{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:GNAHAM6S2RT3OQG5RM5IHXNIWK","short_pith_number":"pith:GNAHAM6S","canonical_record":{"source":{"id":"1908.07952","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2019-08-20T00:45:07Z","cross_cats_sorted":["physics.soc-ph"],"title_canon_sha256":"336af11c71187861775d3138cbf8bd9307e1737d37979dda5671ae228c907dc8","abstract_canon_sha256":"3bad9e881dc33dcd08332b627c33e875e60aceb368a58ceeca94ec43b0784d99"},"schema_version":"1.0"},"canonical_sha256":"33407033d2d467b740dd8b3a83dda8b2b750be153d3271894ba1e6278a7d7440","source":{"kind":"arxiv","id":"1908.07952","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.07952","created_at":"2026-07-04T23:59:34Z"},{"alias_kind":"arxiv_version","alias_value":"1908.07952v1","created_at":"2026-07-04T23:59:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.07952","created_at":"2026-07-04T23:59:34Z"},{"alias_kind":"pith_short_12","alias_value":"GNAHAM6S2RT3","created_at":"2026-07-04T23:59:34Z"},{"alias_kind":"pith_short_16","alias_value":"GNAHAM6S2RT3OQG5","created_at":"2026-07-04T23:59:34Z"},{"alias_kind":"pith_short_8","alias_value":"GNAHAM6S","created_at":"2026-07-04T23:59:34Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:GNAHAM6S2RT3OQG5RM5IHXNIWK","target":"record","payload":{"canonical_record":{"source":{"id":"1908.07952","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2019-08-20T00:45:07Z","cross_cats_sorted":["physics.soc-ph"],"title_canon_sha256":"336af11c71187861775d3138cbf8bd9307e1737d37979dda5671ae228c907dc8","abstract_canon_sha256":"3bad9e881dc33dcd08332b627c33e875e60aceb368a58ceeca94ec43b0784d99"},"schema_version":"1.0"},"canonical_sha256":"33407033d2d467b740dd8b3a83dda8b2b750be153d3271894ba1e6278a7d7440","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T23:59:34.980202Z","signature_b64":"ekBJI1UGARAco8L0C2IdLPXHFBZBdiOf5KDAMxmYJUPj5rTt7cPVAk/fadaUhiWn6wG0MLZ/P496V0Sk1auqAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"33407033d2d467b740dd8b3a83dda8b2b750be153d3271894ba1e6278a7d7440","last_reissued_at":"2026-07-04T23:59:34.979820Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T23:59:34.979820Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1908.07952","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":"2026-07-04T23:59:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OXz/XDtgFfwVZjm5vmqTMRVRZl1ufyLIRatRR6mWDP7+dpfSiHHJwx+HFCI4kK1to123Xdq51pBANuVLiTcbBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-16T22:09:08.379235Z"},"content_sha256":"c8add5acefa7d28bf90716f26a3bdd2f3e04504bb222386efb068690f1972adc","schema_version":"1.0","event_id":"sha256:c8add5acefa7d28bf90716f26a3bdd2f3e04504bb222386efb068690f1972adc"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:GNAHAM6S2RT3OQG5RM5IHXNIWK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Comparative analysis of methods to estimate the tire/road friction coefficient applied to traffic accident reconstruction","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.soc-ph"],"primary_cat":"eess.SP","authors_text":"A. Baena, E. Remolina, G. Enciso, H. Londo\\~no, W. Toresan","submitted_at":"2019-08-20T00:45:07Z","abstract_excerpt":"The measure of the friction factor in the location of the event is very important to get accurate inputs to model the accident, as the friction factor depends on environmental conditions and the dynamics of the event. In some low-middle income countries, accident reconstruction experts, usually don't have the feasibility to acquire expensive equipment as high precision accelerometers; therefore, it is important to identify a low-cost method that provides data quality comparable with high precision equipment. This study presents a comparison of three methods: VC4000PC accelerometer, sensor kine"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.07952","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/1908.07952/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":"2026-07-04T23:59:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+VtIzBwbj7qYH8CMGVTwXmfz6JaHRQ3vnl7kXvkGSQH8lDYq/qHmWq8P0V7BKHueObZilJ5bqcnCGOyVSN3iDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-16T22:09:08.380376Z"},"content_sha256":"af12ccd633c17bde21cf50096625ccb1896f224e52490df66f679fbed286ba1f","schema_version":"1.0","event_id":"sha256:af12ccd633c17bde21cf50096625ccb1896f224e52490df66f679fbed286ba1f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GNAHAM6S2RT3OQG5RM5IHXNIWK/bundle.json","state_url":"https://pith.science/pith/GNAHAM6S2RT3OQG5RM5IHXNIWK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GNAHAM6S2RT3OQG5RM5IHXNIWK/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":"2026-08-16T22:09:08Z","links":{"resolver":"https://pith.science/pith/GNAHAM6S2RT3OQG5RM5IHXNIWK","bundle":"https://pith.science/pith/GNAHAM6S2RT3OQG5RM5IHXNIWK/bundle.json","state":"https://pith.science/pith/GNAHAM6S2RT3OQG5RM5IHXNIWK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GNAHAM6S2RT3OQG5RM5IHXNIWK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:GNAHAM6S2RT3OQG5RM5IHXNIWK","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":"3bad9e881dc33dcd08332b627c33e875e60aceb368a58ceeca94ec43b0784d99","cross_cats_sorted":["physics.soc-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2019-08-20T00:45:07Z","title_canon_sha256":"336af11c71187861775d3138cbf8bd9307e1737d37979dda5671ae228c907dc8"},"schema_version":"1.0","source":{"id":"1908.07952","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.07952","created_at":"2026-07-04T23:59:34Z"},{"alias_kind":"arxiv_version","alias_value":"1908.07952v1","created_at":"2026-07-04T23:59:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.07952","created_at":"2026-07-04T23:59:34Z"},{"alias_kind":"pith_short_12","alias_value":"GNAHAM6S2RT3","created_at":"2026-07-04T23:59:34Z"},{"alias_kind":"pith_short_16","alias_value":"GNAHAM6S2RT3OQG5","created_at":"2026-07-04T23:59:34Z"},{"alias_kind":"pith_short_8","alias_value":"GNAHAM6S","created_at":"2026-07-04T23:59:34Z"}],"graph_snapshots":[{"event_id":"sha256:af12ccd633c17bde21cf50096625ccb1896f224e52490df66f679fbed286ba1f","target":"graph","created_at":"2026-07-04T23:59:34Z","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/1908.07952/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The measure of the friction factor in the location of the event is very important to get accurate inputs to model the accident, as the friction factor depends on environmental conditions and the dynamics of the event. In some low-middle income countries, accident reconstruction experts, usually don't have the feasibility to acquire expensive equipment as high precision accelerometers; therefore, it is important to identify a low-cost method that provides data quality comparable with high precision equipment. This study presents a comparison of three methods: VC4000PC accelerometer, sensor kine","authors_text":"A. Baena, E. Remolina, G. Enciso, H. Londo\\~no, W. Toresan","cross_cats":["physics.soc-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2019-08-20T00:45:07Z","title":"Comparative analysis of methods to estimate the tire/road friction coefficient applied to traffic accident reconstruction"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.07952","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:c8add5acefa7d28bf90716f26a3bdd2f3e04504bb222386efb068690f1972adc","target":"record","created_at":"2026-07-04T23:59:34Z","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":"3bad9e881dc33dcd08332b627c33e875e60aceb368a58ceeca94ec43b0784d99","cross_cats_sorted":["physics.soc-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2019-08-20T00:45:07Z","title_canon_sha256":"336af11c71187861775d3138cbf8bd9307e1737d37979dda5671ae228c907dc8"},"schema_version":"1.0","source":{"id":"1908.07952","kind":"arxiv","version":1}},"canonical_sha256":"33407033d2d467b740dd8b3a83dda8b2b750be153d3271894ba1e6278a7d7440","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"33407033d2d467b740dd8b3a83dda8b2b750be153d3271894ba1e6278a7d7440","first_computed_at":"2026-07-04T23:59:34.979820Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T23:59:34.979820Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ekBJI1UGARAco8L0C2IdLPXHFBZBdiOf5KDAMxmYJUPj5rTt7cPVAk/fadaUhiWn6wG0MLZ/P496V0Sk1auqAA==","signature_status":"signed_v1","signed_at":"2026-07-04T23:59:34.980202Z","signed_message":"canonical_sha256_bytes"},"source_id":"1908.07952","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c8add5acefa7d28bf90716f26a3bdd2f3e04504bb222386efb068690f1972adc","sha256:af12ccd633c17bde21cf50096625ccb1896f224e52490df66f679fbed286ba1f"],"state_sha256":"180cab2750eb658f128b79063dc8ab68a7a532fe2edda925de96c198c094f8e6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UgL7oko6+5ZTda/OhYAn2vIh9gvYugi9wE0vOiOOZAaFvGJCOic14bMDaq3iAipK7rKIXVR9CxdEGQ6GTKs9AA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-16T22:09:08.387745Z","bundle_sha256":"254388fcc102bba6d49ea9ba2198587a68d281d31b952eb9555f597a419bce2d"}}