{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:B2QVTOXD6STTECQBMUGAQDHH3V","short_pith_number":"pith:B2QVTOXD","canonical_record":{"source":{"id":"2012.09827","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.soft","submitted_at":"2020-12-17T18:50:53Z","cross_cats_sorted":[],"title_canon_sha256":"f115b9f6888886eea4994027dd2feb5e4351ad7db7b321ed41635c9640df465f","abstract_canon_sha256":"13a6f86ba2fdd2741980050e2c6144565926ae3f1290fcd8f99ecb8d523bf75f"},"schema_version":"1.0"},"canonical_sha256":"0ea159bae3f4a7320a01650c080ce7dd6f64146849a927f662f5fd4a5b3e6879","source":{"kind":"arxiv","id":"2012.09827","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2012.09827","created_at":"2026-07-05T02:04:14Z"},{"alias_kind":"arxiv_version","alias_value":"2012.09827v1","created_at":"2026-07-05T02:04:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2012.09827","created_at":"2026-07-05T02:04:14Z"},{"alias_kind":"pith_short_12","alias_value":"B2QVTOXD6STT","created_at":"2026-07-05T02:04:14Z"},{"alias_kind":"pith_short_16","alias_value":"B2QVTOXD6STTECQB","created_at":"2026-07-05T02:04:14Z"},{"alias_kind":"pith_short_8","alias_value":"B2QVTOXD","created_at":"2026-07-05T02:04:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:B2QVTOXD6STTECQBMUGAQDHH3V","target":"record","payload":{"canonical_record":{"source":{"id":"2012.09827","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.soft","submitted_at":"2020-12-17T18:50:53Z","cross_cats_sorted":[],"title_canon_sha256":"f115b9f6888886eea4994027dd2feb5e4351ad7db7b321ed41635c9640df465f","abstract_canon_sha256":"13a6f86ba2fdd2741980050e2c6144565926ae3f1290fcd8f99ecb8d523bf75f"},"schema_version":"1.0"},"canonical_sha256":"0ea159bae3f4a7320a01650c080ce7dd6f64146849a927f662f5fd4a5b3e6879","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:04:14.152227Z","signature_b64":"1iev9atoOgsQpa3RhwPT1d3ZQU5Vae/f11qloFHe/WbeLdrHCQyGCl1Whrf22dQKm84QCYiKJbJsBcibUe+MDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0ea159bae3f4a7320a01650c080ce7dd6f64146849a927f662f5fd4a5b3e6879","last_reissued_at":"2026-07-05T02:04:14.151844Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:04:14.151844Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2012.09827","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":"2026-07-05T02:04:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pByrwXsbSVO1vG8GnmDHGgsKLTA/Ug6+M48Je9VlR3gGhy6Ad5YHkKIqX1HJ2EH/GQNYa4NPWuYC6FKt9Vs6DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-31T19:36:18.542989Z"},"content_sha256":"2fcd74b7caf2e81bf21386030e5f31050f18bb74a6f65c50370ac12ade788923","schema_version":"1.0","event_id":"sha256:2fcd74b7caf2e81bf21386030e5f31050f18bb74a6f65c50370ac12ade788923"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:B2QVTOXD6STTECQBMUGAQDHH3V","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Role of normal stress in the creep dynamics and failure of a biopolymer gel","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.soft","authors_text":"Angelo Pommella, Laurence Ramos, Luca Cipelletti","submitted_at":"2020-12-17T18:50:53Z","abstract_excerpt":"We investigate the delayed rupture of biopolymer gels under a constant shear load by simultaneous dynamic light scattering and rheology measurements. We unveil the crucial role of normal stresses built up during gelation: all samples that eventually fracture self-weaken during the gelation process, as revealed by a partial relaxation of the normal stress concomitant to a burst of microscopic plastic rearrangements. Upon applying a shear stress, weakened gels exhibit in the creep regime distinctive signatures in their microscopic dynamics, which anticipate macroscopic fracture by up to thousand"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2012.09827","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/2012.09827/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":"2026-07-05T02:04:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lySERHWrDCrUqIYlZl+ffiFU5lBkvK982x7GiBPncWTC3cD85qJk5Xya/q1v7lFY2rked0m76wBDcTL6cnsFBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-31T19:36:18.543440Z"},"content_sha256":"e615c353eb44dcc2c0c07a42addf428a37b58051dc623c9efbbb0cc05bb1c283","schema_version":"1.0","event_id":"sha256:e615c353eb44dcc2c0c07a42addf428a37b58051dc623c9efbbb0cc05bb1c283"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/B2QVTOXD6STTECQBMUGAQDHH3V/bundle.json","state_url":"https://pith.science/pith/B2QVTOXD6STTECQBMUGAQDHH3V/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/B2QVTOXD6STTECQBMUGAQDHH3V/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":"2026-07-31T19:36:18Z","links":{"resolver":"https://pith.science/pith/B2QVTOXD6STTECQBMUGAQDHH3V","bundle":"https://pith.science/pith/B2QVTOXD6STTECQBMUGAQDHH3V/bundle.json","state":"https://pith.science/pith/B2QVTOXD6STTECQBMUGAQDHH3V/state.json","well_known_bundle":"https://pith.science/.well-known/pith/B2QVTOXD6STTECQBMUGAQDHH3V/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:B2QVTOXD6STTECQBMUGAQDHH3V","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":"13a6f86ba2fdd2741980050e2c6144565926ae3f1290fcd8f99ecb8d523bf75f","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.soft","submitted_at":"2020-12-17T18:50:53Z","title_canon_sha256":"f115b9f6888886eea4994027dd2feb5e4351ad7db7b321ed41635c9640df465f"},"schema_version":"1.0","source":{"id":"2012.09827","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2012.09827","created_at":"2026-07-05T02:04:14Z"},{"alias_kind":"arxiv_version","alias_value":"2012.09827v1","created_at":"2026-07-05T02:04:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2012.09827","created_at":"2026-07-05T02:04:14Z"},{"alias_kind":"pith_short_12","alias_value":"B2QVTOXD6STT","created_at":"2026-07-05T02:04:14Z"},{"alias_kind":"pith_short_16","alias_value":"B2QVTOXD6STTECQB","created_at":"2026-07-05T02:04:14Z"},{"alias_kind":"pith_short_8","alias_value":"B2QVTOXD","created_at":"2026-07-05T02:04:14Z"}],"graph_snapshots":[{"event_id":"sha256:e615c353eb44dcc2c0c07a42addf428a37b58051dc623c9efbbb0cc05bb1c283","target":"graph","created_at":"2026-07-05T02:04:14Z","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/2012.09827/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We investigate the delayed rupture of biopolymer gels under a constant shear load by simultaneous dynamic light scattering and rheology measurements. We unveil the crucial role of normal stresses built up during gelation: all samples that eventually fracture self-weaken during the gelation process, as revealed by a partial relaxation of the normal stress concomitant to a burst of microscopic plastic rearrangements. Upon applying a shear stress, weakened gels exhibit in the creep regime distinctive signatures in their microscopic dynamics, which anticipate macroscopic fracture by up to thousand","authors_text":"Angelo Pommella, Laurence Ramos, Luca Cipelletti","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.soft","submitted_at":"2020-12-17T18:50:53Z","title":"Role of normal stress in the creep dynamics and failure of a biopolymer gel"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2012.09827","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":"sha256:2fcd74b7caf2e81bf21386030e5f31050f18bb74a6f65c50370ac12ade788923","target":"record","created_at":"2026-07-05T02:04:14Z","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":"13a6f86ba2fdd2741980050e2c6144565926ae3f1290fcd8f99ecb8d523bf75f","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.soft","submitted_at":"2020-12-17T18:50:53Z","title_canon_sha256":"f115b9f6888886eea4994027dd2feb5e4351ad7db7b321ed41635c9640df465f"},"schema_version":"1.0","source":{"id":"2012.09827","kind":"arxiv","version":1}},"canonical_sha256":"0ea159bae3f4a7320a01650c080ce7dd6f64146849a927f662f5fd4a5b3e6879","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0ea159bae3f4a7320a01650c080ce7dd6f64146849a927f662f5fd4a5b3e6879","first_computed_at":"2026-07-05T02:04:14.151844Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:04:14.151844Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1iev9atoOgsQpa3RhwPT1d3ZQU5Vae/f11qloFHe/WbeLdrHCQyGCl1Whrf22dQKm84QCYiKJbJsBcibUe+MDA==","signature_status":"signed_v1","signed_at":"2026-07-05T02:04:14.152227Z","signed_message":"canonical_sha256_bytes"},"source_id":"2012.09827","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2fcd74b7caf2e81bf21386030e5f31050f18bb74a6f65c50370ac12ade788923","sha256:e615c353eb44dcc2c0c07a42addf428a37b58051dc623c9efbbb0cc05bb1c283"],"state_sha256":"172d32bc8a0e636cc7485184635ff38e20021e72ae5e6efd3bc1c860dc5891da"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jOJMQT2lbCJ1q7UzyvH3t08OJQyK3aJciBR4s4qGt3zk2nH0r56l1a24RG+VlEYpcrDI4HkWwaZ0VaTlP6fEAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-31T19:36:18.569123Z","bundle_sha256":"40f7ad480b4088c98f466e90e96df981227a4eb39183745159664216c3fbdfa6"}}