{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:N6FFTDOUGTWUSGKY6TD4G6GVHQ","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":"cfa2ed13f923227a552d2cba30245892cffa07c5af4aa5ab341eddf6039e1885","cross_cats_sorted":["astro-ph.CO","astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-09-28T23:23:25Z","title_canon_sha256":"5e561d5ec477a7c362bc60e59b88e25d5984227a21e409877e422b1f8d2669f9"},"schema_version":"1.0","source":{"id":"1509.08541","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1509.08541","created_at":"2026-05-18T01:05:45Z"},{"alias_kind":"arxiv_version","alias_value":"1509.08541v1","created_at":"2026-05-18T01:05:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1509.08541","created_at":"2026-05-18T01:05:45Z"},{"alias_kind":"pith_short_12","alias_value":"N6FFTDOUGTWU","created_at":"2026-05-18T12:29:32Z"},{"alias_kind":"pith_short_16","alias_value":"N6FFTDOUGTWUSGKY","created_at":"2026-05-18T12:29:32Z"},{"alias_kind":"pith_short_8","alias_value":"N6FFTDOU","created_at":"2026-05-18T12:29:32Z"}],"graph_snapshots":[{"event_id":"sha256:9faca73f7fb023dd878151d3247d3fab058ce1de28142b756766c263f04aed5e","target":"graph","created_at":"2026-05-18T01:05:45Z","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":"The populations of bright planetary nebulae in the discs of spirals appear to differ in their spectral properties from those in ellipticals and the bulges of spirals. The bright planetary nebulae from the bulge of the Milky Way are entirely compatible with those observed in the discs of spiral galaxies. The similarity might be explained if the bulge of the Milky Way evolved secularly from the disc, in which case the bulge should be regarded as a pseudo-bulge.","authors_text":"M. G. Richer, M. L. McCall","cross_cats":["astro-ph.CO","astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-09-28T23:23:25Z","title":"Several evolutionary channels for bright planetary nebulae"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1509.08541","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":"sha256:8e664559434035e332af300b2ee294f9d8bdfcbce9ce7c67d235d903c1367e17","target":"record","created_at":"2026-05-18T01:05:45Z","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":"cfa2ed13f923227a552d2cba30245892cffa07c5af4aa5ab341eddf6039e1885","cross_cats_sorted":["astro-ph.CO","astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-09-28T23:23:25Z","title_canon_sha256":"5e561d5ec477a7c362bc60e59b88e25d5984227a21e409877e422b1f8d2669f9"},"schema_version":"1.0","source":{"id":"1509.08541","kind":"arxiv","version":1}},"canonical_sha256":"6f8a598dd434ed491958f4c7c378d53c194e32ef7c7aab983061281adf14a280","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6f8a598dd434ed491958f4c7c378d53c194e32ef7c7aab983061281adf14a280","first_computed_at":"2026-05-18T01:05:45.936332Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:05:45.936332Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"WFeibpw6HXclRRqelSj50bOSG9d+ctPB9QxzGgZIkuYOsYKMuGdt9n5fv6ugHMhrjYaJ83vBHz0D0W+qiOj8CQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:05:45.936821Z","signed_message":"canonical_sha256_bytes"},"source_id":"1509.08541","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8e664559434035e332af300b2ee294f9d8bdfcbce9ce7c67d235d903c1367e17","sha256:9faca73f7fb023dd878151d3247d3fab058ce1de28142b756766c263f04aed5e"],"state_sha256":"bdc22df64ddc28af2435b8b548f1d0bee46182a36d69ad701c27f645f08a4a3f"}