{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:UF2PZ72GFPJXSXZ5PGOSNC22LT","short_pith_number":"pith:UF2PZ72G","canonical_record":{"source":{"id":"1904.04305","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2019-04-08T19:14:09Z","cross_cats_sorted":[],"title_canon_sha256":"504abf192102c6274d032e8cb7a38f078cc4dd73087fbf1041cd17d88edd80e1","abstract_canon_sha256":"79db18c4594f6d8da254f439b671dcf4499c7b364b29c68b9563c259da0347f5"},"schema_version":"1.0"},"canonical_sha256":"a174fcff462bd3795f3d799d268b5a5cfb44dc0f2e57f5f9aa98e6e6d63e2bbc","source":{"kind":"arxiv","id":"1904.04305","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1904.04305","created_at":"2026-07-05T00:30:04Z"},{"alias_kind":"arxiv_version","alias_value":"1904.04305v2","created_at":"2026-07-05T00:30:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.04305","created_at":"2026-07-05T00:30:04Z"},{"alias_kind":"pith_short_12","alias_value":"UF2PZ72GFPJX","created_at":"2026-07-05T00:30:04Z"},{"alias_kind":"pith_short_16","alias_value":"UF2PZ72GFPJXSXZ5","created_at":"2026-07-05T00:30:04Z"},{"alias_kind":"pith_short_8","alias_value":"UF2PZ72G","created_at":"2026-07-05T00:30:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:UF2PZ72GFPJXSXZ5PGOSNC22LT","target":"record","payload":{"canonical_record":{"source":{"id":"1904.04305","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2019-04-08T19:14:09Z","cross_cats_sorted":[],"title_canon_sha256":"504abf192102c6274d032e8cb7a38f078cc4dd73087fbf1041cd17d88edd80e1","abstract_canon_sha256":"79db18c4594f6d8da254f439b671dcf4499c7b364b29c68b9563c259da0347f5"},"schema_version":"1.0"},"canonical_sha256":"a174fcff462bd3795f3d799d268b5a5cfb44dc0f2e57f5f9aa98e6e6d63e2bbc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:30:04.366800Z","signature_b64":"4ZqpiVBXw2hJWxUYGLW64FdcHiB6a3G/jfFKIoR4SSWvd5efKJdVllUnqUR1BU7BIwCbJqS8+IKuc8LklFfcAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a174fcff462bd3795f3d799d268b5a5cfb44dc0f2e57f5f9aa98e6e6d63e2bbc","last_reissued_at":"2026-07-05T00:30:04.366373Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:30:04.366373Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1904.04305","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":"2026-07-05T00:30:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RM/y4oCA7jcWWR1KzAIa19NyT4mshAMjTPS8VrDaYjQkt+93aEUBXVXpjo3cfRzEz6zsOySe8lsRpi7/TPBmCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T21:20:03.317551Z"},"content_sha256":"d826e84616561649b97345238578e06152dd81917ace2f811e8ba175d0dacd26","schema_version":"1.0","event_id":"sha256:d826e84616561649b97345238578e06152dd81917ace2f811e8ba175d0dacd26"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:UF2PZ72GFPJXSXZ5PGOSNC22LT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Ultrarelativistic polarized positron jets via collision of electron and ultraintense laser beams","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.plasm-ph","authors_text":"Christoph H. Keitel, Feng Wan, Jian-Xing Li, Karen Z. Hatsagortsyan, Rashid Shaisultanov, Yan-Fei Li","submitted_at":"2019-04-08T19:14:09Z","abstract_excerpt":"Relativistic spin-polarized positron beams are indispensable for future electron-positron colliders to test modern high-energy physics theory with high precision. However, present techniques require very large scale facilities for those experiments.\n  We put forward a novel efficient way for generating ultrarelativistic polarized positron beams employing currently available laser fields. For this purpose the generation of polarized positrons via multiphoton Breit-Wheeler pair production and the associated spin dynamics in single-shot interaction of an ultraintense laser pulse with an ultrarela"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.04305","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/1904.04305/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":"2026-07-05T00:30:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7d3k8+RrpvLZxi2ToCWmp5qc02gpq2W7ro05noSOt4M0xKIEcGXK8qhh/Ls3uss9ns2RDX1syWQkMzRJ365HAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T21:20:03.317986Z"},"content_sha256":"48033ed268e18da3f1b9a42a3ae27069a63b10248ef9beffb68b09aa03022e06","schema_version":"1.0","event_id":"sha256:48033ed268e18da3f1b9a42a3ae27069a63b10248ef9beffb68b09aa03022e06"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UF2PZ72GFPJXSXZ5PGOSNC22LT/bundle.json","state_url":"https://pith.science/pith/UF2PZ72GFPJXSXZ5PGOSNC22LT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UF2PZ72GFPJXSXZ5PGOSNC22LT/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":"2026-08-03T21:20:03Z","links":{"resolver":"https://pith.science/pith/UF2PZ72GFPJXSXZ5PGOSNC22LT","bundle":"https://pith.science/pith/UF2PZ72GFPJXSXZ5PGOSNC22LT/bundle.json","state":"https://pith.science/pith/UF2PZ72GFPJXSXZ5PGOSNC22LT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UF2PZ72GFPJXSXZ5PGOSNC22LT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:UF2PZ72GFPJXSXZ5PGOSNC22LT","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":"79db18c4594f6d8da254f439b671dcf4499c7b364b29c68b9563c259da0347f5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2019-04-08T19:14:09Z","title_canon_sha256":"504abf192102c6274d032e8cb7a38f078cc4dd73087fbf1041cd17d88edd80e1"},"schema_version":"1.0","source":{"id":"1904.04305","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1904.04305","created_at":"2026-07-05T00:30:04Z"},{"alias_kind":"arxiv_version","alias_value":"1904.04305v2","created_at":"2026-07-05T00:30:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.04305","created_at":"2026-07-05T00:30:04Z"},{"alias_kind":"pith_short_12","alias_value":"UF2PZ72GFPJX","created_at":"2026-07-05T00:30:04Z"},{"alias_kind":"pith_short_16","alias_value":"UF2PZ72GFPJXSXZ5","created_at":"2026-07-05T00:30:04Z"},{"alias_kind":"pith_short_8","alias_value":"UF2PZ72G","created_at":"2026-07-05T00:30:04Z"}],"graph_snapshots":[{"event_id":"sha256:48033ed268e18da3f1b9a42a3ae27069a63b10248ef9beffb68b09aa03022e06","target":"graph","created_at":"2026-07-05T00:30:04Z","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/1904.04305/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Relativistic spin-polarized positron beams are indispensable for future electron-positron colliders to test modern high-energy physics theory with high precision. However, present techniques require very large scale facilities for those experiments.\n  We put forward a novel efficient way for generating ultrarelativistic polarized positron beams employing currently available laser fields. For this purpose the generation of polarized positrons via multiphoton Breit-Wheeler pair production and the associated spin dynamics in single-shot interaction of an ultraintense laser pulse with an ultrarela","authors_text":"Christoph H. Keitel, Feng Wan, Jian-Xing Li, Karen Z. Hatsagortsyan, Rashid Shaisultanov, Yan-Fei Li","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2019-04-08T19:14:09Z","title":"Ultrarelativistic polarized positron jets via collision of electron and ultraintense laser beams"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.04305","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:d826e84616561649b97345238578e06152dd81917ace2f811e8ba175d0dacd26","target":"record","created_at":"2026-07-05T00:30:04Z","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":"79db18c4594f6d8da254f439b671dcf4499c7b364b29c68b9563c259da0347f5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2019-04-08T19:14:09Z","title_canon_sha256":"504abf192102c6274d032e8cb7a38f078cc4dd73087fbf1041cd17d88edd80e1"},"schema_version":"1.0","source":{"id":"1904.04305","kind":"arxiv","version":2}},"canonical_sha256":"a174fcff462bd3795f3d799d268b5a5cfb44dc0f2e57f5f9aa98e6e6d63e2bbc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a174fcff462bd3795f3d799d268b5a5cfb44dc0f2e57f5f9aa98e6e6d63e2bbc","first_computed_at":"2026-07-05T00:30:04.366373Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:30:04.366373Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"4ZqpiVBXw2hJWxUYGLW64FdcHiB6a3G/jfFKIoR4SSWvd5efKJdVllUnqUR1BU7BIwCbJqS8+IKuc8LklFfcAg==","signature_status":"signed_v1","signed_at":"2026-07-05T00:30:04.366800Z","signed_message":"canonical_sha256_bytes"},"source_id":"1904.04305","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d826e84616561649b97345238578e06152dd81917ace2f811e8ba175d0dacd26","sha256:48033ed268e18da3f1b9a42a3ae27069a63b10248ef9beffb68b09aa03022e06"],"state_sha256":"4b95be03846dbca9b4cfe94eb5973783e468a22c89112f67287394beb0c647b5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sgxkYgy53U1ccnS0ers20mWQY/nB2Uln9I+gXatBeKMAurcF2PRIeWJ+KzqaEHR7sQkco2cekOa+8tSf0r2gAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T21:20:03.321801Z","bundle_sha256":"bbe50b2100f59734726747798d855eacc284a73a2fd8c0e282b6b78d439b7b93"}}