{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1999:PCLKL6BI5L2SII2ZQ4FH3A7DVV","short_pith_number":"pith:PCLKL6BI","canonical_record":{"source":{"id":"hep-ph/9907400","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"hep-ph","submitted_at":"1999-07-16T19:18:56Z","cross_cats_sorted":[],"title_canon_sha256":"f2b8e3077793c690492e7c24aab9f0f7f24acb2aa2992d38ef43a38ee3b0ee47","abstract_canon_sha256":"4bb148be12fc785417aca0f5751a7d44ed957be93a7fcbbabb4e894cbc3b7e8b"},"schema_version":"1.0"},"canonical_sha256":"7896a5f828eaf5242359870a7d83e3ad53bed9acb4aed87867bc624f2765a847","source":{"kind":"arxiv","id":"hep-ph/9907400","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ph/9907400","created_at":"2026-05-18T01:38:55Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ph/9907400v2","created_at":"2026-05-18T01:38:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ph/9907400","created_at":"2026-05-18T01:38:55Z"},{"alias_kind":"pith_short_12","alias_value":"PCLKL6BI5L2S","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_16","alias_value":"PCLKL6BI5L2SII2Z","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_8","alias_value":"PCLKL6BI","created_at":"2026-05-18T12:25:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1999:PCLKL6BI5L2SII2ZQ4FH3A7DVV","target":"record","payload":{"canonical_record":{"source":{"id":"hep-ph/9907400","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"hep-ph","submitted_at":"1999-07-16T19:18:56Z","cross_cats_sorted":[],"title_canon_sha256":"f2b8e3077793c690492e7c24aab9f0f7f24acb2aa2992d38ef43a38ee3b0ee47","abstract_canon_sha256":"4bb148be12fc785417aca0f5751a7d44ed957be93a7fcbbabb4e894cbc3b7e8b"},"schema_version":"1.0"},"canonical_sha256":"7896a5f828eaf5242359870a7d83e3ad53bed9acb4aed87867bc624f2765a847","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:38:55.919681Z","signature_b64":"FYbOfMgbyXwd5XoT3mHS6nx23Cb+XyAhn2s1rT6GRUvVaj69wxzNBXYHnwBJwHDLVsQsVMU3DLCZExdCPYyWBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7896a5f828eaf5242359870a7d83e3ad53bed9acb4aed87867bc624f2765a847","last_reissued_at":"2026-05-18T01:38:55.918907Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:38:55.918907Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"hep-ph/9907400","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:38:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hNyZLK1NEMpBnLbyii2Ia/U2cCTS+s81S+zk/qjLUwlPtG6fpnrQivGlsQnM9ebZ+UBtFwxfMMnv0RFLLkwHCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T07:29:13.888219Z"},"content_sha256":"601a02d02d1628dbb535e52ea912369cf0307730c26205a53908915eedf165ae","schema_version":"1.0","event_id":"sha256:601a02d02d1628dbb535e52ea912369cf0307730c26205a53908915eedf165ae"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1999:PCLKL6BI5L2SII2ZQ4FH3A7DVV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Stability of Neutrino Mass Degeneracy","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Ernest Ma (UC Riverside)","submitted_at":"1999-07-16T19:18:56Z","abstract_excerpt":"Two neutrinos of Majorana masses $m_{1,2}$ with mixing angle $\\theta$ are unstable against radiative corrections in the limit $m_1 = m_2$, but are stable for $m_1 = -m_2$ (i.e. opposite CP eigenstates) with $\\theta = 45^\\circ$ which corresponds to an additional symmetry."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9907400","kind":"arxiv","version":2},"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":"2026-05-18T01:38:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"srDFx0K5QsH4DTerWXFEHz6D6J/NTqk4nZY8W0Zo3/acNcugV5cfnN1F9CBbdYxeuVxXK3AoxN6kf0lZE7HrCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T07:29:13.888575Z"},"content_sha256":"6ce063608a19d1e1fb1f0d484215d70da0b0d7af296ee10e9fc256f280180c7f","schema_version":"1.0","event_id":"sha256:6ce063608a19d1e1fb1f0d484215d70da0b0d7af296ee10e9fc256f280180c7f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PCLKL6BI5L2SII2ZQ4FH3A7DVV/bundle.json","state_url":"https://pith.science/pith/PCLKL6BI5L2SII2ZQ4FH3A7DVV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PCLKL6BI5L2SII2ZQ4FH3A7DVV/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":"2026-05-28T07:29:13Z","links":{"resolver":"https://pith.science/pith/PCLKL6BI5L2SII2ZQ4FH3A7DVV","bundle":"https://pith.science/pith/PCLKL6BI5L2SII2ZQ4FH3A7DVV/bundle.json","state":"https://pith.science/pith/PCLKL6BI5L2SII2ZQ4FH3A7DVV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PCLKL6BI5L2SII2ZQ4FH3A7DVV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1999:PCLKL6BI5L2SII2ZQ4FH3A7DVV","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":"4bb148be12fc785417aca0f5751a7d44ed957be93a7fcbbabb4e894cbc3b7e8b","cross_cats_sorted":[],"license":"","primary_cat":"hep-ph","submitted_at":"1999-07-16T19:18:56Z","title_canon_sha256":"f2b8e3077793c690492e7c24aab9f0f7f24acb2aa2992d38ef43a38ee3b0ee47"},"schema_version":"1.0","source":{"id":"hep-ph/9907400","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ph/9907400","created_at":"2026-05-18T01:38:55Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ph/9907400v2","created_at":"2026-05-18T01:38:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ph/9907400","created_at":"2026-05-18T01:38:55Z"},{"alias_kind":"pith_short_12","alias_value":"PCLKL6BI5L2S","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_16","alias_value":"PCLKL6BI5L2SII2Z","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_8","alias_value":"PCLKL6BI","created_at":"2026-05-18T12:25:49Z"}],"graph_snapshots":[{"event_id":"sha256:6ce063608a19d1e1fb1f0d484215d70da0b0d7af296ee10e9fc256f280180c7f","target":"graph","created_at":"2026-05-18T01:38:55Z","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":"Two neutrinos of Majorana masses $m_{1,2}$ with mixing angle $\\theta$ are unstable against radiative corrections in the limit $m_1 = m_2$, but are stable for $m_1 = -m_2$ (i.e. opposite CP eigenstates) with $\\theta = 45^\\circ$ which corresponds to an additional symmetry.","authors_text":"Ernest Ma (UC Riverside)","cross_cats":[],"headline":"","license":"","primary_cat":"hep-ph","submitted_at":"1999-07-16T19:18:56Z","title":"Stability of Neutrino Mass Degeneracy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9907400","kind":"arxiv","version":2},"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":"sha256:601a02d02d1628dbb535e52ea912369cf0307730c26205a53908915eedf165ae","target":"record","created_at":"2026-05-18T01:38:55Z","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":"4bb148be12fc785417aca0f5751a7d44ed957be93a7fcbbabb4e894cbc3b7e8b","cross_cats_sorted":[],"license":"","primary_cat":"hep-ph","submitted_at":"1999-07-16T19:18:56Z","title_canon_sha256":"f2b8e3077793c690492e7c24aab9f0f7f24acb2aa2992d38ef43a38ee3b0ee47"},"schema_version":"1.0","source":{"id":"hep-ph/9907400","kind":"arxiv","version":2}},"canonical_sha256":"7896a5f828eaf5242359870a7d83e3ad53bed9acb4aed87867bc624f2765a847","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7896a5f828eaf5242359870a7d83e3ad53bed9acb4aed87867bc624f2765a847","first_computed_at":"2026-05-18T01:38:55.918907Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:38:55.918907Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"FYbOfMgbyXwd5XoT3mHS6nx23Cb+XyAhn2s1rT6GRUvVaj69wxzNBXYHnwBJwHDLVsQsVMU3DLCZExdCPYyWBg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:38:55.919681Z","signed_message":"canonical_sha256_bytes"},"source_id":"hep-ph/9907400","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:601a02d02d1628dbb535e52ea912369cf0307730c26205a53908915eedf165ae","sha256:6ce063608a19d1e1fb1f0d484215d70da0b0d7af296ee10e9fc256f280180c7f"],"state_sha256":"7025aad460a65dacf0ff60a81cf89135bc409aec8387feefc5f44555692dbb5b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VWJJGQL434N3QzMnXJN5BqDGvYztN9sI2tX5WvNeXUHQmyVJhkfmPnNl9N12QOcP9FZ3hY3j0BnBEnd+GHTRAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T07:29:13.890483Z","bundle_sha256":"3a52680c08971b499cd61172cde3ec584e7a0df3b0ba921612835f4e80821991"}}