{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:74QJL2QV7KFMTTPXVDNWGRCAD3","short_pith_number":"pith:74QJL2QV","canonical_record":{"source":{"id":"2507.00254","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2025-06-30T20:47:28Z","cross_cats_sorted":["cs.IT","math.IT"],"title_canon_sha256":"9b0fb6e31fe4adcd7af95cfb84369b167eaa90150b82c154a9e43fb967a419b4","abstract_canon_sha256":"b9f6b09000f1794a07112064f017234658ed8643ae4336bee39471db4c3bf85a"},"schema_version":"1.0"},"canonical_sha256":"ff2095ea15fa8ac9cdf7a8db6344401ef5c1d32fe32a0fcba7c2f914ac4a86d0","source":{"kind":"arxiv","id":"2507.00254","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2507.00254","created_at":"2026-07-29T00:24:31Z"},{"alias_kind":"arxiv_version","alias_value":"2507.00254v3","created_at":"2026-07-29T00:24:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2507.00254","created_at":"2026-07-29T00:24:31Z"},{"alias_kind":"pith_short_12","alias_value":"74QJL2QV7KFM","created_at":"2026-07-29T00:24:31Z"},{"alias_kind":"pith_short_16","alias_value":"74QJL2QV7KFMTTPX","created_at":"2026-07-29T00:24:31Z"},{"alias_kind":"pith_short_8","alias_value":"74QJL2QV","created_at":"2026-07-29T00:24:31Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:74QJL2QV7KFMTTPXVDNWGRCAD3","target":"record","payload":{"canonical_record":{"source":{"id":"2507.00254","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2025-06-30T20:47:28Z","cross_cats_sorted":["cs.IT","math.IT"],"title_canon_sha256":"9b0fb6e31fe4adcd7af95cfb84369b167eaa90150b82c154a9e43fb967a419b4","abstract_canon_sha256":"b9f6b09000f1794a07112064f017234658ed8643ae4336bee39471db4c3bf85a"},"schema_version":"1.0"},"canonical_sha256":"ff2095ea15fa8ac9cdf7a8db6344401ef5c1d32fe32a0fcba7c2f914ac4a86d0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-29T00:24:31.841893Z","signature_b64":"Vk+idjV2RZTWm3qQJmhEALDf3yYePq1Jl5IRbS22M3UAUrSq2OpiCGbeWqyCxsyELqb8D+fwR30LN17JYVltDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ff2095ea15fa8ac9cdf7a8db6344401ef5c1d32fe32a0fcba7c2f914ac4a86d0","last_reissued_at":"2026-07-29T00:24:31.840932Z","signature_status":"signed_v1","first_computed_at":"2026-07-29T00:24:31.840932Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2507.00254","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-29T00:24:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ThW4oGOXhZ4ISuemy3shbyHVlPBZMxMZByCVJPgnCef9tCBipLp+PvJrdZnGT8nOGtQGOY4jCdmbCq7n89d9Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T16:44:16.136254Z"},"content_sha256":"d204329d3f4c24712a642dcf36d23e43b7dba6d8ebb2374b93f14cb9fa7f2734","schema_version":"1.0","event_id":"sha256:d204329d3f4c24712a642dcf36d23e43b7dba6d8ebb2374b93f14cb9fa7f2734"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:74QJL2QV7KFMTTPXVDNWGRCAD3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Fully Parallelized BP Decoding for Quantum LDPC Codes Can Outperform BP-OSD","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cs.IT","math.IT"],"primary_cat":"quant-ph","authors_text":"Ang Li, Frank Mueller, Ming Wang","submitted_at":"2025-06-30T20:47:28Z","abstract_excerpt":"This work presents a hardware-efficient and fully parallelizable decoder for quantum LDPC codes that leverages belief propagation (BP) with a speculative post-processing strategy inspired by classical Chase decoding algorithm. By monitoring bit-level oscillation patterns during BP, our method identifies unreliable bits and generates multiple candidate vectors to selectively flip syndromes. Each modified syndrome is then decoded independently using short-depth BP, a process we refer to as BP-SF (syndrome flip). This design eliminates the need for costly Gaussian elimination used in the current "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2507.00254","kind":"arxiv","version":3},"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/2507.00254/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":"2026-07-29T00:24:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7js1++40/Woj5+e7rhIFc21YK3cJIEwohb53QTYK8fJjWUDApWnbyoB1U177O0dJT4VYGRlh/brBNGHKCHmhDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T16:44:16.136786Z"},"content_sha256":"031fbef607beb98a0c5525765ce06564054881195f14777460cfcf9898111fa1","schema_version":"1.0","event_id":"sha256:031fbef607beb98a0c5525765ce06564054881195f14777460cfcf9898111fa1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/74QJL2QV7KFMTTPXVDNWGRCAD3/bundle.json","state_url":"https://pith.science/pith/74QJL2QV7KFMTTPXVDNWGRCAD3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/74QJL2QV7KFMTTPXVDNWGRCAD3/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":"2026-08-07T16:44:16Z","links":{"resolver":"https://pith.science/pith/74QJL2QV7KFMTTPXVDNWGRCAD3","bundle":"https://pith.science/pith/74QJL2QV7KFMTTPXVDNWGRCAD3/bundle.json","state":"https://pith.science/pith/74QJL2QV7KFMTTPXVDNWGRCAD3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/74QJL2QV7KFMTTPXVDNWGRCAD3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:74QJL2QV7KFMTTPXVDNWGRCAD3","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":"b9f6b09000f1794a07112064f017234658ed8643ae4336bee39471db4c3bf85a","cross_cats_sorted":["cs.IT","math.IT"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2025-06-30T20:47:28Z","title_canon_sha256":"9b0fb6e31fe4adcd7af95cfb84369b167eaa90150b82c154a9e43fb967a419b4"},"schema_version":"1.0","source":{"id":"2507.00254","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2507.00254","created_at":"2026-07-29T00:24:31Z"},{"alias_kind":"arxiv_version","alias_value":"2507.00254v3","created_at":"2026-07-29T00:24:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2507.00254","created_at":"2026-07-29T00:24:31Z"},{"alias_kind":"pith_short_12","alias_value":"74QJL2QV7KFM","created_at":"2026-07-29T00:24:31Z"},{"alias_kind":"pith_short_16","alias_value":"74QJL2QV7KFMTTPX","created_at":"2026-07-29T00:24:31Z"},{"alias_kind":"pith_short_8","alias_value":"74QJL2QV","created_at":"2026-07-29T00:24:31Z"}],"graph_snapshots":[{"event_id":"sha256:031fbef607beb98a0c5525765ce06564054881195f14777460cfcf9898111fa1","target":"graph","created_at":"2026-07-29T00:24:31Z","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/2507.00254/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"This work presents a hardware-efficient and fully parallelizable decoder for quantum LDPC codes that leverages belief propagation (BP) with a speculative post-processing strategy inspired by classical Chase decoding algorithm. By monitoring bit-level oscillation patterns during BP, our method identifies unreliable bits and generates multiple candidate vectors to selectively flip syndromes. Each modified syndrome is then decoded independently using short-depth BP, a process we refer to as BP-SF (syndrome flip). This design eliminates the need for costly Gaussian elimination used in the current ","authors_text":"Ang Li, Frank Mueller, Ming Wang","cross_cats":["cs.IT","math.IT"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2025-06-30T20:47:28Z","title":"Fully Parallelized BP Decoding for Quantum LDPC Codes Can Outperform BP-OSD"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2507.00254","kind":"arxiv","version":3},"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:d204329d3f4c24712a642dcf36d23e43b7dba6d8ebb2374b93f14cb9fa7f2734","target":"record","created_at":"2026-07-29T00:24:31Z","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":"b9f6b09000f1794a07112064f017234658ed8643ae4336bee39471db4c3bf85a","cross_cats_sorted":["cs.IT","math.IT"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2025-06-30T20:47:28Z","title_canon_sha256":"9b0fb6e31fe4adcd7af95cfb84369b167eaa90150b82c154a9e43fb967a419b4"},"schema_version":"1.0","source":{"id":"2507.00254","kind":"arxiv","version":3}},"canonical_sha256":"ff2095ea15fa8ac9cdf7a8db6344401ef5c1d32fe32a0fcba7c2f914ac4a86d0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ff2095ea15fa8ac9cdf7a8db6344401ef5c1d32fe32a0fcba7c2f914ac4a86d0","first_computed_at":"2026-07-29T00:24:31.840932Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-29T00:24:31.840932Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Vk+idjV2RZTWm3qQJmhEALDf3yYePq1Jl5IRbS22M3UAUrSq2OpiCGbeWqyCxsyELqb8D+fwR30LN17JYVltDg==","signature_status":"signed_v1","signed_at":"2026-07-29T00:24:31.841893Z","signed_message":"canonical_sha256_bytes"},"source_id":"2507.00254","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d204329d3f4c24712a642dcf36d23e43b7dba6d8ebb2374b93f14cb9fa7f2734","sha256:031fbef607beb98a0c5525765ce06564054881195f14777460cfcf9898111fa1"],"state_sha256":"b781b2dd151ae68a1af5dfbd1730bf88e239793108084c3f064f200d0ef5750d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3Rk9cC+ZO9hdIicsXqEQUweBx7DnGr/PJBwcWRaLIa0/CGKUQPr3RDDIIGAdztQUK22tcDAU//y1B5O8mgoVAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-07T16:44:16.142172Z","bundle_sha256":"8b9f174e157ae4c04e0da1d41468d51833c1b6cac05f4a3b289b96ac034ced36"}}