{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:HT4BB6JDTAGVS3ZQLEQ576NZ3F","short_pith_number":"pith:HT4BB6JD","canonical_record":{"source":{"id":"1402.6586","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.dis-nn","submitted_at":"2014-02-26T16:05:04Z","cross_cats_sorted":["cond-mat.soft","physics.geo-ph"],"title_canon_sha256":"d70532dcb2dce8c8c043dcc71846b91630da32f9a6cdf740ea610c1009c42b3a","abstract_canon_sha256":"e6eb80cbdecb8fe73c857ba1347254155864539faf78a45dc56a1b49bd4b23e0"},"schema_version":"1.0"},"canonical_sha256":"3cf810f923980d596f305921dff9b9d97f156fb0abdc59a70bda1e5ebcca6f7b","source":{"kind":"arxiv","id":"1402.6586","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1402.6586","created_at":"2026-05-18T02:57:44Z"},{"alias_kind":"arxiv_version","alias_value":"1402.6586v1","created_at":"2026-05-18T02:57:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1402.6586","created_at":"2026-05-18T02:57:44Z"},{"alias_kind":"pith_short_12","alias_value":"HT4BB6JDTAGV","created_at":"2026-05-18T12:28:30Z"},{"alias_kind":"pith_short_16","alias_value":"HT4BB6JDTAGVS3ZQ","created_at":"2026-05-18T12:28:30Z"},{"alias_kind":"pith_short_8","alias_value":"HT4BB6JD","created_at":"2026-05-18T12:28:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:HT4BB6JDTAGVS3ZQLEQ576NZ3F","target":"record","payload":{"canonical_record":{"source":{"id":"1402.6586","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.dis-nn","submitted_at":"2014-02-26T16:05:04Z","cross_cats_sorted":["cond-mat.soft","physics.geo-ph"],"title_canon_sha256":"d70532dcb2dce8c8c043dcc71846b91630da32f9a6cdf740ea610c1009c42b3a","abstract_canon_sha256":"e6eb80cbdecb8fe73c857ba1347254155864539faf78a45dc56a1b49bd4b23e0"},"schema_version":"1.0"},"canonical_sha256":"3cf810f923980d596f305921dff9b9d97f156fb0abdc59a70bda1e5ebcca6f7b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:57:44.050439Z","signature_b64":"jn38nETIDEcQCl+vlOALBocVRQLIGsPqxAC9MRVra3f1wxN/bhy9+cxYDhxrOSXzyBnMlIC1iNsLhYLWmqq5Bg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3cf810f923980d596f305921dff9b9d97f156fb0abdc59a70bda1e5ebcca6f7b","last_reissued_at":"2026-05-18T02:57:44.049870Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:57:44.049870Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1402.6586","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":"2026-05-18T02:57:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QYilf956s7tKhmR0SCzmVbFT0MooYP77VmEHwTTE6NnavF2RxMCMkyteGDaO9UV1leTOf5YeISEOfohWuJxwCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T23:20:54.429451Z"},"content_sha256":"f0134fc03f9db7450b4537e53c7b332ca6a855b4803ffc13c46f830ae6fedb03","schema_version":"1.0","event_id":"sha256:f0134fc03f9db7450b4537e53c7b332ca6a855b4803ffc13c46f830ae6fedb03"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:HT4BB6JDTAGVS3ZQLEQ576NZ3F","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Approach to failure in porous granular materials under compression","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.soft","physics.geo-ph"],"primary_cat":"cond-mat.dis-nn","authors_text":"F. Kun, I. G. Main, I. Varga, S. Lennartz-Sassinek","submitted_at":"2014-02-26T16:05:04Z","abstract_excerpt":"We investigate the approach to catastrophic failure in a model porous granular material undergoing uniaxial compression. A discrete element computational model is used to simulate both the micro-structure of the material and the complex dynamics and feedbacks involved in local fracturing and the production of crackling noise. Under strain-controlled loading micro-cracks initially nucleate in an uncorrelated way all over the sample. As loading proceeds the damage localizes into a narrow damage band inclined at 30-45 degrees to the load direction. Inside the damage band the material is crushed i"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1402.6586","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":""},"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":"2026-05-18T02:57:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EGxiW3rV7P2q3YV5NQRxmztwvadcYHjTNpAfxdBEvANPiqZbPLDJ6ep0Xy4r78nv3jbGzue6/j12Vdajk8DsDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T23:20:54.430213Z"},"content_sha256":"4f533cd46740f95b1ff051e5a1b57f12b897fbf0088efd97e35736a39c2d7638","schema_version":"1.0","event_id":"sha256:4f533cd46740f95b1ff051e5a1b57f12b897fbf0088efd97e35736a39c2d7638"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HT4BB6JDTAGVS3ZQLEQ576NZ3F/bundle.json","state_url":"https://pith.science/pith/HT4BB6JDTAGVS3ZQLEQ576NZ3F/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HT4BB6JDTAGVS3ZQLEQ576NZ3F/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":"2026-06-10T23:20:54Z","links":{"resolver":"https://pith.science/pith/HT4BB6JDTAGVS3ZQLEQ576NZ3F","bundle":"https://pith.science/pith/HT4BB6JDTAGVS3ZQLEQ576NZ3F/bundle.json","state":"https://pith.science/pith/HT4BB6JDTAGVS3ZQLEQ576NZ3F/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HT4BB6JDTAGVS3ZQLEQ576NZ3F/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:HT4BB6JDTAGVS3ZQLEQ576NZ3F","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":"e6eb80cbdecb8fe73c857ba1347254155864539faf78a45dc56a1b49bd4b23e0","cross_cats_sorted":["cond-mat.soft","physics.geo-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.dis-nn","submitted_at":"2014-02-26T16:05:04Z","title_canon_sha256":"d70532dcb2dce8c8c043dcc71846b91630da32f9a6cdf740ea610c1009c42b3a"},"schema_version":"1.0","source":{"id":"1402.6586","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1402.6586","created_at":"2026-05-18T02:57:44Z"},{"alias_kind":"arxiv_version","alias_value":"1402.6586v1","created_at":"2026-05-18T02:57:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1402.6586","created_at":"2026-05-18T02:57:44Z"},{"alias_kind":"pith_short_12","alias_value":"HT4BB6JDTAGV","created_at":"2026-05-18T12:28:30Z"},{"alias_kind":"pith_short_16","alias_value":"HT4BB6JDTAGVS3ZQ","created_at":"2026-05-18T12:28:30Z"},{"alias_kind":"pith_short_8","alias_value":"HT4BB6JD","created_at":"2026-05-18T12:28:30Z"}],"graph_snapshots":[{"event_id":"sha256:4f533cd46740f95b1ff051e5a1b57f12b897fbf0088efd97e35736a39c2d7638","target":"graph","created_at":"2026-05-18T02:57:44Z","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 investigate the approach to catastrophic failure in a model porous granular material undergoing uniaxial compression. A discrete element computational model is used to simulate both the micro-structure of the material and the complex dynamics and feedbacks involved in local fracturing and the production of crackling noise. Under strain-controlled loading micro-cracks initially nucleate in an uncorrelated way all over the sample. As loading proceeds the damage localizes into a narrow damage band inclined at 30-45 degrees to the load direction. Inside the damage band the material is crushed i","authors_text":"F. Kun, I. G. Main, I. Varga, S. Lennartz-Sassinek","cross_cats":["cond-mat.soft","physics.geo-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.dis-nn","submitted_at":"2014-02-26T16:05:04Z","title":"Approach to failure in porous granular materials under compression"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1402.6586","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:f0134fc03f9db7450b4537e53c7b332ca6a855b4803ffc13c46f830ae6fedb03","target":"record","created_at":"2026-05-18T02:57:44Z","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":"e6eb80cbdecb8fe73c857ba1347254155864539faf78a45dc56a1b49bd4b23e0","cross_cats_sorted":["cond-mat.soft","physics.geo-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.dis-nn","submitted_at":"2014-02-26T16:05:04Z","title_canon_sha256":"d70532dcb2dce8c8c043dcc71846b91630da32f9a6cdf740ea610c1009c42b3a"},"schema_version":"1.0","source":{"id":"1402.6586","kind":"arxiv","version":1}},"canonical_sha256":"3cf810f923980d596f305921dff9b9d97f156fb0abdc59a70bda1e5ebcca6f7b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3cf810f923980d596f305921dff9b9d97f156fb0abdc59a70bda1e5ebcca6f7b","first_computed_at":"2026-05-18T02:57:44.049870Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:57:44.049870Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"jn38nETIDEcQCl+vlOALBocVRQLIGsPqxAC9MRVra3f1wxN/bhy9+cxYDhxrOSXzyBnMlIC1iNsLhYLWmqq5Bg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:57:44.050439Z","signed_message":"canonical_sha256_bytes"},"source_id":"1402.6586","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f0134fc03f9db7450b4537e53c7b332ca6a855b4803ffc13c46f830ae6fedb03","sha256:4f533cd46740f95b1ff051e5a1b57f12b897fbf0088efd97e35736a39c2d7638"],"state_sha256":"d94664b3cb59c41c0cb619ec7a7a2405b2824a8b17ae13759a97d7607b3ebfd4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nJ326pzbVAs07nUvTfPLvTGXCyBkXn0kl39TjHCAmwJawjAaatOFAhNNbRdeVHRy8W7k2kd/G3IvGdbKsKUbAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-10T23:20:54.434470Z","bundle_sha256":"0f3514e0d7bed0be323d2395d400133d20f7e1b04164ee5800383f9b8c782496"}}