{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:KWB2H7G4BFTKER7VKQ2GJBBUPE","short_pith_number":"pith:KWB2H7G4","canonical_record":{"source":{"id":"1310.0586","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SY","submitted_at":"2013-10-02T06:35:43Z","cross_cats_sorted":["math.OC"],"title_canon_sha256":"1ca6b8be96b250709379b3988a6fc84a87fa94f729697c7032a0ec3cdfe7dd3c","abstract_canon_sha256":"7ac98c8e3b845e31701d9ad41c736fe731ca4571d595813a3f1ce0fda6b84501"},"schema_version":"1.0"},"canonical_sha256":"5583a3fcdc0966a247f5543464843479046596dabaf9bcc192858972f2796d19","source":{"kind":"arxiv","id":"1310.0586","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1310.0586","created_at":"2026-05-18T02:42:14Z"},{"alias_kind":"arxiv_version","alias_value":"1310.0586v1","created_at":"2026-05-18T02:42:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1310.0586","created_at":"2026-05-18T02:42:14Z"},{"alias_kind":"pith_short_12","alias_value":"KWB2H7G4BFTK","created_at":"2026-05-18T12:27:51Z"},{"alias_kind":"pith_short_16","alias_value":"KWB2H7G4BFTKER7V","created_at":"2026-05-18T12:27:51Z"},{"alias_kind":"pith_short_8","alias_value":"KWB2H7G4","created_at":"2026-05-18T12:27:51Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:KWB2H7G4BFTKER7VKQ2GJBBUPE","target":"record","payload":{"canonical_record":{"source":{"id":"1310.0586","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SY","submitted_at":"2013-10-02T06:35:43Z","cross_cats_sorted":["math.OC"],"title_canon_sha256":"1ca6b8be96b250709379b3988a6fc84a87fa94f729697c7032a0ec3cdfe7dd3c","abstract_canon_sha256":"7ac98c8e3b845e31701d9ad41c736fe731ca4571d595813a3f1ce0fda6b84501"},"schema_version":"1.0"},"canonical_sha256":"5583a3fcdc0966a247f5543464843479046596dabaf9bcc192858972f2796d19","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:42:14.860679Z","signature_b64":"iuR2MKjsseQhERRo447ITZ3xRx7/QtxceHcpQHHbexslWZTUzIbs4Vf2jbAzoZGsWRkVehTUiE9PuW9wcNg/Bg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5583a3fcdc0966a247f5543464843479046596dabaf9bcc192858972f2796d19","last_reissued_at":"2026-05-18T02:42:14.859926Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:42:14.859926Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1310.0586","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":"2026-05-18T02:42:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HvGYDztatVA/Ah9Ef9hkhwfxeLBuzB+ttqrrwFhXXBCwxE1dy1zQHXBT4N7oE++9DWZo0uRORaWv6h78OCyJCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T19:27:59.796431Z"},"content_sha256":"fc165d6403181e3093a7d05decdd2d74244fcf276cbf4bfb1ffee33f0f1d19d8","schema_version":"1.0","event_id":"sha256:fc165d6403181e3093a7d05decdd2d74244fcf276cbf4bfb1ffee33f0f1d19d8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:KWB2H7G4BFTKER7VKQ2GJBBUPE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Real-time Optimization and Adaptation of the Crosswind Flight of Tethered Wings for Airborne Wind Energy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.OC"],"primary_cat":"cs.SY","authors_text":"Aldo U. Zgraggen, Lorenzo Fagiano, Manfred Morari","submitted_at":"2013-10-02T06:35:43Z","abstract_excerpt":"Airborne wind energy systems aim to generate renewable energy by means of the aerodynamic lift produced by a wing tethered to the ground and controlled to fly crosswind paths. The problem of maximizing the average power developed by the generator, in presence of limited information on wind speed and direction, is considered. At constant tether speed operation, the power is related to the traction force generated by the wing. First, a study of the traction force is presented for a general path parametrization. In particular, the sensitivity of the traction force on the path parameters is analyz"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1310.0586","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":"2026-05-18T02:42:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UG55UNx6JeknQpp5sdIcuGcPRbIkeTMgblWNVy50+oA2suxY1LbH5piOGueCR/NEh25xZAKtm8uSlDxja/ZRCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T19:27:59.797180Z"},"content_sha256":"8915f7478a2fc3e77803d8e81b2bec15923b914303e4e6af2de649f2d40a63be","schema_version":"1.0","event_id":"sha256:8915f7478a2fc3e77803d8e81b2bec15923b914303e4e6af2de649f2d40a63be"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KWB2H7G4BFTKER7VKQ2GJBBUPE/bundle.json","state_url":"https://pith.science/pith/KWB2H7G4BFTKER7VKQ2GJBBUPE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KWB2H7G4BFTKER7VKQ2GJBBUPE/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":"2026-06-08T19:27:59Z","links":{"resolver":"https://pith.science/pith/KWB2H7G4BFTKER7VKQ2GJBBUPE","bundle":"https://pith.science/pith/KWB2H7G4BFTKER7VKQ2GJBBUPE/bundle.json","state":"https://pith.science/pith/KWB2H7G4BFTKER7VKQ2GJBBUPE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KWB2H7G4BFTKER7VKQ2GJBBUPE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:KWB2H7G4BFTKER7VKQ2GJBBUPE","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":"7ac98c8e3b845e31701d9ad41c736fe731ca4571d595813a3f1ce0fda6b84501","cross_cats_sorted":["math.OC"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SY","submitted_at":"2013-10-02T06:35:43Z","title_canon_sha256":"1ca6b8be96b250709379b3988a6fc84a87fa94f729697c7032a0ec3cdfe7dd3c"},"schema_version":"1.0","source":{"id":"1310.0586","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1310.0586","created_at":"2026-05-18T02:42:14Z"},{"alias_kind":"arxiv_version","alias_value":"1310.0586v1","created_at":"2026-05-18T02:42:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1310.0586","created_at":"2026-05-18T02:42:14Z"},{"alias_kind":"pith_short_12","alias_value":"KWB2H7G4BFTK","created_at":"2026-05-18T12:27:51Z"},{"alias_kind":"pith_short_16","alias_value":"KWB2H7G4BFTKER7V","created_at":"2026-05-18T12:27:51Z"},{"alias_kind":"pith_short_8","alias_value":"KWB2H7G4","created_at":"2026-05-18T12:27:51Z"}],"graph_snapshots":[{"event_id":"sha256:8915f7478a2fc3e77803d8e81b2bec15923b914303e4e6af2de649f2d40a63be","target":"graph","created_at":"2026-05-18T02:42:14Z","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":"Airborne wind energy systems aim to generate renewable energy by means of the aerodynamic lift produced by a wing tethered to the ground and controlled to fly crosswind paths. The problem of maximizing the average power developed by the generator, in presence of limited information on wind speed and direction, is considered. At constant tether speed operation, the power is related to the traction force generated by the wing. First, a study of the traction force is presented for a general path parametrization. In particular, the sensitivity of the traction force on the path parameters is analyz","authors_text":"Aldo U. Zgraggen, Lorenzo Fagiano, Manfred Morari","cross_cats":["math.OC"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SY","submitted_at":"2013-10-02T06:35:43Z","title":"Real-time Optimization and Adaptation of the Crosswind Flight of Tethered Wings for Airborne Wind Energy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1310.0586","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:fc165d6403181e3093a7d05decdd2d74244fcf276cbf4bfb1ffee33f0f1d19d8","target":"record","created_at":"2026-05-18T02:42:14Z","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":"7ac98c8e3b845e31701d9ad41c736fe731ca4571d595813a3f1ce0fda6b84501","cross_cats_sorted":["math.OC"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SY","submitted_at":"2013-10-02T06:35:43Z","title_canon_sha256":"1ca6b8be96b250709379b3988a6fc84a87fa94f729697c7032a0ec3cdfe7dd3c"},"schema_version":"1.0","source":{"id":"1310.0586","kind":"arxiv","version":1}},"canonical_sha256":"5583a3fcdc0966a247f5543464843479046596dabaf9bcc192858972f2796d19","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5583a3fcdc0966a247f5543464843479046596dabaf9bcc192858972f2796d19","first_computed_at":"2026-05-18T02:42:14.859926Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:42:14.859926Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"iuR2MKjsseQhERRo447ITZ3xRx7/QtxceHcpQHHbexslWZTUzIbs4Vf2jbAzoZGsWRkVehTUiE9PuW9wcNg/Bg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:42:14.860679Z","signed_message":"canonical_sha256_bytes"},"source_id":"1310.0586","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fc165d6403181e3093a7d05decdd2d74244fcf276cbf4bfb1ffee33f0f1d19d8","sha256:8915f7478a2fc3e77803d8e81b2bec15923b914303e4e6af2de649f2d40a63be"],"state_sha256":"abdeca057add36ff33c27f13da7f1d395355069bba43dfcfc8b7a2f297c92f72"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ATddoXfhSj9LCgQWRo6z3gmvJl0mpPvU59I7DE/pCGb0/QuCdNRBxxJbzuQ2ZVRklDQXbR6niuxBeiuck342CQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-08T19:27:59.807219Z","bundle_sha256":"007f1062aa37b50637a5d613326b405ed9f32cfc5e8c56c863358c91c394514b"}}