{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:LD7KUH7SQJA376PN2EQMDCD6F4","short_pith_number":"pith:LD7KUH7S","canonical_record":{"source":{"id":"1204.2816","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-04-12T19:20:54Z","cross_cats_sorted":[],"title_canon_sha256":"e0fe7f9452cf16838953b9b1b85aa7ed350003f4f49f1f7c1d6366cb71faa47e","abstract_canon_sha256":"3be46dcc5996976de1abb466a2f9cfa00e56091e16bd5449e0f483ba44fc9296"},"schema_version":"1.0"},"canonical_sha256":"58feaa1ff28241bff9edd120c1887e2f2ae258942069fca0a7d414d64fba4a4f","source":{"kind":"arxiv","id":"1204.2816","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1204.2816","created_at":"2026-05-18T01:57:53Z"},{"alias_kind":"arxiv_version","alias_value":"1204.2816v2","created_at":"2026-05-18T01:57:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1204.2816","created_at":"2026-05-18T01:57:53Z"},{"alias_kind":"pith_short_12","alias_value":"LD7KUH7SQJA3","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_16","alias_value":"LD7KUH7SQJA376PN","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_8","alias_value":"LD7KUH7S","created_at":"2026-05-18T12:27:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:LD7KUH7SQJA376PN2EQMDCD6F4","target":"record","payload":{"canonical_record":{"source":{"id":"1204.2816","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-04-12T19:20:54Z","cross_cats_sorted":[],"title_canon_sha256":"e0fe7f9452cf16838953b9b1b85aa7ed350003f4f49f1f7c1d6366cb71faa47e","abstract_canon_sha256":"3be46dcc5996976de1abb466a2f9cfa00e56091e16bd5449e0f483ba44fc9296"},"schema_version":"1.0"},"canonical_sha256":"58feaa1ff28241bff9edd120c1887e2f2ae258942069fca0a7d414d64fba4a4f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:57:53.018790Z","signature_b64":"ib8i5spv13SFgVYAw4941xofa/+jZ5L3HlGbK1REc6FCBgCeA7Ji3bgG+MHHnxZ717yhAoC6iuv/jTFVlvEsDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"58feaa1ff28241bff9edd120c1887e2f2ae258942069fca0a7d414d64fba4a4f","last_reissued_at":"2026-05-18T01:57:53.018071Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:57:53.018071Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1204.2816","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":"2026-05-18T01:57:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dKKjgOwLNT55oc/HjSfj1FOjeXhRgVhX7ojVOEHiqAZWrHPgaDHIlCBEKPQgjpdhcpnep9k4/LfulegUT83RAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T18:09:17.366961Z"},"content_sha256":"ea483bbcbee15b85236ec25b3313e3a4d12ca908ece1985b7940dc907612803f","schema_version":"1.0","event_id":"sha256:ea483bbcbee15b85236ec25b3313e3a4d12ca908ece1985b7940dc907612803f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:LD7KUH7SQJA376PN2EQMDCD6F4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Behavior of Solar Cycles 23 and 24 Revealed by Microwave Observations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"D. H. Hathaway, G. Michalek, K. Shibasaki, N. Gopalswamy, P. M\\\"akel\\\"a, S. Yashiro","submitted_at":"2012-04-12T19:20:54Z","abstract_excerpt":"Using magnetic and microwave butterfly diagrams, we compare the behavior of solar polar regions to show that (i) the polar magnetic field and the microwave brightness temperature during the solar minimum substantially diminished during the cycle 23/24 minimum compared to the 22/23 minimum. (ii) The polar microwave brightness temperature (b) seems to be a good proxy for the underlying magnetic field strength (B). The analysis indicates a relationship, B = 0.0067Tb - 70, where B is in G and Tb in K. (iii) Both the brightness temperature and the magnetic field strength show north-south asymmetry "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1204.2816","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":"2026-05-18T01:57:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yprrVQjJF4U2f+k75e7SjS+HVm1n5L0O6LothFU5auFvD8R9t+Ktr7sMdhnMtjpiC+oWiOalWDrJMCDTz1OWCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T18:09:17.367797Z"},"content_sha256":"fbdcfbb47ff7ae8580d65d91aa963cb7c320cbb92ea7e7912a7b8de851f7e2a3","schema_version":"1.0","event_id":"sha256:fbdcfbb47ff7ae8580d65d91aa963cb7c320cbb92ea7e7912a7b8de851f7e2a3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LD7KUH7SQJA376PN2EQMDCD6F4/bundle.json","state_url":"https://pith.science/pith/LD7KUH7SQJA376PN2EQMDCD6F4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LD7KUH7SQJA376PN2EQMDCD6F4/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":"2026-05-26T18:09:17Z","links":{"resolver":"https://pith.science/pith/LD7KUH7SQJA376PN2EQMDCD6F4","bundle":"https://pith.science/pith/LD7KUH7SQJA376PN2EQMDCD6F4/bundle.json","state":"https://pith.science/pith/LD7KUH7SQJA376PN2EQMDCD6F4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LD7KUH7SQJA376PN2EQMDCD6F4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:LD7KUH7SQJA376PN2EQMDCD6F4","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":"3be46dcc5996976de1abb466a2f9cfa00e56091e16bd5449e0f483ba44fc9296","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-04-12T19:20:54Z","title_canon_sha256":"e0fe7f9452cf16838953b9b1b85aa7ed350003f4f49f1f7c1d6366cb71faa47e"},"schema_version":"1.0","source":{"id":"1204.2816","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1204.2816","created_at":"2026-05-18T01:57:53Z"},{"alias_kind":"arxiv_version","alias_value":"1204.2816v2","created_at":"2026-05-18T01:57:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1204.2816","created_at":"2026-05-18T01:57:53Z"},{"alias_kind":"pith_short_12","alias_value":"LD7KUH7SQJA3","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_16","alias_value":"LD7KUH7SQJA376PN","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_8","alias_value":"LD7KUH7S","created_at":"2026-05-18T12:27:14Z"}],"graph_snapshots":[{"event_id":"sha256:fbdcfbb47ff7ae8580d65d91aa963cb7c320cbb92ea7e7912a7b8de851f7e2a3","target":"graph","created_at":"2026-05-18T01:57:53Z","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":"Using magnetic and microwave butterfly diagrams, we compare the behavior of solar polar regions to show that (i) the polar magnetic field and the microwave brightness temperature during the solar minimum substantially diminished during the cycle 23/24 minimum compared to the 22/23 minimum. (ii) The polar microwave brightness temperature (b) seems to be a good proxy for the underlying magnetic field strength (B). The analysis indicates a relationship, B = 0.0067Tb - 70, where B is in G and Tb in K. (iii) Both the brightness temperature and the magnetic field strength show north-south asymmetry ","authors_text":"D. H. Hathaway, G. Michalek, K. Shibasaki, N. Gopalswamy, P. M\\\"akel\\\"a, S. Yashiro","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-04-12T19:20:54Z","title":"Behavior of Solar Cycles 23 and 24 Revealed by Microwave Observations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1204.2816","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:ea483bbcbee15b85236ec25b3313e3a4d12ca908ece1985b7940dc907612803f","target":"record","created_at":"2026-05-18T01:57:53Z","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":"3be46dcc5996976de1abb466a2f9cfa00e56091e16bd5449e0f483ba44fc9296","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-04-12T19:20:54Z","title_canon_sha256":"e0fe7f9452cf16838953b9b1b85aa7ed350003f4f49f1f7c1d6366cb71faa47e"},"schema_version":"1.0","source":{"id":"1204.2816","kind":"arxiv","version":2}},"canonical_sha256":"58feaa1ff28241bff9edd120c1887e2f2ae258942069fca0a7d414d64fba4a4f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"58feaa1ff28241bff9edd120c1887e2f2ae258942069fca0a7d414d64fba4a4f","first_computed_at":"2026-05-18T01:57:53.018071Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:57:53.018071Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ib8i5spv13SFgVYAw4941xofa/+jZ5L3HlGbK1REc6FCBgCeA7Ji3bgG+MHHnxZ717yhAoC6iuv/jTFVlvEsDw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:57:53.018790Z","signed_message":"canonical_sha256_bytes"},"source_id":"1204.2816","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ea483bbcbee15b85236ec25b3313e3a4d12ca908ece1985b7940dc907612803f","sha256:fbdcfbb47ff7ae8580d65d91aa963cb7c320cbb92ea7e7912a7b8de851f7e2a3"],"state_sha256":"12f4bffdd83a5faefb856c77304c6464afb386d530a41883a12f803bd2429e2c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"c2Zq64S+WHCk0XnjsAJKUS7FwRCrchnDxSDnFmdpN1rn3+loQomDU6lP+Vpn6VXC2VpAfGZ7OcpSToz3zTE7CA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T18:09:17.371379Z","bundle_sha256":"64321fae3fa15df8f6fd6681e4b96fb60742976104198c5908f0a25c7ada3dfd"}}