{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:HKG53UQIHFYCH3UILYC4G2R2VB","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":"0906e624cde95248c3f0d5ceb1b31e491c59144f1cd9848d7c958a9f8beeb97a","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-02-19T18:43:14Z","title_canon_sha256":"5c10f1add9cd8586ff46906f65eaa0935acf5153eb6ee7c73f0ef9f20755216b"},"schema_version":"1.0","source":{"id":"1902.07191","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.07191","created_at":"2026-05-17T23:41:12Z"},{"alias_kind":"arxiv_version","alias_value":"1902.07191v4","created_at":"2026-05-17T23:41:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.07191","created_at":"2026-05-17T23:41:12Z"},{"alias_kind":"pith_short_12","alias_value":"HKG53UQIHFYC","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_16","alias_value":"HKG53UQIHFYCH3UI","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_8","alias_value":"HKG53UQI","created_at":"2026-05-18T12:33:18Z"}],"graph_snapshots":[{"event_id":"sha256:450774c1f829897ce4029920870c2b3293975a5036d8fe87ae6edb5dcbfed258","target":"graph","created_at":"2026-05-17T23:41:12Z","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":"The wide, deep cavities of transition disks are often believed to have been hollowed out by nascent planetary systems. PDS 70, a ${\\sim}5$ Myr old transition disk system in which a multi-Jupiter-mass planet candidate at 22 au coexists with a ${\\sim}30$ au gas and ${\\sim}60$ au dust-continuum gap, provides a valuable case study for this hypothesis. Using the PEnGUIn hydrodynamics code, we simulate the orbital evolution and accretion of PDS 70b in its natal disk over the lifetime of the system. When the accreting planet reaches about 2.5 Jupiter masses, it spontaneously grows in eccentricity and","authors_text":"Dhruv Muley, Jeffrey Fung, Nienke van der Marel","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-02-19T18:43:14Z","title":"PDS 70: A transition disk sculpted by a single planet"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.07191","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":"sha256:34f702459c5b6271a888da8bc9471a529664333deeeaa33a8d741fefca1caee9","target":"record","created_at":"2026-05-17T23:41:12Z","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":"0906e624cde95248c3f0d5ceb1b31e491c59144f1cd9848d7c958a9f8beeb97a","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-02-19T18:43:14Z","title_canon_sha256":"5c10f1add9cd8586ff46906f65eaa0935acf5153eb6ee7c73f0ef9f20755216b"},"schema_version":"1.0","source":{"id":"1902.07191","kind":"arxiv","version":4}},"canonical_sha256":"3a8dddd208397023ee885e05c36a3aa860fe774d3bd92bd373067a346a0da75a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3a8dddd208397023ee885e05c36a3aa860fe774d3bd92bd373067a346a0da75a","first_computed_at":"2026-05-17T23:41:12.032385Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:41:12.032385Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"P6Ip6JB+yGi5htQxSNwz/Q5B1GseXncrB1TsokMyVqaWJGlcpk5bjuTAxmGl+3sCRbO7Lz8pMxreIt/7mDPWDg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:41:12.033065Z","signed_message":"canonical_sha256_bytes"},"source_id":"1902.07191","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:34f702459c5b6271a888da8bc9471a529664333deeeaa33a8d741fefca1caee9","sha256:450774c1f829897ce4029920870c2b3293975a5036d8fe87ae6edb5dcbfed258"],"state_sha256":"4b88dde73d0105d0b0c270cd3f731d572cd84337c37cc392fd322e743b36bb77"}