{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:H5FHA2U3PXYE2P4XE7UQZU7JRC","short_pith_number":"pith:H5FHA2U3","canonical_record":{"source":{"id":"1804.05931","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2018-04-16T20:44:47Z","cross_cats_sorted":["physics.optics","physics.plasm-ph"],"title_canon_sha256":"8a765f732b0eae93caab20023205bb8087bc28217e0e2260aed1095b299cb294","abstract_canon_sha256":"961d54dda81f387214a7b7bc1d7bfdf5aa788347de8ccd8706c763b98b5e7d9d"},"schema_version":"1.0"},"canonical_sha256":"3f4a706a9b7df04d3f9727e90cd3e988b676c6397ab6fe5e416aae65111f3ac5","source":{"kind":"arxiv","id":"1804.05931","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.05931","created_at":"2026-07-05T00:45:42Z"},{"alias_kind":"arxiv_version","alias_value":"1804.05931v2","created_at":"2026-07-05T00:45:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.05931","created_at":"2026-07-05T00:45:42Z"},{"alias_kind":"pith_short_12","alias_value":"H5FHA2U3PXYE","created_at":"2026-07-05T00:45:42Z"},{"alias_kind":"pith_short_16","alias_value":"H5FHA2U3PXYE2P4X","created_at":"2026-07-05T00:45:42Z"},{"alias_kind":"pith_short_8","alias_value":"H5FHA2U3","created_at":"2026-07-05T00:45:42Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:H5FHA2U3PXYE2P4XE7UQZU7JRC","target":"record","payload":{"canonical_record":{"source":{"id":"1804.05931","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2018-04-16T20:44:47Z","cross_cats_sorted":["physics.optics","physics.plasm-ph"],"title_canon_sha256":"8a765f732b0eae93caab20023205bb8087bc28217e0e2260aed1095b299cb294","abstract_canon_sha256":"961d54dda81f387214a7b7bc1d7bfdf5aa788347de8ccd8706c763b98b5e7d9d"},"schema_version":"1.0"},"canonical_sha256":"3f4a706a9b7df04d3f9727e90cd3e988b676c6397ab6fe5e416aae65111f3ac5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:45:42.724033Z","signature_b64":"/Ai9Qus7Dr15F4j3cY53/YU04Bf5oj3F+9O3JQN0DkuRHqwluNX6az48m15ay7NcfMNQAqb958BqeL+pYxLJAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3f4a706a9b7df04d3f9727e90cd3e988b676c6397ab6fe5e416aae65111f3ac5","last_reissued_at":"2026-07-05T00:45:42.723637Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:45:42.723637Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1804.05931","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":"2026-07-05T00:45:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zOckKw5wehiB5Oryx40v+ZrfQGrPK9U5c8em6gU14Zn5LZRrsk67wrDfLYQKzwStsarVBJBItUuqxRnaVtNWDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-01T09:21:42.082004Z"},"content_sha256":"deaa6637dd8eb70ac58421ab8d31feb3962cba8d086e631365f3cf98586286ee","schema_version":"1.0","event_id":"sha256:deaa6637dd8eb70ac58421ab8d31feb3962cba8d086e631365f3cf98586286ee"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:H5FHA2U3PXYE2P4XE7UQZU7JRC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Dual-energy electron beams from a compact laser-driven accelerator","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.optics","physics.plasm-ph"],"primary_cat":"physics.acc-ph","authors_text":"A. Buck, A. D\\\"opp, H. Ding, J. Goetzfried, J. Wenz, J. Xu, K. Khrennikov, L. Veisz, M. Gilljohann, M. Heigoldt, S. Karsch, S. Schindler, W. Helml","submitted_at":"2018-04-16T20:44:47Z","abstract_excerpt":"Ultrafast pump-probe experiments open the possibility to track fundamental material behaviour like changes in its electronic configuration in real time. To date, most of these experiments are performed using an electron or a high-energy photon beam, which is synchronized to an infrared laser pulse. Entirely new opportunities can be explored if not only a single, but multiple synchronized, ultra-short, high-energy beams are used. However, this requires advanced radiation sources that are capable of producing dual-energy electron beams, for example. Here, we demonstrate simultaneous generation o"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.05931","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1804.05931/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":"2026-07-05T00:45:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GlNr5zf0CX3P92xxY52IboZnh7zUlfwpHVEz/DsOzv48S5EWeHMIgmFqluE7pfJcRRqQkkXFpxq1xDRxgu5yDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-01T09:21:42.083818Z"},"content_sha256":"ab6782dcc122b06f8b2362d86cf3480178027189de8e8d53f072edd6d839df67","schema_version":"1.0","event_id":"sha256:ab6782dcc122b06f8b2362d86cf3480178027189de8e8d53f072edd6d839df67"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/H5FHA2U3PXYE2P4XE7UQZU7JRC/bundle.json","state_url":"https://pith.science/pith/H5FHA2U3PXYE2P4XE7UQZU7JRC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/H5FHA2U3PXYE2P4XE7UQZU7JRC/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":"2026-08-01T09:21:42Z","links":{"resolver":"https://pith.science/pith/H5FHA2U3PXYE2P4XE7UQZU7JRC","bundle":"https://pith.science/pith/H5FHA2U3PXYE2P4XE7UQZU7JRC/bundle.json","state":"https://pith.science/pith/H5FHA2U3PXYE2P4XE7UQZU7JRC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/H5FHA2U3PXYE2P4XE7UQZU7JRC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:H5FHA2U3PXYE2P4XE7UQZU7JRC","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":"961d54dda81f387214a7b7bc1d7bfdf5aa788347de8ccd8706c763b98b5e7d9d","cross_cats_sorted":["physics.optics","physics.plasm-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2018-04-16T20:44:47Z","title_canon_sha256":"8a765f732b0eae93caab20023205bb8087bc28217e0e2260aed1095b299cb294"},"schema_version":"1.0","source":{"id":"1804.05931","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.05931","created_at":"2026-07-05T00:45:42Z"},{"alias_kind":"arxiv_version","alias_value":"1804.05931v2","created_at":"2026-07-05T00:45:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.05931","created_at":"2026-07-05T00:45:42Z"},{"alias_kind":"pith_short_12","alias_value":"H5FHA2U3PXYE","created_at":"2026-07-05T00:45:42Z"},{"alias_kind":"pith_short_16","alias_value":"H5FHA2U3PXYE2P4X","created_at":"2026-07-05T00:45:42Z"},{"alias_kind":"pith_short_8","alias_value":"H5FHA2U3","created_at":"2026-07-05T00:45:42Z"}],"graph_snapshots":[{"event_id":"sha256:ab6782dcc122b06f8b2362d86cf3480178027189de8e8d53f072edd6d839df67","target":"graph","created_at":"2026-07-05T00:45:42Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/1804.05931/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Ultrafast pump-probe experiments open the possibility to track fundamental material behaviour like changes in its electronic configuration in real time. To date, most of these experiments are performed using an electron or a high-energy photon beam, which is synchronized to an infrared laser pulse. Entirely new opportunities can be explored if not only a single, but multiple synchronized, ultra-short, high-energy beams are used. However, this requires advanced radiation sources that are capable of producing dual-energy electron beams, for example. Here, we demonstrate simultaneous generation o","authors_text":"A. Buck, A. D\\\"opp, H. Ding, J. Goetzfried, J. Wenz, J. Xu, K. Khrennikov, L. Veisz, M. Gilljohann, M. Heigoldt, S. Karsch, S. Schindler, W. Helml","cross_cats":["physics.optics","physics.plasm-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2018-04-16T20:44:47Z","title":"Dual-energy electron beams from a compact laser-driven accelerator"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.05931","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:deaa6637dd8eb70ac58421ab8d31feb3962cba8d086e631365f3cf98586286ee","target":"record","created_at":"2026-07-05T00:45:42Z","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":"961d54dda81f387214a7b7bc1d7bfdf5aa788347de8ccd8706c763b98b5e7d9d","cross_cats_sorted":["physics.optics","physics.plasm-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2018-04-16T20:44:47Z","title_canon_sha256":"8a765f732b0eae93caab20023205bb8087bc28217e0e2260aed1095b299cb294"},"schema_version":"1.0","source":{"id":"1804.05931","kind":"arxiv","version":2}},"canonical_sha256":"3f4a706a9b7df04d3f9727e90cd3e988b676c6397ab6fe5e416aae65111f3ac5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3f4a706a9b7df04d3f9727e90cd3e988b676c6397ab6fe5e416aae65111f3ac5","first_computed_at":"2026-07-05T00:45:42.723637Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:45:42.723637Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"/Ai9Qus7Dr15F4j3cY53/YU04Bf5oj3F+9O3JQN0DkuRHqwluNX6az48m15ay7NcfMNQAqb958BqeL+pYxLJAQ==","signature_status":"signed_v1","signed_at":"2026-07-05T00:45:42.724033Z","signed_message":"canonical_sha256_bytes"},"source_id":"1804.05931","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:deaa6637dd8eb70ac58421ab8d31feb3962cba8d086e631365f3cf98586286ee","sha256:ab6782dcc122b06f8b2362d86cf3480178027189de8e8d53f072edd6d839df67"],"state_sha256":"43d72bc17316b9516396b49087cc567607cfa0cd1ed5545c6f9b6573589dd9d5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rYuAYLPH2xox+lTkOhoxWZiOlJ/TYWjPWY+CK5xAWp4MdpJTB/FD2xEzLvWZFNl+Y9OmB9aI1LH8AuZg4p9CBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-01T09:21:42.092777Z","bundle_sha256":"1c97952391fb3f8cc1e9a541f70a86e0f1ec26db73b877baeaba14ecfac08075"}}