{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:SRTD7HR7JBF4Q6QFTYOWVKRME4","short_pith_number":"pith:SRTD7HR7","canonical_record":{"source":{"id":"2010.06085","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2020-10-13T00:00:09Z","cross_cats_sorted":[],"title_canon_sha256":"a4b89516db598c3cc7f3f933e1054a795c6b7a0bf3720c505daf4353ff856471","abstract_canon_sha256":"967003b16ff2173b5b09e707538ee0499826b66d6f690205b362a7452b19b4fc"},"schema_version":"1.0"},"canonical_sha256":"94663f9e3f484bc87a059e1d6aaa2c2720387d3d93847f0135c9b9b0c66569ed","source":{"kind":"arxiv","id":"2010.06085","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2010.06085","created_at":"2026-07-05T02:12:07Z"},{"alias_kind":"arxiv_version","alias_value":"2010.06085v1","created_at":"2026-07-05T02:12:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2010.06085","created_at":"2026-07-05T02:12:07Z"},{"alias_kind":"pith_short_12","alias_value":"SRTD7HR7JBF4","created_at":"2026-07-05T02:12:07Z"},{"alias_kind":"pith_short_16","alias_value":"SRTD7HR7JBF4Q6QF","created_at":"2026-07-05T02:12:07Z"},{"alias_kind":"pith_short_8","alias_value":"SRTD7HR7","created_at":"2026-07-05T02:12:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:SRTD7HR7JBF4Q6QFTYOWVKRME4","target":"record","payload":{"canonical_record":{"source":{"id":"2010.06085","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2020-10-13T00:00:09Z","cross_cats_sorted":[],"title_canon_sha256":"a4b89516db598c3cc7f3f933e1054a795c6b7a0bf3720c505daf4353ff856471","abstract_canon_sha256":"967003b16ff2173b5b09e707538ee0499826b66d6f690205b362a7452b19b4fc"},"schema_version":"1.0"},"canonical_sha256":"94663f9e3f484bc87a059e1d6aaa2c2720387d3d93847f0135c9b9b0c66569ed","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:12:07.995831Z","signature_b64":"ZZlC8wSvPmrDktt7qSvrVHo00Q8OoQG47n+nR1udimIGnbIhBykVCfbiobyTWHkC2FqlypOmOKs+yOUrxU4ODA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"94663f9e3f484bc87a059e1d6aaa2c2720387d3d93847f0135c9b9b0c66569ed","last_reissued_at":"2026-07-05T02:12:07.995382Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:12:07.995382Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2010.06085","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":"2026-07-05T02:12:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Gvyvz8/Htm6rIHQyBo67rudGCXrWURX098lC0wx8soHoU/SRpdWpOkejuzVaP6AuT61poQl0f2+D3Tm/4Fx1DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T18:44:27.015080Z"},"content_sha256":"f3add6c40006675d342c2b1a31e42eea71a367b84e7f483b563778844f8ad647","schema_version":"1.0","event_id":"sha256:f3add6c40006675d342c2b1a31e42eea71a367b84e7f483b563778844f8ad647"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:SRTD7HR7JBF4Q6QFTYOWVKRME4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"High-power few-cycle near-infrared OPCPA for soft X-ray generation at 100 kHz","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Christopher R. Phillips, Fabian Brunner, Justinas Pupeikis, Lukas Gallmann, Pierre-Alexis Chevreuil, Stefan Hrisafov, Ursula Keller","submitted_at":"2020-10-13T00:00:09Z","abstract_excerpt":"We present a near-infrared optical parametric chirped-pulse amplifier (OPCPA) and soft X-ray (SXR) high-harmonic generation system. The OPCPA produces few-cycle pulses at a center wavelength of 800 nm and operates at a high repetition rate of 100 kHz. It is seeded by fully programmable amplitude and phase controlled ultra-broadband pulses from a Ti:sapphire oscillator. The output from the OPCPA system was compressed to near-transform-limited 9.3-fs pulses. High-power operation up to an average power of 35 W was achieved, and a fully characterized pulse compression was recorded for a power leve"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2010.06085","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2010.06085/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T02:12:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OXNsWCdj35PSc84IKPbD+Cgug+QI+93OO0WEZICIsw+IyYeKLQEDQRZNg1BAw30KhfX+AlejPuJ6NOHWvVsPCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T18:44:27.015623Z"},"content_sha256":"b4a5f6ad500a97754081e47ecbbf88b366938e5921b47f6d1bda61c3e6ea516a","schema_version":"1.0","event_id":"sha256:b4a5f6ad500a97754081e47ecbbf88b366938e5921b47f6d1bda61c3e6ea516a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SRTD7HR7JBF4Q6QFTYOWVKRME4/bundle.json","state_url":"https://pith.science/pith/SRTD7HR7JBF4Q6QFTYOWVKRME4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SRTD7HR7JBF4Q6QFTYOWVKRME4/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":"2026-08-15T18:44:27Z","links":{"resolver":"https://pith.science/pith/SRTD7HR7JBF4Q6QFTYOWVKRME4","bundle":"https://pith.science/pith/SRTD7HR7JBF4Q6QFTYOWVKRME4/bundle.json","state":"https://pith.science/pith/SRTD7HR7JBF4Q6QFTYOWVKRME4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SRTD7HR7JBF4Q6QFTYOWVKRME4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:SRTD7HR7JBF4Q6QFTYOWVKRME4","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":"967003b16ff2173b5b09e707538ee0499826b66d6f690205b362a7452b19b4fc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2020-10-13T00:00:09Z","title_canon_sha256":"a4b89516db598c3cc7f3f933e1054a795c6b7a0bf3720c505daf4353ff856471"},"schema_version":"1.0","source":{"id":"2010.06085","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2010.06085","created_at":"2026-07-05T02:12:07Z"},{"alias_kind":"arxiv_version","alias_value":"2010.06085v1","created_at":"2026-07-05T02:12:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2010.06085","created_at":"2026-07-05T02:12:07Z"},{"alias_kind":"pith_short_12","alias_value":"SRTD7HR7JBF4","created_at":"2026-07-05T02:12:07Z"},{"alias_kind":"pith_short_16","alias_value":"SRTD7HR7JBF4Q6QF","created_at":"2026-07-05T02:12:07Z"},{"alias_kind":"pith_short_8","alias_value":"SRTD7HR7","created_at":"2026-07-05T02:12:07Z"}],"graph_snapshots":[{"event_id":"sha256:b4a5f6ad500a97754081e47ecbbf88b366938e5921b47f6d1bda61c3e6ea516a","target":"graph","created_at":"2026-07-05T02:12:07Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2010.06085/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present a near-infrared optical parametric chirped-pulse amplifier (OPCPA) and soft X-ray (SXR) high-harmonic generation system. The OPCPA produces few-cycle pulses at a center wavelength of 800 nm and operates at a high repetition rate of 100 kHz. It is seeded by fully programmable amplitude and phase controlled ultra-broadband pulses from a Ti:sapphire oscillator. The output from the OPCPA system was compressed to near-transform-limited 9.3-fs pulses. High-power operation up to an average power of 35 W was achieved, and a fully characterized pulse compression was recorded for a power leve","authors_text":"Christopher R. Phillips, Fabian Brunner, Justinas Pupeikis, Lukas Gallmann, Pierre-Alexis Chevreuil, Stefan Hrisafov, Ursula Keller","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2020-10-13T00:00:09Z","title":"High-power few-cycle near-infrared OPCPA for soft X-ray generation at 100 kHz"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2010.06085","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:f3add6c40006675d342c2b1a31e42eea71a367b84e7f483b563778844f8ad647","target":"record","created_at":"2026-07-05T02:12:07Z","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":"967003b16ff2173b5b09e707538ee0499826b66d6f690205b362a7452b19b4fc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2020-10-13T00:00:09Z","title_canon_sha256":"a4b89516db598c3cc7f3f933e1054a795c6b7a0bf3720c505daf4353ff856471"},"schema_version":"1.0","source":{"id":"2010.06085","kind":"arxiv","version":1}},"canonical_sha256":"94663f9e3f484bc87a059e1d6aaa2c2720387d3d93847f0135c9b9b0c66569ed","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"94663f9e3f484bc87a059e1d6aaa2c2720387d3d93847f0135c9b9b0c66569ed","first_computed_at":"2026-07-05T02:12:07.995382Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:12:07.995382Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ZZlC8wSvPmrDktt7qSvrVHo00Q8OoQG47n+nR1udimIGnbIhBykVCfbiobyTWHkC2FqlypOmOKs+yOUrxU4ODA==","signature_status":"signed_v1","signed_at":"2026-07-05T02:12:07.995831Z","signed_message":"canonical_sha256_bytes"},"source_id":"2010.06085","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f3add6c40006675d342c2b1a31e42eea71a367b84e7f483b563778844f8ad647","sha256:b4a5f6ad500a97754081e47ecbbf88b366938e5921b47f6d1bda61c3e6ea516a"],"state_sha256":"c4c59f9c2f9d4e139f9de90584d8cfffb73e1c1cb66f338ac065dbb0600f36e9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"R/0L7OD6Kqd+D3ckXqljpvcSmS4G2oW3XXERPMVGbPxo6pF31hIVvTOuNAtbASrR2zKTHZjzpiievkFp1O1MBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-15T18:44:27.018807Z","bundle_sha256":"bda51b1861c806b05ffac1c58a81d97a5ef158c10ec9f45d86c398834b84d2b9"}}