{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:V5R6ZWTAH7FQYDU52SLENYYUBW","short_pith_number":"pith:V5R6ZWTA","canonical_record":{"source":{"id":"1009.4638","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2010-08-16T15:03:26Z","cross_cats_sorted":["math.IT"],"title_canon_sha256":"55d987ae9662c033ab88c78ce214c751f5b0bd06dcd046d928e93f5abd21d2e9","abstract_canon_sha256":"61e8146fa3282cae8368d2ef3df6faec6bd8fdb34f55d36c57b95cdcabcb4bbf"},"schema_version":"1.0"},"canonical_sha256":"af63ecda603fcb0c0e9dd49646e3140d889027832d4dc9ffba2df5b6ae3824e0","source":{"kind":"arxiv","id":"1009.4638","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1009.4638","created_at":"2026-05-18T04:40:21Z"},{"alias_kind":"arxiv_version","alias_value":"1009.4638v1","created_at":"2026-05-18T04:40:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1009.4638","created_at":"2026-05-18T04:40:21Z"},{"alias_kind":"pith_short_12","alias_value":"V5R6ZWTAH7FQ","created_at":"2026-05-18T12:26:15Z"},{"alias_kind":"pith_short_16","alias_value":"V5R6ZWTAH7FQYDU5","created_at":"2026-05-18T12:26:15Z"},{"alias_kind":"pith_short_8","alias_value":"V5R6ZWTA","created_at":"2026-05-18T12:26:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:V5R6ZWTAH7FQYDU52SLENYYUBW","target":"record","payload":{"canonical_record":{"source":{"id":"1009.4638","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2010-08-16T15:03:26Z","cross_cats_sorted":["math.IT"],"title_canon_sha256":"55d987ae9662c033ab88c78ce214c751f5b0bd06dcd046d928e93f5abd21d2e9","abstract_canon_sha256":"61e8146fa3282cae8368d2ef3df6faec6bd8fdb34f55d36c57b95cdcabcb4bbf"},"schema_version":"1.0"},"canonical_sha256":"af63ecda603fcb0c0e9dd49646e3140d889027832d4dc9ffba2df5b6ae3824e0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:40:21.965083Z","signature_b64":"nBNkaTRJSLYsfz+AqRkpzn81y+mqovMyh47gM2YbyP5MkJzD74sGK3rzyhwKcr8SSxv+pG8isjPcHUxibTIuCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"af63ecda603fcb0c0e9dd49646e3140d889027832d4dc9ffba2df5b6ae3824e0","last_reissued_at":"2026-05-18T04:40:21.964302Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:40:21.964302Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1009.4638","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":"2026-05-18T04:40:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oBTwuuuu1AunvwMkq3j/p+SmGnSI+LsLi18zJEgfrZx54QD96AusmdtpQZYD49GJIPL4YM/lp7ela2OI5J++DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T14:54:26.502192Z"},"content_sha256":"84379756c677803d60ee56fe7afb84a43866b0e62f55ca813a69f676e942c9c2","schema_version":"1.0","event_id":"sha256:84379756c677803d60ee56fe7afb84a43866b0e62f55ca813a69f676e942c9c2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:V5R6ZWTAH7FQYDU52SLENYYUBW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Novel Codes Family for Modified Spectral-Amplitude-Coding OCDMA Systems and Performance Analysis","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.IT"],"primary_cat":"cs.IT","authors_text":"Kambiz Jamshidi, Mohammad Noshad","submitted_at":"2010-08-16T15:03:26Z","abstract_excerpt":"In this paper a novel family of codes for modified spectral-amplitude-coding optical code division multiple access (SAC-OCDMA) is introduced. The proposed codes exist for more number of processing gains comparing to the previously reported codes. In the network using these codes, the number of users can be extended without any essential changes in the previous transmitters. In this study, we propose a construction method for these codes and compare their performance with previously reported codes."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1009.4638","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":"2026-05-18T04:40:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NcUa6wNlypyQds4CQtPjqqiwRBEVTH4VlOtX4XIwMzFdrbRC9KTfDcPsEoMq7eEdvkcmTZ21MCt5H+gz+2rxDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T14:54:26.502556Z"},"content_sha256":"ffd095bfa0407d857b529bd50c8bd3f81e193f37de98c1641654fcf38a3e7cb6","schema_version":"1.0","event_id":"sha256:ffd095bfa0407d857b529bd50c8bd3f81e193f37de98c1641654fcf38a3e7cb6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/V5R6ZWTAH7FQYDU52SLENYYUBW/bundle.json","state_url":"https://pith.science/pith/V5R6ZWTAH7FQYDU52SLENYYUBW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/V5R6ZWTAH7FQYDU52SLENYYUBW/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":"2026-06-09T14:54:26Z","links":{"resolver":"https://pith.science/pith/V5R6ZWTAH7FQYDU52SLENYYUBW","bundle":"https://pith.science/pith/V5R6ZWTAH7FQYDU52SLENYYUBW/bundle.json","state":"https://pith.science/pith/V5R6ZWTAH7FQYDU52SLENYYUBW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/V5R6ZWTAH7FQYDU52SLENYYUBW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:V5R6ZWTAH7FQYDU52SLENYYUBW","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":"61e8146fa3282cae8368d2ef3df6faec6bd8fdb34f55d36c57b95cdcabcb4bbf","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2010-08-16T15:03:26Z","title_canon_sha256":"55d987ae9662c033ab88c78ce214c751f5b0bd06dcd046d928e93f5abd21d2e9"},"schema_version":"1.0","source":{"id":"1009.4638","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1009.4638","created_at":"2026-05-18T04:40:21Z"},{"alias_kind":"arxiv_version","alias_value":"1009.4638v1","created_at":"2026-05-18T04:40:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1009.4638","created_at":"2026-05-18T04:40:21Z"},{"alias_kind":"pith_short_12","alias_value":"V5R6ZWTAH7FQ","created_at":"2026-05-18T12:26:15Z"},{"alias_kind":"pith_short_16","alias_value":"V5R6ZWTAH7FQYDU5","created_at":"2026-05-18T12:26:15Z"},{"alias_kind":"pith_short_8","alias_value":"V5R6ZWTA","created_at":"2026-05-18T12:26:15Z"}],"graph_snapshots":[{"event_id":"sha256:ffd095bfa0407d857b529bd50c8bd3f81e193f37de98c1641654fcf38a3e7cb6","target":"graph","created_at":"2026-05-18T04:40:21Z","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":"In this paper a novel family of codes for modified spectral-amplitude-coding optical code division multiple access (SAC-OCDMA) is introduced. The proposed codes exist for more number of processing gains comparing to the previously reported codes. In the network using these codes, the number of users can be extended without any essential changes in the previous transmitters. In this study, we propose a construction method for these codes and compare their performance with previously reported codes.","authors_text":"Kambiz Jamshidi, Mohammad Noshad","cross_cats":["math.IT"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2010-08-16T15:03:26Z","title":"Novel Codes Family for Modified Spectral-Amplitude-Coding OCDMA Systems and Performance Analysis"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1009.4638","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":"sha256:84379756c677803d60ee56fe7afb84a43866b0e62f55ca813a69f676e942c9c2","target":"record","created_at":"2026-05-18T04:40:21Z","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":"61e8146fa3282cae8368d2ef3df6faec6bd8fdb34f55d36c57b95cdcabcb4bbf","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2010-08-16T15:03:26Z","title_canon_sha256":"55d987ae9662c033ab88c78ce214c751f5b0bd06dcd046d928e93f5abd21d2e9"},"schema_version":"1.0","source":{"id":"1009.4638","kind":"arxiv","version":1}},"canonical_sha256":"af63ecda603fcb0c0e9dd49646e3140d889027832d4dc9ffba2df5b6ae3824e0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"af63ecda603fcb0c0e9dd49646e3140d889027832d4dc9ffba2df5b6ae3824e0","first_computed_at":"2026-05-18T04:40:21.964302Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:40:21.964302Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"nBNkaTRJSLYsfz+AqRkpzn81y+mqovMyh47gM2YbyP5MkJzD74sGK3rzyhwKcr8SSxv+pG8isjPcHUxibTIuCA==","signature_status":"signed_v1","signed_at":"2026-05-18T04:40:21.965083Z","signed_message":"canonical_sha256_bytes"},"source_id":"1009.4638","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:84379756c677803d60ee56fe7afb84a43866b0e62f55ca813a69f676e942c9c2","sha256:ffd095bfa0407d857b529bd50c8bd3f81e193f37de98c1641654fcf38a3e7cb6"],"state_sha256":"52d49dfb9cbb600dc0d8130280b1a618b1f425213b07efcf4b8a5a4b3363d46a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZhvQB0/hyl0LzT/ycJ7r7oPun0AA8Pj6NLQhBDf/JcF0Td4ozBzanG9vgv/31rFoNCZ2VPEolGjHB+cUmXZvBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-09T14:54:26.504531Z","bundle_sha256":"8c51e14b77a0aecd60b8c4da600bf121e11c09f57349d6f061b792767b684250"}}