{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:H66OSRPKVT74NM4RUPPU5DXITR","short_pith_number":"pith:H66OSRPK","canonical_record":{"source":{"id":"2403.17275","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.SP","submitted_at":"2024-03-25T23:42:41Z","cross_cats_sorted":[],"title_canon_sha256":"c178b5faf8818897672bba7812986dd21b094b0f00639af969c309ae34bff151","abstract_canon_sha256":"048563322977aab87efd0651640030c2e1582d94a6eee0382eb3557d7c86df21"},"schema_version":"1.0"},"canonical_sha256":"3fbce945eaacffc6b391a3df4e8ee89c5375e15a107eb5b3a8d67a3eab85090e","source":{"kind":"arxiv","id":"2403.17275","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2403.17275","created_at":"2026-07-05T08:00:47Z"},{"alias_kind":"arxiv_version","alias_value":"2403.17275v1","created_at":"2026-07-05T08:00:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2403.17275","created_at":"2026-07-05T08:00:47Z"},{"alias_kind":"pith_short_12","alias_value":"H66OSRPKVT74","created_at":"2026-07-05T08:00:47Z"},{"alias_kind":"pith_short_16","alias_value":"H66OSRPKVT74NM4R","created_at":"2026-07-05T08:00:47Z"},{"alias_kind":"pith_short_8","alias_value":"H66OSRPK","created_at":"2026-07-05T08:00:47Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:H66OSRPKVT74NM4RUPPU5DXITR","target":"record","payload":{"canonical_record":{"source":{"id":"2403.17275","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.SP","submitted_at":"2024-03-25T23:42:41Z","cross_cats_sorted":[],"title_canon_sha256":"c178b5faf8818897672bba7812986dd21b094b0f00639af969c309ae34bff151","abstract_canon_sha256":"048563322977aab87efd0651640030c2e1582d94a6eee0382eb3557d7c86df21"},"schema_version":"1.0"},"canonical_sha256":"3fbce945eaacffc6b391a3df4e8ee89c5375e15a107eb5b3a8d67a3eab85090e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T08:00:47.454194Z","signature_b64":"myRh+6dyTz9LQ+ZQeUrtIHdovVH/FoRGOceeGoJgaobsqSfMNHbv+0/USJMxreZvnWjyVqqeYquSCYLlIdw5DA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3fbce945eaacffc6b391a3df4e8ee89c5375e15a107eb5b3a8d67a3eab85090e","last_reissued_at":"2026-07-05T08:00:47.453740Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T08:00:47.453740Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2403.17275","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":"2026-07-05T08:00:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"D7S0cL9nXUKrHZ/HirLbS01QnFoEydGdC9rOL8lVsIHonMnk7zs8799Yy7sA9a1sursYjnDTzeDduEzgY2dgCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-16T00:38:10.478906Z"},"content_sha256":"5c3c8d0b7ff7b2662a82808bd13cb495951d611804eaba689b65314b02038904","schema_version":"1.0","event_id":"sha256:5c3c8d0b7ff7b2662a82808bd13cb495951d611804eaba689b65314b02038904"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:H66OSRPKVT74NM4RUPPU5DXITR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"200Gb/s VCSEL transmission using 60m OM4 MMF and KP4 FEC for AI computing clusters","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"eess.SP","authors_text":"Lewei Zhang, Maxim Kuschnerov, Nebojsa Stojanovic, Ruoxu Wang, Stefano Calabr\\`o, Tom Wettlin, Youxi Lin","submitted_at":"2024-03-25T23:42:41Z","abstract_excerpt":"We show a beyond 200Gb/s VCSEL transmission experiment. Results are based on 35GHz VCSEL and advanced DSP. We show an AIR of 245Gb/s PAM-6 back-to-back, and 200Gb/s PAM-4 over 60m OM4 fiber assuming KP4-FEC."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2403.17275","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2403.17275/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":"2026-07-05T08:00:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JnsWOBXPlzVHxP1RFdlGrToNsQX9bjgpqUO/tEF/S9KBFXIYLO1ylg1/lZ7Z8PS/PeMEVko1hgXly5vdW6ncBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-16T00:38:10.479419Z"},"content_sha256":"ae16b45d6234510155bb63b6ac653866ea101cc366f26cdc138f1ea19d886cec","schema_version":"1.0","event_id":"sha256:ae16b45d6234510155bb63b6ac653866ea101cc366f26cdc138f1ea19d886cec"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/H66OSRPKVT74NM4RUPPU5DXITR/bundle.json","state_url":"https://pith.science/pith/H66OSRPKVT74NM4RUPPU5DXITR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/H66OSRPKVT74NM4RUPPU5DXITR/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":"2026-08-16T00:38:10Z","links":{"resolver":"https://pith.science/pith/H66OSRPKVT74NM4RUPPU5DXITR","bundle":"https://pith.science/pith/H66OSRPKVT74NM4RUPPU5DXITR/bundle.json","state":"https://pith.science/pith/H66OSRPKVT74NM4RUPPU5DXITR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/H66OSRPKVT74NM4RUPPU5DXITR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:H66OSRPKVT74NM4RUPPU5DXITR","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":"048563322977aab87efd0651640030c2e1582d94a6eee0382eb3557d7c86df21","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.SP","submitted_at":"2024-03-25T23:42:41Z","title_canon_sha256":"c178b5faf8818897672bba7812986dd21b094b0f00639af969c309ae34bff151"},"schema_version":"1.0","source":{"id":"2403.17275","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2403.17275","created_at":"2026-07-05T08:00:47Z"},{"alias_kind":"arxiv_version","alias_value":"2403.17275v1","created_at":"2026-07-05T08:00:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2403.17275","created_at":"2026-07-05T08:00:47Z"},{"alias_kind":"pith_short_12","alias_value":"H66OSRPKVT74","created_at":"2026-07-05T08:00:47Z"},{"alias_kind":"pith_short_16","alias_value":"H66OSRPKVT74NM4R","created_at":"2026-07-05T08:00:47Z"},{"alias_kind":"pith_short_8","alias_value":"H66OSRPK","created_at":"2026-07-05T08:00:47Z"}],"graph_snapshots":[{"event_id":"sha256:ae16b45d6234510155bb63b6ac653866ea101cc366f26cdc138f1ea19d886cec","target":"graph","created_at":"2026-07-05T08:00:47Z","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/2403.17275/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We show a beyond 200Gb/s VCSEL transmission experiment. Results are based on 35GHz VCSEL and advanced DSP. We show an AIR of 245Gb/s PAM-6 back-to-back, and 200Gb/s PAM-4 over 60m OM4 fiber assuming KP4-FEC.","authors_text":"Lewei Zhang, Maxim Kuschnerov, Nebojsa Stojanovic, Ruoxu Wang, Stefano Calabr\\`o, Tom Wettlin, Youxi Lin","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.SP","submitted_at":"2024-03-25T23:42:41Z","title":"200Gb/s VCSEL transmission using 60m OM4 MMF and KP4 FEC for AI computing clusters"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2403.17275","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":"sha256:5c3c8d0b7ff7b2662a82808bd13cb495951d611804eaba689b65314b02038904","target":"record","created_at":"2026-07-05T08:00:47Z","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":"048563322977aab87efd0651640030c2e1582d94a6eee0382eb3557d7c86df21","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.SP","submitted_at":"2024-03-25T23:42:41Z","title_canon_sha256":"c178b5faf8818897672bba7812986dd21b094b0f00639af969c309ae34bff151"},"schema_version":"1.0","source":{"id":"2403.17275","kind":"arxiv","version":1}},"canonical_sha256":"3fbce945eaacffc6b391a3df4e8ee89c5375e15a107eb5b3a8d67a3eab85090e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3fbce945eaacffc6b391a3df4e8ee89c5375e15a107eb5b3a8d67a3eab85090e","first_computed_at":"2026-07-05T08:00:47.453740Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T08:00:47.453740Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"myRh+6dyTz9LQ+ZQeUrtIHdovVH/FoRGOceeGoJgaobsqSfMNHbv+0/USJMxreZvnWjyVqqeYquSCYLlIdw5DA==","signature_status":"signed_v1","signed_at":"2026-07-05T08:00:47.454194Z","signed_message":"canonical_sha256_bytes"},"source_id":"2403.17275","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5c3c8d0b7ff7b2662a82808bd13cb495951d611804eaba689b65314b02038904","sha256:ae16b45d6234510155bb63b6ac653866ea101cc366f26cdc138f1ea19d886cec"],"state_sha256":"25c69486111eb1fc78da8d2c8a59f9db9b17ac232d4fe4ab179f3aad710de02e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AF78JYIPkD+/tM6uKnfDC8wbIgxmVNaoDAM8ek+I+CyAeZuXovDaT4aCLwg4fGn1qISWWMob8/fbt1sn7ti8Cw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-16T00:38:10.484390Z","bundle_sha256":"5d9fb0b99c43cd30fd6f40f14c63bf0520a24f7c726feaa5b15a3555486c32af"}}