{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:67APLM3EEOX6UW5MJXOV6BFR4Q","short_pith_number":"pith:67APLM3E","canonical_record":{"source":{"id":"1304.5561","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2013-04-19T23:10:00Z","cross_cats_sorted":[],"title_canon_sha256":"3c49bd3e16c98ac4e7d77c99ddbde3bdf826b6cf7d47a1f33d8d7736b3cb90ac","abstract_canon_sha256":"6a28bac11bb0ca5733360627ec69a09838600cd0d8531a0811146896825e3af5"},"schema_version":"1.0"},"canonical_sha256":"f7c0f5b36423afea5bac4ddd5f04b1e43ae929f9e997b4b6f1e4b002db914615","source":{"kind":"arxiv","id":"1304.5561","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1304.5561","created_at":"2026-05-18T01:50:24Z"},{"alias_kind":"arxiv_version","alias_value":"1304.5561v2","created_at":"2026-05-18T01:50:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1304.5561","created_at":"2026-05-18T01:50:24Z"},{"alias_kind":"pith_short_12","alias_value":"67APLM3EEOX6","created_at":"2026-05-18T12:27:36Z"},{"alias_kind":"pith_short_16","alias_value":"67APLM3EEOX6UW5M","created_at":"2026-05-18T12:27:36Z"},{"alias_kind":"pith_short_8","alias_value":"67APLM3E","created_at":"2026-05-18T12:27:36Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:67APLM3EEOX6UW5MJXOV6BFR4Q","target":"record","payload":{"canonical_record":{"source":{"id":"1304.5561","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2013-04-19T23:10:00Z","cross_cats_sorted":[],"title_canon_sha256":"3c49bd3e16c98ac4e7d77c99ddbde3bdf826b6cf7d47a1f33d8d7736b3cb90ac","abstract_canon_sha256":"6a28bac11bb0ca5733360627ec69a09838600cd0d8531a0811146896825e3af5"},"schema_version":"1.0"},"canonical_sha256":"f7c0f5b36423afea5bac4ddd5f04b1e43ae929f9e997b4b6f1e4b002db914615","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:50:24.207153Z","signature_b64":"4+73MwXEgc1RyvkGcFsMxEb8NxlqBooCBRXAWbCbMcZWZE0KLWubAgV0GnBIQs6W3XGiVifeXaHw2PjGloP5Dw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f7c0f5b36423afea5bac4ddd5f04b1e43ae929f9e997b4b6f1e4b002db914615","last_reissued_at":"2026-05-18T01:50:24.206499Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:50:24.206499Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1304.5561","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":"2026-05-18T01:50:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JfknzSvujlnZpiJBbjsTzQbqsnYer5OTAJF0DU+WHKXHWpfNyhaYzKdvoiIxDK8ru9eTBsTQXo1AU8j8LOhtCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T01:21:44.289892Z"},"content_sha256":"9d0bf2503939232a383af4887a9ae7ffd389a38e375dfcdf282d1a63a90e8aa8","schema_version":"1.0","event_id":"sha256:9d0bf2503939232a383af4887a9ae7ffd389a38e375dfcdf282d1a63a90e8aa8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:67APLM3EEOX6UW5MJXOV6BFR4Q","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Systematic Retrieval Analysis of Secondary Eclipse Spectra I: A Comparison of Atmospheric Retrieval Techniques","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Aaron Wolf, Dave Crisp, Elias Ellison, Heather Knutson, Joshua Kammer, Michael R. Line, Pieter Deroo, Xi Zhang, Yuk Yung","submitted_at":"2013-04-19T23:10:00Z","abstract_excerpt":"Spectra of exoplanet atmospheres provide us the opportunity to improve our understanding of these objects just as remote sensing in our own solar system has increased our understanding of the solar system bodies. The challenge is to quantitatively determine the range of temperatures and species abundances allowed by the data. This challenge is often difficult given the low information content of most exoplanet spectra which commonly leads to degeneracies in the interpretation. A variety of temperature and abundance retrieval approaches have been applied to exoplanet spectra, but no previous in"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1304.5561","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":"2026-05-18T01:50:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nFb+iXEJwPwSmY1MsA0pbJ4tPteWw+cUBwAS/5vPLwKsiyObk4yG8b+ThiECwzrt4Z/+vCrPe0asiwI2n+ICAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T01:21:44.290547Z"},"content_sha256":"86c7948586dd669420ddedbb53446f65c8beca5766b6b5c14f3e16b872c80833","schema_version":"1.0","event_id":"sha256:86c7948586dd669420ddedbb53446f65c8beca5766b6b5c14f3e16b872c80833"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/67APLM3EEOX6UW5MJXOV6BFR4Q/bundle.json","state_url":"https://pith.science/pith/67APLM3EEOX6UW5MJXOV6BFR4Q/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/67APLM3EEOX6UW5MJXOV6BFR4Q/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":"2026-05-30T01:21:44Z","links":{"resolver":"https://pith.science/pith/67APLM3EEOX6UW5MJXOV6BFR4Q","bundle":"https://pith.science/pith/67APLM3EEOX6UW5MJXOV6BFR4Q/bundle.json","state":"https://pith.science/pith/67APLM3EEOX6UW5MJXOV6BFR4Q/state.json","well_known_bundle":"https://pith.science/.well-known/pith/67APLM3EEOX6UW5MJXOV6BFR4Q/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:67APLM3EEOX6UW5MJXOV6BFR4Q","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":"6a28bac11bb0ca5733360627ec69a09838600cd0d8531a0811146896825e3af5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2013-04-19T23:10:00Z","title_canon_sha256":"3c49bd3e16c98ac4e7d77c99ddbde3bdf826b6cf7d47a1f33d8d7736b3cb90ac"},"schema_version":"1.0","source":{"id":"1304.5561","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1304.5561","created_at":"2026-05-18T01:50:24Z"},{"alias_kind":"arxiv_version","alias_value":"1304.5561v2","created_at":"2026-05-18T01:50:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1304.5561","created_at":"2026-05-18T01:50:24Z"},{"alias_kind":"pith_short_12","alias_value":"67APLM3EEOX6","created_at":"2026-05-18T12:27:36Z"},{"alias_kind":"pith_short_16","alias_value":"67APLM3EEOX6UW5M","created_at":"2026-05-18T12:27:36Z"},{"alias_kind":"pith_short_8","alias_value":"67APLM3E","created_at":"2026-05-18T12:27:36Z"}],"graph_snapshots":[{"event_id":"sha256:86c7948586dd669420ddedbb53446f65c8beca5766b6b5c14f3e16b872c80833","target":"graph","created_at":"2026-05-18T01:50:24Z","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":"Spectra of exoplanet atmospheres provide us the opportunity to improve our understanding of these objects just as remote sensing in our own solar system has increased our understanding of the solar system bodies. The challenge is to quantitatively determine the range of temperatures and species abundances allowed by the data. This challenge is often difficult given the low information content of most exoplanet spectra which commonly leads to degeneracies in the interpretation. A variety of temperature and abundance retrieval approaches have been applied to exoplanet spectra, but no previous in","authors_text":"Aaron Wolf, Dave Crisp, Elias Ellison, Heather Knutson, Joshua Kammer, Michael R. Line, Pieter Deroo, Xi Zhang, Yuk Yung","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2013-04-19T23:10:00Z","title":"A Systematic Retrieval Analysis of Secondary Eclipse Spectra I: A Comparison of Atmospheric Retrieval Techniques"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1304.5561","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":"sha256:9d0bf2503939232a383af4887a9ae7ffd389a38e375dfcdf282d1a63a90e8aa8","target":"record","created_at":"2026-05-18T01:50:24Z","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":"6a28bac11bb0ca5733360627ec69a09838600cd0d8531a0811146896825e3af5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2013-04-19T23:10:00Z","title_canon_sha256":"3c49bd3e16c98ac4e7d77c99ddbde3bdf826b6cf7d47a1f33d8d7736b3cb90ac"},"schema_version":"1.0","source":{"id":"1304.5561","kind":"arxiv","version":2}},"canonical_sha256":"f7c0f5b36423afea5bac4ddd5f04b1e43ae929f9e997b4b6f1e4b002db914615","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f7c0f5b36423afea5bac4ddd5f04b1e43ae929f9e997b4b6f1e4b002db914615","first_computed_at":"2026-05-18T01:50:24.206499Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:50:24.206499Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"4+73MwXEgc1RyvkGcFsMxEb8NxlqBooCBRXAWbCbMcZWZE0KLWubAgV0GnBIQs6W3XGiVifeXaHw2PjGloP5Dw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:50:24.207153Z","signed_message":"canonical_sha256_bytes"},"source_id":"1304.5561","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9d0bf2503939232a383af4887a9ae7ffd389a38e375dfcdf282d1a63a90e8aa8","sha256:86c7948586dd669420ddedbb53446f65c8beca5766b6b5c14f3e16b872c80833"],"state_sha256":"1e38a86ba76ee64f9d4148387c93435dc64068c16fdaa2940d2180ea8b79c775"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9cx0f++T7Nvbzn769rFRdmU9k296mN3OX9DxbKMnGuH/XwemUwP4JYZX/4RB2E1Vh4sH/BKVTg/ScpkPbikxBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T01:21:44.294153Z","bundle_sha256":"0506311366482c0143bf37773ad5b7cf91ab62936736b1de1396e73dff8b97c5"}}