{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2002:FZVN6TF2HGBBNRYVZ6RQAC26PY","short_pith_number":"pith:FZVN6TF2","canonical_record":{"source":{"id":"cs/0209006","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"cs.NI","submitted_at":"2002-09-03T20:34:12Z","cross_cats_sorted":[],"title_canon_sha256":"d7bb5016e04f306f06bd365875b9d4ccf1e0ffa7a1e438a11923e455a0cda0a8","abstract_canon_sha256":"a01d9a4020b52c50c5ff86f612e7deb8ce0bc2cf01be3a1d105d148307d867cf"},"schema_version":"1.0"},"canonical_sha256":"2e6adf4cba398216c715cfa3000b5e7e2d37f13cd1b18603a1b62f92097da3a3","source":{"kind":"arxiv","id":"cs/0209006","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cs/0209006","created_at":"2026-05-18T00:57:45Z"},{"alias_kind":"arxiv_version","alias_value":"cs/0209006v2","created_at":"2026-05-18T00:57:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cs/0209006","created_at":"2026-05-18T00:57:45Z"},{"alias_kind":"pith_short_12","alias_value":"FZVN6TF2HGBB","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"FZVN6TF2HGBBNRYV","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"FZVN6TF2","created_at":"2026-05-18T12:25:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2002:FZVN6TF2HGBBNRYVZ6RQAC26PY","target":"record","payload":{"canonical_record":{"source":{"id":"cs/0209006","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"cs.NI","submitted_at":"2002-09-03T20:34:12Z","cross_cats_sorted":[],"title_canon_sha256":"d7bb5016e04f306f06bd365875b9d4ccf1e0ffa7a1e438a11923e455a0cda0a8","abstract_canon_sha256":"a01d9a4020b52c50c5ff86f612e7deb8ce0bc2cf01be3a1d105d148307d867cf"},"schema_version":"1.0"},"canonical_sha256":"2e6adf4cba398216c715cfa3000b5e7e2d37f13cd1b18603a1b62f92097da3a3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:57:45.218862Z","signature_b64":"kpJrT1rnHUieg6z6/rlqxuVJk0C+A0lyWqHAFdqKdPyPQ23CRHUDyGsemr4g6vfAxaDEb+Y1bwKfw5y9izFcBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2e6adf4cba398216c715cfa3000b5e7e2d37f13cd1b18603a1b62f92097da3a3","last_reissued_at":"2026-05-18T00:57:45.218268Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:57:45.218268Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"cs/0209006","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":"2026-05-18T00:57:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vZF87TPndJGfWLdAGMg8FkB/tNYZEW+pQLlmKxfMzvsxy20fRWZSfMlpH42uFi90cknaHZ66x2ULB8fJl9WEAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T18:13:50.355899Z"},"content_sha256":"4e98f3b2d3039519b60f16635692c281ef280a267cb8517b3d18f1269fff02a3","schema_version":"1.0","event_id":"sha256:4e98f3b2d3039519b60f16635692c281ef280a267cb8517b3d18f1269fff02a3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2002:FZVN6TF2HGBBNRYVZ6RQAC26PY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Fast optical layer mesh protection using pre-cross-connected trails","license":"","headline":"","cross_cats":[],"primary_cat":"cs.NI","authors_text":"Anthony M. Ffrench, Fabian Chudak, Timothy Y. Chow","submitted_at":"2002-09-03T20:34:12Z","abstract_excerpt":"Conventional optical networks are based on SONET rings, but since rings are known to use bandwidth inefficiently, there has been much research into shared mesh protection, which promises significant bandwidth savings. Unfortunately, most shared mesh protection schemes cannot guarantee that failed traffic will be restored within the 50 ms timeframe that SONET standards specify. A notable exception is the p-cycle scheme of Grover and Stamatelakis. We argue, however, that p-cycles have certain limitations, e.g., there is no easy way to adapt p-cycles to a path-based protection scheme, and p-cycle"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cs/0209006","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":"2026-05-18T00:57:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FvDHtTr+qrTNn9gxsiM8AGEZ3C9vEM3H7Y+5fuizvFryj+x4NBMsGnlrYrjC3hwerlxhKnUxphHDnTEi4vO1Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T18:13:50.356555Z"},"content_sha256":"49e60c55a8e93d490bdbb92c97872da99775c02c5db0ac32c1e5966659ce8347","schema_version":"1.0","event_id":"sha256:49e60c55a8e93d490bdbb92c97872da99775c02c5db0ac32c1e5966659ce8347"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FZVN6TF2HGBBNRYVZ6RQAC26PY/bundle.json","state_url":"https://pith.science/pith/FZVN6TF2HGBBNRYVZ6RQAC26PY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FZVN6TF2HGBBNRYVZ6RQAC26PY/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":"2026-05-27T18:13:50Z","links":{"resolver":"https://pith.science/pith/FZVN6TF2HGBBNRYVZ6RQAC26PY","bundle":"https://pith.science/pith/FZVN6TF2HGBBNRYVZ6RQAC26PY/bundle.json","state":"https://pith.science/pith/FZVN6TF2HGBBNRYVZ6RQAC26PY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FZVN6TF2HGBBNRYVZ6RQAC26PY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2002:FZVN6TF2HGBBNRYVZ6RQAC26PY","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":"a01d9a4020b52c50c5ff86f612e7deb8ce0bc2cf01be3a1d105d148307d867cf","cross_cats_sorted":[],"license":"","primary_cat":"cs.NI","submitted_at":"2002-09-03T20:34:12Z","title_canon_sha256":"d7bb5016e04f306f06bd365875b9d4ccf1e0ffa7a1e438a11923e455a0cda0a8"},"schema_version":"1.0","source":{"id":"cs/0209006","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cs/0209006","created_at":"2026-05-18T00:57:45Z"},{"alias_kind":"arxiv_version","alias_value":"cs/0209006v2","created_at":"2026-05-18T00:57:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cs/0209006","created_at":"2026-05-18T00:57:45Z"},{"alias_kind":"pith_short_12","alias_value":"FZVN6TF2HGBB","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"FZVN6TF2HGBBNRYV","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"FZVN6TF2","created_at":"2026-05-18T12:25:50Z"}],"graph_snapshots":[{"event_id":"sha256:49e60c55a8e93d490bdbb92c97872da99775c02c5db0ac32c1e5966659ce8347","target":"graph","created_at":"2026-05-18T00:57:45Z","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":"Conventional optical networks are based on SONET rings, but since rings are known to use bandwidth inefficiently, there has been much research into shared mesh protection, which promises significant bandwidth savings. Unfortunately, most shared mesh protection schemes cannot guarantee that failed traffic will be restored within the 50 ms timeframe that SONET standards specify. A notable exception is the p-cycle scheme of Grover and Stamatelakis. We argue, however, that p-cycles have certain limitations, e.g., there is no easy way to adapt p-cycles to a path-based protection scheme, and p-cycle","authors_text":"Anthony M. Ffrench, Fabian Chudak, Timothy Y. Chow","cross_cats":[],"headline":"","license":"","primary_cat":"cs.NI","submitted_at":"2002-09-03T20:34:12Z","title":"Fast optical layer mesh protection using pre-cross-connected trails"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cs/0209006","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":"sha256:4e98f3b2d3039519b60f16635692c281ef280a267cb8517b3d18f1269fff02a3","target":"record","created_at":"2026-05-18T00:57:45Z","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":"a01d9a4020b52c50c5ff86f612e7deb8ce0bc2cf01be3a1d105d148307d867cf","cross_cats_sorted":[],"license":"","primary_cat":"cs.NI","submitted_at":"2002-09-03T20:34:12Z","title_canon_sha256":"d7bb5016e04f306f06bd365875b9d4ccf1e0ffa7a1e438a11923e455a0cda0a8"},"schema_version":"1.0","source":{"id":"cs/0209006","kind":"arxiv","version":2}},"canonical_sha256":"2e6adf4cba398216c715cfa3000b5e7e2d37f13cd1b18603a1b62f92097da3a3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2e6adf4cba398216c715cfa3000b5e7e2d37f13cd1b18603a1b62f92097da3a3","first_computed_at":"2026-05-18T00:57:45.218268Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:57:45.218268Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"kpJrT1rnHUieg6z6/rlqxuVJk0C+A0lyWqHAFdqKdPyPQ23CRHUDyGsemr4g6vfAxaDEb+Y1bwKfw5y9izFcBg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:57:45.218862Z","signed_message":"canonical_sha256_bytes"},"source_id":"cs/0209006","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4e98f3b2d3039519b60f16635692c281ef280a267cb8517b3d18f1269fff02a3","sha256:49e60c55a8e93d490bdbb92c97872da99775c02c5db0ac32c1e5966659ce8347"],"state_sha256":"13fc8c58ec8a5728396e3f041c96a86b8b226cbbf7522e6203b65aa9c2a100ab"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"biDRTjDlmItA4rpedtS6gjbmw8ZYr8cX2WWlCFoiNB3rN7MKLA1bN4lF8BGS4TxGB04kKxaQcmOz0Jjd1AOOBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T18:13:50.359150Z","bundle_sha256":"e2344dfdca2d07d5c6269e1b2ab66af7d4b45d6a057eb01a1008f42ce00c7b7f"}}