{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:M5EY4IEHH3ZUGW6UZA54Z3ZZXV","short_pith_number":"pith:M5EY4IEH","canonical_record":{"source":{"id":"1810.03795","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-10-09T03:29:48Z","cross_cats_sorted":[],"title_canon_sha256":"5921828c0cb18fcf8e7a63a0ad898f6f4123303a2c251122efd4feb50e240ebe","abstract_canon_sha256":"091b87261de148c9974878c00dd14e7e6ce650ac10a42856b92526fd23704b52"},"schema_version":"1.0"},"canonical_sha256":"67498e20873ef3435bd4c83bccef39bd70581f30e414931c954c71748b423b6d","source":{"kind":"arxiv","id":"1810.03795","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1810.03795","created_at":"2026-05-17T23:59:49Z"},{"alias_kind":"arxiv_version","alias_value":"1810.03795v1","created_at":"2026-05-17T23:59:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1810.03795","created_at":"2026-05-17T23:59:49Z"},{"alias_kind":"pith_short_12","alias_value":"M5EY4IEHH3ZU","created_at":"2026-05-18T12:32:37Z"},{"alias_kind":"pith_short_16","alias_value":"M5EY4IEHH3ZUGW6U","created_at":"2026-05-18T12:32:37Z"},{"alias_kind":"pith_short_8","alias_value":"M5EY4IEH","created_at":"2026-05-18T12:32:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:M5EY4IEHH3ZUGW6UZA54Z3ZZXV","target":"record","payload":{"canonical_record":{"source":{"id":"1810.03795","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-10-09T03:29:48Z","cross_cats_sorted":[],"title_canon_sha256":"5921828c0cb18fcf8e7a63a0ad898f6f4123303a2c251122efd4feb50e240ebe","abstract_canon_sha256":"091b87261de148c9974878c00dd14e7e6ce650ac10a42856b92526fd23704b52"},"schema_version":"1.0"},"canonical_sha256":"67498e20873ef3435bd4c83bccef39bd70581f30e414931c954c71748b423b6d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:59:49.225159Z","signature_b64":"cArqiBArR4wuhD0tQSOUOtMJx3ycVgeXiy2tvIBIv2Fa50/Ce/RDrJ8VDjPJwzS2RCdoGvWcrdps+WWeWdnUCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"67498e20873ef3435bd4c83bccef39bd70581f30e414931c954c71748b423b6d","last_reissued_at":"2026-05-17T23:59:49.224725Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:59:49.224725Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1810.03795","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":"2026-05-17T23:59:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Gi531NOWeY2fRKRD8HaXUGd0BxZE4vk/VA9OuiK3yav5suaglitjHthkaNHbXwBLEBsdL8CfsFsHEySQ8bsvDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T03:44:36.222934Z"},"content_sha256":"12cb49660fae998b055c6c8f63305686fb5cd41346e8c67f8c27777fc7739115","schema_version":"1.0","event_id":"sha256:12cb49660fae998b055c6c8f63305686fb5cd41346e8c67f8c27777fc7739115"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:M5EY4IEHH3ZUGW6UZA54Z3ZZXV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Magnetic Field Modeling of hot channels in Four Flare/CME Events","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Adriaan van Ballegooijen, Haisheng Ji, Tie Liu, Xin Cheng, Yingna Su","submitted_at":"2018-10-09T03:29:48Z","abstract_excerpt":"We investigate the formation and magnetic topology of four flare/CME events with filament-sigmoid systems, in which the sigmoidal hot channels are located above the filaments, and they appear in pairs prior to eruption.} The formation of hot channels usually takes several to dozens of hours during which two J-shape sheared arcades gradually evolve into sigmoidal hot channels, then they keep stable for tens of minutes or hours and erupt. While the low-lying filaments show no significant change. \\textbf{We construct a series of magnetic field models and find that the best-fit preflare models con"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1810.03795","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":"2026-05-17T23:59:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bSR28rhDmj/VD/OcNv1zggXWQccQOUkNF87ov87B2LsVH8k1P9HOGbIkNGDnxi4rElf4mRMPNADr6Euap/paBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T03:44:36.223625Z"},"content_sha256":"39a8ffcb189b2b4a7250a8f304f36e42c0845bb2ea4bb02fcdbd7a45702295c9","schema_version":"1.0","event_id":"sha256:39a8ffcb189b2b4a7250a8f304f36e42c0845bb2ea4bb02fcdbd7a45702295c9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/M5EY4IEHH3ZUGW6UZA54Z3ZZXV/bundle.json","state_url":"https://pith.science/pith/M5EY4IEHH3ZUGW6UZA54Z3ZZXV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/M5EY4IEHH3ZUGW6UZA54Z3ZZXV/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":"2026-06-05T03:44:36Z","links":{"resolver":"https://pith.science/pith/M5EY4IEHH3ZUGW6UZA54Z3ZZXV","bundle":"https://pith.science/pith/M5EY4IEHH3ZUGW6UZA54Z3ZZXV/bundle.json","state":"https://pith.science/pith/M5EY4IEHH3ZUGW6UZA54Z3ZZXV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/M5EY4IEHH3ZUGW6UZA54Z3ZZXV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:M5EY4IEHH3ZUGW6UZA54Z3ZZXV","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":"091b87261de148c9974878c00dd14e7e6ce650ac10a42856b92526fd23704b52","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-10-09T03:29:48Z","title_canon_sha256":"5921828c0cb18fcf8e7a63a0ad898f6f4123303a2c251122efd4feb50e240ebe"},"schema_version":"1.0","source":{"id":"1810.03795","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1810.03795","created_at":"2026-05-17T23:59:49Z"},{"alias_kind":"arxiv_version","alias_value":"1810.03795v1","created_at":"2026-05-17T23:59:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1810.03795","created_at":"2026-05-17T23:59:49Z"},{"alias_kind":"pith_short_12","alias_value":"M5EY4IEHH3ZU","created_at":"2026-05-18T12:32:37Z"},{"alias_kind":"pith_short_16","alias_value":"M5EY4IEHH3ZUGW6U","created_at":"2026-05-18T12:32:37Z"},{"alias_kind":"pith_short_8","alias_value":"M5EY4IEH","created_at":"2026-05-18T12:32:37Z"}],"graph_snapshots":[{"event_id":"sha256:39a8ffcb189b2b4a7250a8f304f36e42c0845bb2ea4bb02fcdbd7a45702295c9","target":"graph","created_at":"2026-05-17T23:59:49Z","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 investigate the formation and magnetic topology of four flare/CME events with filament-sigmoid systems, in which the sigmoidal hot channels are located above the filaments, and they appear in pairs prior to eruption.} The formation of hot channels usually takes several to dozens of hours during which two J-shape sheared arcades gradually evolve into sigmoidal hot channels, then they keep stable for tens of minutes or hours and erupt. While the low-lying filaments show no significant change. \\textbf{We construct a series of magnetic field models and find that the best-fit preflare models con","authors_text":"Adriaan van Ballegooijen, Haisheng Ji, Tie Liu, Xin Cheng, Yingna Su","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-10-09T03:29:48Z","title":"Magnetic Field Modeling of hot channels in Four Flare/CME Events"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1810.03795","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":"sha256:12cb49660fae998b055c6c8f63305686fb5cd41346e8c67f8c27777fc7739115","target":"record","created_at":"2026-05-17T23:59:49Z","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":"091b87261de148c9974878c00dd14e7e6ce650ac10a42856b92526fd23704b52","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-10-09T03:29:48Z","title_canon_sha256":"5921828c0cb18fcf8e7a63a0ad898f6f4123303a2c251122efd4feb50e240ebe"},"schema_version":"1.0","source":{"id":"1810.03795","kind":"arxiv","version":1}},"canonical_sha256":"67498e20873ef3435bd4c83bccef39bd70581f30e414931c954c71748b423b6d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"67498e20873ef3435bd4c83bccef39bd70581f30e414931c954c71748b423b6d","first_computed_at":"2026-05-17T23:59:49.224725Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:59:49.224725Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"cArqiBArR4wuhD0tQSOUOtMJx3ycVgeXiy2tvIBIv2Fa50/Ce/RDrJ8VDjPJwzS2RCdoGvWcrdps+WWeWdnUCw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:59:49.225159Z","signed_message":"canonical_sha256_bytes"},"source_id":"1810.03795","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:12cb49660fae998b055c6c8f63305686fb5cd41346e8c67f8c27777fc7739115","sha256:39a8ffcb189b2b4a7250a8f304f36e42c0845bb2ea4bb02fcdbd7a45702295c9"],"state_sha256":"4350dc26821e9743cb5b3a197ba0fa1e77a70ef923cedd44e32b4eee06e0c1f0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xbN8/3+qNaPfqSX73peRqaTSlUG5Rib2Y7913ICXF7RJx21fWHqcJAC1vIiqvIa7PdVAPwZC3jmcRGs3id+iCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T03:44:36.227481Z","bundle_sha256":"c7eb6cb03d9c0aea9d3ac3f0de9eb210f4da59199b0f44e8da433dbc7474a444"}}