{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:P7MNHH367PIZUHT35PUTBMNSGG","short_pith_number":"pith:P7MNHH36","canonical_record":{"source":{"id":"2311.01171","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-sa/4.0/","primary_cat":"cs.ET","submitted_at":"2023-11-02T12:09:20Z","cross_cats_sorted":["cs.AR"],"title_canon_sha256":"a9f5979ac433ee0104e367237d175e56ece072fd461c40d089417c268446aa55","abstract_canon_sha256":"d653c1d271786c65bc3065e1c30b49a18fd0022812444cb31eb0f51fe392ab66"},"schema_version":"1.0"},"canonical_sha256":"7fd8d39f7efbd19a1e7bebe930b1b231b1b577d3690016d93aa003b325dc1545","source":{"kind":"arxiv","id":"2311.01171","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2311.01171","created_at":"2026-07-05T09:23:45Z"},{"alias_kind":"arxiv_version","alias_value":"2311.01171v1","created_at":"2026-07-05T09:23:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2311.01171","created_at":"2026-07-05T09:23:45Z"},{"alias_kind":"pith_short_12","alias_value":"P7MNHH367PIZ","created_at":"2026-07-05T09:23:45Z"},{"alias_kind":"pith_short_16","alias_value":"P7MNHH367PIZUHT3","created_at":"2026-07-05T09:23:45Z"},{"alias_kind":"pith_short_8","alias_value":"P7MNHH36","created_at":"2026-07-05T09:23:45Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:P7MNHH367PIZUHT35PUTBMNSGG","target":"record","payload":{"canonical_record":{"source":{"id":"2311.01171","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-sa/4.0/","primary_cat":"cs.ET","submitted_at":"2023-11-02T12:09:20Z","cross_cats_sorted":["cs.AR"],"title_canon_sha256":"a9f5979ac433ee0104e367237d175e56ece072fd461c40d089417c268446aa55","abstract_canon_sha256":"d653c1d271786c65bc3065e1c30b49a18fd0022812444cb31eb0f51fe392ab66"},"schema_version":"1.0"},"canonical_sha256":"7fd8d39f7efbd19a1e7bebe930b1b231b1b577d3690016d93aa003b325dc1545","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T09:23:45.485882Z","signature_b64":"s9Lp2rhyNVz3jC0wVM+VIWZP3ncJrZ86Xm1HmRNcJWQ3XNHPWaKy/zl5JyS2BcuLIV8sRRaBSMDP0om8Tu/9AQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7fd8d39f7efbd19a1e7bebe930b1b231b1b577d3690016d93aa003b325dc1545","last_reissued_at":"2026-07-05T09:23:45.485440Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T09:23:45.485440Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2311.01171","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":"2026-07-05T09:23:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zjL21gtttYUMp7SBF5olYdVrTcmXQlN80lNTZuTLzMr5RSWzOHINurcHFn6aZ8TixrzL/gRt/nwWAdt03c1YAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T08:36:46.935932Z"},"content_sha256":"065192594d0f7d2b552ee6115ce76ffc6a0ef33e243ac8c9685dd8da2d521346","schema_version":"1.0","event_id":"sha256:065192594d0f7d2b552ee6115ce76ffc6a0ef33e243ac8c9685dd8da2d521346"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:P7MNHH367PIZUHT35PUTBMNSGG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Memristor-based hardware and algorithms for higher-order Hopfield optimization solver outperforming quadratic Ising machines","license":"http://creativecommons.org/licenses/by-sa/4.0/","headline":"","cross_cats":["cs.AR"],"primary_cat":"cs.ET","authors_text":"Adrien Renaudineau, Arne Heittmann, Dmitrii Dobrynin, Dmitri Strukov, George Hutchinson, John Paul Strachan, Mohammad Hizzani, Thomas Van Vaerenbergh, Tinish Bhattacharya","submitted_at":"2023-11-02T12:09:20Z","abstract_excerpt":"Ising solvers offer a promising physics-based approach to tackle the challenging class of combinatorial optimization problems. However, typical solvers operate in a quadratic energy space, having only pair-wise coupling elements which already dominate area and energy. We show that such quadratization can cause severe problems: increased dimensionality, a rugged search landscape, and misalignment with the original objective function. Here, we design and quantify a higher-order Hopfield optimization solver, with 28nm CMOS technology and memristive couplings for lower area and energy computations"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2311.01171","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/2311.01171/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":"2026-07-05T09:23:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZgzZsLH/JzMWUCvG01D2f+FlLUVqA44Ia6PtgKWQqVaRvEcxrdonLPBldKEGEUUdAg2CQtaxDn+pVP4TB42/Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T08:36:46.936432Z"},"content_sha256":"61e75cf81f17800538437d7aba543b7df691f4e2376b2ca21fbc9af04dfeb10e","schema_version":"1.0","event_id":"sha256:61e75cf81f17800538437d7aba543b7df691f4e2376b2ca21fbc9af04dfeb10e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/P7MNHH367PIZUHT35PUTBMNSGG/bundle.json","state_url":"https://pith.science/pith/P7MNHH367PIZUHT35PUTBMNSGG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/P7MNHH367PIZUHT35PUTBMNSGG/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":"2026-08-07T08:36:46Z","links":{"resolver":"https://pith.science/pith/P7MNHH367PIZUHT35PUTBMNSGG","bundle":"https://pith.science/pith/P7MNHH367PIZUHT35PUTBMNSGG/bundle.json","state":"https://pith.science/pith/P7MNHH367PIZUHT35PUTBMNSGG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/P7MNHH367PIZUHT35PUTBMNSGG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:P7MNHH367PIZUHT35PUTBMNSGG","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":"d653c1d271786c65bc3065e1c30b49a18fd0022812444cb31eb0f51fe392ab66","cross_cats_sorted":["cs.AR"],"license":"http://creativecommons.org/licenses/by-sa/4.0/","primary_cat":"cs.ET","submitted_at":"2023-11-02T12:09:20Z","title_canon_sha256":"a9f5979ac433ee0104e367237d175e56ece072fd461c40d089417c268446aa55"},"schema_version":"1.0","source":{"id":"2311.01171","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2311.01171","created_at":"2026-07-05T09:23:45Z"},{"alias_kind":"arxiv_version","alias_value":"2311.01171v1","created_at":"2026-07-05T09:23:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2311.01171","created_at":"2026-07-05T09:23:45Z"},{"alias_kind":"pith_short_12","alias_value":"P7MNHH367PIZ","created_at":"2026-07-05T09:23:45Z"},{"alias_kind":"pith_short_16","alias_value":"P7MNHH367PIZUHT3","created_at":"2026-07-05T09:23:45Z"},{"alias_kind":"pith_short_8","alias_value":"P7MNHH36","created_at":"2026-07-05T09:23:45Z"}],"graph_snapshots":[{"event_id":"sha256:61e75cf81f17800538437d7aba543b7df691f4e2376b2ca21fbc9af04dfeb10e","target":"graph","created_at":"2026-07-05T09:23:45Z","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/2311.01171/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Ising solvers offer a promising physics-based approach to tackle the challenging class of combinatorial optimization problems. However, typical solvers operate in a quadratic energy space, having only pair-wise coupling elements which already dominate area and energy. We show that such quadratization can cause severe problems: increased dimensionality, a rugged search landscape, and misalignment with the original objective function. Here, we design and quantify a higher-order Hopfield optimization solver, with 28nm CMOS technology and memristive couplings for lower area and energy computations","authors_text":"Adrien Renaudineau, Arne Heittmann, Dmitrii Dobrynin, Dmitri Strukov, George Hutchinson, John Paul Strachan, Mohammad Hizzani, Thomas Van Vaerenbergh, Tinish Bhattacharya","cross_cats":["cs.AR"],"headline":"","license":"http://creativecommons.org/licenses/by-sa/4.0/","primary_cat":"cs.ET","submitted_at":"2023-11-02T12:09:20Z","title":"Memristor-based hardware and algorithms for higher-order Hopfield optimization solver outperforming quadratic Ising machines"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2311.01171","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":"sha256:065192594d0f7d2b552ee6115ce76ffc6a0ef33e243ac8c9685dd8da2d521346","target":"record","created_at":"2026-07-05T09:23:45Z","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":"d653c1d271786c65bc3065e1c30b49a18fd0022812444cb31eb0f51fe392ab66","cross_cats_sorted":["cs.AR"],"license":"http://creativecommons.org/licenses/by-sa/4.0/","primary_cat":"cs.ET","submitted_at":"2023-11-02T12:09:20Z","title_canon_sha256":"a9f5979ac433ee0104e367237d175e56ece072fd461c40d089417c268446aa55"},"schema_version":"1.0","source":{"id":"2311.01171","kind":"arxiv","version":1}},"canonical_sha256":"7fd8d39f7efbd19a1e7bebe930b1b231b1b577d3690016d93aa003b325dc1545","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7fd8d39f7efbd19a1e7bebe930b1b231b1b577d3690016d93aa003b325dc1545","first_computed_at":"2026-07-05T09:23:45.485440Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T09:23:45.485440Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"s9Lp2rhyNVz3jC0wVM+VIWZP3ncJrZ86Xm1HmRNcJWQ3XNHPWaKy/zl5JyS2BcuLIV8sRRaBSMDP0om8Tu/9AQ==","signature_status":"signed_v1","signed_at":"2026-07-05T09:23:45.485882Z","signed_message":"canonical_sha256_bytes"},"source_id":"2311.01171","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:065192594d0f7d2b552ee6115ce76ffc6a0ef33e243ac8c9685dd8da2d521346","sha256:61e75cf81f17800538437d7aba543b7df691f4e2376b2ca21fbc9af04dfeb10e"],"state_sha256":"af80f37d11de031d0c11c9df3f4c7ee31ad31708ded291f4aacedf5f10154921"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9SgLRDDy1WzHgJRQVnQBYcU1oQvMyMwTDUkOukHFoONNZNCDg/W8Rvc4Os64vnGKDTFXlRKETGWKOa3NeKZ1Ag==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-07T08:36:46.940208Z","bundle_sha256":"5212a22d30401b97d53875f34701b18dcfb4e53c1ae14de15ece938b5a829be6"}}