{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:CEHMTSPOG55RTOJ425QM2FMY4Y","short_pith_number":"pith:CEHMTSPO","canonical_record":{"source":{"id":"2007.01872","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-07-03T18:00:00Z","cross_cats_sorted":[],"title_canon_sha256":"0db5f6827e8a768f739707f55001d96c4a4bf25b7310d07bc29e9d380d415543","abstract_canon_sha256":"7abbeabd9af0a8618d469ef78f991292af9e87c5997b67ac86c35c12c496fe2e"},"schema_version":"1.0"},"canonical_sha256":"110ec9c9ee377b19b93cd760cd1598e608230109c7fd8cd84e05f793cd4a668c","source":{"kind":"arxiv","id":"2007.01872","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2007.01872","created_at":"2026-07-05T01:16:16Z"},{"alias_kind":"arxiv_version","alias_value":"2007.01872v1","created_at":"2026-07-05T01:16:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2007.01872","created_at":"2026-07-05T01:16:16Z"},{"alias_kind":"pith_short_12","alias_value":"CEHMTSPOG55R","created_at":"2026-07-05T01:16:16Z"},{"alias_kind":"pith_short_16","alias_value":"CEHMTSPOG55RTOJ4","created_at":"2026-07-05T01:16:16Z"},{"alias_kind":"pith_short_8","alias_value":"CEHMTSPO","created_at":"2026-07-05T01:16:16Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:CEHMTSPOG55RTOJ425QM2FMY4Y","target":"record","payload":{"canonical_record":{"source":{"id":"2007.01872","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-07-03T18:00:00Z","cross_cats_sorted":[],"title_canon_sha256":"0db5f6827e8a768f739707f55001d96c4a4bf25b7310d07bc29e9d380d415543","abstract_canon_sha256":"7abbeabd9af0a8618d469ef78f991292af9e87c5997b67ac86c35c12c496fe2e"},"schema_version":"1.0"},"canonical_sha256":"110ec9c9ee377b19b93cd760cd1598e608230109c7fd8cd84e05f793cd4a668c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:16:16.970235Z","signature_b64":"nBru6Fub2Pbxw9uGLjiUaPqLx5IV9eUzyBu92DxRnQm22MJ8yKcC+DxGIXXiHumI10WYjDwM4QZDMdkLN/o6Bw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"110ec9c9ee377b19b93cd760cd1598e608230109c7fd8cd84e05f793cd4a668c","last_reissued_at":"2026-07-05T01:16:16.969848Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:16:16.969848Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2007.01872","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":"2026-07-05T01:16:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bya/MF5cwN3ZVmT027IMRO8ZvY2gCGY2vEGtpvs8sSNCHYa3/U5iGYnC2YWnb992ub9TM725VMWX+7sgPeDMDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T18:04:39.012824Z"},"content_sha256":"26c2da38be398600dd620fb5053c1ddb2163a774a71c899c7d1beece9e6433aa","schema_version":"1.0","event_id":"sha256:26c2da38be398600dd620fb5053c1ddb2163a774a71c899c7d1beece9e6433aa"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:CEHMTSPOG55RTOJ425QM2FMY4Y","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Discovery of diffuse optical emission lines from the inner Galaxy: Evidence for LI(N)ER-like gas","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Dhanesh Krishnarao, L. Matthew Haffner, Robert A. Benjamin","submitted_at":"2020-07-03T18:00:00Z","abstract_excerpt":"Optical emission lines are used to categorize galaxies into three groups according to their dominant central radiation source: active galactic nuclei, star formation, or low-ionization (nuclear) emission regions [LI(N)ERs] that may trace ionizing radiation from older stellar populations. Using the Wisconsin H-Alpha Mapper, we detect optical line emission in low-extinction windows within eight degrees of Galactic Center. The emission is associated with the 1.5-kiloparsec-radius \"Tilted Disk\" of neutral gas. We modify a model of this disk and find that the hydrogen gas observed is at least $48\\%"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2007.01872","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/2007.01872/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":"2026-07-05T01:16:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"r4ZXJ3lHYkcpnpMZ+TzAvQgglwKm4YhoHKmzQbMxeKHciGlny+Mu7ma61Ao5oxKQMW7pBtS2I/Zq12M6KVx3Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T18:04:39.013332Z"},"content_sha256":"f46e3c06277b4ef09a989880c3daf38ed07eff2b1c03aee48b5132b27253ad83","schema_version":"1.0","event_id":"sha256:f46e3c06277b4ef09a989880c3daf38ed07eff2b1c03aee48b5132b27253ad83"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CEHMTSPOG55RTOJ425QM2FMY4Y/bundle.json","state_url":"https://pith.science/pith/CEHMTSPOG55RTOJ425QM2FMY4Y/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CEHMTSPOG55RTOJ425QM2FMY4Y/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":"2026-08-05T18:04:39Z","links":{"resolver":"https://pith.science/pith/CEHMTSPOG55RTOJ425QM2FMY4Y","bundle":"https://pith.science/pith/CEHMTSPOG55RTOJ425QM2FMY4Y/bundle.json","state":"https://pith.science/pith/CEHMTSPOG55RTOJ425QM2FMY4Y/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CEHMTSPOG55RTOJ425QM2FMY4Y/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:CEHMTSPOG55RTOJ425QM2FMY4Y","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":"7abbeabd9af0a8618d469ef78f991292af9e87c5997b67ac86c35c12c496fe2e","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-07-03T18:00:00Z","title_canon_sha256":"0db5f6827e8a768f739707f55001d96c4a4bf25b7310d07bc29e9d380d415543"},"schema_version":"1.0","source":{"id":"2007.01872","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2007.01872","created_at":"2026-07-05T01:16:16Z"},{"alias_kind":"arxiv_version","alias_value":"2007.01872v1","created_at":"2026-07-05T01:16:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2007.01872","created_at":"2026-07-05T01:16:16Z"},{"alias_kind":"pith_short_12","alias_value":"CEHMTSPOG55R","created_at":"2026-07-05T01:16:16Z"},{"alias_kind":"pith_short_16","alias_value":"CEHMTSPOG55RTOJ4","created_at":"2026-07-05T01:16:16Z"},{"alias_kind":"pith_short_8","alias_value":"CEHMTSPO","created_at":"2026-07-05T01:16:16Z"}],"graph_snapshots":[{"event_id":"sha256:f46e3c06277b4ef09a989880c3daf38ed07eff2b1c03aee48b5132b27253ad83","target":"graph","created_at":"2026-07-05T01:16:16Z","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/2007.01872/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Optical emission lines are used to categorize galaxies into three groups according to their dominant central radiation source: active galactic nuclei, star formation, or low-ionization (nuclear) emission regions [LI(N)ERs] that may trace ionizing radiation from older stellar populations. Using the Wisconsin H-Alpha Mapper, we detect optical line emission in low-extinction windows within eight degrees of Galactic Center. The emission is associated with the 1.5-kiloparsec-radius \"Tilted Disk\" of neutral gas. We modify a model of this disk and find that the hydrogen gas observed is at least $48\\%","authors_text":"Dhanesh Krishnarao, L. Matthew Haffner, Robert A. Benjamin","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-07-03T18:00:00Z","title":"Discovery of diffuse optical emission lines from the inner Galaxy: Evidence for LI(N)ER-like gas"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2007.01872","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":"sha256:26c2da38be398600dd620fb5053c1ddb2163a774a71c899c7d1beece9e6433aa","target":"record","created_at":"2026-07-05T01:16:16Z","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":"7abbeabd9af0a8618d469ef78f991292af9e87c5997b67ac86c35c12c496fe2e","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-07-03T18:00:00Z","title_canon_sha256":"0db5f6827e8a768f739707f55001d96c4a4bf25b7310d07bc29e9d380d415543"},"schema_version":"1.0","source":{"id":"2007.01872","kind":"arxiv","version":1}},"canonical_sha256":"110ec9c9ee377b19b93cd760cd1598e608230109c7fd8cd84e05f793cd4a668c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"110ec9c9ee377b19b93cd760cd1598e608230109c7fd8cd84e05f793cd4a668c","first_computed_at":"2026-07-05T01:16:16.969848Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:16:16.969848Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"nBru6Fub2Pbxw9uGLjiUaPqLx5IV9eUzyBu92DxRnQm22MJ8yKcC+DxGIXXiHumI10WYjDwM4QZDMdkLN/o6Bw==","signature_status":"signed_v1","signed_at":"2026-07-05T01:16:16.970235Z","signed_message":"canonical_sha256_bytes"},"source_id":"2007.01872","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:26c2da38be398600dd620fb5053c1ddb2163a774a71c899c7d1beece9e6433aa","sha256:f46e3c06277b4ef09a989880c3daf38ed07eff2b1c03aee48b5132b27253ad83"],"state_sha256":"61206cbc6747435f4a45c7135fb95bf47f38cd5643709760b66fb6606228bb38"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"X3bEQ23I46dW+BGh+WHI14lfx3qKxRyP36ovEySRbLI+bNmQOi0YeBivCyqQfg31fI2gEhkVUS0REnAyRKSACA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T18:04:39.017517Z","bundle_sha256":"b9422fb6e0b790b1371cc295ad5777d7ba539a6b569638509bc786f86fa715e6"}}