{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:EEKH36ZYMWZTGYHRIGB7SSJGS4","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":"c91eef292a9133b393228f0a82da5228a1df01fa2e1c12c3bbdb66ef71498fc4","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-03-10T20:00:21Z","title_canon_sha256":"a92778a04c18bc43eafdee013de5640031d7e169ce6c8654a3f2f0b3ccc4c61e"},"schema_version":"1.0","source":{"id":"1503.03072","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.03072","created_at":"2026-05-18T02:25:04Z"},{"alias_kind":"arxiv_version","alias_value":"1503.03072v1","created_at":"2026-05-18T02:25:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.03072","created_at":"2026-05-18T02:25:04Z"},{"alias_kind":"pith_short_12","alias_value":"EEKH36ZYMWZT","created_at":"2026-05-18T12:29:19Z"},{"alias_kind":"pith_short_16","alias_value":"EEKH36ZYMWZTGYHR","created_at":"2026-05-18T12:29:19Z"},{"alias_kind":"pith_short_8","alias_value":"EEKH36ZY","created_at":"2026-05-18T12:29:19Z"}],"graph_snapshots":[{"event_id":"sha256:bc56df592257f2c03d7284009017e9d7a1b30c5af659fde3e94510b05da0f6e5","target":"graph","created_at":"2026-05-18T02:25:04Z","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"},"paper":{"abstract_excerpt":"Ten years of operations of the Swift satellite have allow us to collect a small sample of long Gamma-Ray Bursts (GRBs) at redshift larger than six. I will review here the present status of this research field and discuss the possible use of GRBs as a fundamental new tool to explore the early Universe, complementary to quasar and galaxy surveys.","authors_text":"R. Salvaterra","cross_cats":["astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-03-10T20:00:21Z","title":"High redshift Gamma-Ray Bursts"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.03072","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:c8fb512af82dc5a3c1d143718edbfc4c235db72d9d97ccfa827502adfea6e351","target":"record","created_at":"2026-05-18T02:25:04Z","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":"c91eef292a9133b393228f0a82da5228a1df01fa2e1c12c3bbdb66ef71498fc4","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2015-03-10T20:00:21Z","title_canon_sha256":"a92778a04c18bc43eafdee013de5640031d7e169ce6c8654a3f2f0b3ccc4c61e"},"schema_version":"1.0","source":{"id":"1503.03072","kind":"arxiv","version":1}},"canonical_sha256":"21147dfb3865b33360f14183f949269733f058e669b03680db459c67fbbb9019","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"21147dfb3865b33360f14183f949269733f058e669b03680db459c67fbbb9019","first_computed_at":"2026-05-18T02:25:04.306543Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:25:04.306543Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1vp3lU1ckUnbjJGKK5e+VWiJNLChXY/IuXC2zgCtmxdvn8y3dQhT5jDQYgMrWvuHsP91i/x4JVnMIn1RuzMUCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:25:04.306915Z","signed_message":"canonical_sha256_bytes"},"source_id":"1503.03072","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c8fb512af82dc5a3c1d143718edbfc4c235db72d9d97ccfa827502adfea6e351","sha256:bc56df592257f2c03d7284009017e9d7a1b30c5af659fde3e94510b05da0f6e5"],"state_sha256":"ce3be26f843bf1c9ad71164a1aa5c3cb0fa07d4fedda483b9f72ee6bd784afad"}