{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:2ASEQ6EZQONWXYYLWDFFTMOPEK","short_pith_number":"pith:2ASEQ6EZ","canonical_record":{"source":{"id":"2607.02373","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2026-07-02T16:14:05Z","cross_cats_sorted":["physics.acc-ph"],"title_canon_sha256":"97e63e7c8f830124ead17d1d3a1ef70d881372526894f073f700e1c87a72a18d","abstract_canon_sha256":"0b49965b2b8c1f2b2202b258ff7b5eff5d4a5b88f4bd76f8e1d7e196fd0deb96"},"schema_version":"1.0"},"canonical_sha256":"d024487899839b6be30bb0ca59b1cf22a643356bce45d1338469a472bb72cc6b","source":{"kind":"arxiv","id":"2607.02373","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.02373","created_at":"2026-07-03T01:17:57Z"},{"alias_kind":"arxiv_version","alias_value":"2607.02373v1","created_at":"2026-07-03T01:17:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.02373","created_at":"2026-07-03T01:17:57Z"},{"alias_kind":"pith_short_12","alias_value":"2ASEQ6EZQONW","created_at":"2026-07-03T01:17:57Z"},{"alias_kind":"pith_short_16","alias_value":"2ASEQ6EZQONWXYYL","created_at":"2026-07-03T01:17:57Z"},{"alias_kind":"pith_short_8","alias_value":"2ASEQ6EZ","created_at":"2026-07-03T01:17:57Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:2ASEQ6EZQONWXYYLWDFFTMOPEK","target":"record","payload":{"canonical_record":{"source":{"id":"2607.02373","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2026-07-02T16:14:05Z","cross_cats_sorted":["physics.acc-ph"],"title_canon_sha256":"97e63e7c8f830124ead17d1d3a1ef70d881372526894f073f700e1c87a72a18d","abstract_canon_sha256":"0b49965b2b8c1f2b2202b258ff7b5eff5d4a5b88f4bd76f8e1d7e196fd0deb96"},"schema_version":"1.0"},"canonical_sha256":"d024487899839b6be30bb0ca59b1cf22a643356bce45d1338469a472bb72cc6b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-03T01:17:57.058553Z","signature_b64":"yg5rf7Ns/RWNTd2SBJhIMTRk0OSEgLVVq0GqIynxvMev0Lkq7jiZP2+q8A9kOjjTBEv6eHDOOfq7HOdJRu8mDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d024487899839b6be30bb0ca59b1cf22a643356bce45d1338469a472bb72cc6b","last_reissued_at":"2026-07-03T01:17:57.057654Z","signature_status":"signed_v1","first_computed_at":"2026-07-03T01:17:57.057654Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2607.02373","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":"2026-07-03T01:17:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Aaj971jY2qejSSr0qo/SByur4heRGwFKj7PQD/0beqVd4O9G3K45mJ/gjQoxSvO3XfhAFP4QXhHqtbSRvX6hCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T19:19:38.125672Z"},"content_sha256":"3934dd6e8efaf9e208faed295e6c75f702e7279a3e4d8ba5b597a31fb4a11686","schema_version":"1.0","event_id":"sha256:3934dd6e8efaf9e208faed295e6c75f702e7279a3e4d8ba5b597a31fb4a11686"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:2ASEQ6EZQONWXYYLWDFFTMOPEK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Brilliant multi-GeV Compton gamma-ray source seeded by a photon accelerator","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.acc-ph"],"primary_cat":"physics.plasm-ph","authors_text":"Alexander G. R. Thomas, Arkady Gonoskov, Christopher D. Murphy, Mattias Marklund, Michael J. Quin, Stepan S. Bulanov, Thomas G. Blackburn","submitted_at":"2026-07-02T16:14:05Z","abstract_excerpt":"High-brilliance sources of polarized gamma rays are widely sought after to pump and probe matter at subatomic length scales. However, existing accelerator facilities and optical lasers cannot reach a sufficiently high center-of-mass energy to produce polarized, multi-GeV gamma rays from unpolarized electrons via inverse Compton scattering. Here we propose a scheme where the optical laser photons are first \"accelerated\" to the extreme ultraviolet in a beam-driven plasma wakefield, then reflected by a plasma mirror back onto a trailing electron beam, producing a flash of gamma rays. Numerical si"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.02373","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/2607.02373/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":"2026-07-03T01:17:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UQCwDnvHHbjqQo9Cfpm4mj2vn6B1ipC7G0n4Fa/jT3a0LYzLTgrD5+9UFbo8uMNuDqS7Hc9Cs4UnFd05nTY5Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T19:19:38.126049Z"},"content_sha256":"9fd390391b58bb7edc6d5a59697eb8071e632420ca2dcd3ff0efa2d15417bfc3","schema_version":"1.0","event_id":"sha256:9fd390391b58bb7edc6d5a59697eb8071e632420ca2dcd3ff0efa2d15417bfc3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2ASEQ6EZQONWXYYLWDFFTMOPEK/bundle.json","state_url":"https://pith.science/pith/2ASEQ6EZQONWXYYLWDFFTMOPEK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2ASEQ6EZQONWXYYLWDFFTMOPEK/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":"2026-07-06T19:19:38Z","links":{"resolver":"https://pith.science/pith/2ASEQ6EZQONWXYYLWDFFTMOPEK","bundle":"https://pith.science/pith/2ASEQ6EZQONWXYYLWDFFTMOPEK/bundle.json","state":"https://pith.science/pith/2ASEQ6EZQONWXYYLWDFFTMOPEK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2ASEQ6EZQONWXYYLWDFFTMOPEK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:2ASEQ6EZQONWXYYLWDFFTMOPEK","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":"0b49965b2b8c1f2b2202b258ff7b5eff5d4a5b88f4bd76f8e1d7e196fd0deb96","cross_cats_sorted":["physics.acc-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2026-07-02T16:14:05Z","title_canon_sha256":"97e63e7c8f830124ead17d1d3a1ef70d881372526894f073f700e1c87a72a18d"},"schema_version":"1.0","source":{"id":"2607.02373","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.02373","created_at":"2026-07-03T01:17:57Z"},{"alias_kind":"arxiv_version","alias_value":"2607.02373v1","created_at":"2026-07-03T01:17:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.02373","created_at":"2026-07-03T01:17:57Z"},{"alias_kind":"pith_short_12","alias_value":"2ASEQ6EZQONW","created_at":"2026-07-03T01:17:57Z"},{"alias_kind":"pith_short_16","alias_value":"2ASEQ6EZQONWXYYL","created_at":"2026-07-03T01:17:57Z"},{"alias_kind":"pith_short_8","alias_value":"2ASEQ6EZ","created_at":"2026-07-03T01:17:57Z"}],"graph_snapshots":[{"event_id":"sha256:9fd390391b58bb7edc6d5a59697eb8071e632420ca2dcd3ff0efa2d15417bfc3","target":"graph","created_at":"2026-07-03T01:17:57Z","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/2607.02373/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"High-brilliance sources of polarized gamma rays are widely sought after to pump and probe matter at subatomic length scales. However, existing accelerator facilities and optical lasers cannot reach a sufficiently high center-of-mass energy to produce polarized, multi-GeV gamma rays from unpolarized electrons via inverse Compton scattering. Here we propose a scheme where the optical laser photons are first \"accelerated\" to the extreme ultraviolet in a beam-driven plasma wakefield, then reflected by a plasma mirror back onto a trailing electron beam, producing a flash of gamma rays. Numerical si","authors_text":"Alexander G. R. Thomas, Arkady Gonoskov, Christopher D. Murphy, Mattias Marklund, Michael J. Quin, Stepan S. Bulanov, Thomas G. Blackburn","cross_cats":["physics.acc-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2026-07-02T16:14:05Z","title":"Brilliant multi-GeV Compton gamma-ray source seeded by a photon accelerator"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.02373","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":"sha256:3934dd6e8efaf9e208faed295e6c75f702e7279a3e4d8ba5b597a31fb4a11686","target":"record","created_at":"2026-07-03T01:17:57Z","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":"0b49965b2b8c1f2b2202b258ff7b5eff5d4a5b88f4bd76f8e1d7e196fd0deb96","cross_cats_sorted":["physics.acc-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2026-07-02T16:14:05Z","title_canon_sha256":"97e63e7c8f830124ead17d1d3a1ef70d881372526894f073f700e1c87a72a18d"},"schema_version":"1.0","source":{"id":"2607.02373","kind":"arxiv","version":1}},"canonical_sha256":"d024487899839b6be30bb0ca59b1cf22a643356bce45d1338469a472bb72cc6b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d024487899839b6be30bb0ca59b1cf22a643356bce45d1338469a472bb72cc6b","first_computed_at":"2026-07-03T01:17:57.057654Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-03T01:17:57.057654Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"yg5rf7Ns/RWNTd2SBJhIMTRk0OSEgLVVq0GqIynxvMev0Lkq7jiZP2+q8A9kOjjTBEv6eHDOOfq7HOdJRu8mDw==","signature_status":"signed_v1","signed_at":"2026-07-03T01:17:57.058553Z","signed_message":"canonical_sha256_bytes"},"source_id":"2607.02373","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3934dd6e8efaf9e208faed295e6c75f702e7279a3e4d8ba5b597a31fb4a11686","sha256:9fd390391b58bb7edc6d5a59697eb8071e632420ca2dcd3ff0efa2d15417bfc3"],"state_sha256":"8dc25378884a96ed5a479290550e5a30acddc1345f0cddca6ded4425c24f8e11"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dg8HVzf4+X3WcVvj8CkeWaFbY1YVUyDXiKKtZZHIEhSPLYr21dOJROzllLEPYHPZ+Zrf8MBzn34wdd5WvN73DA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-06T19:19:38.128102Z","bundle_sha256":"74a8a49e95ea50d73c539a31374b0ee0ba2118ddd62ebfe477cd8859ad6781b9"}}