{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:PFXG3S7IGZHCHDUW7BP5GVXHNO","short_pith_number":"pith:PFXG3S7I","canonical_record":{"source":{"id":"2510.27386","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2025-10-31T11:25:30Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"d55d68afe1d58e0a719ca84bce8f5f48991027d6d9d93028f27fd1fc2e2a5643","abstract_canon_sha256":"c23f62fb6fbb667d4003b5899e25eb01565f8fb8d7b0d4caecb9a56559c72d18"},"schema_version":"1.0"},"canonical_sha256":"796e6dcbe8364e238e96f85fd356e76b9be1fca9526be84223f0358b5c1b041d","source":{"kind":"arxiv","id":"2510.27386","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2510.27386","created_at":"2026-06-03T01:05:46Z"},{"alias_kind":"arxiv_version","alias_value":"2510.27386v2","created_at":"2026-06-03T01:05:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2510.27386","created_at":"2026-06-03T01:05:46Z"},{"alias_kind":"pith_short_12","alias_value":"PFXG3S7IGZHC","created_at":"2026-06-03T01:05:46Z"},{"alias_kind":"pith_short_16","alias_value":"PFXG3S7IGZHCHDUW","created_at":"2026-06-03T01:05:46Z"},{"alias_kind":"pith_short_8","alias_value":"PFXG3S7I","created_at":"2026-06-03T01:05:46Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:PFXG3S7IGZHCHDUW7BP5GVXHNO","target":"record","payload":{"canonical_record":{"source":{"id":"2510.27386","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2025-10-31T11:25:30Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"d55d68afe1d58e0a719ca84bce8f5f48991027d6d9d93028f27fd1fc2e2a5643","abstract_canon_sha256":"c23f62fb6fbb667d4003b5899e25eb01565f8fb8d7b0d4caecb9a56559c72d18"},"schema_version":"1.0"},"canonical_sha256":"796e6dcbe8364e238e96f85fd356e76b9be1fca9526be84223f0358b5c1b041d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-03T01:05:46.053521Z","signature_b64":"RrEWaunnptAwdYOWoEJwx/gMSjbD8u+r8qRXs9EiA3dpaTMD/mZSJN9Rk3ePE9QRDngyQEjiGfMLrmw1wq88Dg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"796e6dcbe8364e238e96f85fd356e76b9be1fca9526be84223f0358b5c1b041d","last_reissued_at":"2026-06-03T01:05:46.053031Z","signature_status":"signed_v1","first_computed_at":"2026-06-03T01:05:46.053031Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2510.27386","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":"2026-06-03T01:05:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0B+0aHMdOCG8m1/zbTwYnVe/IDFwRXDiPOQjyOyfVQt6wlFYAHj4zdG6Xt32Wi8mRuBsBWbY7bVpSMSIGg6iBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T02:40:56.801014Z"},"content_sha256":"de059db5fe03c8ebcfe59d4082cca14e531d9845df702ee4acf0f3940faffb2d","schema_version":"1.0","event_id":"sha256:de059db5fe03c8ebcfe59d4082cca14e531d9845df702ee4acf0f3940faffb2d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:PFXG3S7IGZHCHDUW7BP5GVXHNO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Stacking transmission spectra of different exoplanets","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.IM"],"primary_cat":"astro-ph.EP","authors_text":"James E. Owen, James Kirk","submitted_at":"2025-10-31T11:25:30Z","abstract_excerpt":"In many areas of astronomy, spectra of different objects are co-added or stacked to improve signal-to-noise and reveal population-level characteristics. As the number of exoplanets with measured transmission spectra grows, it becomes important to understand when stacking spectra from different exoplanets is appropriate and what stacked spectra physically represent. Stacking will be particularly valuable for long-period planets, where repeated observations of the same planet are time-consuming. Here, we show that stacked exoplanet transmission spectra can, under well-defined conditions, be repr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2510.27386","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2510.27386/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-06-03T01:05:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Tl0td0gqwgAfD0H6A0pep1wxpnXQJ1GdwAsTFYJZ0ADreCZHD7OG4/bd5vCyOxsO6EyJiJHJtg/DLaf+gr9cDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T02:40:56.801554Z"},"content_sha256":"1a730c82d7eaab5c56ceec103209da5223d6b246f14e10de9c02786777a3e7ee","schema_version":"1.0","event_id":"sha256:1a730c82d7eaab5c56ceec103209da5223d6b246f14e10de9c02786777a3e7ee"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PFXG3S7IGZHCHDUW7BP5GVXHNO/bundle.json","state_url":"https://pith.science/pith/PFXG3S7IGZHCHDUW7BP5GVXHNO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PFXG3S7IGZHCHDUW7BP5GVXHNO/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":"2026-08-06T02:40:56Z","links":{"resolver":"https://pith.science/pith/PFXG3S7IGZHCHDUW7BP5GVXHNO","bundle":"https://pith.science/pith/PFXG3S7IGZHCHDUW7BP5GVXHNO/bundle.json","state":"https://pith.science/pith/PFXG3S7IGZHCHDUW7BP5GVXHNO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PFXG3S7IGZHCHDUW7BP5GVXHNO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:PFXG3S7IGZHCHDUW7BP5GVXHNO","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":"c23f62fb6fbb667d4003b5899e25eb01565f8fb8d7b0d4caecb9a56559c72d18","cross_cats_sorted":["astro-ph.IM"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2025-10-31T11:25:30Z","title_canon_sha256":"d55d68afe1d58e0a719ca84bce8f5f48991027d6d9d93028f27fd1fc2e2a5643"},"schema_version":"1.0","source":{"id":"2510.27386","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2510.27386","created_at":"2026-06-03T01:05:46Z"},{"alias_kind":"arxiv_version","alias_value":"2510.27386v2","created_at":"2026-06-03T01:05:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2510.27386","created_at":"2026-06-03T01:05:46Z"},{"alias_kind":"pith_short_12","alias_value":"PFXG3S7IGZHC","created_at":"2026-06-03T01:05:46Z"},{"alias_kind":"pith_short_16","alias_value":"PFXG3S7IGZHCHDUW","created_at":"2026-06-03T01:05:46Z"},{"alias_kind":"pith_short_8","alias_value":"PFXG3S7I","created_at":"2026-06-03T01:05:46Z"}],"graph_snapshots":[{"event_id":"sha256:1a730c82d7eaab5c56ceec103209da5223d6b246f14e10de9c02786777a3e7ee","target":"graph","created_at":"2026-06-03T01:05:46Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2510.27386/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In many areas of astronomy, spectra of different objects are co-added or stacked to improve signal-to-noise and reveal population-level characteristics. As the number of exoplanets with measured transmission spectra grows, it becomes important to understand when stacking spectra from different exoplanets is appropriate and what stacked spectra physically represent. Stacking will be particularly valuable for long-period planets, where repeated observations of the same planet are time-consuming. Here, we show that stacked exoplanet transmission spectra can, under well-defined conditions, be repr","authors_text":"James E. Owen, James Kirk","cross_cats":["astro-ph.IM"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2025-10-31T11:25:30Z","title":"Stacking transmission spectra of different exoplanets"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2510.27386","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:de059db5fe03c8ebcfe59d4082cca14e531d9845df702ee4acf0f3940faffb2d","target":"record","created_at":"2026-06-03T01:05:46Z","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":"c23f62fb6fbb667d4003b5899e25eb01565f8fb8d7b0d4caecb9a56559c72d18","cross_cats_sorted":["astro-ph.IM"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2025-10-31T11:25:30Z","title_canon_sha256":"d55d68afe1d58e0a719ca84bce8f5f48991027d6d9d93028f27fd1fc2e2a5643"},"schema_version":"1.0","source":{"id":"2510.27386","kind":"arxiv","version":2}},"canonical_sha256":"796e6dcbe8364e238e96f85fd356e76b9be1fca9526be84223f0358b5c1b041d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"796e6dcbe8364e238e96f85fd356e76b9be1fca9526be84223f0358b5c1b041d","first_computed_at":"2026-06-03T01:05:46.053031Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-03T01:05:46.053031Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"RrEWaunnptAwdYOWoEJwx/gMSjbD8u+r8qRXs9EiA3dpaTMD/mZSJN9Rk3ePE9QRDngyQEjiGfMLrmw1wq88Dg==","signature_status":"signed_v1","signed_at":"2026-06-03T01:05:46.053521Z","signed_message":"canonical_sha256_bytes"},"source_id":"2510.27386","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:de059db5fe03c8ebcfe59d4082cca14e531d9845df702ee4acf0f3940faffb2d","sha256:1a730c82d7eaab5c56ceec103209da5223d6b246f14e10de9c02786777a3e7ee"],"state_sha256":"15cfbd8cfed4455229229011e0c7ab74ab029a7b6359b0abc50a2cd86f6a6533"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"a3XbqfrJgQ9yEn6wYkx9CXB1WzgXzna57IRUW+81xaJGjQGjEklFmJy53Y0pW8mluvf/sZxvrq3E6QJOCRRzBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T02:40:56.804826Z","bundle_sha256":"82289e70442507e5155d0eba9bab8d2c5259b859f748f5ddf3aeb7c426259580"}}