{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:6Z4T4AWP7FBV47RZT4UTPT2PXE","short_pith_number":"pith:6Z4T4AWP","canonical_record":{"source":{"id":"2102.05919","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2021-02-11T10:08:44Z","cross_cats_sorted":["cs.AI"],"title_canon_sha256":"1b577c4fdce223444257bbdd602661ad9cd50837eb79dcc2f41c7c171925c326","abstract_canon_sha256":"977314e0dd95b77e02ddde2b94587fa6fa662ab17884486f893bf3815a555c6b"},"schema_version":"1.0"},"canonical_sha256":"f6793e02cff9435e7e399f2937cf4fb91de65c066ddf5abe4c81855a390d5ac3","source":{"kind":"arxiv","id":"2102.05919","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2102.05919","created_at":"2026-07-05T02:36:48Z"},{"alias_kind":"arxiv_version","alias_value":"2102.05919v2","created_at":"2026-07-05T02:36:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2102.05919","created_at":"2026-07-05T02:36:48Z"},{"alias_kind":"pith_short_12","alias_value":"6Z4T4AWP7FBV","created_at":"2026-07-05T02:36:48Z"},{"alias_kind":"pith_short_16","alias_value":"6Z4T4AWP7FBV47RZ","created_at":"2026-07-05T02:36:48Z"},{"alias_kind":"pith_short_8","alias_value":"6Z4T4AWP","created_at":"2026-07-05T02:36:48Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:6Z4T4AWP7FBV47RZT4UTPT2PXE","target":"record","payload":{"canonical_record":{"source":{"id":"2102.05919","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2021-02-11T10:08:44Z","cross_cats_sorted":["cs.AI"],"title_canon_sha256":"1b577c4fdce223444257bbdd602661ad9cd50837eb79dcc2f41c7c171925c326","abstract_canon_sha256":"977314e0dd95b77e02ddde2b94587fa6fa662ab17884486f893bf3815a555c6b"},"schema_version":"1.0"},"canonical_sha256":"f6793e02cff9435e7e399f2937cf4fb91de65c066ddf5abe4c81855a390d5ac3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:36:48.534822Z","signature_b64":"TQSASWKfm2by7I3lOvxpo8nNNj9ssyhBC4cpH4F3xpzKXKc0Mgmh5Ds/KSUL+dLtLfJFiKURJzqn5PaPRj2bCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f6793e02cff9435e7e399f2937cf4fb91de65c066ddf5abe4c81855a390d5ac3","last_reissued_at":"2026-07-05T02:36:48.533382Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:36:48.533382Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2102.05919","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":"2026-07-05T02:36:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TKZNAVfGfqtexiozauvjSJ5YGq8OUUuySFua+/1IZsTO6UzVo7Yp2wN7f6uO7+UWEsS++2MM2823WPwmtZr1BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-31T13:26:56.602113Z"},"content_sha256":"e25233d6ee70f9aed8e0d066743ccedcb9d0aa66cf60632478fe2e7cb313a888","schema_version":"1.0","event_id":"sha256:e25233d6ee70f9aed8e0d066743ccedcb9d0aa66cf60632478fe2e7cb313a888"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:6Z4T4AWP7FBV47RZT4UTPT2PXE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Focusing on the Hybrid Quantum Computing -- Tabu Search Algorithm: new results on the Asymmetric Salesman Problem","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.AI"],"primary_cat":"quant-ph","authors_text":"Aitor Moreno-Fernandez-de-Leceta, Eneko Osaba, Esther Villar-Rodriguez, Izaskun Oregi","submitted_at":"2021-02-11T10:08:44Z","abstract_excerpt":"Quantum Computing is an emerging paradigm which is gathering a lot of popularity in the current scientific and technological community. Widely conceived as the next frontier of computation, Quantum Computing is still at the dawn of its development. Thus, current solving systems suffer from significant limitations in terms of performance and capabilities. Some interesting approaches have been devised by researchers and practitioners in order to overcome these barriers, being quantum-classical hybrid algorithms one of the most often used solving schemes. The main goal of this paper is to extend "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2102.05919","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/2102.05919/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":"2026-07-05T02:36:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oQTvMlrczZB2vr8TUPz2ldQuqCrZaSqllOoGS5jUYWNXfzSE0OcwBvZupPY8KzGFQMvuSdhkv/KKgmLA51xLDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-31T13:26:56.602646Z"},"content_sha256":"c75f4626b0efeabb5cb784b75421814e80cc5b799ea7f7b6f9e0d90c1aa7d5b8","schema_version":"1.0","event_id":"sha256:c75f4626b0efeabb5cb784b75421814e80cc5b799ea7f7b6f9e0d90c1aa7d5b8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6Z4T4AWP7FBV47RZT4UTPT2PXE/bundle.json","state_url":"https://pith.science/pith/6Z4T4AWP7FBV47RZT4UTPT2PXE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6Z4T4AWP7FBV47RZT4UTPT2PXE/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":"2026-07-31T13:26:56Z","links":{"resolver":"https://pith.science/pith/6Z4T4AWP7FBV47RZT4UTPT2PXE","bundle":"https://pith.science/pith/6Z4T4AWP7FBV47RZT4UTPT2PXE/bundle.json","state":"https://pith.science/pith/6Z4T4AWP7FBV47RZT4UTPT2PXE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6Z4T4AWP7FBV47RZT4UTPT2PXE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:6Z4T4AWP7FBV47RZT4UTPT2PXE","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":"977314e0dd95b77e02ddde2b94587fa6fa662ab17884486f893bf3815a555c6b","cross_cats_sorted":["cs.AI"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2021-02-11T10:08:44Z","title_canon_sha256":"1b577c4fdce223444257bbdd602661ad9cd50837eb79dcc2f41c7c171925c326"},"schema_version":"1.0","source":{"id":"2102.05919","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2102.05919","created_at":"2026-07-05T02:36:48Z"},{"alias_kind":"arxiv_version","alias_value":"2102.05919v2","created_at":"2026-07-05T02:36:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2102.05919","created_at":"2026-07-05T02:36:48Z"},{"alias_kind":"pith_short_12","alias_value":"6Z4T4AWP7FBV","created_at":"2026-07-05T02:36:48Z"},{"alias_kind":"pith_short_16","alias_value":"6Z4T4AWP7FBV47RZ","created_at":"2026-07-05T02:36:48Z"},{"alias_kind":"pith_short_8","alias_value":"6Z4T4AWP","created_at":"2026-07-05T02:36:48Z"}],"graph_snapshots":[{"event_id":"sha256:c75f4626b0efeabb5cb784b75421814e80cc5b799ea7f7b6f9e0d90c1aa7d5b8","target":"graph","created_at":"2026-07-05T02:36:48Z","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/2102.05919/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Quantum Computing is an emerging paradigm which is gathering a lot of popularity in the current scientific and technological community. Widely conceived as the next frontier of computation, Quantum Computing is still at the dawn of its development. Thus, current solving systems suffer from significant limitations in terms of performance and capabilities. Some interesting approaches have been devised by researchers and practitioners in order to overcome these barriers, being quantum-classical hybrid algorithms one of the most often used solving schemes. The main goal of this paper is to extend ","authors_text":"Aitor Moreno-Fernandez-de-Leceta, Eneko Osaba, Esther Villar-Rodriguez, Izaskun Oregi","cross_cats":["cs.AI"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2021-02-11T10:08:44Z","title":"Focusing on the Hybrid Quantum Computing -- Tabu Search Algorithm: new results on the Asymmetric Salesman Problem"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2102.05919","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:e25233d6ee70f9aed8e0d066743ccedcb9d0aa66cf60632478fe2e7cb313a888","target":"record","created_at":"2026-07-05T02:36:48Z","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":"977314e0dd95b77e02ddde2b94587fa6fa662ab17884486f893bf3815a555c6b","cross_cats_sorted":["cs.AI"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2021-02-11T10:08:44Z","title_canon_sha256":"1b577c4fdce223444257bbdd602661ad9cd50837eb79dcc2f41c7c171925c326"},"schema_version":"1.0","source":{"id":"2102.05919","kind":"arxiv","version":2}},"canonical_sha256":"f6793e02cff9435e7e399f2937cf4fb91de65c066ddf5abe4c81855a390d5ac3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f6793e02cff9435e7e399f2937cf4fb91de65c066ddf5abe4c81855a390d5ac3","first_computed_at":"2026-07-05T02:36:48.533382Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:36:48.533382Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"TQSASWKfm2by7I3lOvxpo8nNNj9ssyhBC4cpH4F3xpzKXKc0Mgmh5Ds/KSUL+dLtLfJFiKURJzqn5PaPRj2bCw==","signature_status":"signed_v1","signed_at":"2026-07-05T02:36:48.534822Z","signed_message":"canonical_sha256_bytes"},"source_id":"2102.05919","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e25233d6ee70f9aed8e0d066743ccedcb9d0aa66cf60632478fe2e7cb313a888","sha256:c75f4626b0efeabb5cb784b75421814e80cc5b799ea7f7b6f9e0d90c1aa7d5b8"],"state_sha256":"389b9956b67e8aa67094c151ae0e3bff6aedc40224adf5fe1252d7f5cf1991c3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"osOscKb59Z7ZbTx8gcPeLiBe2zqk69KXg8mxx4fjrGESe0Qs5OVILcFw7PvYVfbk5kCjsYp4JNxmGsPPt1wOBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-31T13:26:56.608690Z","bundle_sha256":"f32bb35338f5409a733d39b011a182ce4c110f6267f552556025fd51b6ca2f5c"}}