{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:QT4NKILQFKQUZKJ4AM7TKHSRDK","short_pith_number":"pith:QT4NKILQ","canonical_record":{"source":{"id":"1402.0262","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2014-02-02T23:33:13Z","cross_cats_sorted":[],"title_canon_sha256":"6f3fd98aad4ee80d248776ce46cdbf33465b032b01a8feb4ea84fe4705c8f8b4","abstract_canon_sha256":"eec69c92a8d5befa5e5eb21e9231ae4176117d83cbd8122d5dbfa4ff36da78bb"},"schema_version":"1.0"},"canonical_sha256":"84f8d521702aa14ca93c033f351e511aa471b61e85be3638a5bc3131566e1dc1","source":{"kind":"arxiv","id":"1402.0262","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1402.0262","created_at":"2026-05-18T03:00:24Z"},{"alias_kind":"arxiv_version","alias_value":"1402.0262v1","created_at":"2026-05-18T03:00:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1402.0262","created_at":"2026-05-18T03:00:24Z"},{"alias_kind":"pith_short_12","alias_value":"QT4NKILQFKQU","created_at":"2026-05-18T12:28:46Z"},{"alias_kind":"pith_short_16","alias_value":"QT4NKILQFKQUZKJ4","created_at":"2026-05-18T12:28:46Z"},{"alias_kind":"pith_short_8","alias_value":"QT4NKILQ","created_at":"2026-05-18T12:28:46Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:QT4NKILQFKQUZKJ4AM7TKHSRDK","target":"record","payload":{"canonical_record":{"source":{"id":"1402.0262","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2014-02-02T23:33:13Z","cross_cats_sorted":[],"title_canon_sha256":"6f3fd98aad4ee80d248776ce46cdbf33465b032b01a8feb4ea84fe4705c8f8b4","abstract_canon_sha256":"eec69c92a8d5befa5e5eb21e9231ae4176117d83cbd8122d5dbfa4ff36da78bb"},"schema_version":"1.0"},"canonical_sha256":"84f8d521702aa14ca93c033f351e511aa471b61e85be3638a5bc3131566e1dc1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:00:24.110604Z","signature_b64":"NozaA/LWBjqj1fj9ncsgYKXRw3yPOiO0xxjLtGycxXmdcyLw+EY963ShErCkNXXW+6Jr5QSCtSVc98XPt51tBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"84f8d521702aa14ca93c033f351e511aa471b61e85be3638a5bc3131566e1dc1","last_reissued_at":"2026-05-18T03:00:24.109638Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:00:24.109638Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1402.0262","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":"2026-05-18T03:00:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"o8ZSF//4hwf21HXT7oX4xsAgG6H2XQ3Z+HEPdXdJbkSjaoxHn3qjNRMzANBlp5ICpxEgwzSPgqwt0BdOb8tSAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T19:55:06.927723Z"},"content_sha256":"138140cfecf0ac53e38addc4e2868eb5a855c23e2868f1b6b10b98d01284bffb","schema_version":"1.0","event_id":"sha256:138140cfecf0ac53e38addc4e2868eb5a855c23e2868f1b6b10b98d01284bffb"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:QT4NKILQFKQUZKJ4AM7TKHSRDK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"How a Blister Heals","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.soft","authors_text":"Jonathan E. Longley, L. Mahadevan, Manoj K. Chaudhury","submitted_at":"2014-02-02T23:33:13Z","abstract_excerpt":"We use experiments to study the dynamics of the healing of a blister, a localized bump in a thin elastic layer that is adhered to a soft substrate everywhere except at the bump. We create a blister by gently placing a glass cover slip on a PDMS substrate. The pressure jump across the elastic layer drives fluid flow through micro-channels that form at the interface between the layer and the substrate; these channels coalesce at discrete locations as the blister heals and eventually disappear at a lower critical radius. The spacing of the channel follows a simple scaling law that can be theoreti"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1402.0262","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":"2026-05-18T03:00:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Twv2pLpnwH/11asxH4G6DIYdatieDdMnQ5Wc1fYxYpNIZIy/if4CrwRPCZyLjD/4xJulahLzaT+cSerSAD6cDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T19:55:06.928083Z"},"content_sha256":"cee7e4ce6265e222aefd3fd5d6225c8c6803da3df23755f027f3ae401371d82d","schema_version":"1.0","event_id":"sha256:cee7e4ce6265e222aefd3fd5d6225c8c6803da3df23755f027f3ae401371d82d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QT4NKILQFKQUZKJ4AM7TKHSRDK/bundle.json","state_url":"https://pith.science/pith/QT4NKILQFKQUZKJ4AM7TKHSRDK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QT4NKILQFKQUZKJ4AM7TKHSRDK/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":"2026-06-02T19:55:06Z","links":{"resolver":"https://pith.science/pith/QT4NKILQFKQUZKJ4AM7TKHSRDK","bundle":"https://pith.science/pith/QT4NKILQFKQUZKJ4AM7TKHSRDK/bundle.json","state":"https://pith.science/pith/QT4NKILQFKQUZKJ4AM7TKHSRDK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QT4NKILQFKQUZKJ4AM7TKHSRDK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:QT4NKILQFKQUZKJ4AM7TKHSRDK","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":"eec69c92a8d5befa5e5eb21e9231ae4176117d83cbd8122d5dbfa4ff36da78bb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2014-02-02T23:33:13Z","title_canon_sha256":"6f3fd98aad4ee80d248776ce46cdbf33465b032b01a8feb4ea84fe4705c8f8b4"},"schema_version":"1.0","source":{"id":"1402.0262","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1402.0262","created_at":"2026-05-18T03:00:24Z"},{"alias_kind":"arxiv_version","alias_value":"1402.0262v1","created_at":"2026-05-18T03:00:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1402.0262","created_at":"2026-05-18T03:00:24Z"},{"alias_kind":"pith_short_12","alias_value":"QT4NKILQFKQU","created_at":"2026-05-18T12:28:46Z"},{"alias_kind":"pith_short_16","alias_value":"QT4NKILQFKQUZKJ4","created_at":"2026-05-18T12:28:46Z"},{"alias_kind":"pith_short_8","alias_value":"QT4NKILQ","created_at":"2026-05-18T12:28:46Z"}],"graph_snapshots":[{"event_id":"sha256:cee7e4ce6265e222aefd3fd5d6225c8c6803da3df23755f027f3ae401371d82d","target":"graph","created_at":"2026-05-18T03:00:24Z","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":"We use experiments to study the dynamics of the healing of a blister, a localized bump in a thin elastic layer that is adhered to a soft substrate everywhere except at the bump. We create a blister by gently placing a glass cover slip on a PDMS substrate. The pressure jump across the elastic layer drives fluid flow through micro-channels that form at the interface between the layer and the substrate; these channels coalesce at discrete locations as the blister heals and eventually disappear at a lower critical radius. The spacing of the channel follows a simple scaling law that can be theoreti","authors_text":"Jonathan E. Longley, L. Mahadevan, Manoj K. Chaudhury","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2014-02-02T23:33:13Z","title":"How a Blister Heals"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1402.0262","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":"sha256:138140cfecf0ac53e38addc4e2868eb5a855c23e2868f1b6b10b98d01284bffb","target":"record","created_at":"2026-05-18T03:00:24Z","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":"eec69c92a8d5befa5e5eb21e9231ae4176117d83cbd8122d5dbfa4ff36da78bb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2014-02-02T23:33:13Z","title_canon_sha256":"6f3fd98aad4ee80d248776ce46cdbf33465b032b01a8feb4ea84fe4705c8f8b4"},"schema_version":"1.0","source":{"id":"1402.0262","kind":"arxiv","version":1}},"canonical_sha256":"84f8d521702aa14ca93c033f351e511aa471b61e85be3638a5bc3131566e1dc1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"84f8d521702aa14ca93c033f351e511aa471b61e85be3638a5bc3131566e1dc1","first_computed_at":"2026-05-18T03:00:24.109638Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:00:24.109638Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"NozaA/LWBjqj1fj9ncsgYKXRw3yPOiO0xxjLtGycxXmdcyLw+EY963ShErCkNXXW+6Jr5QSCtSVc98XPt51tBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:00:24.110604Z","signed_message":"canonical_sha256_bytes"},"source_id":"1402.0262","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:138140cfecf0ac53e38addc4e2868eb5a855c23e2868f1b6b10b98d01284bffb","sha256:cee7e4ce6265e222aefd3fd5d6225c8c6803da3df23755f027f3ae401371d82d"],"state_sha256":"a9a4a04c4997a6536aeb65e69fc5dad9fa3c86d38a4bb05f174a264f3ed0df59"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qJb3a7cjj2qYy3jlzST3J1NZ0NYIo2nKtPixZyVW227DyztQx/XDun73Ob6lUk4ezPgH8WjXVeuQz06zp2gaBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T19:55:06.930119Z","bundle_sha256":"e787901a95eef3071d929c759e58e65932deaaf7819f008f41b100d950f004c1"}}