{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:WSIQFSI3LVNJQO2V5VGCWKEIQ7","short_pith_number":"pith:WSIQFSI3","canonical_record":{"source":{"id":"1009.3018","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-09-15T20:00:06Z","cross_cats_sorted":[],"title_canon_sha256":"7f441fdeaf8ae9780a401a3b1bab260ad5efe15507fa5bee2bf18759f2e9cf4c","abstract_canon_sha256":"e56282f51b67f9d650016d72b1e22fb99c3df9ecbbca568f7169d8fdf0490654"},"schema_version":"1.0"},"canonical_sha256":"b49102c91b5d5a983b55ed4c2b288887f9696398d2c52cb8af39b99d783f51cd","source":{"kind":"arxiv","id":"1009.3018","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1009.3018","created_at":"2026-05-18T02:05:28Z"},{"alias_kind":"arxiv_version","alias_value":"1009.3018v2","created_at":"2026-05-18T02:05:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1009.3018","created_at":"2026-05-18T02:05:28Z"},{"alias_kind":"pith_short_12","alias_value":"WSIQFSI3LVNJ","created_at":"2026-05-18T12:26:17Z"},{"alias_kind":"pith_short_16","alias_value":"WSIQFSI3LVNJQO2V","created_at":"2026-05-18T12:26:17Z"},{"alias_kind":"pith_short_8","alias_value":"WSIQFSI3","created_at":"2026-05-18T12:26:17Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:WSIQFSI3LVNJQO2V5VGCWKEIQ7","target":"record","payload":{"canonical_record":{"source":{"id":"1009.3018","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-09-15T20:00:06Z","cross_cats_sorted":[],"title_canon_sha256":"7f441fdeaf8ae9780a401a3b1bab260ad5efe15507fa5bee2bf18759f2e9cf4c","abstract_canon_sha256":"e56282f51b67f9d650016d72b1e22fb99c3df9ecbbca568f7169d8fdf0490654"},"schema_version":"1.0"},"canonical_sha256":"b49102c91b5d5a983b55ed4c2b288887f9696398d2c52cb8af39b99d783f51cd","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:05:28.800140Z","signature_b64":"KI/n8MWZgDvFCp+glsFDbQEnoT962ech01jxUj6fFHOvyvGN+x9mSjKZXf5qmorlAFkBQK1v5sMBTdplBoiQAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b49102c91b5d5a983b55ed4c2b288887f9696398d2c52cb8af39b99d783f51cd","last_reissued_at":"2026-05-18T02:05:28.798885Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:05:28.798885Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1009.3018","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":"2026-05-18T02:05:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EmY1e3Oi3MZZqLQnAgCVAHW3f2071gp76/klIjbwChI1sDVyMGYLv5fe3OFh1rriK8ODV0+hs/TfJNJv0p5MCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T06:55:32.940628Z"},"content_sha256":"abefc7163bddd449f4b900e385fdc5de4c7f54b019044d5e4c1d23e616a3c0aa","schema_version":"1.0","event_id":"sha256:abefc7163bddd449f4b900e385fdc5de4c7f54b019044d5e4c1d23e616a3c0aa"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:WSIQFSI3LVNJQO2V5VGCWKEIQ7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"An in-depth study of grid-based asteroseismic analysis","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Ning Gai, Sarbani Basu, William J. Chaplin, Yvonne Elsworth","submitted_at":"2010-09-15T20:00:06Z","abstract_excerpt":"NASA's Kepler mission is providing basic asteroseismic data for hundreds of stars. One of the more common ways of determining stellar characteristics from these data is by so-called \"grid based\" modelling. We have made a detailed study of grid-based analysis techniques to study the errors (and error-correlations) involved. As had been reported earlier, we find that it is relatively easy to get very precise values of stellar radii using grid-based techniques. However, we find that there are small, but significant, biases that can result because of the grid of models used. The biases can be mini"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1009.3018","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":"2026-05-18T02:05:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JwWqwpp8bxNtru/IdZx6rCap9cCvDJXlJaYw0Gz8B3WVKTo+ySVGmOXfXhyYpD8VQeJJNRX0gK058YMZoJ9tAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T06:55:32.940976Z"},"content_sha256":"87c3e462b167e94c43698a8022e5a4dcd901022ce8cade1fa1bb71058b653b2e","schema_version":"1.0","event_id":"sha256:87c3e462b167e94c43698a8022e5a4dcd901022ce8cade1fa1bb71058b653b2e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WSIQFSI3LVNJQO2V5VGCWKEIQ7/bundle.json","state_url":"https://pith.science/pith/WSIQFSI3LVNJQO2V5VGCWKEIQ7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WSIQFSI3LVNJQO2V5VGCWKEIQ7/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":"2026-05-30T06:55:32Z","links":{"resolver":"https://pith.science/pith/WSIQFSI3LVNJQO2V5VGCWKEIQ7","bundle":"https://pith.science/pith/WSIQFSI3LVNJQO2V5VGCWKEIQ7/bundle.json","state":"https://pith.science/pith/WSIQFSI3LVNJQO2V5VGCWKEIQ7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WSIQFSI3LVNJQO2V5VGCWKEIQ7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:WSIQFSI3LVNJQO2V5VGCWKEIQ7","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":"e56282f51b67f9d650016d72b1e22fb99c3df9ecbbca568f7169d8fdf0490654","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-09-15T20:00:06Z","title_canon_sha256":"7f441fdeaf8ae9780a401a3b1bab260ad5efe15507fa5bee2bf18759f2e9cf4c"},"schema_version":"1.0","source":{"id":"1009.3018","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1009.3018","created_at":"2026-05-18T02:05:28Z"},{"alias_kind":"arxiv_version","alias_value":"1009.3018v2","created_at":"2026-05-18T02:05:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1009.3018","created_at":"2026-05-18T02:05:28Z"},{"alias_kind":"pith_short_12","alias_value":"WSIQFSI3LVNJ","created_at":"2026-05-18T12:26:17Z"},{"alias_kind":"pith_short_16","alias_value":"WSIQFSI3LVNJQO2V","created_at":"2026-05-18T12:26:17Z"},{"alias_kind":"pith_short_8","alias_value":"WSIQFSI3","created_at":"2026-05-18T12:26:17Z"}],"graph_snapshots":[{"event_id":"sha256:87c3e462b167e94c43698a8022e5a4dcd901022ce8cade1fa1bb71058b653b2e","target":"graph","created_at":"2026-05-18T02:05:28Z","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":"NASA's Kepler mission is providing basic asteroseismic data for hundreds of stars. One of the more common ways of determining stellar characteristics from these data is by so-called \"grid based\" modelling. We have made a detailed study of grid-based analysis techniques to study the errors (and error-correlations) involved. As had been reported earlier, we find that it is relatively easy to get very precise values of stellar radii using grid-based techniques. However, we find that there are small, but significant, biases that can result because of the grid of models used. The biases can be mini","authors_text":"Ning Gai, Sarbani Basu, William J. Chaplin, Yvonne Elsworth","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-09-15T20:00:06Z","title":"An in-depth study of grid-based asteroseismic analysis"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1009.3018","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:abefc7163bddd449f4b900e385fdc5de4c7f54b019044d5e4c1d23e616a3c0aa","target":"record","created_at":"2026-05-18T02:05:28Z","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":"e56282f51b67f9d650016d72b1e22fb99c3df9ecbbca568f7169d8fdf0490654","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2010-09-15T20:00:06Z","title_canon_sha256":"7f441fdeaf8ae9780a401a3b1bab260ad5efe15507fa5bee2bf18759f2e9cf4c"},"schema_version":"1.0","source":{"id":"1009.3018","kind":"arxiv","version":2}},"canonical_sha256":"b49102c91b5d5a983b55ed4c2b288887f9696398d2c52cb8af39b99d783f51cd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b49102c91b5d5a983b55ed4c2b288887f9696398d2c52cb8af39b99d783f51cd","first_computed_at":"2026-05-18T02:05:28.798885Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:05:28.798885Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"KI/n8MWZgDvFCp+glsFDbQEnoT962ech01jxUj6fFHOvyvGN+x9mSjKZXf5qmorlAFkBQK1v5sMBTdplBoiQAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:05:28.800140Z","signed_message":"canonical_sha256_bytes"},"source_id":"1009.3018","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:abefc7163bddd449f4b900e385fdc5de4c7f54b019044d5e4c1d23e616a3c0aa","sha256:87c3e462b167e94c43698a8022e5a4dcd901022ce8cade1fa1bb71058b653b2e"],"state_sha256":"e30bd9b7a709998c5a4d5c89a81c37a534e1ec937008d0f2a0a8618d16c8922a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dOAPf4EdX1v4ifqZvZOHd4sOLVZRN+XTuN6gXJoGzwqO822I/kuTINzbERkM1rX/EL7lYv5Fno5HIs5AQ0IiCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T06:55:32.943496Z","bundle_sha256":"7dd126dd8cdc7b4a9f740f13a44016a7fb0db2e55cc6a3fca45cee5d3a6bab6e"}}