{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:EST4G3H4PEJDE2XJ4EXT3LQRL2","short_pith_number":"pith:EST4G3H4","canonical_record":{"source":{"id":"1108.3315","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2011-08-16T18:55:28Z","cross_cats_sorted":[],"title_canon_sha256":"479b1dab26c71651ca8fa739bf1fdb4bd1fb8a89c03d36e2ee8e9fb23186c411","abstract_canon_sha256":"f562cf6901305561cdb14fbb6f14b61485eccfcd80e3e4361e3b2e23493c4618"},"schema_version":"1.0"},"canonical_sha256":"24a7c36cfc7912326ae9e12f3dae115eafb59ed0ad2768fb55e360924609bcab","source":{"kind":"arxiv","id":"1108.3315","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1108.3315","created_at":"2026-05-18T02:00:53Z"},{"alias_kind":"arxiv_version","alias_value":"1108.3315v1","created_at":"2026-05-18T02:00:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1108.3315","created_at":"2026-05-18T02:00:53Z"},{"alias_kind":"pith_short_12","alias_value":"EST4G3H4PEJD","created_at":"2026-05-18T12:26:28Z"},{"alias_kind":"pith_short_16","alias_value":"EST4G3H4PEJDE2XJ","created_at":"2026-05-18T12:26:28Z"},{"alias_kind":"pith_short_8","alias_value":"EST4G3H4","created_at":"2026-05-18T12:26:28Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:EST4G3H4PEJDE2XJ4EXT3LQRL2","target":"record","payload":{"canonical_record":{"source":{"id":"1108.3315","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2011-08-16T18:55:28Z","cross_cats_sorted":[],"title_canon_sha256":"479b1dab26c71651ca8fa739bf1fdb4bd1fb8a89c03d36e2ee8e9fb23186c411","abstract_canon_sha256":"f562cf6901305561cdb14fbb6f14b61485eccfcd80e3e4361e3b2e23493c4618"},"schema_version":"1.0"},"canonical_sha256":"24a7c36cfc7912326ae9e12f3dae115eafb59ed0ad2768fb55e360924609bcab","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:00:53.130080Z","signature_b64":"8pySKGf2uzkQCzBRJQndR5jjWdlDc0UWnOUyXHMKrLi4ZUcqm/76cITeIuBdDILRAMBDTTl0LjCiG2gyXiVtBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"24a7c36cfc7912326ae9e12f3dae115eafb59ed0ad2768fb55e360924609bcab","last_reissued_at":"2026-05-18T02:00:53.129482Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:00:53.129482Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1108.3315","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":"2026-05-18T02:00:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tKFvCA7Sk0bwwr3ZY833hCrpt03td/r4cRbpcqQWTnYLvupA8uXX0U97qxoETVATK+punsLtPO3NhJJzbR5UCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T04:38:14.244224Z"},"content_sha256":"f145dc87a112387fdf0e6d017546bef76b67cf2f85e162ada8a187f3e5bae562","schema_version":"1.0","event_id":"sha256:f145dc87a112387fdf0e6d017546bef76b67cf2f85e162ada8a187f3e5bae562"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:EST4G3H4PEJDE2XJ4EXT3LQRL2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Strain-stiffening in random packings of entangled granular chains","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.soft","authors_text":"Alice Nasto, Athanasios G. Athanassiadis, Eric Brown, Heinrich M. Jaeger","submitted_at":"2011-08-16T18:55:28Z","abstract_excerpt":"Random packings of granular chains are presented as a model polymer system to investigate the contribution of entanglements to strain-stiffening in the absence of Brownian motion. The chain packings are sheared in triaxial compression experiments. For short chain lengths, these packings yield when the shear stress exceeds a the scale of the confining pressure, similar to packings of spherical particles. In contrast, packings of chains which are long enough to form loops exhibit strain-stiffening, in which the effective stiffness of the material increases with strain, similar to many polymer ma"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1108.3315","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":"2026-05-18T02:00:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qCF6T8OFgyexiHc2BtonyfVS2+wiMu01nuc3rlSjVcOHtTw+x/IHXiP0bG/3cvrNyp5qxuuc/IAAPJtvSTXjBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T04:38:14.244592Z"},"content_sha256":"3b3cab1a4689f0049744159f9c7cefd168f144f4111af88b5044bd8aec76abf7","schema_version":"1.0","event_id":"sha256:3b3cab1a4689f0049744159f9c7cefd168f144f4111af88b5044bd8aec76abf7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EST4G3H4PEJDE2XJ4EXT3LQRL2/bundle.json","state_url":"https://pith.science/pith/EST4G3H4PEJDE2XJ4EXT3LQRL2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EST4G3H4PEJDE2XJ4EXT3LQRL2/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":"2026-05-28T04:38:14Z","links":{"resolver":"https://pith.science/pith/EST4G3H4PEJDE2XJ4EXT3LQRL2","bundle":"https://pith.science/pith/EST4G3H4PEJDE2XJ4EXT3LQRL2/bundle.json","state":"https://pith.science/pith/EST4G3H4PEJDE2XJ4EXT3LQRL2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EST4G3H4PEJDE2XJ4EXT3LQRL2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:EST4G3H4PEJDE2XJ4EXT3LQRL2","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":"f562cf6901305561cdb14fbb6f14b61485eccfcd80e3e4361e3b2e23493c4618","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2011-08-16T18:55:28Z","title_canon_sha256":"479b1dab26c71651ca8fa739bf1fdb4bd1fb8a89c03d36e2ee8e9fb23186c411"},"schema_version":"1.0","source":{"id":"1108.3315","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1108.3315","created_at":"2026-05-18T02:00:53Z"},{"alias_kind":"arxiv_version","alias_value":"1108.3315v1","created_at":"2026-05-18T02:00:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1108.3315","created_at":"2026-05-18T02:00:53Z"},{"alias_kind":"pith_short_12","alias_value":"EST4G3H4PEJD","created_at":"2026-05-18T12:26:28Z"},{"alias_kind":"pith_short_16","alias_value":"EST4G3H4PEJDE2XJ","created_at":"2026-05-18T12:26:28Z"},{"alias_kind":"pith_short_8","alias_value":"EST4G3H4","created_at":"2026-05-18T12:26:28Z"}],"graph_snapshots":[{"event_id":"sha256:3b3cab1a4689f0049744159f9c7cefd168f144f4111af88b5044bd8aec76abf7","target":"graph","created_at":"2026-05-18T02:00:53Z","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":"Random packings of granular chains are presented as a model polymer system to investigate the contribution of entanglements to strain-stiffening in the absence of Brownian motion. The chain packings are sheared in triaxial compression experiments. For short chain lengths, these packings yield when the shear stress exceeds a the scale of the confining pressure, similar to packings of spherical particles. In contrast, packings of chains which are long enough to form loops exhibit strain-stiffening, in which the effective stiffness of the material increases with strain, similar to many polymer ma","authors_text":"Alice Nasto, Athanasios G. Athanassiadis, Eric Brown, Heinrich M. Jaeger","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2011-08-16T18:55:28Z","title":"Strain-stiffening in random packings of entangled granular chains"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1108.3315","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:f145dc87a112387fdf0e6d017546bef76b67cf2f85e162ada8a187f3e5bae562","target":"record","created_at":"2026-05-18T02:00:53Z","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":"f562cf6901305561cdb14fbb6f14b61485eccfcd80e3e4361e3b2e23493c4618","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2011-08-16T18:55:28Z","title_canon_sha256":"479b1dab26c71651ca8fa739bf1fdb4bd1fb8a89c03d36e2ee8e9fb23186c411"},"schema_version":"1.0","source":{"id":"1108.3315","kind":"arxiv","version":1}},"canonical_sha256":"24a7c36cfc7912326ae9e12f3dae115eafb59ed0ad2768fb55e360924609bcab","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"24a7c36cfc7912326ae9e12f3dae115eafb59ed0ad2768fb55e360924609bcab","first_computed_at":"2026-05-18T02:00:53.129482Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:00:53.129482Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"8pySKGf2uzkQCzBRJQndR5jjWdlDc0UWnOUyXHMKrLi4ZUcqm/76cITeIuBdDILRAMBDTTl0LjCiG2gyXiVtBw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:00:53.130080Z","signed_message":"canonical_sha256_bytes"},"source_id":"1108.3315","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f145dc87a112387fdf0e6d017546bef76b67cf2f85e162ada8a187f3e5bae562","sha256:3b3cab1a4689f0049744159f9c7cefd168f144f4111af88b5044bd8aec76abf7"],"state_sha256":"7695760c136488b6036304ab83204205302c7151276f0c0d4a097b88cfcd8c79"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2cQ/mdUeNpDYV3BktQgoV15hT2VAuEf2FlpneRBoJezfwc3V6FRHPpdkoOUIl3neR1h0X9GFwjR317CvPhC6AQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T04:38:14.246767Z","bundle_sha256":"e4ffe9fa28efdb42631eafc6cc45a8d09e57fe1fe47f94ace60148bf2c556370"}}