{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:WLQ3EKIRVLG5Z7NNJGKW7EWI6F","short_pith_number":"pith:WLQ3EKIR","canonical_record":{"source":{"id":"1407.0138","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2014-07-01T08:33:10Z","cross_cats_sorted":["cond-mat.stat-mech"],"title_canon_sha256":"3a2e6e292a84a21d9ba5b510056587685b6673edbbcaf2709f79009965ac4226","abstract_canon_sha256":"e408c2d4992038516b9b6eeb84de8168b3a5ef501d7c530703d16421b1b10840"},"schema_version":"1.0"},"canonical_sha256":"b2e1b22911aacddcfdad49956f92c8f17fc46c765e511cf445a42327d6353b34","source":{"kind":"arxiv","id":"1407.0138","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1407.0138","created_at":"2026-05-18T02:27:32Z"},{"alias_kind":"arxiv_version","alias_value":"1407.0138v2","created_at":"2026-05-18T02:27:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1407.0138","created_at":"2026-05-18T02:27:32Z"},{"alias_kind":"pith_short_12","alias_value":"WLQ3EKIRVLG5","created_at":"2026-05-18T12:28:54Z"},{"alias_kind":"pith_short_16","alias_value":"WLQ3EKIRVLG5Z7NN","created_at":"2026-05-18T12:28:54Z"},{"alias_kind":"pith_short_8","alias_value":"WLQ3EKIR","created_at":"2026-05-18T12:28:54Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:WLQ3EKIRVLG5Z7NNJGKW7EWI6F","target":"record","payload":{"canonical_record":{"source":{"id":"1407.0138","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2014-07-01T08:33:10Z","cross_cats_sorted":["cond-mat.stat-mech"],"title_canon_sha256":"3a2e6e292a84a21d9ba5b510056587685b6673edbbcaf2709f79009965ac4226","abstract_canon_sha256":"e408c2d4992038516b9b6eeb84de8168b3a5ef501d7c530703d16421b1b10840"},"schema_version":"1.0"},"canonical_sha256":"b2e1b22911aacddcfdad49956f92c8f17fc46c765e511cf445a42327d6353b34","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:27:32.350010Z","signature_b64":"glzCkQjTTienYlFM/65YwvRbFqjawTb5zPdQbq9ltxpvRPg6RptZLxKv5S2jGewDjif6Pz2X9S/YoFjEBV7fCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b2e1b22911aacddcfdad49956f92c8f17fc46c765e511cf445a42327d6353b34","last_reissued_at":"2026-05-18T02:27:32.349249Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:27:32.349249Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1407.0138","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":"2026-05-18T02:27:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ietHoUjepnvwjC0mprScETSctnlv1S8Itz94Tlo4PKWKI+0vu1RuufkAkzJUDq+KkhvROI37uw/Gm9i8Fgz+BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T21:47:23.562707Z"},"content_sha256":"2ebd602d4b478623ff479136961156e328d36fb3aa52e980378bd8b0d6d98afe","schema_version":"1.0","event_id":"sha256:2ebd602d4b478623ff479136961156e328d36fb3aa52e980378bd8b0d6d98afe"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:WLQ3EKIRVLG5Z7NNJGKW7EWI6F","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"xTRAM: Estimating equilibrium expectations from time-correlated simulation data at multiple thermodynamic states","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.stat-mech"],"primary_cat":"physics.comp-ph","authors_text":"Antonia S. J. S. Mey, Frank No\\'e, Hao Wu","submitted_at":"2014-07-01T08:33:10Z","abstract_excerpt":"Computing the equilibrium properties of complex systems, such as free energy differences, is often hampered by rare events in the dynamics. Enhanced sampling methods may be used in order to speed up sampling by, for example, using high temperatures, as in parallel tempering, or simulating with a biasing potential such as in the case of umbrella sampling. The equilibrium properties of the thermodynamic state of interest (e.g., lowest temperature or unbiased potential) can be computed using reweighting estimators such as the weighted histogram analysis method or the multistate Bennett acceptance"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1407.0138","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":"2026-05-18T02:27:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1TelYFUGLnfpecv5TeVajlrS+TH7+ipSgsKDsNVsL/IdeEHjzFPUwzfXsbUuk0Ddh2hi3ra53GtiDBLXYcp2Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T21:47:23.563392Z"},"content_sha256":"a07d925d7bd252bf0f8e68c5894d7bece9866a411cb22f32a3df4da3f1cf3c66","schema_version":"1.0","event_id":"sha256:a07d925d7bd252bf0f8e68c5894d7bece9866a411cb22f32a3df4da3f1cf3c66"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WLQ3EKIRVLG5Z7NNJGKW7EWI6F/bundle.json","state_url":"https://pith.science/pith/WLQ3EKIRVLG5Z7NNJGKW7EWI6F/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WLQ3EKIRVLG5Z7NNJGKW7EWI6F/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":"2026-05-27T21:47:23Z","links":{"resolver":"https://pith.science/pith/WLQ3EKIRVLG5Z7NNJGKW7EWI6F","bundle":"https://pith.science/pith/WLQ3EKIRVLG5Z7NNJGKW7EWI6F/bundle.json","state":"https://pith.science/pith/WLQ3EKIRVLG5Z7NNJGKW7EWI6F/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WLQ3EKIRVLG5Z7NNJGKW7EWI6F/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:WLQ3EKIRVLG5Z7NNJGKW7EWI6F","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":"e408c2d4992038516b9b6eeb84de8168b3a5ef501d7c530703d16421b1b10840","cross_cats_sorted":["cond-mat.stat-mech"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2014-07-01T08:33:10Z","title_canon_sha256":"3a2e6e292a84a21d9ba5b510056587685b6673edbbcaf2709f79009965ac4226"},"schema_version":"1.0","source":{"id":"1407.0138","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1407.0138","created_at":"2026-05-18T02:27:32Z"},{"alias_kind":"arxiv_version","alias_value":"1407.0138v2","created_at":"2026-05-18T02:27:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1407.0138","created_at":"2026-05-18T02:27:32Z"},{"alias_kind":"pith_short_12","alias_value":"WLQ3EKIRVLG5","created_at":"2026-05-18T12:28:54Z"},{"alias_kind":"pith_short_16","alias_value":"WLQ3EKIRVLG5Z7NN","created_at":"2026-05-18T12:28:54Z"},{"alias_kind":"pith_short_8","alias_value":"WLQ3EKIR","created_at":"2026-05-18T12:28:54Z"}],"graph_snapshots":[{"event_id":"sha256:a07d925d7bd252bf0f8e68c5894d7bece9866a411cb22f32a3df4da3f1cf3c66","target":"graph","created_at":"2026-05-18T02:27:32Z","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":"Computing the equilibrium properties of complex systems, such as free energy differences, is often hampered by rare events in the dynamics. Enhanced sampling methods may be used in order to speed up sampling by, for example, using high temperatures, as in parallel tempering, or simulating with a biasing potential such as in the case of umbrella sampling. The equilibrium properties of the thermodynamic state of interest (e.g., lowest temperature or unbiased potential) can be computed using reweighting estimators such as the weighted histogram analysis method or the multistate Bennett acceptance","authors_text":"Antonia S. J. S. Mey, Frank No\\'e, Hao Wu","cross_cats":["cond-mat.stat-mech"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2014-07-01T08:33:10Z","title":"xTRAM: Estimating equilibrium expectations from time-correlated simulation data at multiple thermodynamic states"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1407.0138","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":"sha256:2ebd602d4b478623ff479136961156e328d36fb3aa52e980378bd8b0d6d98afe","target":"record","created_at":"2026-05-18T02:27:32Z","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":"e408c2d4992038516b9b6eeb84de8168b3a5ef501d7c530703d16421b1b10840","cross_cats_sorted":["cond-mat.stat-mech"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2014-07-01T08:33:10Z","title_canon_sha256":"3a2e6e292a84a21d9ba5b510056587685b6673edbbcaf2709f79009965ac4226"},"schema_version":"1.0","source":{"id":"1407.0138","kind":"arxiv","version":2}},"canonical_sha256":"b2e1b22911aacddcfdad49956f92c8f17fc46c765e511cf445a42327d6353b34","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b2e1b22911aacddcfdad49956f92c8f17fc46c765e511cf445a42327d6353b34","first_computed_at":"2026-05-18T02:27:32.349249Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:27:32.349249Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"glzCkQjTTienYlFM/65YwvRbFqjawTb5zPdQbq9ltxpvRPg6RptZLxKv5S2jGewDjif6Pz2X9S/YoFjEBV7fCA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:27:32.350010Z","signed_message":"canonical_sha256_bytes"},"source_id":"1407.0138","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2ebd602d4b478623ff479136961156e328d36fb3aa52e980378bd8b0d6d98afe","sha256:a07d925d7bd252bf0f8e68c5894d7bece9866a411cb22f32a3df4da3f1cf3c66"],"state_sha256":"6239f9b14913ea0cca7821df2494379700362bea503535a99b312eb680507313"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kabgbhr45ZgAJq/Ja49qYjapX+GuPELYtR3AnQYFJ9rur8cfY5MgsxVfA6aM+UHZb3hSFKNZEqq3TKmico0rCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T21:47:23.566452Z","bundle_sha256":"b4a9d8af1a86f805a57e9fe9ffa0693f8d802000cc88e063cc94936a8b1e7da1"}}