{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:KV6TSYVNLBBGA56CVBNE3K6C4E","short_pith_number":"pith:KV6TSYVN","canonical_record":{"source":{"id":"1004.5179","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2010-04-29T03:44:13Z","cross_cats_sorted":["cs.DS"],"title_canon_sha256":"fbebba117824ffe55fe0285ee0e32381d5f3e395f104fac938e77bd17f480870","abstract_canon_sha256":"dbe93b137bb0f72f59ecc9e11b0e0bcd6be8ee1b9ed670aab5cf36c86cd52149"},"schema_version":"1.0"},"canonical_sha256":"557d3962ad58426077c2a85a4dabc2e12e771d0914787c0d8011d49aed4fb555","source":{"kind":"arxiv","id":"1004.5179","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1004.5179","created_at":"2026-05-18T04:03:32Z"},{"alias_kind":"arxiv_version","alias_value":"1004.5179v2","created_at":"2026-05-18T04:03:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1004.5179","created_at":"2026-05-18T04:03:32Z"},{"alias_kind":"pith_short_12","alias_value":"KV6TSYVNLBBG","created_at":"2026-05-18T12:26:09Z"},{"alias_kind":"pith_short_16","alias_value":"KV6TSYVNLBBGA56C","created_at":"2026-05-18T12:26:09Z"},{"alias_kind":"pith_short_8","alias_value":"KV6TSYVN","created_at":"2026-05-18T12:26:09Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:KV6TSYVNLBBGA56CVBNE3K6C4E","target":"record","payload":{"canonical_record":{"source":{"id":"1004.5179","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2010-04-29T03:44:13Z","cross_cats_sorted":["cs.DS"],"title_canon_sha256":"fbebba117824ffe55fe0285ee0e32381d5f3e395f104fac938e77bd17f480870","abstract_canon_sha256":"dbe93b137bb0f72f59ecc9e11b0e0bcd6be8ee1b9ed670aab5cf36c86cd52149"},"schema_version":"1.0"},"canonical_sha256":"557d3962ad58426077c2a85a4dabc2e12e771d0914787c0d8011d49aed4fb555","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:03:32.626207Z","signature_b64":"5uy0SHF7Dfo3qXhUXbObP4LZKHaTdnTp1or2ZQ1prp25s/0OnzbxLVA8N+rzuD5NEesDtnpKpdUf9FN7ehGpBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"557d3962ad58426077c2a85a4dabc2e12e771d0914787c0d8011d49aed4fb555","last_reissued_at":"2026-05-18T04:03:32.625376Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:03:32.625376Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1004.5179","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":"2026-05-18T04:03:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"v3T01UCa2goLLoZSACmD3Vdb1Y2m2swHsXYCypbBoH8Dsfca1JFTEwB6QzvdGjplqNoQQd0/bwerqRq/49W0CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T00:30:29.899644Z"},"content_sha256":"2a29aa2018a0b0ca4e27db1b22a9723fc74659dde42a2ccae8379a498f8fded4","schema_version":"1.0","event_id":"sha256:2a29aa2018a0b0ca4e27db1b22a9723fc74659dde42a2ccae8379a498f8fded4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:KV6TSYVNLBBGA56CVBNE3K6C4E","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Minimal memory requirements for pearl-necklace encoders of quantum convolutional codes","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.DS"],"primary_cat":"quant-ph","authors_text":"Mark M. Wilde, Monireh Houshmand, Saied Hosseini-Khayat","submitted_at":"2010-04-29T03:44:13Z","abstract_excerpt":"One of the major goals in quantum information processing is to reduce the overhead associated with the practical implementation of quantum protocols, and often, routines for quantum error correction account for most of this overhead. A particular technique for quantum error correction that may be useful for protecting a stream of quantum information is quantum convolutional coding. The encoder for a quantum convolutional code has a representation as a convolutional encoder or as a \"pearl-necklace\" encoder. In the pearl-necklace representation, it has not been particularly clear in the research"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1004.5179","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":""},"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":"2026-05-18T04:03:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6VJ6RxFH+tyx3KDpnBa3p2iG9BzC3S5uAqxXRxKz1KFK8S/53HGqfcFHjLHba0BK++JvJ59Gd2Pb7HDcI2N4CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T00:30:29.900336Z"},"content_sha256":"c597da08dae27e98e23735240639386e4c855752c030616e4a028fa371dac408","schema_version":"1.0","event_id":"sha256:c597da08dae27e98e23735240639386e4c855752c030616e4a028fa371dac408"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KV6TSYVNLBBGA56CVBNE3K6C4E/bundle.json","state_url":"https://pith.science/pith/KV6TSYVNLBBGA56CVBNE3K6C4E/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KV6TSYVNLBBGA56CVBNE3K6C4E/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":"2026-06-05T00:30:29Z","links":{"resolver":"https://pith.science/pith/KV6TSYVNLBBGA56CVBNE3K6C4E","bundle":"https://pith.science/pith/KV6TSYVNLBBGA56CVBNE3K6C4E/bundle.json","state":"https://pith.science/pith/KV6TSYVNLBBGA56CVBNE3K6C4E/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KV6TSYVNLBBGA56CVBNE3K6C4E/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:KV6TSYVNLBBGA56CVBNE3K6C4E","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":"dbe93b137bb0f72f59ecc9e11b0e0bcd6be8ee1b9ed670aab5cf36c86cd52149","cross_cats_sorted":["cs.DS"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2010-04-29T03:44:13Z","title_canon_sha256":"fbebba117824ffe55fe0285ee0e32381d5f3e395f104fac938e77bd17f480870"},"schema_version":"1.0","source":{"id":"1004.5179","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1004.5179","created_at":"2026-05-18T04:03:32Z"},{"alias_kind":"arxiv_version","alias_value":"1004.5179v2","created_at":"2026-05-18T04:03:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1004.5179","created_at":"2026-05-18T04:03:32Z"},{"alias_kind":"pith_short_12","alias_value":"KV6TSYVNLBBG","created_at":"2026-05-18T12:26:09Z"},{"alias_kind":"pith_short_16","alias_value":"KV6TSYVNLBBGA56C","created_at":"2026-05-18T12:26:09Z"},{"alias_kind":"pith_short_8","alias_value":"KV6TSYVN","created_at":"2026-05-18T12:26:09Z"}],"graph_snapshots":[{"event_id":"sha256:c597da08dae27e98e23735240639386e4c855752c030616e4a028fa371dac408","target":"graph","created_at":"2026-05-18T04:03:32Z","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":"One of the major goals in quantum information processing is to reduce the overhead associated with the practical implementation of quantum protocols, and often, routines for quantum error correction account for most of this overhead. A particular technique for quantum error correction that may be useful for protecting a stream of quantum information is quantum convolutional coding. The encoder for a quantum convolutional code has a representation as a convolutional encoder or as a \"pearl-necklace\" encoder. In the pearl-necklace representation, it has not been particularly clear in the research","authors_text":"Mark M. Wilde, Monireh Houshmand, Saied Hosseini-Khayat","cross_cats":["cs.DS"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2010-04-29T03:44:13Z","title":"Minimal memory requirements for pearl-necklace encoders of quantum convolutional codes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1004.5179","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":"sha256:2a29aa2018a0b0ca4e27db1b22a9723fc74659dde42a2ccae8379a498f8fded4","target":"record","created_at":"2026-05-18T04:03:32Z","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":"dbe93b137bb0f72f59ecc9e11b0e0bcd6be8ee1b9ed670aab5cf36c86cd52149","cross_cats_sorted":["cs.DS"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2010-04-29T03:44:13Z","title_canon_sha256":"fbebba117824ffe55fe0285ee0e32381d5f3e395f104fac938e77bd17f480870"},"schema_version":"1.0","source":{"id":"1004.5179","kind":"arxiv","version":2}},"canonical_sha256":"557d3962ad58426077c2a85a4dabc2e12e771d0914787c0d8011d49aed4fb555","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"557d3962ad58426077c2a85a4dabc2e12e771d0914787c0d8011d49aed4fb555","first_computed_at":"2026-05-18T04:03:32.625376Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:03:32.625376Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"5uy0SHF7Dfo3qXhUXbObP4LZKHaTdnTp1or2ZQ1prp25s/0OnzbxLVA8N+rzuD5NEesDtnpKpdUf9FN7ehGpBw==","signature_status":"signed_v1","signed_at":"2026-05-18T04:03:32.626207Z","signed_message":"canonical_sha256_bytes"},"source_id":"1004.5179","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2a29aa2018a0b0ca4e27db1b22a9723fc74659dde42a2ccae8379a498f8fded4","sha256:c597da08dae27e98e23735240639386e4c855752c030616e4a028fa371dac408"],"state_sha256":"ef8a6df1574bd374aef0649761a6bdce6452dc70d559119dad3a557c73eb01a0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"S24LGi8mnJuwblkwUKFgcAEwXa1LsneuYkxNL/qAcspgzvE3AhJkwYsRdEvq8BYPHx48mBXVVHOdFDmH3R4kAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T00:30:29.904105Z","bundle_sha256":"e366ef8f5a937040af6be1f1caca9bbbafa265f12f4cba0d6fa34838e2ce423c"}}