{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:AX2YPO6SMPFGWPLQSWUA34FZNY","short_pith_number":"pith:AX2YPO6S","canonical_record":{"source":{"id":"2606.03570","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2026-06-02T12:38:58Z","cross_cats_sorted":["math.IT"],"title_canon_sha256":"f0d5477cfa524f31ee6a2fe9fa90ae8cb4dd2d5bf8c08543ca999b7f45d22158","abstract_canon_sha256":"79f9e0c7e9c4860dca5c4dabfb1d77275ba683fa2974010612df0d2177c52307"},"schema_version":"1.0"},"canonical_sha256":"05f587bbd263ca6b3d7095a80df0b96e251b6ab8d8ccd2877cccee9de43ab969","source":{"kind":"arxiv","id":"2606.03570","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.03570","created_at":"2026-06-03T01:06:01Z"},{"alias_kind":"arxiv_version","alias_value":"2606.03570v1","created_at":"2026-06-03T01:06:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.03570","created_at":"2026-06-03T01:06:01Z"},{"alias_kind":"pith_short_12","alias_value":"AX2YPO6SMPFG","created_at":"2026-06-03T01:06:01Z"},{"alias_kind":"pith_short_16","alias_value":"AX2YPO6SMPFGWPLQ","created_at":"2026-06-03T01:06:01Z"},{"alias_kind":"pith_short_8","alias_value":"AX2YPO6S","created_at":"2026-06-03T01:06:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:AX2YPO6SMPFGWPLQSWUA34FZNY","target":"record","payload":{"canonical_record":{"source":{"id":"2606.03570","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2026-06-02T12:38:58Z","cross_cats_sorted":["math.IT"],"title_canon_sha256":"f0d5477cfa524f31ee6a2fe9fa90ae8cb4dd2d5bf8c08543ca999b7f45d22158","abstract_canon_sha256":"79f9e0c7e9c4860dca5c4dabfb1d77275ba683fa2974010612df0d2177c52307"},"schema_version":"1.0"},"canonical_sha256":"05f587bbd263ca6b3d7095a80df0b96e251b6ab8d8ccd2877cccee9de43ab969","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-03T01:06:01.151963Z","signature_b64":"NitHxgtaL1sKQIiL094S9qpuC3CW2lbMr8glrJg7EUOLkNNOyugA2OZyiQh7b57daObuZmV+11eD5TYEiBNMCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"05f587bbd263ca6b3d7095a80df0b96e251b6ab8d8ccd2877cccee9de43ab969","last_reissued_at":"2026-06-03T01:06:01.151553Z","signature_status":"signed_v1","first_computed_at":"2026-06-03T01:06:01.151553Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2606.03570","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":"2026-06-03T01:06:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RlAXPsVCq+2EvxUKvn+RAYfeWi9h+JBOD9O9r6wV3OLq8rm7/DBBG06DdpZgbsvQS5HZ6WA9XYRrkSrsBHmeDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-03T14:30:12.709906Z"},"content_sha256":"469a573158dc58b1584b02f8a0d8395937b33d7d1741679a72a403f16500d257","schema_version":"1.0","event_id":"sha256:469a573158dc58b1584b02f8a0d8395937b33d7d1741679a72a403f16500d257"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:AX2YPO6SMPFGWPLQSWUA34FZNY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"STC: Reversible Digit-Context Decomposition for BWT-Family Text Compression","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.IT"],"primary_cat":"cs.IT","authors_text":"Anling Xiang, Jingyang Du, Yang Shen","submitted_at":"2026-06-02T12:38:58Z","abstract_excerpt":"Burrows-Wheeler-transform-based compressors rely on local context regularity, but structured text also contains dates, counters, identifiers, coordinates, and other digit runs whose values vary differently from their surrounding tokens. STC is a practical BWT-family compressor that separates this source of variation before the component BWT stage. It replaces digit runs in the main stream with an unambiguous placeholder and stores the removed digits in length- and context-conditioned side streams. The side streams use stable bucket ordering and compact digit packing, so the decoder can reconst"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.03570","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/2606.03570/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":"2026-06-03T01:06:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tooGhTYwJscuvrpjHZtlsjAd+1PFG06rLLB888y0ZxvvVPaQfvSuzbLQyVONe/xqS6LBCij/4uQU8x3eddjKBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-03T14:30:12.710271Z"},"content_sha256":"62e2eb1e2ca4108a973be3ccef70e5a81f4ca6ea766919caaf05961a8e1d7d7c","schema_version":"1.0","event_id":"sha256:62e2eb1e2ca4108a973be3ccef70e5a81f4ca6ea766919caaf05961a8e1d7d7c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/AX2YPO6SMPFGWPLQSWUA34FZNY/bundle.json","state_url":"https://pith.science/pith/AX2YPO6SMPFGWPLQSWUA34FZNY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/AX2YPO6SMPFGWPLQSWUA34FZNY/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":"2026-07-03T14:30:12Z","links":{"resolver":"https://pith.science/pith/AX2YPO6SMPFGWPLQSWUA34FZNY","bundle":"https://pith.science/pith/AX2YPO6SMPFGWPLQSWUA34FZNY/bundle.json","state":"https://pith.science/pith/AX2YPO6SMPFGWPLQSWUA34FZNY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/AX2YPO6SMPFGWPLQSWUA34FZNY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:AX2YPO6SMPFGWPLQSWUA34FZNY","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":"79f9e0c7e9c4860dca5c4dabfb1d77275ba683fa2974010612df0d2177c52307","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2026-06-02T12:38:58Z","title_canon_sha256":"f0d5477cfa524f31ee6a2fe9fa90ae8cb4dd2d5bf8c08543ca999b7f45d22158"},"schema_version":"1.0","source":{"id":"2606.03570","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.03570","created_at":"2026-06-03T01:06:01Z"},{"alias_kind":"arxiv_version","alias_value":"2606.03570v1","created_at":"2026-06-03T01:06:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.03570","created_at":"2026-06-03T01:06:01Z"},{"alias_kind":"pith_short_12","alias_value":"AX2YPO6SMPFG","created_at":"2026-06-03T01:06:01Z"},{"alias_kind":"pith_short_16","alias_value":"AX2YPO6SMPFGWPLQ","created_at":"2026-06-03T01:06:01Z"},{"alias_kind":"pith_short_8","alias_value":"AX2YPO6S","created_at":"2026-06-03T01:06:01Z"}],"graph_snapshots":[{"event_id":"sha256:62e2eb1e2ca4108a973be3ccef70e5a81f4ca6ea766919caaf05961a8e1d7d7c","target":"graph","created_at":"2026-06-03T01:06:01Z","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/2606.03570/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Burrows-Wheeler-transform-based compressors rely on local context regularity, but structured text also contains dates, counters, identifiers, coordinates, and other digit runs whose values vary differently from their surrounding tokens. STC is a practical BWT-family compressor that separates this source of variation before the component BWT stage. It replaces digit runs in the main stream with an unambiguous placeholder and stores the removed digits in length- and context-conditioned side streams. The side streams use stable bucket ordering and compact digit packing, so the decoder can reconst","authors_text":"Anling Xiang, Jingyang Du, Yang Shen","cross_cats":["math.IT"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2026-06-02T12:38:58Z","title":"STC: Reversible Digit-Context Decomposition for BWT-Family Text Compression"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.03570","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":"sha256:469a573158dc58b1584b02f8a0d8395937b33d7d1741679a72a403f16500d257","target":"record","created_at":"2026-06-03T01:06:01Z","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":"79f9e0c7e9c4860dca5c4dabfb1d77275ba683fa2974010612df0d2177c52307","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2026-06-02T12:38:58Z","title_canon_sha256":"f0d5477cfa524f31ee6a2fe9fa90ae8cb4dd2d5bf8c08543ca999b7f45d22158"},"schema_version":"1.0","source":{"id":"2606.03570","kind":"arxiv","version":1}},"canonical_sha256":"05f587bbd263ca6b3d7095a80df0b96e251b6ab8d8ccd2877cccee9de43ab969","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"05f587bbd263ca6b3d7095a80df0b96e251b6ab8d8ccd2877cccee9de43ab969","first_computed_at":"2026-06-03T01:06:01.151553Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-03T01:06:01.151553Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"NitHxgtaL1sKQIiL094S9qpuC3CW2lbMr8glrJg7EUOLkNNOyugA2OZyiQh7b57daObuZmV+11eD5TYEiBNMCQ==","signature_status":"signed_v1","signed_at":"2026-06-03T01:06:01.151963Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.03570","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:469a573158dc58b1584b02f8a0d8395937b33d7d1741679a72a403f16500d257","sha256:62e2eb1e2ca4108a973be3ccef70e5a81f4ca6ea766919caaf05961a8e1d7d7c"],"state_sha256":"cae1c6396362ad0e94bcd7bdea5bb0f00bd877206f84a3d1ac9933c3525b1565"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"C+4WtDQWyxWy3fKd27CZd/M9yKA9Iwjd6m+nXLfeNx8FPaPpqEQymf9PifEMjg2qlWio6Ywct2bPA2GYZvSNAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-03T14:30:12.712354Z","bundle_sha256":"31c94244bb415be4c43a705673d3c05e07356d115e13c21c236bb4d2790e5d40"}}