{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:2J36ILEUPJKMZSOAFKZUFUDLCC","short_pith_number":"pith:2J36ILEU","canonical_record":{"source":{"id":"1404.5158","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-04-21T10:16:26Z","cross_cats_sorted":[],"title_canon_sha256":"aa23b7fb9517e190f8393e2445089acb731e7a2101d7031d18b079e4fb8736cc","abstract_canon_sha256":"ddf387273776f24cb8712ed7e13f5a6b07ee55a413de4df266779f05575aaa68"},"schema_version":"1.0"},"canonical_sha256":"d277e42c947a54ccc9c02ab342d06b108f5f83100cf7409c8327a644d2625dae","source":{"kind":"arxiv","id":"1404.5158","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1404.5158","created_at":"2026-05-18T02:48:09Z"},{"alias_kind":"arxiv_version","alias_value":"1404.5158v2","created_at":"2026-05-18T02:48:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1404.5158","created_at":"2026-05-18T02:48:09Z"},{"alias_kind":"pith_short_12","alias_value":"2J36ILEUPJKM","created_at":"2026-05-18T12:28:11Z"},{"alias_kind":"pith_short_16","alias_value":"2J36ILEUPJKMZSOA","created_at":"2026-05-18T12:28:11Z"},{"alias_kind":"pith_short_8","alias_value":"2J36ILEU","created_at":"2026-05-18T12:28:11Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:2J36ILEUPJKMZSOAFKZUFUDLCC","target":"record","payload":{"canonical_record":{"source":{"id":"1404.5158","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-04-21T10:16:26Z","cross_cats_sorted":[],"title_canon_sha256":"aa23b7fb9517e190f8393e2445089acb731e7a2101d7031d18b079e4fb8736cc","abstract_canon_sha256":"ddf387273776f24cb8712ed7e13f5a6b07ee55a413de4df266779f05575aaa68"},"schema_version":"1.0"},"canonical_sha256":"d277e42c947a54ccc9c02ab342d06b108f5f83100cf7409c8327a644d2625dae","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:48:09.333299Z","signature_b64":"60WNaL3cuSYZNUOmK4jEXtioPyE84U9jSBGaY3dkY1n6ssnCD+IE2p4WxqQxyqyPmQkgohRazbTSP5GDciebDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d277e42c947a54ccc9c02ab342d06b108f5f83100cf7409c8327a644d2625dae","last_reissued_at":"2026-05-18T02:48:09.332669Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:48:09.332669Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1404.5158","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:48:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CoMIu2yES67+4HaLG62+EmHj3kMpuyIh5VpdCQ+ZvgtwsQYTdXna/3ckrozO9niUa0oAD5+dRMFY/wHcdIjACg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T23:14:11.975698Z"},"content_sha256":"0a9985a776c34289ca3afaa03b1bfa7ada93a74de7b70ba44e5b94516ff241f0","schema_version":"1.0","event_id":"sha256:0a9985a776c34289ca3afaa03b1bfa7ada93a74de7b70ba44e5b94516ff241f0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:2J36ILEUPJKMZSOAFKZUFUDLCC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Chemical abundances in Galactic planetary nebulae with Spitzer spectra","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"D. A. Garcia-Hernandez, S. K. Gorny","submitted_at":"2014-04-21T10:16:26Z","abstract_excerpt":"We present new low-resolution (R~800) optical spectra of 22 Galactic PNe with Spitzer spectra. These data are combined with recent optical spectroscopic data available in the literature to construct representative samples of compact (and presumably young) Galactic disc and bulge PNe with Spitzer spectra. Attending to the nature of the dust features seen in their Spitzer spectra, Galactic disc and bulge PNe are classified according to four major dust types (oxygen chemistry or OC, carbon chemistry or CC, double chemistry or DC, featureless or F) and subtypes (amorphous and crystalline, and alip"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1404.5158","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"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":"2026-05-18T02:48:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1G2+hGQp40EKGm/lQ5tdKjIZJzKRlVTL2Wyauomq7BWO2H8AliaMTOf/LQKNz1FzxaDGxNaDqYc4LlzIouNrDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T23:14:11.976051Z"},"content_sha256":"22e5c08a3b7d7bd6c1a35e5c7a01a4c2db05eb6511edd7931d9d4a8ca4a82d5c","schema_version":"1.0","event_id":"sha256:22e5c08a3b7d7bd6c1a35e5c7a01a4c2db05eb6511edd7931d9d4a8ca4a82d5c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2J36ILEUPJKMZSOAFKZUFUDLCC/bundle.json","state_url":"https://pith.science/pith/2J36ILEUPJKMZSOAFKZUFUDLCC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2J36ILEUPJKMZSOAFKZUFUDLCC/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":"2026-06-03T23:14:11Z","links":{"resolver":"https://pith.science/pith/2J36ILEUPJKMZSOAFKZUFUDLCC","bundle":"https://pith.science/pith/2J36ILEUPJKMZSOAFKZUFUDLCC/bundle.json","state":"https://pith.science/pith/2J36ILEUPJKMZSOAFKZUFUDLCC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2J36ILEUPJKMZSOAFKZUFUDLCC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:2J36ILEUPJKMZSOAFKZUFUDLCC","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":"ddf387273776f24cb8712ed7e13f5a6b07ee55a413de4df266779f05575aaa68","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-04-21T10:16:26Z","title_canon_sha256":"aa23b7fb9517e190f8393e2445089acb731e7a2101d7031d18b079e4fb8736cc"},"schema_version":"1.0","source":{"id":"1404.5158","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1404.5158","created_at":"2026-05-18T02:48:09Z"},{"alias_kind":"arxiv_version","alias_value":"1404.5158v2","created_at":"2026-05-18T02:48:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1404.5158","created_at":"2026-05-18T02:48:09Z"},{"alias_kind":"pith_short_12","alias_value":"2J36ILEUPJKM","created_at":"2026-05-18T12:28:11Z"},{"alias_kind":"pith_short_16","alias_value":"2J36ILEUPJKMZSOA","created_at":"2026-05-18T12:28:11Z"},{"alias_kind":"pith_short_8","alias_value":"2J36ILEU","created_at":"2026-05-18T12:28:11Z"}],"graph_snapshots":[{"event_id":"sha256:22e5c08a3b7d7bd6c1a35e5c7a01a4c2db05eb6511edd7931d9d4a8ca4a82d5c","target":"graph","created_at":"2026-05-18T02:48:09Z","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":"We present new low-resolution (R~800) optical spectra of 22 Galactic PNe with Spitzer spectra. These data are combined with recent optical spectroscopic data available in the literature to construct representative samples of compact (and presumably young) Galactic disc and bulge PNe with Spitzer spectra. Attending to the nature of the dust features seen in their Spitzer spectra, Galactic disc and bulge PNe are classified according to four major dust types (oxygen chemistry or OC, carbon chemistry or CC, double chemistry or DC, featureless or F) and subtypes (amorphous and crystalline, and alip","authors_text":"D. A. Garcia-Hernandez, S. K. Gorny","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-04-21T10:16:26Z","title":"Chemical abundances in Galactic planetary nebulae with Spitzer spectra"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1404.5158","kind":"arxiv","version":2},"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":"sha256:0a9985a776c34289ca3afaa03b1bfa7ada93a74de7b70ba44e5b94516ff241f0","target":"record","created_at":"2026-05-18T02:48:09Z","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":"ddf387273776f24cb8712ed7e13f5a6b07ee55a413de4df266779f05575aaa68","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-04-21T10:16:26Z","title_canon_sha256":"aa23b7fb9517e190f8393e2445089acb731e7a2101d7031d18b079e4fb8736cc"},"schema_version":"1.0","source":{"id":"1404.5158","kind":"arxiv","version":2}},"canonical_sha256":"d277e42c947a54ccc9c02ab342d06b108f5f83100cf7409c8327a644d2625dae","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d277e42c947a54ccc9c02ab342d06b108f5f83100cf7409c8327a644d2625dae","first_computed_at":"2026-05-18T02:48:09.332669Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:48:09.332669Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"60WNaL3cuSYZNUOmK4jEXtioPyE84U9jSBGaY3dkY1n6ssnCD+IE2p4WxqQxyqyPmQkgohRazbTSP5GDciebDA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:48:09.333299Z","signed_message":"canonical_sha256_bytes"},"source_id":"1404.5158","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0a9985a776c34289ca3afaa03b1bfa7ada93a74de7b70ba44e5b94516ff241f0","sha256:22e5c08a3b7d7bd6c1a35e5c7a01a4c2db05eb6511edd7931d9d4a8ca4a82d5c"],"state_sha256":"e8a119c7a967043bc45771b8e9c4bb1ee5a89e22b1d5cdcb0ccef90e095372ac"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+RV+1FPTm/IPt9r6WEbgwwro3WuCHBOuYvS/I2J9md37Ab3XNfKdc0VMA1RuCmj5k4EP/1GYHbbIZb3+R2gdCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T23:14:11.977998Z","bundle_sha256":"cfc054f4954f7c7182a7d554f1ab9f2b8b2c0c46e046aa8e3a9baac3fe744a56"}}