{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:W4DDK3ANWPWAPR4XYUOP5WY25R","short_pith_number":"pith:W4DDK3AN","canonical_record":{"source":{"id":"1109.3432","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2011-09-15T19:09:44Z","cross_cats_sorted":[],"title_canon_sha256":"fa285aaeffabd3eb373224b6a857e3c9f76019745730e5f370dea2e10dd03efc","abstract_canon_sha256":"c7449d7dd5691c2c24832dcea184f37d3e363a694ac20197e096f1468651452d"},"schema_version":"1.0"},"canonical_sha256":"b706356c0db3ec07c797c51cfedb1aec56ace247eba156840c56fbba31120299","source":{"kind":"arxiv","id":"1109.3432","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1109.3432","created_at":"2026-05-18T02:00:32Z"},{"alias_kind":"arxiv_version","alias_value":"1109.3432v1","created_at":"2026-05-18T02:00:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1109.3432","created_at":"2026-05-18T02:00:32Z"},{"alias_kind":"pith_short_12","alias_value":"W4DDK3ANWPWA","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_16","alias_value":"W4DDK3ANWPWAPR4X","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_8","alias_value":"W4DDK3AN","created_at":"2026-05-18T12:26:44Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:W4DDK3ANWPWAPR4XYUOP5WY25R","target":"record","payload":{"canonical_record":{"source":{"id":"1109.3432","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2011-09-15T19:09:44Z","cross_cats_sorted":[],"title_canon_sha256":"fa285aaeffabd3eb373224b6a857e3c9f76019745730e5f370dea2e10dd03efc","abstract_canon_sha256":"c7449d7dd5691c2c24832dcea184f37d3e363a694ac20197e096f1468651452d"},"schema_version":"1.0"},"canonical_sha256":"b706356c0db3ec07c797c51cfedb1aec56ace247eba156840c56fbba31120299","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:00:32.333780Z","signature_b64":"J44hAjjhM4UQUCaz6mEOiaGfSPVwJdYQLaMYkUx7L66TYwa91x6DvCaW62g9Tx1j0GXBthmO4kK6FqiSagFGBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b706356c0db3ec07c797c51cfedb1aec56ace247eba156840c56fbba31120299","last_reissued_at":"2026-05-18T02:00:32.333133Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:00:32.333133Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1109.3432","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":"2026-05-18T02:00:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1fGkLwJaIBBKy2oaq4oEbvI3WMnLPdjoF43D048YwxUxIS5GJ17VEmmkOFx62gY3ym3SYWMIHEwAUysiYO41AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T20:40:33.845796Z"},"content_sha256":"219bb89c5db4f373b8b377f30f164bcee7a35d4d6e36fe94243f5feca08981c4","schema_version":"1.0","event_id":"sha256:219bb89c5db4f373b8b377f30f164bcee7a35d4d6e36fe94243f5feca08981c4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:W4DDK3ANWPWAPR4XYUOP5WY25R","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Kepler-16: A Transiting Circumbinary Planet","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Alan Boss, Andrej Prsa, Avi Shporer, Christopher K. Middour, Daniel C. Fabrycky, Darin Ragozzine, David Koch, David Latham, Debra Fischer, Derek Buzasi, Dimitar Sasselov, Donald R. Short, Douglas A. Caldwell, Edward W. Dunham, Elisa V. Quintana, Eric B. Ford, Gabor Furesz, Geoffrey W. Marcy, Gilbert A. Esquerdo, Guillermo Torres, Jack J. Lissauer, Jason H. Steffen, Jennifer R. Hall, Jerome A. Orosz, John C. Geary, Jonathan J. Fortney, Jon M. Jenkins, Joshua A. Carter, Joshua N. Winn, Lars A. Buchhave, Laurance R. Doyle, Martin Still, Matthew J. Holman, Michael L. Calkins, Michael N. Fanelli, Michael R. Haas, Michael Rucker, Natalie Batalha, Perry Berlind, Robert P. Stefanik, Robert W. Slawson, Samuel N. Quinn, Sean McCauliff, Steve B. Howell, Sumin Tang, Warren R. Brown, William D. Cochran, William F. Welsh, William J. Borucki","submitted_at":"2011-09-15T19:09:44Z","abstract_excerpt":"We report the detection of a planet whose orbit surrounds a pair of low-mass stars. Data from the Kepler spacecraft reveal transits of the planet across both stars, in addition to the mutual eclipses of the stars, giving precise constraints on the absolute dimensions of all three bodies. The planet is comparable to Saturn in mass and size, and is on a nearly circular 229-day orbit around its two parent stars. The eclipsing stars are 20% and 69% as massive as the sun, and have an eccentric 41-day orbit. The motions of all three bodies are confined to within 0.5 degree of a single plane, suggest"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1109.3432","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":""},"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":"2026-05-18T02:00:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rDkB2nYuls2XaJu3EhnRkK2/qoP3Y11y9ofWBTMxFGIXoqy39dfN43rB2EXkUQavRvzaTwoHDl18s5TmqZsjAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T20:40:33.846496Z"},"content_sha256":"0d4191ffc1c59b959c4ab2ef1bfae8ced3916ae338514220803e665ec93266c7","schema_version":"1.0","event_id":"sha256:0d4191ffc1c59b959c4ab2ef1bfae8ced3916ae338514220803e665ec93266c7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/W4DDK3ANWPWAPR4XYUOP5WY25R/bundle.json","state_url":"https://pith.science/pith/W4DDK3ANWPWAPR4XYUOP5WY25R/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/W4DDK3ANWPWAPR4XYUOP5WY25R/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":"2026-05-25T20:40:33Z","links":{"resolver":"https://pith.science/pith/W4DDK3ANWPWAPR4XYUOP5WY25R","bundle":"https://pith.science/pith/W4DDK3ANWPWAPR4XYUOP5WY25R/bundle.json","state":"https://pith.science/pith/W4DDK3ANWPWAPR4XYUOP5WY25R/state.json","well_known_bundle":"https://pith.science/.well-known/pith/W4DDK3ANWPWAPR4XYUOP5WY25R/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:W4DDK3ANWPWAPR4XYUOP5WY25R","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":"c7449d7dd5691c2c24832dcea184f37d3e363a694ac20197e096f1468651452d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2011-09-15T19:09:44Z","title_canon_sha256":"fa285aaeffabd3eb373224b6a857e3c9f76019745730e5f370dea2e10dd03efc"},"schema_version":"1.0","source":{"id":"1109.3432","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1109.3432","created_at":"2026-05-18T02:00:32Z"},{"alias_kind":"arxiv_version","alias_value":"1109.3432v1","created_at":"2026-05-18T02:00:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1109.3432","created_at":"2026-05-18T02:00:32Z"},{"alias_kind":"pith_short_12","alias_value":"W4DDK3ANWPWA","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_16","alias_value":"W4DDK3ANWPWAPR4X","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_8","alias_value":"W4DDK3AN","created_at":"2026-05-18T12:26:44Z"}],"graph_snapshots":[{"event_id":"sha256:0d4191ffc1c59b959c4ab2ef1bfae8ced3916ae338514220803e665ec93266c7","target":"graph","created_at":"2026-05-18T02:00:32Z","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 report the detection of a planet whose orbit surrounds a pair of low-mass stars. Data from the Kepler spacecraft reveal transits of the planet across both stars, in addition to the mutual eclipses of the stars, giving precise constraints on the absolute dimensions of all three bodies. The planet is comparable to Saturn in mass and size, and is on a nearly circular 229-day orbit around its two parent stars. The eclipsing stars are 20% and 69% as massive as the sun, and have an eccentric 41-day orbit. The motions of all three bodies are confined to within 0.5 degree of a single plane, suggest","authors_text":"Alan Boss, Andrej Prsa, Avi Shporer, Christopher K. Middour, Daniel C. Fabrycky, Darin Ragozzine, David Koch, David Latham, Debra Fischer, Derek Buzasi, Dimitar Sasselov, Donald R. Short, Douglas A. Caldwell, Edward W. Dunham, Elisa V. Quintana, Eric B. Ford, Gabor Furesz, Geoffrey W. Marcy, Gilbert A. Esquerdo, Guillermo Torres, Jack J. Lissauer, Jason H. Steffen, Jennifer R. Hall, Jerome A. Orosz, John C. Geary, Jonathan J. Fortney, Jon M. Jenkins, Joshua A. Carter, Joshua N. Winn, Lars A. Buchhave, Laurance R. Doyle, Martin Still, Matthew J. Holman, Michael L. Calkins, Michael N. Fanelli, Michael R. Haas, Michael Rucker, Natalie Batalha, Perry Berlind, Robert P. Stefanik, Robert W. Slawson, Samuel N. Quinn, Sean McCauliff, Steve B. Howell, Sumin Tang, Warren R. Brown, William D. Cochran, William F. Welsh, William J. Borucki","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2011-09-15T19:09:44Z","title":"Kepler-16: A Transiting Circumbinary Planet"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1109.3432","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":"sha256:219bb89c5db4f373b8b377f30f164bcee7a35d4d6e36fe94243f5feca08981c4","target":"record","created_at":"2026-05-18T02:00:32Z","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":"c7449d7dd5691c2c24832dcea184f37d3e363a694ac20197e096f1468651452d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2011-09-15T19:09:44Z","title_canon_sha256":"fa285aaeffabd3eb373224b6a857e3c9f76019745730e5f370dea2e10dd03efc"},"schema_version":"1.0","source":{"id":"1109.3432","kind":"arxiv","version":1}},"canonical_sha256":"b706356c0db3ec07c797c51cfedb1aec56ace247eba156840c56fbba31120299","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b706356c0db3ec07c797c51cfedb1aec56ace247eba156840c56fbba31120299","first_computed_at":"2026-05-18T02:00:32.333133Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:00:32.333133Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"J44hAjjhM4UQUCaz6mEOiaGfSPVwJdYQLaMYkUx7L66TYwa91x6DvCaW62g9Tx1j0GXBthmO4kK6FqiSagFGBw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:00:32.333780Z","signed_message":"canonical_sha256_bytes"},"source_id":"1109.3432","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:219bb89c5db4f373b8b377f30f164bcee7a35d4d6e36fe94243f5feca08981c4","sha256:0d4191ffc1c59b959c4ab2ef1bfae8ced3916ae338514220803e665ec93266c7"],"state_sha256":"b2876719b5d8659d13b4c37c4498067e87564e64020ccbed20c86dfeae33b491"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4nvSY+mYKysgRJkgaSnjsgjc1bO2ZBWqWDzc8ArBEOiTRmsAk1Ntl86fYnKCejBsKG4qZf4yyM3LBdCAtcYLAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T20:40:33.850214Z","bundle_sha256":"306f818006563a449bdb8581989426a5d16aad9b16655ee9598b1092cf6a4416"}}