{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:Q7TR3BDZVSTVT67EZD2QKCLCBH","short_pith_number":"pith:Q7TR3BDZ","canonical_record":{"source":{"id":"1902.00344","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-02-01T14:15:51Z","cross_cats_sorted":[],"title_canon_sha256":"8c23cb0c71d8f5c09a17a6919d084fcfa577852719b71795e1c1989d63336081","abstract_canon_sha256":"06491000ba531aa608467caa4a68adf67b6d0a23e93ec269d6b41b6e0dfbeac8"},"schema_version":"1.0"},"canonical_sha256":"87e71d8479aca759fbe4c8f505096209e5483b24c63a8ffab75a77a7d2177473","source":{"kind":"arxiv","id":"1902.00344","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.00344","created_at":"2026-05-17T23:54:57Z"},{"alias_kind":"arxiv_version","alias_value":"1902.00344v1","created_at":"2026-05-17T23:54:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.00344","created_at":"2026-05-17T23:54:57Z"},{"alias_kind":"pith_short_12","alias_value":"Q7TR3BDZVSTV","created_at":"2026-05-18T12:33:27Z"},{"alias_kind":"pith_short_16","alias_value":"Q7TR3BDZVSTVT67E","created_at":"2026-05-18T12:33:27Z"},{"alias_kind":"pith_short_8","alias_value":"Q7TR3BDZ","created_at":"2026-05-18T12:33:27Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:Q7TR3BDZVSTVT67EZD2QKCLCBH","target":"record","payload":{"canonical_record":{"source":{"id":"1902.00344","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-02-01T14:15:51Z","cross_cats_sorted":[],"title_canon_sha256":"8c23cb0c71d8f5c09a17a6919d084fcfa577852719b71795e1c1989d63336081","abstract_canon_sha256":"06491000ba531aa608467caa4a68adf67b6d0a23e93ec269d6b41b6e0dfbeac8"},"schema_version":"1.0"},"canonical_sha256":"87e71d8479aca759fbe4c8f505096209e5483b24c63a8ffab75a77a7d2177473","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:54:57.707127Z","signature_b64":"3RMKKCWAnPuGVzRevAS9Sa7j0XDnS1T6S+QYxKxLYSeJVmbfkbkTYUkspDL9gpMWCWy0pG8dhtkRsnJ+vB4HDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"87e71d8479aca759fbe4c8f505096209e5483b24c63a8ffab75a77a7d2177473","last_reissued_at":"2026-05-17T23:54:57.706539Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:54:57.706539Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1902.00344","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":"2026-05-17T23:54:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qcDzJih6ViWEEN+johSzKd/mqexFWPMlIZuGagNTNhYQQwxD8tsKtsd/sCzYqwndAw4uIYfywBXOBvfivFgEDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T07:16:19.185482Z"},"content_sha256":"1e28b7d4140d73acdbb784c2664302d55789f3feb5dd191a1d86d733d3c35c94","schema_version":"1.0","event_id":"sha256:1e28b7d4140d73acdbb784c2664302d55789f3feb5dd191a1d86d733d3c35c94"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:Q7TR3BDZVSTVT67EZD2QKCLCBH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Standard Magnetic Field Production at Huairou Solar Observing Station","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"GangHua Lin, Jiangtao Su, Suo Liu, Xiaofan Wang, Xiao Yang, Yuanyong Deng","submitted_at":"2019-02-01T14:15:51Z","abstract_excerpt":"The regular solar observations are operated at Huairou Solar Observing Station (HSOS) since 1987, which make the construction of long-term magnetic field datasets available to understand solar magnetic field and cycles. There exist some inconveniences for solar physicist to use these data, because the data storage medium and format at HSOS experienced some changes. Additionally, the processes of magnetic field calibration are not easy to deal with for who are not familiar with these data. Here shows that the magnetic field of HSOS are further processed toward international standards, in order "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.00344","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":"2026-05-17T23:54:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Vxg0nXUX0t2soErx24d7JF2laZSwh3PQxklOVM9uppVOLday8yK4dj6ZgVP0kwrIEWEfVYn5FupNThvxULm2AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T07:16:19.186111Z"},"content_sha256":"e6218bc62f2416672e675d98458281d5dbd1dd196e0c1d1588e7110ab1777f68","schema_version":"1.0","event_id":"sha256:e6218bc62f2416672e675d98458281d5dbd1dd196e0c1d1588e7110ab1777f68"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Q7TR3BDZVSTVT67EZD2QKCLCBH/bundle.json","state_url":"https://pith.science/pith/Q7TR3BDZVSTVT67EZD2QKCLCBH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Q7TR3BDZVSTVT67EZD2QKCLCBH/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":"2026-06-09T07:16:19Z","links":{"resolver":"https://pith.science/pith/Q7TR3BDZVSTVT67EZD2QKCLCBH","bundle":"https://pith.science/pith/Q7TR3BDZVSTVT67EZD2QKCLCBH/bundle.json","state":"https://pith.science/pith/Q7TR3BDZVSTVT67EZD2QKCLCBH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Q7TR3BDZVSTVT67EZD2QKCLCBH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:Q7TR3BDZVSTVT67EZD2QKCLCBH","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":"06491000ba531aa608467caa4a68adf67b6d0a23e93ec269d6b41b6e0dfbeac8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-02-01T14:15:51Z","title_canon_sha256":"8c23cb0c71d8f5c09a17a6919d084fcfa577852719b71795e1c1989d63336081"},"schema_version":"1.0","source":{"id":"1902.00344","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.00344","created_at":"2026-05-17T23:54:57Z"},{"alias_kind":"arxiv_version","alias_value":"1902.00344v1","created_at":"2026-05-17T23:54:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.00344","created_at":"2026-05-17T23:54:57Z"},{"alias_kind":"pith_short_12","alias_value":"Q7TR3BDZVSTV","created_at":"2026-05-18T12:33:27Z"},{"alias_kind":"pith_short_16","alias_value":"Q7TR3BDZVSTVT67E","created_at":"2026-05-18T12:33:27Z"},{"alias_kind":"pith_short_8","alias_value":"Q7TR3BDZ","created_at":"2026-05-18T12:33:27Z"}],"graph_snapshots":[{"event_id":"sha256:e6218bc62f2416672e675d98458281d5dbd1dd196e0c1d1588e7110ab1777f68","target":"graph","created_at":"2026-05-17T23:54:57Z","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 regular solar observations are operated at Huairou Solar Observing Station (HSOS) since 1987, which make the construction of long-term magnetic field datasets available to understand solar magnetic field and cycles. There exist some inconveniences for solar physicist to use these data, because the data storage medium and format at HSOS experienced some changes. Additionally, the processes of magnetic field calibration are not easy to deal with for who are not familiar with these data. Here shows that the magnetic field of HSOS are further processed toward international standards, in order ","authors_text":"GangHua Lin, Jiangtao Su, Suo Liu, Xiaofan Wang, Xiao Yang, Yuanyong Deng","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-02-01T14:15:51Z","title":"Standard Magnetic Field Production at Huairou Solar Observing Station"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.00344","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":"sha256:1e28b7d4140d73acdbb784c2664302d55789f3feb5dd191a1d86d733d3c35c94","target":"record","created_at":"2026-05-17T23:54:57Z","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":"06491000ba531aa608467caa4a68adf67b6d0a23e93ec269d6b41b6e0dfbeac8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-02-01T14:15:51Z","title_canon_sha256":"8c23cb0c71d8f5c09a17a6919d084fcfa577852719b71795e1c1989d63336081"},"schema_version":"1.0","source":{"id":"1902.00344","kind":"arxiv","version":1}},"canonical_sha256":"87e71d8479aca759fbe4c8f505096209e5483b24c63a8ffab75a77a7d2177473","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"87e71d8479aca759fbe4c8f505096209e5483b24c63a8ffab75a77a7d2177473","first_computed_at":"2026-05-17T23:54:57.706539Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:54:57.706539Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"3RMKKCWAnPuGVzRevAS9Sa7j0XDnS1T6S+QYxKxLYSeJVmbfkbkTYUkspDL9gpMWCWy0pG8dhtkRsnJ+vB4HDA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:54:57.707127Z","signed_message":"canonical_sha256_bytes"},"source_id":"1902.00344","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1e28b7d4140d73acdbb784c2664302d55789f3feb5dd191a1d86d733d3c35c94","sha256:e6218bc62f2416672e675d98458281d5dbd1dd196e0c1d1588e7110ab1777f68"],"state_sha256":"7dd287b23d8209bb0180afc3ec3bef3a0058421fd1f115f05228efce1dac1041"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yI6gfnGJ+kTwAbkw617QYJrMVcr86FxutygRD8oJTvY+xg6jQQsm/aNv4jux9skM0asGc2P3Mn3IQC9CZFS6Cw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-09T07:16:19.189530Z","bundle_sha256":"3fcf15bdd8580c0b5397184548d5db0c18bf268889290273bfea4dfe82b3d2ed"}}