{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:JGDYPNB4YLPSKJD2BQTLHD3BC2","short_pith_number":"pith:JGDYPNB4","canonical_record":{"source":{"id":"1711.00452","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2017-11-01T17:37:36Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"5b810497e9ea6f77e49ef53e6e4a0507789df2429643d19b6914659d823dbb0f","abstract_canon_sha256":"4f61cb49e3e5a63f90e5c4722608d8d9086eb4ba35e67a092045234ebbb3b5de"},"schema_version":"1.0"},"canonical_sha256":"498787b43cc2df25247a0c26b38f6116b3f048f823c9a0b9adb590e167492493","source":{"kind":"arxiv","id":"1711.00452","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1711.00452","created_at":"2026-05-18T00:31:32Z"},{"alias_kind":"arxiv_version","alias_value":"1711.00452v1","created_at":"2026-05-18T00:31:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1711.00452","created_at":"2026-05-18T00:31:32Z"},{"alias_kind":"pith_short_12","alias_value":"JGDYPNB4YLPS","created_at":"2026-05-18T12:31:24Z"},{"alias_kind":"pith_short_16","alias_value":"JGDYPNB4YLPSKJD2","created_at":"2026-05-18T12:31:24Z"},{"alias_kind":"pith_short_8","alias_value":"JGDYPNB4","created_at":"2026-05-18T12:31:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:JGDYPNB4YLPSKJD2BQTLHD3BC2","target":"record","payload":{"canonical_record":{"source":{"id":"1711.00452","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2017-11-01T17:37:36Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"5b810497e9ea6f77e49ef53e6e4a0507789df2429643d19b6914659d823dbb0f","abstract_canon_sha256":"4f61cb49e3e5a63f90e5c4722608d8d9086eb4ba35e67a092045234ebbb3b5de"},"schema_version":"1.0"},"canonical_sha256":"498787b43cc2df25247a0c26b38f6116b3f048f823c9a0b9adb590e167492493","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:31:32.045267Z","signature_b64":"LiqVE91acXEbXSh6bgRVApUBsgFwbXhAtQ16x7AjlEeXZSF0fCddY26a8U784FJZNZR6LPk0LtXvCW9kYWK6Dg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"498787b43cc2df25247a0c26b38f6116b3f048f823c9a0b9adb590e167492493","last_reissued_at":"2026-05-18T00:31:32.044765Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:31:32.044765Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1711.00452","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":"2026-05-18T00:31:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"idHqtIZBA/+CBdjEb6wBR03hIYCrn04iJdKsOsmAJheSfZf1FktvJihrY3Cueq/RbjAqfBBwmOp35lztHwtOAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T15:59:06.923040Z"},"content_sha256":"dc25f0caf3f5637777678d01d703d8ce486274a0670dde568ced3d9f9e18d508","schema_version":"1.0","event_id":"sha256:dc25f0caf3f5637777678d01d703d8ce486274a0670dde568ced3d9f9e18d508"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:JGDYPNB4YLPSKJD2BQTLHD3BC2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"An Autonomous Programmable Actuator and Shape Reconfigurable Structures using Bistability and Shape Memory Polymers","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"physics.app-ph","authors_text":"Kristina Shea, Tian Chen","submitted_at":"2017-11-01T17:37:36Z","abstract_excerpt":"Autonomous deployment and shape reconfiguration of structures is a crucial field of research in space exploration with emerging applications in the automotive, building and biomedical industries. Challenges in achieving autonomy include: bulky energy sources, imprecise deployment, jamming of components and lack of structural integrity. Leveraging advances in the fields of shape memory polymers, bistability and 3D multi-material printing, we present a 3D printed programmable actuator that enables the autonomous deployment and shape reconfiguration of structures activated though surrounding temp"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.00452","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":"2026-05-18T00:31:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"B19mp3uCnn0h66eM57zV9kNPZuJGUR6vfFGl2uAdXGbl8fsws+ZHVOrZn3uD/8ZV16uD0nEU9f5Dt6syydFQAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T15:59:06.923436Z"},"content_sha256":"ceaf806301f20321312e7f3dff8f4bf856a0447f95e882c509c5bccd4686cefa","schema_version":"1.0","event_id":"sha256:ceaf806301f20321312e7f3dff8f4bf856a0447f95e882c509c5bccd4686cefa"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JGDYPNB4YLPSKJD2BQTLHD3BC2/bundle.json","state_url":"https://pith.science/pith/JGDYPNB4YLPSKJD2BQTLHD3BC2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JGDYPNB4YLPSKJD2BQTLHD3BC2/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":"2026-06-06T15:59:06Z","links":{"resolver":"https://pith.science/pith/JGDYPNB4YLPSKJD2BQTLHD3BC2","bundle":"https://pith.science/pith/JGDYPNB4YLPSKJD2BQTLHD3BC2/bundle.json","state":"https://pith.science/pith/JGDYPNB4YLPSKJD2BQTLHD3BC2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JGDYPNB4YLPSKJD2BQTLHD3BC2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:JGDYPNB4YLPSKJD2BQTLHD3BC2","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":"4f61cb49e3e5a63f90e5c4722608d8d9086eb4ba35e67a092045234ebbb3b5de","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2017-11-01T17:37:36Z","title_canon_sha256":"5b810497e9ea6f77e49ef53e6e4a0507789df2429643d19b6914659d823dbb0f"},"schema_version":"1.0","source":{"id":"1711.00452","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1711.00452","created_at":"2026-05-18T00:31:32Z"},{"alias_kind":"arxiv_version","alias_value":"1711.00452v1","created_at":"2026-05-18T00:31:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1711.00452","created_at":"2026-05-18T00:31:32Z"},{"alias_kind":"pith_short_12","alias_value":"JGDYPNB4YLPS","created_at":"2026-05-18T12:31:24Z"},{"alias_kind":"pith_short_16","alias_value":"JGDYPNB4YLPSKJD2","created_at":"2026-05-18T12:31:24Z"},{"alias_kind":"pith_short_8","alias_value":"JGDYPNB4","created_at":"2026-05-18T12:31:24Z"}],"graph_snapshots":[{"event_id":"sha256:ceaf806301f20321312e7f3dff8f4bf856a0447f95e882c509c5bccd4686cefa","target":"graph","created_at":"2026-05-18T00:31:32Z","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":"Autonomous deployment and shape reconfiguration of structures is a crucial field of research in space exploration with emerging applications in the automotive, building and biomedical industries. Challenges in achieving autonomy include: bulky energy sources, imprecise deployment, jamming of components and lack of structural integrity. Leveraging advances in the fields of shape memory polymers, bistability and 3D multi-material printing, we present a 3D printed programmable actuator that enables the autonomous deployment and shape reconfiguration of structures activated though surrounding temp","authors_text":"Kristina Shea, Tian Chen","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2017-11-01T17:37:36Z","title":"An Autonomous Programmable Actuator and Shape Reconfigurable Structures using Bistability and Shape Memory Polymers"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.00452","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:dc25f0caf3f5637777678d01d703d8ce486274a0670dde568ced3d9f9e18d508","target":"record","created_at":"2026-05-18T00:31:32Z","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":"4f61cb49e3e5a63f90e5c4722608d8d9086eb4ba35e67a092045234ebbb3b5de","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2017-11-01T17:37:36Z","title_canon_sha256":"5b810497e9ea6f77e49ef53e6e4a0507789df2429643d19b6914659d823dbb0f"},"schema_version":"1.0","source":{"id":"1711.00452","kind":"arxiv","version":1}},"canonical_sha256":"498787b43cc2df25247a0c26b38f6116b3f048f823c9a0b9adb590e167492493","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"498787b43cc2df25247a0c26b38f6116b3f048f823c9a0b9adb590e167492493","first_computed_at":"2026-05-18T00:31:32.044765Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:31:32.044765Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"LiqVE91acXEbXSh6bgRVApUBsgFwbXhAtQ16x7AjlEeXZSF0fCddY26a8U784FJZNZR6LPk0LtXvCW9kYWK6Dg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:31:32.045267Z","signed_message":"canonical_sha256_bytes"},"source_id":"1711.00452","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:dc25f0caf3f5637777678d01d703d8ce486274a0670dde568ced3d9f9e18d508","sha256:ceaf806301f20321312e7f3dff8f4bf856a0447f95e882c509c5bccd4686cefa"],"state_sha256":"724cbbd01a063e7a6f43f8e05951169a2fc1858ded3b0358fa35385d2d0255a7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AjxLgSQX3uZEkCED4tU1LOExqKqu2nfEsTcYicpdIepRfQKNbb189La9nBZMrNOQkBcJ1bW4Bj1B1sti31YACw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-06T15:59:06.925427Z","bundle_sha256":"32ed27c9882299fe4aa7d881d89710ee00b4cc14950e5ed5e7f41410371d7ff4"}}