{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:K2WV7VDH6JD4NVDXD6XFZ7A53R","short_pith_number":"pith:K2WV7VDH","canonical_record":{"source":{"id":"2509.07297","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2025-09-09T00:03:58Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"8206492a85218f309116ddca65c148bcb3a6eb499ae3b1c386c65083e59b04e5","abstract_canon_sha256":"f1dfa5f603ab2cab84b07a5f9d5df8bab94e8d4631baa2ddb3816d65e875eed1"},"schema_version":"1.0"},"canonical_sha256":"56ad5fd467f247c6d4771fae5cfc1ddc60227fd0331155c20f200afc683e0313","source":{"kind":"arxiv","id":"2509.07297","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2509.07297","created_at":"2026-07-05T12:07:19Z"},{"alias_kind":"arxiv_version","alias_value":"2509.07297v1","created_at":"2026-07-05T12:07:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2509.07297","created_at":"2026-07-05T12:07:19Z"},{"alias_kind":"pith_short_12","alias_value":"K2WV7VDH6JD4","created_at":"2026-07-05T12:07:19Z"},{"alias_kind":"pith_short_16","alias_value":"K2WV7VDH6JD4NVDX","created_at":"2026-07-05T12:07:19Z"},{"alias_kind":"pith_short_8","alias_value":"K2WV7VDH","created_at":"2026-07-05T12:07:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:K2WV7VDH6JD4NVDXD6XFZ7A53R","target":"record","payload":{"canonical_record":{"source":{"id":"2509.07297","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2025-09-09T00:03:58Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"8206492a85218f309116ddca65c148bcb3a6eb499ae3b1c386c65083e59b04e5","abstract_canon_sha256":"f1dfa5f603ab2cab84b07a5f9d5df8bab94e8d4631baa2ddb3816d65e875eed1"},"schema_version":"1.0"},"canonical_sha256":"56ad5fd467f247c6d4771fae5cfc1ddc60227fd0331155c20f200afc683e0313","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T12:07:19.161597Z","signature_b64":"ANyF7DusPFWMeOoSReHe2/oGALGPdCXh0OJY/+f3Fs6Aw/Hzruc3UYLnVhSVT4ZHIRR98ggwQbngHPUncK2sAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"56ad5fd467f247c6d4771fae5cfc1ddc60227fd0331155c20f200afc683e0313","last_reissued_at":"2026-07-05T12:07:19.161104Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T12:07:19.161104Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2509.07297","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":"2026-07-05T12:07:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ATVYOWA85aSvRHWfatpfYi/ttEM5UDYsWL8ufGosZBZpQgiAVKls+iZB1GzzLO0TeqJmfbYzOePqCGWz2fqlBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T00:36:20.225678Z"},"content_sha256":"b95c4b1c96f0ca5598d6ae6b1d791c528172f7515964da3c0d35f8de5b548a2c","schema_version":"1.0","event_id":"sha256:b95c4b1c96f0ca5598d6ae6b1d791c528172f7515964da3c0d35f8de5b548a2c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:K2WV7VDH6JD4NVDXD6XFZ7A53R","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Bioverse: Assessing the Ability of Direct Imaging Surveys to Empirically Constrain the Habitable Zone via Trends in Albedo","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":["astro-ph.IM"],"primary_cat":"astro-ph.EP","authors_text":"Christopher C. Stark, Daniel Apai, Kevin K. Hardegree-Ullman, Martin Schlecker, Noah W. Tuchow","submitted_at":"2025-09-09T00:03:58Z","abstract_excerpt":"Will future direct imaging missions such as NASA's upcoming Habitable Worlds Observatory (HWO) be able to understand Earth-sized planets as a population? In this study, we simulate the ability of space-based coronagraphy missions to uncover trends in planetary albedo as a function of instellation, and potentially constrain the boundaries of the habitable zone. We adapt the Bioverse statistical comparative planetology framework to simulate the scientific output of possible designs for HWO. With this tool, we generate a synthetic planetary population with injected population-level trends in albe"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2509.07297","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2509.07297/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":"2026-07-05T12:07:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zGpgkbevj/Bdj3Fu/Ws3R0estp5QLqAZ1RkNkr9Z/6VaXiCOwvvVghvUgrm7iE4Sq+NGcSCczmSZX+rdzLpWAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T00:36:20.226169Z"},"content_sha256":"4ca25fa8112105186f77c13f2b6b1dd7804d199eba417a9787911f9b38f2cbbf","schema_version":"1.0","event_id":"sha256:4ca25fa8112105186f77c13f2b6b1dd7804d199eba417a9787911f9b38f2cbbf"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/K2WV7VDH6JD4NVDXD6XFZ7A53R/bundle.json","state_url":"https://pith.science/pith/K2WV7VDH6JD4NVDXD6XFZ7A53R/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/K2WV7VDH6JD4NVDXD6XFZ7A53R/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":"2026-08-06T00:36:20Z","links":{"resolver":"https://pith.science/pith/K2WV7VDH6JD4NVDXD6XFZ7A53R","bundle":"https://pith.science/pith/K2WV7VDH6JD4NVDXD6XFZ7A53R/bundle.json","state":"https://pith.science/pith/K2WV7VDH6JD4NVDXD6XFZ7A53R/state.json","well_known_bundle":"https://pith.science/.well-known/pith/K2WV7VDH6JD4NVDXD6XFZ7A53R/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:K2WV7VDH6JD4NVDXD6XFZ7A53R","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":"f1dfa5f603ab2cab84b07a5f9d5df8bab94e8d4631baa2ddb3816d65e875eed1","cross_cats_sorted":["astro-ph.IM"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2025-09-09T00:03:58Z","title_canon_sha256":"8206492a85218f309116ddca65c148bcb3a6eb499ae3b1c386c65083e59b04e5"},"schema_version":"1.0","source":{"id":"2509.07297","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2509.07297","created_at":"2026-07-05T12:07:19Z"},{"alias_kind":"arxiv_version","alias_value":"2509.07297v1","created_at":"2026-07-05T12:07:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2509.07297","created_at":"2026-07-05T12:07:19Z"},{"alias_kind":"pith_short_12","alias_value":"K2WV7VDH6JD4","created_at":"2026-07-05T12:07:19Z"},{"alias_kind":"pith_short_16","alias_value":"K2WV7VDH6JD4NVDX","created_at":"2026-07-05T12:07:19Z"},{"alias_kind":"pith_short_8","alias_value":"K2WV7VDH","created_at":"2026-07-05T12:07:19Z"}],"graph_snapshots":[{"event_id":"sha256:4ca25fa8112105186f77c13f2b6b1dd7804d199eba417a9787911f9b38f2cbbf","target":"graph","created_at":"2026-07-05T12:07:19Z","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/2509.07297/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Will future direct imaging missions such as NASA's upcoming Habitable Worlds Observatory (HWO) be able to understand Earth-sized planets as a population? In this study, we simulate the ability of space-based coronagraphy missions to uncover trends in planetary albedo as a function of instellation, and potentially constrain the boundaries of the habitable zone. We adapt the Bioverse statistical comparative planetology framework to simulate the scientific output of possible designs for HWO. With this tool, we generate a synthetic planetary population with injected population-level trends in albe","authors_text":"Christopher C. Stark, Daniel Apai, Kevin K. Hardegree-Ullman, Martin Schlecker, Noah W. Tuchow","cross_cats":["astro-ph.IM"],"headline":"","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2025-09-09T00:03:58Z","title":"Bioverse: Assessing the Ability of Direct Imaging Surveys to Empirically Constrain the Habitable Zone via Trends in Albedo"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2509.07297","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:b95c4b1c96f0ca5598d6ae6b1d791c528172f7515964da3c0d35f8de5b548a2c","target":"record","created_at":"2026-07-05T12:07:19Z","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":"f1dfa5f603ab2cab84b07a5f9d5df8bab94e8d4631baa2ddb3816d65e875eed1","cross_cats_sorted":["astro-ph.IM"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2025-09-09T00:03:58Z","title_canon_sha256":"8206492a85218f309116ddca65c148bcb3a6eb499ae3b1c386c65083e59b04e5"},"schema_version":"1.0","source":{"id":"2509.07297","kind":"arxiv","version":1}},"canonical_sha256":"56ad5fd467f247c6d4771fae5cfc1ddc60227fd0331155c20f200afc683e0313","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"56ad5fd467f247c6d4771fae5cfc1ddc60227fd0331155c20f200afc683e0313","first_computed_at":"2026-07-05T12:07:19.161104Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T12:07:19.161104Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ANyF7DusPFWMeOoSReHe2/oGALGPdCXh0OJY/+f3Fs6Aw/Hzruc3UYLnVhSVT4ZHIRR98ggwQbngHPUncK2sAw==","signature_status":"signed_v1","signed_at":"2026-07-05T12:07:19.161597Z","signed_message":"canonical_sha256_bytes"},"source_id":"2509.07297","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b95c4b1c96f0ca5598d6ae6b1d791c528172f7515964da3c0d35f8de5b548a2c","sha256:4ca25fa8112105186f77c13f2b6b1dd7804d199eba417a9787911f9b38f2cbbf"],"state_sha256":"3b26747292ea7ab7b17d5e8da62bac2acf8e35c3df262a1fd78d59565f2955c6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Bu7t1AhLT/DKLDgLnxHwjX0U4esFwfUlDZThNkwnbWsNIi+0/XyqAP7IwFMraMogEM/EhwfJt3BClvegpG4qAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T00:36:20.229374Z","bundle_sha256":"b8f4b2a7259bbae9f19b99daa8f7ac5b1599190ad6f4985b59a031fb570c6f00"}}