{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2000:RJN6YHLYOG4OQ6I4AP5BOX3NS5","short_pith_number":"pith:RJN6YHLY","canonical_record":{"source":{"id":"astro-ph/0010457","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2000-10-23T16:23:33Z","cross_cats_sorted":[],"title_canon_sha256":"93d34319c44e78b2aad3fe9fef545bafb5c9d9f3c3ad2a74c633750eb99a18cd","abstract_canon_sha256":"4afa48cb4a46b4491d359a2cc71a85e7c389961d60abe16b60ffbc012477457c"},"schema_version":"1.0"},"canonical_sha256":"8a5bec1d7871b8e8791c03fa175f6d9779414a68074be181efeefcd8aa4e73cb","source":{"kind":"arxiv","id":"astro-ph/0010457","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0010457","created_at":"2026-07-04T17:22:36Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0010457v1","created_at":"2026-07-04T17:22:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0010457","created_at":"2026-07-04T17:22:36Z"},{"alias_kind":"pith_short_12","alias_value":"RJN6YHLYOG4O","created_at":"2026-07-04T17:22:36Z"},{"alias_kind":"pith_short_16","alias_value":"RJN6YHLYOG4OQ6I4","created_at":"2026-07-04T17:22:36Z"},{"alias_kind":"pith_short_8","alias_value":"RJN6YHLY","created_at":"2026-07-04T17:22:36Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2000:RJN6YHLYOG4OQ6I4AP5BOX3NS5","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0010457","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2000-10-23T16:23:33Z","cross_cats_sorted":[],"title_canon_sha256":"93d34319c44e78b2aad3fe9fef545bafb5c9d9f3c3ad2a74c633750eb99a18cd","abstract_canon_sha256":"4afa48cb4a46b4491d359a2cc71a85e7c389961d60abe16b60ffbc012477457c"},"schema_version":"1.0"},"canonical_sha256":"8a5bec1d7871b8e8791c03fa175f6d9779414a68074be181efeefcd8aa4e73cb","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T17:22:36.253933Z","signature_b64":"12Mk5l1dltjuV70+IaVE7bDEMq3njhvTHjU02XGF3+KAICOLQuDBcnTiG3dpyhAFEwFHr7SRLxhpZWJpCkFMAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8a5bec1d7871b8e8791c03fa175f6d9779414a68074be181efeefcd8aa4e73cb","last_reissued_at":"2026-07-04T17:22:36.253578Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T17:22:36.253578Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0010457","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":"2026-07-04T17:22:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BM5P4zh562nM/H8qZwEmqcea0ixRtp8hcThgh4Sdncv0jbsjc3CZosbSPeuk7WKQb3gnbep3qwv8RyVXl28gDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T14:54:59.410057Z"},"content_sha256":"195685d9ba9f7e0c3dccc7a6d13a850377750d3b06139b051dede1502c82fbd7","schema_version":"1.0","event_id":"sha256:195685d9ba9f7e0c3dccc7a6d13a850377750d3b06139b051dede1502c82fbd7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2000:RJN6YHLYOG4OQ6I4AP5BOX3NS5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Population synthesis for double white dwarfs I.Close detached systems","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Frank Verbunt, Gijs Nelemans, Lev R. Yungelson, Simon F. Portegies Zwart","submitted_at":"2000-10-23T16:23:33Z","abstract_excerpt":"We model the population of double white dwarfs in the Galaxy and find a better agreement with observations compared to earlier studies, due to two modifications. The first is the treatment of the first phase of unstable mass transfer and the second the modelling of the cooling of the white dwarfs. A satisfactory agreement with observations of the local sample of white dwarfs is achieved if we assume that the initial binary fraction is ~ 50% and that the lowest mass white dwarfs (M < 0.3 Msun) cool faster than the most recently published cooling models predict. With this model we find a Galacti"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0010457","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/0010457/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":"2026-07-04T17:22:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"M5MrKwXRMmnv+brXaACYfhmr5UazXyUq5xLEt81Z6TlRqy03zwpNUELZI910Z+GbYzALoZU3Fo246DmRAOkEDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T14:54:59.410663Z"},"content_sha256":"17301b2fc3b59dfefc8826207a8bd14e767c84da52a02a07f6b630d337532c8f","schema_version":"1.0","event_id":"sha256:17301b2fc3b59dfefc8826207a8bd14e767c84da52a02a07f6b630d337532c8f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RJN6YHLYOG4OQ6I4AP5BOX3NS5/bundle.json","state_url":"https://pith.science/pith/RJN6YHLYOG4OQ6I4AP5BOX3NS5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RJN6YHLYOG4OQ6I4AP5BOX3NS5/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":"2026-08-04T14:54:59Z","links":{"resolver":"https://pith.science/pith/RJN6YHLYOG4OQ6I4AP5BOX3NS5","bundle":"https://pith.science/pith/RJN6YHLYOG4OQ6I4AP5BOX3NS5/bundle.json","state":"https://pith.science/pith/RJN6YHLYOG4OQ6I4AP5BOX3NS5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RJN6YHLYOG4OQ6I4AP5BOX3NS5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2000:RJN6YHLYOG4OQ6I4AP5BOX3NS5","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":"4afa48cb4a46b4491d359a2cc71a85e7c389961d60abe16b60ffbc012477457c","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2000-10-23T16:23:33Z","title_canon_sha256":"93d34319c44e78b2aad3fe9fef545bafb5c9d9f3c3ad2a74c633750eb99a18cd"},"schema_version":"1.0","source":{"id":"astro-ph/0010457","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0010457","created_at":"2026-07-04T17:22:36Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0010457v1","created_at":"2026-07-04T17:22:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0010457","created_at":"2026-07-04T17:22:36Z"},{"alias_kind":"pith_short_12","alias_value":"RJN6YHLYOG4O","created_at":"2026-07-04T17:22:36Z"},{"alias_kind":"pith_short_16","alias_value":"RJN6YHLYOG4OQ6I4","created_at":"2026-07-04T17:22:36Z"},{"alias_kind":"pith_short_8","alias_value":"RJN6YHLY","created_at":"2026-07-04T17:22:36Z"}],"graph_snapshots":[{"event_id":"sha256:17301b2fc3b59dfefc8826207a8bd14e767c84da52a02a07f6b630d337532c8f","target":"graph","created_at":"2026-07-04T17:22:36Z","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/0010457/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We model the population of double white dwarfs in the Galaxy and find a better agreement with observations compared to earlier studies, due to two modifications. The first is the treatment of the first phase of unstable mass transfer and the second the modelling of the cooling of the white dwarfs. A satisfactory agreement with observations of the local sample of white dwarfs is achieved if we assume that the initial binary fraction is ~ 50% and that the lowest mass white dwarfs (M < 0.3 Msun) cool faster than the most recently published cooling models predict. With this model we find a Galacti","authors_text":"Frank Verbunt, Gijs Nelemans, Lev R. Yungelson, Simon F. Portegies Zwart","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2000-10-23T16:23:33Z","title":"Population synthesis for double white dwarfs I.Close detached systems"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0010457","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":"sha256:195685d9ba9f7e0c3dccc7a6d13a850377750d3b06139b051dede1502c82fbd7","target":"record","created_at":"2026-07-04T17:22:36Z","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":"4afa48cb4a46b4491d359a2cc71a85e7c389961d60abe16b60ffbc012477457c","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2000-10-23T16:23:33Z","title_canon_sha256":"93d34319c44e78b2aad3fe9fef545bafb5c9d9f3c3ad2a74c633750eb99a18cd"},"schema_version":"1.0","source":{"id":"astro-ph/0010457","kind":"arxiv","version":1}},"canonical_sha256":"8a5bec1d7871b8e8791c03fa175f6d9779414a68074be181efeefcd8aa4e73cb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8a5bec1d7871b8e8791c03fa175f6d9779414a68074be181efeefcd8aa4e73cb","first_computed_at":"2026-07-04T17:22:36.253578Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T17:22:36.253578Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"12Mk5l1dltjuV70+IaVE7bDEMq3njhvTHjU02XGF3+KAICOLQuDBcnTiG3dpyhAFEwFHr7SRLxhpZWJpCkFMAg==","signature_status":"signed_v1","signed_at":"2026-07-04T17:22:36.253933Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0010457","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:195685d9ba9f7e0c3dccc7a6d13a850377750d3b06139b051dede1502c82fbd7","sha256:17301b2fc3b59dfefc8826207a8bd14e767c84da52a02a07f6b630d337532c8f"],"state_sha256":"fdbf2c17dac6d5fff7abc6b089ea5a47c0b4f03b03651bd34dbe5734731f1639"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ylbP7tBiWHHzpvJuq70fVlyJkjdoW4VW8sJYTmZPL63ih60gqsKIE7pSVQuGx3rLo1c6N6+HBxCIxSFhhNPuCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T14:54:59.414308Z","bundle_sha256":"81309efb6220f654ffc4fd7441c08c013775634d5485acaf5c0d25f00c814aea"}}