{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:BXGNHBHZGUO6IEQEQYOZRQ4WYX","short_pith_number":"pith:BXGNHBHZ","canonical_record":{"source":{"id":"1301.4087","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2013-01-17T13:12:26Z","cross_cats_sorted":["physics.ins-det","physics.optics"],"title_canon_sha256":"33d91277996b88279f96ff15c0a9e08e610c643ff0f66f1dd44db7e02b25247b","abstract_canon_sha256":"ee25f94edd124a66e734ddb8d95cbb59cc1b1a6ad7bcb928e666a1815886c547"},"schema_version":"1.0"},"canonical_sha256":"0dccd384f9351de41204861d98c396c5c083a563178dac3339e756593e7398ca","source":{"kind":"arxiv","id":"1301.4087","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1301.4087","created_at":"2026-05-18T03:36:14Z"},{"alias_kind":"arxiv_version","alias_value":"1301.4087v1","created_at":"2026-05-18T03:36:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1301.4087","created_at":"2026-05-18T03:36:14Z"},{"alias_kind":"pith_short_12","alias_value":"BXGNHBHZGUO6","created_at":"2026-05-18T12:27:40Z"},{"alias_kind":"pith_short_16","alias_value":"BXGNHBHZGUO6IEQE","created_at":"2026-05-18T12:27:40Z"},{"alias_kind":"pith_short_8","alias_value":"BXGNHBHZ","created_at":"2026-05-18T12:27:40Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:BXGNHBHZGUO6IEQEQYOZRQ4WYX","target":"record","payload":{"canonical_record":{"source":{"id":"1301.4087","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2013-01-17T13:12:26Z","cross_cats_sorted":["physics.ins-det","physics.optics"],"title_canon_sha256":"33d91277996b88279f96ff15c0a9e08e610c643ff0f66f1dd44db7e02b25247b","abstract_canon_sha256":"ee25f94edd124a66e734ddb8d95cbb59cc1b1a6ad7bcb928e666a1815886c547"},"schema_version":"1.0"},"canonical_sha256":"0dccd384f9351de41204861d98c396c5c083a563178dac3339e756593e7398ca","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:36:14.276970Z","signature_b64":"5B1Zq/oLuX5FwrVpObnKPnw9BkQCHPDVZR7mZjnLKrhHrarutZegvRP9/2/CbD+0r4MMHsrnpJ/a6uR5IgJmCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0dccd384f9351de41204861d98c396c5c083a563178dac3339e756593e7398ca","last_reissued_at":"2026-05-18T03:36:14.276384Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:36:14.276384Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1301.4087","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":"2026-05-18T03:36:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6hCk/db7DPs4QbsEDwUbCoXn2lw1ALDVptktnGe+B65LEATBDcMMOgQMzpIr9gFnnu5TuifsT8uoFLoP2EavAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-26T06:58:14.158946Z"},"content_sha256":"1c510511627ed3c05fa0527e90ead2d2523b4928edb8f649d89aa032019a8f37","schema_version":"1.0","event_id":"sha256:1c510511627ed3c05fa0527e90ead2d2523b4928edb8f649d89aa032019a8f37"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:BXGNHBHZGUO6IEQEQYOZRQ4WYX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The monochromator beamline at FLASH: performance, capabilities and upgrade plans","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.ins-det","physics.optics"],"primary_cat":"physics.acc-ph","authors_text":"Josef Feldhaus, Natalia Gerasimova, Siarhei Dziarzhytski","submitted_at":"2013-01-17T13:12:26Z","abstract_excerpt":"The monochromator beamline at the FLASH facility at DESY is the worldwide first XUV monochromator beamline operational on a free electron laser (FEL)source. Being a single-user machine, FLASH demands a high flexibility of the instrumentation to fulfil the needs of diverse experiments performed by a multidisciplinary user community. Thus, the beamline has not only been used for high-resolution spectroscopy that it was originally designed for, but also for pump-probe experiments controlling the temporal-spectral properties at moderate resolution, and as a filter for high harmonics of the FEL at "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1301.4087","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":"2026-05-18T03:36:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JLoQctdTfV6wlz4dqvwXg1K4jvCfndmFvE2+bgAh85F69N4Bckopo3j7wQc7hAACHM9RN3Tx6NHtbZjBFoOSAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-26T06:58:14.159291Z"},"content_sha256":"a7a00cf7ea3e5020de39cc7b452d6b3f1bfbd2bde88d2b18564cda6fd3d4aa17","schema_version":"1.0","event_id":"sha256:a7a00cf7ea3e5020de39cc7b452d6b3f1bfbd2bde88d2b18564cda6fd3d4aa17"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BXGNHBHZGUO6IEQEQYOZRQ4WYX/bundle.json","state_url":"https://pith.science/pith/BXGNHBHZGUO6IEQEQYOZRQ4WYX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BXGNHBHZGUO6IEQEQYOZRQ4WYX/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":"2026-06-26T06:58:14Z","links":{"resolver":"https://pith.science/pith/BXGNHBHZGUO6IEQEQYOZRQ4WYX","bundle":"https://pith.science/pith/BXGNHBHZGUO6IEQEQYOZRQ4WYX/bundle.json","state":"https://pith.science/pith/BXGNHBHZGUO6IEQEQYOZRQ4WYX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BXGNHBHZGUO6IEQEQYOZRQ4WYX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:BXGNHBHZGUO6IEQEQYOZRQ4WYX","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":"ee25f94edd124a66e734ddb8d95cbb59cc1b1a6ad7bcb928e666a1815886c547","cross_cats_sorted":["physics.ins-det","physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2013-01-17T13:12:26Z","title_canon_sha256":"33d91277996b88279f96ff15c0a9e08e610c643ff0f66f1dd44db7e02b25247b"},"schema_version":"1.0","source":{"id":"1301.4087","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1301.4087","created_at":"2026-05-18T03:36:14Z"},{"alias_kind":"arxiv_version","alias_value":"1301.4087v1","created_at":"2026-05-18T03:36:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1301.4087","created_at":"2026-05-18T03:36:14Z"},{"alias_kind":"pith_short_12","alias_value":"BXGNHBHZGUO6","created_at":"2026-05-18T12:27:40Z"},{"alias_kind":"pith_short_16","alias_value":"BXGNHBHZGUO6IEQE","created_at":"2026-05-18T12:27:40Z"},{"alias_kind":"pith_short_8","alias_value":"BXGNHBHZ","created_at":"2026-05-18T12:27:40Z"}],"graph_snapshots":[{"event_id":"sha256:a7a00cf7ea3e5020de39cc7b452d6b3f1bfbd2bde88d2b18564cda6fd3d4aa17","target":"graph","created_at":"2026-05-18T03:36:14Z","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":"The monochromator beamline at the FLASH facility at DESY is the worldwide first XUV monochromator beamline operational on a free electron laser (FEL)source. Being a single-user machine, FLASH demands a high flexibility of the instrumentation to fulfil the needs of diverse experiments performed by a multidisciplinary user community. Thus, the beamline has not only been used for high-resolution spectroscopy that it was originally designed for, but also for pump-probe experiments controlling the temporal-spectral properties at moderate resolution, and as a filter for high harmonics of the FEL at ","authors_text":"Josef Feldhaus, Natalia Gerasimova, Siarhei Dziarzhytski","cross_cats":["physics.ins-det","physics.optics"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2013-01-17T13:12:26Z","title":"The monochromator beamline at FLASH: performance, capabilities and upgrade plans"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1301.4087","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":"sha256:1c510511627ed3c05fa0527e90ead2d2523b4928edb8f649d89aa032019a8f37","target":"record","created_at":"2026-05-18T03:36:14Z","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":"ee25f94edd124a66e734ddb8d95cbb59cc1b1a6ad7bcb928e666a1815886c547","cross_cats_sorted":["physics.ins-det","physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.acc-ph","submitted_at":"2013-01-17T13:12:26Z","title_canon_sha256":"33d91277996b88279f96ff15c0a9e08e610c643ff0f66f1dd44db7e02b25247b"},"schema_version":"1.0","source":{"id":"1301.4087","kind":"arxiv","version":1}},"canonical_sha256":"0dccd384f9351de41204861d98c396c5c083a563178dac3339e756593e7398ca","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0dccd384f9351de41204861d98c396c5c083a563178dac3339e756593e7398ca","first_computed_at":"2026-05-18T03:36:14.276384Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:36:14.276384Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"5B1Zq/oLuX5FwrVpObnKPnw9BkQCHPDVZR7mZjnLKrhHrarutZegvRP9/2/CbD+0r4MMHsrnpJ/a6uR5IgJmCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:36:14.276970Z","signed_message":"canonical_sha256_bytes"},"source_id":"1301.4087","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1c510511627ed3c05fa0527e90ead2d2523b4928edb8f649d89aa032019a8f37","sha256:a7a00cf7ea3e5020de39cc7b452d6b3f1bfbd2bde88d2b18564cda6fd3d4aa17"],"state_sha256":"11399e8ed8ebd306507fbda0db1a28e88a79a41ceb46ed570ffcb94c2ce263f6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aQHxoe5aEqsvzYPjHAi4jJA3afJ/cwFMmRXCfebHd7XQgk5G9w/14UW4lKOQAGXVcq9np6MJmO8kaexqOY2gCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-26T06:58:14.161225Z","bundle_sha256":"a2dbf1f9cf1ba859a185b51b60111a3e57eaf743ce7fb2a5583f5ddcafc10669"}}