{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:VJYXGDMY5U73FLOFJQOGEJZG6Z","short_pith_number":"pith:VJYXGDMY","canonical_record":{"source":{"id":"2606.03473","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.dis-nn","submitted_at":"2026-06-02T10:49:36Z","cross_cats_sorted":[],"title_canon_sha256":"275744d93c89bd5d6421f79c2cc3474899b9c7181c61f0486e273b6c9ea2a2a6","abstract_canon_sha256":"de3df6ecd10ab69610766b9b67e6b3b4cce2d7f935063fb7b79c271668cf3a13"},"schema_version":"1.0"},"canonical_sha256":"aa71730d98ed3fb2adc54c1c622726f6569dfb05414e2a553c6331ba14c2a2a2","source":{"kind":"arxiv","id":"2606.03473","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.03473","created_at":"2026-06-03T01:05:58Z"},{"alias_kind":"arxiv_version","alias_value":"2606.03473v1","created_at":"2026-06-03T01:05:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.03473","created_at":"2026-06-03T01:05:58Z"},{"alias_kind":"pith_short_12","alias_value":"VJYXGDMY5U73","created_at":"2026-06-03T01:05:58Z"},{"alias_kind":"pith_short_16","alias_value":"VJYXGDMY5U73FLOF","created_at":"2026-06-03T01:05:58Z"},{"alias_kind":"pith_short_8","alias_value":"VJYXGDMY","created_at":"2026-06-03T01:05:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:VJYXGDMY5U73FLOFJQOGEJZG6Z","target":"record","payload":{"canonical_record":{"source":{"id":"2606.03473","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.dis-nn","submitted_at":"2026-06-02T10:49:36Z","cross_cats_sorted":[],"title_canon_sha256":"275744d93c89bd5d6421f79c2cc3474899b9c7181c61f0486e273b6c9ea2a2a6","abstract_canon_sha256":"de3df6ecd10ab69610766b9b67e6b3b4cce2d7f935063fb7b79c271668cf3a13"},"schema_version":"1.0"},"canonical_sha256":"aa71730d98ed3fb2adc54c1c622726f6569dfb05414e2a553c6331ba14c2a2a2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-03T01:05:58.791755Z","signature_b64":"60m99DNppB5RSXLaIRmIHQqCVXr+GLCtNZlmqqI6dfnMjsabP5Bk2yCrO672mGBIbHIiuP7fRGG8mONvsxQqBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"aa71730d98ed3fb2adc54c1c622726f6569dfb05414e2a553c6331ba14c2a2a2","last_reissued_at":"2026-06-03T01:05:58.791338Z","signature_status":"signed_v1","first_computed_at":"2026-06-03T01:05:58.791338Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2606.03473","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":"2026-06-03T01:05:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kslKyimLbxqVeEqaEm8FARns+fgjZis62FfB60NsFdSDDeEZWUvPPXKKos/hB6+jQFsSk/pmZFtFUhd4GvCFCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-12T06:42:32.776895Z"},"content_sha256":"5b954bd124a83815c58e3e14605d9a0c43e50b90c00953af4274da36ac01acaf","schema_version":"1.0","event_id":"sha256:5b954bd124a83815c58e3e14605d9a0c43e50b90c00953af4274da36ac01acaf"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:VJYXGDMY5U73FLOFJQOGEJZG6Z","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Hierarchical crack patterns: Identification of crack generations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.dis-nn","authors_text":"Andrei S. Burmistrov, Andrei V. Eserkepov, Yuri Yu. Tarasevich","submitted_at":"2026-06-02T10:49:36Z","abstract_excerpt":"Hierarchical crack patterns of various origins are ubiquitous in the world around us. We reduce the problem of classifying crack generations in an image of a part of the entire hierarchical crack pattern to the well-known topological sorting of a directed acyclic graph. The classification demonstrates robustness to reasonable shifts in the pattern image boundaries."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.03473","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/2606.03473/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":"2026-06-03T01:05:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+mCqcWS7K8Y2m3YLscFF1Bn+zw4fSB//udgnOo5es0MaecoIS1QQuQlXXDEasntsZusbMg5RGehYqbsdsny4AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-12T06:42:32.777269Z"},"content_sha256":"4c406e595e9295519fd085ff2ab6c1ce4b5f19273c4c706b7618663759adccbb","schema_version":"1.0","event_id":"sha256:4c406e595e9295519fd085ff2ab6c1ce4b5f19273c4c706b7618663759adccbb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VJYXGDMY5U73FLOFJQOGEJZG6Z/bundle.json","state_url":"https://pith.science/pith/VJYXGDMY5U73FLOFJQOGEJZG6Z/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VJYXGDMY5U73FLOFJQOGEJZG6Z/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":"2026-06-12T06:42:32Z","links":{"resolver":"https://pith.science/pith/VJYXGDMY5U73FLOFJQOGEJZG6Z","bundle":"https://pith.science/pith/VJYXGDMY5U73FLOFJQOGEJZG6Z/bundle.json","state":"https://pith.science/pith/VJYXGDMY5U73FLOFJQOGEJZG6Z/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VJYXGDMY5U73FLOFJQOGEJZG6Z/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:VJYXGDMY5U73FLOFJQOGEJZG6Z","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":"de3df6ecd10ab69610766b9b67e6b3b4cce2d7f935063fb7b79c271668cf3a13","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.dis-nn","submitted_at":"2026-06-02T10:49:36Z","title_canon_sha256":"275744d93c89bd5d6421f79c2cc3474899b9c7181c61f0486e273b6c9ea2a2a6"},"schema_version":"1.0","source":{"id":"2606.03473","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.03473","created_at":"2026-06-03T01:05:58Z"},{"alias_kind":"arxiv_version","alias_value":"2606.03473v1","created_at":"2026-06-03T01:05:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.03473","created_at":"2026-06-03T01:05:58Z"},{"alias_kind":"pith_short_12","alias_value":"VJYXGDMY5U73","created_at":"2026-06-03T01:05:58Z"},{"alias_kind":"pith_short_16","alias_value":"VJYXGDMY5U73FLOF","created_at":"2026-06-03T01:05:58Z"},{"alias_kind":"pith_short_8","alias_value":"VJYXGDMY","created_at":"2026-06-03T01:05:58Z"}],"graph_snapshots":[{"event_id":"sha256:4c406e595e9295519fd085ff2ab6c1ce4b5f19273c4c706b7618663759adccbb","target":"graph","created_at":"2026-06-03T01:05:58Z","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/2606.03473/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Hierarchical crack patterns of various origins are ubiquitous in the world around us. We reduce the problem of classifying crack generations in an image of a part of the entire hierarchical crack pattern to the well-known topological sorting of a directed acyclic graph. The classification demonstrates robustness to reasonable shifts in the pattern image boundaries.","authors_text":"Andrei S. Burmistrov, Andrei V. Eserkepov, Yuri Yu. Tarasevich","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.dis-nn","submitted_at":"2026-06-02T10:49:36Z","title":"Hierarchical crack patterns: Identification of crack generations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.03473","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":"sha256:5b954bd124a83815c58e3e14605d9a0c43e50b90c00953af4274da36ac01acaf","target":"record","created_at":"2026-06-03T01:05:58Z","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":"de3df6ecd10ab69610766b9b67e6b3b4cce2d7f935063fb7b79c271668cf3a13","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.dis-nn","submitted_at":"2026-06-02T10:49:36Z","title_canon_sha256":"275744d93c89bd5d6421f79c2cc3474899b9c7181c61f0486e273b6c9ea2a2a6"},"schema_version":"1.0","source":{"id":"2606.03473","kind":"arxiv","version":1}},"canonical_sha256":"aa71730d98ed3fb2adc54c1c622726f6569dfb05414e2a553c6331ba14c2a2a2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"aa71730d98ed3fb2adc54c1c622726f6569dfb05414e2a553c6331ba14c2a2a2","first_computed_at":"2026-06-03T01:05:58.791338Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-03T01:05:58.791338Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"60m99DNppB5RSXLaIRmIHQqCVXr+GLCtNZlmqqI6dfnMjsabP5Bk2yCrO672mGBIbHIiuP7fRGG8mONvsxQqBw==","signature_status":"signed_v1","signed_at":"2026-06-03T01:05:58.791755Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.03473","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5b954bd124a83815c58e3e14605d9a0c43e50b90c00953af4274da36ac01acaf","sha256:4c406e595e9295519fd085ff2ab6c1ce4b5f19273c4c706b7618663759adccbb"],"state_sha256":"6130b740ded2c77dde04f260d6c7e6730f1aa5d7232a396047fd82df83c13e08"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LGs64xlvRUDnBM5RJ+QBhyhj8MDo9UTR0Z50LysUuJqocvYki6peD8Ld5d2PBMSS9W+IVML+0qPWQFbr6J2DDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-12T06:42:32.779981Z","bundle_sha256":"bb1323041e4b0bda453db397f2101e5adfc6f9b5f25b22d71cdcaf0fbcd22e3d"}}