{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:L2J6UWLLEAB7UM2PWRKEXTF7UF","short_pith_number":"pith:L2J6UWLL","canonical_record":{"source":{"id":"1603.08385","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-03-28T14:13:14Z","cross_cats_sorted":[],"title_canon_sha256":"2fa2c148653bef9ef39c0822caa7b6895ea8bc7cf5dab176894419f469834c52","abstract_canon_sha256":"be7cd17f9e8a0218e9d48368a30be67e226512c7943e65f87b7e1fd8a352bde7"},"schema_version":"1.0"},"canonical_sha256":"5e93ea596b2003fa334fb4544bccbfa15274590780e0a7fc33caea3f552dbf31","source":{"kind":"arxiv","id":"1603.08385","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1603.08385","created_at":"2026-05-18T01:13:53Z"},{"alias_kind":"arxiv_version","alias_value":"1603.08385v1","created_at":"2026-05-18T01:13:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1603.08385","created_at":"2026-05-18T01:13:53Z"},{"alias_kind":"pith_short_12","alias_value":"L2J6UWLLEAB7","created_at":"2026-05-18T12:30:29Z"},{"alias_kind":"pith_short_16","alias_value":"L2J6UWLLEAB7UM2P","created_at":"2026-05-18T12:30:29Z"},{"alias_kind":"pith_short_8","alias_value":"L2J6UWLL","created_at":"2026-05-18T12:30:29Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:L2J6UWLLEAB7UM2PWRKEXTF7UF","target":"record","payload":{"canonical_record":{"source":{"id":"1603.08385","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-03-28T14:13:14Z","cross_cats_sorted":[],"title_canon_sha256":"2fa2c148653bef9ef39c0822caa7b6895ea8bc7cf5dab176894419f469834c52","abstract_canon_sha256":"be7cd17f9e8a0218e9d48368a30be67e226512c7943e65f87b7e1fd8a352bde7"},"schema_version":"1.0"},"canonical_sha256":"5e93ea596b2003fa334fb4544bccbfa15274590780e0a7fc33caea3f552dbf31","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:13:53.561724Z","signature_b64":"5AEKpxIEaKEhxoI1q3rWItMKaqPPouZ8Ij54y0ZyXKyP8OLRWvCi2J+OSdmd9zFaidpL+0bFEn6SlDeINi/ZCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5e93ea596b2003fa334fb4544bccbfa15274590780e0a7fc33caea3f552dbf31","last_reissued_at":"2026-05-18T01:13:53.561247Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:13:53.561247Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1603.08385","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":"2026-05-18T01:13:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"klmjepyO4vBSzBlr5RK6WI2FH3GQrwwD7xoTMKYJYgYY5ONKeYkKj4HXD10Z1xF3utaRpi5oU8m715GeNUMVBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T22:29:37.978936Z"},"content_sha256":"17e6cee34148f580275b9a23fae1192055ba2f86931362d38c07fa9b0c8b76d0","schema_version":"1.0","event_id":"sha256:17e6cee34148f580275b9a23fae1192055ba2f86931362d38c07fa9b0c8b76d0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:L2J6UWLLEAB7UM2PWRKEXTF7UF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Coeval intermediate-mass star formation in N4W","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Jungmi Kwon, Miaomiao Zhang, Motohide Tamura, Shaobo Zhang, Zhibo Jiang, Zhiwei Chen","submitted_at":"2016-03-28T14:13:14Z","abstract_excerpt":"Protostars are mostly found in star-forming regions, where the natal molecular gas still remains. In about 5' west of the molecular bubble N4, N4W is identified as a star-forming clump hosting three Class II (IRS\\,1\\,--\\,3), and one Class I (IRS\\,4) young stellar objects (YSOs), as well as a submillimeter source SMM1. The near-IR polarization imaging data of N4W reveal two infrared reflection nebulae close to each other, which are in favor of the outflows of IRS\\,1 and IRS\\,2. The bipolar mid-IR emission centered on IRS\\,4 and the arc-like molecular gas shell are lying on the same axis, indica"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1603.08385","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":"2026-05-18T01:13:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Cx8pUYZ3spZJcPeaUG5xTWu+r3CJL37mxxksr3UvPWmFcv6m6iVeTwzGQJ7wJEhXvb/cXHl49smhHN2EjGLhDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T22:29:37.979627Z"},"content_sha256":"d11ef1a339d32cbe9d3e0cef0291719f1610d9f9cd78df7f9717d83663d12bba","schema_version":"1.0","event_id":"sha256:d11ef1a339d32cbe9d3e0cef0291719f1610d9f9cd78df7f9717d83663d12bba"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/L2J6UWLLEAB7UM2PWRKEXTF7UF/bundle.json","state_url":"https://pith.science/pith/L2J6UWLLEAB7UM2PWRKEXTF7UF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/L2J6UWLLEAB7UM2PWRKEXTF7UF/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":"2026-05-30T22:29:37Z","links":{"resolver":"https://pith.science/pith/L2J6UWLLEAB7UM2PWRKEXTF7UF","bundle":"https://pith.science/pith/L2J6UWLLEAB7UM2PWRKEXTF7UF/bundle.json","state":"https://pith.science/pith/L2J6UWLLEAB7UM2PWRKEXTF7UF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/L2J6UWLLEAB7UM2PWRKEXTF7UF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:L2J6UWLLEAB7UM2PWRKEXTF7UF","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":"be7cd17f9e8a0218e9d48368a30be67e226512c7943e65f87b7e1fd8a352bde7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-03-28T14:13:14Z","title_canon_sha256":"2fa2c148653bef9ef39c0822caa7b6895ea8bc7cf5dab176894419f469834c52"},"schema_version":"1.0","source":{"id":"1603.08385","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1603.08385","created_at":"2026-05-18T01:13:53Z"},{"alias_kind":"arxiv_version","alias_value":"1603.08385v1","created_at":"2026-05-18T01:13:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1603.08385","created_at":"2026-05-18T01:13:53Z"},{"alias_kind":"pith_short_12","alias_value":"L2J6UWLLEAB7","created_at":"2026-05-18T12:30:29Z"},{"alias_kind":"pith_short_16","alias_value":"L2J6UWLLEAB7UM2P","created_at":"2026-05-18T12:30:29Z"},{"alias_kind":"pith_short_8","alias_value":"L2J6UWLL","created_at":"2026-05-18T12:30:29Z"}],"graph_snapshots":[{"event_id":"sha256:d11ef1a339d32cbe9d3e0cef0291719f1610d9f9cd78df7f9717d83663d12bba","target":"graph","created_at":"2026-05-18T01:13:53Z","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":"Protostars are mostly found in star-forming regions, where the natal molecular gas still remains. In about 5' west of the molecular bubble N4, N4W is identified as a star-forming clump hosting three Class II (IRS\\,1\\,--\\,3), and one Class I (IRS\\,4) young stellar objects (YSOs), as well as a submillimeter source SMM1. The near-IR polarization imaging data of N4W reveal two infrared reflection nebulae close to each other, which are in favor of the outflows of IRS\\,1 and IRS\\,2. The bipolar mid-IR emission centered on IRS\\,4 and the arc-like molecular gas shell are lying on the same axis, indica","authors_text":"Jungmi Kwon, Miaomiao Zhang, Motohide Tamura, Shaobo Zhang, Zhibo Jiang, Zhiwei Chen","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-03-28T14:13:14Z","title":"Coeval intermediate-mass star formation in N4W"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1603.08385","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":"sha256:17e6cee34148f580275b9a23fae1192055ba2f86931362d38c07fa9b0c8b76d0","target":"record","created_at":"2026-05-18T01:13:53Z","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":"be7cd17f9e8a0218e9d48368a30be67e226512c7943e65f87b7e1fd8a352bde7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-03-28T14:13:14Z","title_canon_sha256":"2fa2c148653bef9ef39c0822caa7b6895ea8bc7cf5dab176894419f469834c52"},"schema_version":"1.0","source":{"id":"1603.08385","kind":"arxiv","version":1}},"canonical_sha256":"5e93ea596b2003fa334fb4544bccbfa15274590780e0a7fc33caea3f552dbf31","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5e93ea596b2003fa334fb4544bccbfa15274590780e0a7fc33caea3f552dbf31","first_computed_at":"2026-05-18T01:13:53.561247Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:13:53.561247Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"5AEKpxIEaKEhxoI1q3rWItMKaqPPouZ8Ij54y0ZyXKyP8OLRWvCi2J+OSdmd9zFaidpL+0bFEn6SlDeINi/ZCw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:13:53.561724Z","signed_message":"canonical_sha256_bytes"},"source_id":"1603.08385","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:17e6cee34148f580275b9a23fae1192055ba2f86931362d38c07fa9b0c8b76d0","sha256:d11ef1a339d32cbe9d3e0cef0291719f1610d9f9cd78df7f9717d83663d12bba"],"state_sha256":"91b8a8362f6e16c3217b9823109c90118848f1f0b26bbfac606ea3763b31cd1c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+xWcbNpMvEL6/Z9VjWfSsLjTO4JpAno8B7pZEBa2hq+1HJDAKUW0ECW92AFwKG3RtF7YZJkrJcV7qBW5tAPeBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T22:29:37.984482Z","bundle_sha256":"baaaa778d96275364137f23183b3d97c04e4e479a6d6529efdf05844d2a44521"}}