{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:QEOPKJSEXJ4ZKCLIHF34ZWEIVV","short_pith_number":"pith:QEOPKJSE","canonical_record":{"source":{"id":"2202.04750","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2022-02-09T22:22:46Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"da1363ab03d427c8d48fca1ee402f81837aa9c6605f4c9ed1cb1bff14455a18a","abstract_canon_sha256":"42d5c27edd65b5836e78b5506dbd286c6ef68067f7f1d1bd928ad97209f25aeb"},"schema_version":"1.0"},"canonical_sha256":"811cf52644ba799509683977ccd888ad6ece6d1bb3c35940fc706a5cad78d5da","source":{"kind":"arxiv","id":"2202.04750","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2202.04750","created_at":"2026-07-05T03:59:03Z"},{"alias_kind":"arxiv_version","alias_value":"2202.04750v1","created_at":"2026-07-05T03:59:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2202.04750","created_at":"2026-07-05T03:59:03Z"},{"alias_kind":"pith_short_12","alias_value":"QEOPKJSEXJ4Z","created_at":"2026-07-05T03:59:03Z"},{"alias_kind":"pith_short_16","alias_value":"QEOPKJSEXJ4ZKCLI","created_at":"2026-07-05T03:59:03Z"},{"alias_kind":"pith_short_8","alias_value":"QEOPKJSE","created_at":"2026-07-05T03:59:03Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:QEOPKJSEXJ4ZKCLIHF34ZWEIVV","target":"record","payload":{"canonical_record":{"source":{"id":"2202.04750","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2022-02-09T22:22:46Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"da1363ab03d427c8d48fca1ee402f81837aa9c6605f4c9ed1cb1bff14455a18a","abstract_canon_sha256":"42d5c27edd65b5836e78b5506dbd286c6ef68067f7f1d1bd928ad97209f25aeb"},"schema_version":"1.0"},"canonical_sha256":"811cf52644ba799509683977ccd888ad6ece6d1bb3c35940fc706a5cad78d5da","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:59:03.333473Z","signature_b64":"r5Nvtvlas8AHSD4lbxnNkOmP/4Nsske43fY2hHjvVLrv+0Qv0GM+I+CFycNQJyenBTDdLAIWy0uvasnhVWNqBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"811cf52644ba799509683977ccd888ad6ece6d1bb3c35940fc706a5cad78d5da","last_reissued_at":"2026-07-05T03:59:03.333051Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:59:03.333051Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2202.04750","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":"2026-07-05T03:59:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"s4CgzQvt/yz66dwRVvy0RluynpOtl1fOqzMnrAdsYrjG1n6oZf1Ev6cgwx1zGF/oM/mBAXuqq/3A8h2MXZ33DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-20T09:47:48.321516Z"},"content_sha256":"a0be480218ea351ec616459178807452041c8945a5ac3ff38c29e49449c60e52","schema_version":"1.0","event_id":"sha256:a0be480218ea351ec616459178807452041c8945a5ac3ff38c29e49449c60e52"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:QEOPKJSEXJ4ZKCLIHF34ZWEIVV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The strongly irradiated planets in Praesepe","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.EP","authors_text":"George W. King, L\\'ia R. Corrales, Marcel A. Ag\\\"ueros, Nicola J. Miller, Peter J. Wheatley, Victoria A. Fawcett","submitted_at":"2022-02-09T22:22:46Z","abstract_excerpt":"We present an analysis of XMM-Newton observations of four stars in the young (670 Myr) open cluster Praesepe. The planets hosted by these stars all lie close in radius-period space to the radius-period valley and/or the Neptunian desert, two features that photoevaporation by X-ray and extreme ultraviolet (EUV) photons could be driving. Although the stars are no longer in the saturated regime, strong X-ray and extreme ultraviolet irradiation is still ongoing. Based on EUV time evolution slopes we derived in a previous paper, in all four cases, two-thirds of their EUV irradiation is still to com"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2202.04750","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/2202.04750/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":"2026-07-05T03:59:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"N9YTmjPYjgofW0fAmuoProHGJ71VXw1HG62ffBbAQk3IbVHWqybqUD8NIdAoHDaWRloIRsqZm3mzxRpVU3qaDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-20T09:47:48.322017Z"},"content_sha256":"1d1980be9bfe0c9fe16dc5359adf93964d868dcc191ca30ebc2d4518875c690f","schema_version":"1.0","event_id":"sha256:1d1980be9bfe0c9fe16dc5359adf93964d868dcc191ca30ebc2d4518875c690f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QEOPKJSEXJ4ZKCLIHF34ZWEIVV/bundle.json","state_url":"https://pith.science/pith/QEOPKJSEXJ4ZKCLIHF34ZWEIVV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QEOPKJSEXJ4ZKCLIHF34ZWEIVV/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":"2026-08-20T09:47:48Z","links":{"resolver":"https://pith.science/pith/QEOPKJSEXJ4ZKCLIHF34ZWEIVV","bundle":"https://pith.science/pith/QEOPKJSEXJ4ZKCLIHF34ZWEIVV/bundle.json","state":"https://pith.science/pith/QEOPKJSEXJ4ZKCLIHF34ZWEIVV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QEOPKJSEXJ4ZKCLIHF34ZWEIVV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:QEOPKJSEXJ4ZKCLIHF34ZWEIVV","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":"42d5c27edd65b5836e78b5506dbd286c6ef68067f7f1d1bd928ad97209f25aeb","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2022-02-09T22:22:46Z","title_canon_sha256":"da1363ab03d427c8d48fca1ee402f81837aa9c6605f4c9ed1cb1bff14455a18a"},"schema_version":"1.0","source":{"id":"2202.04750","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2202.04750","created_at":"2026-07-05T03:59:03Z"},{"alias_kind":"arxiv_version","alias_value":"2202.04750v1","created_at":"2026-07-05T03:59:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2202.04750","created_at":"2026-07-05T03:59:03Z"},{"alias_kind":"pith_short_12","alias_value":"QEOPKJSEXJ4Z","created_at":"2026-07-05T03:59:03Z"},{"alias_kind":"pith_short_16","alias_value":"QEOPKJSEXJ4ZKCLI","created_at":"2026-07-05T03:59:03Z"},{"alias_kind":"pith_short_8","alias_value":"QEOPKJSE","created_at":"2026-07-05T03:59:03Z"}],"graph_snapshots":[{"event_id":"sha256:1d1980be9bfe0c9fe16dc5359adf93964d868dcc191ca30ebc2d4518875c690f","target":"graph","created_at":"2026-07-05T03:59:03Z","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/2202.04750/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present an analysis of XMM-Newton observations of four stars in the young (670 Myr) open cluster Praesepe. The planets hosted by these stars all lie close in radius-period space to the radius-period valley and/or the Neptunian desert, two features that photoevaporation by X-ray and extreme ultraviolet (EUV) photons could be driving. Although the stars are no longer in the saturated regime, strong X-ray and extreme ultraviolet irradiation is still ongoing. Based on EUV time evolution slopes we derived in a previous paper, in all four cases, two-thirds of their EUV irradiation is still to com","authors_text":"George W. King, L\\'ia R. Corrales, Marcel A. Ag\\\"ueros, Nicola J. Miller, Peter J. Wheatley, Victoria A. Fawcett","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2022-02-09T22:22:46Z","title":"The strongly irradiated planets in Praesepe"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2202.04750","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:a0be480218ea351ec616459178807452041c8945a5ac3ff38c29e49449c60e52","target":"record","created_at":"2026-07-05T03:59:03Z","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":"42d5c27edd65b5836e78b5506dbd286c6ef68067f7f1d1bd928ad97209f25aeb","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2022-02-09T22:22:46Z","title_canon_sha256":"da1363ab03d427c8d48fca1ee402f81837aa9c6605f4c9ed1cb1bff14455a18a"},"schema_version":"1.0","source":{"id":"2202.04750","kind":"arxiv","version":1}},"canonical_sha256":"811cf52644ba799509683977ccd888ad6ece6d1bb3c35940fc706a5cad78d5da","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"811cf52644ba799509683977ccd888ad6ece6d1bb3c35940fc706a5cad78d5da","first_computed_at":"2026-07-05T03:59:03.333051Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:59:03.333051Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"r5Nvtvlas8AHSD4lbxnNkOmP/4Nsske43fY2hHjvVLrv+0Qv0GM+I+CFycNQJyenBTDdLAIWy0uvasnhVWNqBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T03:59:03.333473Z","signed_message":"canonical_sha256_bytes"},"source_id":"2202.04750","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a0be480218ea351ec616459178807452041c8945a5ac3ff38c29e49449c60e52","sha256:1d1980be9bfe0c9fe16dc5359adf93964d868dcc191ca30ebc2d4518875c690f"],"state_sha256":"0051c2c64dbd60f295b891f9ebc15b87251463b64cf7809e57950a2184626b60"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zWWBz9lyKNK6wQk4PXf1AsuFYyLHZi0NJkYZgvhZOa2Ds4xCP89V0/0EeOpSRstZuPslFdBbnfZsRI6lL6d+BA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-20T09:47:48.326669Z","bundle_sha256":"59160e5955faeb19b9b42c9d9d7003c3b63b166aaa5c398be758df4fb05b7e73"}}