{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:NYKU74FV2SEZDQXQAN33TYAKOK","short_pith_number":"pith:NYKU74FV","canonical_record":{"source":{"id":"2606.31335","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"physics.acc-ph","submitted_at":"2026-06-30T08:35:53Z","cross_cats_sorted":[],"title_canon_sha256":"e22a7626188f4bf27d927eb38ab647ac8caf051d2ae23ece0699013e46a46d92","abstract_canon_sha256":"fd5644e83ec97662dc784035d5a267ae48d3102ad1d1868f6becb2b3654e252c"},"schema_version":"1.0"},"canonical_sha256":"6e154ff0b5d48991c2f00377b9e00a729321f84021dd78184fae3852e9d07df3","source":{"kind":"arxiv","id":"2606.31335","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.31335","created_at":"2026-07-01T01:17:59Z"},{"alias_kind":"arxiv_version","alias_value":"2606.31335v1","created_at":"2026-07-01T01:17:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.31335","created_at":"2026-07-01T01:17:59Z"},{"alias_kind":"pith_short_12","alias_value":"NYKU74FV2SEZ","created_at":"2026-07-01T01:17:59Z"},{"alias_kind":"pith_short_16","alias_value":"NYKU74FV2SEZDQXQ","created_at":"2026-07-01T01:17:59Z"},{"alias_kind":"pith_short_8","alias_value":"NYKU74FV","created_at":"2026-07-01T01:17:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:NYKU74FV2SEZDQXQAN33TYAKOK","target":"record","payload":{"canonical_record":{"source":{"id":"2606.31335","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"physics.acc-ph","submitted_at":"2026-06-30T08:35:53Z","cross_cats_sorted":[],"title_canon_sha256":"e22a7626188f4bf27d927eb38ab647ac8caf051d2ae23ece0699013e46a46d92","abstract_canon_sha256":"fd5644e83ec97662dc784035d5a267ae48d3102ad1d1868f6becb2b3654e252c"},"schema_version":"1.0"},"canonical_sha256":"6e154ff0b5d48991c2f00377b9e00a729321f84021dd78184fae3852e9d07df3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-01T01:17:59.592743Z","signature_b64":"eDtdRH99U3db8BqeLm7Z0F3Fv3qkwiSr+7d/SJsLf25B9XVfApIBj8acV5sYHXWOjLyE14vUOuiMnJUdJyA9BA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6e154ff0b5d48991c2f00377b9e00a729321f84021dd78184fae3852e9d07df3","last_reissued_at":"2026-07-01T01:17:59.592306Z","signature_status":"signed_v1","first_computed_at":"2026-07-01T01:17:59.592306Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2606.31335","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":"2026-07-01T01:17:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"obWT/VxiiR/2CyFKaO3aw5IiiMuM6mQIe0Dx2lDEwmYBtsiPTmQmiJd4786EuZRmHIjYWceKEoWr7Rr6R3auAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-01T23:51:57.020652Z"},"content_sha256":"e13ed8c4030cdd6b3d2729e8f49e212ec6501697e75dc00eb6400eb8002b58db","schema_version":"1.0","event_id":"sha256:e13ed8c4030cdd6b3d2729e8f49e212ec6501697e75dc00eb6400eb8002b58db"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:NYKU74FV2SEZDQXQAN33TYAKOK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"High-Power Polarization-Controlled Attosecond-Scale Soft X-ray Pulses","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":[],"primary_cat":"physics.acc-ph","authors_text":"Alexandre Trisorio, Andre Al Haddad, Andreas Dax, Antoine Sarracini, Carlo Vicario, Christoph Bostedt, Christopher Arrell, Christoph Kittel, Didier Voulot, Eduard Prat, Gregor Knopp, Hankai Zhang, Kirsten Schnorr, Martin Huppert, Nicole Hiller, Philipp Dijkstal, Sven Reiche, Thomas Schietinger, Tobias Weilbach, Umit Demirbas, Zhaoheng Guo","submitted_at":"2026-06-30T08:35:53Z","abstract_excerpt":"We demonstrate a versatile platform for high-power attosecond soft X-ray pulse generation with polarization and photon energy control at the SwissFEL free-electron laser. An isolated high-current spike embedded within a long electron-beam pedestal emits soft X-ray pulses with single-spike spectra and multi-electronvolt bandwidths in the tunable magnetic fields of Apple-X undulators. Demonstrated pulse parameters include a photon energy range of 450--1070 eV, circular as well as linear polarization, and pulse energies from tens to above hundred microjoules. By tuning the longitudinal slice-depe"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.31335","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/2606.31335/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":"2026-07-01T01:17:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lSK3d5z+ESlH46z9XD9tn04GSitOOLna6WR/x1MnfFH1u2d5GP+EYodkDNe0oUtLtjeAQKmrYvJaE7V6ny8uCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-01T23:51:57.021042Z"},"content_sha256":"4c00d263b941483aa69d0797b912977968e601e912fcebff39e0fdbb4ac4010d","schema_version":"1.0","event_id":"sha256:4c00d263b941483aa69d0797b912977968e601e912fcebff39e0fdbb4ac4010d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NYKU74FV2SEZDQXQAN33TYAKOK/bundle.json","state_url":"https://pith.science/pith/NYKU74FV2SEZDQXQAN33TYAKOK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NYKU74FV2SEZDQXQAN33TYAKOK/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":"2026-07-01T23:51:57Z","links":{"resolver":"https://pith.science/pith/NYKU74FV2SEZDQXQAN33TYAKOK","bundle":"https://pith.science/pith/NYKU74FV2SEZDQXQAN33TYAKOK/bundle.json","state":"https://pith.science/pith/NYKU74FV2SEZDQXQAN33TYAKOK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NYKU74FV2SEZDQXQAN33TYAKOK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:NYKU74FV2SEZDQXQAN33TYAKOK","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":"fd5644e83ec97662dc784035d5a267ae48d3102ad1d1868f6becb2b3654e252c","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"physics.acc-ph","submitted_at":"2026-06-30T08:35:53Z","title_canon_sha256":"e22a7626188f4bf27d927eb38ab647ac8caf051d2ae23ece0699013e46a46d92"},"schema_version":"1.0","source":{"id":"2606.31335","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.31335","created_at":"2026-07-01T01:17:59Z"},{"alias_kind":"arxiv_version","alias_value":"2606.31335v1","created_at":"2026-07-01T01:17:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.31335","created_at":"2026-07-01T01:17:59Z"},{"alias_kind":"pith_short_12","alias_value":"NYKU74FV2SEZ","created_at":"2026-07-01T01:17:59Z"},{"alias_kind":"pith_short_16","alias_value":"NYKU74FV2SEZDQXQ","created_at":"2026-07-01T01:17:59Z"},{"alias_kind":"pith_short_8","alias_value":"NYKU74FV","created_at":"2026-07-01T01:17:59Z"}],"graph_snapshots":[{"event_id":"sha256:4c00d263b941483aa69d0797b912977968e601e912fcebff39e0fdbb4ac4010d","target":"graph","created_at":"2026-07-01T01:17:59Z","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/2606.31335/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We demonstrate a versatile platform for high-power attosecond soft X-ray pulse generation with polarization and photon energy control at the SwissFEL free-electron laser. An isolated high-current spike embedded within a long electron-beam pedestal emits soft X-ray pulses with single-spike spectra and multi-electronvolt bandwidths in the tunable magnetic fields of Apple-X undulators. Demonstrated pulse parameters include a photon energy range of 450--1070 eV, circular as well as linear polarization, and pulse energies from tens to above hundred microjoules. By tuning the longitudinal slice-depe","authors_text":"Alexandre Trisorio, Andre Al Haddad, Andreas Dax, Antoine Sarracini, Carlo Vicario, Christoph Bostedt, Christopher Arrell, Christoph Kittel, Didier Voulot, Eduard Prat, Gregor Knopp, Hankai Zhang, Kirsten Schnorr, Martin Huppert, Nicole Hiller, Philipp Dijkstal, Sven Reiche, Thomas Schietinger, Tobias Weilbach, Umit Demirbas, Zhaoheng Guo","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"physics.acc-ph","submitted_at":"2026-06-30T08:35:53Z","title":"High-Power Polarization-Controlled Attosecond-Scale Soft X-ray Pulses"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.31335","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:e13ed8c4030cdd6b3d2729e8f49e212ec6501697e75dc00eb6400eb8002b58db","target":"record","created_at":"2026-07-01T01:17:59Z","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":"fd5644e83ec97662dc784035d5a267ae48d3102ad1d1868f6becb2b3654e252c","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"physics.acc-ph","submitted_at":"2026-06-30T08:35:53Z","title_canon_sha256":"e22a7626188f4bf27d927eb38ab647ac8caf051d2ae23ece0699013e46a46d92"},"schema_version":"1.0","source":{"id":"2606.31335","kind":"arxiv","version":1}},"canonical_sha256":"6e154ff0b5d48991c2f00377b9e00a729321f84021dd78184fae3852e9d07df3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6e154ff0b5d48991c2f00377b9e00a729321f84021dd78184fae3852e9d07df3","first_computed_at":"2026-07-01T01:17:59.592306Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-01T01:17:59.592306Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"eDtdRH99U3db8BqeLm7Z0F3Fv3qkwiSr+7d/SJsLf25B9XVfApIBj8acV5sYHXWOjLyE14vUOuiMnJUdJyA9BA==","signature_status":"signed_v1","signed_at":"2026-07-01T01:17:59.592743Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.31335","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e13ed8c4030cdd6b3d2729e8f49e212ec6501697e75dc00eb6400eb8002b58db","sha256:4c00d263b941483aa69d0797b912977968e601e912fcebff39e0fdbb4ac4010d"],"state_sha256":"e84fe493d2a0550ef6a47d0605b1222e7b951b5bafbccac2f5d8c633d76621e9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"36YqEeMw5Eglc7vGcqf1cpjHC2nO+huNf+p+/7fTaE5Aq1WO2UHbzbLj//p7lrrnhxpIPHaRrqIg1ui2O+K+Dg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-01T23:51:57.023734Z","bundle_sha256":"2b1d5c8328cf4955d987ce9205bd86aea9a603451b6905c5607184ae0ab1fa13"}}