{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:ZF44DEWGP6FACCX6WWQB7UGWBF","short_pith_number":"pith:ZF44DEWG","canonical_record":{"source":{"id":"1807.05412","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2018-07-14T15:39:02Z","cross_cats_sorted":[],"title_canon_sha256":"9bf07645c3cb2ff2990de626afd1c7619bf8a70daf133d533f02b946b42924a5","abstract_canon_sha256":"1a7658dc5c8d43ac04dba37d79c831375b585948ac149a80c1c40bf9e1964bd8"},"schema_version":"1.0"},"canonical_sha256":"c979c192c67f8a010afeb5a01fd0d6094d9c79a8d82a0d46021be78664c1d532","source":{"kind":"arxiv","id":"1807.05412","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.05412","created_at":"2026-05-18T00:10:43Z"},{"alias_kind":"arxiv_version","alias_value":"1807.05412v1","created_at":"2026-05-18T00:10:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.05412","created_at":"2026-05-18T00:10:43Z"},{"alias_kind":"pith_short_12","alias_value":"ZF44DEWGP6FA","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_16","alias_value":"ZF44DEWGP6FACCX6","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_8","alias_value":"ZF44DEWG","created_at":"2026-05-18T12:33:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:ZF44DEWGP6FACCX6WWQB7UGWBF","target":"record","payload":{"canonical_record":{"source":{"id":"1807.05412","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2018-07-14T15:39:02Z","cross_cats_sorted":[],"title_canon_sha256":"9bf07645c3cb2ff2990de626afd1c7619bf8a70daf133d533f02b946b42924a5","abstract_canon_sha256":"1a7658dc5c8d43ac04dba37d79c831375b585948ac149a80c1c40bf9e1964bd8"},"schema_version":"1.0"},"canonical_sha256":"c979c192c67f8a010afeb5a01fd0d6094d9c79a8d82a0d46021be78664c1d532","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:10:43.621548Z","signature_b64":"J7i9phWH4JlHEvS4MfZFY5IOJnI+xItiEHJYiqIOJgcTPiAYMgBBIgb+Gn0xMnCfUfa82grms2+rQ6cBgsDICA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c979c192c67f8a010afeb5a01fd0d6094d9c79a8d82a0d46021be78664c1d532","last_reissued_at":"2026-05-18T00:10:43.621012Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:10:43.621012Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1807.05412","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":"2026-05-18T00:10:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MxyIzTu5NeCly2hSbXn6Rw+f8VTOfSEHhUZ0KfS423mZKrY5/M9eKzlmF4usSdCa3gWD5D54A0wIrUHeQQeBAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T02:43:50.690620Z"},"content_sha256":"868e7fd0a9bfaa9eedf632933b024a4f9193ec664ede46fef3c05ab3aaa25bc7","schema_version":"1.0","event_id":"sha256:868e7fd0a9bfaa9eedf632933b024a4f9193ec664ede46fef3c05ab3aaa25bc7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:ZF44DEWGP6FACCX6WWQB7UGWBF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"ViLDAR - Visible Light Sensing Based Speed Estimation using Vehicle's Headlamps","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"eess.SP","authors_text":"Farshad Miramirkhani, Hisham Abuella, Murat Uysal, Sabit Ekin, Samir Ahmed","submitted_at":"2018-07-14T15:39:02Z","abstract_excerpt":"The introduction of light emitting diodes (LED) in automotive exterior lighting systems provides opportunities to develop viable alternatives to conventional communication and sensing technologies. Most of the advanced driver-assist and autonomous vehicle technologies are based on Radio Detection and Ranging (RADAR) or Light Detection and Ranging (LiDAR) systems that use radio frequency or laser signals, respectively. While reliable and real-time information on vehicle speeds is critical for traffic operations management and autonomous vehicles safety, RADAR or LiDAR systems have some deficien"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.05412","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":""},"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":"2026-05-18T00:10:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/rlKPVqWKWDM+ox1SxyhLGZBpe+fkpLngP/ol1o/CrwurWPKY6WTJyxfc2fwdb5LwzO/5UOnMlvEWG+8gzRiDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T02:43:50.690968Z"},"content_sha256":"351235091eed3f45a2ed99aca8da3944f85a5d2eaff63ac9b76ff93467be8d2e","schema_version":"1.0","event_id":"sha256:351235091eed3f45a2ed99aca8da3944f85a5d2eaff63ac9b76ff93467be8d2e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZF44DEWGP6FACCX6WWQB7UGWBF/bundle.json","state_url":"https://pith.science/pith/ZF44DEWGP6FACCX6WWQB7UGWBF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZF44DEWGP6FACCX6WWQB7UGWBF/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":"2026-06-04T02:43:50Z","links":{"resolver":"https://pith.science/pith/ZF44DEWGP6FACCX6WWQB7UGWBF","bundle":"https://pith.science/pith/ZF44DEWGP6FACCX6WWQB7UGWBF/bundle.json","state":"https://pith.science/pith/ZF44DEWGP6FACCX6WWQB7UGWBF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZF44DEWGP6FACCX6WWQB7UGWBF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:ZF44DEWGP6FACCX6WWQB7UGWBF","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":"1a7658dc5c8d43ac04dba37d79c831375b585948ac149a80c1c40bf9e1964bd8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2018-07-14T15:39:02Z","title_canon_sha256":"9bf07645c3cb2ff2990de626afd1c7619bf8a70daf133d533f02b946b42924a5"},"schema_version":"1.0","source":{"id":"1807.05412","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.05412","created_at":"2026-05-18T00:10:43Z"},{"alias_kind":"arxiv_version","alias_value":"1807.05412v1","created_at":"2026-05-18T00:10:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.05412","created_at":"2026-05-18T00:10:43Z"},{"alias_kind":"pith_short_12","alias_value":"ZF44DEWGP6FA","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_16","alias_value":"ZF44DEWGP6FACCX6","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_8","alias_value":"ZF44DEWG","created_at":"2026-05-18T12:33:07Z"}],"graph_snapshots":[{"event_id":"sha256:351235091eed3f45a2ed99aca8da3944f85a5d2eaff63ac9b76ff93467be8d2e","target":"graph","created_at":"2026-05-18T00:10:43Z","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":"The introduction of light emitting diodes (LED) in automotive exterior lighting systems provides opportunities to develop viable alternatives to conventional communication and sensing technologies. Most of the advanced driver-assist and autonomous vehicle technologies are based on Radio Detection and Ranging (RADAR) or Light Detection and Ranging (LiDAR) systems that use radio frequency or laser signals, respectively. While reliable and real-time information on vehicle speeds is critical for traffic operations management and autonomous vehicles safety, RADAR or LiDAR systems have some deficien","authors_text":"Farshad Miramirkhani, Hisham Abuella, Murat Uysal, Sabit Ekin, Samir Ahmed","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2018-07-14T15:39:02Z","title":"ViLDAR - Visible Light Sensing Based Speed Estimation using Vehicle's Headlamps"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.05412","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":"sha256:868e7fd0a9bfaa9eedf632933b024a4f9193ec664ede46fef3c05ab3aaa25bc7","target":"record","created_at":"2026-05-18T00:10:43Z","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":"1a7658dc5c8d43ac04dba37d79c831375b585948ac149a80c1c40bf9e1964bd8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2018-07-14T15:39:02Z","title_canon_sha256":"9bf07645c3cb2ff2990de626afd1c7619bf8a70daf133d533f02b946b42924a5"},"schema_version":"1.0","source":{"id":"1807.05412","kind":"arxiv","version":1}},"canonical_sha256":"c979c192c67f8a010afeb5a01fd0d6094d9c79a8d82a0d46021be78664c1d532","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c979c192c67f8a010afeb5a01fd0d6094d9c79a8d82a0d46021be78664c1d532","first_computed_at":"2026-05-18T00:10:43.621012Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:10:43.621012Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"J7i9phWH4JlHEvS4MfZFY5IOJnI+xItiEHJYiqIOJgcTPiAYMgBBIgb+Gn0xMnCfUfa82grms2+rQ6cBgsDICA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:10:43.621548Z","signed_message":"canonical_sha256_bytes"},"source_id":"1807.05412","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:868e7fd0a9bfaa9eedf632933b024a4f9193ec664ede46fef3c05ab3aaa25bc7","sha256:351235091eed3f45a2ed99aca8da3944f85a5d2eaff63ac9b76ff93467be8d2e"],"state_sha256":"928b821e4eaa65661daf741752c09253b2c94fbd888ef7370efe609c22e283c1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Af4JlfTtbhkjfKPHEGsZ4zRlgU5Ip13+RJLVeGeszzKbCx8ufCkit+2UV2TCm+iZpS8maoq0eO8Tiy8kS0ZWBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T02:43:50.693012Z","bundle_sha256":"df0b1179d513704ba993fd03855d49ac8a720e7083d5716d321da0d72f19d008"}}