{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:PN4BJ4P62QNHXPYR3EQQ356P6F","short_pith_number":"pith:PN4BJ4P6","canonical_record":{"source":{"id":"0903.3029","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-03-17T18:48:52Z","cross_cats_sorted":[],"title_canon_sha256":"a1563fa14ab011011c93c9d3bdf15e9b0cb53824d71f3275706dadc6aeb3ae26","abstract_canon_sha256":"94f9fa6f31995d66775a24cdf6638362a12ba71a959306bc66285dc4716cb050"},"schema_version":"1.0"},"canonical_sha256":"7b7814f1fed41a7bbf11d9210df7cff15cdafcbe73ba376e719c7274f4a48013","source":{"kind":"arxiv","id":"0903.3029","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0903.3029","created_at":"2026-05-18T02:35:00Z"},{"alias_kind":"arxiv_version","alias_value":"0903.3029v1","created_at":"2026-05-18T02:35:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0903.3029","created_at":"2026-05-18T02:35:00Z"},{"alias_kind":"pith_short_12","alias_value":"PN4BJ4P62QNH","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_16","alias_value":"PN4BJ4P62QNHXPYR","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_8","alias_value":"PN4BJ4P6","created_at":"2026-05-18T12:26:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:PN4BJ4P62QNHXPYR3EQQ356P6F","target":"record","payload":{"canonical_record":{"source":{"id":"0903.3029","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-03-17T18:48:52Z","cross_cats_sorted":[],"title_canon_sha256":"a1563fa14ab011011c93c9d3bdf15e9b0cb53824d71f3275706dadc6aeb3ae26","abstract_canon_sha256":"94f9fa6f31995d66775a24cdf6638362a12ba71a959306bc66285dc4716cb050"},"schema_version":"1.0"},"canonical_sha256":"7b7814f1fed41a7bbf11d9210df7cff15cdafcbe73ba376e719c7274f4a48013","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:35:00.371854Z","signature_b64":"qFNJiXezu/Q4qwBycRhlkowUnYtJlrbvahIC/sLPCZqzRvTqwBHoulcWrXhEZB+KX4ZaWSAqNbJeSn0l/bqYAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7b7814f1fed41a7bbf11d9210df7cff15cdafcbe73ba376e719c7274f4a48013","last_reissued_at":"2026-05-18T02:35:00.371368Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:35:00.371368Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0903.3029","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":"2026-05-18T02:35:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tCPyobg/oLa1eteGvW20QZGFKKIINrfbNFFt8y5XAhwajn60ddpD27+k9H57ZAGSX16PBO8jyhpTqZwkofTLCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T16:11:47.937623Z"},"content_sha256":"1c2af88fe9aeaa05cd4401d3644830c883e8228438170bf7d6b84dc966d31fb2","schema_version":"1.0","event_id":"sha256:1c2af88fe9aeaa05cd4401d3644830c883e8228438170bf7d6b84dc966d31fb2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:PN4BJ4P62QNHXPYR3EQQ356P6F","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Hot Plasma in Non-Flaring Active Regions Observed by the Extreme-ultraviolet Imaging Spectrometer on Hinode","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"George A. Doschek, Harry P. Warren, Peter R. Young, Yuan-Kuen Ko","submitted_at":"2009-03-17T18:48:52Z","abstract_excerpt":"The Extreme-ultraviolet Imaging Spectrometer (EIS) on the Hinode spacecraft obtains high resolution spectra of the solar atmosphere in two wavelength ranges: 170 - 210 and 250 - 290 angstroms. These wavelength regions contain a wealth of emission lines covering temperature regions from the chromosphere/transition region (e.g., He II, Si VII) up to flare temperatures (Fe XXIII, Fe XXIV). Of particular interest for understanding coronal heating is a line of Ca XVII at 192.858 angstroms, formed near a temperature of 6 million degrees. However, this line is blended with two Fe XI and six O V lines"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0903.3029","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":"2026-05-18T02:35:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"b/F7ylP+uNcDcP44GbEPZSqeoV58TA38FaZHQZQE6Ugh5P+tiFen7ev0cBdouTXV5r2WgjEq+wFTi6sRipMjCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T16:11:47.938265Z"},"content_sha256":"b600b83e0a35265ceb778f4479f17ab68e2905725ee06bcb91682992743c4aa3","schema_version":"1.0","event_id":"sha256:b600b83e0a35265ceb778f4479f17ab68e2905725ee06bcb91682992743c4aa3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PN4BJ4P62QNHXPYR3EQQ356P6F/bundle.json","state_url":"https://pith.science/pith/PN4BJ4P62QNHXPYR3EQQ356P6F/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PN4BJ4P62QNHXPYR3EQQ356P6F/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":"2026-05-26T16:11:47Z","links":{"resolver":"https://pith.science/pith/PN4BJ4P62QNHXPYR3EQQ356P6F","bundle":"https://pith.science/pith/PN4BJ4P62QNHXPYR3EQQ356P6F/bundle.json","state":"https://pith.science/pith/PN4BJ4P62QNHXPYR3EQQ356P6F/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PN4BJ4P62QNHXPYR3EQQ356P6F/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:PN4BJ4P62QNHXPYR3EQQ356P6F","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":"94f9fa6f31995d66775a24cdf6638362a12ba71a959306bc66285dc4716cb050","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-03-17T18:48:52Z","title_canon_sha256":"a1563fa14ab011011c93c9d3bdf15e9b0cb53824d71f3275706dadc6aeb3ae26"},"schema_version":"1.0","source":{"id":"0903.3029","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0903.3029","created_at":"2026-05-18T02:35:00Z"},{"alias_kind":"arxiv_version","alias_value":"0903.3029v1","created_at":"2026-05-18T02:35:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0903.3029","created_at":"2026-05-18T02:35:00Z"},{"alias_kind":"pith_short_12","alias_value":"PN4BJ4P62QNH","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_16","alias_value":"PN4BJ4P62QNHXPYR","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_8","alias_value":"PN4BJ4P6","created_at":"2026-05-18T12:26:01Z"}],"graph_snapshots":[{"event_id":"sha256:b600b83e0a35265ceb778f4479f17ab68e2905725ee06bcb91682992743c4aa3","target":"graph","created_at":"2026-05-18T02:35:00Z","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 Extreme-ultraviolet Imaging Spectrometer (EIS) on the Hinode spacecraft obtains high resolution spectra of the solar atmosphere in two wavelength ranges: 170 - 210 and 250 - 290 angstroms. These wavelength regions contain a wealth of emission lines covering temperature regions from the chromosphere/transition region (e.g., He II, Si VII) up to flare temperatures (Fe XXIII, Fe XXIV). Of particular interest for understanding coronal heating is a line of Ca XVII at 192.858 angstroms, formed near a temperature of 6 million degrees. However, this line is blended with two Fe XI and six O V lines","authors_text":"George A. Doschek, Harry P. Warren, Peter R. Young, Yuan-Kuen Ko","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-03-17T18:48:52Z","title":"Hot Plasma in Non-Flaring Active Regions Observed by the Extreme-ultraviolet Imaging Spectrometer on Hinode"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0903.3029","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":"sha256:1c2af88fe9aeaa05cd4401d3644830c883e8228438170bf7d6b84dc966d31fb2","target":"record","created_at":"2026-05-18T02:35:00Z","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":"94f9fa6f31995d66775a24cdf6638362a12ba71a959306bc66285dc4716cb050","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-03-17T18:48:52Z","title_canon_sha256":"a1563fa14ab011011c93c9d3bdf15e9b0cb53824d71f3275706dadc6aeb3ae26"},"schema_version":"1.0","source":{"id":"0903.3029","kind":"arxiv","version":1}},"canonical_sha256":"7b7814f1fed41a7bbf11d9210df7cff15cdafcbe73ba376e719c7274f4a48013","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7b7814f1fed41a7bbf11d9210df7cff15cdafcbe73ba376e719c7274f4a48013","first_computed_at":"2026-05-18T02:35:00.371368Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:35:00.371368Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qFNJiXezu/Q4qwBycRhlkowUnYtJlrbvahIC/sLPCZqzRvTqwBHoulcWrXhEZB+KX4ZaWSAqNbJeSn0l/bqYAw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:35:00.371854Z","signed_message":"canonical_sha256_bytes"},"source_id":"0903.3029","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1c2af88fe9aeaa05cd4401d3644830c883e8228438170bf7d6b84dc966d31fb2","sha256:b600b83e0a35265ceb778f4479f17ab68e2905725ee06bcb91682992743c4aa3"],"state_sha256":"ea45798468ac968c681f9528fab221c554b9fa325ca80bc184a3791453cab5b0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5nY/f8EtbTxpztptDsu5tjKYzqaYJAdsruSrK25ZQs+yBT5HRyPJp52Hw5D0c75rzyRBkO3lsNvbv2gTfj6bDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T16:11:47.941710Z","bundle_sha256":"c052feed4f5ab3188e88776700a4373fa35a4001e6835ef72e645df3030a281d"}}