{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:CPUZB2NHKPLHGBRQDPMKWYGR4S","short_pith_number":"pith:CPUZB2NH","canonical_record":{"source":{"id":"2305.11428","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CR","submitted_at":"2023-05-19T04:56:41Z","cross_cats_sorted":[],"title_canon_sha256":"2e6f098a9f2534c8ca172a6668dda02e5264228d70fe8be479179ac57d92ea8c","abstract_canon_sha256":"ddf747214e1cebf1edd71f8205e67ee80ff085323524a25f0439ab874d423bdd"},"schema_version":"1.0"},"canonical_sha256":"13e990e9a753d67306301bd8ab60d1e4a6f81bed503842fce134feccff25e312","source":{"kind":"arxiv","id":"2305.11428","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2305.11428","created_at":"2026-07-05T06:23:04Z"},{"alias_kind":"arxiv_version","alias_value":"2305.11428v2","created_at":"2026-07-05T06:23:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2305.11428","created_at":"2026-07-05T06:23:04Z"},{"alias_kind":"pith_short_12","alias_value":"CPUZB2NHKPLH","created_at":"2026-07-05T06:23:04Z"},{"alias_kind":"pith_short_16","alias_value":"CPUZB2NHKPLHGBRQ","created_at":"2026-07-05T06:23:04Z"},{"alias_kind":"pith_short_8","alias_value":"CPUZB2NH","created_at":"2026-07-05T06:23:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:CPUZB2NHKPLHGBRQDPMKWYGR4S","target":"record","payload":{"canonical_record":{"source":{"id":"2305.11428","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CR","submitted_at":"2023-05-19T04:56:41Z","cross_cats_sorted":[],"title_canon_sha256":"2e6f098a9f2534c8ca172a6668dda02e5264228d70fe8be479179ac57d92ea8c","abstract_canon_sha256":"ddf747214e1cebf1edd71f8205e67ee80ff085323524a25f0439ab874d423bdd"},"schema_version":"1.0"},"canonical_sha256":"13e990e9a753d67306301bd8ab60d1e4a6f81bed503842fce134feccff25e312","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:23:04.093992Z","signature_b64":"uKSkm/JPp/TtGYB+n3qeeRoVaFPQmbdpm7KsXOoIOUx9dQpyc3DvoLA5voGAaEoyjc9PyUVZGf7dNrEbrwmWDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"13e990e9a753d67306301bd8ab60d1e4a6f81bed503842fce134feccff25e312","last_reissued_at":"2026-07-05T06:23:04.093586Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:23:04.093586Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2305.11428","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":"2026-07-05T06:23:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qKodZCVpUNZyiwKIJeU2mQdKdW1XLKduQQl1dpS93PIe0LxC73R8XdutjMpTwt+Va/VX8M8IfSZqsHF2QHS0DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-25T00:31:08.068167Z"},"content_sha256":"bb95607fbaeffdab878da2f7caa557b55cb899b1bebcbee088988798d4e06464","schema_version":"1.0","event_id":"sha256:bb95607fbaeffdab878da2f7caa557b55cb899b1bebcbee088988798d4e06464"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:CPUZB2NHKPLHGBRQDPMKWYGR4S","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Must the Communication Graph of MPC Protocols be an Expander?","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"cs.CR","authors_text":"Deepesh Data, Elette Boyle, Pavel Hub\\'a\\v{c}ek, Ran Cohen","submitted_at":"2023-05-19T04:56:41Z","abstract_excerpt":"Secure multiparty computation (MPC) on incomplete communication networks has been studied within two primary models: (1) Where a partial network is fixed a priori, and thus corruptions can occur dependent on its structure, and (2) Where edges in the communication graph are determined dynamically as part of the protocol. Whereas a rich literature has succeeded in mapping out the feasibility and limitations of graph structures supporting secure computation in the fixed-graph model (including strong classical lower bounds), these bounds do not apply in the latter dynamic-graph setting, which has "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2305.11428","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2305.11428/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":"2026-07-05T06:23:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"w3wHKa+C1+v+I0ABJlM69+VTisbDzdn0YbfCmjNgiFLN8P4J7J+lEZPIFgD1/O24d9cpEVl5LvyUSUaV1wxpBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-25T00:31:08.068553Z"},"content_sha256":"58a840ef955ec34d151a492af633eae3e93d64d23b0e5d96fbf96b5705274677","schema_version":"1.0","event_id":"sha256:58a840ef955ec34d151a492af633eae3e93d64d23b0e5d96fbf96b5705274677"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CPUZB2NHKPLHGBRQDPMKWYGR4S/bundle.json","state_url":"https://pith.science/pith/CPUZB2NHKPLHGBRQDPMKWYGR4S/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CPUZB2NHKPLHGBRQDPMKWYGR4S/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":"2026-07-25T00:31:08Z","links":{"resolver":"https://pith.science/pith/CPUZB2NHKPLHGBRQDPMKWYGR4S","bundle":"https://pith.science/pith/CPUZB2NHKPLHGBRQDPMKWYGR4S/bundle.json","state":"https://pith.science/pith/CPUZB2NHKPLHGBRQDPMKWYGR4S/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CPUZB2NHKPLHGBRQDPMKWYGR4S/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:CPUZB2NHKPLHGBRQDPMKWYGR4S","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":"ddf747214e1cebf1edd71f8205e67ee80ff085323524a25f0439ab874d423bdd","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CR","submitted_at":"2023-05-19T04:56:41Z","title_canon_sha256":"2e6f098a9f2534c8ca172a6668dda02e5264228d70fe8be479179ac57d92ea8c"},"schema_version":"1.0","source":{"id":"2305.11428","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2305.11428","created_at":"2026-07-05T06:23:04Z"},{"alias_kind":"arxiv_version","alias_value":"2305.11428v2","created_at":"2026-07-05T06:23:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2305.11428","created_at":"2026-07-05T06:23:04Z"},{"alias_kind":"pith_short_12","alias_value":"CPUZB2NHKPLH","created_at":"2026-07-05T06:23:04Z"},{"alias_kind":"pith_short_16","alias_value":"CPUZB2NHKPLHGBRQ","created_at":"2026-07-05T06:23:04Z"},{"alias_kind":"pith_short_8","alias_value":"CPUZB2NH","created_at":"2026-07-05T06:23:04Z"}],"graph_snapshots":[{"event_id":"sha256:58a840ef955ec34d151a492af633eae3e93d64d23b0e5d96fbf96b5705274677","target":"graph","created_at":"2026-07-05T06:23:04Z","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/2305.11428/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Secure multiparty computation (MPC) on incomplete communication networks has been studied within two primary models: (1) Where a partial network is fixed a priori, and thus corruptions can occur dependent on its structure, and (2) Where edges in the communication graph are determined dynamically as part of the protocol. Whereas a rich literature has succeeded in mapping out the feasibility and limitations of graph structures supporting secure computation in the fixed-graph model (including strong classical lower bounds), these bounds do not apply in the latter dynamic-graph setting, which has ","authors_text":"Deepesh Data, Elette Boyle, Pavel Hub\\'a\\v{c}ek, Ran Cohen","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CR","submitted_at":"2023-05-19T04:56:41Z","title":"Must the Communication Graph of MPC Protocols be an Expander?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2305.11428","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:bb95607fbaeffdab878da2f7caa557b55cb899b1bebcbee088988798d4e06464","target":"record","created_at":"2026-07-05T06:23:04Z","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":"ddf747214e1cebf1edd71f8205e67ee80ff085323524a25f0439ab874d423bdd","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CR","submitted_at":"2023-05-19T04:56:41Z","title_canon_sha256":"2e6f098a9f2534c8ca172a6668dda02e5264228d70fe8be479179ac57d92ea8c"},"schema_version":"1.0","source":{"id":"2305.11428","kind":"arxiv","version":2}},"canonical_sha256":"13e990e9a753d67306301bd8ab60d1e4a6f81bed503842fce134feccff25e312","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"13e990e9a753d67306301bd8ab60d1e4a6f81bed503842fce134feccff25e312","first_computed_at":"2026-07-05T06:23:04.093586Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:23:04.093586Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"uKSkm/JPp/TtGYB+n3qeeRoVaFPQmbdpm7KsXOoIOUx9dQpyc3DvoLA5voGAaEoyjc9PyUVZGf7dNrEbrwmWDQ==","signature_status":"signed_v1","signed_at":"2026-07-05T06:23:04.093992Z","signed_message":"canonical_sha256_bytes"},"source_id":"2305.11428","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bb95607fbaeffdab878da2f7caa557b55cb899b1bebcbee088988798d4e06464","sha256:58a840ef955ec34d151a492af633eae3e93d64d23b0e5d96fbf96b5705274677"],"state_sha256":"2de4bd61e55f19f59f04dae33c50ac236880740a70f8052254e9411343d9ed6b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"V2DZSSclCMiEM2RWPK/CDFD3KrFzddftnPMCk45ysyc4J4tmkDGgWdLRyY3jZL5HnJHog6spYPxUudGK1/feBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-25T00:31:08.070832Z","bundle_sha256":"3afe2482ba8bf465e323ac57c4101b38cf2a1b0cc57e6ca8b9977daaf687cec1"}}