{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2005:PZCDQIN62WH5OQIUBCUPFCJBR5","short_pith_number":"pith:PZCDQIN6","canonical_record":{"source":{"id":"astro-ph/0512266","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2005-12-10T16:37:03Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"00a3746b7362b9e0c526de757b1a26989af1061383a1df172e9f8b6abed866a7","abstract_canon_sha256":"e48aaf6fc1f81f68b8af1eddb6b5bb4a13e78b35fdc2c90c3ba7fa21922fae7c"},"schema_version":"1.0"},"canonical_sha256":"7e443821bed58fd7411408a8f289218f61b68bbdcad1b4a16a98d442d61b0a5a","source":{"kind":"arxiv","id":"astro-ph/0512266","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0512266","created_at":"2026-05-18T00:12:58Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0512266v1","created_at":"2026-05-18T00:12:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0512266","created_at":"2026-05-18T00:12:58Z"},{"alias_kind":"pith_short_12","alias_value":"PZCDQIN62WH5","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_16","alias_value":"PZCDQIN62WH5OQIU","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_8","alias_value":"PZCDQIN6","created_at":"2026-05-18T12:25:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2005:PZCDQIN62WH5OQIUBCUPFCJBR5","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0512266","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2005-12-10T16:37:03Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"00a3746b7362b9e0c526de757b1a26989af1061383a1df172e9f8b6abed866a7","abstract_canon_sha256":"e48aaf6fc1f81f68b8af1eddb6b5bb4a13e78b35fdc2c90c3ba7fa21922fae7c"},"schema_version":"1.0"},"canonical_sha256":"7e443821bed58fd7411408a8f289218f61b68bbdcad1b4a16a98d442d61b0a5a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:12:58.998147Z","signature_b64":"kCoU/emD7LNxZBZvGRYORMtnQEEvJTzCRmkqLnsHbauAnpKTUPKEqoBflFifyjSXTW657wU3hisTgUM7h2mqDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7e443821bed58fd7411408a8f289218f61b68bbdcad1b4a16a98d442d61b0a5a","last_reissued_at":"2026-05-18T00:12:58.997678Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:12:58.997678Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0512266","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":"2026-05-18T00:12:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Mia116iVd9BJgHBWXCta7iEwA3EsPuab59mmnhwi5gAmOoAMJIE7AhoWEvIZheeaW12v75GfcCWFq1wlC2W1BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T15:02:43.711434Z"},"content_sha256":"598fda780996ae52690d2436dd032d71572b47e7bdf5ec28cae6ead294c5f8d8","schema_version":"1.0","event_id":"sha256:598fda780996ae52690d2436dd032d71572b47e7bdf5ec28cae6ead294c5f8d8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2005:PZCDQIN62WH5OQIUBCUPFCJBR5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Youngest Stellar clusters Clusters associated with massive protostellar candidates","license":"","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph","authors_text":"E. Clerkin, E. Keto, M. S. N. Kumar","submitted_at":"2005-12-10T16:37:03Z","abstract_excerpt":"We report on the identification of 54 embedded clusters around 217 massive protostellar candidates of which 34 clusters are new detections. The embedded clusters are identified as stellar surface density enhancements in the 2 $\\mu$m All Sky Survey (2MASS) data. Because the clusters are all associated with massive stars in their earliest evolutionary stage, the clusters should also be in an early stage of evolution. Thus the properties of these clusters should reflect properties associated with their formation rather than their evolution. For each cluster, we estimate the mass, the morphologica"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0512266","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":""},"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":"2026-05-18T00:12:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Zk3q0WcSmWxT6FP5Niz/OFQUC4eExrbpE1OHEGjAxwodVz5rPdBN9hf/e2FtrE3EWbcG6Yw0ybD/gWKlDRT7AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T15:02:43.712100Z"},"content_sha256":"2c224fd6fbc197309f3cfb15af68b26e2ff7c2de7bd0c41d49f87c151933f614","schema_version":"1.0","event_id":"sha256:2c224fd6fbc197309f3cfb15af68b26e2ff7c2de7bd0c41d49f87c151933f614"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PZCDQIN62WH5OQIUBCUPFCJBR5/bundle.json","state_url":"https://pith.science/pith/PZCDQIN62WH5OQIUBCUPFCJBR5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PZCDQIN62WH5OQIUBCUPFCJBR5/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":"2026-05-27T15:02:43Z","links":{"resolver":"https://pith.science/pith/PZCDQIN62WH5OQIUBCUPFCJBR5","bundle":"https://pith.science/pith/PZCDQIN62WH5OQIUBCUPFCJBR5/bundle.json","state":"https://pith.science/pith/PZCDQIN62WH5OQIUBCUPFCJBR5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PZCDQIN62WH5OQIUBCUPFCJBR5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2005:PZCDQIN62WH5OQIUBCUPFCJBR5","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":"e48aaf6fc1f81f68b8af1eddb6b5bb4a13e78b35fdc2c90c3ba7fa21922fae7c","cross_cats_sorted":["astro-ph.SR"],"license":"","primary_cat":"astro-ph","submitted_at":"2005-12-10T16:37:03Z","title_canon_sha256":"00a3746b7362b9e0c526de757b1a26989af1061383a1df172e9f8b6abed866a7"},"schema_version":"1.0","source":{"id":"astro-ph/0512266","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0512266","created_at":"2026-05-18T00:12:58Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0512266v1","created_at":"2026-05-18T00:12:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0512266","created_at":"2026-05-18T00:12:58Z"},{"alias_kind":"pith_short_12","alias_value":"PZCDQIN62WH5","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_16","alias_value":"PZCDQIN62WH5OQIU","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_8","alias_value":"PZCDQIN6","created_at":"2026-05-18T12:25:53Z"}],"graph_snapshots":[{"event_id":"sha256:2c224fd6fbc197309f3cfb15af68b26e2ff7c2de7bd0c41d49f87c151933f614","target":"graph","created_at":"2026-05-18T00:12:58Z","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 report on the identification of 54 embedded clusters around 217 massive protostellar candidates of which 34 clusters are new detections. The embedded clusters are identified as stellar surface density enhancements in the 2 $\\mu$m All Sky Survey (2MASS) data. Because the clusters are all associated with massive stars in their earliest evolutionary stage, the clusters should also be in an early stage of evolution. Thus the properties of these clusters should reflect properties associated with their formation rather than their evolution. For each cluster, we estimate the mass, the morphologica","authors_text":"E. Clerkin, E. Keto, M. S. N. Kumar","cross_cats":["astro-ph.SR"],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2005-12-10T16:37:03Z","title":"The Youngest Stellar clusters Clusters associated with massive protostellar candidates"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0512266","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":"sha256:598fda780996ae52690d2436dd032d71572b47e7bdf5ec28cae6ead294c5f8d8","target":"record","created_at":"2026-05-18T00:12:58Z","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":"e48aaf6fc1f81f68b8af1eddb6b5bb4a13e78b35fdc2c90c3ba7fa21922fae7c","cross_cats_sorted":["astro-ph.SR"],"license":"","primary_cat":"astro-ph","submitted_at":"2005-12-10T16:37:03Z","title_canon_sha256":"00a3746b7362b9e0c526de757b1a26989af1061383a1df172e9f8b6abed866a7"},"schema_version":"1.0","source":{"id":"astro-ph/0512266","kind":"arxiv","version":1}},"canonical_sha256":"7e443821bed58fd7411408a8f289218f61b68bbdcad1b4a16a98d442d61b0a5a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7e443821bed58fd7411408a8f289218f61b68bbdcad1b4a16a98d442d61b0a5a","first_computed_at":"2026-05-18T00:12:58.997678Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:12:58.997678Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"kCoU/emD7LNxZBZvGRYORMtnQEEvJTzCRmkqLnsHbauAnpKTUPKEqoBflFifyjSXTW657wU3hisTgUM7h2mqDA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:12:58.998147Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0512266","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:598fda780996ae52690d2436dd032d71572b47e7bdf5ec28cae6ead294c5f8d8","sha256:2c224fd6fbc197309f3cfb15af68b26e2ff7c2de7bd0c41d49f87c151933f614"],"state_sha256":"eaf02ae172ca969cc90038fb850737bf4a579f2fa525f8d2ad2021e719aa4042"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eSaOPS4qTjRADo6Djxzt06maLSXecDf8UAcgRslC5ShgTNgLJOSFnF+gBHkcYXgrk6hKtpY5kqOmPMaVXXUSCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T15:02:43.715104Z","bundle_sha256":"d892fe7ec89fae608e87df7203e1f2f61a2b5f044df7565d6805b4de981f1ea1"}}