{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:AEIEM53S65OMFXUYTDZTCFPAXI","short_pith_number":"pith:AEIEM53S","canonical_record":{"source":{"id":"1704.01239","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2017-04-05T01:50:10Z","cross_cats_sorted":["physics.ins-det"],"title_canon_sha256":"ec0ea8c9fba5fb5c34147fc42fbfddb15a52a843fe3e22e7df5ba191fac3c99d","abstract_canon_sha256":"191045e4e1c66c3ae7a7efe34a9e17b01f03c1cc73b5f75c98e4cfa6f930a1c3"},"schema_version":"1.0"},"canonical_sha256":"0110467772f75cc2de9898f33115e0ba29477c510b8b31a870ddb8bac878178f","source":{"kind":"arxiv","id":"1704.01239","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1704.01239","created_at":"2026-05-18T00:38:41Z"},{"alias_kind":"arxiv_version","alias_value":"1704.01239v4","created_at":"2026-05-18T00:38:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1704.01239","created_at":"2026-05-18T00:38:41Z"},{"alias_kind":"pith_short_12","alias_value":"AEIEM53S65OM","created_at":"2026-05-18T12:31:05Z"},{"alias_kind":"pith_short_16","alias_value":"AEIEM53S65OMFXUY","created_at":"2026-05-18T12:31:05Z"},{"alias_kind":"pith_short_8","alias_value":"AEIEM53S","created_at":"2026-05-18T12:31:05Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:AEIEM53S65OMFXUYTDZTCFPAXI","target":"record","payload":{"canonical_record":{"source":{"id":"1704.01239","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2017-04-05T01:50:10Z","cross_cats_sorted":["physics.ins-det"],"title_canon_sha256":"ec0ea8c9fba5fb5c34147fc42fbfddb15a52a843fe3e22e7df5ba191fac3c99d","abstract_canon_sha256":"191045e4e1c66c3ae7a7efe34a9e17b01f03c1cc73b5f75c98e4cfa6f930a1c3"},"schema_version":"1.0"},"canonical_sha256":"0110467772f75cc2de9898f33115e0ba29477c510b8b31a870ddb8bac878178f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:38:41.652982Z","signature_b64":"+1jTCamjvdukxTR6O8k59HyRfqE67oKTK5ANlmh/n7pOjDAMrDVxMtb/TRfHqD4JGAi5cBO4uSSw0URbHFT9Dg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0110467772f75cc2de9898f33115e0ba29477c510b8b31a870ddb8bac878178f","last_reissued_at":"2026-05-18T00:38:41.652325Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:38:41.652325Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1704.01239","source_version":4,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:38:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+zCkjZvZT5ROKF0b9Ce4NEnnmwZysTS4Wbut/tccTTOX8XuN6qRkM4Cq3nGTdtYLpNsg0JUuVPUUO2JH7CfmCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-19T22:28:37.902373Z"},"content_sha256":"07efba46255c4dab67de3b1ce00c078c53c8b8482c548a938a8ba57fe768fd4d","schema_version":"1.0","event_id":"sha256:07efba46255c4dab67de3b1ce00c078c53c8b8482c548a938a8ba57fe768fd4d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:AEIEM53S65OMFXUYTDZTCFPAXI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Theory and optical design of x-ray echo spectrometers","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.ins-det"],"primary_cat":"physics.optics","authors_text":"Yuri Shvyd'ko","submitted_at":"2017-04-05T01:50:10Z","abstract_excerpt":"X-ray echo spectroscopy, a space-domain counterpart of neutron spin echo, is a recently proposed inelastic x-ray scattering (IXS) technique. X-ray echo spectroscopy relies on imaging IXS spectra, and does not require x-ray monochromatization. Due to this, the echo-type IXS spectrometers are broadband, and thus have a potential to simultaneously provide dramatically increased signal strength, reduced measurement times, and higher resolution compared to the traditional narrow-band scanning-type IXS spectrometers. The theory of x-ray echo spectrometers presented in [1] is developed here further w"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1704.01239","kind":"arxiv","version":4},"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":"2026-05-18T00:38:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+op0OauS98IRqKzCTVum33E+36gV9O78OtsesesPECFqiWx3NRlHuamRznXsZlKQBTuplFW1BbOj6hfgMGxyAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-19T22:28:37.902722Z"},"content_sha256":"39252aac2de66d3e4c467b87b2b9ae1be512bf58aecd2a6cae35ea0258242ebb","schema_version":"1.0","event_id":"sha256:39252aac2de66d3e4c467b87b2b9ae1be512bf58aecd2a6cae35ea0258242ebb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/AEIEM53S65OMFXUYTDZTCFPAXI/bundle.json","state_url":"https://pith.science/pith/AEIEM53S65OMFXUYTDZTCFPAXI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/AEIEM53S65OMFXUYTDZTCFPAXI/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":"2026-06-19T22:28:37Z","links":{"resolver":"https://pith.science/pith/AEIEM53S65OMFXUYTDZTCFPAXI","bundle":"https://pith.science/pith/AEIEM53S65OMFXUYTDZTCFPAXI/bundle.json","state":"https://pith.science/pith/AEIEM53S65OMFXUYTDZTCFPAXI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/AEIEM53S65OMFXUYTDZTCFPAXI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:AEIEM53S65OMFXUYTDZTCFPAXI","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":"191045e4e1c66c3ae7a7efe34a9e17b01f03c1cc73b5f75c98e4cfa6f930a1c3","cross_cats_sorted":["physics.ins-det"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2017-04-05T01:50:10Z","title_canon_sha256":"ec0ea8c9fba5fb5c34147fc42fbfddb15a52a843fe3e22e7df5ba191fac3c99d"},"schema_version":"1.0","source":{"id":"1704.01239","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1704.01239","created_at":"2026-05-18T00:38:41Z"},{"alias_kind":"arxiv_version","alias_value":"1704.01239v4","created_at":"2026-05-18T00:38:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1704.01239","created_at":"2026-05-18T00:38:41Z"},{"alias_kind":"pith_short_12","alias_value":"AEIEM53S65OM","created_at":"2026-05-18T12:31:05Z"},{"alias_kind":"pith_short_16","alias_value":"AEIEM53S65OMFXUY","created_at":"2026-05-18T12:31:05Z"},{"alias_kind":"pith_short_8","alias_value":"AEIEM53S","created_at":"2026-05-18T12:31:05Z"}],"graph_snapshots":[{"event_id":"sha256:39252aac2de66d3e4c467b87b2b9ae1be512bf58aecd2a6cae35ea0258242ebb","target":"graph","created_at":"2026-05-18T00:38:41Z","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":"X-ray echo spectroscopy, a space-domain counterpart of neutron spin echo, is a recently proposed inelastic x-ray scattering (IXS) technique. X-ray echo spectroscopy relies on imaging IXS spectra, and does not require x-ray monochromatization. Due to this, the echo-type IXS spectrometers are broadband, and thus have a potential to simultaneously provide dramatically increased signal strength, reduced measurement times, and higher resolution compared to the traditional narrow-band scanning-type IXS spectrometers. The theory of x-ray echo spectrometers presented in [1] is developed here further w","authors_text":"Yuri Shvyd'ko","cross_cats":["physics.ins-det"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2017-04-05T01:50:10Z","title":"Theory and optical design of x-ray echo spectrometers"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1704.01239","kind":"arxiv","version":4},"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":"sha256:07efba46255c4dab67de3b1ce00c078c53c8b8482c548a938a8ba57fe768fd4d","target":"record","created_at":"2026-05-18T00:38:41Z","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":"191045e4e1c66c3ae7a7efe34a9e17b01f03c1cc73b5f75c98e4cfa6f930a1c3","cross_cats_sorted":["physics.ins-det"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2017-04-05T01:50:10Z","title_canon_sha256":"ec0ea8c9fba5fb5c34147fc42fbfddb15a52a843fe3e22e7df5ba191fac3c99d"},"schema_version":"1.0","source":{"id":"1704.01239","kind":"arxiv","version":4}},"canonical_sha256":"0110467772f75cc2de9898f33115e0ba29477c510b8b31a870ddb8bac878178f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0110467772f75cc2de9898f33115e0ba29477c510b8b31a870ddb8bac878178f","first_computed_at":"2026-05-18T00:38:41.652325Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:38:41.652325Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+1jTCamjvdukxTR6O8k59HyRfqE67oKTK5ANlmh/n7pOjDAMrDVxMtb/TRfHqD4JGAi5cBO4uSSw0URbHFT9Dg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:38:41.652982Z","signed_message":"canonical_sha256_bytes"},"source_id":"1704.01239","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:07efba46255c4dab67de3b1ce00c078c53c8b8482c548a938a8ba57fe768fd4d","sha256:39252aac2de66d3e4c467b87b2b9ae1be512bf58aecd2a6cae35ea0258242ebb"],"state_sha256":"589a938f9776f3169ab8433a7cb206d18d7454fd8869b16925dbdb647b0865e8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5u3pLhbmOKnZ12tNFpCZpv7qVd71jKzo3Q66+UCIy4lsOYPsaBjjxI6DQdANPGUaGityeZB/LxUMMq0MiRIaDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-19T22:28:37.904586Z","bundle_sha256":"0da9b47b7ea43c64509236aaa099f01142ef655442c5b47febf4f4d22865259c"}}