{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:PR2ABIM7DLRMZTOCYKQNFB7WGH","short_pith_number":"pith:PR2ABIM7","canonical_record":{"source":{"id":"2505.21075","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cond-mat.soft","submitted_at":"2025-05-27T12:00:37Z","cross_cats_sorted":[],"title_canon_sha256":"5126afbe35590f4b28af14157cf6159689d0de2edf8107be990a951ab942d434","abstract_canon_sha256":"339d328059d6b253d545800750dd23b5a80c6e553e1d424d02794e2e292862fb"},"schema_version":"1.0"},"canonical_sha256":"7c7400a19f1ae2cccdc2c2a0d287f631c713f663ebe9dffb5ae7c8923a81b49d","source":{"kind":"arxiv","id":"2505.21075","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2505.21075","created_at":"2026-07-05T11:10:23Z"},{"alias_kind":"arxiv_version","alias_value":"2505.21075v1","created_at":"2026-07-05T11:10:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2505.21075","created_at":"2026-07-05T11:10:23Z"},{"alias_kind":"pith_short_12","alias_value":"PR2ABIM7DLRM","created_at":"2026-07-05T11:10:23Z"},{"alias_kind":"pith_short_16","alias_value":"PR2ABIM7DLRMZTOC","created_at":"2026-07-05T11:10:23Z"},{"alias_kind":"pith_short_8","alias_value":"PR2ABIM7","created_at":"2026-07-05T11:10:23Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:PR2ABIM7DLRMZTOCYKQNFB7WGH","target":"record","payload":{"canonical_record":{"source":{"id":"2505.21075","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cond-mat.soft","submitted_at":"2025-05-27T12:00:37Z","cross_cats_sorted":[],"title_canon_sha256":"5126afbe35590f4b28af14157cf6159689d0de2edf8107be990a951ab942d434","abstract_canon_sha256":"339d328059d6b253d545800750dd23b5a80c6e553e1d424d02794e2e292862fb"},"schema_version":"1.0"},"canonical_sha256":"7c7400a19f1ae2cccdc2c2a0d287f631c713f663ebe9dffb5ae7c8923a81b49d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:10:23.252096Z","signature_b64":"60XKWNnrL0cNErncPTkffCdYrARD9lEeUELTAnRfM2z4rhprXpeYpt/JQy0RFUXWerhwLmefAIyT8WJJZfKvCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7c7400a19f1ae2cccdc2c2a0d287f631c713f663ebe9dffb5ae7c8923a81b49d","last_reissued_at":"2026-07-05T11:10:23.251590Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:10:23.251590Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2505.21075","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":"2026-07-05T11:10:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MNrWCM02xZ45JruNStSMxGSEvbPyyqn6dJ02DOcUiEP4kSojXC5jRg+lt46smBV7K7KGafgUEi2n/DvOZFknBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-08T04:50:19.788145Z"},"content_sha256":"2849fac1e7d639133b8e1e26a6c9d3884a48d2f8d67a949e6e1c27943e470731","schema_version":"1.0","event_id":"sha256:2849fac1e7d639133b8e1e26a6c9d3884a48d2f8d67a949e6e1c27943e470731"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:PR2ABIM7DLRMZTOCYKQNFB7WGH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Modeling of Water Evaporation in Hydrogels from Aspect of Mechanical Analytics","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.soft","authors_text":"Kang Liu, Yongshun Ren, Zehua Yu","submitted_at":"2025-05-27T12:00:37Z","abstract_excerpt":"Water evaporation is critically important for hydrogels in open-air applications, but theoretically modeling is difficult due to the complicated intermolecular interactions and sustained deformation. In this work, we construct a simplified model to describe the state of water inside the hydrogel by only considering mechanical stretching. We employ \"negative pressure\" to bridge the stretching force in water and elastic force generated by the polymer network. Combined with a constitutive equation of elasticity for hydrogels and classic diffusion equation, this model gives a universal solution to"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2505.21075","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/2505.21075/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":"2026-07-05T11:10:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+rvj8QT0EBwVRUdoIAS13gGy8rM+78didcrywsEfpfpAcLeX26Cs6I6/HMbBaARvbyIT5HcSlQ50JZwKgmkCCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-08T04:50:19.788650Z"},"content_sha256":"e15e34e40a7208e9729c7ef37d97e0bec823aac8ff53efeeed332685f87ad3cc","schema_version":"1.0","event_id":"sha256:e15e34e40a7208e9729c7ef37d97e0bec823aac8ff53efeeed332685f87ad3cc"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PR2ABIM7DLRMZTOCYKQNFB7WGH/bundle.json","state_url":"https://pith.science/pith/PR2ABIM7DLRMZTOCYKQNFB7WGH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PR2ABIM7DLRMZTOCYKQNFB7WGH/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":"2026-08-08T04:50:19Z","links":{"resolver":"https://pith.science/pith/PR2ABIM7DLRMZTOCYKQNFB7WGH","bundle":"https://pith.science/pith/PR2ABIM7DLRMZTOCYKQNFB7WGH/bundle.json","state":"https://pith.science/pith/PR2ABIM7DLRMZTOCYKQNFB7WGH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PR2ABIM7DLRMZTOCYKQNFB7WGH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:PR2ABIM7DLRMZTOCYKQNFB7WGH","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":"339d328059d6b253d545800750dd23b5a80c6e553e1d424d02794e2e292862fb","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cond-mat.soft","submitted_at":"2025-05-27T12:00:37Z","title_canon_sha256":"5126afbe35590f4b28af14157cf6159689d0de2edf8107be990a951ab942d434"},"schema_version":"1.0","source":{"id":"2505.21075","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2505.21075","created_at":"2026-07-05T11:10:23Z"},{"alias_kind":"arxiv_version","alias_value":"2505.21075v1","created_at":"2026-07-05T11:10:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2505.21075","created_at":"2026-07-05T11:10:23Z"},{"alias_kind":"pith_short_12","alias_value":"PR2ABIM7DLRM","created_at":"2026-07-05T11:10:23Z"},{"alias_kind":"pith_short_16","alias_value":"PR2ABIM7DLRMZTOC","created_at":"2026-07-05T11:10:23Z"},{"alias_kind":"pith_short_8","alias_value":"PR2ABIM7","created_at":"2026-07-05T11:10:23Z"}],"graph_snapshots":[{"event_id":"sha256:e15e34e40a7208e9729c7ef37d97e0bec823aac8ff53efeeed332685f87ad3cc","target":"graph","created_at":"2026-07-05T11:10:23Z","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/2505.21075/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Water evaporation is critically important for hydrogels in open-air applications, but theoretically modeling is difficult due to the complicated intermolecular interactions and sustained deformation. In this work, we construct a simplified model to describe the state of water inside the hydrogel by only considering mechanical stretching. We employ \"negative pressure\" to bridge the stretching force in water and elastic force generated by the polymer network. Combined with a constitutive equation of elasticity for hydrogels and classic diffusion equation, this model gives a universal solution to","authors_text":"Kang Liu, Yongshun Ren, Zehua Yu","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cond-mat.soft","submitted_at":"2025-05-27T12:00:37Z","title":"Modeling of Water Evaporation in Hydrogels from Aspect of Mechanical Analytics"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2505.21075","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":"sha256:2849fac1e7d639133b8e1e26a6c9d3884a48d2f8d67a949e6e1c27943e470731","target":"record","created_at":"2026-07-05T11:10:23Z","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":"339d328059d6b253d545800750dd23b5a80c6e553e1d424d02794e2e292862fb","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cond-mat.soft","submitted_at":"2025-05-27T12:00:37Z","title_canon_sha256":"5126afbe35590f4b28af14157cf6159689d0de2edf8107be990a951ab942d434"},"schema_version":"1.0","source":{"id":"2505.21075","kind":"arxiv","version":1}},"canonical_sha256":"7c7400a19f1ae2cccdc2c2a0d287f631c713f663ebe9dffb5ae7c8923a81b49d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7c7400a19f1ae2cccdc2c2a0d287f631c713f663ebe9dffb5ae7c8923a81b49d","first_computed_at":"2026-07-05T11:10:23.251590Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:10:23.251590Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"60XKWNnrL0cNErncPTkffCdYrARD9lEeUELTAnRfM2z4rhprXpeYpt/JQy0RFUXWerhwLmefAIyT8WJJZfKvCw==","signature_status":"signed_v1","signed_at":"2026-07-05T11:10:23.252096Z","signed_message":"canonical_sha256_bytes"},"source_id":"2505.21075","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2849fac1e7d639133b8e1e26a6c9d3884a48d2f8d67a949e6e1c27943e470731","sha256:e15e34e40a7208e9729c7ef37d97e0bec823aac8ff53efeeed332685f87ad3cc"],"state_sha256":"73c8a499593bc331057984c9bec1682ebfecbb112942cbf379c0dd77bb28aad4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BYQCMkKZjzqzrup9yEqFEqeIplT/9jNpq98HuI2/ZmfsTpRt6F8zpaRP4nltxOKMSkAbGUr59tMysn8oyXAMDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-08T04:50:19.793042Z","bundle_sha256":"0bac68461c8bf537e75e9d8129e9c1467969650f2158dcc625f518afa3c64bf4"}}