{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:CICRLLH4TCAFVXV5HIWUZWMVGV","short_pith_number":"pith:CICRLLH4","canonical_record":{"source":{"id":"2308.12620","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2023-08-24T07:50:31Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"b22ad34de303b0a80ac1d4919b0aa36d6f47bb5cbfc94878e5f09438db987030","abstract_canon_sha256":"04b52f0e7f882e9447c6d263a1eeb4edde5913edbb2a92365e6371ec970e753d"},"schema_version":"1.0"},"canonical_sha256":"120515acfc98805adebd3a2d4cd995355d6908e51dfa20f2e335369dd8f4e79a","source":{"kind":"arxiv","id":"2308.12620","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2308.12620","created_at":"2026-07-05T07:16:45Z"},{"alias_kind":"arxiv_version","alias_value":"2308.12620v1","created_at":"2026-07-05T07:16:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2308.12620","created_at":"2026-07-05T07:16:45Z"},{"alias_kind":"pith_short_12","alias_value":"CICRLLH4TCAF","created_at":"2026-07-05T07:16:45Z"},{"alias_kind":"pith_short_16","alias_value":"CICRLLH4TCAFVXV5","created_at":"2026-07-05T07:16:45Z"},{"alias_kind":"pith_short_8","alias_value":"CICRLLH4","created_at":"2026-07-05T07:16:45Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:CICRLLH4TCAFVXV5HIWUZWMVGV","target":"record","payload":{"canonical_record":{"source":{"id":"2308.12620","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2023-08-24T07:50:31Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"b22ad34de303b0a80ac1d4919b0aa36d6f47bb5cbfc94878e5f09438db987030","abstract_canon_sha256":"04b52f0e7f882e9447c6d263a1eeb4edde5913edbb2a92365e6371ec970e753d"},"schema_version":"1.0"},"canonical_sha256":"120515acfc98805adebd3a2d4cd995355d6908e51dfa20f2e335369dd8f4e79a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T07:16:45.394482Z","signature_b64":"YtqoeksVZSiPDQh820t/3Fthw9CqXIgvvGycFdssNoMx3owgJY5+D2do4uIxfljtcbXJ1X2cSTkQvR7eKKKXBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"120515acfc98805adebd3a2d4cd995355d6908e51dfa20f2e335369dd8f4e79a","last_reissued_at":"2026-07-05T07:16:45.394018Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T07:16:45.394018Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2308.12620","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":"2026-07-05T07:16:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Qh7mf2v8Tk28Vz2LT6sVd8k7nCgiEjfylcxG8vUZiwWvZu6SVS1up1LXwU9sQ239Bi8/sGCzBx5QVoiMwix+Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-01T09:42:49.095898Z"},"content_sha256":"fb22826caafb1657e10737a7ae962806fecb80e34975d6b4469c47b11745a028","schema_version":"1.0","event_id":"sha256:fb22826caafb1657e10737a7ae962806fecb80e34975d6b4469c47b11745a028"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:CICRLLH4TCAFVXV5HIWUZWMVGV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Modeling for heterogeneous oxidative aging of polymers using coarse-grained molecular dynamics","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"cond-mat.soft","authors_text":"Takashi Uneyama, Takato Ishida, Yuichi Masubuchi, Yuya Doi","submitted_at":"2023-08-24T07:50:31Z","abstract_excerpt":"This study presents a coarse-grained molecular dynamics simulation model to investigate the process of oxidative aging in polymers. The chemical aging effect is attributed to the auto-oxidation mechanism, which is initiated by radicals, leading to the chain scission and crosslinking of polymer chains. In this study, we integrate a thermal oxidation kinetic model in the oxygen excess regime into the Kremer-Grest model, thereby enabling a reactive coarse-grained molecular dynamics simulation to capture the process of oxidative degradation. Our simulation reveals that when the timescale of the ch"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2308.12620","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/2308.12620/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":"2026-07-05T07:16:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"O8C857K8xXgk8YFqoPb35cD7KW832CjZEhbnka9pl7JqaDVpNj1PAvfBe32df9hNMgGsyaUVMxMhNb8syAQhDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-01T09:42:49.096609Z"},"content_sha256":"647b235216649521aa50cc6d301701e2572a21d0357570112e8ab4724ce6ad97","schema_version":"1.0","event_id":"sha256:647b235216649521aa50cc6d301701e2572a21d0357570112e8ab4724ce6ad97"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CICRLLH4TCAFVXV5HIWUZWMVGV/bundle.json","state_url":"https://pith.science/pith/CICRLLH4TCAFVXV5HIWUZWMVGV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CICRLLH4TCAFVXV5HIWUZWMVGV/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":"2026-08-01T09:42:49Z","links":{"resolver":"https://pith.science/pith/CICRLLH4TCAFVXV5HIWUZWMVGV","bundle":"https://pith.science/pith/CICRLLH4TCAFVXV5HIWUZWMVGV/bundle.json","state":"https://pith.science/pith/CICRLLH4TCAFVXV5HIWUZWMVGV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CICRLLH4TCAFVXV5HIWUZWMVGV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:CICRLLH4TCAFVXV5HIWUZWMVGV","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":"04b52f0e7f882e9447c6d263a1eeb4edde5913edbb2a92365e6371ec970e753d","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2023-08-24T07:50:31Z","title_canon_sha256":"b22ad34de303b0a80ac1d4919b0aa36d6f47bb5cbfc94878e5f09438db987030"},"schema_version":"1.0","source":{"id":"2308.12620","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2308.12620","created_at":"2026-07-05T07:16:45Z"},{"alias_kind":"arxiv_version","alias_value":"2308.12620v1","created_at":"2026-07-05T07:16:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2308.12620","created_at":"2026-07-05T07:16:45Z"},{"alias_kind":"pith_short_12","alias_value":"CICRLLH4TCAF","created_at":"2026-07-05T07:16:45Z"},{"alias_kind":"pith_short_16","alias_value":"CICRLLH4TCAFVXV5","created_at":"2026-07-05T07:16:45Z"},{"alias_kind":"pith_short_8","alias_value":"CICRLLH4","created_at":"2026-07-05T07:16:45Z"}],"graph_snapshots":[{"event_id":"sha256:647b235216649521aa50cc6d301701e2572a21d0357570112e8ab4724ce6ad97","target":"graph","created_at":"2026-07-05T07:16:45Z","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/2308.12620/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"This study presents a coarse-grained molecular dynamics simulation model to investigate the process of oxidative aging in polymers. The chemical aging effect is attributed to the auto-oxidation mechanism, which is initiated by radicals, leading to the chain scission and crosslinking of polymer chains. In this study, we integrate a thermal oxidation kinetic model in the oxygen excess regime into the Kremer-Grest model, thereby enabling a reactive coarse-grained molecular dynamics simulation to capture the process of oxidative degradation. Our simulation reveals that when the timescale of the ch","authors_text":"Takashi Uneyama, Takato Ishida, Yuichi Masubuchi, Yuya Doi","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2023-08-24T07:50:31Z","title":"Modeling for heterogeneous oxidative aging of polymers using coarse-grained molecular dynamics"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2308.12620","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:fb22826caafb1657e10737a7ae962806fecb80e34975d6b4469c47b11745a028","target":"record","created_at":"2026-07-05T07:16:45Z","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":"04b52f0e7f882e9447c6d263a1eeb4edde5913edbb2a92365e6371ec970e753d","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2023-08-24T07:50:31Z","title_canon_sha256":"b22ad34de303b0a80ac1d4919b0aa36d6f47bb5cbfc94878e5f09438db987030"},"schema_version":"1.0","source":{"id":"2308.12620","kind":"arxiv","version":1}},"canonical_sha256":"120515acfc98805adebd3a2d4cd995355d6908e51dfa20f2e335369dd8f4e79a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"120515acfc98805adebd3a2d4cd995355d6908e51dfa20f2e335369dd8f4e79a","first_computed_at":"2026-07-05T07:16:45.394018Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T07:16:45.394018Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"YtqoeksVZSiPDQh820t/3Fthw9CqXIgvvGycFdssNoMx3owgJY5+D2do4uIxfljtcbXJ1X2cSTkQvR7eKKKXBw==","signature_status":"signed_v1","signed_at":"2026-07-05T07:16:45.394482Z","signed_message":"canonical_sha256_bytes"},"source_id":"2308.12620","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fb22826caafb1657e10737a7ae962806fecb80e34975d6b4469c47b11745a028","sha256:647b235216649521aa50cc6d301701e2572a21d0357570112e8ab4724ce6ad97"],"state_sha256":"f51a092f6d91a989811a4ab55d2cb071e1fb1f20fc9da3e51a54b089233e955a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QvYg0mh3G/hojx5biLePh+F+N+l8oQdiGsyh6bsjMm6qJRvC4ZSmonHmoO4owlNnEKS/wp9SIGWw2gxiqBKzAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-01T09:42:49.100833Z","bundle_sha256":"ab661d11b63adf9cb318281be2c0f0d4f3973989eb824005ae233f79b836db34"}}