{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:PLICZKVHKLVFNHDTO4PRHYMRZJ","short_pith_number":"pith:PLICZKVH","canonical_record":{"source":{"id":"1204.3628","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-04-16T20:00:04Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"49a032419c87b720d702c52556c1706d1cc5cb96d82253f045edf138a9dd9900","abstract_canon_sha256":"1dd129c85710f34bb2cf86b3f9278f506f7e60a2ba8a6a36528a150f615b0083"},"schema_version":"1.0"},"canonical_sha256":"7ad02caaa752ea569c73771f13e191ca5a25f50163b6544e78fa5118daa749ba","source":{"kind":"arxiv","id":"1204.3628","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1204.3628","created_at":"2026-05-18T01:57:51Z"},{"alias_kind":"arxiv_version","alias_value":"1204.3628v2","created_at":"2026-05-18T01:57:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1204.3628","created_at":"2026-05-18T01:57:51Z"},{"alias_kind":"pith_short_12","alias_value":"PLICZKVHKLVF","created_at":"2026-05-18T12:27:18Z"},{"alias_kind":"pith_short_16","alias_value":"PLICZKVHKLVFNHDT","created_at":"2026-05-18T12:27:18Z"},{"alias_kind":"pith_short_8","alias_value":"PLICZKVH","created_at":"2026-05-18T12:27:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:PLICZKVHKLVFNHDTO4PRHYMRZJ","target":"record","payload":{"canonical_record":{"source":{"id":"1204.3628","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-04-16T20:00:04Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"49a032419c87b720d702c52556c1706d1cc5cb96d82253f045edf138a9dd9900","abstract_canon_sha256":"1dd129c85710f34bb2cf86b3f9278f506f7e60a2ba8a6a36528a150f615b0083"},"schema_version":"1.0"},"canonical_sha256":"7ad02caaa752ea569c73771f13e191ca5a25f50163b6544e78fa5118daa749ba","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:57:51.821644Z","signature_b64":"Omj9PXGewfBx+Vu7GXes6vqmyAUPqa/7bN1WReMI0/sgKd/NpAuJIIQNaCI3E0oEXVpcv6ZoFz4tZs7dPVXOBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7ad02caaa752ea569c73771f13e191ca5a25f50163b6544e78fa5118daa749ba","last_reissued_at":"2026-05-18T01:57:51.821198Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:57:51.821198Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1204.3628","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":"2026-05-18T01:57:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4K4zPVNrRqa7YoiR4bdAjeVqf5jCi5ltPmacDugtQcU32zuKU3LU6rrGUnusKhG73MR1gTsseJ8EboIYT0JKBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T16:11:32.547561Z"},"content_sha256":"857f3f3feed6476ce7ae4cbe2df3210687659361ef771866d05d4e672c1c0fbc","schema_version":"1.0","event_id":"sha256:857f3f3feed6476ce7ae4cbe2df3210687659361ef771866d05d4e672c1c0fbc"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:PLICZKVHKLVFNHDTO4PRHYMRZJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The VLT-FLAMES Tarantula Survey IV: Candidates for isolated high-mass star formation in 30 Doradus","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.SR","authors_text":"A. de Koter, C. J. Evans, E. Bressert, G. Gr\\\"afener, H. Sana, J. Ma\\'iz Apell\\'aniz, J. M. Bestenlehner, J.M.D. Kruijssen, J. S. Vink, M. Cantiello, M. Gieles, N. Bastian, P. A. Crowther, R. J. Parker, S. N. Longmore, S. P. Goodwin, V. H\\'enault-Brunet, W. D. Taylor","submitted_at":"2012-04-16T20:00:04Z","abstract_excerpt":"Whether massive stars can occasionally form in relative isolation or if they require a large cluster of lower-mass stars around them is a key test in the differentiation of star formation theories as well as how the initial mass function of stars is sampled. Previous attempts to find O-type stars that formed in isolation were hindered by the possibility that such stars are merely runaways from clusters, i.e., their current isolation does not reflect their birth conditions. We introduce a new method to find O-type stars that are not affected by such a degeneracy. Using the VLT-FLAMES Tarantula "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1204.3628","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":"2026-05-18T01:57:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZuOS3QPf23zss7kDzxpg8CDiPQ72fquUnYmgNblOP7xZwZN2E7JT97nI5iZJa/pBQcHwGBlSC44Vfx76kSF8BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T16:11:32.547916Z"},"content_sha256":"eac5893b1a427a4765d7c8a351f63e82265fb0c7043743c1cbd786d060fa5359","schema_version":"1.0","event_id":"sha256:eac5893b1a427a4765d7c8a351f63e82265fb0c7043743c1cbd786d060fa5359"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PLICZKVHKLVFNHDTO4PRHYMRZJ/bundle.json","state_url":"https://pith.science/pith/PLICZKVHKLVFNHDTO4PRHYMRZJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PLICZKVHKLVFNHDTO4PRHYMRZJ/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":"2026-05-19T16:11:32Z","links":{"resolver":"https://pith.science/pith/PLICZKVHKLVFNHDTO4PRHYMRZJ","bundle":"https://pith.science/pith/PLICZKVHKLVFNHDTO4PRHYMRZJ/bundle.json","state":"https://pith.science/pith/PLICZKVHKLVFNHDTO4PRHYMRZJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PLICZKVHKLVFNHDTO4PRHYMRZJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:PLICZKVHKLVFNHDTO4PRHYMRZJ","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":"1dd129c85710f34bb2cf86b3f9278f506f7e60a2ba8a6a36528a150f615b0083","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-04-16T20:00:04Z","title_canon_sha256":"49a032419c87b720d702c52556c1706d1cc5cb96d82253f045edf138a9dd9900"},"schema_version":"1.0","source":{"id":"1204.3628","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1204.3628","created_at":"2026-05-18T01:57:51Z"},{"alias_kind":"arxiv_version","alias_value":"1204.3628v2","created_at":"2026-05-18T01:57:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1204.3628","created_at":"2026-05-18T01:57:51Z"},{"alias_kind":"pith_short_12","alias_value":"PLICZKVHKLVF","created_at":"2026-05-18T12:27:18Z"},{"alias_kind":"pith_short_16","alias_value":"PLICZKVHKLVFNHDT","created_at":"2026-05-18T12:27:18Z"},{"alias_kind":"pith_short_8","alias_value":"PLICZKVH","created_at":"2026-05-18T12:27:18Z"}],"graph_snapshots":[{"event_id":"sha256:eac5893b1a427a4765d7c8a351f63e82265fb0c7043743c1cbd786d060fa5359","target":"graph","created_at":"2026-05-18T01:57:51Z","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":"Whether massive stars can occasionally form in relative isolation or if they require a large cluster of lower-mass stars around them is a key test in the differentiation of star formation theories as well as how the initial mass function of stars is sampled. Previous attempts to find O-type stars that formed in isolation were hindered by the possibility that such stars are merely runaways from clusters, i.e., their current isolation does not reflect their birth conditions. We introduce a new method to find O-type stars that are not affected by such a degeneracy. Using the VLT-FLAMES Tarantula ","authors_text":"A. de Koter, C. J. Evans, E. Bressert, G. Gr\\\"afener, H. Sana, J. Ma\\'iz Apell\\'aniz, J. M. Bestenlehner, J.M.D. Kruijssen, J. S. Vink, M. Cantiello, M. Gieles, N. Bastian, P. A. Crowther, R. J. Parker, S. N. Longmore, S. P. Goodwin, V. H\\'enault-Brunet, W. D. Taylor","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-04-16T20:00:04Z","title":"The VLT-FLAMES Tarantula Survey IV: Candidates for isolated high-mass star formation in 30 Doradus"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1204.3628","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":"sha256:857f3f3feed6476ce7ae4cbe2df3210687659361ef771866d05d4e672c1c0fbc","target":"record","created_at":"2026-05-18T01:57:51Z","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":"1dd129c85710f34bb2cf86b3f9278f506f7e60a2ba8a6a36528a150f615b0083","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-04-16T20:00:04Z","title_canon_sha256":"49a032419c87b720d702c52556c1706d1cc5cb96d82253f045edf138a9dd9900"},"schema_version":"1.0","source":{"id":"1204.3628","kind":"arxiv","version":2}},"canonical_sha256":"7ad02caaa752ea569c73771f13e191ca5a25f50163b6544e78fa5118daa749ba","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7ad02caaa752ea569c73771f13e191ca5a25f50163b6544e78fa5118daa749ba","first_computed_at":"2026-05-18T01:57:51.821198Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:57:51.821198Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Omj9PXGewfBx+Vu7GXes6vqmyAUPqa/7bN1WReMI0/sgKd/NpAuJIIQNaCI3E0oEXVpcv6ZoFz4tZs7dPVXOBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:57:51.821644Z","signed_message":"canonical_sha256_bytes"},"source_id":"1204.3628","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:857f3f3feed6476ce7ae4cbe2df3210687659361ef771866d05d4e672c1c0fbc","sha256:eac5893b1a427a4765d7c8a351f63e82265fb0c7043743c1cbd786d060fa5359"],"state_sha256":"8047c5e43a6bfbef4a6f30acb67fb780b8a3ac081a7985b284fd7b2dd8c88e7d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"E8gIbkCI8mZ1+26pyX6xL9QPTccyD+7sMiMBIU2ocQpmeTgDXei97JJcXELHQfsZGTCzAOC4cWW/ybsOeVt1CA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-19T16:11:32.550165Z","bundle_sha256":"98fb2f341ac9c169ac58cd6d06c27f843f0263bfcf93d06b917afc80368145f0"}}