{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:PIVRMIH6LX7Q6236JRJM5Z3NBD","short_pith_number":"pith:PIVRMIH6","canonical_record":{"source":{"id":"1703.06754","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-03-20T14:09:39Z","cross_cats_sorted":["physics.data-an","physics.space-ph"],"title_canon_sha256":"e457ee5175de57d0f463cc9107a08d2e16f72de256b15ef740731d287e52d44f","abstract_canon_sha256":"fcf44e9d1c9c119a89215a4713db1327ec37c784cf96356d14e86f49e50ddf7d"},"schema_version":"1.0"},"canonical_sha256":"7a2b1620fe5dff0f6b7e4c52cee76d08e151fe32473e9da9489041861af59e01","source":{"kind":"arxiv","id":"1703.06754","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1703.06754","created_at":"2026-05-18T00:00:13Z"},{"alias_kind":"arxiv_version","alias_value":"1703.06754v2","created_at":"2026-05-18T00:00:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1703.06754","created_at":"2026-05-18T00:00:13Z"},{"alias_kind":"pith_short_12","alias_value":"PIVRMIH6LX7Q","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_16","alias_value":"PIVRMIH6LX7Q6236","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_8","alias_value":"PIVRMIH6","created_at":"2026-05-18T12:31:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:PIVRMIH6LX7Q6236JRJM5Z3NBD","target":"record","payload":{"canonical_record":{"source":{"id":"1703.06754","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-03-20T14:09:39Z","cross_cats_sorted":["physics.data-an","physics.space-ph"],"title_canon_sha256":"e457ee5175de57d0f463cc9107a08d2e16f72de256b15ef740731d287e52d44f","abstract_canon_sha256":"fcf44e9d1c9c119a89215a4713db1327ec37c784cf96356d14e86f49e50ddf7d"},"schema_version":"1.0"},"canonical_sha256":"7a2b1620fe5dff0f6b7e4c52cee76d08e151fe32473e9da9489041861af59e01","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:00:13.692815Z","signature_b64":"lViZxe5FG0Gl+ar/pKv3iKEtrmvFgBqKEH7OK1pUUL4xw4GS38e+DMQu+d/sQAgNQtAZ9l7/CfLRfeSki6KTCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7a2b1620fe5dff0f6b7e4c52cee76d08e151fe32473e9da9489041861af59e01","last_reissued_at":"2026-05-18T00:00:13.692232Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:00:13.692232Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1703.06754","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":"2026-05-18T00:00:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0utJo5Stxu+LeWnpivKflfzhZGbm2TRR4xOcfVubToFoRIpVw7Vxdd8IVW5P0x/2MddhIN2dHBqVCfPLLymVDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T08:55:12.377496Z"},"content_sha256":"f62f024a140609d97134c9e76945fef9827f83156b2ae89be7d2a36fe709baf5","schema_version":"1.0","event_id":"sha256:f62f024a140609d97134c9e76945fef9827f83156b2ae89be7d2a36fe709baf5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:PIVRMIH6LX7Q6236JRJM5Z3NBD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Flare forecasting at the Met Office Space Weather Operations Centre","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.data-an","physics.space-ph"],"primary_cat":"astro-ph.SR","authors_text":"David R. Jackson, Michael Sharpe, Sophie A. Murray, Suzy Bingham","submitted_at":"2017-03-20T14:09:39Z","abstract_excerpt":"The Met Office Space Weather Operations Centre produces 24/7/365 space weather guidance, alerts, and forecasts to a wide range of government and commercial end users across the United Kingdom. Solar flare forecasts are one of its products, which are issued multiple times a day in two forms; forecasts for each active region on the solar disk over the next 24 hours, and full-disk forecasts for the next four days. Here the forecasting process is described in detail, as well as first verification of archived forecasts using methods commonly used in operational weather prediction. Real-time verific"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1703.06754","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":"2026-05-18T00:00:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FeUlDWLEOCJSkeET9Mhd4BXgXT8YQGDuj0sDAcF3fiIS65KI2C+h3VeITFqpTFXeKd/r9bx0ssFr+vGdOypYCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T08:55:12.377845Z"},"content_sha256":"5d40733996795ca0a66782eff6068ceb29753f0c36ac165d4bcc9d8f1138c6ef","schema_version":"1.0","event_id":"sha256:5d40733996795ca0a66782eff6068ceb29753f0c36ac165d4bcc9d8f1138c6ef"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PIVRMIH6LX7Q6236JRJM5Z3NBD/bundle.json","state_url":"https://pith.science/pith/PIVRMIH6LX7Q6236JRJM5Z3NBD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PIVRMIH6LX7Q6236JRJM5Z3NBD/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":"2026-06-03T08:55:12Z","links":{"resolver":"https://pith.science/pith/PIVRMIH6LX7Q6236JRJM5Z3NBD","bundle":"https://pith.science/pith/PIVRMIH6LX7Q6236JRJM5Z3NBD/bundle.json","state":"https://pith.science/pith/PIVRMIH6LX7Q6236JRJM5Z3NBD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PIVRMIH6LX7Q6236JRJM5Z3NBD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:PIVRMIH6LX7Q6236JRJM5Z3NBD","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":"fcf44e9d1c9c119a89215a4713db1327ec37c784cf96356d14e86f49e50ddf7d","cross_cats_sorted":["physics.data-an","physics.space-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-03-20T14:09:39Z","title_canon_sha256":"e457ee5175de57d0f463cc9107a08d2e16f72de256b15ef740731d287e52d44f"},"schema_version":"1.0","source":{"id":"1703.06754","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1703.06754","created_at":"2026-05-18T00:00:13Z"},{"alias_kind":"arxiv_version","alias_value":"1703.06754v2","created_at":"2026-05-18T00:00:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1703.06754","created_at":"2026-05-18T00:00:13Z"},{"alias_kind":"pith_short_12","alias_value":"PIVRMIH6LX7Q","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_16","alias_value":"PIVRMIH6LX7Q6236","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_8","alias_value":"PIVRMIH6","created_at":"2026-05-18T12:31:37Z"}],"graph_snapshots":[{"event_id":"sha256:5d40733996795ca0a66782eff6068ceb29753f0c36ac165d4bcc9d8f1138c6ef","target":"graph","created_at":"2026-05-18T00:00:13Z","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 Met Office Space Weather Operations Centre produces 24/7/365 space weather guidance, alerts, and forecasts to a wide range of government and commercial end users across the United Kingdom. Solar flare forecasts are one of its products, which are issued multiple times a day in two forms; forecasts for each active region on the solar disk over the next 24 hours, and full-disk forecasts for the next four days. Here the forecasting process is described in detail, as well as first verification of archived forecasts using methods commonly used in operational weather prediction. Real-time verific","authors_text":"David R. Jackson, Michael Sharpe, Sophie A. Murray, Suzy Bingham","cross_cats":["physics.data-an","physics.space-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-03-20T14:09:39Z","title":"Flare forecasting at the Met Office Space Weather Operations Centre"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1703.06754","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:f62f024a140609d97134c9e76945fef9827f83156b2ae89be7d2a36fe709baf5","target":"record","created_at":"2026-05-18T00:00:13Z","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":"fcf44e9d1c9c119a89215a4713db1327ec37c784cf96356d14e86f49e50ddf7d","cross_cats_sorted":["physics.data-an","physics.space-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-03-20T14:09:39Z","title_canon_sha256":"e457ee5175de57d0f463cc9107a08d2e16f72de256b15ef740731d287e52d44f"},"schema_version":"1.0","source":{"id":"1703.06754","kind":"arxiv","version":2}},"canonical_sha256":"7a2b1620fe5dff0f6b7e4c52cee76d08e151fe32473e9da9489041861af59e01","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7a2b1620fe5dff0f6b7e4c52cee76d08e151fe32473e9da9489041861af59e01","first_computed_at":"2026-05-18T00:00:13.692232Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:00:13.692232Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"lViZxe5FG0Gl+ar/pKv3iKEtrmvFgBqKEH7OK1pUUL4xw4GS38e+DMQu+d/sQAgNQtAZ9l7/CfLRfeSki6KTCw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:00:13.692815Z","signed_message":"canonical_sha256_bytes"},"source_id":"1703.06754","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f62f024a140609d97134c9e76945fef9827f83156b2ae89be7d2a36fe709baf5","sha256:5d40733996795ca0a66782eff6068ceb29753f0c36ac165d4bcc9d8f1138c6ef"],"state_sha256":"bad456af14b6e7796d8e5aaa16ee3294ba78568794e770f13e89fc5f685a8943"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"y0zZpQ2wcxvz43qf+MsheHWYhguiPleciQ7Yn9X7ICJdShcAS8BdOHb3qzU/SVLlBiRUH0r6i0/m25DfFNMxCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T08:55:12.379785Z","bundle_sha256":"c6b0a5b4d8da33f428daa56b441a479f0d4416f2c7e1dcdbbe84d27d622f9216"}}