{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:SLV7I4FLSGU6PHKZ4XE2ZOFWT5","short_pith_number":"pith:SLV7I4FL","canonical_record":{"source":{"id":"1602.07942","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-02-25T14:21:38Z","cross_cats_sorted":[],"title_canon_sha256":"e5412afafc032f967253d5c9165317e402dcc9c514f17fc6abe771d24ffcd2b9","abstract_canon_sha256":"8aded4d218e261dcd418e77b2818d5a9cfd4732070ce90aa2a30d8ff2662bfc5"},"schema_version":"1.0"},"canonical_sha256":"92ebf470ab91a9e79d59e5c9acb8b69f4a75db5097c8aaf96912958050a41ad5","source":{"kind":"arxiv","id":"1602.07942","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1602.07942","created_at":"2026-05-18T01:03:36Z"},{"alias_kind":"arxiv_version","alias_value":"1602.07942v2","created_at":"2026-05-18T01:03:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1602.07942","created_at":"2026-05-18T01:03:36Z"},{"alias_kind":"pith_short_12","alias_value":"SLV7I4FLSGU6","created_at":"2026-05-18T12:30:44Z"},{"alias_kind":"pith_short_16","alias_value":"SLV7I4FLSGU6PHKZ","created_at":"2026-05-18T12:30:44Z"},{"alias_kind":"pith_short_8","alias_value":"SLV7I4FL","created_at":"2026-05-18T12:30:44Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:SLV7I4FLSGU6PHKZ4XE2ZOFWT5","target":"record","payload":{"canonical_record":{"source":{"id":"1602.07942","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-02-25T14:21:38Z","cross_cats_sorted":[],"title_canon_sha256":"e5412afafc032f967253d5c9165317e402dcc9c514f17fc6abe771d24ffcd2b9","abstract_canon_sha256":"8aded4d218e261dcd418e77b2818d5a9cfd4732070ce90aa2a30d8ff2662bfc5"},"schema_version":"1.0"},"canonical_sha256":"92ebf470ab91a9e79d59e5c9acb8b69f4a75db5097c8aaf96912958050a41ad5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:03:36.601226Z","signature_b64":"2rAkqXAynwwwWz8FIcdZoewP2L2pOF7piD7g3ndgT8zdBRP6kxhFXxqIpzf7Ef9GiXjzhG4dNLGfSOvwk9S8Aw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"92ebf470ab91a9e79d59e5c9acb8b69f4a75db5097c8aaf96912958050a41ad5","last_reissued_at":"2026-05-18T01:03:36.600672Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:03:36.600672Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1602.07942","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":"2026-05-18T01:03:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LSMeBjJPCqfZjUVPpfXjqVaeSjDFKKDvXGZnvrUhnyQAoZ2XcFbJD9UeWc7JGpPFxbWTNCoLZhPSDFigWTWgDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T19:57:16.633340Z"},"content_sha256":"45c8cfe06e9a200aef2e8d731ee6f0b39505e668652d539b3c5f44b0db1fc5be","schema_version":"1.0","event_id":"sha256:45c8cfe06e9a200aef2e8d731ee6f0b39505e668652d539b3c5f44b0db1fc5be"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:SLV7I4FLSGU6PHKZ4XE2ZOFWT5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Driver Hamiltonians for constrained optimization in quantum annealing","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Itay Hen, Marcelo S. Sarandy","submitted_at":"2016-02-25T14:21:38Z","abstract_excerpt":"One of the current major challenges surrounding the use of quantum annealers for solving practical optimization problems is their inability to encode even moderately sized problems---the main reason for this being the rigid layout of their quantum bits as well as their sparse connectivity. In particular, the implementation of constraints has become a major bottleneck in the embedding of practical problems, because the latter is typically achieved by adding harmful penalty terms to the problem Hamiltonian --- a technique that often requires an `all-to-all' connectivity between the qubits. Recen"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1602.07942","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":"2026-05-18T01:03:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ebfMQWRsKeumbnK6dsqVf6R8HW/mFx08VtI9I4DF6in0Jrf6MrqepCkGbMPW1zYRpzpO8DbJCOVjY8XRvn4qCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T19:57:16.633992Z"},"content_sha256":"485cc8802f61e5a65e93bb6ab8c7adb5d502f048e39120f05697b8f4a20cdd2f","schema_version":"1.0","event_id":"sha256:485cc8802f61e5a65e93bb6ab8c7adb5d502f048e39120f05697b8f4a20cdd2f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SLV7I4FLSGU6PHKZ4XE2ZOFWT5/bundle.json","state_url":"https://pith.science/pith/SLV7I4FLSGU6PHKZ4XE2ZOFWT5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SLV7I4FLSGU6PHKZ4XE2ZOFWT5/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":"2026-06-06T19:57:16Z","links":{"resolver":"https://pith.science/pith/SLV7I4FLSGU6PHKZ4XE2ZOFWT5","bundle":"https://pith.science/pith/SLV7I4FLSGU6PHKZ4XE2ZOFWT5/bundle.json","state":"https://pith.science/pith/SLV7I4FLSGU6PHKZ4XE2ZOFWT5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SLV7I4FLSGU6PHKZ4XE2ZOFWT5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:SLV7I4FLSGU6PHKZ4XE2ZOFWT5","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":"8aded4d218e261dcd418e77b2818d5a9cfd4732070ce90aa2a30d8ff2662bfc5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-02-25T14:21:38Z","title_canon_sha256":"e5412afafc032f967253d5c9165317e402dcc9c514f17fc6abe771d24ffcd2b9"},"schema_version":"1.0","source":{"id":"1602.07942","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1602.07942","created_at":"2026-05-18T01:03:36Z"},{"alias_kind":"arxiv_version","alias_value":"1602.07942v2","created_at":"2026-05-18T01:03:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1602.07942","created_at":"2026-05-18T01:03:36Z"},{"alias_kind":"pith_short_12","alias_value":"SLV7I4FLSGU6","created_at":"2026-05-18T12:30:44Z"},{"alias_kind":"pith_short_16","alias_value":"SLV7I4FLSGU6PHKZ","created_at":"2026-05-18T12:30:44Z"},{"alias_kind":"pith_short_8","alias_value":"SLV7I4FL","created_at":"2026-05-18T12:30:44Z"}],"graph_snapshots":[{"event_id":"sha256:485cc8802f61e5a65e93bb6ab8c7adb5d502f048e39120f05697b8f4a20cdd2f","target":"graph","created_at":"2026-05-18T01:03:36Z","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":"One of the current major challenges surrounding the use of quantum annealers for solving practical optimization problems is their inability to encode even moderately sized problems---the main reason for this being the rigid layout of their quantum bits as well as their sparse connectivity. In particular, the implementation of constraints has become a major bottleneck in the embedding of practical problems, because the latter is typically achieved by adding harmful penalty terms to the problem Hamiltonian --- a technique that often requires an `all-to-all' connectivity between the qubits. Recen","authors_text":"Itay Hen, Marcelo S. Sarandy","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-02-25T14:21:38Z","title":"Driver Hamiltonians for constrained optimization in quantum annealing"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1602.07942","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":"sha256:45c8cfe06e9a200aef2e8d731ee6f0b39505e668652d539b3c5f44b0db1fc5be","target":"record","created_at":"2026-05-18T01:03:36Z","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":"8aded4d218e261dcd418e77b2818d5a9cfd4732070ce90aa2a30d8ff2662bfc5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-02-25T14:21:38Z","title_canon_sha256":"e5412afafc032f967253d5c9165317e402dcc9c514f17fc6abe771d24ffcd2b9"},"schema_version":"1.0","source":{"id":"1602.07942","kind":"arxiv","version":2}},"canonical_sha256":"92ebf470ab91a9e79d59e5c9acb8b69f4a75db5097c8aaf96912958050a41ad5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"92ebf470ab91a9e79d59e5c9acb8b69f4a75db5097c8aaf96912958050a41ad5","first_computed_at":"2026-05-18T01:03:36.600672Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:03:36.600672Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"2rAkqXAynwwwWz8FIcdZoewP2L2pOF7piD7g3ndgT8zdBRP6kxhFXxqIpzf7Ef9GiXjzhG4dNLGfSOvwk9S8Aw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:03:36.601226Z","signed_message":"canonical_sha256_bytes"},"source_id":"1602.07942","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:45c8cfe06e9a200aef2e8d731ee6f0b39505e668652d539b3c5f44b0db1fc5be","sha256:485cc8802f61e5a65e93bb6ab8c7adb5d502f048e39120f05697b8f4a20cdd2f"],"state_sha256":"d16856237e0b01860c150d968021567fc8631dfb77e12bafa2581cb514816f4b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"o/HX8F6Jlt3kgtn3eiZTknG796KdRZwRmeizDO1KMP+gcPWHmKSweA9+150Zv9zFsDv9fDgH5zi59jmc5hJVDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-06T19:57:16.637205Z","bundle_sha256":"80cfff56edc6f028a1c7854a563683737154c3e6652e84c5699bd72c3f7c5d0f"}}