{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:UCL4BEJRNJXMVMKXQDM5BK6DDZ","short_pith_number":"pith:UCL4BEJR","canonical_record":{"source":{"id":"1511.06695","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.stat-mech","submitted_at":"2015-11-20T17:15:04Z","cross_cats_sorted":["nlin.CD","physics.flu-dyn"],"title_canon_sha256":"462c1e49dd57ae2fae0e846d380d139827dbdb28a8bd277064128c6590d17b26","abstract_canon_sha256":"f5981f6650ed1b147568647a506e5d682a8e0df7971c42a1878d92d2d771af11"},"schema_version":"1.0"},"canonical_sha256":"a097c091316a6ecab15780d9d0abc31e7002a4e0744af528d855df8fce3e26fa","source":{"kind":"arxiv","id":"1511.06695","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1511.06695","created_at":"2026-05-18T01:11:17Z"},{"alias_kind":"arxiv_version","alias_value":"1511.06695v1","created_at":"2026-05-18T01:11:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1511.06695","created_at":"2026-05-18T01:11:17Z"},{"alias_kind":"pith_short_12","alias_value":"UCL4BEJRNJXM","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_16","alias_value":"UCL4BEJRNJXMVMKX","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_8","alias_value":"UCL4BEJR","created_at":"2026-05-18T12:29:44Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:UCL4BEJRNJXMVMKXQDM5BK6DDZ","target":"record","payload":{"canonical_record":{"source":{"id":"1511.06695","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.stat-mech","submitted_at":"2015-11-20T17:15:04Z","cross_cats_sorted":["nlin.CD","physics.flu-dyn"],"title_canon_sha256":"462c1e49dd57ae2fae0e846d380d139827dbdb28a8bd277064128c6590d17b26","abstract_canon_sha256":"f5981f6650ed1b147568647a506e5d682a8e0df7971c42a1878d92d2d771af11"},"schema_version":"1.0"},"canonical_sha256":"a097c091316a6ecab15780d9d0abc31e7002a4e0744af528d855df8fce3e26fa","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:11:17.929443Z","signature_b64":"+UlK7T0hXSkNnC4vm5JRnzUqMLFxvk24l3gTji9MN5GjSHPwE1uHtZvAP3MSJmVyxJLGENKgTp7Kmq5ilbwfBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a097c091316a6ecab15780d9d0abc31e7002a4e0744af528d855df8fce3e26fa","last_reissued_at":"2026-05-18T01:11:17.928974Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:11:17.928974Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1511.06695","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":"2026-05-18T01:11:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TEnaGJTXmNMyjdxCayF8L6llwZ6Qxjyv7PzbHYaQYkMZXa1D4Di5M3THVJIQB1hguV1c+u9bHMdhIHhsyDcEDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T19:57:36.028203Z"},"content_sha256":"2fb38bd4f932424fa7c46452de85dcc75306d758ea593c49a119f90653f19673","schema_version":"1.0","event_id":"sha256:2fb38bd4f932424fa7c46452de85dcc75306d758ea593c49a119f90653f19673"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:UCL4BEJRNJXMVMKXQDM5BK6DDZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Fluctuations of entropy production in turbulent thermal convection","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nlin.CD","physics.flu-dyn"],"primary_cat":"cond-mat.stat-mech","authors_text":"Francesco Zonta, Sergio Chibbaro","submitted_at":"2015-11-20T17:15:04Z","abstract_excerpt":"We report on a numerical experiment performed to analyze fluctuations of the entropy production in turbulent thermal convection, a physical configuration that represents here a prototypical case of an out-of-equilibrium dissipative system. We estimate the entropy production from instantaneous measurements of the local temperature and velocity fields sampled along the trajectory of a large number of point-wise Lagrangian tracers. The entropy production is characterized by large fluctuations and becomes often negative. This represents a sort of \"finite-time\" violation of the second principle of "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1511.06695","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":"2026-05-18T01:11:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"n8qmZt6D+ylJftgPHlwL1x8O3BTR+065bYhjJsvg5AQCO5WCn40i9/9HjZnOzkVU5oInvJrX6XwXIsB8CAz2Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T19:57:36.028930Z"},"content_sha256":"1395e6a3104210c65c2db71835a25c2c15742d8ab2afe661179bda575f6e1099","schema_version":"1.0","event_id":"sha256:1395e6a3104210c65c2db71835a25c2c15742d8ab2afe661179bda575f6e1099"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UCL4BEJRNJXMVMKXQDM5BK6DDZ/bundle.json","state_url":"https://pith.science/pith/UCL4BEJRNJXMVMKXQDM5BK6DDZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UCL4BEJRNJXMVMKXQDM5BK6DDZ/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":"2026-06-05T19:57:36Z","links":{"resolver":"https://pith.science/pith/UCL4BEJRNJXMVMKXQDM5BK6DDZ","bundle":"https://pith.science/pith/UCL4BEJRNJXMVMKXQDM5BK6DDZ/bundle.json","state":"https://pith.science/pith/UCL4BEJRNJXMVMKXQDM5BK6DDZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UCL4BEJRNJXMVMKXQDM5BK6DDZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:UCL4BEJRNJXMVMKXQDM5BK6DDZ","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":"f5981f6650ed1b147568647a506e5d682a8e0df7971c42a1878d92d2d771af11","cross_cats_sorted":["nlin.CD","physics.flu-dyn"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.stat-mech","submitted_at":"2015-11-20T17:15:04Z","title_canon_sha256":"462c1e49dd57ae2fae0e846d380d139827dbdb28a8bd277064128c6590d17b26"},"schema_version":"1.0","source":{"id":"1511.06695","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1511.06695","created_at":"2026-05-18T01:11:17Z"},{"alias_kind":"arxiv_version","alias_value":"1511.06695v1","created_at":"2026-05-18T01:11:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1511.06695","created_at":"2026-05-18T01:11:17Z"},{"alias_kind":"pith_short_12","alias_value":"UCL4BEJRNJXM","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_16","alias_value":"UCL4BEJRNJXMVMKX","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_8","alias_value":"UCL4BEJR","created_at":"2026-05-18T12:29:44Z"}],"graph_snapshots":[{"event_id":"sha256:1395e6a3104210c65c2db71835a25c2c15742d8ab2afe661179bda575f6e1099","target":"graph","created_at":"2026-05-18T01:11:17Z","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":"We report on a numerical experiment performed to analyze fluctuations of the entropy production in turbulent thermal convection, a physical configuration that represents here a prototypical case of an out-of-equilibrium dissipative system. We estimate the entropy production from instantaneous measurements of the local temperature and velocity fields sampled along the trajectory of a large number of point-wise Lagrangian tracers. The entropy production is characterized by large fluctuations and becomes often negative. This represents a sort of \"finite-time\" violation of the second principle of ","authors_text":"Francesco Zonta, Sergio Chibbaro","cross_cats":["nlin.CD","physics.flu-dyn"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.stat-mech","submitted_at":"2015-11-20T17:15:04Z","title":"Fluctuations of entropy production in turbulent thermal convection"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1511.06695","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":"sha256:2fb38bd4f932424fa7c46452de85dcc75306d758ea593c49a119f90653f19673","target":"record","created_at":"2026-05-18T01:11:17Z","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":"f5981f6650ed1b147568647a506e5d682a8e0df7971c42a1878d92d2d771af11","cross_cats_sorted":["nlin.CD","physics.flu-dyn"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.stat-mech","submitted_at":"2015-11-20T17:15:04Z","title_canon_sha256":"462c1e49dd57ae2fae0e846d380d139827dbdb28a8bd277064128c6590d17b26"},"schema_version":"1.0","source":{"id":"1511.06695","kind":"arxiv","version":1}},"canonical_sha256":"a097c091316a6ecab15780d9d0abc31e7002a4e0744af528d855df8fce3e26fa","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a097c091316a6ecab15780d9d0abc31e7002a4e0744af528d855df8fce3e26fa","first_computed_at":"2026-05-18T01:11:17.928974Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:11:17.928974Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+UlK7T0hXSkNnC4vm5JRnzUqMLFxvk24l3gTji9MN5GjSHPwE1uHtZvAP3MSJmVyxJLGENKgTp7Kmq5ilbwfBw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:11:17.929443Z","signed_message":"canonical_sha256_bytes"},"source_id":"1511.06695","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2fb38bd4f932424fa7c46452de85dcc75306d758ea593c49a119f90653f19673","sha256:1395e6a3104210c65c2db71835a25c2c15742d8ab2afe661179bda575f6e1099"],"state_sha256":"c37c951f40e47fa521c5c0c2a8c9b5368d3fa472834fbbc435232c3906649695"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iOCQI7xq6kbmDCov/P0D9L1AAkQ/1zlZ2wtgJaTsSRhuh4R5hJ4Y//6xuReQzlUx7fURjqB2zvKs0ywVdAzLBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T19:57:36.033071Z","bundle_sha256":"b889997ccd728aeedb09703ba46b7a326480c048da4a8057e3f3b152161ad6f0"}}