{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:D4NQYTIMTZOJ7IEG3WHD6IUFCV","short_pith_number":"pith:D4NQYTIM","canonical_record":{"source":{"id":"1307.2466","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-07-09T14:13:40Z","cross_cats_sorted":[],"title_canon_sha256":"d30cbd15bb2860b0d9b62e1f57a8a3cbe7d51c0a85e96c5f3e848c5e3245efc2","abstract_canon_sha256":"fbc78ee23c3fea1e67ebc414cd5ee5ff0faeef5e36bc41038116c11399109d43"},"schema_version":"1.0"},"canonical_sha256":"1f1b0c4d0c9e5c9fa086dd8e3f22851570324797d4fe7d5d61a33ab32c714239","source":{"kind":"arxiv","id":"1307.2466","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1307.2466","created_at":"2026-05-18T01:48:52Z"},{"alias_kind":"arxiv_version","alias_value":"1307.2466v2","created_at":"2026-05-18T01:48:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1307.2466","created_at":"2026-05-18T01:48:52Z"},{"alias_kind":"pith_short_12","alias_value":"D4NQYTIMTZOJ","created_at":"2026-05-18T12:27:40Z"},{"alias_kind":"pith_short_16","alias_value":"D4NQYTIMTZOJ7IEG","created_at":"2026-05-18T12:27:40Z"},{"alias_kind":"pith_short_8","alias_value":"D4NQYTIM","created_at":"2026-05-18T12:27:40Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:D4NQYTIMTZOJ7IEG3WHD6IUFCV","target":"record","payload":{"canonical_record":{"source":{"id":"1307.2466","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-07-09T14:13:40Z","cross_cats_sorted":[],"title_canon_sha256":"d30cbd15bb2860b0d9b62e1f57a8a3cbe7d51c0a85e96c5f3e848c5e3245efc2","abstract_canon_sha256":"fbc78ee23c3fea1e67ebc414cd5ee5ff0faeef5e36bc41038116c11399109d43"},"schema_version":"1.0"},"canonical_sha256":"1f1b0c4d0c9e5c9fa086dd8e3f22851570324797d4fe7d5d61a33ab32c714239","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:48:52.880627Z","signature_b64":"H8Wrb87Bz+pW2vmQBdww/awwX+gTaEMbsGXM1uwCAJiDuAjHU8YBsKQ41DYby0Q4BDJvUWpIUBdmX5lI3MWSDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1f1b0c4d0c9e5c9fa086dd8e3f22851570324797d4fe7d5d61a33ab32c714239","last_reissued_at":"2026-05-18T01:48:52.879866Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:48:52.879866Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1307.2466","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":"2026-05-18T01:48:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"apvysTKiZmiRhCwnaoEdvd/my8ahFIvzO21W4fAZU5tVORR0HgXaG4adpIycy/VyQpry5mPTIK2bflUNqg23Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-23T04:50:28.894840Z"},"content_sha256":"ab745ce18dc8ed0b9bcc76146f410103ff30748899fba08827923c812a70129b","schema_version":"1.0","event_id":"sha256:ab745ce18dc8ed0b9bcc76146f410103ff30748899fba08827923c812a70129b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:D4NQYTIMTZOJ7IEG3WHD6IUFCV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Tearing of Free-Standing Graphene","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"Maria J. B. Moura, Michael Marder","submitted_at":"2013-07-09T14:13:40Z","abstract_excerpt":"We examine the fracture mechanics of tearing graphene. We present a molecular dynamics simulation of the propagation of cracks in clamped, free-standing graphene as a function of the out-of-plane force. The geometry is motivated by experimental configurations that expose graphene sheets to out-of-plane forces, such as back-gate voltage. We establish the geometry and basic energetics of failure, and obtain approximate analytical expressions for critical crack lengths and forces. We also propose a method to obtain graphene's toughness. We observe that the cracks' path and the edge structure prod"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.2466","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":""},"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":"2026-05-18T01:48:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kEgkSIirJEwqN7b2hdDBErxPg8+HYDoQkyD4OCY/ngdn9vDiGnUtAYkbo4krY0DtVdqWaYrCUsNvFnyCG5eaAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-23T04:50:28.895174Z"},"content_sha256":"757b4a47988dc27b9765cd1ebd19a7dbf866b0ef86cf01a1792646e319840da4","schema_version":"1.0","event_id":"sha256:757b4a47988dc27b9765cd1ebd19a7dbf866b0ef86cf01a1792646e319840da4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/D4NQYTIMTZOJ7IEG3WHD6IUFCV/bundle.json","state_url":"https://pith.science/pith/D4NQYTIMTZOJ7IEG3WHD6IUFCV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/D4NQYTIMTZOJ7IEG3WHD6IUFCV/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":"2026-06-23T04:50:28Z","links":{"resolver":"https://pith.science/pith/D4NQYTIMTZOJ7IEG3WHD6IUFCV","bundle":"https://pith.science/pith/D4NQYTIMTZOJ7IEG3WHD6IUFCV/bundle.json","state":"https://pith.science/pith/D4NQYTIMTZOJ7IEG3WHD6IUFCV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/D4NQYTIMTZOJ7IEG3WHD6IUFCV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:D4NQYTIMTZOJ7IEG3WHD6IUFCV","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":"fbc78ee23c3fea1e67ebc414cd5ee5ff0faeef5e36bc41038116c11399109d43","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-07-09T14:13:40Z","title_canon_sha256":"d30cbd15bb2860b0d9b62e1f57a8a3cbe7d51c0a85e96c5f3e848c5e3245efc2"},"schema_version":"1.0","source":{"id":"1307.2466","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1307.2466","created_at":"2026-05-18T01:48:52Z"},{"alias_kind":"arxiv_version","alias_value":"1307.2466v2","created_at":"2026-05-18T01:48:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1307.2466","created_at":"2026-05-18T01:48:52Z"},{"alias_kind":"pith_short_12","alias_value":"D4NQYTIMTZOJ","created_at":"2026-05-18T12:27:40Z"},{"alias_kind":"pith_short_16","alias_value":"D4NQYTIMTZOJ7IEG","created_at":"2026-05-18T12:27:40Z"},{"alias_kind":"pith_short_8","alias_value":"D4NQYTIM","created_at":"2026-05-18T12:27:40Z"}],"graph_snapshots":[{"event_id":"sha256:757b4a47988dc27b9765cd1ebd19a7dbf866b0ef86cf01a1792646e319840da4","target":"graph","created_at":"2026-05-18T01:48:52Z","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":"We examine the fracture mechanics of tearing graphene. We present a molecular dynamics simulation of the propagation of cracks in clamped, free-standing graphene as a function of the out-of-plane force. The geometry is motivated by experimental configurations that expose graphene sheets to out-of-plane forces, such as back-gate voltage. We establish the geometry and basic energetics of failure, and obtain approximate analytical expressions for critical crack lengths and forces. We also propose a method to obtain graphene's toughness. We observe that the cracks' path and the edge structure prod","authors_text":"Maria J. B. Moura, Michael Marder","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-07-09T14:13:40Z","title":"Tearing of Free-Standing Graphene"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.2466","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:ab745ce18dc8ed0b9bcc76146f410103ff30748899fba08827923c812a70129b","target":"record","created_at":"2026-05-18T01:48:52Z","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":"fbc78ee23c3fea1e67ebc414cd5ee5ff0faeef5e36bc41038116c11399109d43","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-07-09T14:13:40Z","title_canon_sha256":"d30cbd15bb2860b0d9b62e1f57a8a3cbe7d51c0a85e96c5f3e848c5e3245efc2"},"schema_version":"1.0","source":{"id":"1307.2466","kind":"arxiv","version":2}},"canonical_sha256":"1f1b0c4d0c9e5c9fa086dd8e3f22851570324797d4fe7d5d61a33ab32c714239","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1f1b0c4d0c9e5c9fa086dd8e3f22851570324797d4fe7d5d61a33ab32c714239","first_computed_at":"2026-05-18T01:48:52.879866Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:48:52.879866Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"H8Wrb87Bz+pW2vmQBdww/awwX+gTaEMbsGXM1uwCAJiDuAjHU8YBsKQ41DYby0Q4BDJvUWpIUBdmX5lI3MWSDg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:48:52.880627Z","signed_message":"canonical_sha256_bytes"},"source_id":"1307.2466","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ab745ce18dc8ed0b9bcc76146f410103ff30748899fba08827923c812a70129b","sha256:757b4a47988dc27b9765cd1ebd19a7dbf866b0ef86cf01a1792646e319840da4"],"state_sha256":"17ad9d758687d89f11828fd041ca18fcfa0bb532d0e47f6ce8868f39d6858d9d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QzBsKxcJctHX+jlpbQXMVb3dVEa21z7d+oCqLQL31DsCtvFP8oJYDAQiuin2cZpRxcVFJR8aDHgPIkZLMsjyBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-23T04:50:28.897098Z","bundle_sha256":"37b1c2848770849f5651d8b19c34d28a95a701b63ddb2ca80382f12e43f19e41"}}