{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:U427IDPEEKB37ASFMPGYQXYWO2","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":"a09b6507a0ea9383cb7d9e5d10cb47b3333d233f51c24becf6d70d4b545f3c7f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2020-09-21T09:23:36Z","title_canon_sha256":"dd19557bdd7588a687ac143a92d5f0de0b160ebddae8fb3c7ec9cebadf598522"},"schema_version":"1.0","source":{"id":"2009.09709","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2009.09709","created_at":"2026-07-05T01:36:52Z"},{"alias_kind":"arxiv_version","alias_value":"2009.09709v1","created_at":"2026-07-05T01:36:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2009.09709","created_at":"2026-07-05T01:36:52Z"},{"alias_kind":"pith_short_12","alias_value":"U427IDPEEKB3","created_at":"2026-07-05T01:36:52Z"},{"alias_kind":"pith_short_16","alias_value":"U427IDPEEKB37ASF","created_at":"2026-07-05T01:36:52Z"},{"alias_kind":"pith_short_8","alias_value":"U427IDPE","created_at":"2026-07-05T01:36:52Z"}],"graph_snapshots":[{"event_id":"sha256:58e6d97c4bd916fd8653508b574d68532f019201c18c8a50ee2369674377350e","target":"graph","created_at":"2026-07-05T01:36:52Z","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/2009.09709/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We experimentally evaluate a flexible DMT system using 4 to 8 50-GHz-grid C-band channels to transmit 448 Gb/s over up to 240 km SSMF. VSB filtering enabled by detuned lasers significantly reduces the impact of chromatic dispersion.","authors_text":"Annika Dochhan, Helmut Grie{\\ss}er, J\\\"org-Peter Elbers, Michael Eiselt","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2020-09-21T09:23:36Z","title":"Flexible bandwidth 448 Gb/s DMT Transmission for Next Generation Data Center Inter-Connects"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2009.09709","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:f30a551cf5b1720f8dd73c31ef0ff23168f037afff65086abd8356ca8dc61cea","target":"record","created_at":"2026-07-05T01:36:52Z","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":"a09b6507a0ea9383cb7d9e5d10cb47b3333d233f51c24becf6d70d4b545f3c7f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2020-09-21T09:23:36Z","title_canon_sha256":"dd19557bdd7588a687ac143a92d5f0de0b160ebddae8fb3c7ec9cebadf598522"},"schema_version":"1.0","source":{"id":"2009.09709","kind":"arxiv","version":1}},"canonical_sha256":"a735f40de42283bf824563cd885f16769675584a259dae534769794706378e5a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a735f40de42283bf824563cd885f16769675584a259dae534769794706378e5a","first_computed_at":"2026-07-05T01:36:52.279615Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:36:52.279615Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"WRZfosj4nQ9K5oKE02Pk4xzTox1c8YiAHt4eVdwIkCvMBity53kzWdU8tLJibwF4BklqEvbLbZqCp9u2DVlHBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T01:36:52.280090Z","signed_message":"canonical_sha256_bytes"},"source_id":"2009.09709","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f30a551cf5b1720f8dd73c31ef0ff23168f037afff65086abd8356ca8dc61cea","sha256:58e6d97c4bd916fd8653508b574d68532f019201c18c8a50ee2369674377350e"],"state_sha256":"72fc84c8831bc1eecaba7835cbd3bd5417cb0c970a8b2de9a68bdaa44fc83f35"}