{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2000:SV5Y7IWGWKXYPTRMVI3RJ4IF3F","short_pith_number":"pith:SV5Y7IWG","canonical_record":{"source":{"id":"astro-ph/0010191","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2000-10-10T15:42:32Z","cross_cats_sorted":[],"title_canon_sha256":"d2083234cf336e06726f6ef18d8092bdaf263bea79182c51618836ef7ed18550","abstract_canon_sha256":"69b3fdedd2f08e8a1829168b413c5d9c0760da00587d390184b33a09ec6cb79d"},"schema_version":"1.0"},"canonical_sha256":"957b8fa2c6b2af87ce2caa3714f105d948ff9d0d2bc59e0765f937fcb250e600","source":{"kind":"arxiv","id":"astro-ph/0010191","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0010191","created_at":"2026-07-04T16:17:22Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0010191v1","created_at":"2026-07-04T16:17:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0010191","created_at":"2026-07-04T16:17:22Z"},{"alias_kind":"pith_short_12","alias_value":"SV5Y7IWGWKXY","created_at":"2026-07-04T16:17:22Z"},{"alias_kind":"pith_short_16","alias_value":"SV5Y7IWGWKXYPTRM","created_at":"2026-07-04T16:17:22Z"},{"alias_kind":"pith_short_8","alias_value":"SV5Y7IWG","created_at":"2026-07-04T16:17:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2000:SV5Y7IWGWKXYPTRMVI3RJ4IF3F","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0010191","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2000-10-10T15:42:32Z","cross_cats_sorted":[],"title_canon_sha256":"d2083234cf336e06726f6ef18d8092bdaf263bea79182c51618836ef7ed18550","abstract_canon_sha256":"69b3fdedd2f08e8a1829168b413c5d9c0760da00587d390184b33a09ec6cb79d"},"schema_version":"1.0"},"canonical_sha256":"957b8fa2c6b2af87ce2caa3714f105d948ff9d0d2bc59e0765f937fcb250e600","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:17:22.240646Z","signature_b64":"W5W5RQSuTiVOlpY83lmbprspWkIGBnaMFBgTL6zVOhazo49swjapB9f8iefSPAhEWbi29nlTtxgDY7Mle7PlCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"957b8fa2c6b2af87ce2caa3714f105d948ff9d0d2bc59e0765f937fcb250e600","last_reissued_at":"2026-07-04T16:17:22.240291Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:17:22.240291Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0010191","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":"2026-07-04T16:17:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oeFs3eTzQ1mTw2CRex0rsOfKX7mju1EdfmIUdLEjoWtxhxZqBEnLt7YuAKVRari553GST7/QKjj/Omd2rgVxAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T07:34:23.670133Z"},"content_sha256":"43d84596c224b2e96c4aa8775d9cf5f9b441edede501d9f2e55ca41900675c9e","schema_version":"1.0","event_id":"sha256:43d84596c224b2e96c4aa8775d9cf5f9b441edede501d9f2e55ca41900675c9e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2000:SV5Y7IWGWKXYPTRMVI3RJ4IF3F","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Warm Ionized Medium in the Milky Way and Other Galaxies","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"John S. Mathis","submitted_at":"2000-10-10T15:42:32Z","abstract_excerpt":"Observations of the \"Warm Ionized Medium\" (or, equivalently, the \"Diffuse Ionized Gas\") of the local ISM, the Perseus arm in the Milky Way, and also in several other galaxies show strong [NII]6563 (~H-alpha in some cases) and [SII]6717/[NII]6583 = 0.6 - 0.7 in all locations and objects. Other line ratios (e.g., [O III]5007/H-beta) vary considerably. Simple photoionization models reproduce the observed spectra, providing extra heating beyond that supplied by photoionization is assumed (Reynolds, Haffner, & Tufte 1999). With observed gas-phase abundances (not solar), the line ratios in the local"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0010191","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/astro-ph/0010191/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":"2026-07-04T16:17:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BLk156fjnlvItAj2KCyHXPQ//qsRrmG69lpw2zOTg1aj0wKr5uVopegVnLTP+h9U8Nt2dPO2oYeCV9VgGfo0BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T07:34:23.670690Z"},"content_sha256":"9eb691725f83eb287be30e9d965e48dd78105e992087cb64c1ef36ffe39164bb","schema_version":"1.0","event_id":"sha256:9eb691725f83eb287be30e9d965e48dd78105e992087cb64c1ef36ffe39164bb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SV5Y7IWGWKXYPTRMVI3RJ4IF3F/bundle.json","state_url":"https://pith.science/pith/SV5Y7IWGWKXYPTRMVI3RJ4IF3F/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SV5Y7IWGWKXYPTRMVI3RJ4IF3F/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":"2026-08-18T07:34:23Z","links":{"resolver":"https://pith.science/pith/SV5Y7IWGWKXYPTRMVI3RJ4IF3F","bundle":"https://pith.science/pith/SV5Y7IWGWKXYPTRMVI3RJ4IF3F/bundle.json","state":"https://pith.science/pith/SV5Y7IWGWKXYPTRMVI3RJ4IF3F/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SV5Y7IWGWKXYPTRMVI3RJ4IF3F/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2000:SV5Y7IWGWKXYPTRMVI3RJ4IF3F","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":"69b3fdedd2f08e8a1829168b413c5d9c0760da00587d390184b33a09ec6cb79d","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2000-10-10T15:42:32Z","title_canon_sha256":"d2083234cf336e06726f6ef18d8092bdaf263bea79182c51618836ef7ed18550"},"schema_version":"1.0","source":{"id":"astro-ph/0010191","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0010191","created_at":"2026-07-04T16:17:22Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0010191v1","created_at":"2026-07-04T16:17:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0010191","created_at":"2026-07-04T16:17:22Z"},{"alias_kind":"pith_short_12","alias_value":"SV5Y7IWGWKXY","created_at":"2026-07-04T16:17:22Z"},{"alias_kind":"pith_short_16","alias_value":"SV5Y7IWGWKXYPTRM","created_at":"2026-07-04T16:17:22Z"},{"alias_kind":"pith_short_8","alias_value":"SV5Y7IWG","created_at":"2026-07-04T16:17:22Z"}],"graph_snapshots":[{"event_id":"sha256:9eb691725f83eb287be30e9d965e48dd78105e992087cb64c1ef36ffe39164bb","target":"graph","created_at":"2026-07-04T16:17:22Z","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/astro-ph/0010191/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Observations of the \"Warm Ionized Medium\" (or, equivalently, the \"Diffuse Ionized Gas\") of the local ISM, the Perseus arm in the Milky Way, and also in several other galaxies show strong [NII]6563 (~H-alpha in some cases) and [SII]6717/[NII]6583 = 0.6 - 0.7 in all locations and objects. Other line ratios (e.g., [O III]5007/H-beta) vary considerably. Simple photoionization models reproduce the observed spectra, providing extra heating beyond that supplied by photoionization is assumed (Reynolds, Haffner, & Tufte 1999). With observed gas-phase abundances (not solar), the line ratios in the local","authors_text":"John S. Mathis","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2000-10-10T15:42:32Z","title":"The Warm Ionized Medium in the Milky Way and Other Galaxies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0010191","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":"sha256:43d84596c224b2e96c4aa8775d9cf5f9b441edede501d9f2e55ca41900675c9e","target":"record","created_at":"2026-07-04T16:17:22Z","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":"69b3fdedd2f08e8a1829168b413c5d9c0760da00587d390184b33a09ec6cb79d","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2000-10-10T15:42:32Z","title_canon_sha256":"d2083234cf336e06726f6ef18d8092bdaf263bea79182c51618836ef7ed18550"},"schema_version":"1.0","source":{"id":"astro-ph/0010191","kind":"arxiv","version":1}},"canonical_sha256":"957b8fa2c6b2af87ce2caa3714f105d948ff9d0d2bc59e0765f937fcb250e600","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"957b8fa2c6b2af87ce2caa3714f105d948ff9d0d2bc59e0765f937fcb250e600","first_computed_at":"2026-07-04T16:17:22.240291Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:17:22.240291Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"W5W5RQSuTiVOlpY83lmbprspWkIGBnaMFBgTL6zVOhazo49swjapB9f8iefSPAhEWbi29nlTtxgDY7Mle7PlCw==","signature_status":"signed_v1","signed_at":"2026-07-04T16:17:22.240646Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0010191","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:43d84596c224b2e96c4aa8775d9cf5f9b441edede501d9f2e55ca41900675c9e","sha256:9eb691725f83eb287be30e9d965e48dd78105e992087cb64c1ef36ffe39164bb"],"state_sha256":"6803d7c45904eed20d2cdba8713a372916bdb42d9312a65ae737702a8b49f2eb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uw9mtoMzJYTqe+Fi5Jl1YbIoTGQjnP2QH6nx2XSIji0B9VI8MY0WuCmiNs/+QQ+UtTO387oruaOPIU0tTny5Aw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-18T07:34:23.676646Z","bundle_sha256":"b1f74ac1adb2a624e7476361d542b95ff76975baf097864f884dbfae620d11f5"}}