{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:INJQKQWEUIC65CE37A7S4FCB4G","short_pith_number":"pith:INJQKQWE","canonical_record":{"source":{"id":"1803.07456","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2018-03-20T14:34:19Z","cross_cats_sorted":["cond-mat.mtrl-sci","physics.comp-ph"],"title_canon_sha256":"230bbe2a73c0349be25dfb5c1d77e2ff177b8344e7d6bb12376e18cfc1ba3a53","abstract_canon_sha256":"7b1d3eac0775b4039dd73c4d4b28cc1c07b627ab4e985d92b81e4df7f3b6b144"},"schema_version":"1.0"},"canonical_sha256":"43530542c4a205ee889bf83f2e1441e18f7049b2bd69e6191b2b68aa3a6306d3","source":{"kind":"arxiv","id":"1803.07456","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.07456","created_at":"2026-05-18T00:00:56Z"},{"alias_kind":"arxiv_version","alias_value":"1803.07456v1","created_at":"2026-05-18T00:00:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.07456","created_at":"2026-05-18T00:00:56Z"},{"alias_kind":"pith_short_12","alias_value":"INJQKQWEUIC6","created_at":"2026-05-18T12:32:31Z"},{"alias_kind":"pith_short_16","alias_value":"INJQKQWEUIC65CE3","created_at":"2026-05-18T12:32:31Z"},{"alias_kind":"pith_short_8","alias_value":"INJQKQWE","created_at":"2026-05-18T12:32:31Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:INJQKQWEUIC65CE37A7S4FCB4G","target":"record","payload":{"canonical_record":{"source":{"id":"1803.07456","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2018-03-20T14:34:19Z","cross_cats_sorted":["cond-mat.mtrl-sci","physics.comp-ph"],"title_canon_sha256":"230bbe2a73c0349be25dfb5c1d77e2ff177b8344e7d6bb12376e18cfc1ba3a53","abstract_canon_sha256":"7b1d3eac0775b4039dd73c4d4b28cc1c07b627ab4e985d92b81e4df7f3b6b144"},"schema_version":"1.0"},"canonical_sha256":"43530542c4a205ee889bf83f2e1441e18f7049b2bd69e6191b2b68aa3a6306d3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:00:56.878049Z","signature_b64":"dnyB7HPTuvCVIAT/9KvMhy+PTl7GF/Mo0w22qrBFvem00JzvAuU61GqtGiTv3alDE4bFXvLfae83W3BLCKnCAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"43530542c4a205ee889bf83f2e1441e18f7049b2bd69e6191b2b68aa3a6306d3","last_reissued_at":"2026-05-18T00:00:56.877444Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:00:56.877444Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1803.07456","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":"2026-05-18T00:00:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jhIZw6IB7CMi+dekI3k4/ckHOvpVyRt+sf8jQz9oo43CiBU6CYwqU/owj4W8gwOjEvz+o4oZA+UuzGtOrBBjDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-22T19:39:54.019250Z"},"content_sha256":"e78d8d03edd2aa3d0343f48bae0ffbebf858a8b76beb2c9ad27d1fb8d1f556ed","schema_version":"1.0","event_id":"sha256:e78d8d03edd2aa3d0343f48bae0ffbebf858a8b76beb2c9ad27d1fb8d1f556ed"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:INJQKQWEUIC65CE37A7S4FCB4G","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Generalized loading-unloading contact laws for elasto-plastic spheres with bonding strength","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci","physics.comp-ph"],"primary_cat":"cond-mat.soft","authors_text":"Marcial Gonzalez","submitted_at":"2018-03-20T14:34:19Z","abstract_excerpt":"We present generalized loading-unloading contact laws for elasto-plastic spheres with bonding strength. The proposed mechanistic contact laws are continuous at the onset of unloading by means of a regularization term, in the spirit of a cohesive zone model, that introduces a small and controllable error in the conditions for interparticle breakage. This continuity property is in sharp contrast with the behavior of standard mechanistic loading and unloading contact theories, which exhibit a discontinuity at the onset of unloading when particles form solid bridges during plastic deformation. The"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.07456","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":"2026-05-18T00:00:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"O8/WNglvvaZcBeIlSubpE4b/JfXBU1tFLu4m2thQZkAcOhK8OTCzLbCqvG+d9w/+6ZapyUE0VXibkwuHa2WLCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-22T19:39:54.019614Z"},"content_sha256":"f87f0fbf4a7c87f86cbc777ad772aa564518f5a731e135c3212b9c0d4972b7d2","schema_version":"1.0","event_id":"sha256:f87f0fbf4a7c87f86cbc777ad772aa564518f5a731e135c3212b9c0d4972b7d2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/INJQKQWEUIC65CE37A7S4FCB4G/bundle.json","state_url":"https://pith.science/pith/INJQKQWEUIC65CE37A7S4FCB4G/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/INJQKQWEUIC65CE37A7S4FCB4G/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":"2026-05-22T19:39:54Z","links":{"resolver":"https://pith.science/pith/INJQKQWEUIC65CE37A7S4FCB4G","bundle":"https://pith.science/pith/INJQKQWEUIC65CE37A7S4FCB4G/bundle.json","state":"https://pith.science/pith/INJQKQWEUIC65CE37A7S4FCB4G/state.json","well_known_bundle":"https://pith.science/.well-known/pith/INJQKQWEUIC65CE37A7S4FCB4G/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:INJQKQWEUIC65CE37A7S4FCB4G","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":"7b1d3eac0775b4039dd73c4d4b28cc1c07b627ab4e985d92b81e4df7f3b6b144","cross_cats_sorted":["cond-mat.mtrl-sci","physics.comp-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2018-03-20T14:34:19Z","title_canon_sha256":"230bbe2a73c0349be25dfb5c1d77e2ff177b8344e7d6bb12376e18cfc1ba3a53"},"schema_version":"1.0","source":{"id":"1803.07456","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.07456","created_at":"2026-05-18T00:00:56Z"},{"alias_kind":"arxiv_version","alias_value":"1803.07456v1","created_at":"2026-05-18T00:00:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.07456","created_at":"2026-05-18T00:00:56Z"},{"alias_kind":"pith_short_12","alias_value":"INJQKQWEUIC6","created_at":"2026-05-18T12:32:31Z"},{"alias_kind":"pith_short_16","alias_value":"INJQKQWEUIC65CE3","created_at":"2026-05-18T12:32:31Z"},{"alias_kind":"pith_short_8","alias_value":"INJQKQWE","created_at":"2026-05-18T12:32:31Z"}],"graph_snapshots":[{"event_id":"sha256:f87f0fbf4a7c87f86cbc777ad772aa564518f5a731e135c3212b9c0d4972b7d2","target":"graph","created_at":"2026-05-18T00:00:56Z","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 present generalized loading-unloading contact laws for elasto-plastic spheres with bonding strength. The proposed mechanistic contact laws are continuous at the onset of unloading by means of a regularization term, in the spirit of a cohesive zone model, that introduces a small and controllable error in the conditions for interparticle breakage. This continuity property is in sharp contrast with the behavior of standard mechanistic loading and unloading contact theories, which exhibit a discontinuity at the onset of unloading when particles form solid bridges during plastic deformation. The","authors_text":"Marcial Gonzalez","cross_cats":["cond-mat.mtrl-sci","physics.comp-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2018-03-20T14:34:19Z","title":"Generalized loading-unloading contact laws for elasto-plastic spheres with bonding strength"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.07456","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:e78d8d03edd2aa3d0343f48bae0ffbebf858a8b76beb2c9ad27d1fb8d1f556ed","target":"record","created_at":"2026-05-18T00:00:56Z","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":"7b1d3eac0775b4039dd73c4d4b28cc1c07b627ab4e985d92b81e4df7f3b6b144","cross_cats_sorted":["cond-mat.mtrl-sci","physics.comp-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2018-03-20T14:34:19Z","title_canon_sha256":"230bbe2a73c0349be25dfb5c1d77e2ff177b8344e7d6bb12376e18cfc1ba3a53"},"schema_version":"1.0","source":{"id":"1803.07456","kind":"arxiv","version":1}},"canonical_sha256":"43530542c4a205ee889bf83f2e1441e18f7049b2bd69e6191b2b68aa3a6306d3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"43530542c4a205ee889bf83f2e1441e18f7049b2bd69e6191b2b68aa3a6306d3","first_computed_at":"2026-05-18T00:00:56.877444Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:00:56.877444Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"dnyB7HPTuvCVIAT/9KvMhy+PTl7GF/Mo0w22qrBFvem00JzvAuU61GqtGiTv3alDE4bFXvLfae83W3BLCKnCAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:00:56.878049Z","signed_message":"canonical_sha256_bytes"},"source_id":"1803.07456","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e78d8d03edd2aa3d0343f48bae0ffbebf858a8b76beb2c9ad27d1fb8d1f556ed","sha256:f87f0fbf4a7c87f86cbc777ad772aa564518f5a731e135c3212b9c0d4972b7d2"],"state_sha256":"2e06239a0b0f1f818a93f4eed633ec4593d48bda9276ed2c8c1b7b322cdeb15b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"N5g8Jz5OqNeWh0FQ7bIe/SZex6x2KRRwgbjfd7/2NiCQ/WlTMzR+wm7Kd2XEhdVasPJzd5tNPZ9hYtUJJBOuCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-22T19:39:54.021921Z","bundle_sha256":"63a9776404bf853758564c55d292edbddb5e6ce7c0d0d71eafab5f15e8bda833"}}