{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:GWIAOUNT5SFILS22QRBRTN5UYG","short_pith_number":"pith:GWIAOUNT","canonical_record":{"source":{"id":"2112.00727","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2021-12-01T18:59:59Z","cross_cats_sorted":[],"title_canon_sha256":"0ff8591edbd6000575396e12980c0fa04e27756be43507e78a5ce5807474713c","abstract_canon_sha256":"2b8fddf8224adf17422b8db9e7a7c234cc8609c91fb484d34327bccd95fec6c6"},"schema_version":"1.0"},"canonical_sha256":"35900751b3ec8a85cb5a844319b7b4c198f0db20639491b3430d0950c439073c","source":{"kind":"arxiv","id":"2112.00727","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2112.00727","created_at":"2026-07-05T03:36:49Z"},{"alias_kind":"arxiv_version","alias_value":"2112.00727v1","created_at":"2026-07-05T03:36:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2112.00727","created_at":"2026-07-05T03:36:49Z"},{"alias_kind":"pith_short_12","alias_value":"GWIAOUNT5SFI","created_at":"2026-07-05T03:36:49Z"},{"alias_kind":"pith_short_16","alias_value":"GWIAOUNT5SFILS22","created_at":"2026-07-05T03:36:49Z"},{"alias_kind":"pith_short_8","alias_value":"GWIAOUNT","created_at":"2026-07-05T03:36:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:GWIAOUNT5SFILS22QRBRTN5UYG","target":"record","payload":{"canonical_record":{"source":{"id":"2112.00727","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2021-12-01T18:59:59Z","cross_cats_sorted":[],"title_canon_sha256":"0ff8591edbd6000575396e12980c0fa04e27756be43507e78a5ce5807474713c","abstract_canon_sha256":"2b8fddf8224adf17422b8db9e7a7c234cc8609c91fb484d34327bccd95fec6c6"},"schema_version":"1.0"},"canonical_sha256":"35900751b3ec8a85cb5a844319b7b4c198f0db20639491b3430d0950c439073c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:36:49.770097Z","signature_b64":"2Qyw5iFQqkLcEeIP9EfM8AmzPE//LYyt3gHJ7WIpMuJ3R6HSzmcowlf2vn+rMGhu4r3rgb3n8VGpFnaBuPc1Dw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"35900751b3ec8a85cb5a844319b7b4c198f0db20639491b3430d0950c439073c","last_reissued_at":"2026-07-05T03:36:49.769691Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:36:49.769691Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2112.00727","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":"2026-07-05T03:36:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BQ6yEGixRWVaopXUSkszsYKExke56vjN2X3GKg4A62soTT9Pw77mlPrJNM8J4268EXaTVsZtqbL/oznnv0LHBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T09:34:28.335926Z"},"content_sha256":"bdde84834651b77b50277154a4949f246d6914e6a0b9fcafc9786f967f07bed0","schema_version":"1.0","event_id":"sha256:bdde84834651b77b50277154a4949f246d6914e6a0b9fcafc9786f967f07bed0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:GWIAOUNT5SFILS22QRBRTN5UYG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Inter-generational comparison of quantum annealers in solving hard scheduling problems","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Alexei Kondratyev, Bibek Pokharel, Davide Venturelli, Eleanor Rieffel, Elena Strbac, Emmanuel Papathanasiou, Krzysztof Osiewalski, P. Aaron Lott, Zoe Gonzalez Izquierdo","submitted_at":"2021-12-01T18:59:59Z","abstract_excerpt":"We compare the performance of four quantum annealers, the D-Wave Two, 2X, 2000Q, and Advantage in solving an identical ensemble of a parametrized family of scheduling problems. These problems are NP-complete and, in fact, equivalent to vertex coloring problems. They are also practically motivated and closely connected to planning problems from artificial intelligence. We examine factors contributing to the performance differences while separating the contributions from hardware upgrades, support for shorter anneal times, and possible optimization of ferromagnetic couplings. While shorter annea"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2112.00727","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2112.00727/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":"2026-07-05T03:36:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Da6um3HwGfOS3oIYbRAe7y7YhMQtxzaDZCnuW7yINN0MzWUvK5pBF/csfkXJfJ5WvuWm27cNdbPtvHn7nmOuDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T09:34:28.336416Z"},"content_sha256":"2b4f1b6593f667dc4485769e064574f8932d10be4edf4c80163e6c86a3d90462","schema_version":"1.0","event_id":"sha256:2b4f1b6593f667dc4485769e064574f8932d10be4edf4c80163e6c86a3d90462"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GWIAOUNT5SFILS22QRBRTN5UYG/bundle.json","state_url":"https://pith.science/pith/GWIAOUNT5SFILS22QRBRTN5UYG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GWIAOUNT5SFILS22QRBRTN5UYG/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":"2026-08-12T09:34:28Z","links":{"resolver":"https://pith.science/pith/GWIAOUNT5SFILS22QRBRTN5UYG","bundle":"https://pith.science/pith/GWIAOUNT5SFILS22QRBRTN5UYG/bundle.json","state":"https://pith.science/pith/GWIAOUNT5SFILS22QRBRTN5UYG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GWIAOUNT5SFILS22QRBRTN5UYG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:GWIAOUNT5SFILS22QRBRTN5UYG","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":"2b8fddf8224adf17422b8db9e7a7c234cc8609c91fb484d34327bccd95fec6c6","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2021-12-01T18:59:59Z","title_canon_sha256":"0ff8591edbd6000575396e12980c0fa04e27756be43507e78a5ce5807474713c"},"schema_version":"1.0","source":{"id":"2112.00727","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2112.00727","created_at":"2026-07-05T03:36:49Z"},{"alias_kind":"arxiv_version","alias_value":"2112.00727v1","created_at":"2026-07-05T03:36:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2112.00727","created_at":"2026-07-05T03:36:49Z"},{"alias_kind":"pith_short_12","alias_value":"GWIAOUNT5SFI","created_at":"2026-07-05T03:36:49Z"},{"alias_kind":"pith_short_16","alias_value":"GWIAOUNT5SFILS22","created_at":"2026-07-05T03:36:49Z"},{"alias_kind":"pith_short_8","alias_value":"GWIAOUNT","created_at":"2026-07-05T03:36:49Z"}],"graph_snapshots":[{"event_id":"sha256:2b4f1b6593f667dc4485769e064574f8932d10be4edf4c80163e6c86a3d90462","target":"graph","created_at":"2026-07-05T03:36:49Z","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/2112.00727/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We compare the performance of four quantum annealers, the D-Wave Two, 2X, 2000Q, and Advantage in solving an identical ensemble of a parametrized family of scheduling problems. These problems are NP-complete and, in fact, equivalent to vertex coloring problems. They are also practically motivated and closely connected to planning problems from artificial intelligence. We examine factors contributing to the performance differences while separating the contributions from hardware upgrades, support for shorter anneal times, and possible optimization of ferromagnetic couplings. While shorter annea","authors_text":"Alexei Kondratyev, Bibek Pokharel, Davide Venturelli, Eleanor Rieffel, Elena Strbac, Emmanuel Papathanasiou, Krzysztof Osiewalski, P. Aaron Lott, Zoe Gonzalez Izquierdo","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2021-12-01T18:59:59Z","title":"Inter-generational comparison of quantum annealers in solving hard scheduling problems"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2112.00727","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:bdde84834651b77b50277154a4949f246d6914e6a0b9fcafc9786f967f07bed0","target":"record","created_at":"2026-07-05T03:36:49Z","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":"2b8fddf8224adf17422b8db9e7a7c234cc8609c91fb484d34327bccd95fec6c6","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2021-12-01T18:59:59Z","title_canon_sha256":"0ff8591edbd6000575396e12980c0fa04e27756be43507e78a5ce5807474713c"},"schema_version":"1.0","source":{"id":"2112.00727","kind":"arxiv","version":1}},"canonical_sha256":"35900751b3ec8a85cb5a844319b7b4c198f0db20639491b3430d0950c439073c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"35900751b3ec8a85cb5a844319b7b4c198f0db20639491b3430d0950c439073c","first_computed_at":"2026-07-05T03:36:49.769691Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:36:49.769691Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"2Qyw5iFQqkLcEeIP9EfM8AmzPE//LYyt3gHJ7WIpMuJ3R6HSzmcowlf2vn+rMGhu4r3rgb3n8VGpFnaBuPc1Dw==","signature_status":"signed_v1","signed_at":"2026-07-05T03:36:49.770097Z","signed_message":"canonical_sha256_bytes"},"source_id":"2112.00727","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bdde84834651b77b50277154a4949f246d6914e6a0b9fcafc9786f967f07bed0","sha256:2b4f1b6593f667dc4485769e064574f8932d10be4edf4c80163e6c86a3d90462"],"state_sha256":"a90593351e8c04df73be9b0259a8234b85a7dcd043c889c50bd44308cc5662fb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yjlgad6ifB9PNKiyZnfY75qbaGco0BG/VCINQL2yohI7m+0bx3ZVHpNHS2UWKjbhXP/5H0moQvYUfu2ejxwLDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-12T09:34:28.340016Z","bundle_sha256":"e8f33982cca1855f87126ecf9348e24634f477b0ab0cf59d2634b2f1ea23a686"}}