{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:OEFZFMGWGNXWOAYV2GZ3BSY7GP","short_pith_number":"pith:OEFZFMGW","canonical_record":{"source":{"id":"1401.0110","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-12-31T08:02:33Z","cross_cats_sorted":["physics.flu-dyn"],"title_canon_sha256":"f45e1f4614c0d9acaf98bee97b49b56b2a21c480abca70305dab6e2554343af4","abstract_canon_sha256":"026136bb5d5597a4ccecf988633bf427b84eb61683f8d338229a3d3100643b76"},"schema_version":"1.0"},"canonical_sha256":"710b92b0d6336f670315d1b3b0cb1f33cb2ff1c22d44d34378b2723d32e47a28","source":{"kind":"arxiv","id":"1401.0110","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1401.0110","created_at":"2026-05-18T01:45:34Z"},{"alias_kind":"arxiv_version","alias_value":"1401.0110v1","created_at":"2026-05-18T01:45:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1401.0110","created_at":"2026-05-18T01:45:34Z"},{"alias_kind":"pith_short_12","alias_value":"OEFZFMGWGNXW","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_16","alias_value":"OEFZFMGWGNXWOAYV","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_8","alias_value":"OEFZFMGW","created_at":"2026-05-18T12:27:54Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:OEFZFMGWGNXWOAYV2GZ3BSY7GP","target":"record","payload":{"canonical_record":{"source":{"id":"1401.0110","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-12-31T08:02:33Z","cross_cats_sorted":["physics.flu-dyn"],"title_canon_sha256":"f45e1f4614c0d9acaf98bee97b49b56b2a21c480abca70305dab6e2554343af4","abstract_canon_sha256":"026136bb5d5597a4ccecf988633bf427b84eb61683f8d338229a3d3100643b76"},"schema_version":"1.0"},"canonical_sha256":"710b92b0d6336f670315d1b3b0cb1f33cb2ff1c22d44d34378b2723d32e47a28","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:45:34.886141Z","signature_b64":"IoRQpQqxkb8BB9w7FP4MXUgTeY7HGfVW3PqWGhM1Vngq2lInleV5+UD1H+U/Oyjq87clHVu+Ms1IIwNMu3r8Bg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"710b92b0d6336f670315d1b3b0cb1f33cb2ff1c22d44d34378b2723d32e47a28","last_reissued_at":"2026-05-18T01:45:34.885596Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:45:34.885596Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1401.0110","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":"2026-05-18T01:45:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"J71VhpayY8QtsVUjDnZ61pmgrTs0v8H9DYROhZazfDbQxQaFSrAn+6oaL0FKR/1VQpNvyr2XhsVZTIM89LlAAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T17:55:56.113076Z"},"content_sha256":"0051def57fb49a42fac9c2001cef91d05e0544305ea2c9e5f5c1bfea7a2481e9","schema_version":"1.0","event_id":"sha256:0051def57fb49a42fac9c2001cef91d05e0544305ea2c9e5f5c1bfea7a2481e9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:OEFZFMGWGNXWOAYV2GZ3BSY7GP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Quest to Understand Supergranulation and Large-Scale Convection in the Sun","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.flu-dyn"],"primary_cat":"astro-ph.SR","authors_text":"Katepalli R. Sreenivasan, Shravan M. Hanasoge","submitted_at":"2013-12-31T08:02:33Z","abstract_excerpt":"Surface granulation of the Sun is primarily a consequence of thermal transport in the outer 1 % of the radius. Its typical scale of about 1 - 2 Mm is set by the balance between convection, free-streaming radiation, and the strong density stratification in the surface layers.\n  The physics of granulation is well understood, as demonstrated by the close agreement between numerical simulation, theory, and observation. Superimposed on the energetic granular structure comprising high-speed flows, are larger scale long-lived flow systems (~ 300 m/s) called supergranules. Supergranulation has a typic"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1401.0110","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":"2026-05-18T01:45:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wc2iKTFaPCXFUuAq05PKavETRjyP9SonZrOFkMMgziKQ98dzMZrxWqm/hxIq82IhTpgF6U7paAmSZp/N9ikGAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T17:55:56.113447Z"},"content_sha256":"4839143e9ac3dd837bd8223aec9de013cff939486a7d71fc3b27eb98a668b765","schema_version":"1.0","event_id":"sha256:4839143e9ac3dd837bd8223aec9de013cff939486a7d71fc3b27eb98a668b765"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OEFZFMGWGNXWOAYV2GZ3BSY7GP/bundle.json","state_url":"https://pith.science/pith/OEFZFMGWGNXWOAYV2GZ3BSY7GP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OEFZFMGWGNXWOAYV2GZ3BSY7GP/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":"2026-06-05T17:55:56Z","links":{"resolver":"https://pith.science/pith/OEFZFMGWGNXWOAYV2GZ3BSY7GP","bundle":"https://pith.science/pith/OEFZFMGWGNXWOAYV2GZ3BSY7GP/bundle.json","state":"https://pith.science/pith/OEFZFMGWGNXWOAYV2GZ3BSY7GP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OEFZFMGWGNXWOAYV2GZ3BSY7GP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:OEFZFMGWGNXWOAYV2GZ3BSY7GP","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":"026136bb5d5597a4ccecf988633bf427b84eb61683f8d338229a3d3100643b76","cross_cats_sorted":["physics.flu-dyn"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-12-31T08:02:33Z","title_canon_sha256":"f45e1f4614c0d9acaf98bee97b49b56b2a21c480abca70305dab6e2554343af4"},"schema_version":"1.0","source":{"id":"1401.0110","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1401.0110","created_at":"2026-05-18T01:45:34Z"},{"alias_kind":"arxiv_version","alias_value":"1401.0110v1","created_at":"2026-05-18T01:45:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1401.0110","created_at":"2026-05-18T01:45:34Z"},{"alias_kind":"pith_short_12","alias_value":"OEFZFMGWGNXW","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_16","alias_value":"OEFZFMGWGNXWOAYV","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_8","alias_value":"OEFZFMGW","created_at":"2026-05-18T12:27:54Z"}],"graph_snapshots":[{"event_id":"sha256:4839143e9ac3dd837bd8223aec9de013cff939486a7d71fc3b27eb98a668b765","target":"graph","created_at":"2026-05-18T01:45:34Z","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":"Surface granulation of the Sun is primarily a consequence of thermal transport in the outer 1 % of the radius. Its typical scale of about 1 - 2 Mm is set by the balance between convection, free-streaming radiation, and the strong density stratification in the surface layers.\n  The physics of granulation is well understood, as demonstrated by the close agreement between numerical simulation, theory, and observation. Superimposed on the energetic granular structure comprising high-speed flows, are larger scale long-lived flow systems (~ 300 m/s) called supergranules. Supergranulation has a typic","authors_text":"Katepalli R. Sreenivasan, Shravan M. Hanasoge","cross_cats":["physics.flu-dyn"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-12-31T08:02:33Z","title":"The Quest to Understand Supergranulation and Large-Scale Convection in the Sun"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1401.0110","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":"sha256:0051def57fb49a42fac9c2001cef91d05e0544305ea2c9e5f5c1bfea7a2481e9","target":"record","created_at":"2026-05-18T01:45:34Z","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":"026136bb5d5597a4ccecf988633bf427b84eb61683f8d338229a3d3100643b76","cross_cats_sorted":["physics.flu-dyn"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-12-31T08:02:33Z","title_canon_sha256":"f45e1f4614c0d9acaf98bee97b49b56b2a21c480abca70305dab6e2554343af4"},"schema_version":"1.0","source":{"id":"1401.0110","kind":"arxiv","version":1}},"canonical_sha256":"710b92b0d6336f670315d1b3b0cb1f33cb2ff1c22d44d34378b2723d32e47a28","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"710b92b0d6336f670315d1b3b0cb1f33cb2ff1c22d44d34378b2723d32e47a28","first_computed_at":"2026-05-18T01:45:34.885596Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:45:34.885596Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"IoRQpQqxkb8BB9w7FP4MXUgTeY7HGfVW3PqWGhM1Vngq2lInleV5+UD1H+U/Oyjq87clHVu+Ms1IIwNMu3r8Bg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:45:34.886141Z","signed_message":"canonical_sha256_bytes"},"source_id":"1401.0110","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0051def57fb49a42fac9c2001cef91d05e0544305ea2c9e5f5c1bfea7a2481e9","sha256:4839143e9ac3dd837bd8223aec9de013cff939486a7d71fc3b27eb98a668b765"],"state_sha256":"ffcd62432b18bb3119f63317f8bfac0bace90379c6cf46eb947bc60cd5d9f0a8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fAH07u/ev8/SpPpQTw6YdS+GPoJtw8O/po7V7mGHVVlm06Iyt8Dprlub+ao1c4Ep5s/OXUQg0Sc5omC8erhqCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T17:55:56.115532Z","bundle_sha256":"e7619d32d2059964f87f527a1ba6ca8990252a26edce2e94ee538f1192169a3e"}}