{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:H4BTS4CRZG32JBDPWXOOSNGP6I","short_pith_number":"pith:H4BTS4CR","canonical_record":{"source":{"id":"1906.09792","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.IT","submitted_at":"2019-06-24T08:53:09Z","cross_cats_sorted":["eess.SP","math.IT"],"title_canon_sha256":"a25740be141708cb6dcbd7edff48a6839c7b2e20678d33f32c74313db726d240","abstract_canon_sha256":"660914d058bc15dd6d9548fbe87d3ec2ac7e7ab806fbd4ba1c20ed74c571bfdb"},"schema_version":"1.0"},"canonical_sha256":"3f03397051c9b7a4846fb5dce934cff227bcf77fe17e8b21df6b15630dc71e2c","source":{"kind":"arxiv","id":"1906.09792","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1906.09792","created_at":"2026-05-17T23:42:36Z"},{"alias_kind":"arxiv_version","alias_value":"1906.09792v1","created_at":"2026-05-17T23:42:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1906.09792","created_at":"2026-05-17T23:42:36Z"},{"alias_kind":"pith_short_12","alias_value":"H4BTS4CRZG32","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_16","alias_value":"H4BTS4CRZG32JBDP","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_8","alias_value":"H4BTS4CR","created_at":"2026-05-18T12:33:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:H4BTS4CRZG32JBDPWXOOSNGP6I","target":"record","payload":{"canonical_record":{"source":{"id":"1906.09792","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.IT","submitted_at":"2019-06-24T08:53:09Z","cross_cats_sorted":["eess.SP","math.IT"],"title_canon_sha256":"a25740be141708cb6dcbd7edff48a6839c7b2e20678d33f32c74313db726d240","abstract_canon_sha256":"660914d058bc15dd6d9548fbe87d3ec2ac7e7ab806fbd4ba1c20ed74c571bfdb"},"schema_version":"1.0"},"canonical_sha256":"3f03397051c9b7a4846fb5dce934cff227bcf77fe17e8b21df6b15630dc71e2c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:42:36.684674Z","signature_b64":"n6y20+/cKRc8W06JXNTGCC3TLF5ZULEYKlbi3OGdHz8b3kHTJ0r0hqmPmOdPpgTKOVRd/CP/Vb4/4PdVqBw7BA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3f03397051c9b7a4846fb5dce934cff227bcf77fe17e8b21df6b15630dc71e2c","last_reissued_at":"2026-05-17T23:42:36.684047Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:42:36.684047Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1906.09792","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":"2026-05-17T23:42:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"g/fPq7UoLFJETUb15wjlja3S2M3ktlwuL9kQpEP+NXrTuOfvl1fXNHzxd/l6WQnO4PIq/z5tcTDjmuH1EZtuDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T06:21:02.683903Z"},"content_sha256":"bde6803c8469c3f850a2e01f8a16359a136ccab2f8b0d7730208ee98a289ab2d","schema_version":"1.0","event_id":"sha256:bde6803c8469c3f850a2e01f8a16359a136ccab2f8b0d7730208ee98a289ab2d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:H4BTS4CRZG32JBDPWXOOSNGP6I","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A novel soft-aided bit-marking decoder for product codes","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["eess.SP","math.IT"],"primary_cat":"cs.IT","authors_text":"Alex Alvarado, Alireza Sheikh, Gabriele Liga","submitted_at":"2019-06-24T08:53:09Z","abstract_excerpt":"We introduce a novel soft-aided hard-decision decoder for product codes adopting bit marking via updated reliabilities at each decoding iteration. Gains up to 0.8 dB vs. standard iterative bounded distance decoding and up to 0.3 dB vs. our previously proposed bit-marking decoder are demonstrated."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1906.09792","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":""},"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":"2026-05-17T23:42:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lfibYnz+Q7EzwiBWpKr2BGKyyDP+2BMJkBXZNYqkelBwqB6ceRRrJRWcLgmK/ujVXqE0T9VvFfgIBAvsDW7fCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T06:21:02.684560Z"},"content_sha256":"46e1fa6511570ca18906e5863c8f5a92ab367618cc8119f5f0c975093777a296","schema_version":"1.0","event_id":"sha256:46e1fa6511570ca18906e5863c8f5a92ab367618cc8119f5f0c975093777a296"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/H4BTS4CRZG32JBDPWXOOSNGP6I/bundle.json","state_url":"https://pith.science/pith/H4BTS4CRZG32JBDPWXOOSNGP6I/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/H4BTS4CRZG32JBDPWXOOSNGP6I/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":"2026-05-28T06:21:02Z","links":{"resolver":"https://pith.science/pith/H4BTS4CRZG32JBDPWXOOSNGP6I","bundle":"https://pith.science/pith/H4BTS4CRZG32JBDPWXOOSNGP6I/bundle.json","state":"https://pith.science/pith/H4BTS4CRZG32JBDPWXOOSNGP6I/state.json","well_known_bundle":"https://pith.science/.well-known/pith/H4BTS4CRZG32JBDPWXOOSNGP6I/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:H4BTS4CRZG32JBDPWXOOSNGP6I","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":"660914d058bc15dd6d9548fbe87d3ec2ac7e7ab806fbd4ba1c20ed74c571bfdb","cross_cats_sorted":["eess.SP","math.IT"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.IT","submitted_at":"2019-06-24T08:53:09Z","title_canon_sha256":"a25740be141708cb6dcbd7edff48a6839c7b2e20678d33f32c74313db726d240"},"schema_version":"1.0","source":{"id":"1906.09792","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1906.09792","created_at":"2026-05-17T23:42:36Z"},{"alias_kind":"arxiv_version","alias_value":"1906.09792v1","created_at":"2026-05-17T23:42:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1906.09792","created_at":"2026-05-17T23:42:36Z"},{"alias_kind":"pith_short_12","alias_value":"H4BTS4CRZG32","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_16","alias_value":"H4BTS4CRZG32JBDP","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_8","alias_value":"H4BTS4CR","created_at":"2026-05-18T12:33:18Z"}],"graph_snapshots":[{"event_id":"sha256:46e1fa6511570ca18906e5863c8f5a92ab367618cc8119f5f0c975093777a296","target":"graph","created_at":"2026-05-17T23:42:36Z","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"},"paper":{"abstract_excerpt":"We introduce a novel soft-aided hard-decision decoder for product codes adopting bit marking via updated reliabilities at each decoding iteration. Gains up to 0.8 dB vs. standard iterative bounded distance decoding and up to 0.3 dB vs. our previously proposed bit-marking decoder are demonstrated.","authors_text":"Alex Alvarado, Alireza Sheikh, Gabriele Liga","cross_cats":["eess.SP","math.IT"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.IT","submitted_at":"2019-06-24T08:53:09Z","title":"A novel soft-aided bit-marking decoder for product codes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1906.09792","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:bde6803c8469c3f850a2e01f8a16359a136ccab2f8b0d7730208ee98a289ab2d","target":"record","created_at":"2026-05-17T23:42:36Z","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":"660914d058bc15dd6d9548fbe87d3ec2ac7e7ab806fbd4ba1c20ed74c571bfdb","cross_cats_sorted":["eess.SP","math.IT"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.IT","submitted_at":"2019-06-24T08:53:09Z","title_canon_sha256":"a25740be141708cb6dcbd7edff48a6839c7b2e20678d33f32c74313db726d240"},"schema_version":"1.0","source":{"id":"1906.09792","kind":"arxiv","version":1}},"canonical_sha256":"3f03397051c9b7a4846fb5dce934cff227bcf77fe17e8b21df6b15630dc71e2c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3f03397051c9b7a4846fb5dce934cff227bcf77fe17e8b21df6b15630dc71e2c","first_computed_at":"2026-05-17T23:42:36.684047Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:42:36.684047Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"n6y20+/cKRc8W06JXNTGCC3TLF5ZULEYKlbi3OGdHz8b3kHTJ0r0hqmPmOdPpgTKOVRd/CP/Vb4/4PdVqBw7BA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:42:36.684674Z","signed_message":"canonical_sha256_bytes"},"source_id":"1906.09792","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bde6803c8469c3f850a2e01f8a16359a136ccab2f8b0d7730208ee98a289ab2d","sha256:46e1fa6511570ca18906e5863c8f5a92ab367618cc8119f5f0c975093777a296"],"state_sha256":"08cf81b4ea11366ce84604a6d22b5351abf2d303455ad3032e7407643aac0802"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fc7q9BUUee5C103EOZaND25u5pmuAVmZ+ufi4+kmEO/imyyyS5gg6w2ciuOzF9YHnZs5HElyrVGVLQyZxhQlDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T06:21:02.687347Z","bundle_sha256":"133b42b430058d278d0aa87c92cfea8cef715ceee039c28b4132ac65f5ede95e"}}