{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2003:XCLZRKPXD5UTWUYIRHI3FB6SH6","short_pith_number":"pith:XCLZRKPX","canonical_record":{"source":{"id":"astro-ph/0312577","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2003-12-22T11:59:36Z","cross_cats_sorted":[],"title_canon_sha256":"635b18033e0b5817220d409a4acf7239e12fc8c1e7b3f10b26d72df4ff7ccd59","abstract_canon_sha256":"6c35818f93a40d3c30960d279b92a34b7a9230763805c3f56878343a5939f784"},"schema_version":"1.0"},"canonical_sha256":"b89798a9f71f693b530889d1b287d23fac2e5e8a2ec569e67bfd697eebb0e137","source":{"kind":"arxiv","id":"astro-ph/0312577","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0312577","created_at":"2026-07-04T16:38:03Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0312577v1","created_at":"2026-07-04T16:38:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0312577","created_at":"2026-07-04T16:38:03Z"},{"alias_kind":"pith_short_12","alias_value":"XCLZRKPXD5UT","created_at":"2026-07-04T16:38:03Z"},{"alias_kind":"pith_short_16","alias_value":"XCLZRKPXD5UTWUYI","created_at":"2026-07-04T16:38:03Z"},{"alias_kind":"pith_short_8","alias_value":"XCLZRKPX","created_at":"2026-07-04T16:38:03Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2003:XCLZRKPXD5UTWUYIRHI3FB6SH6","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0312577","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2003-12-22T11:59:36Z","cross_cats_sorted":[],"title_canon_sha256":"635b18033e0b5817220d409a4acf7239e12fc8c1e7b3f10b26d72df4ff7ccd59","abstract_canon_sha256":"6c35818f93a40d3c30960d279b92a34b7a9230763805c3f56878343a5939f784"},"schema_version":"1.0"},"canonical_sha256":"b89798a9f71f693b530889d1b287d23fac2e5e8a2ec569e67bfd697eebb0e137","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:38:03.472152Z","signature_b64":"WPD+HcEb8XIZ6hK8eoinwE1Iz0WUooYuzN82DcrEYE8nS5/A4YoXtme1L9kMmXWoxw00TO/WoBv87ht0Q28ACA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b89798a9f71f693b530889d1b287d23fac2e5e8a2ec569e67bfd697eebb0e137","last_reissued_at":"2026-07-04T16:38:03.471737Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:38:03.471737Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0312577","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":"2026-07-04T16:38:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ngtHThP4aahiK5HOdsNwW9qqlaaR4o5fjqf/eWLRMBqoc3R/4wY6kNp5cAGXeTo/hw1KlAlUgAmdYGuE4clxAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T02:47:06.732736Z"},"content_sha256":"61c18692dd0fa0b6924e24a3bd6afa34cee97caaf37205211ab6c22a91ead2d4","schema_version":"1.0","event_id":"sha256:61c18692dd0fa0b6924e24a3bd6afa34cee97caaf37205211ab6c22a91ead2d4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2003:XCLZRKPXD5UTWUYIRHI3FB6SH6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Mass Transfer between Double White Dwarfs","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"D. Steeghs, G. Nelemans, T. R. Marsh","submitted_at":"2003-12-22T11:59:36Z","abstract_excerpt":"Three periodically variable stars have recently been discovered (V407 Vul, P=9.5 min; ES Cet, P=10.3 min; RX J0806.3+1527, P=5.3 min) with properties that suggest that their photometric periods are also their orbital periods, making them the most compact binary stars known. If true, this might indicate that close, detached, double white dwarfs are able to survive the onset of mass transfer caused by gravitational wave radiation and emerge as the semi-detached, hydrogen-deficient stars known as the AM CVn stars. The accreting white dwarfs in such systems are large compared to the orbital separa"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0312577","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/0312577/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":"2026-07-04T16:38:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cOjROEkKDj2zzvNiLX8MzZeMHNK3XUr0mopC21QiDQxK6pgd4EDbVa3vXSyJnYEq9maM0248zD2sVhkHigleCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T02:47:06.733287Z"},"content_sha256":"a09643fd5e15560b288ea03be988e38b3d2f54ef30c22f89a0a1dd3746ab5d26","schema_version":"1.0","event_id":"sha256:a09643fd5e15560b288ea03be988e38b3d2f54ef30c22f89a0a1dd3746ab5d26"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XCLZRKPXD5UTWUYIRHI3FB6SH6/bundle.json","state_url":"https://pith.science/pith/XCLZRKPXD5UTWUYIRHI3FB6SH6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XCLZRKPXD5UTWUYIRHI3FB6SH6/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":"2026-08-04T02:47:06Z","links":{"resolver":"https://pith.science/pith/XCLZRKPXD5UTWUYIRHI3FB6SH6","bundle":"https://pith.science/pith/XCLZRKPXD5UTWUYIRHI3FB6SH6/bundle.json","state":"https://pith.science/pith/XCLZRKPXD5UTWUYIRHI3FB6SH6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XCLZRKPXD5UTWUYIRHI3FB6SH6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2003:XCLZRKPXD5UTWUYIRHI3FB6SH6","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":"6c35818f93a40d3c30960d279b92a34b7a9230763805c3f56878343a5939f784","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2003-12-22T11:59:36Z","title_canon_sha256":"635b18033e0b5817220d409a4acf7239e12fc8c1e7b3f10b26d72df4ff7ccd59"},"schema_version":"1.0","source":{"id":"astro-ph/0312577","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0312577","created_at":"2026-07-04T16:38:03Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0312577v1","created_at":"2026-07-04T16:38:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0312577","created_at":"2026-07-04T16:38:03Z"},{"alias_kind":"pith_short_12","alias_value":"XCLZRKPXD5UT","created_at":"2026-07-04T16:38:03Z"},{"alias_kind":"pith_short_16","alias_value":"XCLZRKPXD5UTWUYI","created_at":"2026-07-04T16:38:03Z"},{"alias_kind":"pith_short_8","alias_value":"XCLZRKPX","created_at":"2026-07-04T16:38:03Z"}],"graph_snapshots":[{"event_id":"sha256:a09643fd5e15560b288ea03be988e38b3d2f54ef30c22f89a0a1dd3746ab5d26","target":"graph","created_at":"2026-07-04T16:38:03Z","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/0312577/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Three periodically variable stars have recently been discovered (V407 Vul, P=9.5 min; ES Cet, P=10.3 min; RX J0806.3+1527, P=5.3 min) with properties that suggest that their photometric periods are also their orbital periods, making them the most compact binary stars known. If true, this might indicate that close, detached, double white dwarfs are able to survive the onset of mass transfer caused by gravitational wave radiation and emerge as the semi-detached, hydrogen-deficient stars known as the AM CVn stars. The accreting white dwarfs in such systems are large compared to the orbital separa","authors_text":"D. Steeghs, G. Nelemans, T. R. Marsh","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2003-12-22T11:59:36Z","title":"Mass Transfer between Double White Dwarfs"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0312577","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":"sha256:61c18692dd0fa0b6924e24a3bd6afa34cee97caaf37205211ab6c22a91ead2d4","target":"record","created_at":"2026-07-04T16:38:03Z","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":"6c35818f93a40d3c30960d279b92a34b7a9230763805c3f56878343a5939f784","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2003-12-22T11:59:36Z","title_canon_sha256":"635b18033e0b5817220d409a4acf7239e12fc8c1e7b3f10b26d72df4ff7ccd59"},"schema_version":"1.0","source":{"id":"astro-ph/0312577","kind":"arxiv","version":1}},"canonical_sha256":"b89798a9f71f693b530889d1b287d23fac2e5e8a2ec569e67bfd697eebb0e137","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b89798a9f71f693b530889d1b287d23fac2e5e8a2ec569e67bfd697eebb0e137","first_computed_at":"2026-07-04T16:38:03.471737Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:38:03.471737Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"WPD+HcEb8XIZ6hK8eoinwE1Iz0WUooYuzN82DcrEYE8nS5/A4YoXtme1L9kMmXWoxw00TO/WoBv87ht0Q28ACA==","signature_status":"signed_v1","signed_at":"2026-07-04T16:38:03.472152Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0312577","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:61c18692dd0fa0b6924e24a3bd6afa34cee97caaf37205211ab6c22a91ead2d4","sha256:a09643fd5e15560b288ea03be988e38b3d2f54ef30c22f89a0a1dd3746ab5d26"],"state_sha256":"79e0f656fa4e3158549846b5ede2d20daacc05deb2f7334aa48f7dd631f929d3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TNC2VC5KRYa6iFNUveFIq97OfJ82LTK4cII1KAM0v1a1i4lp/K5GW+QmdyjLDsDSPicMoY3eTvL8hrhJoSOeBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T02:47:06.738889Z","bundle_sha256":"c6e28e86fa5730fc13d86329eb9eff94fe1ec9a9db9b95a8103f4156ec4ba6f4"}}