{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2003:JXIMIZNVNKXXSADXVAQ3D2BYVD","short_pith_number":"pith:JXIMIZNV","canonical_record":{"source":{"id":"quant-ph/0304189","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"quant-ph","submitted_at":"2003-04-29T06:35:45Z","cross_cats_sorted":[],"title_canon_sha256":"43c31df623dd0bd57b905999518987e9b32d28905f5f128c8b8867ca859f8498","abstract_canon_sha256":"9a46fc4022cff047ce423f8ca9284c0577b69f71a200a8e278309d52f74a1eaf"},"schema_version":"1.0"},"canonical_sha256":"4dd0c465b56aaf790077a821b1e838a8d0bcd50843f09d74c671a5499979b873","source":{"kind":"arxiv","id":"quant-ph/0304189","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"quant-ph/0304189","created_at":"2026-07-04T16:42:29Z"},{"alias_kind":"arxiv_version","alias_value":"quant-ph/0304189v2","created_at":"2026-07-04T16:42:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.quant-ph/0304189","created_at":"2026-07-04T16:42:29Z"},{"alias_kind":"pith_short_12","alias_value":"JXIMIZNVNKXX","created_at":"2026-07-04T16:42:29Z"},{"alias_kind":"pith_short_16","alias_value":"JXIMIZNVNKXXSADX","created_at":"2026-07-04T16:42:29Z"},{"alias_kind":"pith_short_8","alias_value":"JXIMIZNV","created_at":"2026-07-04T16:42:29Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2003:JXIMIZNVNKXXSADXVAQ3D2BYVD","target":"record","payload":{"canonical_record":{"source":{"id":"quant-ph/0304189","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"quant-ph","submitted_at":"2003-04-29T06:35:45Z","cross_cats_sorted":[],"title_canon_sha256":"43c31df623dd0bd57b905999518987e9b32d28905f5f128c8b8867ca859f8498","abstract_canon_sha256":"9a46fc4022cff047ce423f8ca9284c0577b69f71a200a8e278309d52f74a1eaf"},"schema_version":"1.0"},"canonical_sha256":"4dd0c465b56aaf790077a821b1e838a8d0bcd50843f09d74c671a5499979b873","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:42:29.677371Z","signature_b64":"EHNEJuxwNG335vnXn/ZtlTwwFGbuH3HGezsx2BFzuvw8eHhem9wmrrqlj5GEdfZeHHiSQ2xXc6U4RPoCCHwJCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4dd0c465b56aaf790077a821b1e838a8d0bcd50843f09d74c671a5499979b873","last_reissued_at":"2026-07-04T16:42:29.677010Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:42:29.677010Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"quant-ph/0304189","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T16:42:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3Z9Uc8p/kFJS7a4QcWqjK06BMlBJrcaX6qkbbs4+E84guSC8Co2byJ3ZHc9uVchi+04P/1nTv8VZN0rTvwNEBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T20:08:10.278856Z"},"content_sha256":"29c85646b5e1ad1634904e3b798a09b5af3d63396c682b82abe4d5c2b3cf5e25","schema_version":"1.0","event_id":"sha256:29c85646b5e1ad1634904e3b798a09b5af3d63396c682b82abe4d5c2b3cf5e25"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2003:JXIMIZNVNKXXSADXVAQ3D2BYVD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Description of a quantum convolutional code","license":"","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"H. Ollivier, J.-P. Tillich","submitted_at":"2003-04-29T06:35:45Z","abstract_excerpt":"We describe a quantum error correction scheme aimed at protecting a flow of quantum information over long distance communication. It is largely inspired by the theory of classical convolutional codes which are used in similar circumstances in classical communication. The particular example shown here uses the stabilizer formalism, which provides an explicit encoding circuit. An associated error estimation algorithm is given explicitly and shown to provide the most likely error over any memoryless quantum channel, while its complexity grows only linearly with the number of encoded qubits."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"quant-ph/0304189","kind":"arxiv","version":2},"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/quant-ph/0304189/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":"2026-07-04T16:42:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hpf3UM8P2GLxipjpCg13P7Cvmntx/yrRLye0FElj3/jpkkkjTAQ742aX+CXL9s/OYL17ZU8++VMW61ql4lQ7Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T20:08:10.279368Z"},"content_sha256":"a78c745f15f5de10287ba88d5b7d6e1d2393c462ec884c5d3a204267ee0a2754","schema_version":"1.0","event_id":"sha256:a78c745f15f5de10287ba88d5b7d6e1d2393c462ec884c5d3a204267ee0a2754"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JXIMIZNVNKXXSADXVAQ3D2BYVD/bundle.json","state_url":"https://pith.science/pith/JXIMIZNVNKXXSADXVAQ3D2BYVD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JXIMIZNVNKXXSADXVAQ3D2BYVD/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":"2026-08-06T20:08:10Z","links":{"resolver":"https://pith.science/pith/JXIMIZNVNKXXSADXVAQ3D2BYVD","bundle":"https://pith.science/pith/JXIMIZNVNKXXSADXVAQ3D2BYVD/bundle.json","state":"https://pith.science/pith/JXIMIZNVNKXXSADXVAQ3D2BYVD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JXIMIZNVNKXXSADXVAQ3D2BYVD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2003:JXIMIZNVNKXXSADXVAQ3D2BYVD","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":"9a46fc4022cff047ce423f8ca9284c0577b69f71a200a8e278309d52f74a1eaf","cross_cats_sorted":[],"license":"","primary_cat":"quant-ph","submitted_at":"2003-04-29T06:35:45Z","title_canon_sha256":"43c31df623dd0bd57b905999518987e9b32d28905f5f128c8b8867ca859f8498"},"schema_version":"1.0","source":{"id":"quant-ph/0304189","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"quant-ph/0304189","created_at":"2026-07-04T16:42:29Z"},{"alias_kind":"arxiv_version","alias_value":"quant-ph/0304189v2","created_at":"2026-07-04T16:42:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.quant-ph/0304189","created_at":"2026-07-04T16:42:29Z"},{"alias_kind":"pith_short_12","alias_value":"JXIMIZNVNKXX","created_at":"2026-07-04T16:42:29Z"},{"alias_kind":"pith_short_16","alias_value":"JXIMIZNVNKXXSADX","created_at":"2026-07-04T16:42:29Z"},{"alias_kind":"pith_short_8","alias_value":"JXIMIZNV","created_at":"2026-07-04T16:42:29Z"}],"graph_snapshots":[{"event_id":"sha256:a78c745f15f5de10287ba88d5b7d6e1d2393c462ec884c5d3a204267ee0a2754","target":"graph","created_at":"2026-07-04T16:42:29Z","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/quant-ph/0304189/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We describe a quantum error correction scheme aimed at protecting a flow of quantum information over long distance communication. It is largely inspired by the theory of classical convolutional codes which are used in similar circumstances in classical communication. The particular example shown here uses the stabilizer formalism, which provides an explicit encoding circuit. An associated error estimation algorithm is given explicitly and shown to provide the most likely error over any memoryless quantum channel, while its complexity grows only linearly with the number of encoded qubits.","authors_text":"H. Ollivier, J.-P. Tillich","cross_cats":[],"headline":"","license":"","primary_cat":"quant-ph","submitted_at":"2003-04-29T06:35:45Z","title":"Description of a quantum convolutional code"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"quant-ph/0304189","kind":"arxiv","version":2},"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":"sha256:29c85646b5e1ad1634904e3b798a09b5af3d63396c682b82abe4d5c2b3cf5e25","target":"record","created_at":"2026-07-04T16:42:29Z","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":"9a46fc4022cff047ce423f8ca9284c0577b69f71a200a8e278309d52f74a1eaf","cross_cats_sorted":[],"license":"","primary_cat":"quant-ph","submitted_at":"2003-04-29T06:35:45Z","title_canon_sha256":"43c31df623dd0bd57b905999518987e9b32d28905f5f128c8b8867ca859f8498"},"schema_version":"1.0","source":{"id":"quant-ph/0304189","kind":"arxiv","version":2}},"canonical_sha256":"4dd0c465b56aaf790077a821b1e838a8d0bcd50843f09d74c671a5499979b873","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4dd0c465b56aaf790077a821b1e838a8d0bcd50843f09d74c671a5499979b873","first_computed_at":"2026-07-04T16:42:29.677010Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:42:29.677010Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"EHNEJuxwNG335vnXn/ZtlTwwFGbuH3HGezsx2BFzuvw8eHhem9wmrrqlj5GEdfZeHHiSQ2xXc6U4RPoCCHwJCQ==","signature_status":"signed_v1","signed_at":"2026-07-04T16:42:29.677371Z","signed_message":"canonical_sha256_bytes"},"source_id":"quant-ph/0304189","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:29c85646b5e1ad1634904e3b798a09b5af3d63396c682b82abe4d5c2b3cf5e25","sha256:a78c745f15f5de10287ba88d5b7d6e1d2393c462ec884c5d3a204267ee0a2754"],"state_sha256":"05924db951518d7112d11ff0b949a2cf5b8a7f4a81ead732350e9bda54dcb088"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Dk4ruobvL/49CnChehs6VOFF+zXtjlO4qI6kDmi8rX9iZL7v9BX+m8NvgSWog3yAQsp+OKjG9oGfZcZUj2ERCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T20:08:10.284467Z","bundle_sha256":"81462d823b0ef3e2d9f7ba0a9e000e6e80a0260fbc660629a6da1241aa75820a"}}