{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:WUM6L5UHOBO5HQN7ZJYUMIBBMR","short_pith_number":"pith:WUM6L5UH","canonical_record":{"source":{"id":"2101.11321","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2021-01-27T11:15:21Z","cross_cats_sorted":[],"title_canon_sha256":"149b280bfda21a1f3c3faf8bb61a2d66498dc7a025f897954f7820437974a43d","abstract_canon_sha256":"c06b2a033e4085b4b9f683bc4647ee1e87e8ffaf59c3a0c7000d1bbe02674cbe"},"schema_version":"1.0"},"canonical_sha256":"b519e5f687705dd3c1bfca71462021647172a8930bdf710abb97af2b3e2218da","source":{"kind":"arxiv","id":"2101.11321","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2101.11321","created_at":"2026-07-05T02:31:50Z"},{"alias_kind":"arxiv_version","alias_value":"2101.11321v1","created_at":"2026-07-05T02:31:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2101.11321","created_at":"2026-07-05T02:31:50Z"},{"alias_kind":"pith_short_12","alias_value":"WUM6L5UHOBO5","created_at":"2026-07-05T02:31:50Z"},{"alias_kind":"pith_short_16","alias_value":"WUM6L5UHOBO5HQN7","created_at":"2026-07-05T02:31:50Z"},{"alias_kind":"pith_short_8","alias_value":"WUM6L5UH","created_at":"2026-07-05T02:31:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:WUM6L5UHOBO5HQN7ZJYUMIBBMR","target":"record","payload":{"canonical_record":{"source":{"id":"2101.11321","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2021-01-27T11:15:21Z","cross_cats_sorted":[],"title_canon_sha256":"149b280bfda21a1f3c3faf8bb61a2d66498dc7a025f897954f7820437974a43d","abstract_canon_sha256":"c06b2a033e4085b4b9f683bc4647ee1e87e8ffaf59c3a0c7000d1bbe02674cbe"},"schema_version":"1.0"},"canonical_sha256":"b519e5f687705dd3c1bfca71462021647172a8930bdf710abb97af2b3e2218da","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:31:50.017231Z","signature_b64":"CbR3MiIJBgeEyWEG8OO/YhElpBenzxnLZmqjTt4NSPWiWoDeMs/y4aJ+m9NXVexNr6nMt+pDe8QucosKJ0IJDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b519e5f687705dd3c1bfca71462021647172a8930bdf710abb97af2b3e2218da","last_reissued_at":"2026-07-05T02:31:50.016701Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:31:50.016701Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2101.11321","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":"2026-07-05T02:31:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"F7e+6pfiK9vQxnqKEmjxwodoYEQq1nZgpZfm2toqEz9CB/uOrQmQ0wOGyqNECHcgkHk9LqOfmCOAae/Z9b2xCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T22:50:19.870138Z"},"content_sha256":"8794173a40fcc57724efb2f448ef1f302a15e5c8541bb666bb97645b01c125cf","schema_version":"1.0","event_id":"sha256:8794173a40fcc57724efb2f448ef1f302a15e5c8541bb666bb97645b01c125cf"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:WUM6L5UHOBO5HQN7ZJYUMIBBMR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Signatures of ubiquitous magnetic reconnection in the deep atmosphere of sunspot penumbrae","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"J. Joshi, L. H. M. Rouppe van der Voort, S. Bose, V. M. J. Henriques","submitted_at":"2021-01-27T11:15:21Z","abstract_excerpt":"Ellerman bombs are regions with enhanced Balmer line wing emission and mark magnetic reconnection in the deep solar atmosphere in active regions and quiet Sun. They are often found in regions where opposite magnetic polarities are in close proximity. Recent high resolution observations suggest that Ellerman bombs are more prevalent than thought before. We aim to determine the occurrence of Ellerman bombs in the penumbra of sunspots. We analyze high spatial resolution observations of sunspots in the Balmer H-alpha and H-beta lines as well as auxiliary continuum channels obtained with the Swedis"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2101.11321","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2101.11321/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T02:31:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WwlPxx4+MW2yuDNoteBgvB+z5WKk20b5kEsDFEzOR2X7Ml/4jfk3dBVFF6vswRO8VcQ/I3sjydlg1FIAGyn0Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T22:50:19.870777Z"},"content_sha256":"e97ec196a2c46cecedf55ab0427508eb319f026390931c2ac2a8442b48d16b5b","schema_version":"1.0","event_id":"sha256:e97ec196a2c46cecedf55ab0427508eb319f026390931c2ac2a8442b48d16b5b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WUM6L5UHOBO5HQN7ZJYUMIBBMR/bundle.json","state_url":"https://pith.science/pith/WUM6L5UHOBO5HQN7ZJYUMIBBMR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WUM6L5UHOBO5HQN7ZJYUMIBBMR/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":"2026-08-18T22:50:19Z","links":{"resolver":"https://pith.science/pith/WUM6L5UHOBO5HQN7ZJYUMIBBMR","bundle":"https://pith.science/pith/WUM6L5UHOBO5HQN7ZJYUMIBBMR/bundle.json","state":"https://pith.science/pith/WUM6L5UHOBO5HQN7ZJYUMIBBMR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WUM6L5UHOBO5HQN7ZJYUMIBBMR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:WUM6L5UHOBO5HQN7ZJYUMIBBMR","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":"c06b2a033e4085b4b9f683bc4647ee1e87e8ffaf59c3a0c7000d1bbe02674cbe","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2021-01-27T11:15:21Z","title_canon_sha256":"149b280bfda21a1f3c3faf8bb61a2d66498dc7a025f897954f7820437974a43d"},"schema_version":"1.0","source":{"id":"2101.11321","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2101.11321","created_at":"2026-07-05T02:31:50Z"},{"alias_kind":"arxiv_version","alias_value":"2101.11321v1","created_at":"2026-07-05T02:31:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2101.11321","created_at":"2026-07-05T02:31:50Z"},{"alias_kind":"pith_short_12","alias_value":"WUM6L5UHOBO5","created_at":"2026-07-05T02:31:50Z"},{"alias_kind":"pith_short_16","alias_value":"WUM6L5UHOBO5HQN7","created_at":"2026-07-05T02:31:50Z"},{"alias_kind":"pith_short_8","alias_value":"WUM6L5UH","created_at":"2026-07-05T02:31:50Z"}],"graph_snapshots":[{"event_id":"sha256:e97ec196a2c46cecedf55ab0427508eb319f026390931c2ac2a8442b48d16b5b","target":"graph","created_at":"2026-07-05T02:31:50Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2101.11321/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Ellerman bombs are regions with enhanced Balmer line wing emission and mark magnetic reconnection in the deep solar atmosphere in active regions and quiet Sun. They are often found in regions where opposite magnetic polarities are in close proximity. Recent high resolution observations suggest that Ellerman bombs are more prevalent than thought before. We aim to determine the occurrence of Ellerman bombs in the penumbra of sunspots. We analyze high spatial resolution observations of sunspots in the Balmer H-alpha and H-beta lines as well as auxiliary continuum channels obtained with the Swedis","authors_text":"J. Joshi, L. H. M. Rouppe van der Voort, S. Bose, V. M. J. Henriques","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2021-01-27T11:15:21Z","title":"Signatures of ubiquitous magnetic reconnection in the deep atmosphere of sunspot penumbrae"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2101.11321","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":"sha256:8794173a40fcc57724efb2f448ef1f302a15e5c8541bb666bb97645b01c125cf","target":"record","created_at":"2026-07-05T02:31:50Z","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":"c06b2a033e4085b4b9f683bc4647ee1e87e8ffaf59c3a0c7000d1bbe02674cbe","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2021-01-27T11:15:21Z","title_canon_sha256":"149b280bfda21a1f3c3faf8bb61a2d66498dc7a025f897954f7820437974a43d"},"schema_version":"1.0","source":{"id":"2101.11321","kind":"arxiv","version":1}},"canonical_sha256":"b519e5f687705dd3c1bfca71462021647172a8930bdf710abb97af2b3e2218da","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b519e5f687705dd3c1bfca71462021647172a8930bdf710abb97af2b3e2218da","first_computed_at":"2026-07-05T02:31:50.016701Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:31:50.016701Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"CbR3MiIJBgeEyWEG8OO/YhElpBenzxnLZmqjTt4NSPWiWoDeMs/y4aJ+m9NXVexNr6nMt+pDe8QucosKJ0IJDw==","signature_status":"signed_v1","signed_at":"2026-07-05T02:31:50.017231Z","signed_message":"canonical_sha256_bytes"},"source_id":"2101.11321","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8794173a40fcc57724efb2f448ef1f302a15e5c8541bb666bb97645b01c125cf","sha256:e97ec196a2c46cecedf55ab0427508eb319f026390931c2ac2a8442b48d16b5b"],"state_sha256":"29b3d49371d7043601aa8cbf168ccbb954d791a2ed0b269f056c4bbe8e15b16e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Y95atHd677+XypRUTNO2vHTzNoIN0UwslhmjI+8qj21bdJYmAGin+DDRcw9ntBUrxkXUyyM1ZA6ii8mvi6TIBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-18T22:50:19.877064Z","bundle_sha256":"b86417f77ff70fa752a2c922323f73431619a8b51139a45b7abb3d8393ec2ace"}}