{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:6K7IIWL5VAFOFW2L3EZIOBN7GL","short_pith_number":"pith:6K7IIWL5","canonical_record":{"source":{"id":"1502.04612","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2015-02-16T16:35:29Z","cross_cats_sorted":[],"title_canon_sha256":"2003e5f1bb3fc713130b16ebb7db6dc3105f18a36ea175c2fc47ea5d5ae3a560","abstract_canon_sha256":"302c7ed52f00bcce2b19d58654c697ec381aad369b9324a11435fd25988f6bd7"},"schema_version":"1.0"},"canonical_sha256":"f2be84597da80ae2db4bd9328705bf32ce1bd5d9f7b17df38471b6666ff079b5","source":{"kind":"arxiv","id":"1502.04612","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1502.04612","created_at":"2026-05-18T02:26:58Z"},{"alias_kind":"arxiv_version","alias_value":"1502.04612v1","created_at":"2026-05-18T02:26:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1502.04612","created_at":"2026-05-18T02:26:58Z"},{"alias_kind":"pith_short_12","alias_value":"6K7IIWL5VAFO","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_16","alias_value":"6K7IIWL5VAFOFW2L","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_8","alias_value":"6K7IIWL5","created_at":"2026-05-18T12:29:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:6K7IIWL5VAFOFW2L3EZIOBN7GL","target":"record","payload":{"canonical_record":{"source":{"id":"1502.04612","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2015-02-16T16:35:29Z","cross_cats_sorted":[],"title_canon_sha256":"2003e5f1bb3fc713130b16ebb7db6dc3105f18a36ea175c2fc47ea5d5ae3a560","abstract_canon_sha256":"302c7ed52f00bcce2b19d58654c697ec381aad369b9324a11435fd25988f6bd7"},"schema_version":"1.0"},"canonical_sha256":"f2be84597da80ae2db4bd9328705bf32ce1bd5d9f7b17df38471b6666ff079b5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:26:58.482381Z","signature_b64":"IEX+ZqUcmTGBkG0Q8zal2Nph8Bpp7H73B3SaZky0A4rEZdmsdP27VEgfeDMLzF30efDLuMyKhneNzH0ockRaCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f2be84597da80ae2db4bd9328705bf32ce1bd5d9f7b17df38471b6666ff079b5","last_reissued_at":"2026-05-18T02:26:58.481911Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:26:58.481911Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1502.04612","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":"2026-05-18T02:26:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"e+3ccv0pVWRQlCRymjiYejzKSEiNuaTbRP7LuxJHuYukhYDZixHwxfHbH5+qYOiUW30RTuebld2EiX0J+/qqDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T03:01:11.914408Z"},"content_sha256":"04debd9bc9d5987a2bc42fa98823dce20796ef9fa15fb9b176ec0a42974281ef","schema_version":"1.0","event_id":"sha256:04debd9bc9d5987a2bc42fa98823dce20796ef9fa15fb9b176ec0a42974281ef"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:6K7IIWL5VAFOFW2L3EZIOBN7GL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Direct evidence for an evolving dust cloud from the exoplanet KIC 12557548 b","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Carole A. Haswell, Jakub J. Bochinski, Stuart P. Littlefair, Tom R. Marsh, Vikram S. Dhillon","submitted_at":"2015-02-16T16:35:29Z","abstract_excerpt":"We present simultaneous multi-color optical photometry using ULTRACAM of the transiting exoplanet KIC 12557548 b (also known as KIC 1255 b). This reveals, for the first time, the color dependence of the transit depth. Our g and z transits are similar in shape to the average Kepler short-cadence profile, and constitute the highest-quality extant coverage of individual transits. Our Night 1 transit depths are 0.85 +/- 0.04% in z; 1.00 +/- 0.03% in g; and 1.1 +/- 0.3% in u. We employ a residual-permutation method to assess the impact of correlated noise on the depth difference between the z and g"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1502.04612","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":"2026-05-18T02:26:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Jl5mijjhcn4teMUcTscs3aM3sz6PCBfPRV3T9DdqQAjAbr4S+XD81L6FKmcfpT2Na3cw7xssxlZInaDJW7ffAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T03:01:11.914765Z"},"content_sha256":"e3fc930bcd71790d58cf14358418be6110bd18c9ce78d3191a6236108cdcc67c","schema_version":"1.0","event_id":"sha256:e3fc930bcd71790d58cf14358418be6110bd18c9ce78d3191a6236108cdcc67c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6K7IIWL5VAFOFW2L3EZIOBN7GL/bundle.json","state_url":"https://pith.science/pith/6K7IIWL5VAFOFW2L3EZIOBN7GL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6K7IIWL5VAFOFW2L3EZIOBN7GL/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":"2026-05-31T03:01:11Z","links":{"resolver":"https://pith.science/pith/6K7IIWL5VAFOFW2L3EZIOBN7GL","bundle":"https://pith.science/pith/6K7IIWL5VAFOFW2L3EZIOBN7GL/bundle.json","state":"https://pith.science/pith/6K7IIWL5VAFOFW2L3EZIOBN7GL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6K7IIWL5VAFOFW2L3EZIOBN7GL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:6K7IIWL5VAFOFW2L3EZIOBN7GL","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":"302c7ed52f00bcce2b19d58654c697ec381aad369b9324a11435fd25988f6bd7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2015-02-16T16:35:29Z","title_canon_sha256":"2003e5f1bb3fc713130b16ebb7db6dc3105f18a36ea175c2fc47ea5d5ae3a560"},"schema_version":"1.0","source":{"id":"1502.04612","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1502.04612","created_at":"2026-05-18T02:26:58Z"},{"alias_kind":"arxiv_version","alias_value":"1502.04612v1","created_at":"2026-05-18T02:26:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1502.04612","created_at":"2026-05-18T02:26:58Z"},{"alias_kind":"pith_short_12","alias_value":"6K7IIWL5VAFO","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_16","alias_value":"6K7IIWL5VAFOFW2L","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_8","alias_value":"6K7IIWL5","created_at":"2026-05-18T12:29:07Z"}],"graph_snapshots":[{"event_id":"sha256:e3fc930bcd71790d58cf14358418be6110bd18c9ce78d3191a6236108cdcc67c","target":"graph","created_at":"2026-05-18T02:26:58Z","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 simultaneous multi-color optical photometry using ULTRACAM of the transiting exoplanet KIC 12557548 b (also known as KIC 1255 b). This reveals, for the first time, the color dependence of the transit depth. Our g and z transits are similar in shape to the average Kepler short-cadence profile, and constitute the highest-quality extant coverage of individual transits. Our Night 1 transit depths are 0.85 +/- 0.04% in z; 1.00 +/- 0.03% in g; and 1.1 +/- 0.3% in u. We employ a residual-permutation method to assess the impact of correlated noise on the depth difference between the z and g","authors_text":"Carole A. Haswell, Jakub J. Bochinski, Stuart P. Littlefair, Tom R. Marsh, Vikram S. Dhillon","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2015-02-16T16:35:29Z","title":"Direct evidence for an evolving dust cloud from the exoplanet KIC 12557548 b"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1502.04612","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":"sha256:04debd9bc9d5987a2bc42fa98823dce20796ef9fa15fb9b176ec0a42974281ef","target":"record","created_at":"2026-05-18T02:26:58Z","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":"302c7ed52f00bcce2b19d58654c697ec381aad369b9324a11435fd25988f6bd7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2015-02-16T16:35:29Z","title_canon_sha256":"2003e5f1bb3fc713130b16ebb7db6dc3105f18a36ea175c2fc47ea5d5ae3a560"},"schema_version":"1.0","source":{"id":"1502.04612","kind":"arxiv","version":1}},"canonical_sha256":"f2be84597da80ae2db4bd9328705bf32ce1bd5d9f7b17df38471b6666ff079b5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f2be84597da80ae2db4bd9328705bf32ce1bd5d9f7b17df38471b6666ff079b5","first_computed_at":"2026-05-18T02:26:58.481911Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:26:58.481911Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"IEX+ZqUcmTGBkG0Q8zal2Nph8Bpp7H73B3SaZky0A4rEZdmsdP27VEgfeDMLzF30efDLuMyKhneNzH0ockRaCA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:26:58.482381Z","signed_message":"canonical_sha256_bytes"},"source_id":"1502.04612","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:04debd9bc9d5987a2bc42fa98823dce20796ef9fa15fb9b176ec0a42974281ef","sha256:e3fc930bcd71790d58cf14358418be6110bd18c9ce78d3191a6236108cdcc67c"],"state_sha256":"9bd427ee15fdb706ef573299574dadca8e6e42e844b7a4e7d7aee2f789d4eb79"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zxTg3Nh4AHPzIu8Ega2jszH3Ef5ruCdQidnYPUpDRitsFdYfs0d/P2oyjIB7W6BQLbOP0AfjWfiMAkX5Hs3SBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T03:01:11.916821Z","bundle_sha256":"9aeb171fe6c22fc8a003c3d175ebff75335aec97fab6c9b024572425f79902c3"}}