{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2002:QLXVO2HYXLNNQ5UNNUZ64DF5AD","short_pith_number":"pith:QLXVO2HY","canonical_record":{"source":{"id":"astro-ph/0202273","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2002-02-14T19:28:56Z","cross_cats_sorted":[],"title_canon_sha256":"342c8270461f1c998e4bd3bc28951683352f3cdde316d41bf3c3b779aab66899","abstract_canon_sha256":"301ef92cd2199758acdbdef498f6a1b598944afeb3fed96e643c1c3cd21cbadb"},"schema_version":"1.0"},"canonical_sha256":"82ef5768f8badad8768d6d33ee0cbd00d08ec7ddd29aa6751aceae640a5c64cd","source":{"kind":"arxiv","id":"astro-ph/0202273","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0202273","created_at":"2026-07-04T16:29:24Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0202273v1","created_at":"2026-07-04T16:29:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0202273","created_at":"2026-07-04T16:29:24Z"},{"alias_kind":"pith_short_12","alias_value":"QLXVO2HYXLNN","created_at":"2026-07-04T16:29:24Z"},{"alias_kind":"pith_short_16","alias_value":"QLXVO2HYXLNNQ5UN","created_at":"2026-07-04T16:29:24Z"},{"alias_kind":"pith_short_8","alias_value":"QLXVO2HY","created_at":"2026-07-04T16:29:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2002:QLXVO2HYXLNNQ5UNNUZ64DF5AD","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0202273","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2002-02-14T19:28:56Z","cross_cats_sorted":[],"title_canon_sha256":"342c8270461f1c998e4bd3bc28951683352f3cdde316d41bf3c3b779aab66899","abstract_canon_sha256":"301ef92cd2199758acdbdef498f6a1b598944afeb3fed96e643c1c3cd21cbadb"},"schema_version":"1.0"},"canonical_sha256":"82ef5768f8badad8768d6d33ee0cbd00d08ec7ddd29aa6751aceae640a5c64cd","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:29:24.374943Z","signature_b64":"eh/OSdZO/V2aqjJOacqO7dUgLAHVMbF1B8A68WZo6yNTq1v1P86bFNkT5wa4MXrBjXewMRe85ovrZdlLGaYuAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"82ef5768f8badad8768d6d33ee0cbd00d08ec7ddd29aa6751aceae640a5c64cd","last_reissued_at":"2026-07-04T16:29:24.374496Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:29:24.374496Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0202273","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":"2026-07-04T16:29:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/Pda338UdRqyLpCLCjbnn/hk8hp/Mc9n7MgEh1viA+0hR6MtTnK0zCVzDHn328wWPu2au1jZzNzKGQUUK2eSBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T16:07:30.726479Z"},"content_sha256":"51905984ea10afd407fbed4a73ce678428fe9277a8c90d5da68a076af6b12fdc","schema_version":"1.0","event_id":"sha256:51905984ea10afd407fbed4a73ce678428fe9277a8c90d5da68a076af6b12fdc"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2002:QLXVO2HYXLNNQ5UNNUZ64DF5AD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Are There Unstable Planetary Systems Around White Dwarfs?","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"John H. Debes, Steinn Sigurdsson","submitted_at":"2002-02-14T19:28:56Z","abstract_excerpt":"The presence of planets around solar-type stars suggests that many white dwarfs should have relic planetary systems. While planets closer than $\\sim$ 5~AU will most likely not survive the post-main sequence lifetime of its parent star, any planet with semimajor axis $>$ 5~AU will survive, and its semimajor axis will increase as the central star loses mass. Since the stability of adjacent orbits to mutual planet-planet perturbations depends on the ratio of the planet mass to the central star's mass, some planets in previously stable orbits around a star undergoing mass loss will become unstable"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0202273","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/astro-ph/0202273/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":"2026-07-04T16:29:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5YR3Q6V5nC7z9EWxBC5XkIuG1tUJWn/QIpQvNB4jQySTKyXcX7dTXGY9zbB+oNruv3TPWSIfOA1u1Vl45upmCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T16:07:30.726863Z"},"content_sha256":"22b22cbbc3974becf88ee3745cbab95a75a4c758f7e16c81f5af04ab1d9da48e","schema_version":"1.0","event_id":"sha256:22b22cbbc3974becf88ee3745cbab95a75a4c758f7e16c81f5af04ab1d9da48e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QLXVO2HYXLNNQ5UNNUZ64DF5AD/bundle.json","state_url":"https://pith.science/pith/QLXVO2HYXLNNQ5UNNUZ64DF5AD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QLXVO2HYXLNNQ5UNNUZ64DF5AD/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":"2026-08-03T16:07:30Z","links":{"resolver":"https://pith.science/pith/QLXVO2HYXLNNQ5UNNUZ64DF5AD","bundle":"https://pith.science/pith/QLXVO2HYXLNNQ5UNNUZ64DF5AD/bundle.json","state":"https://pith.science/pith/QLXVO2HYXLNNQ5UNNUZ64DF5AD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QLXVO2HYXLNNQ5UNNUZ64DF5AD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2002:QLXVO2HYXLNNQ5UNNUZ64DF5AD","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":"301ef92cd2199758acdbdef498f6a1b598944afeb3fed96e643c1c3cd21cbadb","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2002-02-14T19:28:56Z","title_canon_sha256":"342c8270461f1c998e4bd3bc28951683352f3cdde316d41bf3c3b779aab66899"},"schema_version":"1.0","source":{"id":"astro-ph/0202273","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0202273","created_at":"2026-07-04T16:29:24Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0202273v1","created_at":"2026-07-04T16:29:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0202273","created_at":"2026-07-04T16:29:24Z"},{"alias_kind":"pith_short_12","alias_value":"QLXVO2HYXLNN","created_at":"2026-07-04T16:29:24Z"},{"alias_kind":"pith_short_16","alias_value":"QLXVO2HYXLNNQ5UN","created_at":"2026-07-04T16:29:24Z"},{"alias_kind":"pith_short_8","alias_value":"QLXVO2HY","created_at":"2026-07-04T16:29:24Z"}],"graph_snapshots":[{"event_id":"sha256:22b22cbbc3974becf88ee3745cbab95a75a4c758f7e16c81f5af04ab1d9da48e","target":"graph","created_at":"2026-07-04T16:29:24Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/astro-ph/0202273/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The presence of planets around solar-type stars suggests that many white dwarfs should have relic planetary systems. While planets closer than $\\sim$ 5~AU will most likely not survive the post-main sequence lifetime of its parent star, any planet with semimajor axis $>$ 5~AU will survive, and its semimajor axis will increase as the central star loses mass. Since the stability of adjacent orbits to mutual planet-planet perturbations depends on the ratio of the planet mass to the central star's mass, some planets in previously stable orbits around a star undergoing mass loss will become unstable","authors_text":"John H. Debes, Steinn Sigurdsson","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2002-02-14T19:28:56Z","title":"Are There Unstable Planetary Systems Around White Dwarfs?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0202273","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":"sha256:51905984ea10afd407fbed4a73ce678428fe9277a8c90d5da68a076af6b12fdc","target":"record","created_at":"2026-07-04T16:29:24Z","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":"301ef92cd2199758acdbdef498f6a1b598944afeb3fed96e643c1c3cd21cbadb","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2002-02-14T19:28:56Z","title_canon_sha256":"342c8270461f1c998e4bd3bc28951683352f3cdde316d41bf3c3b779aab66899"},"schema_version":"1.0","source":{"id":"astro-ph/0202273","kind":"arxiv","version":1}},"canonical_sha256":"82ef5768f8badad8768d6d33ee0cbd00d08ec7ddd29aa6751aceae640a5c64cd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"82ef5768f8badad8768d6d33ee0cbd00d08ec7ddd29aa6751aceae640a5c64cd","first_computed_at":"2026-07-04T16:29:24.374496Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:29:24.374496Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"eh/OSdZO/V2aqjJOacqO7dUgLAHVMbF1B8A68WZo6yNTq1v1P86bFNkT5wa4MXrBjXewMRe85ovrZdlLGaYuAA==","signature_status":"signed_v1","signed_at":"2026-07-04T16:29:24.374943Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0202273","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:51905984ea10afd407fbed4a73ce678428fe9277a8c90d5da68a076af6b12fdc","sha256:22b22cbbc3974becf88ee3745cbab95a75a4c758f7e16c81f5af04ab1d9da48e"],"state_sha256":"6f8eb0218eecfef7090768b564944f237d8de342a41b1f2b1f154dce4681ceed"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"u63UyheFwv2fOtmtXlW48dxbJc4BqPl4DSc2iJlkCzmllgimzEqUGD7rq62jde9F13HZgY2pDsahE47Rc/xHBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T16:07:30.729199Z","bundle_sha256":"4613fd20734a96372560a6f290ce4465163482d853ea60620603f89eb1b6c04c"}}