{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:3E2MAQIVWOXEO54QDBYGS6U3PB","short_pith_number":"pith:3E2MAQIV","canonical_record":{"source":{"id":"1611.00397","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2016-11-01T21:20:16Z","cross_cats_sorted":[],"title_canon_sha256":"cd2687bd0e33ca5882e0b5d3589b9faae4f6a9ab416674e864e82a2c1e547711","abstract_canon_sha256":"c2df76206f2ef992acf1b28b48827aee1e4151b93500f58fe94612953fb51e90"},"schema_version":"1.0"},"canonical_sha256":"d934c04115b3ae4777901870697a9b78767c43c965461f28288db0f58e8cd38e","source":{"kind":"arxiv","id":"1611.00397","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1611.00397","created_at":"2026-05-18T00:51:42Z"},{"alias_kind":"arxiv_version","alias_value":"1611.00397v2","created_at":"2026-05-18T00:51:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1611.00397","created_at":"2026-05-18T00:51:42Z"},{"alias_kind":"pith_short_12","alias_value":"3E2MAQIVWOXE","created_at":"2026-05-18T12:29:55Z"},{"alias_kind":"pith_short_16","alias_value":"3E2MAQIVWOXEO54Q","created_at":"2026-05-18T12:29:55Z"},{"alias_kind":"pith_short_8","alias_value":"3E2MAQIV","created_at":"2026-05-18T12:29:55Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:3E2MAQIVWOXEO54QDBYGS6U3PB","target":"record","payload":{"canonical_record":{"source":{"id":"1611.00397","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2016-11-01T21:20:16Z","cross_cats_sorted":[],"title_canon_sha256":"cd2687bd0e33ca5882e0b5d3589b9faae4f6a9ab416674e864e82a2c1e547711","abstract_canon_sha256":"c2df76206f2ef992acf1b28b48827aee1e4151b93500f58fe94612953fb51e90"},"schema_version":"1.0"},"canonical_sha256":"d934c04115b3ae4777901870697a9b78767c43c965461f28288db0f58e8cd38e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:51:42.722943Z","signature_b64":"A0E+lxjhW9qMzCwHHnIJnwPbkCL/E+Gufw4vPhFc+tdxjUH348w9pDJ6STbIFrS9NVrSWLC5ZJrLTuv8UQKTDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d934c04115b3ae4777901870697a9b78767c43c965461f28288db0f58e8cd38e","last_reissued_at":"2026-05-18T00:51:42.722283Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:51:42.722283Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1611.00397","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":"2026-05-18T00:51:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QfYI69FKXHAKh5Wd6TXIfGfK9EvZW0V9kZtgMS8ePxCnoENy8cBRufepVOG6Ai9bn4RdLYeAbfh+oZA+BKxeAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T17:41:02.994041Z"},"content_sha256":"8598e1d80a7a9387bb618902b80e281b3037cc790b2d871cd4e5196d930eea1c","schema_version":"1.0","event_id":"sha256:8598e1d80a7a9387bb618902b80e281b3037cc790b2d871cd4e5196d930eea1c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:3E2MAQIVWOXEO54QDBYGS6U3PB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Ultra Short Period Planets in K2 with companions: a double transiting system for EPIC 220674823","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Brian Jackson, Carl Ziegler, Christoph Baranec, Dmitry A. Duev, Elisabeth R. Adams, Ma\\\"issa Salama, Michael Endl, Nicholas M. Law, Phillip J. MacQueen, Rebecca Jensen-Clem, Reed Riddle, Shrinivas Kulkarni, William D. Cochran","submitted_at":"2016-11-01T21:20:16Z","abstract_excerpt":"Two transiting planets have been identified orbiting K2 target EPIC 220674823. One object is an ultra-short-period planet (USP) with a period of just 0.57 days (13.7 hours), while the other has a period of 13.3 days. Both planets are small, with the former having a radius of R_p1=1.5 R_E and the latter R_p2=2.5 R_E. Follow-up observations, including radial velocity (with uncertainties of 110 m/s) and high-resolution adaptive optics imagery, show no signs of stellar companions. EPIC 220674823 is the 12th confirmed or validated planetary system in which an ultra-short-period planet (i.e., having"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1611.00397","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":"2026-05-18T00:51:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tC2KH+rnWZAhHL80qAde1qeTitMweToArSbIQ9zEcxWYw5mAQrsoEHwdZQ+Ia4pGhKGoIvkEmAUkqIO66JB5AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T17:41:02.994735Z"},"content_sha256":"636608e5eddddb2e432385ee06070732616c49b3e521c9c0da9a8939ad83f3d9","schema_version":"1.0","event_id":"sha256:636608e5eddddb2e432385ee06070732616c49b3e521c9c0da9a8939ad83f3d9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3E2MAQIVWOXEO54QDBYGS6U3PB/bundle.json","state_url":"https://pith.science/pith/3E2MAQIVWOXEO54QDBYGS6U3PB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3E2MAQIVWOXEO54QDBYGS6U3PB/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":"2026-05-26T17:41:02Z","links":{"resolver":"https://pith.science/pith/3E2MAQIVWOXEO54QDBYGS6U3PB","bundle":"https://pith.science/pith/3E2MAQIVWOXEO54QDBYGS6U3PB/bundle.json","state":"https://pith.science/pith/3E2MAQIVWOXEO54QDBYGS6U3PB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3E2MAQIVWOXEO54QDBYGS6U3PB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:3E2MAQIVWOXEO54QDBYGS6U3PB","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":"c2df76206f2ef992acf1b28b48827aee1e4151b93500f58fe94612953fb51e90","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2016-11-01T21:20:16Z","title_canon_sha256":"cd2687bd0e33ca5882e0b5d3589b9faae4f6a9ab416674e864e82a2c1e547711"},"schema_version":"1.0","source":{"id":"1611.00397","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1611.00397","created_at":"2026-05-18T00:51:42Z"},{"alias_kind":"arxiv_version","alias_value":"1611.00397v2","created_at":"2026-05-18T00:51:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1611.00397","created_at":"2026-05-18T00:51:42Z"},{"alias_kind":"pith_short_12","alias_value":"3E2MAQIVWOXE","created_at":"2026-05-18T12:29:55Z"},{"alias_kind":"pith_short_16","alias_value":"3E2MAQIVWOXEO54Q","created_at":"2026-05-18T12:29:55Z"},{"alias_kind":"pith_short_8","alias_value":"3E2MAQIV","created_at":"2026-05-18T12:29:55Z"}],"graph_snapshots":[{"event_id":"sha256:636608e5eddddb2e432385ee06070732616c49b3e521c9c0da9a8939ad83f3d9","target":"graph","created_at":"2026-05-18T00:51:42Z","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":"Two transiting planets have been identified orbiting K2 target EPIC 220674823. One object is an ultra-short-period planet (USP) with a period of just 0.57 days (13.7 hours), while the other has a period of 13.3 days. Both planets are small, with the former having a radius of R_p1=1.5 R_E and the latter R_p2=2.5 R_E. Follow-up observations, including radial velocity (with uncertainties of 110 m/s) and high-resolution adaptive optics imagery, show no signs of stellar companions. EPIC 220674823 is the 12th confirmed or validated planetary system in which an ultra-short-period planet (i.e., having","authors_text":"Brian Jackson, Carl Ziegler, Christoph Baranec, Dmitry A. Duev, Elisabeth R. Adams, Ma\\\"issa Salama, Michael Endl, Nicholas M. Law, Phillip J. MacQueen, Rebecca Jensen-Clem, Reed Riddle, Shrinivas Kulkarni, William D. Cochran","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2016-11-01T21:20:16Z","title":"Ultra Short Period Planets in K2 with companions: a double transiting system for EPIC 220674823"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1611.00397","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":"sha256:8598e1d80a7a9387bb618902b80e281b3037cc790b2d871cd4e5196d930eea1c","target":"record","created_at":"2026-05-18T00:51:42Z","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":"c2df76206f2ef992acf1b28b48827aee1e4151b93500f58fe94612953fb51e90","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2016-11-01T21:20:16Z","title_canon_sha256":"cd2687bd0e33ca5882e0b5d3589b9faae4f6a9ab416674e864e82a2c1e547711"},"schema_version":"1.0","source":{"id":"1611.00397","kind":"arxiv","version":2}},"canonical_sha256":"d934c04115b3ae4777901870697a9b78767c43c965461f28288db0f58e8cd38e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d934c04115b3ae4777901870697a9b78767c43c965461f28288db0f58e8cd38e","first_computed_at":"2026-05-18T00:51:42.722283Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:51:42.722283Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"A0E+lxjhW9qMzCwHHnIJnwPbkCL/E+Gufw4vPhFc+tdxjUH348w9pDJ6STbIFrS9NVrSWLC5ZJrLTuv8UQKTDA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:51:42.722943Z","signed_message":"canonical_sha256_bytes"},"source_id":"1611.00397","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8598e1d80a7a9387bb618902b80e281b3037cc790b2d871cd4e5196d930eea1c","sha256:636608e5eddddb2e432385ee06070732616c49b3e521c9c0da9a8939ad83f3d9"],"state_sha256":"58aba8700da89b077f653b1c3e7d31b9492d7e6c7bdbf9a213ca15b71615fa24"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"M9eK0q8K308m9oo5r490Bjo9/5PH6Et8cWJswOSSGz5BPY227TnDng6T4L2gX66N0/ohzDjkc5oYfOnQV5adDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T17:41:02.998423Z","bundle_sha256":"47545b86c074873a51b825e29be424fffd3ef170d7047b535eb0156c04c4cbd8"}}