{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:A2BS4IDOORVIDMIDV4KWOZOS5W","short_pith_number":"pith:A2BS4IDO","canonical_record":{"source":{"id":"1612.07922","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.stat-mech","submitted_at":"2016-12-23T10:24:48Z","cross_cats_sorted":["physics.class-ph"],"title_canon_sha256":"f554ff309f95e1223398576fe5ae178f4a8c80783e1f8bd691922f241523c1bc","abstract_canon_sha256":"823700175eead4bf713b1dafcf7b0ff70e93e528c7108a4e4418d43ce4d50ae5"},"schema_version":"1.0"},"canonical_sha256":"06832e206e746a81b103af156765d2ed9f3c71e513d13d923a7b169ccccdcd51","source":{"kind":"arxiv","id":"1612.07922","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1612.07922","created_at":"2026-05-18T00:38:03Z"},{"alias_kind":"arxiv_version","alias_value":"1612.07922v2","created_at":"2026-05-18T00:38:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1612.07922","created_at":"2026-05-18T00:38:03Z"},{"alias_kind":"pith_short_12","alias_value":"A2BS4IDOORVI","created_at":"2026-05-18T12:30:04Z"},{"alias_kind":"pith_short_16","alias_value":"A2BS4IDOORVIDMID","created_at":"2026-05-18T12:30:04Z"},{"alias_kind":"pith_short_8","alias_value":"A2BS4IDO","created_at":"2026-05-18T12:30:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:A2BS4IDOORVIDMIDV4KWOZOS5W","target":"record","payload":{"canonical_record":{"source":{"id":"1612.07922","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.stat-mech","submitted_at":"2016-12-23T10:24:48Z","cross_cats_sorted":["physics.class-ph"],"title_canon_sha256":"f554ff309f95e1223398576fe5ae178f4a8c80783e1f8bd691922f241523c1bc","abstract_canon_sha256":"823700175eead4bf713b1dafcf7b0ff70e93e528c7108a4e4418d43ce4d50ae5"},"schema_version":"1.0"},"canonical_sha256":"06832e206e746a81b103af156765d2ed9f3c71e513d13d923a7b169ccccdcd51","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:38:03.739753Z","signature_b64":"1Xa5Rwhhk8Kh9LhbmjZZrMqQXLeR1nfI/oBcbBw93ElEVTQZzMLrcq3rDyTOCa1+rYc2sD8TUQrrE/PxJHo/Dw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"06832e206e746a81b103af156765d2ed9f3c71e513d13d923a7b169ccccdcd51","last_reissued_at":"2026-05-18T00:38:03.739201Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:38:03.739201Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1612.07922","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:38:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YFH4eMrProbaZV2gJsgRUaaYnTs/LJ/xCwzTMHYvvcDi8fCJV1Q5Ao5Hs9Z+D6ErbZ1siAlvduwtk6fVwE4/BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T18:15:57.720075Z"},"content_sha256":"660b1b664560b0e401b9c3d535db7ef79b6bbd2d64f4c62968e51a2ee6c3b467","schema_version":"1.0","event_id":"sha256:660b1b664560b0e401b9c3d535db7ef79b6bbd2d64f4c62968e51a2ee6c3b467"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:A2BS4IDOORVIDMIDV4KWOZOS5W","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"True nature of the Curzon-Ahlborn efficiency","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.class-ph"],"primary_cat":"cond-mat.stat-mech","authors_text":"Christophe Goupil, Henni Ouerdane, Philippe Lecoeur, Yann Apertet","submitted_at":"2016-12-23T10:24:48Z","abstract_excerpt":"The Curzon-Ahlborn efficiency has long served as the definite upper bound for the thermal efficiency at maximum output power, and has thus shaped the development of finite-time thermodynamics. In this paper, we repeal the ruling consensus according to which it has a genuine universal character that can be derived from linear irreversible thermodynamics. We demonstrate that the Curzon-Ahlborn efficiency should instead properly be associated with a particular case of nonlinear heat engines, and we derive a generalized expression for the efficiency at maximum power beyond the restrictive case of "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1612.07922","kind":"arxiv","version":2},"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":"2026-05-18T00:38:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2i/8xDjyPbTyjO1JEVUPDrE22tLxg5Dt2SqT2e7RMcNBnmfb6XWywvSUZviK0dCiB4rjJD5HYGpaRz3DQQ9vDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T18:15:57.720718Z"},"content_sha256":"592c4bb0780ea115ea3a885ea363607f61f6bb641117612287ff0606ed344ca8","schema_version":"1.0","event_id":"sha256:592c4bb0780ea115ea3a885ea363607f61f6bb641117612287ff0606ed344ca8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/A2BS4IDOORVIDMIDV4KWOZOS5W/bundle.json","state_url":"https://pith.science/pith/A2BS4IDOORVIDMIDV4KWOZOS5W/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/A2BS4IDOORVIDMIDV4KWOZOS5W/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":"2026-05-25T18:15:57Z","links":{"resolver":"https://pith.science/pith/A2BS4IDOORVIDMIDV4KWOZOS5W","bundle":"https://pith.science/pith/A2BS4IDOORVIDMIDV4KWOZOS5W/bundle.json","state":"https://pith.science/pith/A2BS4IDOORVIDMIDV4KWOZOS5W/state.json","well_known_bundle":"https://pith.science/.well-known/pith/A2BS4IDOORVIDMIDV4KWOZOS5W/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:A2BS4IDOORVIDMIDV4KWOZOS5W","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":"823700175eead4bf713b1dafcf7b0ff70e93e528c7108a4e4418d43ce4d50ae5","cross_cats_sorted":["physics.class-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.stat-mech","submitted_at":"2016-12-23T10:24:48Z","title_canon_sha256":"f554ff309f95e1223398576fe5ae178f4a8c80783e1f8bd691922f241523c1bc"},"schema_version":"1.0","source":{"id":"1612.07922","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1612.07922","created_at":"2026-05-18T00:38:03Z"},{"alias_kind":"arxiv_version","alias_value":"1612.07922v2","created_at":"2026-05-18T00:38:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1612.07922","created_at":"2026-05-18T00:38:03Z"},{"alias_kind":"pith_short_12","alias_value":"A2BS4IDOORVI","created_at":"2026-05-18T12:30:04Z"},{"alias_kind":"pith_short_16","alias_value":"A2BS4IDOORVIDMID","created_at":"2026-05-18T12:30:04Z"},{"alias_kind":"pith_short_8","alias_value":"A2BS4IDO","created_at":"2026-05-18T12:30:04Z"}],"graph_snapshots":[{"event_id":"sha256:592c4bb0780ea115ea3a885ea363607f61f6bb641117612287ff0606ed344ca8","target":"graph","created_at":"2026-05-18T00:38:03Z","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":"The Curzon-Ahlborn efficiency has long served as the definite upper bound for the thermal efficiency at maximum output power, and has thus shaped the development of finite-time thermodynamics. In this paper, we repeal the ruling consensus according to which it has a genuine universal character that can be derived from linear irreversible thermodynamics. We demonstrate that the Curzon-Ahlborn efficiency should instead properly be associated with a particular case of nonlinear heat engines, and we derive a generalized expression for the efficiency at maximum power beyond the restrictive case of ","authors_text":"Christophe Goupil, Henni Ouerdane, Philippe Lecoeur, Yann Apertet","cross_cats":["physics.class-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.stat-mech","submitted_at":"2016-12-23T10:24:48Z","title":"True nature of the Curzon-Ahlborn efficiency"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1612.07922","kind":"arxiv","version":2},"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":"sha256:660b1b664560b0e401b9c3d535db7ef79b6bbd2d64f4c62968e51a2ee6c3b467","target":"record","created_at":"2026-05-18T00:38:03Z","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":"823700175eead4bf713b1dafcf7b0ff70e93e528c7108a4e4418d43ce4d50ae5","cross_cats_sorted":["physics.class-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.stat-mech","submitted_at":"2016-12-23T10:24:48Z","title_canon_sha256":"f554ff309f95e1223398576fe5ae178f4a8c80783e1f8bd691922f241523c1bc"},"schema_version":"1.0","source":{"id":"1612.07922","kind":"arxiv","version":2}},"canonical_sha256":"06832e206e746a81b103af156765d2ed9f3c71e513d13d923a7b169ccccdcd51","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"06832e206e746a81b103af156765d2ed9f3c71e513d13d923a7b169ccccdcd51","first_computed_at":"2026-05-18T00:38:03.739201Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:38:03.739201Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1Xa5Rwhhk8Kh9LhbmjZZrMqQXLeR1nfI/oBcbBw93ElEVTQZzMLrcq3rDyTOCa1+rYc2sD8TUQrrE/PxJHo/Dw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:38:03.739753Z","signed_message":"canonical_sha256_bytes"},"source_id":"1612.07922","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:660b1b664560b0e401b9c3d535db7ef79b6bbd2d64f4c62968e51a2ee6c3b467","sha256:592c4bb0780ea115ea3a885ea363607f61f6bb641117612287ff0606ed344ca8"],"state_sha256":"996be3fcebf65cf67048ae20ce646d996f14c61ffc34be399f630f065ba07f61"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oz10rEMsj4XxXiixaU5cn5u2TX2nmQxJ6cgfaHCpcMsS9XVNMOlIOY4DnU+BxbVVfjZ8RnqHxffT8kw7h9vHBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T18:15:57.723955Z","bundle_sha256":"a13325533cc94fbb2eb9c661fdbbac5c03d18015b46035b12f733e5775982826"}}