{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:VIYCJANOB3FMQN4VZ7D6UQFHPF","short_pith_number":"pith:VIYCJANO","canonical_record":{"source":{"id":"1502.05349","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2015-02-18T19:36:59Z","cross_cats_sorted":[],"title_canon_sha256":"67c48889ee7af09066374e113bf8b6e7b6131f374d9de72dd9846f63a299130e","abstract_canon_sha256":"a2aaf06ef2116b6aae63f23afae3acf331d5e2cdd69afacd29541f9a07beeb3e"},"schema_version":"1.0"},"canonical_sha256":"aa302481ae0ecac83795cfc7ea40a7794f68ee2163cb085f33e143b80f854b87","source":{"kind":"arxiv","id":"1502.05349","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1502.05349","created_at":"2026-05-18T01:59:37Z"},{"alias_kind":"arxiv_version","alias_value":"1502.05349v1","created_at":"2026-05-18T01:59:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1502.05349","created_at":"2026-05-18T01:59:37Z"},{"alias_kind":"pith_short_12","alias_value":"VIYCJANOB3FM","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_16","alias_value":"VIYCJANOB3FMQN4V","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_8","alias_value":"VIYCJANO","created_at":"2026-05-18T12:29:44Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:VIYCJANOB3FMQN4VZ7D6UQFHPF","target":"record","payload":{"canonical_record":{"source":{"id":"1502.05349","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2015-02-18T19:36:59Z","cross_cats_sorted":[],"title_canon_sha256":"67c48889ee7af09066374e113bf8b6e7b6131f374d9de72dd9846f63a299130e","abstract_canon_sha256":"a2aaf06ef2116b6aae63f23afae3acf331d5e2cdd69afacd29541f9a07beeb3e"},"schema_version":"1.0"},"canonical_sha256":"aa302481ae0ecac83795cfc7ea40a7794f68ee2163cb085f33e143b80f854b87","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:59:37.458250Z","signature_b64":"CEG4xfE66rIXnULnbywgcjf+0wWZVlhQfQzkWxAUn/pv+DLDkvKnc3orrt61TzB5FHxdoNNTa9fj9g22P03LAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"aa302481ae0ecac83795cfc7ea40a7794f68ee2163cb085f33e143b80f854b87","last_reissued_at":"2026-05-18T01:59:37.457498Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:59:37.457498Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1502.05349","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":"2026-05-18T01:59:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zM1MLo0WssUTgeGJDjfhRzl3zVwjk2HV7HA/DUW6pLz93EbN2kAf/L5EgCxx0qh+BHkV2r2DzSstioKX1rN4Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T11:31:43.956187Z"},"content_sha256":"d085cabac77aaad9bcf49ecff624005a9eb8a16108182ffbe00bb708f71f8248","schema_version":"1.0","event_id":"sha256:d085cabac77aaad9bcf49ecff624005a9eb8a16108182ffbe00bb708f71f8248"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:VIYCJANOB3FMQN4VZ7D6UQFHPF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"In Search of Future Earths: Assessing the possibility of finding Earth analogues in the later stages of their habitable lifetimes","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"C. S. Cockell, J. A. Raven, J. S. Greaves, J. T. O'Malley-James","submitted_at":"2015-02-18T19:36:59Z","abstract_excerpt":"Earth will become uninhabitable within 2-3 Gyr as a result of the moving boundaries of the habitable zone caused by the increasing luminosity of the Sun. Predictions about the future of habitable conditions on Earth include a decline in species diversity and habitat extent, ocean loss and changes in the magnitudes of geochemical cycles. However, testing these predictions on the present-day Earth is difficult. The discovery of a planet that is a near analogue to the far future Earth could provide a means to test these predictions. Such a planet would need to have an Earth-like biosphere history"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1502.05349","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":"2026-05-18T01:59:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XuwMRDZsBG7Xjdo9YqFWHfLCoKIS9wAs5tcFM6SRxqK+bWlZDvaPOJMkSaa6PLUOI/RITTs0Szh1FFWR7AVNAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T11:31:43.956549Z"},"content_sha256":"2dfa6b0ca354fc4c7d2ec81d788b623e04c8671312f5082e9db516f6d97b26d6","schema_version":"1.0","event_id":"sha256:2dfa6b0ca354fc4c7d2ec81d788b623e04c8671312f5082e9db516f6d97b26d6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VIYCJANOB3FMQN4VZ7D6UQFHPF/bundle.json","state_url":"https://pith.science/pith/VIYCJANOB3FMQN4VZ7D6UQFHPF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VIYCJANOB3FMQN4VZ7D6UQFHPF/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":"2026-06-08T11:31:43Z","links":{"resolver":"https://pith.science/pith/VIYCJANOB3FMQN4VZ7D6UQFHPF","bundle":"https://pith.science/pith/VIYCJANOB3FMQN4VZ7D6UQFHPF/bundle.json","state":"https://pith.science/pith/VIYCJANOB3FMQN4VZ7D6UQFHPF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VIYCJANOB3FMQN4VZ7D6UQFHPF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:VIYCJANOB3FMQN4VZ7D6UQFHPF","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":"a2aaf06ef2116b6aae63f23afae3acf331d5e2cdd69afacd29541f9a07beeb3e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2015-02-18T19:36:59Z","title_canon_sha256":"67c48889ee7af09066374e113bf8b6e7b6131f374d9de72dd9846f63a299130e"},"schema_version":"1.0","source":{"id":"1502.05349","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1502.05349","created_at":"2026-05-18T01:59:37Z"},{"alias_kind":"arxiv_version","alias_value":"1502.05349v1","created_at":"2026-05-18T01:59:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1502.05349","created_at":"2026-05-18T01:59:37Z"},{"alias_kind":"pith_short_12","alias_value":"VIYCJANOB3FM","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_16","alias_value":"VIYCJANOB3FMQN4V","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_8","alias_value":"VIYCJANO","created_at":"2026-05-18T12:29:44Z"}],"graph_snapshots":[{"event_id":"sha256:2dfa6b0ca354fc4c7d2ec81d788b623e04c8671312f5082e9db516f6d97b26d6","target":"graph","created_at":"2026-05-18T01:59:37Z","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":"Earth will become uninhabitable within 2-3 Gyr as a result of the moving boundaries of the habitable zone caused by the increasing luminosity of the Sun. Predictions about the future of habitable conditions on Earth include a decline in species diversity and habitat extent, ocean loss and changes in the magnitudes of geochemical cycles. However, testing these predictions on the present-day Earth is difficult. The discovery of a planet that is a near analogue to the far future Earth could provide a means to test these predictions. Such a planet would need to have an Earth-like biosphere history","authors_text":"C. S. Cockell, J. A. Raven, J. S. Greaves, J. T. O'Malley-James","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2015-02-18T19:36:59Z","title":"In Search of Future Earths: Assessing the possibility of finding Earth analogues in the later stages of their habitable lifetimes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1502.05349","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:d085cabac77aaad9bcf49ecff624005a9eb8a16108182ffbe00bb708f71f8248","target":"record","created_at":"2026-05-18T01:59:37Z","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":"a2aaf06ef2116b6aae63f23afae3acf331d5e2cdd69afacd29541f9a07beeb3e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2015-02-18T19:36:59Z","title_canon_sha256":"67c48889ee7af09066374e113bf8b6e7b6131f374d9de72dd9846f63a299130e"},"schema_version":"1.0","source":{"id":"1502.05349","kind":"arxiv","version":1}},"canonical_sha256":"aa302481ae0ecac83795cfc7ea40a7794f68ee2163cb085f33e143b80f854b87","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"aa302481ae0ecac83795cfc7ea40a7794f68ee2163cb085f33e143b80f854b87","first_computed_at":"2026-05-18T01:59:37.457498Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:59:37.457498Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"CEG4xfE66rIXnULnbywgcjf+0wWZVlhQfQzkWxAUn/pv+DLDkvKnc3orrt61TzB5FHxdoNNTa9fj9g22P03LAg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:59:37.458250Z","signed_message":"canonical_sha256_bytes"},"source_id":"1502.05349","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d085cabac77aaad9bcf49ecff624005a9eb8a16108182ffbe00bb708f71f8248","sha256:2dfa6b0ca354fc4c7d2ec81d788b623e04c8671312f5082e9db516f6d97b26d6"],"state_sha256":"1b97d98d665a8ba8016d2f3d8c67d73371b9d48a677cd55be500547959a62f84"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"S2rllmCpcrg0bN1fihSIg+n54BzXG4HmSp8K2vp0H/HZTb+UeQ3oxpOklFawj4Ea32jUmSw56NGxb90O/2DDCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-08T11:31:43.958387Z","bundle_sha256":"990440dcc7f3b694de7e7e8e391cab8d111bedb17caa3441da10ff284b9ea418"}}