{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:NGNIHFYPCI7DBZKJQVDPAQEM2F","short_pith_number":"pith:NGNIHFYP","canonical_record":{"source":{"id":"2606.10981","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2026-06-09T15:16:54Z","cross_cats_sorted":[],"title_canon_sha256":"1b569886f5ef4a2951c01f6032354d2dec20e6d8add8f5071c5014a6c17155b8","abstract_canon_sha256":"28799a142b890f5b5177d8aa6fe9c4ffe001b8656552b22d28a534340ada384a"},"schema_version":"1.0"},"canonical_sha256":"699a83970f123e30e5498546f0408cd157677fd6bf7f2c26038ee18b138cab11","source":{"kind":"arxiv","id":"2606.10981","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.10981","created_at":"2026-06-10T01:10:51Z"},{"alias_kind":"arxiv_version","alias_value":"2606.10981v1","created_at":"2026-06-10T01:10:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.10981","created_at":"2026-06-10T01:10:51Z"},{"alias_kind":"pith_short_12","alias_value":"NGNIHFYPCI7D","created_at":"2026-06-10T01:10:51Z"},{"alias_kind":"pith_short_16","alias_value":"NGNIHFYPCI7DBZKJ","created_at":"2026-06-10T01:10:51Z"},{"alias_kind":"pith_short_8","alias_value":"NGNIHFYP","created_at":"2026-06-10T01:10:51Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:NGNIHFYPCI7DBZKJQVDPAQEM2F","target":"record","payload":{"canonical_record":{"source":{"id":"2606.10981","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2026-06-09T15:16:54Z","cross_cats_sorted":[],"title_canon_sha256":"1b569886f5ef4a2951c01f6032354d2dec20e6d8add8f5071c5014a6c17155b8","abstract_canon_sha256":"28799a142b890f5b5177d8aa6fe9c4ffe001b8656552b22d28a534340ada384a"},"schema_version":"1.0"},"canonical_sha256":"699a83970f123e30e5498546f0408cd157677fd6bf7f2c26038ee18b138cab11","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-10T01:10:51.184048Z","signature_b64":"xPc/nI/jNPlcu+NGaKp4WwoeqDm8eSau0HJCnN73L/hN1IYRHWBOhMonfltQ7c84M1phfU6m83EOjeIuYUwKDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"699a83970f123e30e5498546f0408cd157677fd6bf7f2c26038ee18b138cab11","last_reissued_at":"2026-06-10T01:10:51.183204Z","signature_status":"signed_v1","first_computed_at":"2026-06-10T01:10:51.183204Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2606.10981","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":"2026-06-10T01:10:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"83GMnTH/JFiG4YuNa9j1E3R/8l29+0sMPLk77JOVQ6fj54fVaxIBRH6Hvj79Rg6lN+y3NzsNd/YW8SnAGrE0BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-02T06:03:31.903581Z"},"content_sha256":"302da458d6cb067503d333e5670bec1c2dbc02566f353bba153030b6d355e6da","schema_version":"1.0","event_id":"sha256:302da458d6cb067503d333e5670bec1c2dbc02566f353bba153030b6d355e6da"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:NGNIHFYPCI7DBZKJQVDPAQEM2F","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Dimming and pulsation shock of the coalesced star V838 Monocerotis","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"A. A. Djupvik (NOT, Aarhus University), C. E. Woodward (Minnesota Institute of Astrophysics), I. Ilyin (Leibniz-Institute for Astrophysics Potsdam), M. R. Schmidt (CAMK Toru\\'n), T. Kami\\'nski (CAMK Toru\\'n), T. Liimets (Tartu Observatory)","submitted_at":"2026-06-09T15:16:54Z","abstract_excerpt":"V838 Mon is the remnant of a stellar merger that occurred in 2002. Twenty-four years after the merger, the remnant closely resembles a red supergiant, but its luminosity is sustained by core H burning and continued contraction toward hydrostatic equilibrium. In late 2025, the system entered the deepest dimming event observed since 2006. We characterize the 2026 dimming using multiband photometry and high-resolution spectroscopy spanning from the dimming minimum through the recovery phase. The photometric color evolution during the dimming can be well reproduced by dust extinction with $A_V=1.2"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.10981","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/2606.10981/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":"2026-06-10T01:10:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QvejJwe5RCNP4UbQPoWCSDvwhvxG47ouqNmrAVIRH1q9dnL1O/twIY0pr72iyRjkguJdeuCG896SB0EgnzeIBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-02T06:03:31.903952Z"},"content_sha256":"8d301eedb140fa45f8d83de2fd596dcd145bccdc48921ef9a019f4404c19e835","schema_version":"1.0","event_id":"sha256:8d301eedb140fa45f8d83de2fd596dcd145bccdc48921ef9a019f4404c19e835"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NGNIHFYPCI7DBZKJQVDPAQEM2F/bundle.json","state_url":"https://pith.science/pith/NGNIHFYPCI7DBZKJQVDPAQEM2F/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NGNIHFYPCI7DBZKJQVDPAQEM2F/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":"2026-07-02T06:03:31Z","links":{"resolver":"https://pith.science/pith/NGNIHFYPCI7DBZKJQVDPAQEM2F","bundle":"https://pith.science/pith/NGNIHFYPCI7DBZKJQVDPAQEM2F/bundle.json","state":"https://pith.science/pith/NGNIHFYPCI7DBZKJQVDPAQEM2F/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NGNIHFYPCI7DBZKJQVDPAQEM2F/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:NGNIHFYPCI7DBZKJQVDPAQEM2F","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":"28799a142b890f5b5177d8aa6fe9c4ffe001b8656552b22d28a534340ada384a","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2026-06-09T15:16:54Z","title_canon_sha256":"1b569886f5ef4a2951c01f6032354d2dec20e6d8add8f5071c5014a6c17155b8"},"schema_version":"1.0","source":{"id":"2606.10981","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.10981","created_at":"2026-06-10T01:10:51Z"},{"alias_kind":"arxiv_version","alias_value":"2606.10981v1","created_at":"2026-06-10T01:10:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.10981","created_at":"2026-06-10T01:10:51Z"},{"alias_kind":"pith_short_12","alias_value":"NGNIHFYPCI7D","created_at":"2026-06-10T01:10:51Z"},{"alias_kind":"pith_short_16","alias_value":"NGNIHFYPCI7DBZKJ","created_at":"2026-06-10T01:10:51Z"},{"alias_kind":"pith_short_8","alias_value":"NGNIHFYP","created_at":"2026-06-10T01:10:51Z"}],"graph_snapshots":[{"event_id":"sha256:8d301eedb140fa45f8d83de2fd596dcd145bccdc48921ef9a019f4404c19e835","target":"graph","created_at":"2026-06-10T01:10:51Z","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/2606.10981/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"V838 Mon is the remnant of a stellar merger that occurred in 2002. Twenty-four years after the merger, the remnant closely resembles a red supergiant, but its luminosity is sustained by core H burning and continued contraction toward hydrostatic equilibrium. In late 2025, the system entered the deepest dimming event observed since 2006. We characterize the 2026 dimming using multiband photometry and high-resolution spectroscopy spanning from the dimming minimum through the recovery phase. The photometric color evolution during the dimming can be well reproduced by dust extinction with $A_V=1.2","authors_text":"A. A. Djupvik (NOT, Aarhus University), C. E. Woodward (Minnesota Institute of Astrophysics), I. Ilyin (Leibniz-Institute for Astrophysics Potsdam), M. R. Schmidt (CAMK Toru\\'n), T. Kami\\'nski (CAMK Toru\\'n), T. Liimets (Tartu Observatory)","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2026-06-09T15:16:54Z","title":"Dimming and pulsation shock of the coalesced star V838 Monocerotis"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.10981","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":"sha256:302da458d6cb067503d333e5670bec1c2dbc02566f353bba153030b6d355e6da","target":"record","created_at":"2026-06-10T01:10:51Z","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":"28799a142b890f5b5177d8aa6fe9c4ffe001b8656552b22d28a534340ada384a","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2026-06-09T15:16:54Z","title_canon_sha256":"1b569886f5ef4a2951c01f6032354d2dec20e6d8add8f5071c5014a6c17155b8"},"schema_version":"1.0","source":{"id":"2606.10981","kind":"arxiv","version":1}},"canonical_sha256":"699a83970f123e30e5498546f0408cd157677fd6bf7f2c26038ee18b138cab11","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"699a83970f123e30e5498546f0408cd157677fd6bf7f2c26038ee18b138cab11","first_computed_at":"2026-06-10T01:10:51.183204Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-10T01:10:51.183204Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"xPc/nI/jNPlcu+NGaKp4WwoeqDm8eSau0HJCnN73L/hN1IYRHWBOhMonfltQ7c84M1phfU6m83EOjeIuYUwKDg==","signature_status":"signed_v1","signed_at":"2026-06-10T01:10:51.184048Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.10981","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:302da458d6cb067503d333e5670bec1c2dbc02566f353bba153030b6d355e6da","sha256:8d301eedb140fa45f8d83de2fd596dcd145bccdc48921ef9a019f4404c19e835"],"state_sha256":"eda2d01c1246ca6a8b571769946bdd35d6780c01f391cfd6c5dc907fcad58977"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Vkw+oJbPyRCirZjRkuRbuR25xGBb+e7gwiycSFhWj/chchDEn29E7SI0aqnEK/qQbHCTlEBbGuSbM6EPbBuyCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-02T06:03:31.906000Z","bundle_sha256":"4caaf6e95a33b6e1df323f5c4681dac85c95a210f3d47993f21d90ad2a3345d9"}}