{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:CGTWCTTR5KS5EK67Q4ITXJTOMW","short_pith_number":"pith:CGTWCTTR","canonical_record":{"source":{"id":"1102.0965","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-02-04T16:40:19Z","cross_cats_sorted":[],"title_canon_sha256":"05a270f8ff2275130cfd4b74915166b35888f1a6a406e646652bca7ad3f50f20","abstract_canon_sha256":"4c797098cb6eaaeb7b2963355aef22fe65f5163de05cecd9f840928ceda5b9e2"},"schema_version":"1.0"},"canonical_sha256":"11a7614e71eaa5d22bdf87113ba66e6589671e793fc007f63837e5a7f9688870","source":{"kind":"arxiv","id":"1102.0965","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1102.0965","created_at":"2026-05-18T04:30:03Z"},{"alias_kind":"arxiv_version","alias_value":"1102.0965v1","created_at":"2026-05-18T04:30:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1102.0965","created_at":"2026-05-18T04:30:03Z"},{"alias_kind":"pith_short_12","alias_value":"CGTWCTTR5KS5","created_at":"2026-05-18T12:26:26Z"},{"alias_kind":"pith_short_16","alias_value":"CGTWCTTR5KS5EK67","created_at":"2026-05-18T12:26:26Z"},{"alias_kind":"pith_short_8","alias_value":"CGTWCTTR","created_at":"2026-05-18T12:26:26Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:CGTWCTTR5KS5EK67Q4ITXJTOMW","target":"record","payload":{"canonical_record":{"source":{"id":"1102.0965","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-02-04T16:40:19Z","cross_cats_sorted":[],"title_canon_sha256":"05a270f8ff2275130cfd4b74915166b35888f1a6a406e646652bca7ad3f50f20","abstract_canon_sha256":"4c797098cb6eaaeb7b2963355aef22fe65f5163de05cecd9f840928ceda5b9e2"},"schema_version":"1.0"},"canonical_sha256":"11a7614e71eaa5d22bdf87113ba66e6589671e793fc007f63837e5a7f9688870","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:30:03.308224Z","signature_b64":"bFF8kUqzWPzD7L5D3b07szzmBZX5e/OCOIi6YWdaWe06a2B5asJdJIMPLSxiLrBDIjjKd5V1ZgsqCpQYTL1xCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"11a7614e71eaa5d22bdf87113ba66e6589671e793fc007f63837e5a7f9688870","last_reissued_at":"2026-05-18T04:30:03.307832Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:30:03.307832Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1102.0965","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":"2026-05-18T04:30:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yqq1YROvlTz8OzGxMWoSq2m85vmARl1jMR/2kFnnmgDB3WjJOHidzTautqohHkqyM1rc8qvrxunQCAjr10g7Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-24T13:06:37.088166Z"},"content_sha256":"e9517ad2578bbd79fec2d962b010055fe22e7a0546fc5fbb30fa8ea3615de95c","schema_version":"1.0","event_id":"sha256:e9517ad2578bbd79fec2d962b010055fe22e7a0546fc5fbb30fa8ea3615de95c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:CGTWCTTR5KS5EK67Q4ITXJTOMW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"On the Formation of Penumbrae as Observed with the German VTT, SOHO/MDI, and SDO/HMI","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Nazaret Bello Gonzalez, Reza Rezaei, Rolf Schlichenmaier","submitted_at":"2011-02-04T16:40:19Z","abstract_excerpt":"Solar magnetic fields are generated in the solar interior and pop up at the solar surface to form active regions. As the magnetic field appears on the surface, it forms various structures like small magnetic elements, pores, and sunspots. The nature of these formation processes is largely unknown. In this contribution we elaborate on the formation of sunspots and particularly on the formation of penumbrae. We report on observations that we obtained at the German VTT on July 4, 2009 on the formation of the spot in AR 11024. This data set is accomplished with data from SOHO/MDI which offers an e"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1102.0965","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":"2026-05-18T04:30:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"86Zup/u/ASGpPlib5/Ypn7WlhnTNg7q7LRw5M93FdClkx1GZs1VpSTlsi1+0o1eUZvQtfmBmUewCDCcxkw+aBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-24T13:06:37.088854Z"},"content_sha256":"8af3d75f10294e8cc38570da6a6166cf8f065c5e3c2880d14288e5a513424a4e","schema_version":"1.0","event_id":"sha256:8af3d75f10294e8cc38570da6a6166cf8f065c5e3c2880d14288e5a513424a4e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CGTWCTTR5KS5EK67Q4ITXJTOMW/bundle.json","state_url":"https://pith.science/pith/CGTWCTTR5KS5EK67Q4ITXJTOMW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CGTWCTTR5KS5EK67Q4ITXJTOMW/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":"2026-05-24T13:06:37Z","links":{"resolver":"https://pith.science/pith/CGTWCTTR5KS5EK67Q4ITXJTOMW","bundle":"https://pith.science/pith/CGTWCTTR5KS5EK67Q4ITXJTOMW/bundle.json","state":"https://pith.science/pith/CGTWCTTR5KS5EK67Q4ITXJTOMW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CGTWCTTR5KS5EK67Q4ITXJTOMW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:CGTWCTTR5KS5EK67Q4ITXJTOMW","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":"4c797098cb6eaaeb7b2963355aef22fe65f5163de05cecd9f840928ceda5b9e2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-02-04T16:40:19Z","title_canon_sha256":"05a270f8ff2275130cfd4b74915166b35888f1a6a406e646652bca7ad3f50f20"},"schema_version":"1.0","source":{"id":"1102.0965","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1102.0965","created_at":"2026-05-18T04:30:03Z"},{"alias_kind":"arxiv_version","alias_value":"1102.0965v1","created_at":"2026-05-18T04:30:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1102.0965","created_at":"2026-05-18T04:30:03Z"},{"alias_kind":"pith_short_12","alias_value":"CGTWCTTR5KS5","created_at":"2026-05-18T12:26:26Z"},{"alias_kind":"pith_short_16","alias_value":"CGTWCTTR5KS5EK67","created_at":"2026-05-18T12:26:26Z"},{"alias_kind":"pith_short_8","alias_value":"CGTWCTTR","created_at":"2026-05-18T12:26:26Z"}],"graph_snapshots":[{"event_id":"sha256:8af3d75f10294e8cc38570da6a6166cf8f065c5e3c2880d14288e5a513424a4e","target":"graph","created_at":"2026-05-18T04:30:03Z","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":"Solar magnetic fields are generated in the solar interior and pop up at the solar surface to form active regions. As the magnetic field appears on the surface, it forms various structures like small magnetic elements, pores, and sunspots. The nature of these formation processes is largely unknown. In this contribution we elaborate on the formation of sunspots and particularly on the formation of penumbrae. We report on observations that we obtained at the German VTT on July 4, 2009 on the formation of the spot in AR 11024. This data set is accomplished with data from SOHO/MDI which offers an e","authors_text":"Nazaret Bello Gonzalez, Reza Rezaei, Rolf Schlichenmaier","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-02-04T16:40:19Z","title":"On the Formation of Penumbrae as Observed with the German VTT, SOHO/MDI, and SDO/HMI"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1102.0965","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:e9517ad2578bbd79fec2d962b010055fe22e7a0546fc5fbb30fa8ea3615de95c","target":"record","created_at":"2026-05-18T04:30:03Z","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":"4c797098cb6eaaeb7b2963355aef22fe65f5163de05cecd9f840928ceda5b9e2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2011-02-04T16:40:19Z","title_canon_sha256":"05a270f8ff2275130cfd4b74915166b35888f1a6a406e646652bca7ad3f50f20"},"schema_version":"1.0","source":{"id":"1102.0965","kind":"arxiv","version":1}},"canonical_sha256":"11a7614e71eaa5d22bdf87113ba66e6589671e793fc007f63837e5a7f9688870","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"11a7614e71eaa5d22bdf87113ba66e6589671e793fc007f63837e5a7f9688870","first_computed_at":"2026-05-18T04:30:03.307832Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:30:03.307832Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"bFF8kUqzWPzD7L5D3b07szzmBZX5e/OCOIi6YWdaWe06a2B5asJdJIMPLSxiLrBDIjjKd5V1ZgsqCpQYTL1xCw==","signature_status":"signed_v1","signed_at":"2026-05-18T04:30:03.308224Z","signed_message":"canonical_sha256_bytes"},"source_id":"1102.0965","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e9517ad2578bbd79fec2d962b010055fe22e7a0546fc5fbb30fa8ea3615de95c","sha256:8af3d75f10294e8cc38570da6a6166cf8f065c5e3c2880d14288e5a513424a4e"],"state_sha256":"5005b13757e84cda3cec6fee76de3256c52121253086cb71effe1740183731e1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Th5Rwhxuh5Hp6XHq9GqkIr56X9vGgVzYB2yvlT1VLFUe63SR48NCFtrv+MxHL8Kuwx+bGKKklI5t0jAVRBxDCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-24T13:06:37.092348Z","bundle_sha256":"25b3060677ac608cd2c5c5ba147369ebfedd78ee7dee593a271a9bdbec7117cd"}}