":"arxiv_version","alias_value":"2605.15676v1","created_at":"2026-05-20T00:01:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.15676","created_at":"2026-05-20T00:01:11Z"},{"alias_kind":"pith_short_12","alias_value":"HAV7A7ULBX6A","created_at":"2026-05-20T00:01:11Z"},{"alias_kind":"pith_short_16","alias_value":"HAV7A7ULBX6AP5JI","created_at":"2026-05-20T00:01:11Z"},{"alias_kind":"pith_short_8","alias_value":"HAV7A7UL","created_at":"2026-05-20T00:01:11Z"}],"graph_snapshots":[{"event_id":"sha256:ce0b131d70c0c670bfafc1d298104dc06fd2722283ee28a76e3529e03d9f95eb","target":"graph","created_at":"2026-05-20T00:01:11Z","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":[{"findings_count":0,"name":"ai_meta_artifact","ran_at":"2026-05-19T19:33:29.861251Z","status":"skipped","version":"1.0.0"},{"findings_count":0,"name":"claim_evidence","ran_at":"2026-05-19T17:21:56.058111Z","status":"completed","version":"1.0.0"}],"endpoint":"/pith/2605.15676/integrity.json","findings":[],"snapshot_sha256":"a6d4471d849b7566ab32a468b199c3cc80d11ab956f9abacf940ce64f641541a","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Block discrete diffusion language models factorize a sequence autoregressively over fixed-size positional blocks, decoupling within-block parallel denoising from across-block conditioning. We argue that this rigid partition wastes structure already present in the sequence: blocks defined by position rather than by content separate semantically coherent tokens and group unrelated ones together. We introduce the \\textbf{D}ynamic \\textbf{C}hunking \\textbf{D}iffusion \\textbf{M}odel (DCDM), which replaces positional blocks with content-defined semantic chunks. At its core is Chunking Attention, a d","authors_text":"Debing Zhang, James Kwok, Peng Zhao, Weiyu Chen, Xiaoming Shi, Yichen Zhu","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CL","submitted_at":"2026-05-15T06:56:05Z","title":"Dynamic Chunking for Diffusion Language Models"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.15676","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":"sha256:5044a8572af27f530f2b37830037557bbdeb0284fb4bcb5480609e2de85e2bd5","target":"record","created_at":"2026-05-20T00:01:11Z","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":"78a7d651b2c55787270164595f84b37a81066c748710b95b3d394c4067dc78e3","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CL","submitted_at":"2026-05-15T06:56:05Z","title_canon_sha256":"c0d0596910b42bc6160ee4b85fd341988b3d46ee29742f17b912abf7a7187c04"},"schema_version":"1.0","source":{"id":"2605.15676","kind":"arxiv","version":1}},"canonical_sha256":"382bf07e8b0dfc07f528c0e7496ba4b99690c7369e9cf4a1f3d8653d6b225667","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"382bf07e8b0dfc07f528c0e7496ba4b99690c7369e9cf4a1f3d8653d6b225667","first_computed_at":"2026-05-20T00:01:11.824450Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-20T00:01:11.824450Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"S/eOglV5MeoqiUl+vXyxwzvQjTEGnhvEX7Paa74ICCuV121hV5fIxA/jXjF/SzyXJm/F61Srk3AeOy8OOPF5Aw==","signature_status":"signed_v1","signed_at":"2026-05-20T00:01:11.825200Z","signed_message":"canonical_sha256_bytes"},"source_id":"2605.15676","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5044a8572af27f530f2b37830037557bbdeb0284fb4bcb5480609e2de85e2bd5","sha256:ce0b131d70c0c670bfafc1d298104dc06fd2722283ee28a76e3529e03d9f95eb"],"state_sha256":"243c1a926c67e089ef083ebea7022bf2f0dff612aa2db7624037ab80ffdc5527"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RwDfIBsl4IUhMg/Ydl3fx0jcENAiGUs0PZbAA0LzBFo3mHhN6D6EGbzB1y+G7q2jstahP0iERVY8qMbVWUlcAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-21T21:38:27.574694Z","bundle_sha256":"8e167a017f9109e7570568c9fb1d2ae729ad9cd12484b40caf91d6aea1b24ff8"}}