{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2002:W5GENJZ3T2YSC26MWXSR2SEUZ7","short_pith_number":"pith:W5GENJZ3","canonical_record":{"source":{"id":"astro-ph/0207570","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2002-07-26T01:45:31Z","cross_cats_sorted":[],"title_canon_sha256":"9cb9e212d38e9add193976b5c4001077e8a3b28002729989865570d6fba6758a","abstract_canon_sha256":"b4056fa23972f6853e5078bc9948c4e73418387946c3ad0aa633add7da9e9c96"},"schema_version":"1.0"},"canonical_sha256":"b74c46a73b9eb1216bccb5e51d4894cfcaffe617670bfefb2b87410f4a628134","source":{"kind":"arxiv","id":"astro-ph/0207570","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0207570","created_at":"2026-05-18T04:27:05Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0207570v1","created_at":"2026-05-18T04:27:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0207570","created_at":"2026-05-18T04:27:05Z"},{"alias_kind":"pith_short_12","alias_value":"W5GENJZ3T2YS","created_at":"2026-05-18T12:25:51Z"},{"alias_kind":"pith_short_16","alias_value":"W5GENJZ3T2YSC26M","created_at":"2026-05-18T12:25:51Z"},{"alias_kind":"pith_short_8","alias_value":"W5GENJZ3","created_at":"2026-05-18T12:25:51Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2002:W5GENJZ3T2YSC26MWXSR2SEUZ7","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0207570","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2002-07-26T01:45:31Z","cross_cats_sorted":[],"title_canon_sha256":"9cb9e212d38e9add193976b5c4001077e8a3b28002729989865570d6fba6758a","abstract_canon_sha256":"b4056fa23972f6853e5078bc9948c4e73418387946c3ad0aa633add7da9e9c96"},"schema_version":"1.0"},"canonical_sha256":"b74c46a73b9eb1216bccb5e51d4894cfcaffe617670bfefb2b87410f4a628134","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:27:05.127107Z","signature_b64":"7Qb+a5PVjDDocSkzYoGyb6clUboaF9zXh5hXtZH+k52fagNBrvZQ4OmIoX62cKMnJMhAkATkMEj8zd5DB+HlDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b74c46a73b9eb1216bccb5e51d4894cfcaffe617670bfefb2b87410f4a628134","last_reissued_at":"2026-05-18T04:27:05.124143Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:27:05.124143Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0207570","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":"2026-05-18T04:27:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"X+uByJL8vexu5vxY40MHJS5eGsHBnoF7MDpixU+vJbfx3zHW+zH2Abh3sp0isJPy2u7JXFo72kCFxmcQwJsHBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T17:57:21.942481Z"},"content_sha256":"c9073daceeff4a6806737ef98bdfb4120b352bc3b88102a3f93d0b0f302d6049","schema_version":"1.0","event_id":"sha256:c9073daceeff4a6806737ef98bdfb4120b352bc3b88102a3f93d0b0f302d6049"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2002:W5GENJZ3T2YSC26MWXSR2SEUZ7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Two massive star-forming regions at early evolutionary stages","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"(2) European Southern Observatory, (3) Australia Telescope National Facility, (4) University of New South Wales), Diego Mardones (1), Guido Garay (1), Kate Brooks (2), Michael G. Burton (4) ((1) Universidad de Chile, Ray P. Norris (3)","submitted_at":"2002-07-26T01:45:31Z","abstract_excerpt":"We report sensitive ATCA radio-continuum observations toward IRAS 15596-5301 and 16272-4837, two luminous objects (> 2x10^4 Lsun) thought to represent massive star-forming regions in early stages of evolution (due to previously undetected radio emission at the 1-sigma level of 2 mJy per beam). Also reported are 1.2-millimeter continuum and a series of molecular-line observations made with the SEST telescope. For IRAS 15596-5301, the observations reveal the presence of three distinct compact radio-continuum sources associated with a dense molecular core. We suggest that this core contains a clu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0207570","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":"2026-05-18T04:27:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aV8c+9SjZgy8RjiQq4T+fQu71Qp8rQkSoohVvRkge86U+LwHdiqyh8QMy4FDgm2K+EQRFcewRzKNmes/d8MICQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T17:57:21.943135Z"},"content_sha256":"80f7d069a7cef78ba627558356e9acf990cb6e145e6bb3d2d12f6d7156d18ca9","schema_version":"1.0","event_id":"sha256:80f7d069a7cef78ba627558356e9acf990cb6e145e6bb3d2d12f6d7156d18ca9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/W5GENJZ3T2YSC26MWXSR2SEUZ7/bundle.json","state_url":"https://pith.science/pith/W5GENJZ3T2YSC26MWXSR2SEUZ7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/W5GENJZ3T2YSC26MWXSR2SEUZ7/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":"2026-05-29T17:57:21Z","links":{"resolver":"https://pith.science/pith/W5GENJZ3T2YSC26MWXSR2SEUZ7","bundle":"https://pith.science/pith/W5GENJZ3T2YSC26MWXSR2SEUZ7/bundle.json","state":"https://pith.science/pith/W5GENJZ3T2YSC26MWXSR2SEUZ7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/W5GENJZ3T2YSC26MWXSR2SEUZ7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2002:W5GENJZ3T2YSC26MWXSR2SEUZ7","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":"b4056fa23972f6853e5078bc9948c4e73418387946c3ad0aa633add7da9e9c96","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2002-07-26T01:45:31Z","title_canon_sha256":"9cb9e212d38e9add193976b5c4001077e8a3b28002729989865570d6fba6758a"},"schema_version":"1.0","source":{"id":"astro-ph/0207570","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0207570","created_at":"2026-05-18T04:27:05Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0207570v1","created_at":"2026-05-18T04:27:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0207570","created_at":"2026-05-18T04:27:05Z"},{"alias_kind":"pith_short_12","alias_value":"W5GENJZ3T2YS","created_at":"2026-05-18T12:25:51Z"},{"alias_kind":"pith_short_16","alias_value":"W5GENJZ3T2YSC26M","created_at":"2026-05-18T12:25:51Z"},{"alias_kind":"pith_short_8","alias_value":"W5GENJZ3","created_at":"2026-05-18T12:25:51Z"}],"graph_snapshots":[{"event_id":"sha256:80f7d069a7cef78ba627558356e9acf990cb6e145e6bb3d2d12f6d7156d18ca9","target":"graph","created_at":"2026-05-18T04:27:05Z","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 sensitive ATCA radio-continuum observations toward IRAS 15596-5301 and 16272-4837, two luminous objects (> 2x10^4 Lsun) thought to represent massive star-forming regions in early stages of evolution (due to previously undetected radio emission at the 1-sigma level of 2 mJy per beam). Also reported are 1.2-millimeter continuum and a series of molecular-line observations made with the SEST telescope. For IRAS 15596-5301, the observations reveal the presence of three distinct compact radio-continuum sources associated with a dense molecular core. We suggest that this core contains a clu","authors_text":"(2) European Southern Observatory, (3) Australia Telescope National Facility, (4) University of New South Wales), Diego Mardones (1), Guido Garay (1), Kate Brooks (2), Michael G. Burton (4) ((1) Universidad de Chile, Ray P. Norris (3)","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2002-07-26T01:45:31Z","title":"Two massive star-forming regions at early evolutionary stages"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0207570","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:c9073daceeff4a6806737ef98bdfb4120b352bc3b88102a3f93d0b0f302d6049","target":"record","created_at":"2026-05-18T04:27:05Z","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":"b4056fa23972f6853e5078bc9948c4e73418387946c3ad0aa633add7da9e9c96","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2002-07-26T01:45:31Z","title_canon_sha256":"9cb9e212d38e9add193976b5c4001077e8a3b28002729989865570d6fba6758a"},"schema_version":"1.0","source":{"id":"astro-ph/0207570","kind":"arxiv","version":1}},"canonical_sha256":"b74c46a73b9eb1216bccb5e51d4894cfcaffe617670bfefb2b87410f4a628134","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b74c46a73b9eb1216bccb5e51d4894cfcaffe617670bfefb2b87410f4a628134","first_computed_at":"2026-05-18T04:27:05.124143Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:27:05.124143Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"7Qb+a5PVjDDocSkzYoGyb6clUboaF9zXh5hXtZH+k52fagNBrvZQ4OmIoX62cKMnJMhAkATkMEj8zd5DB+HlDg==","signature_status":"signed_v1","signed_at":"2026-05-18T04:27:05.127107Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0207570","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c9073daceeff4a6806737ef98bdfb4120b352bc3b88102a3f93d0b0f302d6049","sha256:80f7d069a7cef78ba627558356e9acf990cb6e145e6bb3d2d12f6d7156d18ca9"],"state_sha256":"1e5e78fef82342826e9a91378ac938fbd9e5c7904c209819b48e34f866a6c0c7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"H24pFORnjxShbdNNK6PZKSA7tDWY4eztlMybFB21kXe3b6V+F0Pmf+3pISKI8ubA/xBamkluu18k6vS3L8BABQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-29T17:57:21.946244Z","bundle_sha256":"5873866ec22672a027af3a8beb3cdf048025386c5e3db7951ec14e0773e1aab1"}}