{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:D3D722RU6QJSZWAKLCONIFWYIE","short_pith_number":"pith:D3D722RU","canonical_record":{"source":{"id":"1508.01603","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-08-07T05:03:52Z","cross_cats_sorted":[],"title_canon_sha256":"aebbd42eb497393f5e9537ef5c3cca729b81966e894b5fb5f4ea3255347c118b","abstract_canon_sha256":"a4a8a065d05c0b791b5345a0b1192f4eca93aa042d30e453e8377f7151499b59"},"schema_version":"1.0"},"canonical_sha256":"1ec7fd6a34f4132cd80a589cd416d8411994e3d3f7c96a9e2996f1e8f01e935a","source":{"kind":"arxiv","id":"1508.01603","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1508.01603","created_at":"2026-05-18T01:35:39Z"},{"alias_kind":"arxiv_version","alias_value":"1508.01603v1","created_at":"2026-05-18T01:35:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1508.01603","created_at":"2026-05-18T01:35:39Z"},{"alias_kind":"pith_short_12","alias_value":"D3D722RU6QJS","created_at":"2026-05-18T12:29:17Z"},{"alias_kind":"pith_short_16","alias_value":"D3D722RU6QJSZWAK","created_at":"2026-05-18T12:29:17Z"},{"alias_kind":"pith_short_8","alias_value":"D3D722RU","created_at":"2026-05-18T12:29:17Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:D3D722RU6QJSZWAKLCONIFWYIE","target":"record","payload":{"canonical_record":{"source":{"id":"1508.01603","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-08-07T05:03:52Z","cross_cats_sorted":[],"title_canon_sha256":"aebbd42eb497393f5e9537ef5c3cca729b81966e894b5fb5f4ea3255347c118b","abstract_canon_sha256":"a4a8a065d05c0b791b5345a0b1192f4eca93aa042d30e453e8377f7151499b59"},"schema_version":"1.0"},"canonical_sha256":"1ec7fd6a34f4132cd80a589cd416d8411994e3d3f7c96a9e2996f1e8f01e935a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:35:39.269812Z","signature_b64":"XmNyxEC7yUzl1UvmLcfTcF/JeMWdzYKTLsr2UUZXpYtTHYghq5Lje2HMx3tX74gup1BiQo2MPy1MDsMjNW25BA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1ec7fd6a34f4132cd80a589cd416d8411994e3d3f7c96a9e2996f1e8f01e935a","last_reissued_at":"2026-05-18T01:35:39.269130Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:35:39.269130Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1508.01603","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":"2026-05-18T01:35:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QF54IdmzfDtr2JeJT7VmNm8W4JdooSuiv8RNXBPNAL1kDE475j/fYoSERsdxPWny6UN0ZrB0OsGEYfY6xN/aAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T10:07:27.092036Z"},"content_sha256":"840f67e6cf68c6647f23033ed8ac5f3fafc4c905b5863104c9cfe9d4d8bc9bd8","schema_version":"1.0","event_id":"sha256:840f67e6cf68c6647f23033ed8ac5f3fafc4c905b5863104c9cfe9d4d8bc9bd8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:D3D722RU6QJSZWAKLCONIFWYIE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Mild Space Weather in Solar Cycle 24","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Grzegorz Michalek, Hong Xie, Nat Gopalswamy, Pertti Makela, Sachiko Akiyama, Seiji Yashiro","submitted_at":"2015-08-07T05:03:52Z","abstract_excerpt":"The space weather is extremely mild during solar cycle 24: the number of major geomagnetic storms and high-energy solar energetic particle events are at the lowest since the dawn of the space age. Solar wind measurements at 1 AU using Wind and ACE instruments have shown that there is a significant drop in the density, magnetic field, total pressure, and Alfven speed in the inner heliosphere as a result of the low solar activity. The drop in large space weather events is disproportionately high because the number of energetic coronal mass ejections that cause these events has not decreased sign"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1508.01603","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":"2026-05-18T01:35:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+J20HPRBqu7+MZbPm2BDCxRfgGOU64WD4ePQ+Gn9IaFASWb2aQ3tZqqys8HK914K+Vm8Sm6045+GagRtEr+SCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T10:07:27.092518Z"},"content_sha256":"48607a0736f61b2b7ce42d779738ddc471cb2b4367c0b78f773efdc9bec19b91","schema_version":"1.0","event_id":"sha256:48607a0736f61b2b7ce42d779738ddc471cb2b4367c0b78f773efdc9bec19b91"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/D3D722RU6QJSZWAKLCONIFWYIE/bundle.json","state_url":"https://pith.science/pith/D3D722RU6QJSZWAKLCONIFWYIE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/D3D722RU6QJSZWAKLCONIFWYIE/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":"2026-05-25T10:07:27Z","links":{"resolver":"https://pith.science/pith/D3D722RU6QJSZWAKLCONIFWYIE","bundle":"https://pith.science/pith/D3D722RU6QJSZWAKLCONIFWYIE/bundle.json","state":"https://pith.science/pith/D3D722RU6QJSZWAKLCONIFWYIE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/D3D722RU6QJSZWAKLCONIFWYIE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:D3D722RU6QJSZWAKLCONIFWYIE","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":"a4a8a065d05c0b791b5345a0b1192f4eca93aa042d30e453e8377f7151499b59","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-08-07T05:03:52Z","title_canon_sha256":"aebbd42eb497393f5e9537ef5c3cca729b81966e894b5fb5f4ea3255347c118b"},"schema_version":"1.0","source":{"id":"1508.01603","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1508.01603","created_at":"2026-05-18T01:35:39Z"},{"alias_kind":"arxiv_version","alias_value":"1508.01603v1","created_at":"2026-05-18T01:35:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1508.01603","created_at":"2026-05-18T01:35:39Z"},{"alias_kind":"pith_short_12","alias_value":"D3D722RU6QJS","created_at":"2026-05-18T12:29:17Z"},{"alias_kind":"pith_short_16","alias_value":"D3D722RU6QJSZWAK","created_at":"2026-05-18T12:29:17Z"},{"alias_kind":"pith_short_8","alias_value":"D3D722RU","created_at":"2026-05-18T12:29:17Z"}],"graph_snapshots":[{"event_id":"sha256:48607a0736f61b2b7ce42d779738ddc471cb2b4367c0b78f773efdc9bec19b91","target":"graph","created_at":"2026-05-18T01:35:39Z","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 space weather is extremely mild during solar cycle 24: the number of major geomagnetic storms and high-energy solar energetic particle events are at the lowest since the dawn of the space age. Solar wind measurements at 1 AU using Wind and ACE instruments have shown that there is a significant drop in the density, magnetic field, total pressure, and Alfven speed in the inner heliosphere as a result of the low solar activity. The drop in large space weather events is disproportionately high because the number of energetic coronal mass ejections that cause these events has not decreased sign","authors_text":"Grzegorz Michalek, Hong Xie, Nat Gopalswamy, Pertti Makela, Sachiko Akiyama, Seiji Yashiro","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-08-07T05:03:52Z","title":"The Mild Space Weather in Solar Cycle 24"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1508.01603","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":"sha256:840f67e6cf68c6647f23033ed8ac5f3fafc4c905b5863104c9cfe9d4d8bc9bd8","target":"record","created_at":"2026-05-18T01:35:39Z","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":"a4a8a065d05c0b791b5345a0b1192f4eca93aa042d30e453e8377f7151499b59","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-08-07T05:03:52Z","title_canon_sha256":"aebbd42eb497393f5e9537ef5c3cca729b81966e894b5fb5f4ea3255347c118b"},"schema_version":"1.0","source":{"id":"1508.01603","kind":"arxiv","version":1}},"canonical_sha256":"1ec7fd6a34f4132cd80a589cd416d8411994e3d3f7c96a9e2996f1e8f01e935a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1ec7fd6a34f4132cd80a589cd416d8411994e3d3f7c96a9e2996f1e8f01e935a","first_computed_at":"2026-05-18T01:35:39.269130Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:35:39.269130Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"XmNyxEC7yUzl1UvmLcfTcF/JeMWdzYKTLsr2UUZXpYtTHYghq5Lje2HMx3tX74gup1BiQo2MPy1MDsMjNW25BA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:35:39.269812Z","signed_message":"canonical_sha256_bytes"},"source_id":"1508.01603","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:840f67e6cf68c6647f23033ed8ac5f3fafc4c905b5863104c9cfe9d4d8bc9bd8","sha256:48607a0736f61b2b7ce42d779738ddc471cb2b4367c0b78f773efdc9bec19b91"],"state_sha256":"cf0122b4a82313d3fb763929e506ce111868b815b89de6972d28fc86d794bddf"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bpSaT1bikcAx6AYK6lf/6N2R5QyIakLMJqY6zIjy9Li5QxiJeA+Eu1ValGB1CLh6jIAo50o4LKkYKVMeQeGhCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T10:07:27.095705Z","bundle_sha256":"a9aaef9edc016ac9bef502814bd4f44b935a139c207555fab3dbb098fed75abd"}}