{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:TFGRY26ELJQDYJN2LL4NJ4CLVK","short_pith_number":"pith:TFGRY26E","canonical_record":{"source":{"id":"1012.5771","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-12-28T14:32:50Z","cross_cats_sorted":[],"title_canon_sha256":"c5264d4ab5b3ed708201c6561638b26ad9ee742b6496aaad977d1fb65ad229c6","abstract_canon_sha256":"3d8c484b5a9ddd16170b975cc9dc46b1c75b2ce93eb877a420a49d0b44c8acd6"},"schema_version":"1.0"},"canonical_sha256":"994d1c6bc45a603c25ba5af8d4f04baa8d79f08d548424e3598e100335a7f049","source":{"kind":"arxiv","id":"1012.5771","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1012.5771","created_at":"2026-05-18T02:04:17Z"},{"alias_kind":"arxiv_version","alias_value":"1012.5771v1","created_at":"2026-05-18T02:04:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1012.5771","created_at":"2026-05-18T02:04:17Z"},{"alias_kind":"pith_short_12","alias_value":"TFGRY26ELJQD","created_at":"2026-05-18T12:26:13Z"},{"alias_kind":"pith_short_16","alias_value":"TFGRY26ELJQDYJN2","created_at":"2026-05-18T12:26:13Z"},{"alias_kind":"pith_short_8","alias_value":"TFGRY26E","created_at":"2026-05-18T12:26:13Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:TFGRY26ELJQDYJN2LL4NJ4CLVK","target":"record","payload":{"canonical_record":{"source":{"id":"1012.5771","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-12-28T14:32:50Z","cross_cats_sorted":[],"title_canon_sha256":"c5264d4ab5b3ed708201c6561638b26ad9ee742b6496aaad977d1fb65ad229c6","abstract_canon_sha256":"3d8c484b5a9ddd16170b975cc9dc46b1c75b2ce93eb877a420a49d0b44c8acd6"},"schema_version":"1.0"},"canonical_sha256":"994d1c6bc45a603c25ba5af8d4f04baa8d79f08d548424e3598e100335a7f049","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:04:17.161471Z","signature_b64":"yCaVd5ub+txKVeIa0w/yvlvfAua42jK+WVHflrZycR4BvSQR7ArfR5BUZFC1c1Jn7umT032AaETTJor381d0CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"994d1c6bc45a603c25ba5af8d4f04baa8d79f08d548424e3598e100335a7f049","last_reissued_at":"2026-05-18T02:04:17.158683Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:04:17.158683Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1012.5771","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":"2026-05-18T02:04:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gf5MxOMmSV0TnEXjKbN2XHx1nlFQYy7hmpA4T9hE0/Tzrt3MzN615XB9efKaHDkavVPD9xu8no39VlG+NvjvDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T22:49:20.907697Z"},"content_sha256":"256fb15a2b08db43e03afcd8dfbbba4f13489639c9b29a2f947cc1f93de7a587","schema_version":"1.0","event_id":"sha256:256fb15a2b08db43e03afcd8dfbbba4f13489639c9b29a2f947cc1f93de7a587"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:TFGRY26ELJQDYJN2LL4NJ4CLVK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"First Interferometric Images of the 36 GHz Methanol Masers in the DR21 Complex","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Lor\\'ant O. Sjouwerman, Preethi Pratap, Talitha C. Muehlbrad, Tyler L. Bourke, Vincent L. Fish, Vladimir Strelnitski, Ylva M. Pihlstr\\\"om","submitted_at":"2010-12-28T14:32:50Z","abstract_excerpt":"Class I methanol masers are believed to be produced in the shock-excited environment around star-forming regions. Many authors have argued that the appearance of various subsets of class I masers may be indicative of specific evolutionary stages of star formation or excitation conditions. Until recently, however, no major interferometer was capable of imaging the important 36 GHz transition. We report on Expanded Very Large Array observations of the 36 GHz methanol masers and Submillimeter Array observations of the 229 GHz methanol masers in DR21(OH), DR21N, and DR21W. The distribution of 36 G"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1012.5771","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":"2026-05-18T02:04:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+k8LkvU468GiisE29HVnY/2UVuGEYMj9pouYzC4nr5oIEA8yyVQxJBZy3ynJnvHvomrcVZAgYdcCUdMvKJ6KDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T22:49:20.908096Z"},"content_sha256":"9280951539db02f02732f6b2b74178e034cc940ef5ba69567314b9ae92da8fd6","schema_version":"1.0","event_id":"sha256:9280951539db02f02732f6b2b74178e034cc940ef5ba69567314b9ae92da8fd6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TFGRY26ELJQDYJN2LL4NJ4CLVK/bundle.json","state_url":"https://pith.science/pith/TFGRY26ELJQDYJN2LL4NJ4CLVK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TFGRY26ELJQDYJN2LL4NJ4CLVK/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":"2026-05-30T22:49:20Z","links":{"resolver":"https://pith.science/pith/TFGRY26ELJQDYJN2LL4NJ4CLVK","bundle":"https://pith.science/pith/TFGRY26ELJQDYJN2LL4NJ4CLVK/bundle.json","state":"https://pith.science/pith/TFGRY26ELJQDYJN2LL4NJ4CLVK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TFGRY26ELJQDYJN2LL4NJ4CLVK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:TFGRY26ELJQDYJN2LL4NJ4CLVK","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":"3d8c484b5a9ddd16170b975cc9dc46b1c75b2ce93eb877a420a49d0b44c8acd6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-12-28T14:32:50Z","title_canon_sha256":"c5264d4ab5b3ed708201c6561638b26ad9ee742b6496aaad977d1fb65ad229c6"},"schema_version":"1.0","source":{"id":"1012.5771","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1012.5771","created_at":"2026-05-18T02:04:17Z"},{"alias_kind":"arxiv_version","alias_value":"1012.5771v1","created_at":"2026-05-18T02:04:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1012.5771","created_at":"2026-05-18T02:04:17Z"},{"alias_kind":"pith_short_12","alias_value":"TFGRY26ELJQD","created_at":"2026-05-18T12:26:13Z"},{"alias_kind":"pith_short_16","alias_value":"TFGRY26ELJQDYJN2","created_at":"2026-05-18T12:26:13Z"},{"alias_kind":"pith_short_8","alias_value":"TFGRY26E","created_at":"2026-05-18T12:26:13Z"}],"graph_snapshots":[{"event_id":"sha256:9280951539db02f02732f6b2b74178e034cc940ef5ba69567314b9ae92da8fd6","target":"graph","created_at":"2026-05-18T02:04:17Z","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":"Class I methanol masers are believed to be produced in the shock-excited environment around star-forming regions. Many authors have argued that the appearance of various subsets of class I masers may be indicative of specific evolutionary stages of star formation or excitation conditions. Until recently, however, no major interferometer was capable of imaging the important 36 GHz transition. We report on Expanded Very Large Array observations of the 36 GHz methanol masers and Submillimeter Array observations of the 229 GHz methanol masers in DR21(OH), DR21N, and DR21W. The distribution of 36 G","authors_text":"Lor\\'ant O. Sjouwerman, Preethi Pratap, Talitha C. Muehlbrad, Tyler L. Bourke, Vincent L. Fish, Vladimir Strelnitski, Ylva M. Pihlstr\\\"om","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-12-28T14:32:50Z","title":"First Interferometric Images of the 36 GHz Methanol Masers in the DR21 Complex"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1012.5771","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":"sha256:256fb15a2b08db43e03afcd8dfbbba4f13489639c9b29a2f947cc1f93de7a587","target":"record","created_at":"2026-05-18T02:04:17Z","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":"3d8c484b5a9ddd16170b975cc9dc46b1c75b2ce93eb877a420a49d0b44c8acd6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-12-28T14:32:50Z","title_canon_sha256":"c5264d4ab5b3ed708201c6561638b26ad9ee742b6496aaad977d1fb65ad229c6"},"schema_version":"1.0","source":{"id":"1012.5771","kind":"arxiv","version":1}},"canonical_sha256":"994d1c6bc45a603c25ba5af8d4f04baa8d79f08d548424e3598e100335a7f049","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"994d1c6bc45a603c25ba5af8d4f04baa8d79f08d548424e3598e100335a7f049","first_computed_at":"2026-05-18T02:04:17.158683Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:04:17.158683Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"yCaVd5ub+txKVeIa0w/yvlvfAua42jK+WVHflrZycR4BvSQR7ArfR5BUZFC1c1Jn7umT032AaETTJor381d0CA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:04:17.161471Z","signed_message":"canonical_sha256_bytes"},"source_id":"1012.5771","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:256fb15a2b08db43e03afcd8dfbbba4f13489639c9b29a2f947cc1f93de7a587","sha256:9280951539db02f02732f6b2b74178e034cc940ef5ba69567314b9ae92da8fd6"],"state_sha256":"c43686333868c5073ecf9843a5d2af46d51eed08aa6322963063970fa7dcf940"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"R5Nhn645OkDr2y4H+xaInCdhG2J7fjUweD58gIrfX+mKqDoXGSxGwMTPQ+u0MpMkgeyPDajZGcivP7m/lOZVCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T22:49:20.910531Z","bundle_sha256":"149b2435b2fb2c97689cb15b169b4e0e8c2c1cb7e877b56f6baa07656e803fe5"}}