{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:F3K6HCJNV6OVWFWQJXA5UX63SC","short_pith_number":"pith:F3K6HCJN","canonical_record":{"source":{"id":"1709.05883","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2017-09-18T12:06:53Z","cross_cats_sorted":["math.IT"],"title_canon_sha256":"6168b12c019c21d96700643ca0a7cf02639f131633f97b84f023153c991a301f","abstract_canon_sha256":"c9874a3f94f7d84d600d6972415b43af48cd87a9a4b3564b56c947f0adfdb331"},"schema_version":"1.0"},"canonical_sha256":"2ed5e3892daf9d5b16d04dc1da5fdb909dd3f474eb08b35114c4c3e2c0410e0f","source":{"kind":"arxiv","id":"1709.05883","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1709.05883","created_at":"2026-05-18T00:31:11Z"},{"alias_kind":"arxiv_version","alias_value":"1709.05883v2","created_at":"2026-05-18T00:31:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1709.05883","created_at":"2026-05-18T00:31:11Z"},{"alias_kind":"pith_short_12","alias_value":"F3K6HCJNV6OV","created_at":"2026-05-18T12:31:15Z"},{"alias_kind":"pith_short_16","alias_value":"F3K6HCJNV6OVWFWQ","created_at":"2026-05-18T12:31:15Z"},{"alias_kind":"pith_short_8","alias_value":"F3K6HCJN","created_at":"2026-05-18T12:31:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:F3K6HCJNV6OVWFWQJXA5UX63SC","target":"record","payload":{"canonical_record":{"source":{"id":"1709.05883","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2017-09-18T12:06:53Z","cross_cats_sorted":["math.IT"],"title_canon_sha256":"6168b12c019c21d96700643ca0a7cf02639f131633f97b84f023153c991a301f","abstract_canon_sha256":"c9874a3f94f7d84d600d6972415b43af48cd87a9a4b3564b56c947f0adfdb331"},"schema_version":"1.0"},"canonical_sha256":"2ed5e3892daf9d5b16d04dc1da5fdb909dd3f474eb08b35114c4c3e2c0410e0f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:31:11.568086Z","signature_b64":"lafV+hJqBAEtqQxYB1wIWqIye5TTL+1I9iBQ66FiA0LInTIp7g33Rw0iMeFbHn1CSxA/nmB26g2VJt1aAdkjCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2ed5e3892daf9d5b16d04dc1da5fdb909dd3f474eb08b35114c4c3e2c0410e0f","last_reissued_at":"2026-05-18T00:31:11.567281Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:31:11.567281Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1709.05883","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":"2026-05-18T00:31:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hKUlacrybGGyOHhcDzyZ2tl35y4NURJn0SDihgGUjLjR006lF4Kfyi4I23MsKe2F1yv9ObWAquil+bT1fR84Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-20T00:11:44.482249Z"},"content_sha256":"2966fdc319b75ce0b5006314e75280e2d15fb7ac848e0570074a9bbee295c96d","schema_version":"1.0","event_id":"sha256:2966fdc319b75ce0b5006314e75280e2d15fb7ac848e0570074a9bbee295c96d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:F3K6HCJNV6OVWFWQJXA5UX63SC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Rapid Fading Due to Human Blockage in Pedestrian Crowds at 5G Millimeter-Wave Frequencies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.IT"],"primary_cat":"cs.IT","authors_text":"George R. MacCartney Jr., Sundeep Rangan, Theodore S. Rappaport","submitted_at":"2017-09-18T12:06:53Z","abstract_excerpt":"Rapidly fading channels caused by pedestrians in dense urban environments will have a significant impact on millimeter-wave (mmWave) communications systems that employ electrically-steerable and narrow beamwidth antenna arrays. A peer-to-peer (P2P) measurement campaign was conducted with 7-degree, 15-degree, and 60-degree half-power beamwidth (HPBW) antenna pairs at 73.5 GHz and with 1 GHz of RF null-to-null bandwidth in a heavily populated open square scenario in Brooklyn, New York, to study blockage events caused by typical pedestrian traffic. Antenna beamwidths that range approximately an o"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.05883","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":"2026-05-18T00:31:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3fxx1w+EGHFEmmnDW0nn/CTUHQkyfI9ZdQFuTqgCpmu6fa7I33IZr1dzLCkpG9o7A4G76RHPThw88H0oZ7vlBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-20T00:11:44.482611Z"},"content_sha256":"bda3b4d4bfdca436f4800ee3332ba801e67d574a0ea75258fc8f5a7b091a5016","schema_version":"1.0","event_id":"sha256:bda3b4d4bfdca436f4800ee3332ba801e67d574a0ea75258fc8f5a7b091a5016"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/F3K6HCJNV6OVWFWQJXA5UX63SC/bundle.json","state_url":"https://pith.science/pith/F3K6HCJNV6OVWFWQJXA5UX63SC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/F3K6HCJNV6OVWFWQJXA5UX63SC/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":"2026-06-20T00:11:44Z","links":{"resolver":"https://pith.science/pith/F3K6HCJNV6OVWFWQJXA5UX63SC","bundle":"https://pith.science/pith/F3K6HCJNV6OVWFWQJXA5UX63SC/bundle.json","state":"https://pith.science/pith/F3K6HCJNV6OVWFWQJXA5UX63SC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/F3K6HCJNV6OVWFWQJXA5UX63SC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:F3K6HCJNV6OVWFWQJXA5UX63SC","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":"c9874a3f94f7d84d600d6972415b43af48cd87a9a4b3564b56c947f0adfdb331","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2017-09-18T12:06:53Z","title_canon_sha256":"6168b12c019c21d96700643ca0a7cf02639f131633f97b84f023153c991a301f"},"schema_version":"1.0","source":{"id":"1709.05883","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1709.05883","created_at":"2026-05-18T00:31:11Z"},{"alias_kind":"arxiv_version","alias_value":"1709.05883v2","created_at":"2026-05-18T00:31:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1709.05883","created_at":"2026-05-18T00:31:11Z"},{"alias_kind":"pith_short_12","alias_value":"F3K6HCJNV6OV","created_at":"2026-05-18T12:31:15Z"},{"alias_kind":"pith_short_16","alias_value":"F3K6HCJNV6OVWFWQ","created_at":"2026-05-18T12:31:15Z"},{"alias_kind":"pith_short_8","alias_value":"F3K6HCJN","created_at":"2026-05-18T12:31:15Z"}],"graph_snapshots":[{"event_id":"sha256:bda3b4d4bfdca436f4800ee3332ba801e67d574a0ea75258fc8f5a7b091a5016","target":"graph","created_at":"2026-05-18T00:31:11Z","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":"Rapidly fading channels caused by pedestrians in dense urban environments will have a significant impact on millimeter-wave (mmWave) communications systems that employ electrically-steerable and narrow beamwidth antenna arrays. A peer-to-peer (P2P) measurement campaign was conducted with 7-degree, 15-degree, and 60-degree half-power beamwidth (HPBW) antenna pairs at 73.5 GHz and with 1 GHz of RF null-to-null bandwidth in a heavily populated open square scenario in Brooklyn, New York, to study blockage events caused by typical pedestrian traffic. Antenna beamwidths that range approximately an o","authors_text":"George R. MacCartney Jr., Sundeep Rangan, Theodore S. Rappaport","cross_cats":["math.IT"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2017-09-18T12:06:53Z","title":"Rapid Fading Due to Human Blockage in Pedestrian Crowds at 5G Millimeter-Wave Frequencies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.05883","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":"sha256:2966fdc319b75ce0b5006314e75280e2d15fb7ac848e0570074a9bbee295c96d","target":"record","created_at":"2026-05-18T00:31:11Z","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":"c9874a3f94f7d84d600d6972415b43af48cd87a9a4b3564b56c947f0adfdb331","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2017-09-18T12:06:53Z","title_canon_sha256":"6168b12c019c21d96700643ca0a7cf02639f131633f97b84f023153c991a301f"},"schema_version":"1.0","source":{"id":"1709.05883","kind":"arxiv","version":2}},"canonical_sha256":"2ed5e3892daf9d5b16d04dc1da5fdb909dd3f474eb08b35114c4c3e2c0410e0f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2ed5e3892daf9d5b16d04dc1da5fdb909dd3f474eb08b35114c4c3e2c0410e0f","first_computed_at":"2026-05-18T00:31:11.567281Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:31:11.567281Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"lafV+hJqBAEtqQxYB1wIWqIye5TTL+1I9iBQ66FiA0LInTIp7g33Rw0iMeFbHn1CSxA/nmB26g2VJt1aAdkjCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:31:11.568086Z","signed_message":"canonical_sha256_bytes"},"source_id":"1709.05883","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2966fdc319b75ce0b5006314e75280e2d15fb7ac848e0570074a9bbee295c96d","sha256:bda3b4d4bfdca436f4800ee3332ba801e67d574a0ea75258fc8f5a7b091a5016"],"state_sha256":"2f7f909a99b627cbb16c8b07fc17473279d52dc17659b89030fbc8d6f45b4ea9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BYijh7hToe8c5crMWaeXGEbcvoXKwnyffPZOOgPWTk5OXyQru52O+Tb3/czHte8oBABuPEjLKW8ohyGieuxEAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-20T00:11:44.484517Z","bundle_sha256":"f22f9dff5814858659cf229e116bac0f9d9389c244883034f3eb84a59163454d"}}