{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:ML6R4V7NMBVY6TCGZH5P5VLPQG","short_pith_number":"pith:ML6R4V7N","canonical_record":{"source":{"id":"1705.05617","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-05-16T09:48:40Z","cross_cats_sorted":[],"title_canon_sha256":"29614c59c6fe66477dc3a4a5f62fe24f4a6226a6d0413f4ddb58c8b6a8b81d94","abstract_canon_sha256":"c708ce6c4a49e977c407236b974e36f345e450f13c670a0032eb0e267f696494"},"schema_version":"1.0"},"canonical_sha256":"62fd1e57ed606b8f4c46c9fafed56f818c0112cf0fa5027cf2f6e9f4890cab64","source":{"kind":"arxiv","id":"1705.05617","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1705.05617","created_at":"2026-05-18T00:35:58Z"},{"alias_kind":"arxiv_version","alias_value":"1705.05617v1","created_at":"2026-05-18T00:35:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1705.05617","created_at":"2026-05-18T00:35:58Z"},{"alias_kind":"pith_short_12","alias_value":"ML6R4V7NMBVY","created_at":"2026-05-18T12:31:31Z"},{"alias_kind":"pith_short_16","alias_value":"ML6R4V7NMBVY6TCG","created_at":"2026-05-18T12:31:31Z"},{"alias_kind":"pith_short_8","alias_value":"ML6R4V7N","created_at":"2026-05-18T12:31:31Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:ML6R4V7NMBVY6TCGZH5P5VLPQG","target":"record","payload":{"canonical_record":{"source":{"id":"1705.05617","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-05-16T09:48:40Z","cross_cats_sorted":[],"title_canon_sha256":"29614c59c6fe66477dc3a4a5f62fe24f4a6226a6d0413f4ddb58c8b6a8b81d94","abstract_canon_sha256":"c708ce6c4a49e977c407236b974e36f345e450f13c670a0032eb0e267f696494"},"schema_version":"1.0"},"canonical_sha256":"62fd1e57ed606b8f4c46c9fafed56f818c0112cf0fa5027cf2f6e9f4890cab64","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:35:58.845395Z","signature_b64":"nydl3TFzfcOB05uy4xdh6oje2FVZQt0RkF3EdqcatGv9WOYVXflPLopU5gFLKoPBAzSN94qX75nAVALYs4/uAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"62fd1e57ed606b8f4c46c9fafed56f818c0112cf0fa5027cf2f6e9f4890cab64","last_reissued_at":"2026-05-18T00:35:58.844923Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:35:58.844923Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1705.05617","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":"2026-05-18T00:35:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PdHK1NCfgNbkjZPNFyIwLDFINfmEevZGkWvwpdIjplx+vm/w4E0S6rrJRJWXeLbUZ4EyD8Z95H5zpD6syNnXDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T22:26:36.707200Z"},"content_sha256":"72956045afa73d3aa60422e4a5eee92855277a65df3e549bea409156b45dd4c2","schema_version":"1.0","event_id":"sha256:72956045afa73d3aa60422e4a5eee92855277a65df3e549bea409156b45dd4c2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:ML6R4V7NMBVY6TCGZH5P5VLPQG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The formation of small-scale umbral brightenings in sunspot atmospheres","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"C. J. Nelson, F. P. Keenan, M. Mathioudakis, V. M. J. Henriques","submitted_at":"2017-05-16T09:48:40Z","abstract_excerpt":"Sunspot atmospheres are highly inhomogeneous hosting both quasi-stable and transient features, such as `umbral micro-jets' and dark fibril-like events. We seek to understand the morphological properties and formation mechanisms of small-scale umbral brightenings (SSUBs; analogous to umbral micro-jets) and to understand whether links between these events and short dynamic fibrils, umbral flashes, and umbral dots can be established. An SST filtergram time-series sampling the Ca II H line and a CRISP full-Stokes 15-point Ca II 8542 A line scan dataset were used. The average lifetime and lengths o"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1705.05617","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":"2026-05-18T00:35:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nqQ1jFN3FYtAAd7F6u/ZWl2xBDLXEjLBSCx3LRtqFdMfN7gecMdZFqXYWpUK2kmaeaHBcsw9Why6yticQLXIDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T22:26:36.708131Z"},"content_sha256":"159660fcdbaa0fad00a841a6e19df3b0371cc1c0200755be203a33dbe33ac004","schema_version":"1.0","event_id":"sha256:159660fcdbaa0fad00a841a6e19df3b0371cc1c0200755be203a33dbe33ac004"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ML6R4V7NMBVY6TCGZH5P5VLPQG/bundle.json","state_url":"https://pith.science/pith/ML6R4V7NMBVY6TCGZH5P5VLPQG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ML6R4V7NMBVY6TCGZH5P5VLPQG/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":"2026-05-29T22:26:36Z","links":{"resolver":"https://pith.science/pith/ML6R4V7NMBVY6TCGZH5P5VLPQG","bundle":"https://pith.science/pith/ML6R4V7NMBVY6TCGZH5P5VLPQG/bundle.json","state":"https://pith.science/pith/ML6R4V7NMBVY6TCGZH5P5VLPQG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ML6R4V7NMBVY6TCGZH5P5VLPQG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:ML6R4V7NMBVY6TCGZH5P5VLPQG","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":"c708ce6c4a49e977c407236b974e36f345e450f13c670a0032eb0e267f696494","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-05-16T09:48:40Z","title_canon_sha256":"29614c59c6fe66477dc3a4a5f62fe24f4a6226a6d0413f4ddb58c8b6a8b81d94"},"schema_version":"1.0","source":{"id":"1705.05617","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1705.05617","created_at":"2026-05-18T00:35:58Z"},{"alias_kind":"arxiv_version","alias_value":"1705.05617v1","created_at":"2026-05-18T00:35:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1705.05617","created_at":"2026-05-18T00:35:58Z"},{"alias_kind":"pith_short_12","alias_value":"ML6R4V7NMBVY","created_at":"2026-05-18T12:31:31Z"},{"alias_kind":"pith_short_16","alias_value":"ML6R4V7NMBVY6TCG","created_at":"2026-05-18T12:31:31Z"},{"alias_kind":"pith_short_8","alias_value":"ML6R4V7N","created_at":"2026-05-18T12:31:31Z"}],"graph_snapshots":[{"event_id":"sha256:159660fcdbaa0fad00a841a6e19df3b0371cc1c0200755be203a33dbe33ac004","target":"graph","created_at":"2026-05-18T00:35:58Z","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":"Sunspot atmospheres are highly inhomogeneous hosting both quasi-stable and transient features, such as `umbral micro-jets' and dark fibril-like events. We seek to understand the morphological properties and formation mechanisms of small-scale umbral brightenings (SSUBs; analogous to umbral micro-jets) and to understand whether links between these events and short dynamic fibrils, umbral flashes, and umbral dots can be established. An SST filtergram time-series sampling the Ca II H line and a CRISP full-Stokes 15-point Ca II 8542 A line scan dataset were used. The average lifetime and lengths o","authors_text":"C. J. Nelson, F. P. Keenan, M. Mathioudakis, V. M. J. Henriques","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-05-16T09:48:40Z","title":"The formation of small-scale umbral brightenings in sunspot atmospheres"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1705.05617","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":"sha256:72956045afa73d3aa60422e4a5eee92855277a65df3e549bea409156b45dd4c2","target":"record","created_at":"2026-05-18T00:35:58Z","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":"c708ce6c4a49e977c407236b974e36f345e450f13c670a0032eb0e267f696494","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-05-16T09:48:40Z","title_canon_sha256":"29614c59c6fe66477dc3a4a5f62fe24f4a6226a6d0413f4ddb58c8b6a8b81d94"},"schema_version":"1.0","source":{"id":"1705.05617","kind":"arxiv","version":1}},"canonical_sha256":"62fd1e57ed606b8f4c46c9fafed56f818c0112cf0fa5027cf2f6e9f4890cab64","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"62fd1e57ed606b8f4c46c9fafed56f818c0112cf0fa5027cf2f6e9f4890cab64","first_computed_at":"2026-05-18T00:35:58.844923Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:35:58.844923Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"nydl3TFzfcOB05uy4xdh6oje2FVZQt0RkF3EdqcatGv9WOYVXflPLopU5gFLKoPBAzSN94qX75nAVALYs4/uAw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:35:58.845395Z","signed_message":"canonical_sha256_bytes"},"source_id":"1705.05617","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:72956045afa73d3aa60422e4a5eee92855277a65df3e549bea409156b45dd4c2","sha256:159660fcdbaa0fad00a841a6e19df3b0371cc1c0200755be203a33dbe33ac004"],"state_sha256":"0158c8a3d4c1586d34b94462bac994dbe6ccf10b8e503fcb64fdbeb7a56cec65"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KiroUiVJ+5m5BGSUBSgGHM1YGxgJXUu3n30XS2r9QLOD0njK4C6AmraFzOI9eDmMLJfRXP52KYBkVWb7yVnGAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-29T22:26:36.713396Z","bundle_sha256":"7564c0ce36d4d61c9cf61e254aca1f9660ff0993535d7d1a11f88ea7dbc4f76c"}}