{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2007:NZTZCMCCPKPFN5IMIUTAXYQ4FH","short_pith_number":"pith:NZTZCMCC","canonical_record":{"source":{"id":"0708.0198","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2007-08-01T17:02:53Z","cross_cats_sorted":[],"title_canon_sha256":"142103e052472888dc2e8a71d3af713c73ef79e493b5e97773bd586aa3110940","abstract_canon_sha256":"5fc98dad8501dffbef3c2a658ea3575213d7a4270363c34ad4b9462a60b7d3a0"},"schema_version":"1.0"},"canonical_sha256":"6e679130427a9e56f50c45260be21c29ca33980bfd6be1e6970ee3a2a0a099e2","source":{"kind":"arxiv","id":"0708.0198","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0708.0198","created_at":"2026-07-04T17:05:00Z"},{"alias_kind":"arxiv_version","alias_value":"0708.0198v1","created_at":"2026-07-04T17:05:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0708.0198","created_at":"2026-07-04T17:05:00Z"},{"alias_kind":"pith_short_12","alias_value":"NZTZCMCCPKPF","created_at":"2026-07-04T17:05:00Z"},{"alias_kind":"pith_short_16","alias_value":"NZTZCMCCPKPFN5IM","created_at":"2026-07-04T17:05:00Z"},{"alias_kind":"pith_short_8","alias_value":"NZTZCMCC","created_at":"2026-07-04T17:05:00Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2007:NZTZCMCCPKPFN5IMIUTAXYQ4FH","target":"record","payload":{"canonical_record":{"source":{"id":"0708.0198","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2007-08-01T17:02:53Z","cross_cats_sorted":[],"title_canon_sha256":"142103e052472888dc2e8a71d3af713c73ef79e493b5e97773bd586aa3110940","abstract_canon_sha256":"5fc98dad8501dffbef3c2a658ea3575213d7a4270363c34ad4b9462a60b7d3a0"},"schema_version":"1.0"},"canonical_sha256":"6e679130427a9e56f50c45260be21c29ca33980bfd6be1e6970ee3a2a0a099e2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T17:05:00.929581Z","signature_b64":"QBuuFrBRxuY/iYBITWvDAA0MMjOR75lFeN94TOFkuEASehxorwhR6hUBTOHnDaChGo1e7kEAr1LzspH4ZeRtCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6e679130427a9e56f50c45260be21c29ca33980bfd6be1e6970ee3a2a0a099e2","last_reissued_at":"2026-07-04T17:05:00.929138Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T17:05:00.929138Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0708.0198","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":"2026-07-04T17:05:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RciCK1lwMrZ/XDZ/ye335tH8brrC54IZQ0D44ImIF37TLYfZ3wQGTd0ooCFeouvKb4jlNjGJmXjN1YVeXiLCAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-01T16:31:15.128946Z"},"content_sha256":"3bc467bbbe9206c252d8c8273697fd2b79b610ee1d7f9d15e9e36554651fe25e","schema_version":"1.0","event_id":"sha256:3bc467bbbe9206c252d8c8273697fd2b79b610ee1d7f9d15e9e36554651fe25e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2007:NZTZCMCCPKPFN5IMIUTAXYQ4FH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Chemical Composition of an Extrasolar Minor Planet","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"(2) University of Kiel), B. Hansen (1), B. Zuckerman (1), C. Melis (1), D. Koester (2), M. Jura (1) ((1) UCLA","submitted_at":"2007-08-01T17:02:53Z","abstract_excerpt":"We report the relative abundances of 17 elements in the atmosphere of the white dwarf star GD 362, material that, very probably, was contained previously in a large asteroid or asteroids with composition similar to the Earth/Moon system. The asteroid may have once been part of a larger parent body not unlike one of the terrestrial planets of our solar system."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0708.0198","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/0708.0198/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":"2026-07-04T17:05:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vynEmZSM38QpqUyvy4jsQDZK+2nSIa3MWARplscF2FqjF44w60pJteTeq63xijI4bv00BtTkrjgbNp5Ka9ENBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-01T16:31:15.129621Z"},"content_sha256":"3b9b0a18cfd1d8af7a4da345880b4239cf08f3aa61b95f5424fdde8e1502d76c","schema_version":"1.0","event_id":"sha256:3b9b0a18cfd1d8af7a4da345880b4239cf08f3aa61b95f5424fdde8e1502d76c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NZTZCMCCPKPFN5IMIUTAXYQ4FH/bundle.json","state_url":"https://pith.science/pith/NZTZCMCCPKPFN5IMIUTAXYQ4FH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NZTZCMCCPKPFN5IMIUTAXYQ4FH/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":"2026-08-01T16:31:15Z","links":{"resolver":"https://pith.science/pith/NZTZCMCCPKPFN5IMIUTAXYQ4FH","bundle":"https://pith.science/pith/NZTZCMCCPKPFN5IMIUTAXYQ4FH/bundle.json","state":"https://pith.science/pith/NZTZCMCCPKPFN5IMIUTAXYQ4FH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NZTZCMCCPKPFN5IMIUTAXYQ4FH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2007:NZTZCMCCPKPFN5IMIUTAXYQ4FH","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":"5fc98dad8501dffbef3c2a658ea3575213d7a4270363c34ad4b9462a60b7d3a0","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2007-08-01T17:02:53Z","title_canon_sha256":"142103e052472888dc2e8a71d3af713c73ef79e493b5e97773bd586aa3110940"},"schema_version":"1.0","source":{"id":"0708.0198","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0708.0198","created_at":"2026-07-04T17:05:00Z"},{"alias_kind":"arxiv_version","alias_value":"0708.0198v1","created_at":"2026-07-04T17:05:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0708.0198","created_at":"2026-07-04T17:05:00Z"},{"alias_kind":"pith_short_12","alias_value":"NZTZCMCCPKPF","created_at":"2026-07-04T17:05:00Z"},{"alias_kind":"pith_short_16","alias_value":"NZTZCMCCPKPFN5IM","created_at":"2026-07-04T17:05:00Z"},{"alias_kind":"pith_short_8","alias_value":"NZTZCMCC","created_at":"2026-07-04T17:05:00Z"}],"graph_snapshots":[{"event_id":"sha256:3b9b0a18cfd1d8af7a4da345880b4239cf08f3aa61b95f5424fdde8e1502d76c","target":"graph","created_at":"2026-07-04T17:05:00Z","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/0708.0198/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We report the relative abundances of 17 elements in the atmosphere of the white dwarf star GD 362, material that, very probably, was contained previously in a large asteroid or asteroids with composition similar to the Earth/Moon system. The asteroid may have once been part of a larger parent body not unlike one of the terrestrial planets of our solar system.","authors_text":"(2) University of Kiel), B. Hansen (1), B. Zuckerman (1), C. Melis (1), D. Koester (2), M. Jura (1) ((1) UCLA","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2007-08-01T17:02:53Z","title":"The Chemical Composition of an Extrasolar Minor Planet"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0708.0198","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":"sha256:3bc467bbbe9206c252d8c8273697fd2b79b610ee1d7f9d15e9e36554651fe25e","target":"record","created_at":"2026-07-04T17:05:00Z","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":"5fc98dad8501dffbef3c2a658ea3575213d7a4270363c34ad4b9462a60b7d3a0","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2007-08-01T17:02:53Z","title_canon_sha256":"142103e052472888dc2e8a71d3af713c73ef79e493b5e97773bd586aa3110940"},"schema_version":"1.0","source":{"id":"0708.0198","kind":"arxiv","version":1}},"canonical_sha256":"6e679130427a9e56f50c45260be21c29ca33980bfd6be1e6970ee3a2a0a099e2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6e679130427a9e56f50c45260be21c29ca33980bfd6be1e6970ee3a2a0a099e2","first_computed_at":"2026-07-04T17:05:00.929138Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T17:05:00.929138Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"QBuuFrBRxuY/iYBITWvDAA0MMjOR75lFeN94TOFkuEASehxorwhR6hUBTOHnDaChGo1e7kEAr1LzspH4ZeRtCQ==","signature_status":"signed_v1","signed_at":"2026-07-04T17:05:00.929581Z","signed_message":"canonical_sha256_bytes"},"source_id":"0708.0198","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3bc467bbbe9206c252d8c8273697fd2b79b610ee1d7f9d15e9e36554651fe25e","sha256:3b9b0a18cfd1d8af7a4da345880b4239cf08f3aa61b95f5424fdde8e1502d76c"],"state_sha256":"de33813b64e2adb141bc44c3a0251b257bca9d3074ad495dcb88ad44e9609909"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ulfS8jR7mobYqSM1g/B8TPMdsGheemgpZRfqnw12KH1Yp7nstcGb0wqZdL1syCZLBEvqq+GQ7I3hOgdOWl5HDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-01T16:31:15.136760Z","bundle_sha256":"9281d8bd919b4160073cad1eb860fc37a1d5bd4b35bb089b675e56a2f8a80ddb"}}