{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:6DLQGO7IF6T2IDZK7HSPPSZMN7","short_pith_number":"pith:6DLQGO7I","canonical_record":{"source":{"id":"1609.04674","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-09-15T14:36:12Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"737e1f3cba524f3cfc229e00a73227a2209f40d1380817c5e88de142972ae598","abstract_canon_sha256":"ef826bbd4b4e31cc0e4d1810e5bbd5e3bfbd9d4c1d197d0dbfc71a6b39631325"},"schema_version":"1.0"},"canonical_sha256":"f0d7033be82fa7a40f2af9e4f7cb2c6fd54cb158b109d0f9faa38a596d6da82e","source":{"kind":"arxiv","id":"1609.04674","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1609.04674","created_at":"2026-05-18T00:55:11Z"},{"alias_kind":"arxiv_version","alias_value":"1609.04674v1","created_at":"2026-05-18T00:55:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1609.04674","created_at":"2026-05-18T00:55:11Z"},{"alias_kind":"pith_short_12","alias_value":"6DLQGO7IF6T2","created_at":"2026-05-18T12:30:01Z"},{"alias_kind":"pith_short_16","alias_value":"6DLQGO7IF6T2IDZK","created_at":"2026-05-18T12:30:01Z"},{"alias_kind":"pith_short_8","alias_value":"6DLQGO7I","created_at":"2026-05-18T12:30:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:6DLQGO7IF6T2IDZK7HSPPSZMN7","target":"record","payload":{"canonical_record":{"source":{"id":"1609.04674","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-09-15T14:36:12Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"737e1f3cba524f3cfc229e00a73227a2209f40d1380817c5e88de142972ae598","abstract_canon_sha256":"ef826bbd4b4e31cc0e4d1810e5bbd5e3bfbd9d4c1d197d0dbfc71a6b39631325"},"schema_version":"1.0"},"canonical_sha256":"f0d7033be82fa7a40f2af9e4f7cb2c6fd54cb158b109d0f9faa38a596d6da82e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:55:11.913433Z","signature_b64":"nJ9I+pf9nMRH9Pzroh3Z4Wr9wU2484v7qsLapYL58XBj4+yhjcI5jfLLxZdcMlMogLxVGqEjjUf7C/t15A9zAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f0d7033be82fa7a40f2af9e4f7cb2c6fd54cb158b109d0f9faa38a596d6da82e","last_reissued_at":"2026-05-18T00:55:11.912961Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:55:11.912961Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1609.04674","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":"2026-05-18T00:55:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9aUxo/B0GflROHVWZv1+jrMHuBe/JF5N8mosdliUjMbVRIx6qt37yQHwpWUz7T3M2V/4RXcbYLIbJ7XQfxDWAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-20T12:24:03.508224Z"},"content_sha256":"445c9657b6e6f1c43c9497cfd8b838e892d9ff7db0063289b78e92ad590ad71c","schema_version":"1.0","event_id":"sha256:445c9657b6e6f1c43c9497cfd8b838e892d9ff7db0063289b78e92ad590ad71c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:6DLQGO7IF6T2IDZK7HSPPSZMN7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Very Bright, Very Hot, and Very Long Flaring Event from the M Dwarf Binary System DG CVn","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.SR","authors_text":"Adam Kowalski (U. Md/GSFC, Center for Astrophysical Sciences, Czech Republic), Department of Astrophysical, Enrique de Miguel (Universidad de Huelva, Hans Krimm (USRA/CRESST), Jamie Kennea (Penn State), Johns Hopkins University), Kim Page (University of Leicester), Kosmas Gazeas (University of Athens), Mathew Page (UCL), NASA/GSFC), National Solar Observatory, Neil Gehrels (NASA/GSFC), Planetary Sciences, Rachel A. Osten (Space Telescope Science Institute, Rudolf Nov\\'ak (Masaryk University, Samantha Oates (Instituto de Astrofsica de Andaluc \\'ia (IAA-CSIC)), Spain), Stephen A. Drake (USRA/CRESST, Tomas Apeltauer (Brno University of Technology, University of Colorado Boulder, University of Colorado Boulder)","submitted_at":"2016-09-15T14:36:12Z","abstract_excerpt":"On April 23, 2014, the Swift satellite responded to a hard X-ray transient detected by its Burst Alert Telescope, which turned out to be a stellar flare from a nearby, young M dwarf binary DG~CVn. We utilize observations at X-ray, UV, optical, and radio wavelengths to infer the properties of two large flares. The X-ray spectrum of the primary outburst can be described over the 0.3-100 keV bandpass by either a single very high temperature plasma or a nonthermal thick-target bremsstrahlung model, and we rule out the nonthermal model based on energetic grounds. The temperatures were the highest s"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1609.04674","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":"2026-05-18T00:55:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JlNE1evQ3mJT0+0Cyd1OjNzxxmNJp+6nrus3G6LkZEOhx59WS6vUhcfHCTQmEzRL7cRHify0WazUzAYLFT71DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-20T12:24:03.508593Z"},"content_sha256":"ad49d709727beef26357fda3980da07da5c18050eb08e0d70168a76d7702626f","schema_version":"1.0","event_id":"sha256:ad49d709727beef26357fda3980da07da5c18050eb08e0d70168a76d7702626f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6DLQGO7IF6T2IDZK7HSPPSZMN7/bundle.json","state_url":"https://pith.science/pith/6DLQGO7IF6T2IDZK7HSPPSZMN7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6DLQGO7IF6T2IDZK7HSPPSZMN7/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":"2026-05-20T12:24:03Z","links":{"resolver":"https://pith.science/pith/6DLQGO7IF6T2IDZK7HSPPSZMN7","bundle":"https://pith.science/pith/6DLQGO7IF6T2IDZK7HSPPSZMN7/bundle.json","state":"https://pith.science/pith/6DLQGO7IF6T2IDZK7HSPPSZMN7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6DLQGO7IF6T2IDZK7HSPPSZMN7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:6DLQGO7IF6T2IDZK7HSPPSZMN7","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":"ef826bbd4b4e31cc0e4d1810e5bbd5e3bfbd9d4c1d197d0dbfc71a6b39631325","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-09-15T14:36:12Z","title_canon_sha256":"737e1f3cba524f3cfc229e00a73227a2209f40d1380817c5e88de142972ae598"},"schema_version":"1.0","source":{"id":"1609.04674","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1609.04674","created_at":"2026-05-18T00:55:11Z"},{"alias_kind":"arxiv_version","alias_value":"1609.04674v1","created_at":"2026-05-18T00:55:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1609.04674","created_at":"2026-05-18T00:55:11Z"},{"alias_kind":"pith_short_12","alias_value":"6DLQGO7IF6T2","created_at":"2026-05-18T12:30:01Z"},{"alias_kind":"pith_short_16","alias_value":"6DLQGO7IF6T2IDZK","created_at":"2026-05-18T12:30:01Z"},{"alias_kind":"pith_short_8","alias_value":"6DLQGO7I","created_at":"2026-05-18T12:30:01Z"}],"graph_snapshots":[{"event_id":"sha256:ad49d709727beef26357fda3980da07da5c18050eb08e0d70168a76d7702626f","target":"graph","created_at":"2026-05-18T00:55:11Z","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":"On April 23, 2014, the Swift satellite responded to a hard X-ray transient detected by its Burst Alert Telescope, which turned out to be a stellar flare from a nearby, young M dwarf binary DG~CVn. We utilize observations at X-ray, UV, optical, and radio wavelengths to infer the properties of two large flares. The X-ray spectrum of the primary outburst can be described over the 0.3-100 keV bandpass by either a single very high temperature plasma or a nonthermal thick-target bremsstrahlung model, and we rule out the nonthermal model based on energetic grounds. The temperatures were the highest s","authors_text":"Adam Kowalski (U. Md/GSFC, Center for Astrophysical Sciences, Czech Republic), Department of Astrophysical, Enrique de Miguel (Universidad de Huelva, Hans Krimm (USRA/CRESST), Jamie Kennea (Penn State), Johns Hopkins University), Kim Page (University of Leicester), Kosmas Gazeas (University of Athens), Mathew Page (UCL), NASA/GSFC), National Solar Observatory, Neil Gehrels (NASA/GSFC), Planetary Sciences, Rachel A. Osten (Space Telescope Science Institute, Rudolf Nov\\'ak (Masaryk University, Samantha Oates (Instituto de Astrofsica de Andaluc \\'ia (IAA-CSIC)), Spain), Stephen A. Drake (USRA/CRESST, Tomas Apeltauer (Brno University of Technology, University of Colorado Boulder, University of Colorado Boulder)","cross_cats":["astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-09-15T14:36:12Z","title":"A Very Bright, Very Hot, and Very Long Flaring Event from the M Dwarf Binary System DG CVn"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1609.04674","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":"sha256:445c9657b6e6f1c43c9497cfd8b838e892d9ff7db0063289b78e92ad590ad71c","target":"record","created_at":"2026-05-18T00:55:11Z","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":"ef826bbd4b4e31cc0e4d1810e5bbd5e3bfbd9d4c1d197d0dbfc71a6b39631325","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-09-15T14:36:12Z","title_canon_sha256":"737e1f3cba524f3cfc229e00a73227a2209f40d1380817c5e88de142972ae598"},"schema_version":"1.0","source":{"id":"1609.04674","kind":"arxiv","version":1}},"canonical_sha256":"f0d7033be82fa7a40f2af9e4f7cb2c6fd54cb158b109d0f9faa38a596d6da82e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f0d7033be82fa7a40f2af9e4f7cb2c6fd54cb158b109d0f9faa38a596d6da82e","first_computed_at":"2026-05-18T00:55:11.912961Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:55:11.912961Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"nJ9I+pf9nMRH9Pzroh3Z4Wr9wU2484v7qsLapYL58XBj4+yhjcI5jfLLxZdcMlMogLxVGqEjjUf7C/t15A9zAw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:55:11.913433Z","signed_message":"canonical_sha256_bytes"},"source_id":"1609.04674","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:445c9657b6e6f1c43c9497cfd8b838e892d9ff7db0063289b78e92ad590ad71c","sha256:ad49d709727beef26357fda3980da07da5c18050eb08e0d70168a76d7702626f"],"state_sha256":"a8a62545c95e0717ed5204f94295864bc3de6d15d0a4656be6e5f4aafbab5427"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ye5BxSgHE0Zug/YR8eCkC8KqBzfCkvxDbk8SMEhRoHj0iG220wZaGueiV5/eKU940w7MDgGL1LHJEYDCXUA9CA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-20T12:24:03.510810Z","bundle_sha256":"61d31e0fbf35c5da66df20a73f9f958e5fa5e2389314512c2d40f8b588c529c5"}}