{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2007:XSMPC5RJEOYDMUKVAJEB5WMHK4","short_pith_number":"pith:XSMPC5RJ","canonical_record":{"source":{"id":"astro-ph/0702137","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2007-02-06T00:07:37Z","cross_cats_sorted":[],"title_canon_sha256":"3b1f0b6bfac9db7ac9d80882b26a7e537689beb4f50147cfcac360069f89cc8f","abstract_canon_sha256":"f01337933181f115ca075095510e946398e189b8bd497e4c4fda2784911a3698"},"schema_version":"1.0"},"canonical_sha256":"bc98f1762923b036515502481ed987573557503dc9ef2d6189d9d7f746149d53","source":{"kind":"arxiv","id":"astro-ph/0702137","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0702137","created_at":"2026-07-04T17:07:37Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0702137v1","created_at":"2026-07-04T17:07:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0702137","created_at":"2026-07-04T17:07:37Z"},{"alias_kind":"pith_short_12","alias_value":"XSMPC5RJEOYD","created_at":"2026-07-04T17:07:37Z"},{"alias_kind":"pith_short_16","alias_value":"XSMPC5RJEOYDMUKV","created_at":"2026-07-04T17:07:37Z"},{"alias_kind":"pith_short_8","alias_value":"XSMPC5RJ","created_at":"2026-07-04T17:07:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2007:XSMPC5RJEOYDMUKVAJEB5WMHK4","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0702137","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2007-02-06T00:07:37Z","cross_cats_sorted":[],"title_canon_sha256":"3b1f0b6bfac9db7ac9d80882b26a7e537689beb4f50147cfcac360069f89cc8f","abstract_canon_sha256":"f01337933181f115ca075095510e946398e189b8bd497e4c4fda2784911a3698"},"schema_version":"1.0"},"canonical_sha256":"bc98f1762923b036515502481ed987573557503dc9ef2d6189d9d7f746149d53","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T17:07:37.596924Z","signature_b64":"6+ILSLFINvRTj0xJ2brAAPbG5hgwzQO2h/oB8q7pivSluROy7reN9/j6slUezoL7dE2hw1F+5ZFigO9ToFrlAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bc98f1762923b036515502481ed987573557503dc9ef2d6189d9d7f746149d53","last_reissued_at":"2026-07-04T17:07:37.596508Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T17:07:37.596508Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0702137","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":"2026-07-04T17:07:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9AOHCHUHkFgCqFFUcIfxFLqKWHfJKD9JC65iCleHpwDaTC9ulCOCxJubOTQvXuszTSbulY6rtemaWMFYabsQDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-02T17:58:16.652713Z"},"content_sha256":"9e86179cc1b7cb382a66303e9bc70716c8cb41808b268256380e266720aa598d","schema_version":"1.0","event_id":"sha256:9e86179cc1b7cb382a66303e9bc70716c8cb41808b268256380e266720aa598d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2007:XSMPC5RJEOYDMUKVAJEB5WMHK4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Formation & evolution of the Galactic bulge: constraints from stellar abundances","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Francesca Matteucci, Livia Origlia, R. Michael Rich, Silvia K. Ballero","submitted_at":"2007-02-06T00:07:37Z","abstract_excerpt":"We compute the chemical evolution of the Galactic bulge in the context of an inside-out model for the formation of the Milky Way. The model contains updated stellar yields from massive stars. The main purpose of the paper is to compare the predictions of this model with new observations of chemical abundance ratios and metallicity distributions in order to put constraints on the formation and evolution of the bulge. We computed the evolution of several alpha-elements and Fe and performed several tests by varying different parameters such as star formation efficiency, slope of the initial mass "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0702137","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/0702137/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":"2026-07-04T17:07:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9xOXQ5Lw+7Y8ZLsj4JX+TSowEhA4oZ7dqtboyNLoCaujc7Tpj8xxSl1o3h6KH4scnkNxWklsGzf/kdU80QoUAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-02T17:58:16.653190Z"},"content_sha256":"cb8d5b3dfa8ca100b4944cea74b7d026633ad91c14f0e2da17626568697dccd0","schema_version":"1.0","event_id":"sha256:cb8d5b3dfa8ca100b4944cea74b7d026633ad91c14f0e2da17626568697dccd0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XSMPC5RJEOYDMUKVAJEB5WMHK4/bundle.json","state_url":"https://pith.science/pith/XSMPC5RJEOYDMUKVAJEB5WMHK4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XSMPC5RJEOYDMUKVAJEB5WMHK4/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":"2026-08-02T17:58:16Z","links":{"resolver":"https://pith.science/pith/XSMPC5RJEOYDMUKVAJEB5WMHK4","bundle":"https://pith.science/pith/XSMPC5RJEOYDMUKVAJEB5WMHK4/bundle.json","state":"https://pith.science/pith/XSMPC5RJEOYDMUKVAJEB5WMHK4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XSMPC5RJEOYDMUKVAJEB5WMHK4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2007:XSMPC5RJEOYDMUKVAJEB5WMHK4","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":"f01337933181f115ca075095510e946398e189b8bd497e4c4fda2784911a3698","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2007-02-06T00:07:37Z","title_canon_sha256":"3b1f0b6bfac9db7ac9d80882b26a7e537689beb4f50147cfcac360069f89cc8f"},"schema_version":"1.0","source":{"id":"astro-ph/0702137","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0702137","created_at":"2026-07-04T17:07:37Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0702137v1","created_at":"2026-07-04T17:07:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0702137","created_at":"2026-07-04T17:07:37Z"},{"alias_kind":"pith_short_12","alias_value":"XSMPC5RJEOYD","created_at":"2026-07-04T17:07:37Z"},{"alias_kind":"pith_short_16","alias_value":"XSMPC5RJEOYDMUKV","created_at":"2026-07-04T17:07:37Z"},{"alias_kind":"pith_short_8","alias_value":"XSMPC5RJ","created_at":"2026-07-04T17:07:37Z"}],"graph_snapshots":[{"event_id":"sha256:cb8d5b3dfa8ca100b4944cea74b7d026633ad91c14f0e2da17626568697dccd0","target":"graph","created_at":"2026-07-04T17:07:37Z","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/0702137/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We compute the chemical evolution of the Galactic bulge in the context of an inside-out model for the formation of the Milky Way. The model contains updated stellar yields from massive stars. The main purpose of the paper is to compare the predictions of this model with new observations of chemical abundance ratios and metallicity distributions in order to put constraints on the formation and evolution of the bulge. We computed the evolution of several alpha-elements and Fe and performed several tests by varying different parameters such as star formation efficiency, slope of the initial mass ","authors_text":"Francesca Matteucci, Livia Origlia, R. Michael Rich, Silvia K. Ballero","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2007-02-06T00:07:37Z","title":"Formation & evolution of the Galactic bulge: constraints from stellar abundances"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0702137","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":"sha256:9e86179cc1b7cb382a66303e9bc70716c8cb41808b268256380e266720aa598d","target":"record","created_at":"2026-07-04T17:07:37Z","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":"f01337933181f115ca075095510e946398e189b8bd497e4c4fda2784911a3698","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2007-02-06T00:07:37Z","title_canon_sha256":"3b1f0b6bfac9db7ac9d80882b26a7e537689beb4f50147cfcac360069f89cc8f"},"schema_version":"1.0","source":{"id":"astro-ph/0702137","kind":"arxiv","version":1}},"canonical_sha256":"bc98f1762923b036515502481ed987573557503dc9ef2d6189d9d7f746149d53","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bc98f1762923b036515502481ed987573557503dc9ef2d6189d9d7f746149d53","first_computed_at":"2026-07-04T17:07:37.596508Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T17:07:37.596508Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"6+ILSLFINvRTj0xJ2brAAPbG5hgwzQO2h/oB8q7pivSluROy7reN9/j6slUezoL7dE2hw1F+5ZFigO9ToFrlAg==","signature_status":"signed_v1","signed_at":"2026-07-04T17:07:37.596924Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0702137","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9e86179cc1b7cb382a66303e9bc70716c8cb41808b268256380e266720aa598d","sha256:cb8d5b3dfa8ca100b4944cea74b7d026633ad91c14f0e2da17626568697dccd0"],"state_sha256":"32c61fa219d24df89578aad3c211aee03faa0da87e013ab80a9b85edc0260346"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FFhg/W5IWnnu7xqZH5OYO3jiiklIKjpzVEF/ds53iEU45SjejRUDRZ/aF0hmL9lzwVXCjDE6Q6McTiQ5rH1QDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-02T17:58:16.656351Z","bundle_sha256":"e801a9a068ec7125113343c580bdedb6cb2229de0e54368a315e704bc0dd443f"}}