{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:RTZXE4BKCIKLPAP3GCLYLFIOPS","short_pith_number":"pith:RTZXE4BK","canonical_record":{"source":{"id":"1408.6827","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2014-08-28T19:50:22Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"e6bc25ac1fcd857d03a36f37ce8f79d6a007dfaf68dc521a2a937b63b8b85fe5","abstract_canon_sha256":"8a9b223bb7f326c666cbd07d1ccdf4aad41b696a5f4f7a253663f8713de329a6"},"schema_version":"1.0"},"canonical_sha256":"8cf372702a1214b781fb309785950e7c8450b62b77d6ba9ec595a0655bf55cdf","source":{"kind":"arxiv","id":"1408.6827","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1408.6827","created_at":"2026-05-18T00:27:10Z"},{"alias_kind":"arxiv_version","alias_value":"1408.6827v2","created_at":"2026-05-18T00:27:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1408.6827","created_at":"2026-05-18T00:27:10Z"},{"alias_kind":"pith_short_12","alias_value":"RTZXE4BKCIKL","created_at":"2026-05-18T12:28:46Z"},{"alias_kind":"pith_short_16","alias_value":"RTZXE4BKCIKLPAP3","created_at":"2026-05-18T12:28:46Z"},{"alias_kind":"pith_short_8","alias_value":"RTZXE4BK","created_at":"2026-05-18T12:28:46Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:RTZXE4BKCIKLPAP3GCLYLFIOPS","target":"record","payload":{"canonical_record":{"source":{"id":"1408.6827","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2014-08-28T19:50:22Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"e6bc25ac1fcd857d03a36f37ce8f79d6a007dfaf68dc521a2a937b63b8b85fe5","abstract_canon_sha256":"8a9b223bb7f326c666cbd07d1ccdf4aad41b696a5f4f7a253663f8713de329a6"},"schema_version":"1.0"},"canonical_sha256":"8cf372702a1214b781fb309785950e7c8450b62b77d6ba9ec595a0655bf55cdf","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:27:10.291427Z","signature_b64":"lXYMnKNqjIkSOO5JZ23ei+jeuwbLmlAX7Reobj1F1PWkrbBoFXXt46Dz4InmhDeaLu8gvxQqh5p4vLj1a6yWCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8cf372702a1214b781fb309785950e7c8450b62b77d6ba9ec595a0655bf55cdf","last_reissued_at":"2026-05-18T00:27:10.290885Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:27:10.290885Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1408.6827","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":"2026-05-18T00:27:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9c3AsBYOOhUmGAHyGOgetmsgfzPqB0Zh/+J9B22Z/AirwPGyOzAeqj5HDP4HBkOZPWXCPsQGw/Ye0agN4SNIDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-23T21:51:55.276796Z"},"content_sha256":"009fa5c7c27e8e12c5739a1dca20644090e9ff8d37dda6f2a10f196e1eb7f5f3","schema_version":"1.0","event_id":"sha256:009fa5c7c27e8e12c5739a1dca20644090e9ff8d37dda6f2a10f196e1eb7f5f3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:RTZXE4BKCIKLPAP3GCLYLFIOPS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Bright high-repetition-rate source of narrowband extreme-ultraviolet harmonics beyond 22 eV","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"physics.optics","authors_text":"He Wang, Joseph S. Robinson, Predrag Ranitovic, Robert A. Kaindl, Stefan Ulonska, Yiming Xu","submitted_at":"2014-08-28T19:50:22Z","abstract_excerpt":"Novel table-top sources of extreme-ultraviolet light based on high-harmonic generation yield unique insight into the fundamental properties of molecules, nanomaterials, or correlated solids, and enable advanced applications in imaging or metrology. Extending high-harmonic generation to high repetition rates portends great experimental benefits, yet efficient extreme-ultraviolet conversion of correspondingly weak driving pulses is challenging. Here, we demonstrate a highly efficient source of femtosecond extreme-ultraviolet pulses at 50-kHz repetition rate, utilizing the ultraviolet second-harm"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1408.6827","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":"2026-05-18T00:27:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xdoGQFuwnGNxTDeWowlAH5jRA5BSWF29N1jDjUFdwJHuYufmzHyLxz2uK+h/WI92y4Kyd2s3VgZOOHTjBMd5Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-23T21:51:55.277144Z"},"content_sha256":"8ba99a2d6e6d6d691353a207dc33068b9643a149ea62566425a25b5371e62ba8","schema_version":"1.0","event_id":"sha256:8ba99a2d6e6d6d691353a207dc33068b9643a149ea62566425a25b5371e62ba8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RTZXE4BKCIKLPAP3GCLYLFIOPS/bundle.json","state_url":"https://pith.science/pith/RTZXE4BKCIKLPAP3GCLYLFIOPS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RTZXE4BKCIKLPAP3GCLYLFIOPS/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":"2026-06-23T21:51:55Z","links":{"resolver":"https://pith.science/pith/RTZXE4BKCIKLPAP3GCLYLFIOPS","bundle":"https://pith.science/pith/RTZXE4BKCIKLPAP3GCLYLFIOPS/bundle.json","state":"https://pith.science/pith/RTZXE4BKCIKLPAP3GCLYLFIOPS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RTZXE4BKCIKLPAP3GCLYLFIOPS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:RTZXE4BKCIKLPAP3GCLYLFIOPS","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":"8a9b223bb7f326c666cbd07d1ccdf4aad41b696a5f4f7a253663f8713de329a6","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2014-08-28T19:50:22Z","title_canon_sha256":"e6bc25ac1fcd857d03a36f37ce8f79d6a007dfaf68dc521a2a937b63b8b85fe5"},"schema_version":"1.0","source":{"id":"1408.6827","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1408.6827","created_at":"2026-05-18T00:27:10Z"},{"alias_kind":"arxiv_version","alias_value":"1408.6827v2","created_at":"2026-05-18T00:27:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1408.6827","created_at":"2026-05-18T00:27:10Z"},{"alias_kind":"pith_short_12","alias_value":"RTZXE4BKCIKL","created_at":"2026-05-18T12:28:46Z"},{"alias_kind":"pith_short_16","alias_value":"RTZXE4BKCIKLPAP3","created_at":"2026-05-18T12:28:46Z"},{"alias_kind":"pith_short_8","alias_value":"RTZXE4BK","created_at":"2026-05-18T12:28:46Z"}],"graph_snapshots":[{"event_id":"sha256:8ba99a2d6e6d6d691353a207dc33068b9643a149ea62566425a25b5371e62ba8","target":"graph","created_at":"2026-05-18T00:27:10Z","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":"Novel table-top sources of extreme-ultraviolet light based on high-harmonic generation yield unique insight into the fundamental properties of molecules, nanomaterials, or correlated solids, and enable advanced applications in imaging or metrology. Extending high-harmonic generation to high repetition rates portends great experimental benefits, yet efficient extreme-ultraviolet conversion of correspondingly weak driving pulses is challenging. Here, we demonstrate a highly efficient source of femtosecond extreme-ultraviolet pulses at 50-kHz repetition rate, utilizing the ultraviolet second-harm","authors_text":"He Wang, Joseph S. Robinson, Predrag Ranitovic, Robert A. Kaindl, Stefan Ulonska, Yiming Xu","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2014-08-28T19:50:22Z","title":"Bright high-repetition-rate source of narrowband extreme-ultraviolet harmonics beyond 22 eV"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1408.6827","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":"sha256:009fa5c7c27e8e12c5739a1dca20644090e9ff8d37dda6f2a10f196e1eb7f5f3","target":"record","created_at":"2026-05-18T00:27:10Z","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":"8a9b223bb7f326c666cbd07d1ccdf4aad41b696a5f4f7a253663f8713de329a6","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2014-08-28T19:50:22Z","title_canon_sha256":"e6bc25ac1fcd857d03a36f37ce8f79d6a007dfaf68dc521a2a937b63b8b85fe5"},"schema_version":"1.0","source":{"id":"1408.6827","kind":"arxiv","version":2}},"canonical_sha256":"8cf372702a1214b781fb309785950e7c8450b62b77d6ba9ec595a0655bf55cdf","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8cf372702a1214b781fb309785950e7c8450b62b77d6ba9ec595a0655bf55cdf","first_computed_at":"2026-05-18T00:27:10.290885Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:27:10.290885Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"lXYMnKNqjIkSOO5JZ23ei+jeuwbLmlAX7Reobj1F1PWkrbBoFXXt46Dz4InmhDeaLu8gvxQqh5p4vLj1a6yWCw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:27:10.291427Z","signed_message":"canonical_sha256_bytes"},"source_id":"1408.6827","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:009fa5c7c27e8e12c5739a1dca20644090e9ff8d37dda6f2a10f196e1eb7f5f3","sha256:8ba99a2d6e6d6d691353a207dc33068b9643a149ea62566425a25b5371e62ba8"],"state_sha256":"d454f81ed6e5757129f80f7cf75df84b96d89b5f5249b4a82ced7914d08123af"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KPKETXlAZooOw/2bkIYj/F+LYafhZSfBWGy38kGJU5sWnZl5ady11zeQnlnYwKoysmC0i3cBktUY8Zx15XlKBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-23T21:51:55.279459Z","bundle_sha256":"2828172ac165e66a998fcda062bd16a8587da7109bf2be7cb4d4f29fe9e16a54"}}