{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2006:6FIAAX3QDEM7S26A4BPTH52KHG","short_pith_number":"pith:6FIAAX3Q","canonical_record":{"source":{"id":"cond-mat/0612201","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2006-12-07T23:43:08Z","cross_cats_sorted":[],"title_canon_sha256":"3f8dcd16208496c1270ac46728ce02214a3a8d80eb059035659f8b5a856a9a22","abstract_canon_sha256":"0a722bb0d30059c2a93b7d261a3ec3ffe27a4c135e00aeb3bee13d0f958132d6"},"schema_version":"1.0"},"canonical_sha256":"f150005f701919f96bc0e05f33f74a399b770722dc61f39fea6a1d430d67df5d","source":{"kind":"arxiv","id":"cond-mat/0612201","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0612201","created_at":"2026-05-18T04:08:54Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0612201v2","created_at":"2026-05-18T04:08:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0612201","created_at":"2026-05-18T04:08:54Z"},{"alias_kind":"pith_short_12","alias_value":"6FIAAX3QDEM7","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_16","alias_value":"6FIAAX3QDEM7S26A","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_8","alias_value":"6FIAAX3Q","created_at":"2026-05-18T12:25:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2006:6FIAAX3QDEM7S26A4BPTH52KHG","target":"record","payload":{"canonical_record":{"source":{"id":"cond-mat/0612201","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2006-12-07T23:43:08Z","cross_cats_sorted":[],"title_canon_sha256":"3f8dcd16208496c1270ac46728ce02214a3a8d80eb059035659f8b5a856a9a22","abstract_canon_sha256":"0a722bb0d30059c2a93b7d261a3ec3ffe27a4c135e00aeb3bee13d0f958132d6"},"schema_version":"1.0"},"canonical_sha256":"f150005f701919f96bc0e05f33f74a399b770722dc61f39fea6a1d430d67df5d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:08:54.883807Z","signature_b64":"iBfXsgo1+pWTWyqGFQ5mODtBU+7GicPk6xQHwoihLPY3zTzmLS98Iv/jTBaFkvEMmjF1T5P6zfZCbvfL2hF7DQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f150005f701919f96bc0e05f33f74a399b770722dc61f39fea6a1d430d67df5d","last_reissued_at":"2026-05-18T04:08:54.883247Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:08:54.883247Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"cond-mat/0612201","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T04:08:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"z41uIO1Qf44lsMHKqahQE5emV4+JbfinsKcbbNSQmJo8Q9fN3vp0X7nBAMQSLyjASbxgam/LipKBXSy8vK1ZAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T18:54:41.783027Z"},"content_sha256":"3247d514bc9f1f154da9c80e63da3b86d5ab0a1112d266b6ae3712fe91938989","schema_version":"1.0","event_id":"sha256:3247d514bc9f1f154da9c80e63da3b86d5ab0a1112d266b6ae3712fe91938989"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2006:6FIAAX3QDEM7S26A4BPTH52KHG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Reversible Photomechanical Switching of Individual Engineered Molecules at a Surface","license":"","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"2), 2) ((1) University of California at Berkeley, (2) Lawrence Berkeley National Laboratory), Armen Kirakosian (1, David A. Strubbe (1, Dirk Trauner (1, Frank Lauterwasser (1, Jean M.J. Frechet (1, Jessica H. Harvey (1, Jongweon Cho (1, Matthew J. Comstock (1, Michael F. Crommie (1, Niv Levy (1, Steven G. Louie (1","submitted_at":"2006-12-07T23:43:08Z","abstract_excerpt":"We have observed reversible light-induced mechanical switching for a single organic molecule bound to a metal surface. Scanning tunneling microscopy (STM) was used to image the features of an individual azobenzene molecule on Au(111) before and after reversibly cycling its mechanical structure between trans and cis states using light. Azobenzene molecules were engineered to increase their surface photomechanical activity by attaching varying numbers of tert-butyl (TB) ligands (\"legs\") to the azobenzene phenyl rings. STM images show that increasing the number of TB legs \"lifts\" the azobenzene m"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0612201","kind":"arxiv","version":2},"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":"2026-05-18T04:08:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Y58CgWjd31VMFsRMD8o/23M/HvgFUxPIZV26yPY7D0dWOjSf5dCH0UmQi83gPTOj63Ucrrdw0q9zyoZAFHlxCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T18:54:41.783384Z"},"content_sha256":"ee9738c56beb3690a6536ae45c59a50beb2e5ba689acef2afd71d6019db14c8a","schema_version":"1.0","event_id":"sha256:ee9738c56beb3690a6536ae45c59a50beb2e5ba689acef2afd71d6019db14c8a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6FIAAX3QDEM7S26A4BPTH52KHG/bundle.json","state_url":"https://pith.science/pith/6FIAAX3QDEM7S26A4BPTH52KHG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6FIAAX3QDEM7S26A4BPTH52KHG/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":"2026-06-27T18:54:41Z","links":{"resolver":"https://pith.science/pith/6FIAAX3QDEM7S26A4BPTH52KHG","bundle":"https://pith.science/pith/6FIAAX3QDEM7S26A4BPTH52KHG/bundle.json","state":"https://pith.science/pith/6FIAAX3QDEM7S26A4BPTH52KHG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6FIAAX3QDEM7S26A4BPTH52KHG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2006:6FIAAX3QDEM7S26A4BPTH52KHG","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":"0a722bb0d30059c2a93b7d261a3ec3ffe27a4c135e00aeb3bee13d0f958132d6","cross_cats_sorted":[],"license":"","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2006-12-07T23:43:08Z","title_canon_sha256":"3f8dcd16208496c1270ac46728ce02214a3a8d80eb059035659f8b5a856a9a22"},"schema_version":"1.0","source":{"id":"cond-mat/0612201","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0612201","created_at":"2026-05-18T04:08:54Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0612201v2","created_at":"2026-05-18T04:08:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0612201","created_at":"2026-05-18T04:08:54Z"},{"alias_kind":"pith_short_12","alias_value":"6FIAAX3QDEM7","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_16","alias_value":"6FIAAX3QDEM7S26A","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_8","alias_value":"6FIAAX3Q","created_at":"2026-05-18T12:25:53Z"}],"graph_snapshots":[{"event_id":"sha256:ee9738c56beb3690a6536ae45c59a50beb2e5ba689acef2afd71d6019db14c8a","target":"graph","created_at":"2026-05-18T04:08:54Z","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 have observed reversible light-induced mechanical switching for a single organic molecule bound to a metal surface. Scanning tunneling microscopy (STM) was used to image the features of an individual azobenzene molecule on Au(111) before and after reversibly cycling its mechanical structure between trans and cis states using light. Azobenzene molecules were engineered to increase their surface photomechanical activity by attaching varying numbers of tert-butyl (TB) ligands (\"legs\") to the azobenzene phenyl rings. STM images show that increasing the number of TB legs \"lifts\" the azobenzene m","authors_text":"2), 2) ((1) University of California at Berkeley, (2) Lawrence Berkeley National Laboratory), Armen Kirakosian (1, David A. Strubbe (1, Dirk Trauner (1, Frank Lauterwasser (1, Jean M.J. Frechet (1, Jessica H. Harvey (1, Jongweon Cho (1, Matthew J. Comstock (1, Michael F. Crommie (1, Niv Levy (1, Steven G. Louie (1","cross_cats":[],"headline":"","license":"","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2006-12-07T23:43:08Z","title":"Reversible Photomechanical Switching of Individual Engineered Molecules at a Surface"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0612201","kind":"arxiv","version":2},"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":"sha256:3247d514bc9f1f154da9c80e63da3b86d5ab0a1112d266b6ae3712fe91938989","target":"record","created_at":"2026-05-18T04:08:54Z","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":"0a722bb0d30059c2a93b7d261a3ec3ffe27a4c135e00aeb3bee13d0f958132d6","cross_cats_sorted":[],"license":"","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2006-12-07T23:43:08Z","title_canon_sha256":"3f8dcd16208496c1270ac46728ce02214a3a8d80eb059035659f8b5a856a9a22"},"schema_version":"1.0","source":{"id":"cond-mat/0612201","kind":"arxiv","version":2}},"canonical_sha256":"f150005f701919f96bc0e05f33f74a399b770722dc61f39fea6a1d430d67df5d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f150005f701919f96bc0e05f33f74a399b770722dc61f39fea6a1d430d67df5d","first_computed_at":"2026-05-18T04:08:54.883247Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:08:54.883247Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"iBfXsgo1+pWTWyqGFQ5mODtBU+7GicPk6xQHwoihLPY3zTzmLS98Iv/jTBaFkvEMmjF1T5P6zfZCbvfL2hF7DQ==","signature_status":"signed_v1","signed_at":"2026-05-18T04:08:54.883807Z","signed_message":"canonical_sha256_bytes"},"source_id":"cond-mat/0612201","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3247d514bc9f1f154da9c80e63da3b86d5ab0a1112d266b6ae3712fe91938989","sha256:ee9738c56beb3690a6536ae45c59a50beb2e5ba689acef2afd71d6019db14c8a"],"state_sha256":"b262b1f89223ba0781c0d6fae6b27f19538d5949f35240cab1165b7de0e1cef7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yR0wKYPV29ASdT+3nIuDzKrKiu4ra8Lluh6Vedt5rq5WHIa/JLy5/t4Etio1lye7NLZEMRIGPYjm+m4HH9OcCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-27T18:54:41.785219Z","bundle_sha256":"a83d0280f6f951b749f921c60782cff9e6930373d480288f8566e251b0e62191"}}