{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:74CKLIUJ42N7VMJL54FSKODQVC","short_pith_number":"pith:74CKLIUJ","canonical_record":{"source":{"id":"1808.07014","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.soc-ph","submitted_at":"2018-08-17T00:25:23Z","cross_cats_sorted":[],"title_canon_sha256":"74c381b52d7d408dea4af5c7f3634e292338f4fcf99fffbc413f12bffe3c4de3","abstract_canon_sha256":"d28c7a6e125983d52da4cf721155f307ef3c03525d3ff0324270deac396bbd8f"},"schema_version":"1.0"},"canonical_sha256":"ff04a5a289e69bfab12bef0b253870a88606a334857bac71336e4b72ab3bb472","source":{"kind":"arxiv","id":"1808.07014","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.07014","created_at":"2026-05-18T00:07:38Z"},{"alias_kind":"arxiv_version","alias_value":"1808.07014v1","created_at":"2026-05-18T00:07:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.07014","created_at":"2026-05-18T00:07:38Z"},{"alias_kind":"pith_short_12","alias_value":"74CKLIUJ42N7","created_at":"2026-05-18T12:32:11Z"},{"alias_kind":"pith_short_16","alias_value":"74CKLIUJ42N7VMJL","created_at":"2026-05-18T12:32:11Z"},{"alias_kind":"pith_short_8","alias_value":"74CKLIUJ","created_at":"2026-05-18T12:32:11Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:74CKLIUJ42N7VMJL54FSKODQVC","target":"record","payload":{"canonical_record":{"source":{"id":"1808.07014","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.soc-ph","submitted_at":"2018-08-17T00:25:23Z","cross_cats_sorted":[],"title_canon_sha256":"74c381b52d7d408dea4af5c7f3634e292338f4fcf99fffbc413f12bffe3c4de3","abstract_canon_sha256":"d28c7a6e125983d52da4cf721155f307ef3c03525d3ff0324270deac396bbd8f"},"schema_version":"1.0"},"canonical_sha256":"ff04a5a289e69bfab12bef0b253870a88606a334857bac71336e4b72ab3bb472","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:07:38.384734Z","signature_b64":"IklN+/g1Y2vr9nBqKPAmZEqdm7NYW8aJRGb4t2xEG3TO9IFmxH+elGadPMVFgdTDU2TFr54bRJTBszdp2CYnAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ff04a5a289e69bfab12bef0b253870a88606a334857bac71336e4b72ab3bb472","last_reissued_at":"2026-05-18T00:07:38.384038Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:07:38.384038Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1808.07014","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":"2026-05-18T00:07:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iJVQc8o4/KIWZ6zpt3iJB1UG/1dojsCBxf37tT2ervbdXx7sl8PAD2sqmNxp9WwSypB+McAXnGwYtkTlqX6PBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T03:10:51.670305Z"},"content_sha256":"79c0a729e42e685fe21f6007de2d9a4009e7f981d8f4db0d24f4f36d8ab5f0f5","schema_version":"1.0","event_id":"sha256:79c0a729e42e685fe21f6007de2d9a4009e7f981d8f4db0d24f4f36d8ab5f0f5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:74CKLIUJ42N7VMJL54FSKODQVC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Analysis of Volatility in Driving Regimes Extracted from Basic Safety Messages Transmitted Between Connected Vehicles","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.soc-ph","authors_text":"Asad Khattak, Behram Wali","submitted_at":"2018-08-17T00:25:23Z","abstract_excerpt":"Driving volatility captures the extent of speed variations when a vehicle is being driven. Extreme longitudinal variations signify hard acceleration or braking. Warnings and alerts given to drivers can reduce such volatility potentially improving safety, energy use, and emissions. This study develops a fundamental understanding of instantaneous driving decisions, needed for hazard anticipation and notification systems, and distinguishes normal from anomalous driving. In this study, driving task is divided into distinct yet unobserved regimes. The research issue is to characterize and quantify "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.07014","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":"2026-05-18T00:07:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+v1FQ6+df2dkszaGeJN8R8PeLiTlO+TjxTIWmntD7WZP24MAqD7SUGVX3ASvfCcevCfdcZTeL4Y+jTJGeVwKDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T03:10:51.670931Z"},"content_sha256":"6b8e5655cf37f0ff2bb77715644321705e56717a162b43476f9732c1694f6679","schema_version":"1.0","event_id":"sha256:6b8e5655cf37f0ff2bb77715644321705e56717a162b43476f9732c1694f6679"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/74CKLIUJ42N7VMJL54FSKODQVC/bundle.json","state_url":"https://pith.science/pith/74CKLIUJ42N7VMJL54FSKODQVC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/74CKLIUJ42N7VMJL54FSKODQVC/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":"2026-06-10T03:10:51Z","links":{"resolver":"https://pith.science/pith/74CKLIUJ42N7VMJL54FSKODQVC","bundle":"https://pith.science/pith/74CKLIUJ42N7VMJL54FSKODQVC/bundle.json","state":"https://pith.science/pith/74CKLIUJ42N7VMJL54FSKODQVC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/74CKLIUJ42N7VMJL54FSKODQVC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:74CKLIUJ42N7VMJL54FSKODQVC","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":"d28c7a6e125983d52da4cf721155f307ef3c03525d3ff0324270deac396bbd8f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.soc-ph","submitted_at":"2018-08-17T00:25:23Z","title_canon_sha256":"74c381b52d7d408dea4af5c7f3634e292338f4fcf99fffbc413f12bffe3c4de3"},"schema_version":"1.0","source":{"id":"1808.07014","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.07014","created_at":"2026-05-18T00:07:38Z"},{"alias_kind":"arxiv_version","alias_value":"1808.07014v1","created_at":"2026-05-18T00:07:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.07014","created_at":"2026-05-18T00:07:38Z"},{"alias_kind":"pith_short_12","alias_value":"74CKLIUJ42N7","created_at":"2026-05-18T12:32:11Z"},{"alias_kind":"pith_short_16","alias_value":"74CKLIUJ42N7VMJL","created_at":"2026-05-18T12:32:11Z"},{"alias_kind":"pith_short_8","alias_value":"74CKLIUJ","created_at":"2026-05-18T12:32:11Z"}],"graph_snapshots":[{"event_id":"sha256:6b8e5655cf37f0ff2bb77715644321705e56717a162b43476f9732c1694f6679","target":"graph","created_at":"2026-05-18T00:07:38Z","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":"Driving volatility captures the extent of speed variations when a vehicle is being driven. Extreme longitudinal variations signify hard acceleration or braking. Warnings and alerts given to drivers can reduce such volatility potentially improving safety, energy use, and emissions. This study develops a fundamental understanding of instantaneous driving decisions, needed for hazard anticipation and notification systems, and distinguishes normal from anomalous driving. In this study, driving task is divided into distinct yet unobserved regimes. The research issue is to characterize and quantify ","authors_text":"Asad Khattak, Behram Wali","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.soc-ph","submitted_at":"2018-08-17T00:25:23Z","title":"Analysis of Volatility in Driving Regimes Extracted from Basic Safety Messages Transmitted Between Connected Vehicles"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.07014","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":"sha256:79c0a729e42e685fe21f6007de2d9a4009e7f981d8f4db0d24f4f36d8ab5f0f5","target":"record","created_at":"2026-05-18T00:07:38Z","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":"d28c7a6e125983d52da4cf721155f307ef3c03525d3ff0324270deac396bbd8f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.soc-ph","submitted_at":"2018-08-17T00:25:23Z","title_canon_sha256":"74c381b52d7d408dea4af5c7f3634e292338f4fcf99fffbc413f12bffe3c4de3"},"schema_version":"1.0","source":{"id":"1808.07014","kind":"arxiv","version":1}},"canonical_sha256":"ff04a5a289e69bfab12bef0b253870a88606a334857bac71336e4b72ab3bb472","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ff04a5a289e69bfab12bef0b253870a88606a334857bac71336e4b72ab3bb472","first_computed_at":"2026-05-18T00:07:38.384038Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:07:38.384038Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"IklN+/g1Y2vr9nBqKPAmZEqdm7NYW8aJRGb4t2xEG3TO9IFmxH+elGadPMVFgdTDU2TFr54bRJTBszdp2CYnAA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:07:38.384734Z","signed_message":"canonical_sha256_bytes"},"source_id":"1808.07014","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:79c0a729e42e685fe21f6007de2d9a4009e7f981d8f4db0d24f4f36d8ab5f0f5","sha256:6b8e5655cf37f0ff2bb77715644321705e56717a162b43476f9732c1694f6679"],"state_sha256":"53256d4e75e3659c459e2cd91e9fa3906b51cd54ed0913dc96275f572020dfda"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KUXzUXFLiNHyinp6/G42gdA3C6GQr+gzA9CV6gb47FFLAdOUiRTJKf2FKFc/QP0dHFWHEurvdG0aKHLwGsA9Bw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-10T03:10:51.674584Z","bundle_sha256":"765a63a622dc47fb80de2d82c5b2ed06b2430261518fbffc49561cbec8142353"}}