{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:I22R7VV4ZYSGQA2M6UGQ7VYLXS","short_pith_number":"pith:I22R7VV4","canonical_record":{"source":{"id":"2504.15410","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-04-21T19:36:42Z","cross_cats_sorted":[],"title_canon_sha256":"e52b0c48e07dff2f02eae5bb6781652ffc364b6e387185e628497056020f9ce6","abstract_canon_sha256":"88b0359a86dabd8de996cb4d8d6fa1b7caf61de3947706dc91577b701f67a8c7"},"schema_version":"1.0"},"canonical_sha256":"46b51fd6bcce2468034cf50d0fd70bbc8f1a61075f09583dc174ac0ee22b975c","source":{"kind":"arxiv","id":"2504.15410","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2504.15410","created_at":"2026-06-30T02:16:50Z"},{"alias_kind":"arxiv_version","alias_value":"2504.15410v4","created_at":"2026-06-30T02:16:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2504.15410","created_at":"2026-06-30T02:16:50Z"},{"alias_kind":"pith_short_12","alias_value":"I22R7VV4ZYSG","created_at":"2026-06-30T02:16:50Z"},{"alias_kind":"pith_short_16","alias_value":"I22R7VV4ZYSGQA2M","created_at":"2026-06-30T02:16:50Z"},{"alias_kind":"pith_short_8","alias_value":"I22R7VV4","created_at":"2026-06-30T02:16:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:I22R7VV4ZYSGQA2M6UGQ7VYLXS","target":"record","payload":{"canonical_record":{"source":{"id":"2504.15410","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-04-21T19:36:42Z","cross_cats_sorted":[],"title_canon_sha256":"e52b0c48e07dff2f02eae5bb6781652ffc364b6e387185e628497056020f9ce6","abstract_canon_sha256":"88b0359a86dabd8de996cb4d8d6fa1b7caf61de3947706dc91577b701f67a8c7"},"schema_version":"1.0"},"canonical_sha256":"46b51fd6bcce2468034cf50d0fd70bbc8f1a61075f09583dc174ac0ee22b975c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-30T02:16:50.912297Z","signature_b64":"1W3bY+6ke+zBwBjM0HCPQyIzgq96uCUL0advfeT6q3RB3pssC/VkLbXBZqmURKXJIxQ/ggnPVOhQQlYhMH3gAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"46b51fd6bcce2468034cf50d0fd70bbc8f1a61075f09583dc174ac0ee22b975c","last_reissued_at":"2026-06-30T02:16:50.911511Z","signature_status":"signed_v1","first_computed_at":"2026-06-30T02:16:50.911511Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2504.15410","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":"2026-06-30T02:16:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rkdBcfD7cYdG+KZGl7nIA82O4KbfPD+Z1Bk9eU0Pst4HLX9KFNPvugb6O0f154glB6YR5krvKKXPH+t69sTwDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-04T10:16:10.436949Z"},"content_sha256":"9f77ded7cbb69e9cc73976d776f404eedadd5b318752775e163ba95490111dd4","schema_version":"1.0","event_id":"sha256:9f77ded7cbb69e9cc73976d776f404eedadd5b318752775e163ba95490111dd4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:I22R7VV4ZYSGQA2M6UGQ7VYLXS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Verifiable End-to-End Delegated Variational Quantum Algorithms","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Anna Pappa, Matteo Inajetovic, Petros Wallden","submitted_at":"2025-04-21T19:36:42Z","abstract_excerpt":"Variational quantum algorithms (VQAs) have emerged as promising candidates for solving complex optimization and machine learning tasks on near-term quantum hardware. However, executing quantum operations remains challenging for small-scale users because of several hardware constraints, making it desirable to delegate parts of the computation to more powerful quantum devices. In this work, we introduce a framework for delegated variational quantum algorithms (DVQAs), where a client with limited quantum capabilities delegates the execution of a VQA to a more powerful quantum server. In particula"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2504.15410","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2504.15410/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":"2026-06-30T02:16:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"x+qVb/Kti9DyMMU+5otti/dn0kCFKvjDbnNbMpUoAl7VKP/NZ/T1IAXTnym8AhKJQhU5S14CEYROyJv72wFrCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-04T10:16:10.437340Z"},"content_sha256":"bba5d0e126d9876586765c3167809e0c0a6efb4f04ff32c424f68089e75bbe67","schema_version":"1.0","event_id":"sha256:bba5d0e126d9876586765c3167809e0c0a6efb4f04ff32c424f68089e75bbe67"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/I22R7VV4ZYSGQA2M6UGQ7VYLXS/bundle.json","state_url":"https://pith.science/pith/I22R7VV4ZYSGQA2M6UGQ7VYLXS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/I22R7VV4ZYSGQA2M6UGQ7VYLXS/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":"2026-07-04T10:16:10Z","links":{"resolver":"https://pith.science/pith/I22R7VV4ZYSGQA2M6UGQ7VYLXS","bundle":"https://pith.science/pith/I22R7VV4ZYSGQA2M6UGQ7VYLXS/bundle.json","state":"https://pith.science/pith/I22R7VV4ZYSGQA2M6UGQ7VYLXS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/I22R7VV4ZYSGQA2M6UGQ7VYLXS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:I22R7VV4ZYSGQA2M6UGQ7VYLXS","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":"88b0359a86dabd8de996cb4d8d6fa1b7caf61de3947706dc91577b701f67a8c7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-04-21T19:36:42Z","title_canon_sha256":"e52b0c48e07dff2f02eae5bb6781652ffc364b6e387185e628497056020f9ce6"},"schema_version":"1.0","source":{"id":"2504.15410","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2504.15410","created_at":"2026-06-30T02:16:50Z"},{"alias_kind":"arxiv_version","alias_value":"2504.15410v4","created_at":"2026-06-30T02:16:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2504.15410","created_at":"2026-06-30T02:16:50Z"},{"alias_kind":"pith_short_12","alias_value":"I22R7VV4ZYSG","created_at":"2026-06-30T02:16:50Z"},{"alias_kind":"pith_short_16","alias_value":"I22R7VV4ZYSGQA2M","created_at":"2026-06-30T02:16:50Z"},{"alias_kind":"pith_short_8","alias_value":"I22R7VV4","created_at":"2026-06-30T02:16:50Z"}],"graph_snapshots":[{"event_id":"sha256:bba5d0e126d9876586765c3167809e0c0a6efb4f04ff32c424f68089e75bbe67","target":"graph","created_at":"2026-06-30T02:16:50Z","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/2504.15410/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Variational quantum algorithms (VQAs) have emerged as promising candidates for solving complex optimization and machine learning tasks on near-term quantum hardware. However, executing quantum operations remains challenging for small-scale users because of several hardware constraints, making it desirable to delegate parts of the computation to more powerful quantum devices. In this work, we introduce a framework for delegated variational quantum algorithms (DVQAs), where a client with limited quantum capabilities delegates the execution of a VQA to a more powerful quantum server. In particula","authors_text":"Anna Pappa, Matteo Inajetovic, Petros Wallden","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-04-21T19:36:42Z","title":"Verifiable End-to-End Delegated Variational Quantum Algorithms"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2504.15410","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":"sha256:9f77ded7cbb69e9cc73976d776f404eedadd5b318752775e163ba95490111dd4","target":"record","created_at":"2026-06-30T02:16:50Z","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":"88b0359a86dabd8de996cb4d8d6fa1b7caf61de3947706dc91577b701f67a8c7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-04-21T19:36:42Z","title_canon_sha256":"e52b0c48e07dff2f02eae5bb6781652ffc364b6e387185e628497056020f9ce6"},"schema_version":"1.0","source":{"id":"2504.15410","kind":"arxiv","version":4}},"canonical_sha256":"46b51fd6bcce2468034cf50d0fd70bbc8f1a61075f09583dc174ac0ee22b975c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"46b51fd6bcce2468034cf50d0fd70bbc8f1a61075f09583dc174ac0ee22b975c","first_computed_at":"2026-06-30T02:16:50.911511Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-30T02:16:50.911511Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1W3bY+6ke+zBwBjM0HCPQyIzgq96uCUL0advfeT6q3RB3pssC/VkLbXBZqmURKXJIxQ/ggnPVOhQQlYhMH3gAw==","signature_status":"signed_v1","signed_at":"2026-06-30T02:16:50.912297Z","signed_message":"canonical_sha256_bytes"},"source_id":"2504.15410","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9f77ded7cbb69e9cc73976d776f404eedadd5b318752775e163ba95490111dd4","sha256:bba5d0e126d9876586765c3167809e0c0a6efb4f04ff32c424f68089e75bbe67"],"state_sha256":"ab92296e264bb99a9cf85e36cc9c8907849604de5c24cde1c06f33669d944ce6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5s093szxTWdDhCXkQyf1uSK6FkkDD8B+88+4o9HunK/EtxXHmb763YgoMMASACtxARGdp5htP4CoPkLA+jxkCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-04T10:16:10.439381Z","bundle_sha256":"e93878b3b516e5b1f7b9f1531fc17434cc247adee7dc49a7da7e4ffd1260f320"}}