{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:EGQLOQOX7NWZYOFZVNDTXJ5C7X","short_pith_number":"pith:EGQLOQOX","canonical_record":{"source":{"id":"2404.05642","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.soft","submitted_at":"2024-04-08T16:21:53Z","cross_cats_sorted":[],"title_canon_sha256":"500131123222753695449e0c6efe8264233b982ee031fa16b559af201f3865dc","abstract_canon_sha256":"90dc1da2534d458ed4094cf18d7d1e899a3b0fc9e8a3f27b2351d8dd347a4cdd"},"schema_version":"1.0"},"canonical_sha256":"21a0b741d7fb6d9c38b9ab473ba7a2fdcfe65f6e6946aed4200f4c49c7795693","source":{"kind":"arxiv","id":"2404.05642","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2404.05642","created_at":"2026-07-05T09:16:14Z"},{"alias_kind":"arxiv_version","alias_value":"2404.05642v1","created_at":"2026-07-05T09:16:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2404.05642","created_at":"2026-07-05T09:16:14Z"},{"alias_kind":"pith_short_12","alias_value":"EGQLOQOX7NWZ","created_at":"2026-07-05T09:16:14Z"},{"alias_kind":"pith_short_16","alias_value":"EGQLOQOX7NWZYOFZ","created_at":"2026-07-05T09:16:14Z"},{"alias_kind":"pith_short_8","alias_value":"EGQLOQOX","created_at":"2026-07-05T09:16:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:EGQLOQOX7NWZYOFZVNDTXJ5C7X","target":"record","payload":{"canonical_record":{"source":{"id":"2404.05642","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.soft","submitted_at":"2024-04-08T16:21:53Z","cross_cats_sorted":[],"title_canon_sha256":"500131123222753695449e0c6efe8264233b982ee031fa16b559af201f3865dc","abstract_canon_sha256":"90dc1da2534d458ed4094cf18d7d1e899a3b0fc9e8a3f27b2351d8dd347a4cdd"},"schema_version":"1.0"},"canonical_sha256":"21a0b741d7fb6d9c38b9ab473ba7a2fdcfe65f6e6946aed4200f4c49c7795693","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T09:16:14.343445Z","signature_b64":"tRGQWMBkbFu3bGGft+3GvJexaT29RjxE4TbwBeodAp8qijjPEZvB4y5YoV26w5J0uhFKip1ht3gdmfGvfOq9Aw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"21a0b741d7fb6d9c38b9ab473ba7a2fdcfe65f6e6946aed4200f4c49c7795693","last_reissued_at":"2026-07-05T09:16:14.342969Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T09:16:14.342969Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2404.05642","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":"2026-07-05T09:16:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MyIN8gwJ1ucmZLLrvm+VTSCTLhHvmHzRwV/rd7UPd4+oObJCvl5mo1yMIm+E3KK08d7zqd9wApW59xJl4Kl4AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T22:02:54.646474Z"},"content_sha256":"9cbe14eb14c39fc6d25cfd3efb3bce11238316ea393c6ce9c541abf5384f4841","schema_version":"1.0","event_id":"sha256:9cbe14eb14c39fc6d25cfd3efb3bce11238316ea393c6ce9c541abf5384f4841"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:EGQLOQOX7NWZYOFZVNDTXJ5C7X","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Confinement controls the creep rate in soft granular packings","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.soft","authors_text":"Joshua A. Dijksman, Tom Mullin","submitted_at":"2024-04-08T16:21:53Z","abstract_excerpt":"Flow in soft materials encompasses a wide range of viscous, plastic and elastic phenomena which provide challenges to modelling at the microscopic level. To create a controlled flow, we perform falling ball viscometry tests on packings of soft, frictionless hydrogel spheres. Systematic creep flow is found when a controlled driving stress is applied to a sinking sphere embedded in a packing. Here, we take the novel approach of applying an additional global confinement stress to the packing using an external load. This has enabled us to identify two distinct creep regimes. When confinement stres"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2404.05642","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/2404.05642/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":"2026-07-05T09:16:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KPWr7jIgPNYF+uQ+vDY9w57vr0YbJsScJ2bkPKtb7oMw2FxoDo7j5W3u8Tv73WjsYRRiqBhVnpMrd1bMCWxtDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T22:02:54.647176Z"},"content_sha256":"73b9c0712f2de72540dd64b4a8f5c9b62fc879222278b67053aed0df0b7b34af","schema_version":"1.0","event_id":"sha256:73b9c0712f2de72540dd64b4a8f5c9b62fc879222278b67053aed0df0b7b34af"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EGQLOQOX7NWZYOFZVNDTXJ5C7X/bundle.json","state_url":"https://pith.science/pith/EGQLOQOX7NWZYOFZVNDTXJ5C7X/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EGQLOQOX7NWZYOFZVNDTXJ5C7X/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":"2026-08-03T22:02:54Z","links":{"resolver":"https://pith.science/pith/EGQLOQOX7NWZYOFZVNDTXJ5C7X","bundle":"https://pith.science/pith/EGQLOQOX7NWZYOFZVNDTXJ5C7X/bundle.json","state":"https://pith.science/pith/EGQLOQOX7NWZYOFZVNDTXJ5C7X/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EGQLOQOX7NWZYOFZVNDTXJ5C7X/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:EGQLOQOX7NWZYOFZVNDTXJ5C7X","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":"90dc1da2534d458ed4094cf18d7d1e899a3b0fc9e8a3f27b2351d8dd347a4cdd","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.soft","submitted_at":"2024-04-08T16:21:53Z","title_canon_sha256":"500131123222753695449e0c6efe8264233b982ee031fa16b559af201f3865dc"},"schema_version":"1.0","source":{"id":"2404.05642","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2404.05642","created_at":"2026-07-05T09:16:14Z"},{"alias_kind":"arxiv_version","alias_value":"2404.05642v1","created_at":"2026-07-05T09:16:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2404.05642","created_at":"2026-07-05T09:16:14Z"},{"alias_kind":"pith_short_12","alias_value":"EGQLOQOX7NWZ","created_at":"2026-07-05T09:16:14Z"},{"alias_kind":"pith_short_16","alias_value":"EGQLOQOX7NWZYOFZ","created_at":"2026-07-05T09:16:14Z"},{"alias_kind":"pith_short_8","alias_value":"EGQLOQOX","created_at":"2026-07-05T09:16:14Z"}],"graph_snapshots":[{"event_id":"sha256:73b9c0712f2de72540dd64b4a8f5c9b62fc879222278b67053aed0df0b7b34af","target":"graph","created_at":"2026-07-05T09:16:14Z","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/2404.05642/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Flow in soft materials encompasses a wide range of viscous, plastic and elastic phenomena which provide challenges to modelling at the microscopic level. To create a controlled flow, we perform falling ball viscometry tests on packings of soft, frictionless hydrogel spheres. Systematic creep flow is found when a controlled driving stress is applied to a sinking sphere embedded in a packing. Here, we take the novel approach of applying an additional global confinement stress to the packing using an external load. This has enabled us to identify two distinct creep regimes. When confinement stres","authors_text":"Joshua A. Dijksman, Tom Mullin","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.soft","submitted_at":"2024-04-08T16:21:53Z","title":"Confinement controls the creep rate in soft granular packings"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2404.05642","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":"sha256:9cbe14eb14c39fc6d25cfd3efb3bce11238316ea393c6ce9c541abf5384f4841","target":"record","created_at":"2026-07-05T09:16:14Z","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":"90dc1da2534d458ed4094cf18d7d1e899a3b0fc9e8a3f27b2351d8dd347a4cdd","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.soft","submitted_at":"2024-04-08T16:21:53Z","title_canon_sha256":"500131123222753695449e0c6efe8264233b982ee031fa16b559af201f3865dc"},"schema_version":"1.0","source":{"id":"2404.05642","kind":"arxiv","version":1}},"canonical_sha256":"21a0b741d7fb6d9c38b9ab473ba7a2fdcfe65f6e6946aed4200f4c49c7795693","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"21a0b741d7fb6d9c38b9ab473ba7a2fdcfe65f6e6946aed4200f4c49c7795693","first_computed_at":"2026-07-05T09:16:14.342969Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T09:16:14.342969Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"tRGQWMBkbFu3bGGft+3GvJexaT29RjxE4TbwBeodAp8qijjPEZvB4y5YoV26w5J0uhFKip1ht3gdmfGvfOq9Aw==","signature_status":"signed_v1","signed_at":"2026-07-05T09:16:14.343445Z","signed_message":"canonical_sha256_bytes"},"source_id":"2404.05642","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9cbe14eb14c39fc6d25cfd3efb3bce11238316ea393c6ce9c541abf5384f4841","sha256:73b9c0712f2de72540dd64b4a8f5c9b62fc879222278b67053aed0df0b7b34af"],"state_sha256":"38f78a833599220f36cda5bf95bd6755b2eaa5358fa0e28c4ce2af624ebec39d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OhREvT2B0ssNuMkq/g57Ygm+C447NdTbcqo2/8oc3K800uncdevYyXiG9p8+EQX+Z83UROAmmQwiRkFBls8kAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T22:02:54.653678Z","bundle_sha256":"3ed718a790e4b7dc99530856197de9b07b6ee2088f044b612db0dfd1134d3c0b"}}