{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:NZ5CN64AOTWTNVYOYIGNKPVVJC","short_pith_number":"pith:NZ5CN64A","canonical_record":{"source":{"id":"2308.08665","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2023-08-16T20:32:37Z","cross_cats_sorted":[],"title_canon_sha256":"8158474d29dea6460be33856b166238dfc07447f6feef2bdcd0b8c5656c466bd","abstract_canon_sha256":"cdefccbacde4d4f4aeda29f00a17e62749b10eecb8c1a14bb1e3f694de7f7206"},"schema_version":"1.0"},"canonical_sha256":"6e7a26fb8074ed36d70ec20cd53eb548bd7db96167beaa64722a8290f89a8477","source":{"kind":"arxiv","id":"2308.08665","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2308.08665","created_at":"2026-07-05T07:00:45Z"},{"alias_kind":"arxiv_version","alias_value":"2308.08665v1","created_at":"2026-07-05T07:00:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2308.08665","created_at":"2026-07-05T07:00:45Z"},{"alias_kind":"pith_short_12","alias_value":"NZ5CN64AOTWT","created_at":"2026-07-05T07:00:45Z"},{"alias_kind":"pith_short_16","alias_value":"NZ5CN64AOTWTNVYO","created_at":"2026-07-05T07:00:45Z"},{"alias_kind":"pith_short_8","alias_value":"NZ5CN64A","created_at":"2026-07-05T07:00:45Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:NZ5CN64AOTWTNVYOYIGNKPVVJC","target":"record","payload":{"canonical_record":{"source":{"id":"2308.08665","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2023-08-16T20:32:37Z","cross_cats_sorted":[],"title_canon_sha256":"8158474d29dea6460be33856b166238dfc07447f6feef2bdcd0b8c5656c466bd","abstract_canon_sha256":"cdefccbacde4d4f4aeda29f00a17e62749b10eecb8c1a14bb1e3f694de7f7206"},"schema_version":"1.0"},"canonical_sha256":"6e7a26fb8074ed36d70ec20cd53eb548bd7db96167beaa64722a8290f89a8477","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T07:00:45.301755Z","signature_b64":"STtKCvDZdhz0QD4/q0sNaTofixKyTqS3rZKLp2XqETF2iSzhkJTBnnnCDtPLTcD3uLYnIS6+P891s0DmKyvcAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6e7a26fb8074ed36d70ec20cd53eb548bd7db96167beaa64722a8290f89a8477","last_reissued_at":"2026-07-05T07:00:45.301257Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T07:00:45.301257Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2308.08665","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":"2026-07-05T07:00:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tKXJsnDODIbYqEIr97QAd+iFQ8ZghNQO7QL7QLiaVia3YtDtHV04ocknZLniGCjkgb2BY7aeHWbCYXT+o0fxAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T11:01:35.579235Z"},"content_sha256":"71d87a91ac24477f0c3458cad102f4f625fcf49aee0b989afa0032368e330ef2","schema_version":"1.0","event_id":"sha256:71d87a91ac24477f0c3458cad102f4f625fcf49aee0b989afa0032368e330ef2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:NZ5CN64AOTWTNVYOYIGNKPVVJC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The 107 GHz methanol transition is a dasar in G0.253+0.016","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Adam Ginsburg, Alyssa Bulatek, Christian Henkel, Jeremy Darling, Karl M. Menten","submitted_at":"2023-08-16T20:32:37Z","abstract_excerpt":"We present observations of population anti-inversion in the $3_1 - 4_0\\ A^+$ transition of CH$_3$OH (methanol) at 107.013831 GHz toward the Galactic Center cloud G0.253+0.016 (\"The Brick\"). Anti-inversion of molecular level populations can result in absorption lines against the cosmic microwave background (CMB) in a phenomenon known as a \"dasar.\" We model the physical conditions under which the 107 GHz methanol transition dases and determine that dasing occurs at densities below $10^6$ cm$^{-3}$ and column densities between $10^{13}$ and $10^{16}$ cm$^{-2}$. We also find that for this transiti"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2308.08665","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2308.08665/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T07:00:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8Y3n3PzNdpVTuWJZQ88qCfd2FHxeLRf/gWTs3Qorj7b4jczqFkOvJCapgo+/X3vIS1gvOoeRdIVjvvxevt1iBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T11:01:35.580033Z"},"content_sha256":"96e9fdaf8522fc00be391f98a58aefe1d159254e42488a08e4df2606041edaba","schema_version":"1.0","event_id":"sha256:96e9fdaf8522fc00be391f98a58aefe1d159254e42488a08e4df2606041edaba"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NZ5CN64AOTWTNVYOYIGNKPVVJC/bundle.json","state_url":"https://pith.science/pith/NZ5CN64AOTWTNVYOYIGNKPVVJC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NZ5CN64AOTWTNVYOYIGNKPVVJC/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":"2026-08-05T11:01:35Z","links":{"resolver":"https://pith.science/pith/NZ5CN64AOTWTNVYOYIGNKPVVJC","bundle":"https://pith.science/pith/NZ5CN64AOTWTNVYOYIGNKPVVJC/bundle.json","state":"https://pith.science/pith/NZ5CN64AOTWTNVYOYIGNKPVVJC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NZ5CN64AOTWTNVYOYIGNKPVVJC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:NZ5CN64AOTWTNVYOYIGNKPVVJC","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":"cdefccbacde4d4f4aeda29f00a17e62749b10eecb8c1a14bb1e3f694de7f7206","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2023-08-16T20:32:37Z","title_canon_sha256":"8158474d29dea6460be33856b166238dfc07447f6feef2bdcd0b8c5656c466bd"},"schema_version":"1.0","source":{"id":"2308.08665","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2308.08665","created_at":"2026-07-05T07:00:45Z"},{"alias_kind":"arxiv_version","alias_value":"2308.08665v1","created_at":"2026-07-05T07:00:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2308.08665","created_at":"2026-07-05T07:00:45Z"},{"alias_kind":"pith_short_12","alias_value":"NZ5CN64AOTWT","created_at":"2026-07-05T07:00:45Z"},{"alias_kind":"pith_short_16","alias_value":"NZ5CN64AOTWTNVYO","created_at":"2026-07-05T07:00:45Z"},{"alias_kind":"pith_short_8","alias_value":"NZ5CN64A","created_at":"2026-07-05T07:00:45Z"}],"graph_snapshots":[{"event_id":"sha256:96e9fdaf8522fc00be391f98a58aefe1d159254e42488a08e4df2606041edaba","target":"graph","created_at":"2026-07-05T07:00:45Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2308.08665/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present observations of population anti-inversion in the $3_1 - 4_0\\ A^+$ transition of CH$_3$OH (methanol) at 107.013831 GHz toward the Galactic Center cloud G0.253+0.016 (\"The Brick\"). Anti-inversion of molecular level populations can result in absorption lines against the cosmic microwave background (CMB) in a phenomenon known as a \"dasar.\" We model the physical conditions under which the 107 GHz methanol transition dases and determine that dasing occurs at densities below $10^6$ cm$^{-3}$ and column densities between $10^{13}$ and $10^{16}$ cm$^{-2}$. We also find that for this transiti","authors_text":"Adam Ginsburg, Alyssa Bulatek, Christian Henkel, Jeremy Darling, Karl M. Menten","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2023-08-16T20:32:37Z","title":"The 107 GHz methanol transition is a dasar in G0.253+0.016"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2308.08665","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":"sha256:71d87a91ac24477f0c3458cad102f4f625fcf49aee0b989afa0032368e330ef2","target":"record","created_at":"2026-07-05T07:00:45Z","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":"cdefccbacde4d4f4aeda29f00a17e62749b10eecb8c1a14bb1e3f694de7f7206","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2023-08-16T20:32:37Z","title_canon_sha256":"8158474d29dea6460be33856b166238dfc07447f6feef2bdcd0b8c5656c466bd"},"schema_version":"1.0","source":{"id":"2308.08665","kind":"arxiv","version":1}},"canonical_sha256":"6e7a26fb8074ed36d70ec20cd53eb548bd7db96167beaa64722a8290f89a8477","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6e7a26fb8074ed36d70ec20cd53eb548bd7db96167beaa64722a8290f89a8477","first_computed_at":"2026-07-05T07:00:45.301257Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T07:00:45.301257Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"STtKCvDZdhz0QD4/q0sNaTofixKyTqS3rZKLp2XqETF2iSzhkJTBnnnCDtPLTcD3uLYnIS6+P891s0DmKyvcAA==","signature_status":"signed_v1","signed_at":"2026-07-05T07:00:45.301755Z","signed_message":"canonical_sha256_bytes"},"source_id":"2308.08665","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:71d87a91ac24477f0c3458cad102f4f625fcf49aee0b989afa0032368e330ef2","sha256:96e9fdaf8522fc00be391f98a58aefe1d159254e42488a08e4df2606041edaba"],"state_sha256":"1451c64aec5aa85e307cfed85f92cba31ced6be65454c271a8155e72852ce14c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GmFMlmAAFEzPlyWCgMtLvlxRvBeG3pDn+AIHP0KvBFg7U8CidAyJrrfSMSZu8gLSFdL2ErVcZze7jPcnw7RNBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T11:01:35.584226Z","bundle_sha256":"8857a9b7e403fd752a05661e478d0bc7a26ca9654f1709fa29d77ef493118d4d"}}