{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:5TYO5AXV4CAQ5DPPVWKPRTSVME","short_pith_number":"pith:5TYO5AXV","canonical_record":{"source":{"id":"1408.5500","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-08-23T14:57:40Z","cross_cats_sorted":[],"title_canon_sha256":"63caf54b1a95849beea965368e1ead122ca697d58ee3ea4434cfa1c8cbf34622","abstract_canon_sha256":"4f5b216505e7b0218b7a1ea92ef1805e569a9855babce3c5faa7f41cbb56a1f0"},"schema_version":"1.0"},"canonical_sha256":"ecf0ee82f5e0810e8defad94f8ce556129299caec2d12cbd815236ef5ff714c6","source":{"kind":"arxiv","id":"1408.5500","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1408.5500","created_at":"2026-05-18T02:41:18Z"},{"alias_kind":"arxiv_version","alias_value":"1408.5500v1","created_at":"2026-05-18T02:41:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1408.5500","created_at":"2026-05-18T02:41:18Z"},{"alias_kind":"pith_short_12","alias_value":"5TYO5AXV4CAQ","created_at":"2026-05-18T12:28:16Z"},{"alias_kind":"pith_short_16","alias_value":"5TYO5AXV4CAQ5DPP","created_at":"2026-05-18T12:28:16Z"},{"alias_kind":"pith_short_8","alias_value":"5TYO5AXV","created_at":"2026-05-18T12:28:16Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:5TYO5AXV4CAQ5DPPVWKPRTSVME","target":"record","payload":{"canonical_record":{"source":{"id":"1408.5500","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-08-23T14:57:40Z","cross_cats_sorted":[],"title_canon_sha256":"63caf54b1a95849beea965368e1ead122ca697d58ee3ea4434cfa1c8cbf34622","abstract_canon_sha256":"4f5b216505e7b0218b7a1ea92ef1805e569a9855babce3c5faa7f41cbb56a1f0"},"schema_version":"1.0"},"canonical_sha256":"ecf0ee82f5e0810e8defad94f8ce556129299caec2d12cbd815236ef5ff714c6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:41:18.355434Z","signature_b64":"PkcMDdfXssHLq4RVXY9rOkBFR2S0YVGjDoeokrNWrZT2HEMzqis3ZSHvli/UC7YwFydLSLrVRWkN/4cmMt6IBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ecf0ee82f5e0810e8defad94f8ce556129299caec2d12cbd815236ef5ff714c6","last_reissued_at":"2026-05-18T02:41:18.354982Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:41:18.354982Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1408.5500","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":"2026-05-18T02:41:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"E7gMBdg3F65DNJC9gxy+9nip4L6vUZoKHX/oe/Xy+gaNAZ/dyJiBu19vLDugVTHzeJi5I+bSNOoxUhQcb6j2Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T07:04:17.773382Z"},"content_sha256":"3c1fac62be68f6d69ed28f205e9fe3d1b4a7fd434b0a4e2614ccd3c2fa2435c0","schema_version":"1.0","event_id":"sha256:3c1fac62be68f6d69ed28f205e9fe3d1b4a7fd434b0a4e2614ccd3c2fa2435c0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:5TYO5AXV4CAQ5DPPVWKPRTSVME","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Post-merger evolution of carbon-oxygen + helium white dwarf binaries and the origin of R Coronae Borealis and extreme helium stars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"C. Simon Jeffery, Xianfei Zhang, Xuefei Chen, Zhanwen Han","submitted_at":"2014-08-23T14:57:40Z","abstract_excerpt":"Orbital decay by gravitational-wave radiation will cause some close-binary white dwarfs (WDs) to merge within a Hubble time. The results from previous hydrodynamical WD-merger simulations have been used to guide calculations of the post-merger evolution of carbon-oxygen + helium (CO+He) WD binaries. Our models include the formation of a hot corona in addition to a Keplerian disk. We introduce a 'destroyeddisk' model to simulate the effect of direct disk ingestion into the expanding envelope. These calculations indicate significant lifetimes in the domain of the rare R Coronae Borealis (RCB) st"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1408.5500","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":"2026-05-18T02:41:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Stxdvc9PUnSahNne5CF3mvK+K3XnAktjxV2nPTBPPDOUaIeeosKj9c7wD3Yr6KsG9Pwh4xD9C4VgPND7fW2KAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T07:04:17.774057Z"},"content_sha256":"106eef78c5f9a3854d0fe1706177c0c9d7b17617f6eb3fcb3318ecb92da737f1","schema_version":"1.0","event_id":"sha256:106eef78c5f9a3854d0fe1706177c0c9d7b17617f6eb3fcb3318ecb92da737f1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5TYO5AXV4CAQ5DPPVWKPRTSVME/bundle.json","state_url":"https://pith.science/pith/5TYO5AXV4CAQ5DPPVWKPRTSVME/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5TYO5AXV4CAQ5DPPVWKPRTSVME/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":"2026-05-26T07:04:17Z","links":{"resolver":"https://pith.science/pith/5TYO5AXV4CAQ5DPPVWKPRTSVME","bundle":"https://pith.science/pith/5TYO5AXV4CAQ5DPPVWKPRTSVME/bundle.json","state":"https://pith.science/pith/5TYO5AXV4CAQ5DPPVWKPRTSVME/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5TYO5AXV4CAQ5DPPVWKPRTSVME/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:5TYO5AXV4CAQ5DPPVWKPRTSVME","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":"4f5b216505e7b0218b7a1ea92ef1805e569a9855babce3c5faa7f41cbb56a1f0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-08-23T14:57:40Z","title_canon_sha256":"63caf54b1a95849beea965368e1ead122ca697d58ee3ea4434cfa1c8cbf34622"},"schema_version":"1.0","source":{"id":"1408.5500","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1408.5500","created_at":"2026-05-18T02:41:18Z"},{"alias_kind":"arxiv_version","alias_value":"1408.5500v1","created_at":"2026-05-18T02:41:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1408.5500","created_at":"2026-05-18T02:41:18Z"},{"alias_kind":"pith_short_12","alias_value":"5TYO5AXV4CAQ","created_at":"2026-05-18T12:28:16Z"},{"alias_kind":"pith_short_16","alias_value":"5TYO5AXV4CAQ5DPP","created_at":"2026-05-18T12:28:16Z"},{"alias_kind":"pith_short_8","alias_value":"5TYO5AXV","created_at":"2026-05-18T12:28:16Z"}],"graph_snapshots":[{"event_id":"sha256:106eef78c5f9a3854d0fe1706177c0c9d7b17617f6eb3fcb3318ecb92da737f1","target":"graph","created_at":"2026-05-18T02:41:18Z","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":"Orbital decay by gravitational-wave radiation will cause some close-binary white dwarfs (WDs) to merge within a Hubble time. The results from previous hydrodynamical WD-merger simulations have been used to guide calculations of the post-merger evolution of carbon-oxygen + helium (CO+He) WD binaries. Our models include the formation of a hot corona in addition to a Keplerian disk. We introduce a 'destroyeddisk' model to simulate the effect of direct disk ingestion into the expanding envelope. These calculations indicate significant lifetimes in the domain of the rare R Coronae Borealis (RCB) st","authors_text":"C. Simon Jeffery, Xianfei Zhang, Xuefei Chen, Zhanwen Han","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-08-23T14:57:40Z","title":"Post-merger evolution of carbon-oxygen + helium white dwarf binaries and the origin of R Coronae Borealis and extreme helium stars"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1408.5500","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":"sha256:3c1fac62be68f6d69ed28f205e9fe3d1b4a7fd434b0a4e2614ccd3c2fa2435c0","target":"record","created_at":"2026-05-18T02:41:18Z","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":"4f5b216505e7b0218b7a1ea92ef1805e569a9855babce3c5faa7f41cbb56a1f0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-08-23T14:57:40Z","title_canon_sha256":"63caf54b1a95849beea965368e1ead122ca697d58ee3ea4434cfa1c8cbf34622"},"schema_version":"1.0","source":{"id":"1408.5500","kind":"arxiv","version":1}},"canonical_sha256":"ecf0ee82f5e0810e8defad94f8ce556129299caec2d12cbd815236ef5ff714c6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ecf0ee82f5e0810e8defad94f8ce556129299caec2d12cbd815236ef5ff714c6","first_computed_at":"2026-05-18T02:41:18.354982Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:41:18.354982Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"PkcMDdfXssHLq4RVXY9rOkBFR2S0YVGjDoeokrNWrZT2HEMzqis3ZSHvli/UC7YwFydLSLrVRWkN/4cmMt6IBw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:41:18.355434Z","signed_message":"canonical_sha256_bytes"},"source_id":"1408.5500","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3c1fac62be68f6d69ed28f205e9fe3d1b4a7fd434b0a4e2614ccd3c2fa2435c0","sha256:106eef78c5f9a3854d0fe1706177c0c9d7b17617f6eb3fcb3318ecb92da737f1"],"state_sha256":"9edc6845815fdae44559f7f2ab8d1128095fe6f05e4fa0c0901094bc35927fa8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"syfub+T+P4ei4nRmT0hUUm0syMi4lwcZOjwyiriK7+JyGALFAijlyD8UhCDzwIrf+VvPbHUM9qBjrA2VCS0dDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T07:04:17.778277Z","bundle_sha256":"c19a3dae84483d5e1da6a64700b3d163b9b93110cec54954cbdae5422b9e2347"}}