{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:377IM6F2C6NC43GLKT5WQYX2FH","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":"3b39128aeb13b6b18954380fb5c6a57763a061488ea339c8f1564c86332ebc12","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-05-17T13:05:49Z","title_canon_sha256":"32bdc8156aedc59114d93a552eb12a0b3c4f20f15e7ead3a4d9fab216375c68e"},"schema_version":"1.0","source":{"id":"1605.05149","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1605.05149","created_at":"2026-05-18T01:03:18Z"},{"alias_kind":"arxiv_version","alias_value":"1605.05149v1","created_at":"2026-05-18T01:03:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1605.05149","created_at":"2026-05-18T01:03:18Z"},{"alias_kind":"pith_short_12","alias_value":"377IM6F2C6NC","created_at":"2026-05-18T12:29:55Z"},{"alias_kind":"pith_short_16","alias_value":"377IM6F2C6NC43GL","created_at":"2026-05-18T12:29:55Z"},{"alias_kind":"pith_short_8","alias_value":"377IM6F2","created_at":"2026-05-18T12:29:55Z"}],"graph_snapshots":[{"event_id":"sha256:a21ff6efa9bd04ae816aa1245760f68a1aab636bcd05c056108676473ffbadbb","target":"graph","created_at":"2026-05-18T01:03:18Z","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":"We use 5 test data series to quantify putative discontinuities around 1946 in 5 annual-mean sunspot number or group number sequences. The series tested are: the original and new versions of the Wolf/Zurich/International sunspot number composite [$R_{ISNv1}$ and $R_{ISNv2}$] ; the corrected version of $R_{ISNv1}$ [$R_C$]; the backbone group number [$R_{BB}$]; and the group number composite [$R_{UEA}$]. The test data are: the group number $N_G$ and total sunspot area $A_G$ from the RGO photoheliographic data; the CaK index from re-analysis of MWO CaII K spectroheliograms; the group number from t","authors_text":"Luke A. Barnard, Mathew J. Owens, Mike Lockwood","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-05-17T13:05:49Z","title":"Tests of sunspot number sequences: 4. Discontinuities around 1946 in various sunspot number and sunspot group number reconstructions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1605.05149","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":"sha256:68ffd8de9149ff084604b8c1f85028593e02c9c5aebec6e673c78aeb61b94587","target":"record","created_at":"2026-05-18T01:03:18Z","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":"3b39128aeb13b6b18954380fb5c6a57763a061488ea339c8f1564c86332ebc12","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-05-17T13:05:49Z","title_canon_sha256":"32bdc8156aedc59114d93a552eb12a0b3c4f20f15e7ead3a4d9fab216375c68e"},"schema_version":"1.0","source":{"id":"1605.05149","kind":"arxiv","version":1}},"canonical_sha256":"dffe8678ba179a2e6ccb54fb6862fa29df2fc32044190b6ac879bc6a86753966","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"dffe8678ba179a2e6ccb54fb6862fa29df2fc32044190b6ac879bc6a86753966","first_computed_at":"2026-05-18T01:03:18.970497Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:03:18.970497Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"INjAy1+XymYKEJLrEn4KCaWHxP/77Gb1UXD/2qrHGJxQtrBsEi8QlJ4Iq/oI3GXIAZjNbxBuWEogpojmjZAdDg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:03:18.971063Z","signed_message":"canonical_sha256_bytes"},"source_id":"1605.05149","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:68ffd8de9149ff084604b8c1f85028593e02c9c5aebec6e673c78aeb61b94587","sha256:a21ff6efa9bd04ae816aa1245760f68a1aab636bcd05c056108676473ffbadbb"],"state_sha256":"9e5e33dd60fcd6dd53183a7935faecb0868655213248d069e1acd78e8eac226d"}