{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:GEYN6LDTFZ7HHH6ZCZVU4F62NX","short_pith_number":"pith:GEYN6LDT","canonical_record":{"source":{"id":"1305.1218","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2013-05-06T15:06:48Z","cross_cats_sorted":["cond-mat.mtrl-sci","physics.bio-ph"],"title_canon_sha256":"ea28ca5a3174560d8b8b48779606bc996a5c87e7340b418f3c92091e3d121cea","abstract_canon_sha256":"e0723f4837793ebb9dd84bc4a7094b5d87a3aebd8a07b6f523525c9456b54452"},"schema_version":"1.0"},"canonical_sha256":"3130df2c732e7e739fd9166b4e17da6df2ed6fc558404a954acb96be6bebac03","source":{"kind":"arxiv","id":"1305.1218","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1305.1218","created_at":"2026-05-18T01:50:11Z"},{"alias_kind":"arxiv_version","alias_value":"1305.1218v1","created_at":"2026-05-18T01:50:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1305.1218","created_at":"2026-05-18T01:50:11Z"},{"alias_kind":"pith_short_12","alias_value":"GEYN6LDTFZ7H","created_at":"2026-05-18T12:27:45Z"},{"alias_kind":"pith_short_16","alias_value":"GEYN6LDTFZ7HHH6Z","created_at":"2026-05-18T12:27:45Z"},{"alias_kind":"pith_short_8","alias_value":"GEYN6LDT","created_at":"2026-05-18T12:27:45Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:GEYN6LDTFZ7HHH6ZCZVU4F62NX","target":"record","payload":{"canonical_record":{"source":{"id":"1305.1218","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2013-05-06T15:06:48Z","cross_cats_sorted":["cond-mat.mtrl-sci","physics.bio-ph"],"title_canon_sha256":"ea28ca5a3174560d8b8b48779606bc996a5c87e7340b418f3c92091e3d121cea","abstract_canon_sha256":"e0723f4837793ebb9dd84bc4a7094b5d87a3aebd8a07b6f523525c9456b54452"},"schema_version":"1.0"},"canonical_sha256":"3130df2c732e7e739fd9166b4e17da6df2ed6fc558404a954acb96be6bebac03","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:50:11.743353Z","signature_b64":"IyF0d8SkybzHX87SVqlgohy6TdFKyJZYqChaAtIafTw/kvOEeCHnXsBET3kQ76u+FCHUsuQCfkVyMEpLKo/pAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3130df2c732e7e739fd9166b4e17da6df2ed6fc558404a954acb96be6bebac03","last_reissued_at":"2026-05-18T01:50:11.742698Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:50:11.742698Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1305.1218","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":"2026-05-18T01:50:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RC9tyzy1qcLeaEcdNllNSGBgGPxSRLajYfqh19Y4cL9xqx2Ib7d+2+HUo3MLjGWCDE6d2NKY7enRlOvpGlA8Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T22:11:43.681998Z"},"content_sha256":"a8b12d388ca7d7a625abd03361d946adcbc3dceeeb9141fe29ef1014551d3c0a","schema_version":"1.0","event_id":"sha256:a8b12d388ca7d7a625abd03361d946adcbc3dceeeb9141fe29ef1014551d3c0a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:GEYN6LDTFZ7HHH6ZCZVU4F62NX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Guided Neuronal Growth on Arrays of Biofunctionalized GaAs/InGaAs Semiconductor Microtubes","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci","physics.bio-ph"],"primary_cat":"cond-mat.soft","authors_text":"Amanda Price, Aune Koitm\\\"ae, Christian Heyn, Cornelius S. Bausch, David Sonnenberg, Eric Stava, Erik W. Dent, Justin C. Williams, Pedro J. Resto, Robert H. Blick, Yu Huang, Yuliya Stark","submitted_at":"2013-05-06T15:06:48Z","abstract_excerpt":"We demonstrate embedded growth of cortical mouse neurons in dense arrays of semiconductor microtubes. The microtubes, fabricated from a strained GaAs/InGaAs heterostructure, guide axon growth through them and enable electrical and optical probing of propagating action potentials. The coaxial nature of the microtubes -- similar to myelin -- is expected to enhance the signal transduction along the axon. We present a technique of suppressing arsenic toxicity and prove the success of this technique by overgrowing neuronal mouse cells."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1305.1218","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":"2026-05-18T01:50:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Yj4dP4wkRda9U21CoiPEEn8XRPdYjS17BtHg5eBjeF5qcu5noxrgxI0j/C9I51taLpeezAr6jFER0o7BG53nCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T22:11:43.682410Z"},"content_sha256":"66f9f6b65317f614d9734bb5a486851a48aaeccbc16786b48f0c42d2d9538651","schema_version":"1.0","event_id":"sha256:66f9f6b65317f614d9734bb5a486851a48aaeccbc16786b48f0c42d2d9538651"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GEYN6LDTFZ7HHH6ZCZVU4F62NX/bundle.json","state_url":"https://pith.science/pith/GEYN6LDTFZ7HHH6ZCZVU4F62NX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GEYN6LDTFZ7HHH6ZCZVU4F62NX/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":"2026-06-02T22:11:43Z","links":{"resolver":"https://pith.science/pith/GEYN6LDTFZ7HHH6ZCZVU4F62NX","bundle":"https://pith.science/pith/GEYN6LDTFZ7HHH6ZCZVU4F62NX/bundle.json","state":"https://pith.science/pith/GEYN6LDTFZ7HHH6ZCZVU4F62NX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GEYN6LDTFZ7HHH6ZCZVU4F62NX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:GEYN6LDTFZ7HHH6ZCZVU4F62NX","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":"e0723f4837793ebb9dd84bc4a7094b5d87a3aebd8a07b6f523525c9456b54452","cross_cats_sorted":["cond-mat.mtrl-sci","physics.bio-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2013-05-06T15:06:48Z","title_canon_sha256":"ea28ca5a3174560d8b8b48779606bc996a5c87e7340b418f3c92091e3d121cea"},"schema_version":"1.0","source":{"id":"1305.1218","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1305.1218","created_at":"2026-05-18T01:50:11Z"},{"alias_kind":"arxiv_version","alias_value":"1305.1218v1","created_at":"2026-05-18T01:50:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1305.1218","created_at":"2026-05-18T01:50:11Z"},{"alias_kind":"pith_short_12","alias_value":"GEYN6LDTFZ7H","created_at":"2026-05-18T12:27:45Z"},{"alias_kind":"pith_short_16","alias_value":"GEYN6LDTFZ7HHH6Z","created_at":"2026-05-18T12:27:45Z"},{"alias_kind":"pith_short_8","alias_value":"GEYN6LDT","created_at":"2026-05-18T12:27:45Z"}],"graph_snapshots":[{"event_id":"sha256:66f9f6b65317f614d9734bb5a486851a48aaeccbc16786b48f0c42d2d9538651","target":"graph","created_at":"2026-05-18T01:50:11Z","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 demonstrate embedded growth of cortical mouse neurons in dense arrays of semiconductor microtubes. The microtubes, fabricated from a strained GaAs/InGaAs heterostructure, guide axon growth through them and enable electrical and optical probing of propagating action potentials. The coaxial nature of the microtubes -- similar to myelin -- is expected to enhance the signal transduction along the axon. We present a technique of suppressing arsenic toxicity and prove the success of this technique by overgrowing neuronal mouse cells.","authors_text":"Amanda Price, Aune Koitm\\\"ae, Christian Heyn, Cornelius S. Bausch, David Sonnenberg, Eric Stava, Erik W. Dent, Justin C. Williams, Pedro J. Resto, Robert H. Blick, Yu Huang, Yuliya Stark","cross_cats":["cond-mat.mtrl-sci","physics.bio-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2013-05-06T15:06:48Z","title":"Guided Neuronal Growth on Arrays of Biofunctionalized GaAs/InGaAs Semiconductor Microtubes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1305.1218","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:a8b12d388ca7d7a625abd03361d946adcbc3dceeeb9141fe29ef1014551d3c0a","target":"record","created_at":"2026-05-18T01:50:11Z","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":"e0723f4837793ebb9dd84bc4a7094b5d87a3aebd8a07b6f523525c9456b54452","cross_cats_sorted":["cond-mat.mtrl-sci","physics.bio-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2013-05-06T15:06:48Z","title_canon_sha256":"ea28ca5a3174560d8b8b48779606bc996a5c87e7340b418f3c92091e3d121cea"},"schema_version":"1.0","source":{"id":"1305.1218","kind":"arxiv","version":1}},"canonical_sha256":"3130df2c732e7e739fd9166b4e17da6df2ed6fc558404a954acb96be6bebac03","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3130df2c732e7e739fd9166b4e17da6df2ed6fc558404a954acb96be6bebac03","first_computed_at":"2026-05-18T01:50:11.742698Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:50:11.742698Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"IyF0d8SkybzHX87SVqlgohy6TdFKyJZYqChaAtIafTw/kvOEeCHnXsBET3kQ76u+FCHUsuQCfkVyMEpLKo/pAg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:50:11.743353Z","signed_message":"canonical_sha256_bytes"},"source_id":"1305.1218","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a8b12d388ca7d7a625abd03361d946adcbc3dceeeb9141fe29ef1014551d3c0a","sha256:66f9f6b65317f614d9734bb5a486851a48aaeccbc16786b48f0c42d2d9538651"],"state_sha256":"679a038d5841a708bae7431ee7ffb7a725623a4dd35b45b9567950e5a99bea35"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"e1YsIWny5MTVQkuvuLWOcAywmr8wNo/M34NNGp/SOT+djHQuXwFFp413vPNOeTxoCnr12HkxVFlRlf8o7TUeBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T22:11:43.684663Z","bundle_sha256":"c6a0851d99ce2e40cab914c7620c3df4760db1ee3458f3c21a3a9043d8c7ab19"}}