{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:3FSLC235NVBKZJKULQGDZLX5Q3","short_pith_number":"pith:3FSLC235","canonical_record":{"source":{"id":"1004.1203","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-04-07T22:44:13Z","cross_cats_sorted":["astro-ph.EP"],"title_canon_sha256":"ccb02e83b6eab2354ed497ce8d2ec1856028b113f85116bbd22a3da82ef8d8fc","abstract_canon_sha256":"2126100191de61f32ae2c733a4f8e147aa23d0ab12e60bec5a7d008f994cb5ff"},"schema_version":"1.0"},"canonical_sha256":"d964b16b7d6d42aca5545c0c3caefd86e13c6d3882d7acf38ce8ed63aba48420","source":{"kind":"arxiv","id":"1004.1203","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1004.1203","created_at":"2026-05-18T02:08:08Z"},{"alias_kind":"arxiv_version","alias_value":"1004.1203v2","created_at":"2026-05-18T02:08:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1004.1203","created_at":"2026-05-18T02:08:08Z"},{"alias_kind":"pith_short_12","alias_value":"3FSLC235NVBK","created_at":"2026-05-18T12:26:03Z"},{"alias_kind":"pith_short_16","alias_value":"3FSLC235NVBKZJKU","created_at":"2026-05-18T12:26:03Z"},{"alias_kind":"pith_short_8","alias_value":"3FSLC235","created_at":"2026-05-18T12:26:03Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:3FSLC235NVBKZJKULQGDZLX5Q3","target":"record","payload":{"canonical_record":{"source":{"id":"1004.1203","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-04-07T22:44:13Z","cross_cats_sorted":["astro-ph.EP"],"title_canon_sha256":"ccb02e83b6eab2354ed497ce8d2ec1856028b113f85116bbd22a3da82ef8d8fc","abstract_canon_sha256":"2126100191de61f32ae2c733a4f8e147aa23d0ab12e60bec5a7d008f994cb5ff"},"schema_version":"1.0"},"canonical_sha256":"d964b16b7d6d42aca5545c0c3caefd86e13c6d3882d7acf38ce8ed63aba48420","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:08:08.176413Z","signature_b64":"Rjy8EwXvlQqPSILE1mC9e3jPqR+EGOq/a8Rvhys56QmkKUtKpel+7vI+r3Jn/74HtTFdeHeHsCEoXt1lpovvDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d964b16b7d6d42aca5545c0c3caefd86e13c6d3882d7acf38ce8ed63aba48420","last_reissued_at":"2026-05-18T02:08:08.175709Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:08:08.175709Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1004.1203","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":"2026-05-18T02:08:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NAQEzi4+IqOrzHSl8hOORQkn4/9CrI/y479rgSx2Xh9cMh+MQn2NcH38RZkJPobIppNwooISvJzhKimQBMt9Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-20T00:17:00.700026Z"},"content_sha256":"99aa81eaff26ea82617eb0ff83ebe739cf66710e16312f2853fe17a778bd8f84","schema_version":"1.0","event_id":"sha256:99aa81eaff26ea82617eb0ff83ebe739cf66710e16312f2853fe17a778bd8f84"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:3FSLC235NVBKZJKULQGDZLX5Q3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Theoretical spectra of photoevaporating protoplanetary discs: An atlas of atomic and low-ionisation emission lines","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.EP"],"primary_cat":"astro-ph.GA","authors_text":"Barbara Ercolano (IoA Cambridge, Exeter), James E. Owen (IoA Cambridge), UCL","submitted_at":"2010-04-07T22:44:13Z","abstract_excerpt":"We present a calculation of the atomic and low-ionisation emission line spectra of photoevaporating protoplanetary discs. Line luminosities and profiles are obtained from detailed photoionisation calculations of the disc and wind structures surrounding young active solar-type stars. The disc and wind density and velocity fields were obtained from the recently developed radiation-hydrodynamic models of Owen et al., that include stellar X-ray and EUV irradiation of protoplanetary discs at various stages of clearing, from primordial sources to inner hole sources of various hole sizes.\n Our models"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1004.1203","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":""},"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":"2026-05-18T02:08:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rnki3cAHr6nTDm6LyuYSbPVUjah2srpGBAneVOmf498j/m1lB9ZyX9P5Qv0E4WK2nyaQb0qfaHoShaytxFwFBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-20T00:17:00.700388Z"},"content_sha256":"6caec6b36e8b909d4a499a5c7249cce819b7dcd1c9618552e36053734506dd66","schema_version":"1.0","event_id":"sha256:6caec6b36e8b909d4a499a5c7249cce819b7dcd1c9618552e36053734506dd66"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3FSLC235NVBKZJKULQGDZLX5Q3/bundle.json","state_url":"https://pith.science/pith/3FSLC235NVBKZJKULQGDZLX5Q3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3FSLC235NVBKZJKULQGDZLX5Q3/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":"2026-06-20T00:17:00Z","links":{"resolver":"https://pith.science/pith/3FSLC235NVBKZJKULQGDZLX5Q3","bundle":"https://pith.science/pith/3FSLC235NVBKZJKULQGDZLX5Q3/bundle.json","state":"https://pith.science/pith/3FSLC235NVBKZJKULQGDZLX5Q3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3FSLC235NVBKZJKULQGDZLX5Q3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:3FSLC235NVBKZJKULQGDZLX5Q3","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":"2126100191de61f32ae2c733a4f8e147aa23d0ab12e60bec5a7d008f994cb5ff","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-04-07T22:44:13Z","title_canon_sha256":"ccb02e83b6eab2354ed497ce8d2ec1856028b113f85116bbd22a3da82ef8d8fc"},"schema_version":"1.0","source":{"id":"1004.1203","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1004.1203","created_at":"2026-05-18T02:08:08Z"},{"alias_kind":"arxiv_version","alias_value":"1004.1203v2","created_at":"2026-05-18T02:08:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1004.1203","created_at":"2026-05-18T02:08:08Z"},{"alias_kind":"pith_short_12","alias_value":"3FSLC235NVBK","created_at":"2026-05-18T12:26:03Z"},{"alias_kind":"pith_short_16","alias_value":"3FSLC235NVBKZJKU","created_at":"2026-05-18T12:26:03Z"},{"alias_kind":"pith_short_8","alias_value":"3FSLC235","created_at":"2026-05-18T12:26:03Z"}],"graph_snapshots":[{"event_id":"sha256:6caec6b36e8b909d4a499a5c7249cce819b7dcd1c9618552e36053734506dd66","target":"graph","created_at":"2026-05-18T02:08:08Z","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":"We present a calculation of the atomic and low-ionisation emission line spectra of photoevaporating protoplanetary discs. Line luminosities and profiles are obtained from detailed photoionisation calculations of the disc and wind structures surrounding young active solar-type stars. The disc and wind density and velocity fields were obtained from the recently developed radiation-hydrodynamic models of Owen et al., that include stellar X-ray and EUV irradiation of protoplanetary discs at various stages of clearing, from primordial sources to inner hole sources of various hole sizes.\n Our models","authors_text":"Barbara Ercolano (IoA Cambridge, Exeter), James E. Owen (IoA Cambridge), UCL","cross_cats":["astro-ph.EP"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-04-07T22:44:13Z","title":"Theoretical spectra of photoevaporating protoplanetary discs: An atlas of atomic and low-ionisation emission lines"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1004.1203","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":"sha256:99aa81eaff26ea82617eb0ff83ebe739cf66710e16312f2853fe17a778bd8f84","target":"record","created_at":"2026-05-18T02:08:08Z","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":"2126100191de61f32ae2c733a4f8e147aa23d0ab12e60bec5a7d008f994cb5ff","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-04-07T22:44:13Z","title_canon_sha256":"ccb02e83b6eab2354ed497ce8d2ec1856028b113f85116bbd22a3da82ef8d8fc"},"schema_version":"1.0","source":{"id":"1004.1203","kind":"arxiv","version":2}},"canonical_sha256":"d964b16b7d6d42aca5545c0c3caefd86e13c6d3882d7acf38ce8ed63aba48420","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d964b16b7d6d42aca5545c0c3caefd86e13c6d3882d7acf38ce8ed63aba48420","first_computed_at":"2026-05-18T02:08:08.175709Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:08:08.175709Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Rjy8EwXvlQqPSILE1mC9e3jPqR+EGOq/a8Rvhys56QmkKUtKpel+7vI+r3Jn/74HtTFdeHeHsCEoXt1lpovvDw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:08:08.176413Z","signed_message":"canonical_sha256_bytes"},"source_id":"1004.1203","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:99aa81eaff26ea82617eb0ff83ebe739cf66710e16312f2853fe17a778bd8f84","sha256:6caec6b36e8b909d4a499a5c7249cce819b7dcd1c9618552e36053734506dd66"],"state_sha256":"5428bc0e1890deb9e91c2c18650870b02df9b53bcd015ffd0dcabe3e56f5f31a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pvjnHqV3apUh5DytDzYJ6dKcEfi8qaMiHkMQ+licps0qQuwAv6cryjNjVbkqfqUp8Adq+9wEVDtDLzGeP0HTDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-20T00:17:00.702306Z","bundle_sha256":"b8bc3eef6a2039ab3224d4b6e21d4d12a68e4b245d9aa2d510603b0629c6497b"}}