{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:VW5W45KKAQFO2YBIKN3OXMTJ75","short_pith_number":"pith:VW5W45KK","canonical_record":{"source":{"id":"2506.06479","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"physics.geo-ph","submitted_at":"2025-06-06T19:07:01Z","cross_cats_sorted":[],"title_canon_sha256":"add9b8052ccfd195668289848c7e8d49f611043f86ec3efd4123aa7b1eac9ca9","abstract_canon_sha256":"6149953bab58dbf8c3b7c8187224a216e6fcedd89d03bf04427c6cdc1d3fea7b"},"schema_version":"1.0"},"canonical_sha256":"adbb6e754a040aed60285376ebb269ff5b40635a8860d8b8122d5554a4d8cf0e","source":{"kind":"arxiv","id":"2506.06479","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2506.06479","created_at":"2026-07-05T11:17:50Z"},{"alias_kind":"arxiv_version","alias_value":"2506.06479v1","created_at":"2026-07-05T11:17:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2506.06479","created_at":"2026-07-05T11:17:50Z"},{"alias_kind":"pith_short_12","alias_value":"VW5W45KKAQFO","created_at":"2026-07-05T11:17:50Z"},{"alias_kind":"pith_short_16","alias_value":"VW5W45KKAQFO2YBI","created_at":"2026-07-05T11:17:50Z"},{"alias_kind":"pith_short_8","alias_value":"VW5W45KK","created_at":"2026-07-05T11:17:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:VW5W45KKAQFO2YBIKN3OXMTJ75","target":"record","payload":{"canonical_record":{"source":{"id":"2506.06479","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"physics.geo-ph","submitted_at":"2025-06-06T19:07:01Z","cross_cats_sorted":[],"title_canon_sha256":"add9b8052ccfd195668289848c7e8d49f611043f86ec3efd4123aa7b1eac9ca9","abstract_canon_sha256":"6149953bab58dbf8c3b7c8187224a216e6fcedd89d03bf04427c6cdc1d3fea7b"},"schema_version":"1.0"},"canonical_sha256":"adbb6e754a040aed60285376ebb269ff5b40635a8860d8b8122d5554a4d8cf0e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:17:50.875951Z","signature_b64":"/5fgexBVy2eNDDTUwstQEyHYeyxsTpY6+adyhSb7ANdvan5G9v29TKyN1qiGUs2nNlURWxw3QboV+PKQAxZTCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"adbb6e754a040aed60285376ebb269ff5b40635a8860d8b8122d5554a4d8cf0e","last_reissued_at":"2026-07-05T11:17:50.875511Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:17:50.875511Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2506.06479","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":"2026-07-05T11:17:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oCDcmE+CEZJ9wnLEv0bXxf9g1wOrEW8Sd0iIsFvQJgE3Hjs2juJogV8ztKXBMj9brN0ZEZIpwa+d9YwqbTkxBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T17:18:09.336977Z"},"content_sha256":"680a9e7b221097b9f990e5133cb775285ecaab9b7228e5c0c4182102aa6c0bce","schema_version":"1.0","event_id":"sha256:680a9e7b221097b9f990e5133cb775285ecaab9b7228e5c0c4182102aa6c0bce"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:VW5W45KKAQFO2YBIKN3OXMTJ75","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Algorithmic Analysis of GTFS-RT vehicle position accuracy","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","headline":"","cross_cats":[],"primary_cat":"physics.geo-ph","authors_text":"Joshua Wong","submitted_at":"2025-06-06T19:07:01Z","abstract_excerpt":"This paper presents three novel algorithms for calculating geodesic intersections on an ellipsoid. These algorithms are applied in a case study analyzing real-time transit data in California to assess vehicle position drift. The analysis reveals that while certain data anomalies can be corrected, large-scale discrepancies persist. The paper concludes by proposing a set of practical solutions that can be implemented by either data producers or consumers to significantly improve positional accuracy."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2506.06479","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/2506.06479/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":"2026-07-05T11:17:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HH+LOA7fGyq1LZrZEE1YX7uDqplM9lnZwCAFh5LopUnpjLAXrJglep7CHKWEoeqSSHxkwTI7oIAxY6kox+stAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T17:18:09.337861Z"},"content_sha256":"6a2a9dd855bc12775fde3c8582a9ff3963ec1e9be9af4ee4f5551732b1857e0a","schema_version":"1.0","event_id":"sha256:6a2a9dd855bc12775fde3c8582a9ff3963ec1e9be9af4ee4f5551732b1857e0a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VW5W45KKAQFO2YBIKN3OXMTJ75/bundle.json","state_url":"https://pith.science/pith/VW5W45KKAQFO2YBIKN3OXMTJ75/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VW5W45KKAQFO2YBIKN3OXMTJ75/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":"2026-08-10T17:18:09Z","links":{"resolver":"https://pith.science/pith/VW5W45KKAQFO2YBIKN3OXMTJ75","bundle":"https://pith.science/pith/VW5W45KKAQFO2YBIKN3OXMTJ75/bundle.json","state":"https://pith.science/pith/VW5W45KKAQFO2YBIKN3OXMTJ75/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VW5W45KKAQFO2YBIKN3OXMTJ75/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:VW5W45KKAQFO2YBIKN3OXMTJ75","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":"6149953bab58dbf8c3b7c8187224a216e6fcedd89d03bf04427c6cdc1d3fea7b","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"physics.geo-ph","submitted_at":"2025-06-06T19:07:01Z","title_canon_sha256":"add9b8052ccfd195668289848c7e8d49f611043f86ec3efd4123aa7b1eac9ca9"},"schema_version":"1.0","source":{"id":"2506.06479","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2506.06479","created_at":"2026-07-05T11:17:50Z"},{"alias_kind":"arxiv_version","alias_value":"2506.06479v1","created_at":"2026-07-05T11:17:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2506.06479","created_at":"2026-07-05T11:17:50Z"},{"alias_kind":"pith_short_12","alias_value":"VW5W45KKAQFO","created_at":"2026-07-05T11:17:50Z"},{"alias_kind":"pith_short_16","alias_value":"VW5W45KKAQFO2YBI","created_at":"2026-07-05T11:17:50Z"},{"alias_kind":"pith_short_8","alias_value":"VW5W45KK","created_at":"2026-07-05T11:17:50Z"}],"graph_snapshots":[{"event_id":"sha256:6a2a9dd855bc12775fde3c8582a9ff3963ec1e9be9af4ee4f5551732b1857e0a","target":"graph","created_at":"2026-07-05T11:17:50Z","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/2506.06479/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"This paper presents three novel algorithms for calculating geodesic intersections on an ellipsoid. These algorithms are applied in a case study analyzing real-time transit data in California to assess vehicle position drift. The analysis reveals that while certain data anomalies can be corrected, large-scale discrepancies persist. The paper concludes by proposing a set of practical solutions that can be implemented by either data producers or consumers to significantly improve positional accuracy.","authors_text":"Joshua Wong","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"physics.geo-ph","submitted_at":"2025-06-06T19:07:01Z","title":"Algorithmic Analysis of GTFS-RT vehicle position accuracy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2506.06479","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":"sha256:680a9e7b221097b9f990e5133cb775285ecaab9b7228e5c0c4182102aa6c0bce","target":"record","created_at":"2026-07-05T11:17:50Z","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":"6149953bab58dbf8c3b7c8187224a216e6fcedd89d03bf04427c6cdc1d3fea7b","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"physics.geo-ph","submitted_at":"2025-06-06T19:07:01Z","title_canon_sha256":"add9b8052ccfd195668289848c7e8d49f611043f86ec3efd4123aa7b1eac9ca9"},"schema_version":"1.0","source":{"id":"2506.06479","kind":"arxiv","version":1}},"canonical_sha256":"adbb6e754a040aed60285376ebb269ff5b40635a8860d8b8122d5554a4d8cf0e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"adbb6e754a040aed60285376ebb269ff5b40635a8860d8b8122d5554a4d8cf0e","first_computed_at":"2026-07-05T11:17:50.875511Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:17:50.875511Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"/5fgexBVy2eNDDTUwstQEyHYeyxsTpY6+adyhSb7ANdvan5G9v29TKyN1qiGUs2nNlURWxw3QboV+PKQAxZTCA==","signature_status":"signed_v1","signed_at":"2026-07-05T11:17:50.875951Z","signed_message":"canonical_sha256_bytes"},"source_id":"2506.06479","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:680a9e7b221097b9f990e5133cb775285ecaab9b7228e5c0c4182102aa6c0bce","sha256:6a2a9dd855bc12775fde3c8582a9ff3963ec1e9be9af4ee4f5551732b1857e0a"],"state_sha256":"fb49453d8eba43cfc3922b17e95abff1831f1369639e172991ab7b4c9725a742"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uHMfd+F++KlUyp92VQ3WXVZVh2A1o+o6q8ihM26j4s2JwEfBEn7mxuf2JeNH8CwzMeSHDVqsvLeaGwiTqjM3Bw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-10T17:18:09.343471Z","bundle_sha256":"33ed454fdbffc4990fc9cc4c38c8cbab5f24dd0bfc0cb3935461b403df0cc9fe"}}