{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:PF5KPEJR4XH6SCWVEGMYRBFE7X","short_pith_number":"pith:PF5KPEJR","canonical_record":{"source":{"id":"1805.08668","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2018-05-22T15:41:01Z","cross_cats_sorted":["cs.NA"],"title_canon_sha256":"01a39152075ff60f635bd23ebd4c3eb0220ed1b467c3ba8edf0ca3fdeabf97d0","abstract_canon_sha256":"8b02143bb001e92ec06bbd5781ba3bee3cc29d474fab12cee299430a2a59f1dc"},"schema_version":"1.0"},"canonical_sha256":"797aa79131e5cfe90ad521998884a4fde23819569c0725ae2fc558ce8f593c5b","source":{"kind":"arxiv","id":"1805.08668","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.08668","created_at":"2026-06-04T19:11:54Z"},{"alias_kind":"arxiv_version","alias_value":"1805.08668v2","created_at":"2026-06-04T19:11:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.08668","created_at":"2026-06-04T19:11:54Z"},{"alias_kind":"pith_short_12","alias_value":"PF5KPEJR4XH6","created_at":"2026-06-04T19:11:54Z"},{"alias_kind":"pith_short_16","alias_value":"PF5KPEJR4XH6SCWV","created_at":"2026-06-04T19:11:54Z"},{"alias_kind":"pith_short_8","alias_value":"PF5KPEJR","created_at":"2026-06-04T19:11:54Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:PF5KPEJR4XH6SCWVEGMYRBFE7X","target":"record","payload":{"canonical_record":{"source":{"id":"1805.08668","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2018-05-22T15:41:01Z","cross_cats_sorted":["cs.NA"],"title_canon_sha256":"01a39152075ff60f635bd23ebd4c3eb0220ed1b467c3ba8edf0ca3fdeabf97d0","abstract_canon_sha256":"8b02143bb001e92ec06bbd5781ba3bee3cc29d474fab12cee299430a2a59f1dc"},"schema_version":"1.0"},"canonical_sha256":"797aa79131e5cfe90ad521998884a4fde23819569c0725ae2fc558ce8f593c5b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-04T19:11:54.881679Z","signature_b64":"PwR6khGjmEng5RE8c07ikzbxwAApzcvbmV2N8ddZnLXesDTP6dJpyd3eWpgf+2X5/LRZAQEcnt2WkRmMq7a0DA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"797aa79131e5cfe90ad521998884a4fde23819569c0725ae2fc558ce8f593c5b","last_reissued_at":"2026-06-04T19:11:54.881114Z","signature_status":"signed_v1","first_computed_at":"2026-06-04T19:11:54.881114Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1805.08668","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":"2026-06-04T19:11:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7D1eUjFlx5qze9SPNoE+cu87W2eQ8+icezjyjUKilzKB2QBc7RWQowWZOwR1HRNNY1X1isSCvDNt9z8l7MvADA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T01:43:21.789754Z"},"content_sha256":"351f727d377c21f8792cc74811d07562e67855ed2965f7b51cc4787edf211a6f","schema_version":"1.0","event_id":"sha256:351f727d377c21f8792cc74811d07562e67855ed2965f7b51cc4787edf211a6f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:PF5KPEJR4XH6SCWVEGMYRBFE7X","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"An interface-free multi-scale multi-order model for traffic flow","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.NA"],"primary_cat":"math.NA","authors_text":"Elisa Iacomini, Emiliano Cristiani","submitted_at":"2018-05-22T15:41:01Z","abstract_excerpt":"In this paper we present a new kind of model for traffic flow which couples a first-order macroscopic approach with a second-order microscopic approach, avoiding any interface or boundary conditions between them. The Euler-Godunov scheme associated to the model is conservative and it is able to reproduce typical traffic phenomena like stop & go waves."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.08668","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1805.08668/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":"2026-06-04T19:11:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Z/QJr7DSmMxY7UG1jd07Fi50DdnlQFsO/h171psGoS6qft8t99RCpyJZe5TM2ohDtK9C4zQL9WoEYVoUu4A0Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T01:43:21.790499Z"},"content_sha256":"182c9608972740862cee19c73046a7b5ffa10c9fb685e2529c86ad1ee471091c","schema_version":"1.0","event_id":"sha256:182c9608972740862cee19c73046a7b5ffa10c9fb685e2529c86ad1ee471091c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PF5KPEJR4XH6SCWVEGMYRBFE7X/bundle.json","state_url":"https://pith.science/pith/PF5KPEJR4XH6SCWVEGMYRBFE7X/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PF5KPEJR4XH6SCWVEGMYRBFE7X/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":"2026-06-08T01:43:21Z","links":{"resolver":"https://pith.science/pith/PF5KPEJR4XH6SCWVEGMYRBFE7X","bundle":"https://pith.science/pith/PF5KPEJR4XH6SCWVEGMYRBFE7X/bundle.json","state":"https://pith.science/pith/PF5KPEJR4XH6SCWVEGMYRBFE7X/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PF5KPEJR4XH6SCWVEGMYRBFE7X/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:PF5KPEJR4XH6SCWVEGMYRBFE7X","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":"8b02143bb001e92ec06bbd5781ba3bee3cc29d474fab12cee299430a2a59f1dc","cross_cats_sorted":["cs.NA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2018-05-22T15:41:01Z","title_canon_sha256":"01a39152075ff60f635bd23ebd4c3eb0220ed1b467c3ba8edf0ca3fdeabf97d0"},"schema_version":"1.0","source":{"id":"1805.08668","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.08668","created_at":"2026-06-04T19:11:54Z"},{"alias_kind":"arxiv_version","alias_value":"1805.08668v2","created_at":"2026-06-04T19:11:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.08668","created_at":"2026-06-04T19:11:54Z"},{"alias_kind":"pith_short_12","alias_value":"PF5KPEJR4XH6","created_at":"2026-06-04T19:11:54Z"},{"alias_kind":"pith_short_16","alias_value":"PF5KPEJR4XH6SCWV","created_at":"2026-06-04T19:11:54Z"},{"alias_kind":"pith_short_8","alias_value":"PF5KPEJR","created_at":"2026-06-04T19:11:54Z"}],"graph_snapshots":[{"event_id":"sha256:182c9608972740862cee19c73046a7b5ffa10c9fb685e2529c86ad1ee471091c","target":"graph","created_at":"2026-06-04T19:11:54Z","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/1805.08668/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In this paper we present a new kind of model for traffic flow which couples a first-order macroscopic approach with a second-order microscopic approach, avoiding any interface or boundary conditions between them. The Euler-Godunov scheme associated to the model is conservative and it is able to reproduce typical traffic phenomena like stop & go waves.","authors_text":"Elisa Iacomini, Emiliano Cristiani","cross_cats":["cs.NA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2018-05-22T15:41:01Z","title":"An interface-free multi-scale multi-order model for traffic flow"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.08668","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":"sha256:351f727d377c21f8792cc74811d07562e67855ed2965f7b51cc4787edf211a6f","target":"record","created_at":"2026-06-04T19:11:54Z","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":"8b02143bb001e92ec06bbd5781ba3bee3cc29d474fab12cee299430a2a59f1dc","cross_cats_sorted":["cs.NA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2018-05-22T15:41:01Z","title_canon_sha256":"01a39152075ff60f635bd23ebd4c3eb0220ed1b467c3ba8edf0ca3fdeabf97d0"},"schema_version":"1.0","source":{"id":"1805.08668","kind":"arxiv","version":2}},"canonical_sha256":"797aa79131e5cfe90ad521998884a4fde23819569c0725ae2fc558ce8f593c5b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"797aa79131e5cfe90ad521998884a4fde23819569c0725ae2fc558ce8f593c5b","first_computed_at":"2026-06-04T19:11:54.881114Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-04T19:11:54.881114Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"PwR6khGjmEng5RE8c07ikzbxwAApzcvbmV2N8ddZnLXesDTP6dJpyd3eWpgf+2X5/LRZAQEcnt2WkRmMq7a0DA==","signature_status":"signed_v1","signed_at":"2026-06-04T19:11:54.881679Z","signed_message":"canonical_sha256_bytes"},"source_id":"1805.08668","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:351f727d377c21f8792cc74811d07562e67855ed2965f7b51cc4787edf211a6f","sha256:182c9608972740862cee19c73046a7b5ffa10c9fb685e2529c86ad1ee471091c"],"state_sha256":"c2b4b8836ae28eb899cf33fdd1dc420c40c49a55409adac9f6482dd541cffadb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"t5q+qwqBfhz/FzxIOD6zadnHecYEUcCRzGm6t0SvjGJmLZU2cC3sY+hvwYLp17BzDCybU+XuSMLYlsRCQmAoAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-08T01:43:21.794326Z","bundle_sha256":"26430d5456295a8f84cda8a7ff0e8d2cb8f80bac222c675aeb3f840a8f38f535"}}