{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:XWDN6K5EODBAIT3YBR4ATHZNH5","short_pith_number":"pith:XWDN6K5E","canonical_record":{"source":{"id":"1507.01537","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.stat-mech","submitted_at":"2015-07-06T16:46:02Z","cross_cats_sorted":["math.DS","nlin.CD","physics.bio-ph","physics.chem-ph"],"title_canon_sha256":"71821b7c28a70f07c1a18d75074a593f362a0776e771fd242201c88b3c9f1458","abstract_canon_sha256":"109858b0af8f499aaf315ea47cadfca759a045e3f9a3292d73ba36c50799ddd2"},"schema_version":"1.0"},"canonical_sha256":"bd86df2ba470c2044f780c78099f2d3f6d38afb701caabe7234954a6cc14211d","source":{"kind":"arxiv","id":"1507.01537","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1507.01537","created_at":"2026-05-18T01:18:44Z"},{"alias_kind":"arxiv_version","alias_value":"1507.01537v4","created_at":"2026-05-18T01:18:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1507.01537","created_at":"2026-05-18T01:18:44Z"},{"alias_kind":"pith_short_12","alias_value":"XWDN6K5EODBA","created_at":"2026-05-18T12:29:50Z"},{"alias_kind":"pith_short_16","alias_value":"XWDN6K5EODBAIT3Y","created_at":"2026-05-18T12:29:50Z"},{"alias_kind":"pith_short_8","alias_value":"XWDN6K5E","created_at":"2026-05-18T12:29:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:XWDN6K5EODBAIT3YBR4ATHZNH5","target":"record","payload":{"canonical_record":{"source":{"id":"1507.01537","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.stat-mech","submitted_at":"2015-07-06T16:46:02Z","cross_cats_sorted":["math.DS","nlin.CD","physics.bio-ph","physics.chem-ph"],"title_canon_sha256":"71821b7c28a70f07c1a18d75074a593f362a0776e771fd242201c88b3c9f1458","abstract_canon_sha256":"109858b0af8f499aaf315ea47cadfca759a045e3f9a3292d73ba36c50799ddd2"},"schema_version":"1.0"},"canonical_sha256":"bd86df2ba470c2044f780c78099f2d3f6d38afb701caabe7234954a6cc14211d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:18:44.328256Z","signature_b64":"tvZT9EiOpd74fvkX8rxIC5trsf1cqhs91QC6dJOPJMNf4xcxZ9oseZXcXRTrLwptKkNvekISaS/fZFKkwYi5AQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bd86df2ba470c2044f780c78099f2d3f6d38afb701caabe7234954a6cc14211d","last_reissued_at":"2026-05-18T01:18:44.327654Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:18:44.327654Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1507.01537","source_version":4,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:18:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Dac+r4hQ3Fsh2xEARUMCxYg9FxS0CX31m8GQxh1f8nRV6IUmE0lVkzh0LKqom4qiuTdReOx5HVdhLyJ20MAYDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T20:22:31.433380Z"},"content_sha256":"269aa91df69a2406de63281a6f1ba7361c564fdbb7df3ab51d0555dcf36213ee","schema_version":"1.0","event_id":"sha256:269aa91df69a2406de63281a6f1ba7361c564fdbb7df3ab51d0555dcf36213ee"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:XWDN6K5EODBAIT3YBR4ATHZNH5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Identifying Functional Thermodynamics in Autonomous Maxwellian Ratchets","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.DS","nlin.CD","physics.bio-ph","physics.chem-ph"],"primary_cat":"cond-mat.stat-mech","authors_text":"A. B. Boyd, D. Mandal, J. P. Crutchfield","submitted_at":"2015-07-06T16:46:02Z","abstract_excerpt":"We introduce a family of Maxwellian Demons for which correlations among information bearing degrees of freedom can be calculated exactly and in compact analytical form. This allows one to precisely determine Demon functional thermodynamic operating regimes, when previous methods either misclassify or simply fail due to approximations they invoke. This reveals that these Demons are more functional than previous candidates. They too behave either as engines, lifting a mass against gravity by extracting energy from a single heat reservoir, or as Landauer erasers, consuming external work to remove"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1507.01537","kind":"arxiv","version":4},"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":"2026-05-18T01:18:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xA/PlRS2TKYe2uWV4IlRF1DzYMLnOh2TIN5wdkzPrqCX4e6KbZ0jPUxWckwlFIffhiIOfGSwlEJpEWNuaSLDCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T20:22:31.433813Z"},"content_sha256":"65a1361cfdf6241322880d2e5a39d27ba96e943286b01013f9d931ccfa92723d","schema_version":"1.0","event_id":"sha256:65a1361cfdf6241322880d2e5a39d27ba96e943286b01013f9d931ccfa92723d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XWDN6K5EODBAIT3YBR4ATHZNH5/bundle.json","state_url":"https://pith.science/pith/XWDN6K5EODBAIT3YBR4ATHZNH5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XWDN6K5EODBAIT3YBR4ATHZNH5/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":"2026-05-26T20:22:31Z","links":{"resolver":"https://pith.science/pith/XWDN6K5EODBAIT3YBR4ATHZNH5","bundle":"https://pith.science/pith/XWDN6K5EODBAIT3YBR4ATHZNH5/bundle.json","state":"https://pith.science/pith/XWDN6K5EODBAIT3YBR4ATHZNH5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XWDN6K5EODBAIT3YBR4ATHZNH5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:XWDN6K5EODBAIT3YBR4ATHZNH5","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":"109858b0af8f499aaf315ea47cadfca759a045e3f9a3292d73ba36c50799ddd2","cross_cats_sorted":["math.DS","nlin.CD","physics.bio-ph","physics.chem-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.stat-mech","submitted_at":"2015-07-06T16:46:02Z","title_canon_sha256":"71821b7c28a70f07c1a18d75074a593f362a0776e771fd242201c88b3c9f1458"},"schema_version":"1.0","source":{"id":"1507.01537","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1507.01537","created_at":"2026-05-18T01:18:44Z"},{"alias_kind":"arxiv_version","alias_value":"1507.01537v4","created_at":"2026-05-18T01:18:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1507.01537","created_at":"2026-05-18T01:18:44Z"},{"alias_kind":"pith_short_12","alias_value":"XWDN6K5EODBA","created_at":"2026-05-18T12:29:50Z"},{"alias_kind":"pith_short_16","alias_value":"XWDN6K5EODBAIT3Y","created_at":"2026-05-18T12:29:50Z"},{"alias_kind":"pith_short_8","alias_value":"XWDN6K5E","created_at":"2026-05-18T12:29:50Z"}],"graph_snapshots":[{"event_id":"sha256:65a1361cfdf6241322880d2e5a39d27ba96e943286b01013f9d931ccfa92723d","target":"graph","created_at":"2026-05-18T01:18:44Z","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 introduce a family of Maxwellian Demons for which correlations among information bearing degrees of freedom can be calculated exactly and in compact analytical form. This allows one to precisely determine Demon functional thermodynamic operating regimes, when previous methods either misclassify or simply fail due to approximations they invoke. This reveals that these Demons are more functional than previous candidates. They too behave either as engines, lifting a mass against gravity by extracting energy from a single heat reservoir, or as Landauer erasers, consuming external work to remove","authors_text":"A. B. Boyd, D. Mandal, J. P. Crutchfield","cross_cats":["math.DS","nlin.CD","physics.bio-ph","physics.chem-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.stat-mech","submitted_at":"2015-07-06T16:46:02Z","title":"Identifying Functional Thermodynamics in Autonomous Maxwellian Ratchets"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1507.01537","kind":"arxiv","version":4},"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":"sha256:269aa91df69a2406de63281a6f1ba7361c564fdbb7df3ab51d0555dcf36213ee","target":"record","created_at":"2026-05-18T01:18:44Z","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":"109858b0af8f499aaf315ea47cadfca759a045e3f9a3292d73ba36c50799ddd2","cross_cats_sorted":["math.DS","nlin.CD","physics.bio-ph","physics.chem-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.stat-mech","submitted_at":"2015-07-06T16:46:02Z","title_canon_sha256":"71821b7c28a70f07c1a18d75074a593f362a0776e771fd242201c88b3c9f1458"},"schema_version":"1.0","source":{"id":"1507.01537","kind":"arxiv","version":4}},"canonical_sha256":"bd86df2ba470c2044f780c78099f2d3f6d38afb701caabe7234954a6cc14211d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bd86df2ba470c2044f780c78099f2d3f6d38afb701caabe7234954a6cc14211d","first_computed_at":"2026-05-18T01:18:44.327654Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:18:44.327654Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"tvZT9EiOpd74fvkX8rxIC5trsf1cqhs91QC6dJOPJMNf4xcxZ9oseZXcXRTrLwptKkNvekISaS/fZFKkwYi5AQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:18:44.328256Z","signed_message":"canonical_sha256_bytes"},"source_id":"1507.01537","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:269aa91df69a2406de63281a6f1ba7361c564fdbb7df3ab51d0555dcf36213ee","sha256:65a1361cfdf6241322880d2e5a39d27ba96e943286b01013f9d931ccfa92723d"],"state_sha256":"fc4b5161f7263c72df4a6762fafc1847c1ca0fa319140855da42a742fde2ada7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"E//c75IiGpsrxdCm+71548g4Z41AlC72k4Tx65bzZtnGeYYGWpceFIkkanlWuQjLN99XklMa3zTLWMNzZ3EiDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T20:22:31.436991Z","bundle_sha256":"422941bf21321a9a60bce00cb063a1730c8532fc48e176b85c22448403890c63"}}