{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:YIMRZTSEBTFHFGA5X5UFSWRTMS","short_pith_number":"pith:YIMRZTSE","canonical_record":{"source":{"id":"2009.06920","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"eess.SY","submitted_at":"2020-09-15T08:29:14Z","cross_cats_sorted":["cs.SY"],"title_canon_sha256":"23cf0e42eda23078323cee5a69088b5cbca831560ab5f7e41e902d389de22c4a","abstract_canon_sha256":"3f212f91ffa9c9af986c1e3f7c25158f6f75e5d11cfafea68d48245279dd1dcc"},"schema_version":"1.0"},"canonical_sha256":"c2191cce440cca72981dbf68595a336499892a005f27b36ef21132645d852843","source":{"kind":"arxiv","id":"2009.06920","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2009.06920","created_at":"2026-07-05T03:56:27Z"},{"alias_kind":"arxiv_version","alias_value":"2009.06920v2","created_at":"2026-07-05T03:56:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2009.06920","created_at":"2026-07-05T03:56:27Z"},{"alias_kind":"pith_short_12","alias_value":"YIMRZTSEBTFH","created_at":"2026-07-05T03:56:27Z"},{"alias_kind":"pith_short_16","alias_value":"YIMRZTSEBTFHFGA5","created_at":"2026-07-05T03:56:27Z"},{"alias_kind":"pith_short_8","alias_value":"YIMRZTSE","created_at":"2026-07-05T03:56:27Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:YIMRZTSEBTFHFGA5X5UFSWRTMS","target":"record","payload":{"canonical_record":{"source":{"id":"2009.06920","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"eess.SY","submitted_at":"2020-09-15T08:29:14Z","cross_cats_sorted":["cs.SY"],"title_canon_sha256":"23cf0e42eda23078323cee5a69088b5cbca831560ab5f7e41e902d389de22c4a","abstract_canon_sha256":"3f212f91ffa9c9af986c1e3f7c25158f6f75e5d11cfafea68d48245279dd1dcc"},"schema_version":"1.0"},"canonical_sha256":"c2191cce440cca72981dbf68595a336499892a005f27b36ef21132645d852843","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:56:27.563362Z","signature_b64":"fQfU/uhUYQoj+qmx/cv3gMYqEu5KH5v1WWhqWDTv4ZmhR0IqnYLUBX75CCikiewRBr5S8Ss6rPDeXcWCONv6Dw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c2191cce440cca72981dbf68595a336499892a005f27b36ef21132645d852843","last_reissued_at":"2026-07-05T03:56:27.562865Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:56:27.562865Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2009.06920","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":"2026-07-05T03:56:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gUWzGP2/q4NHFXUMWUYK6d1qbFYFPxiqyFEibMs/9WzaqAnKKroPWmGXvpmHfPvNfO7lImD4+RLDLgtwIi9WAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-22T17:46:04.351346Z"},"content_sha256":"d8da2a0efcddc338c16020d3dcbf863f36ea6e52a88716e457ea87caa31334a9","schema_version":"1.0","event_id":"sha256:d8da2a0efcddc338c16020d3dcbf863f36ea6e52a88716e457ea87caa31334a9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:YIMRZTSEBTFHFGA5X5UFSWRTMS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Robust MPC with data-driven demand forecasting for frequency regulation with heat pumps","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":["cs.SY"],"primary_cat":"eess.SY","authors_text":"Felix B\\\"unning, John Lygeros, Joseph Warrington, Philipp Heer, Roy S. Smith","submitted_at":"2020-09-15T08:29:14Z","abstract_excerpt":"With the increased amount of volatile renewable energy sources connected to the electricity grid, and the phase-out of fossil fuel based power plants, there is an increased need for frequency regulation. On the demand side, frequency regulation services can be offered by buildings or districts that are equipped with electric heating or cooling systems, by exploiting their thermal inertia. Existing approaches for tapping into this potential typically rely on dynamic building models, which in practice can be challenging to obtain and maintain. As a result, practical implementations of such syste"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2009.06920","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2009.06920/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T03:56:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wuHv4IhmZ9COTR7MDInD6deosMl5eQPsFvX7Zi+REo/i+d1gNGngyEabr7aLKEYIlEm5A4yeCqpVYXemUL2IDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-22T17:46:04.351854Z"},"content_sha256":"5c59132cb2fcb3d69dcbb73686d48571a79ee4b7cb9dcf9daa5ed3b1ef3496d2","schema_version":"1.0","event_id":"sha256:5c59132cb2fcb3d69dcbb73686d48571a79ee4b7cb9dcf9daa5ed3b1ef3496d2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YIMRZTSEBTFHFGA5X5UFSWRTMS/bundle.json","state_url":"https://pith.science/pith/YIMRZTSEBTFHFGA5X5UFSWRTMS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YIMRZTSEBTFHFGA5X5UFSWRTMS/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":"2026-08-22T17:46:04Z","links":{"resolver":"https://pith.science/pith/YIMRZTSEBTFHFGA5X5UFSWRTMS","bundle":"https://pith.science/pith/YIMRZTSEBTFHFGA5X5UFSWRTMS/bundle.json","state":"https://pith.science/pith/YIMRZTSEBTFHFGA5X5UFSWRTMS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YIMRZTSEBTFHFGA5X5UFSWRTMS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:YIMRZTSEBTFHFGA5X5UFSWRTMS","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":"3f212f91ffa9c9af986c1e3f7c25158f6f75e5d11cfafea68d48245279dd1dcc","cross_cats_sorted":["cs.SY"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"eess.SY","submitted_at":"2020-09-15T08:29:14Z","title_canon_sha256":"23cf0e42eda23078323cee5a69088b5cbca831560ab5f7e41e902d389de22c4a"},"schema_version":"1.0","source":{"id":"2009.06920","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2009.06920","created_at":"2026-07-05T03:56:27Z"},{"alias_kind":"arxiv_version","alias_value":"2009.06920v2","created_at":"2026-07-05T03:56:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2009.06920","created_at":"2026-07-05T03:56:27Z"},{"alias_kind":"pith_short_12","alias_value":"YIMRZTSEBTFH","created_at":"2026-07-05T03:56:27Z"},{"alias_kind":"pith_short_16","alias_value":"YIMRZTSEBTFHFGA5","created_at":"2026-07-05T03:56:27Z"},{"alias_kind":"pith_short_8","alias_value":"YIMRZTSE","created_at":"2026-07-05T03:56:27Z"}],"graph_snapshots":[{"event_id":"sha256:5c59132cb2fcb3d69dcbb73686d48571a79ee4b7cb9dcf9daa5ed3b1ef3496d2","target":"graph","created_at":"2026-07-05T03:56:27Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2009.06920/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"With the increased amount of volatile renewable energy sources connected to the electricity grid, and the phase-out of fossil fuel based power plants, there is an increased need for frequency regulation. On the demand side, frequency regulation services can be offered by buildings or districts that are equipped with electric heating or cooling systems, by exploiting their thermal inertia. Existing approaches for tapping into this potential typically rely on dynamic building models, which in practice can be challenging to obtain and maintain. As a result, practical implementations of such syste","authors_text":"Felix B\\\"unning, John Lygeros, Joseph Warrington, Philipp Heer, Roy S. Smith","cross_cats":["cs.SY"],"headline":"","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"eess.SY","submitted_at":"2020-09-15T08:29:14Z","title":"Robust MPC with data-driven demand forecasting for frequency regulation with heat pumps"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2009.06920","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:d8da2a0efcddc338c16020d3dcbf863f36ea6e52a88716e457ea87caa31334a9","target":"record","created_at":"2026-07-05T03:56:27Z","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":"3f212f91ffa9c9af986c1e3f7c25158f6f75e5d11cfafea68d48245279dd1dcc","cross_cats_sorted":["cs.SY"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"eess.SY","submitted_at":"2020-09-15T08:29:14Z","title_canon_sha256":"23cf0e42eda23078323cee5a69088b5cbca831560ab5f7e41e902d389de22c4a"},"schema_version":"1.0","source":{"id":"2009.06920","kind":"arxiv","version":2}},"canonical_sha256":"c2191cce440cca72981dbf68595a336499892a005f27b36ef21132645d852843","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c2191cce440cca72981dbf68595a336499892a005f27b36ef21132645d852843","first_computed_at":"2026-07-05T03:56:27.562865Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:56:27.562865Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"fQfU/uhUYQoj+qmx/cv3gMYqEu5KH5v1WWhqWDTv4ZmhR0IqnYLUBX75CCikiewRBr5S8Ss6rPDeXcWCONv6Dw==","signature_status":"signed_v1","signed_at":"2026-07-05T03:56:27.563362Z","signed_message":"canonical_sha256_bytes"},"source_id":"2009.06920","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d8da2a0efcddc338c16020d3dcbf863f36ea6e52a88716e457ea87caa31334a9","sha256:5c59132cb2fcb3d69dcbb73686d48571a79ee4b7cb9dcf9daa5ed3b1ef3496d2"],"state_sha256":"2003e60bca286fadaa028b430018c554f62d98c608720b99954a2c9f580772b7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kgGMZ2Nk4MYJPhpipOtTzEyJaANAIT5sDuafga/pjkYXfZlFd8SMuJvitz2GZJkDaav4wDYK+WW826+0iozABg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-22T17:46:04.356578Z","bundle_sha256":"919d19614acafeaaf007e2d888c31118c4b34f2a9f126b30c8f10ead918397bc"}}