{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:H66NQBYLQB3FQMTEN6PMQP25NV","short_pith_number":"pith:H66NQBYL","canonical_record":{"source":{"id":"1108.0916","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-08-03T19:15:08Z","cross_cats_sorted":[],"title_canon_sha256":"400da830692a5439361d0c014589ac110fb4ccf4fb8bb5a904bdcaa724f290e9","abstract_canon_sha256":"e00e4105aa977f840c10392adcdf106e520bfde86472732092bb61dcc4e50196"},"schema_version":"1.0"},"canonical_sha256":"3fbcd8070b80765832646f9ec83f5d6d5229dc90be28618d672d39eceec282c8","source":{"kind":"arxiv","id":"1108.0916","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1108.0916","created_at":"2026-05-18T02:01:03Z"},{"alias_kind":"arxiv_version","alias_value":"1108.0916v1","created_at":"2026-05-18T02:01:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1108.0916","created_at":"2026-05-18T02:01:03Z"},{"alias_kind":"pith_short_12","alias_value":"H66NQBYLQB3F","created_at":"2026-05-18T12:26:30Z"},{"alias_kind":"pith_short_16","alias_value":"H66NQBYLQB3FQMTE","created_at":"2026-05-18T12:26:30Z"},{"alias_kind":"pith_short_8","alias_value":"H66NQBYL","created_at":"2026-05-18T12:26:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:H66NQBYLQB3FQMTEN6PMQP25NV","target":"record","payload":{"canonical_record":{"source":{"id":"1108.0916","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-08-03T19:15:08Z","cross_cats_sorted":[],"title_canon_sha256":"400da830692a5439361d0c014589ac110fb4ccf4fb8bb5a904bdcaa724f290e9","abstract_canon_sha256":"e00e4105aa977f840c10392adcdf106e520bfde86472732092bb61dcc4e50196"},"schema_version":"1.0"},"canonical_sha256":"3fbcd8070b80765832646f9ec83f5d6d5229dc90be28618d672d39eceec282c8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:01:03.366953Z","signature_b64":"xQjQ4JQeYsuxPMPMCHwNfyREodZ2l40iN4tBrSFVDScFrV7wObF8jZJRc9I7I8rsBzXf5GQypI6hYafSG4wuCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3fbcd8070b80765832646f9ec83f5d6d5229dc90be28618d672d39eceec282c8","last_reissued_at":"2026-05-18T02:01:03.366267Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:01:03.366267Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1108.0916","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":"2026-05-18T02:01:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0byTT5YZgkxflJfQzzxiwaWd+m1gSLbtLWxWKJCPma1PVhm2S61kbT8nkbU2sPtbhJ006ZdHiHjZJ3NdFVcfCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T03:48:46.955776Z"},"content_sha256":"25e16e5aec437e81705e37057de0394585c543723b56a5549b52d4b06e2c7467","schema_version":"1.0","event_id":"sha256:25e16e5aec437e81705e37057de0394585c543723b56a5549b52d4b06e2c7467"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:H66NQBYLQB3FQMTEN6PMQP25NV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Sagittarius B2 Main: A Cluster of Ultra-Compact HII Regions and Massive Protostellar Cores","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Jun-Hui Zhao, M. C. H. Wright","submitted_at":"2011-08-03T19:15:08Z","abstract_excerpt":"The ionized core in the Sgr B2 Main star-forming region was imaged using the Submillimeter Array archival data observed for the H26$\\alpha$ line and continuum emission at 0.86 millimeter with an angular resolution 0.3\\arcsec. Eight hyper-compact H26$\\alpha$ emission sources were detected with a typical size in the range of 1.6--20$\\times10^2$ AU and electron density of 0.3--3$\\times10^7$ cm$^{-3}$, corresponding to the emission measure 0.4--8.4$\\times10^{10}$ cm$^{-6}$ pc. The H26$\\alpha$ line fluxes from the eight hyper-compact HII sources imply that the ionization for each of the sources mus"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1108.0916","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":"2026-05-18T02:01:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DKry63CWVQKddnqB1yxcJnIoZ/bcCDdk/SnOa1ufwoOTfKEjRE2/Sz4nzsDpRzS+4BCowecRmuL9zItY/DvcAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T03:48:46.956491Z"},"content_sha256":"dc60e7591e7ef7d340b21ed0a5867866e10e2921feffa0f8c1f9a716485c9e3a","schema_version":"1.0","event_id":"sha256:dc60e7591e7ef7d340b21ed0a5867866e10e2921feffa0f8c1f9a716485c9e3a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/H66NQBYLQB3FQMTEN6PMQP25NV/bundle.json","state_url":"https://pith.science/pith/H66NQBYLQB3FQMTEN6PMQP25NV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/H66NQBYLQB3FQMTEN6PMQP25NV/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":"2026-06-09T03:48:46Z","links":{"resolver":"https://pith.science/pith/H66NQBYLQB3FQMTEN6PMQP25NV","bundle":"https://pith.science/pith/H66NQBYLQB3FQMTEN6PMQP25NV/bundle.json","state":"https://pith.science/pith/H66NQBYLQB3FQMTEN6PMQP25NV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/H66NQBYLQB3FQMTEN6PMQP25NV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:H66NQBYLQB3FQMTEN6PMQP25NV","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":"e00e4105aa977f840c10392adcdf106e520bfde86472732092bb61dcc4e50196","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-08-03T19:15:08Z","title_canon_sha256":"400da830692a5439361d0c014589ac110fb4ccf4fb8bb5a904bdcaa724f290e9"},"schema_version":"1.0","source":{"id":"1108.0916","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1108.0916","created_at":"2026-05-18T02:01:03Z"},{"alias_kind":"arxiv_version","alias_value":"1108.0916v1","created_at":"2026-05-18T02:01:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1108.0916","created_at":"2026-05-18T02:01:03Z"},{"alias_kind":"pith_short_12","alias_value":"H66NQBYLQB3F","created_at":"2026-05-18T12:26:30Z"},{"alias_kind":"pith_short_16","alias_value":"H66NQBYLQB3FQMTE","created_at":"2026-05-18T12:26:30Z"},{"alias_kind":"pith_short_8","alias_value":"H66NQBYL","created_at":"2026-05-18T12:26:30Z"}],"graph_snapshots":[{"event_id":"sha256:dc60e7591e7ef7d340b21ed0a5867866e10e2921feffa0f8c1f9a716485c9e3a","target":"graph","created_at":"2026-05-18T02:01:03Z","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":"The ionized core in the Sgr B2 Main star-forming region was imaged using the Submillimeter Array archival data observed for the H26$\\alpha$ line and continuum emission at 0.86 millimeter with an angular resolution 0.3\\arcsec. Eight hyper-compact H26$\\alpha$ emission sources were detected with a typical size in the range of 1.6--20$\\times10^2$ AU and electron density of 0.3--3$\\times10^7$ cm$^{-3}$, corresponding to the emission measure 0.4--8.4$\\times10^{10}$ cm$^{-6}$ pc. The H26$\\alpha$ line fluxes from the eight hyper-compact HII sources imply that the ionization for each of the sources mus","authors_text":"Jun-Hui Zhao, M. C. H. Wright","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-08-03T19:15:08Z","title":"Sagittarius B2 Main: A Cluster of Ultra-Compact HII Regions and Massive Protostellar Cores"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1108.0916","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":"sha256:25e16e5aec437e81705e37057de0394585c543723b56a5549b52d4b06e2c7467","target":"record","created_at":"2026-05-18T02:01:03Z","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":"e00e4105aa977f840c10392adcdf106e520bfde86472732092bb61dcc4e50196","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-08-03T19:15:08Z","title_canon_sha256":"400da830692a5439361d0c014589ac110fb4ccf4fb8bb5a904bdcaa724f290e9"},"schema_version":"1.0","source":{"id":"1108.0916","kind":"arxiv","version":1}},"canonical_sha256":"3fbcd8070b80765832646f9ec83f5d6d5229dc90be28618d672d39eceec282c8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3fbcd8070b80765832646f9ec83f5d6d5229dc90be28618d672d39eceec282c8","first_computed_at":"2026-05-18T02:01:03.366267Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:01:03.366267Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"xQjQ4JQeYsuxPMPMCHwNfyREodZ2l40iN4tBrSFVDScFrV7wObF8jZJRc9I7I8rsBzXf5GQypI6hYafSG4wuCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:01:03.366953Z","signed_message":"canonical_sha256_bytes"},"source_id":"1108.0916","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:25e16e5aec437e81705e37057de0394585c543723b56a5549b52d4b06e2c7467","sha256:dc60e7591e7ef7d340b21ed0a5867866e10e2921feffa0f8c1f9a716485c9e3a"],"state_sha256":"14bafa672a3647c1f71fbb389152eaee18177e28d74b5e1ad6c89ca21dfef56c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IHFiuJNq/mkATkWlb/+PwMZdgUC/kWZxQO4f5ozOKqd5Z3ty0F9k0rE02dL/2jBKiJ60oeBLZVWSVwkOULTEBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-09T03:48:46.960178Z","bundle_sha256":"13ee2848c8aaaf90a17d806f89e24eb767c3d2c73cf788e37dda1d37da0a20b8"}}