{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:SJKTKOV6SFZZZMJ2NLOGELAMAP","short_pith_number":"pith:SJKTKOV6","canonical_record":{"source":{"id":"2504.14332","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-04-19T15:53:01Z","cross_cats_sorted":["astro-ph.IM","astro-ph.SR"],"title_canon_sha256":"cc0306a5f0978f478343c7d12336db096bfb99769f4752c0c2905b0e19652045","abstract_canon_sha256":"bc39892985caad59f4752f92c4267224df4fffd303a6a8c6108bcc366e63904d"},"schema_version":"1.0"},"canonical_sha256":"9255353abe91739cb13a6adc622c0c03d8b2c05786321196dd4c118f267236f0","source":{"kind":"arxiv","id":"2504.14332","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2504.14332","created_at":"2026-07-05T10:51:41Z"},{"alias_kind":"arxiv_version","alias_value":"2504.14332v1","created_at":"2026-07-05T10:51:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2504.14332","created_at":"2026-07-05T10:51:41Z"},{"alias_kind":"pith_short_12","alias_value":"SJKTKOV6SFZZ","created_at":"2026-07-05T10:51:41Z"},{"alias_kind":"pith_short_16","alias_value":"SJKTKOV6SFZZZMJ2","created_at":"2026-07-05T10:51:41Z"},{"alias_kind":"pith_short_8","alias_value":"SJKTKOV6","created_at":"2026-07-05T10:51:41Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:SJKTKOV6SFZZZMJ2NLOGELAMAP","target":"record","payload":{"canonical_record":{"source":{"id":"2504.14332","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-04-19T15:53:01Z","cross_cats_sorted":["astro-ph.IM","astro-ph.SR"],"title_canon_sha256":"cc0306a5f0978f478343c7d12336db096bfb99769f4752c0c2905b0e19652045","abstract_canon_sha256":"bc39892985caad59f4752f92c4267224df4fffd303a6a8c6108bcc366e63904d"},"schema_version":"1.0"},"canonical_sha256":"9255353abe91739cb13a6adc622c0c03d8b2c05786321196dd4c118f267236f0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:51:41.949950Z","signature_b64":"gyCaqnQVpwdQVoh0Brp9N+LxWNtVJLl5FnpC+HbxfhRqdv4emEzSEc7mvZ+H18I5BTYTiH3niwYfwL6AdD7KCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9255353abe91739cb13a6adc622c0c03d8b2c05786321196dd4c118f267236f0","last_reissued_at":"2026-07-05T10:51:41.949481Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:51:41.949481Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2504.14332","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":"2026-07-05T10:51:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5VrdVdaHaIkLLHecpO8I7sDgp4s/quSHHcX+C52RbiABnjZLUaehGAfC4hBeqaGScb9GMe3MVja3cajm2q3BDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-02T10:09:50.349779Z"},"content_sha256":"2391ea45986db52f70307f3e9cb6596ec30e1cdde8055d3287ab726396c7af11","schema_version":"1.0","event_id":"sha256:2391ea45986db52f70307f3e9cb6596ec30e1cdde8055d3287ab726396c7af11"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:SJKTKOV6SFZZZMJ2NLOGELAMAP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Dusty stellar sources classification by implementing machine learning methods based on spectroscopic observations in the Magellanic Clouds","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM","astro-ph.SR"],"primary_cat":"astro-ph.GA","authors_text":"Amirhossein Masoudnezhad, Atefeh Javadi, Bernard Foing, Fatemeh Fazel, Habib Khosroshahi, Iain McDonald, Jacco van Loon, Joana Oliveira, Mahdi Abdollahi, Sepideh Ghaziasgar","submitted_at":"2025-04-19T15:53:01Z","abstract_excerpt":"Dusty stellar point sources are a significant stage in stellar evolution and contribute to the metal enrichment of galaxies. These objects can be classified using photometric and spectroscopic observations with color-magnitude diagrams (CMD) and infrared excesses in spectral energy distributions (SED). We employed supervised machine learning spectral classification to categorize dusty stellar sources, including young stellar objects (YSOs) and evolved stars (oxygen- and carbon-rich asymptotic giant branch stars, AGBs), red supergiants (RSGs), and post-AGB (PAGB) stars in the Large and Small Ma"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2504.14332","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/2504.14332/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":"2026-07-05T10:51:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"g5dqXQxK4u8nplMd2kGiOalOzUuRo8XewiSysmyOrRRU63hk2gu1N6GBigEs3f2bMSVp4saVuH+Ibs5r2IUSBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-02T10:09:50.350687Z"},"content_sha256":"41a0c4d4e7e46908bde02b30d326a77e3bd567cdc120b4b456cdea7702a7d3e4","schema_version":"1.0","event_id":"sha256:41a0c4d4e7e46908bde02b30d326a77e3bd567cdc120b4b456cdea7702a7d3e4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SJKTKOV6SFZZZMJ2NLOGELAMAP/bundle.json","state_url":"https://pith.science/pith/SJKTKOV6SFZZZMJ2NLOGELAMAP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SJKTKOV6SFZZZMJ2NLOGELAMAP/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":"2026-08-02T10:09:50Z","links":{"resolver":"https://pith.science/pith/SJKTKOV6SFZZZMJ2NLOGELAMAP","bundle":"https://pith.science/pith/SJKTKOV6SFZZZMJ2NLOGELAMAP/bundle.json","state":"https://pith.science/pith/SJKTKOV6SFZZZMJ2NLOGELAMAP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SJKTKOV6SFZZZMJ2NLOGELAMAP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:SJKTKOV6SFZZZMJ2NLOGELAMAP","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":"bc39892985caad59f4752f92c4267224df4fffd303a6a8c6108bcc366e63904d","cross_cats_sorted":["astro-ph.IM","astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-04-19T15:53:01Z","title_canon_sha256":"cc0306a5f0978f478343c7d12336db096bfb99769f4752c0c2905b0e19652045"},"schema_version":"1.0","source":{"id":"2504.14332","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2504.14332","created_at":"2026-07-05T10:51:41Z"},{"alias_kind":"arxiv_version","alias_value":"2504.14332v1","created_at":"2026-07-05T10:51:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2504.14332","created_at":"2026-07-05T10:51:41Z"},{"alias_kind":"pith_short_12","alias_value":"SJKTKOV6SFZZ","created_at":"2026-07-05T10:51:41Z"},{"alias_kind":"pith_short_16","alias_value":"SJKTKOV6SFZZZMJ2","created_at":"2026-07-05T10:51:41Z"},{"alias_kind":"pith_short_8","alias_value":"SJKTKOV6","created_at":"2026-07-05T10:51:41Z"}],"graph_snapshots":[{"event_id":"sha256:41a0c4d4e7e46908bde02b30d326a77e3bd567cdc120b4b456cdea7702a7d3e4","target":"graph","created_at":"2026-07-05T10:51:41Z","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/2504.14332/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Dusty stellar point sources are a significant stage in stellar evolution and contribute to the metal enrichment of galaxies. These objects can be classified using photometric and spectroscopic observations with color-magnitude diagrams (CMD) and infrared excesses in spectral energy distributions (SED). We employed supervised machine learning spectral classification to categorize dusty stellar sources, including young stellar objects (YSOs) and evolved stars (oxygen- and carbon-rich asymptotic giant branch stars, AGBs), red supergiants (RSGs), and post-AGB (PAGB) stars in the Large and Small Ma","authors_text":"Amirhossein Masoudnezhad, Atefeh Javadi, Bernard Foing, Fatemeh Fazel, Habib Khosroshahi, Iain McDonald, Jacco van Loon, Joana Oliveira, Mahdi Abdollahi, Sepideh Ghaziasgar","cross_cats":["astro-ph.IM","astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-04-19T15:53:01Z","title":"Dusty stellar sources classification by implementing machine learning methods based on spectroscopic observations in the Magellanic Clouds"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2504.14332","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":"sha256:2391ea45986db52f70307f3e9cb6596ec30e1cdde8055d3287ab726396c7af11","target":"record","created_at":"2026-07-05T10:51:41Z","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":"bc39892985caad59f4752f92c4267224df4fffd303a6a8c6108bcc366e63904d","cross_cats_sorted":["astro-ph.IM","astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-04-19T15:53:01Z","title_canon_sha256":"cc0306a5f0978f478343c7d12336db096bfb99769f4752c0c2905b0e19652045"},"schema_version":"1.0","source":{"id":"2504.14332","kind":"arxiv","version":1}},"canonical_sha256":"9255353abe91739cb13a6adc622c0c03d8b2c05786321196dd4c118f267236f0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9255353abe91739cb13a6adc622c0c03d8b2c05786321196dd4c118f267236f0","first_computed_at":"2026-07-05T10:51:41.949481Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:51:41.949481Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"gyCaqnQVpwdQVoh0Brp9N+LxWNtVJLl5FnpC+HbxfhRqdv4emEzSEc7mvZ+H18I5BTYTiH3niwYfwL6AdD7KCw==","signature_status":"signed_v1","signed_at":"2026-07-05T10:51:41.949950Z","signed_message":"canonical_sha256_bytes"},"source_id":"2504.14332","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2391ea45986db52f70307f3e9cb6596ec30e1cdde8055d3287ab726396c7af11","sha256:41a0c4d4e7e46908bde02b30d326a77e3bd567cdc120b4b456cdea7702a7d3e4"],"state_sha256":"863a1daecd47bdcc7e5a4f87f44f1acf31c701f7c9bf8851f5d4778cfbef03ba"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XNwb1x5SMkILRyEerrNnYJ4mDbv2cxJoiwDiCScmjx0S4kjqCDNx/Z6mqjNypDaiC8KR/UqNFrIobiFWqGIJAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-02T10:09:50.357053Z","bundle_sha256":"55b7ee1ee3422caf07cac7c683ca942d0c45e106825e0ef82a3696f97ce6e1ee"}}