{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:MBMCJ2ZIT6T2KOCICEBW7I4TRC","short_pith_number":"pith:MBMCJ2ZI","canonical_record":{"source":{"id":"2206.09926","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2022-06-20T18:00:01Z","cross_cats_sorted":[],"title_canon_sha256":"9b53c1fe10afda1c905cadbf94d12493ca9d1c88eac152ecfad4c6f22c96af16","abstract_canon_sha256":"1733eab69e9964b0f94005e2a38b972bb1a831994ba3d3d3a03b30480c1a7beb"},"schema_version":"1.0"},"canonical_sha256":"605824eb289fa7a5384811036fa39388948bcff8fe9fb6f9c716f8f77fa24301","source":{"kind":"arxiv","id":"2206.09926","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2206.09926","created_at":"2026-07-05T05:03:02Z"},{"alias_kind":"arxiv_version","alias_value":"2206.09926v1","created_at":"2026-07-05T05:03:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2206.09926","created_at":"2026-07-05T05:03:02Z"},{"alias_kind":"pith_short_12","alias_value":"MBMCJ2ZIT6T2","created_at":"2026-07-05T05:03:02Z"},{"alias_kind":"pith_short_16","alias_value":"MBMCJ2ZIT6T2KOCI","created_at":"2026-07-05T05:03:02Z"},{"alias_kind":"pith_short_8","alias_value":"MBMCJ2ZI","created_at":"2026-07-05T05:03:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:MBMCJ2ZIT6T2KOCICEBW7I4TRC","target":"record","payload":{"canonical_record":{"source":{"id":"2206.09926","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2022-06-20T18:00:01Z","cross_cats_sorted":[],"title_canon_sha256":"9b53c1fe10afda1c905cadbf94d12493ca9d1c88eac152ecfad4c6f22c96af16","abstract_canon_sha256":"1733eab69e9964b0f94005e2a38b972bb1a831994ba3d3d3a03b30480c1a7beb"},"schema_version":"1.0"},"canonical_sha256":"605824eb289fa7a5384811036fa39388948bcff8fe9fb6f9c716f8f77fa24301","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:03:02.406435Z","signature_b64":"cYsnsqQYfUyTrBH026OCKXOANT4bMMbNEpbwfU9yOaXIfukGE5bk3D+hTbPklBXXHkmxuhXVtHV531jU782sBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"605824eb289fa7a5384811036fa39388948bcff8fe9fb6f9c716f8f77fa24301","last_reissued_at":"2026-07-05T05:03:02.406002Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:03:02.406002Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2206.09926","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":"2026-07-05T05:03:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"l80NOCnM5zVJ1sd8U6fpjzIiVYG4SmFP+uY0w6gp2mijO6kM0lLOA4e7h8Q8e3mOoTAEp5YyyIQJhhc9VLZDBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-16T05:59:36.083974Z"},"content_sha256":"364dae2832292d5de7d0066c58e280004a712c6fba81edfc37937b284bf3ffec","schema_version":"1.0","event_id":"sha256:364dae2832292d5de7d0066c58e280004a712c6fba81edfc37937b284bf3ffec"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:MBMCJ2ZIT6T2KOCICEBW7I4TRC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Non-Detection of Red Supergiant Convection in Gaia","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"C. S. Kochanek (1) ((1) Department of Astronomy, The Ohio State University)","submitted_at":"2022-06-20T18:00:01Z","abstract_excerpt":"Large scale surface convection on red supergiants (RSGs) can lead to shifts in the photocenter of the star which might be measured by Gaia and used as a new probe of the surface dynamics of these rare but important stars. Unlike brightness variations, photocenter motions would provide information on the physical scale of the convective cells. The signal would be that RSGs show an excess astrometric noise at the level of a few percent of the stellar radius. Unfortunately, we find that the excess astrometric noise level of Gaia EDR3 is roughly an order of magnitude too large to detect the predic"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2206.09926","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/2206.09926/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":"2026-07-05T05:03:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1mms2d9PEQXxEd7+pDcYdjtE9a01A7/WTTZptjYSfN9f5zmWJuxEnk9CdnENd2mEPpk1Kcc6DbgkdC18LB+yCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-16T05:59:36.084359Z"},"content_sha256":"a664e960ad679db98d6a3b1d7a57ddd57357801391a59272dc99301994daec14","schema_version":"1.0","event_id":"sha256:a664e960ad679db98d6a3b1d7a57ddd57357801391a59272dc99301994daec14"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MBMCJ2ZIT6T2KOCICEBW7I4TRC/bundle.json","state_url":"https://pith.science/pith/MBMCJ2ZIT6T2KOCICEBW7I4TRC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MBMCJ2ZIT6T2KOCICEBW7I4TRC/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":"2026-07-16T05:59:36Z","links":{"resolver":"https://pith.science/pith/MBMCJ2ZIT6T2KOCICEBW7I4TRC","bundle":"https://pith.science/pith/MBMCJ2ZIT6T2KOCICEBW7I4TRC/bundle.json","state":"https://pith.science/pith/MBMCJ2ZIT6T2KOCICEBW7I4TRC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MBMCJ2ZIT6T2KOCICEBW7I4TRC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:MBMCJ2ZIT6T2KOCICEBW7I4TRC","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":"1733eab69e9964b0f94005e2a38b972bb1a831994ba3d3d3a03b30480c1a7beb","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2022-06-20T18:00:01Z","title_canon_sha256":"9b53c1fe10afda1c905cadbf94d12493ca9d1c88eac152ecfad4c6f22c96af16"},"schema_version":"1.0","source":{"id":"2206.09926","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2206.09926","created_at":"2026-07-05T05:03:02Z"},{"alias_kind":"arxiv_version","alias_value":"2206.09926v1","created_at":"2026-07-05T05:03:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2206.09926","created_at":"2026-07-05T05:03:02Z"},{"alias_kind":"pith_short_12","alias_value":"MBMCJ2ZIT6T2","created_at":"2026-07-05T05:03:02Z"},{"alias_kind":"pith_short_16","alias_value":"MBMCJ2ZIT6T2KOCI","created_at":"2026-07-05T05:03:02Z"},{"alias_kind":"pith_short_8","alias_value":"MBMCJ2ZI","created_at":"2026-07-05T05:03:02Z"}],"graph_snapshots":[{"event_id":"sha256:a664e960ad679db98d6a3b1d7a57ddd57357801391a59272dc99301994daec14","target":"graph","created_at":"2026-07-05T05:03:02Z","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/2206.09926/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Large scale surface convection on red supergiants (RSGs) can lead to shifts in the photocenter of the star which might be measured by Gaia and used as a new probe of the surface dynamics of these rare but important stars. Unlike brightness variations, photocenter motions would provide information on the physical scale of the convective cells. The signal would be that RSGs show an excess astrometric noise at the level of a few percent of the stellar radius. Unfortunately, we find that the excess astrometric noise level of Gaia EDR3 is roughly an order of magnitude too large to detect the predic","authors_text":"C. S. Kochanek (1) ((1) Department of Astronomy, The Ohio State University)","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2022-06-20T18:00:01Z","title":"A Non-Detection of Red Supergiant Convection in Gaia"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2206.09926","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":"sha256:364dae2832292d5de7d0066c58e280004a712c6fba81edfc37937b284bf3ffec","target":"record","created_at":"2026-07-05T05:03:02Z","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":"1733eab69e9964b0f94005e2a38b972bb1a831994ba3d3d3a03b30480c1a7beb","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2022-06-20T18:00:01Z","title_canon_sha256":"9b53c1fe10afda1c905cadbf94d12493ca9d1c88eac152ecfad4c6f22c96af16"},"schema_version":"1.0","source":{"id":"2206.09926","kind":"arxiv","version":1}},"canonical_sha256":"605824eb289fa7a5384811036fa39388948bcff8fe9fb6f9c716f8f77fa24301","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"605824eb289fa7a5384811036fa39388948bcff8fe9fb6f9c716f8f77fa24301","first_computed_at":"2026-07-05T05:03:02.406002Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:03:02.406002Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"cYsnsqQYfUyTrBH026OCKXOANT4bMMbNEpbwfU9yOaXIfukGE5bk3D+hTbPklBXXHkmxuhXVtHV531jU782sBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T05:03:02.406435Z","signed_message":"canonical_sha256_bytes"},"source_id":"2206.09926","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:364dae2832292d5de7d0066c58e280004a712c6fba81edfc37937b284bf3ffec","sha256:a664e960ad679db98d6a3b1d7a57ddd57357801391a59272dc99301994daec14"],"state_sha256":"b896ac334868373dbf2cd0bd179cd73f952e770a180d56ce593bcd83988b9b4e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CEUM1E9etU/w5IdZ8cwnKZjBdAZf/NcuP2JW2qJ3pkZrJa5llVoLPe2hpwio7nkKCnJRuAUxxw684IndowiRAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-16T05:59:36.086966Z","bundle_sha256":"6cc84aaa6489267c72c119442ca2e72cc39050e2488e92a015968e051831e3f1"}}