{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2000:NJJH53IQY6NJCXRXDOFB5GRQQM","short_pith_number":"pith:NJJH53IQ","canonical_record":{"source":{"id":"astro-ph/0009157","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2000-09-11T13:06:41Z","cross_cats_sorted":[],"title_canon_sha256":"ab0875ddac236a84655fe0b6389b792aba9897bd3a76c6c8d2f14b137a7a0146","abstract_canon_sha256":"89b05e55da532d375fc26d9712908408eb15dffb447375c07aea80979ed05b75"},"schema_version":"1.0"},"canonical_sha256":"6a527eed10c79a915e371b8a1e9a3083171d6cda3ace7e9f1f22be89a77a1732","source":{"kind":"arxiv","id":"astro-ph/0009157","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0009157","created_at":"2026-07-04T16:17:08Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0009157v1","created_at":"2026-07-04T16:17:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0009157","created_at":"2026-07-04T16:17:08Z"},{"alias_kind":"pith_short_12","alias_value":"NJJH53IQY6NJ","created_at":"2026-07-04T16:17:08Z"},{"alias_kind":"pith_short_16","alias_value":"NJJH53IQY6NJCXRX","created_at":"2026-07-04T16:17:08Z"},{"alias_kind":"pith_short_8","alias_value":"NJJH53IQ","created_at":"2026-07-04T16:17:08Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2000:NJJH53IQY6NJCXRXDOFB5GRQQM","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0009157","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2000-09-11T13:06:41Z","cross_cats_sorted":[],"title_canon_sha256":"ab0875ddac236a84655fe0b6389b792aba9897bd3a76c6c8d2f14b137a7a0146","abstract_canon_sha256":"89b05e55da532d375fc26d9712908408eb15dffb447375c07aea80979ed05b75"},"schema_version":"1.0"},"canonical_sha256":"6a527eed10c79a915e371b8a1e9a3083171d6cda3ace7e9f1f22be89a77a1732","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:17:08.245911Z","signature_b64":"Yk5RvsjgRMImdQrvmroGUvxGQAupUmQyIMaLtTz4OC+NC+5tKfjuiwhETOS/UGQcjNuhn0XovhRe1fl9mDadBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6a527eed10c79a915e371b8a1e9a3083171d6cda3ace7e9f1f22be89a77a1732","last_reissued_at":"2026-07-04T16:17:08.245511Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:17:08.245511Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0009157","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":"2026-07-04T16:17:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qm8xIp3+QoBi7D8WbsXW5pva00pszAdhTRdzpoQPQsGe9JGFfFdEdbX7OkTkjxP7ukSmH7Nur6j+DitNyoXYDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T03:38:24.352122Z"},"content_sha256":"5edd7d2a80fa123ce03c7ce785c1ab78ecc5406c8c11f6f307d91cdc70b0a8dd","schema_version":"1.0","event_id":"sha256:5edd7d2a80fa123ce03c7ce785c1ab78ecc5406c8c11f6f307d91cdc70b0a8dd"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2000:NJJH53IQY6NJCXRXDOFB5GRQQM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Chemical abundances in the inner 5 kpc of the Galactic disk","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"D. J. Lennon, F.P. Keenan, K. A. Venn, P. L. Dufton, S. J. Smartt, W. R. J. Rolleston","submitted_at":"2000-09-11T13:06:41Z","abstract_excerpt":"High-resolution, high signal-to-noise spectral data are presented for four young B-type stars lying towards the Galactic Centre. Determination of their atmospheric parameters from their absorption line profiles, and uvby photometric measurement of the continua indicate that they are massive objects lying slightly out of the plane, and were probably born in the disk between 2.5-5 kpc from the Centre. We have carried out a detailed absolute and differential line-by-line abundance analyses of the four stars compared to two stars with very similar atmospheric parameters in the solar neighbourhood."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0009157","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/0009157/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":"2026-07-04T16:17:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4iaWs1mD9cvuP9zqrrq9DBK9zgziuYHYkutjXl2ZCfFK3NRP6dutxwmrX9DeLu/xajlw2ZAlYORVHhabxRahCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T03:38:24.353502Z"},"content_sha256":"7b96798e220353c32bc0d07a16a063812f29d15a2b983f60b5dfaa200efa35d9","schema_version":"1.0","event_id":"sha256:7b96798e220353c32bc0d07a16a063812f29d15a2b983f60b5dfaa200efa35d9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NJJH53IQY6NJCXRXDOFB5GRQQM/bundle.json","state_url":"https://pith.science/pith/NJJH53IQY6NJCXRXDOFB5GRQQM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NJJH53IQY6NJCXRXDOFB5GRQQM/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":"2026-08-11T03:38:24Z","links":{"resolver":"https://pith.science/pith/NJJH53IQY6NJCXRXDOFB5GRQQM","bundle":"https://pith.science/pith/NJJH53IQY6NJCXRXDOFB5GRQQM/bundle.json","state":"https://pith.science/pith/NJJH53IQY6NJCXRXDOFB5GRQQM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NJJH53IQY6NJCXRXDOFB5GRQQM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2000:NJJH53IQY6NJCXRXDOFB5GRQQM","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":"89b05e55da532d375fc26d9712908408eb15dffb447375c07aea80979ed05b75","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2000-09-11T13:06:41Z","title_canon_sha256":"ab0875ddac236a84655fe0b6389b792aba9897bd3a76c6c8d2f14b137a7a0146"},"schema_version":"1.0","source":{"id":"astro-ph/0009157","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0009157","created_at":"2026-07-04T16:17:08Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0009157v1","created_at":"2026-07-04T16:17:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0009157","created_at":"2026-07-04T16:17:08Z"},{"alias_kind":"pith_short_12","alias_value":"NJJH53IQY6NJ","created_at":"2026-07-04T16:17:08Z"},{"alias_kind":"pith_short_16","alias_value":"NJJH53IQY6NJCXRX","created_at":"2026-07-04T16:17:08Z"},{"alias_kind":"pith_short_8","alias_value":"NJJH53IQ","created_at":"2026-07-04T16:17:08Z"}],"graph_snapshots":[{"event_id":"sha256:7b96798e220353c32bc0d07a16a063812f29d15a2b983f60b5dfaa200efa35d9","target":"graph","created_at":"2026-07-04T16:17:08Z","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/0009157/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"High-resolution, high signal-to-noise spectral data are presented for four young B-type stars lying towards the Galactic Centre. Determination of their atmospheric parameters from their absorption line profiles, and uvby photometric measurement of the continua indicate that they are massive objects lying slightly out of the plane, and were probably born in the disk between 2.5-5 kpc from the Centre. We have carried out a detailed absolute and differential line-by-line abundance analyses of the four stars compared to two stars with very similar atmospheric parameters in the solar neighbourhood.","authors_text":"D. J. Lennon, F.P. Keenan, K. A. Venn, P. L. Dufton, S. J. Smartt, W. R. J. Rolleston","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2000-09-11T13:06:41Z","title":"Chemical abundances in the inner 5 kpc of the Galactic disk"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0009157","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":"sha256:5edd7d2a80fa123ce03c7ce785c1ab78ecc5406c8c11f6f307d91cdc70b0a8dd","target":"record","created_at":"2026-07-04T16:17:08Z","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":"89b05e55da532d375fc26d9712908408eb15dffb447375c07aea80979ed05b75","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2000-09-11T13:06:41Z","title_canon_sha256":"ab0875ddac236a84655fe0b6389b792aba9897bd3a76c6c8d2f14b137a7a0146"},"schema_version":"1.0","source":{"id":"astro-ph/0009157","kind":"arxiv","version":1}},"canonical_sha256":"6a527eed10c79a915e371b8a1e9a3083171d6cda3ace7e9f1f22be89a77a1732","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6a527eed10c79a915e371b8a1e9a3083171d6cda3ace7e9f1f22be89a77a1732","first_computed_at":"2026-07-04T16:17:08.245511Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:17:08.245511Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Yk5RvsjgRMImdQrvmroGUvxGQAupUmQyIMaLtTz4OC+NC+5tKfjuiwhETOS/UGQcjNuhn0XovhRe1fl9mDadBQ==","signature_status":"signed_v1","signed_at":"2026-07-04T16:17:08.245911Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0009157","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5edd7d2a80fa123ce03c7ce785c1ab78ecc5406c8c11f6f307d91cdc70b0a8dd","sha256:7b96798e220353c32bc0d07a16a063812f29d15a2b983f60b5dfaa200efa35d9"],"state_sha256":"47f6af9b39a29b5d3f8a8fb9b2178b172f7a2d0a4e2c783c99a005e627717b0a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NFmMoeTJX53c6eORD20AIq6T+Q+Z5FMVEXlLsWXeVGjUJ3TUcheD+/cG/XZPnFgSTcUH0YlKbiFOXfa4POfoAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-11T03:38:24.363200Z","bundle_sha256":"680aeca8eea32980aeeedfaa01078516369caa31d19d77df7003a12ed056975a"}}