{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:VNZRGHDMBBNDNBWERYFYEGOS4Y","short_pith_number":"pith:VNZRGHDM","canonical_record":{"source":{"id":"1708.09384","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2017-08-30T11:44:20Z","cross_cats_sorted":["physics.optics"],"title_canon_sha256":"182cdd51a4e9a99a04d7ef4d887ba09755311b955ba4ac64f85738011d507506","abstract_canon_sha256":"7c846eb1f6e6b9769a68f3aed031c413afe8a1fe8fd216e2e7de983cb0f3df55"},"schema_version":"1.0"},"canonical_sha256":"ab73131c6c085a3686c48e0b8219d2e6220341506c27b9405c1fec8c4dba1595","source":{"kind":"arxiv","id":"1708.09384","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1708.09384","created_at":"2026-05-18T00:11:42Z"},{"alias_kind":"arxiv_version","alias_value":"1708.09384v1","created_at":"2026-05-18T00:11:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1708.09384","created_at":"2026-05-18T00:11:42Z"},{"alias_kind":"pith_short_12","alias_value":"VNZRGHDMBBND","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_16","alias_value":"VNZRGHDMBBNDNBWE","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_8","alias_value":"VNZRGHDM","created_at":"2026-05-18T12:31:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:VNZRGHDMBBNDNBWERYFYEGOS4Y","target":"record","payload":{"canonical_record":{"source":{"id":"1708.09384","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2017-08-30T11:44:20Z","cross_cats_sorted":["physics.optics"],"title_canon_sha256":"182cdd51a4e9a99a04d7ef4d887ba09755311b955ba4ac64f85738011d507506","abstract_canon_sha256":"7c846eb1f6e6b9769a68f3aed031c413afe8a1fe8fd216e2e7de983cb0f3df55"},"schema_version":"1.0"},"canonical_sha256":"ab73131c6c085a3686c48e0b8219d2e6220341506c27b9405c1fec8c4dba1595","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:11:42.976694Z","signature_b64":"JvRIkH0l5ljY7c+WGAGfXdy+FGxGkyrwOHerG82OsQz03Ju7B+DP2hTRqa8kywqOajNnQwSIQGjKs4R9bTdkBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ab73131c6c085a3686c48e0b8219d2e6220341506c27b9405c1fec8c4dba1595","last_reissued_at":"2026-05-18T00:11:42.975890Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:11:42.975890Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1708.09384","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":"2026-05-18T00:11:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zRKLQWoTTrtxDdrIckB1OhMBT8D+FfOdlb9U7/FPiJiTFbq/B56/Pu/oQ4HoAVEIXMMiZP0aZZeDrTFrR12SAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T04:16:36.088471Z"},"content_sha256":"7be9c8f4005deb9449046a8b5ae6a2560b74e069c5ad39b5b3ea2fc468c0b03d","schema_version":"1.0","event_id":"sha256:7be9c8f4005deb9449046a8b5ae6a2560b74e069c5ad39b5b3ea2fc468c0b03d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:VNZRGHDMBBNDNBWERYFYEGOS4Y","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Laser-plasma accelerator based single-cycle attosecond undulator source","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.optics"],"primary_cat":"physics.acc-ph","authors_text":"A. Nagyv\\'aradi, A. Sharma, G. Alm\\'asi, Gy. T\\'oth, J. A. F\\\"ul\\\"op, J. Hebling, M. I. Mechler, Z. Tibai","submitted_at":"2017-08-30T11:44:20Z","abstract_excerpt":"Laser-plasma accelerators (LPAs), producing high-quality electron beams, provide an opportunity to reduce the size of free-electron lasers (FELs) to only a few meters. A complete system is proposed here, which is based on FEL technology and consists of an LPA, two undulators, and other magnetic devices. The system is capable to generate carrier-envelope phase stable attosecond pulses with engineered waveform. Pulses with up to~60~nJ energy and 90 to~400~attosecond duration in the 30 to 120~nm wavelength range are predicted by numerical simulation. These pulses can be used to investigate ultraf"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.09384","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":"2026-05-18T00:11:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ylQnlEiTTqQHDeBSXkLpWGdd8LIDHnYEy3rC5tveZ4QJDa+o+3w2B21sgr7drXPRA8H7NCISIBjbi9RmCbUcCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T04:16:36.089115Z"},"content_sha256":"e501bfbf725c38af4537f7d02740ebd6bea5dded0b0d84f8e8d4b6750146dbb6","schema_version":"1.0","event_id":"sha256:e501bfbf725c38af4537f7d02740ebd6bea5dded0b0d84f8e8d4b6750146dbb6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VNZRGHDMBBNDNBWERYFYEGOS4Y/bundle.json","state_url":"https://pith.science/pith/VNZRGHDMBBNDNBWERYFYEGOS4Y/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VNZRGHDMBBNDNBWERYFYEGOS4Y/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":"2026-06-02T04:16:36Z","links":{"resolver":"https://pith.science/pith/VNZRGHDMBBNDNBWERYFYEGOS4Y","bundle":"https://pith.science/pith/VNZRGHDMBBNDNBWERYFYEGOS4Y/bundle.json","state":"https://pith.science/pith/VNZRGHDMBBNDNBWERYFYEGOS4Y/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VNZRGHDMBBNDNBWERYFYEGOS4Y/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:VNZRGHDMBBNDNBWERYFYEGOS4Y","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":"7c846eb1f6e6b9769a68f3aed031c413afe8a1fe8fd216e2e7de983cb0f3df55","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2017-08-30T11:44:20Z","title_canon_sha256":"182cdd51a4e9a99a04d7ef4d887ba09755311b955ba4ac64f85738011d507506"},"schema_version":"1.0","source":{"id":"1708.09384","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1708.09384","created_at":"2026-05-18T00:11:42Z"},{"alias_kind":"arxiv_version","alias_value":"1708.09384v1","created_at":"2026-05-18T00:11:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1708.09384","created_at":"2026-05-18T00:11:42Z"},{"alias_kind":"pith_short_12","alias_value":"VNZRGHDMBBND","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_16","alias_value":"VNZRGHDMBBNDNBWE","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_8","alias_value":"VNZRGHDM","created_at":"2026-05-18T12:31:49Z"}],"graph_snapshots":[{"event_id":"sha256:e501bfbf725c38af4537f7d02740ebd6bea5dded0b0d84f8e8d4b6750146dbb6","target":"graph","created_at":"2026-05-18T00:11:42Z","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":"Laser-plasma accelerators (LPAs), producing high-quality electron beams, provide an opportunity to reduce the size of free-electron lasers (FELs) to only a few meters. A complete system is proposed here, which is based on FEL technology and consists of an LPA, two undulators, and other magnetic devices. The system is capable to generate carrier-envelope phase stable attosecond pulses with engineered waveform. Pulses with up to~60~nJ energy and 90 to~400~attosecond duration in the 30 to 120~nm wavelength range are predicted by numerical simulation. These pulses can be used to investigate ultraf","authors_text":"A. Nagyv\\'aradi, A. Sharma, G. Alm\\'asi, Gy. T\\'oth, J. A. F\\\"ul\\\"op, J. Hebling, M. I. Mechler, Z. Tibai","cross_cats":["physics.optics"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2017-08-30T11:44:20Z","title":"Laser-plasma accelerator based single-cycle attosecond undulator source"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.09384","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":"sha256:7be9c8f4005deb9449046a8b5ae6a2560b74e069c5ad39b5b3ea2fc468c0b03d","target":"record","created_at":"2026-05-18T00:11:42Z","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":"7c846eb1f6e6b9769a68f3aed031c413afe8a1fe8fd216e2e7de983cb0f3df55","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2017-08-30T11:44:20Z","title_canon_sha256":"182cdd51a4e9a99a04d7ef4d887ba09755311b955ba4ac64f85738011d507506"},"schema_version":"1.0","source":{"id":"1708.09384","kind":"arxiv","version":1}},"canonical_sha256":"ab73131c6c085a3686c48e0b8219d2e6220341506c27b9405c1fec8c4dba1595","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ab73131c6c085a3686c48e0b8219d2e6220341506c27b9405c1fec8c4dba1595","first_computed_at":"2026-05-18T00:11:42.975890Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:11:42.975890Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"JvRIkH0l5ljY7c+WGAGfXdy+FGxGkyrwOHerG82OsQz03Ju7B+DP2hTRqa8kywqOajNnQwSIQGjKs4R9bTdkBA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:11:42.976694Z","signed_message":"canonical_sha256_bytes"},"source_id":"1708.09384","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7be9c8f4005deb9449046a8b5ae6a2560b74e069c5ad39b5b3ea2fc468c0b03d","sha256:e501bfbf725c38af4537f7d02740ebd6bea5dded0b0d84f8e8d4b6750146dbb6"],"state_sha256":"1df899a24283586f3e73dcc0b59478ea06d5f8b5b0a4394cc414a159f6c49876"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4BC2Yi8nGlqWXLJGlAj9A1kcCZ0RH+yl6Tkiqyn5XuHHDiNV1oWudVaotcrFjsADZu2AfQgckR/zhE1vDLiPCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T04:16:36.092074Z","bundle_sha256":"59eacac4f78a8ea60b9123e3651874a31a10cc5f28fd71b5c852cf8a46371dc6"}}