{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2006:EDLPHWWPTV46ACEXEPUYX272VT","short_pith_number":"pith:EDLPHWWP","canonical_record":{"source":{"id":"cond-mat/0601120","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2006-01-06T14:32:20Z","cross_cats_sorted":[],"title_canon_sha256":"d9f678dc9a76f5bd5a9fd977a816c0c06617debda4d1c3a2df688dbe4d8a106d","abstract_canon_sha256":"63120eb38baab0a6bce46974adb5a539e5239316132356e309f28ebaead84cbe"},"schema_version":"1.0"},"canonical_sha256":"20d6f3dacf9d79e0089723e98bebfaacd59048a6900e51c100894c274b7d965d","source":{"kind":"arxiv","id":"cond-mat/0601120","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0601120","created_at":"2026-05-18T01:39:49Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0601120v1","created_at":"2026-05-18T01:39:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0601120","created_at":"2026-05-18T01:39:49Z"},{"alias_kind":"pith_short_12","alias_value":"EDLPHWWPTV46","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_16","alias_value":"EDLPHWWPTV46ACEX","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_8","alias_value":"EDLPHWWP","created_at":"2026-05-18T12:25:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2006:EDLPHWWPTV46ACEXEPUYX272VT","target":"record","payload":{"canonical_record":{"source":{"id":"cond-mat/0601120","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2006-01-06T14:32:20Z","cross_cats_sorted":[],"title_canon_sha256":"d9f678dc9a76f5bd5a9fd977a816c0c06617debda4d1c3a2df688dbe4d8a106d","abstract_canon_sha256":"63120eb38baab0a6bce46974adb5a539e5239316132356e309f28ebaead84cbe"},"schema_version":"1.0"},"canonical_sha256":"20d6f3dacf9d79e0089723e98bebfaacd59048a6900e51c100894c274b7d965d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:39:49.107635Z","signature_b64":"EWnw/0/Adn1W85NKXNwRUFP5zcfyaxN5a8mKCZajL3EGmX+qSsDIpUT7u7W5I/0WZ/vUGXSVxhc6Rmm52j/YAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"20d6f3dacf9d79e0089723e98bebfaacd59048a6900e51c100894c274b7d965d","last_reissued_at":"2026-05-18T01:39:49.106993Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:39:49.106993Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"cond-mat/0601120","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":"2026-05-18T01:39:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TnbCaFtYDWa3bItx0JTg4GgIHlJwiif+1/fj1QqRzZUyIK3u6C/R/zOPIoF2YCMlbZ+dTy+IL3f2XGvpmqhfAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T23:13:49.669091Z"},"content_sha256":"dc29a4d334505efc87e0fab057f82d05d09564c50ab3c30b5de5f32409c12f02","schema_version":"1.0","event_id":"sha256:dc29a4d334505efc87e0fab057f82d05d09564c50ab3c30b5de5f32409c12f02"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2006:EDLPHWWPTV46ACEXEPUYX272VT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Nonequilibrium and Nonlinear Dynamics in Geomaterials I : The Low Strain Regime","license":"","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"David Higdon, Donatella Pasqualini, James A. TenCate, Katrin Heitmann, Paul A. Johnson, Salman Habib","submitted_at":"2006-01-06T14:32:20Z","abstract_excerpt":"Members of a wide class of geomaterials are known to display complex and fascinating nonlinear and nonequilibrium dynamical behaviors over a wide range of bulk strains, down to surprisingly low values, e.g., 10^{-7}. In this paper we investigate two sandstones, Berea and Fontainebleau, and characterize their behavior under the influence of very small external forces via carefully controlled resonant bar experiments. By reducing environmental effects due to temperature and humidity variations, we are able to systematically and reproducibly study dynamical behavior at strains as low as 10^{-9}. "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0601120","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":"2026-05-18T01:39:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dyx7YvEdlypIwZjk3XJFm+RRoXFFPkk3+EyryMIet48gHAI/cKNzWk3T8nAR3jhd9RJ32RDSfolB7CLgvK1JBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T23:13:49.669768Z"},"content_sha256":"fcbcabd3f49e1336abdeb2e0edaba611a26b68918880046010cde73d3f469728","schema_version":"1.0","event_id":"sha256:fcbcabd3f49e1336abdeb2e0edaba611a26b68918880046010cde73d3f469728"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EDLPHWWPTV46ACEXEPUYX272VT/bundle.json","state_url":"https://pith.science/pith/EDLPHWWPTV46ACEXEPUYX272VT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EDLPHWWPTV46ACEXEPUYX272VT/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":"2026-05-26T23:13:49Z","links":{"resolver":"https://pith.science/pith/EDLPHWWPTV46ACEXEPUYX272VT","bundle":"https://pith.science/pith/EDLPHWWPTV46ACEXEPUYX272VT/bundle.json","state":"https://pith.science/pith/EDLPHWWPTV46ACEXEPUYX272VT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EDLPHWWPTV46ACEXEPUYX272VT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2006:EDLPHWWPTV46ACEXEPUYX272VT","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":"63120eb38baab0a6bce46974adb5a539e5239316132356e309f28ebaead84cbe","cross_cats_sorted":[],"license":"","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2006-01-06T14:32:20Z","title_canon_sha256":"d9f678dc9a76f5bd5a9fd977a816c0c06617debda4d1c3a2df688dbe4d8a106d"},"schema_version":"1.0","source":{"id":"cond-mat/0601120","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0601120","created_at":"2026-05-18T01:39:49Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0601120v1","created_at":"2026-05-18T01:39:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0601120","created_at":"2026-05-18T01:39:49Z"},{"alias_kind":"pith_short_12","alias_value":"EDLPHWWPTV46","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_16","alias_value":"EDLPHWWPTV46ACEX","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_8","alias_value":"EDLPHWWP","created_at":"2026-05-18T12:25:53Z"}],"graph_snapshots":[{"event_id":"sha256:fcbcabd3f49e1336abdeb2e0edaba611a26b68918880046010cde73d3f469728","target":"graph","created_at":"2026-05-18T01:39:49Z","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":"Members of a wide class of geomaterials are known to display complex and fascinating nonlinear and nonequilibrium dynamical behaviors over a wide range of bulk strains, down to surprisingly low values, e.g., 10^{-7}. In this paper we investigate two sandstones, Berea and Fontainebleau, and characterize their behavior under the influence of very small external forces via carefully controlled resonant bar experiments. By reducing environmental effects due to temperature and humidity variations, we are able to systematically and reproducibly study dynamical behavior at strains as low as 10^{-9}. ","authors_text":"David Higdon, Donatella Pasqualini, James A. TenCate, Katrin Heitmann, Paul A. Johnson, Salman Habib","cross_cats":[],"headline":"","license":"","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2006-01-06T14:32:20Z","title":"Nonequilibrium and Nonlinear Dynamics in Geomaterials I : The Low Strain Regime"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0601120","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:dc29a4d334505efc87e0fab057f82d05d09564c50ab3c30b5de5f32409c12f02","target":"record","created_at":"2026-05-18T01:39:49Z","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":"63120eb38baab0a6bce46974adb5a539e5239316132356e309f28ebaead84cbe","cross_cats_sorted":[],"license":"","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2006-01-06T14:32:20Z","title_canon_sha256":"d9f678dc9a76f5bd5a9fd977a816c0c06617debda4d1c3a2df688dbe4d8a106d"},"schema_version":"1.0","source":{"id":"cond-mat/0601120","kind":"arxiv","version":1}},"canonical_sha256":"20d6f3dacf9d79e0089723e98bebfaacd59048a6900e51c100894c274b7d965d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"20d6f3dacf9d79e0089723e98bebfaacd59048a6900e51c100894c274b7d965d","first_computed_at":"2026-05-18T01:39:49.106993Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:39:49.106993Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"EWnw/0/Adn1W85NKXNwRUFP5zcfyaxN5a8mKCZajL3EGmX+qSsDIpUT7u7W5I/0WZ/vUGXSVxhc6Rmm52j/YAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:39:49.107635Z","signed_message":"canonical_sha256_bytes"},"source_id":"cond-mat/0601120","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:dc29a4d334505efc87e0fab057f82d05d09564c50ab3c30b5de5f32409c12f02","sha256:fcbcabd3f49e1336abdeb2e0edaba611a26b68918880046010cde73d3f469728"],"state_sha256":"501d84459abd8d2eaf4fe72833265ea531ea4a0ff6ba5f75be860e77b0caa53c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tQ5o5rZrXctzA1Okq9YrpWE3H+GpkOzJ1dHyzWIeasiLr7W0Bd2noqpx5G8ZilXoST4MFkgAnyyCMZ3cENCkCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T23:13:49.673055Z","bundle_sha256":"56a7f55b2f90b7dc93902e12df947a2f2665f5e2eb7121a76841eb059ccb0652"}}