{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:WPZYW6MTTAC354GNULXGGF7DRX","short_pith_number":"pith:WPZYW6MT","canonical_record":{"source":{"id":"2005.06787","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2020-05-14T07:57:38Z","cross_cats_sorted":[],"title_canon_sha256":"c8f325017b116e3ecee5ca9a01f2fa7dccf2600bee58b7748f888dc0840dc8ad","abstract_canon_sha256":"9c20115c262a21b5ea44b097749e7b27770af995c83ff54df27b4b9ebb20c414"},"schema_version":"1.0"},"canonical_sha256":"b3f38b79939805bef0cda2ee6317e38dd678cc855b05d2d9fd64c43d65cbe955","source":{"kind":"arxiv","id":"2005.06787","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2005.06787","created_at":"2026-07-05T01:02:50Z"},{"alias_kind":"arxiv_version","alias_value":"2005.06787v1","created_at":"2026-07-05T01:02:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2005.06787","created_at":"2026-07-05T01:02:50Z"},{"alias_kind":"pith_short_12","alias_value":"WPZYW6MTTAC3","created_at":"2026-07-05T01:02:50Z"},{"alias_kind":"pith_short_16","alias_value":"WPZYW6MTTAC354GN","created_at":"2026-07-05T01:02:50Z"},{"alias_kind":"pith_short_8","alias_value":"WPZYW6MT","created_at":"2026-07-05T01:02:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:WPZYW6MTTAC354GNULXGGF7DRX","target":"record","payload":{"canonical_record":{"source":{"id":"2005.06787","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2020-05-14T07:57:38Z","cross_cats_sorted":[],"title_canon_sha256":"c8f325017b116e3ecee5ca9a01f2fa7dccf2600bee58b7748f888dc0840dc8ad","abstract_canon_sha256":"9c20115c262a21b5ea44b097749e7b27770af995c83ff54df27b4b9ebb20c414"},"schema_version":"1.0"},"canonical_sha256":"b3f38b79939805bef0cda2ee6317e38dd678cc855b05d2d9fd64c43d65cbe955","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:02:50.477454Z","signature_b64":"XWW1LcUFxSHSNlG5k/SF7ZdT3J+YmguAVROv2B7+0y2tzSL4FNfqa3XvzaM1DRfMqZf2t2STqbPrGyuDwIYNBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b3f38b79939805bef0cda2ee6317e38dd678cc855b05d2d9fd64c43d65cbe955","last_reissued_at":"2026-07-05T01:02:50.476977Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:02:50.476977Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2005.06787","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":"2026-07-05T01:02:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LJtKJ1Wq9DQOa8KemsbtvFdVeTUt1rpjcwlqnYvIGBJ9Lui+k1MdJSJBbq4wGkG3vsjE8PPlU/y0A56ze8H8DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T14:58:10.941825Z"},"content_sha256":"7d3ac806c32e65585ffe253259293844856289e8a125d891130ad4f9543c399f","schema_version":"1.0","event_id":"sha256:7d3ac806c32e65585ffe253259293844856289e8a125d891130ad4f9543c399f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:WPZYW6MTTAC354GNULXGGF7DRX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Classical Simulation of Quantum Supremacy Circuits","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Bo Yuan, Cupjin Huang, Fang Zhang, Haihong Xu, Huanjun Yu, Jianxin Chen, Junjie Cai, Junyin Wu, Mario Szegedy, Michael Newman, Xun Gao, Yaoyun Shi, Zhengxiong Tian","submitted_at":"2020-05-14T07:57:38Z","abstract_excerpt":"It is believed that random quantum circuits are difficult to simulate classically. These have been used to demonstrate quantum supremacy: the execution of a computational task on a quantum computer that is infeasible for any classical computer. The task underlying the assertion of quantum supremacy by Arute et al. (Nature, 574, 505--510 (2019)) was initially estimated to require Summit, the world's most powerful supercomputer today, approximately 10,000 years. The same task was performed on the Sycamore quantum processor in only 200 seconds.\n  In this work, we present a tensor network-based cl"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2005.06787","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/2005.06787/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":"2026-07-05T01:02:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ygqGc0dN+hqBwuUrNs67+PrZVcvHxi9axODnuH+kH2u6DRdEnc64AN0CksCFkl4z1Slsg1R3rWE/HvLxnhZjAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T14:58:10.942223Z"},"content_sha256":"59d0c24c5858c79cfa5fab068f0ec51f034e29602050cd8fa2b570078e77e554","schema_version":"1.0","event_id":"sha256:59d0c24c5858c79cfa5fab068f0ec51f034e29602050cd8fa2b570078e77e554"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WPZYW6MTTAC354GNULXGGF7DRX/bundle.json","state_url":"https://pith.science/pith/WPZYW6MTTAC354GNULXGGF7DRX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WPZYW6MTTAC354GNULXGGF7DRX/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":"2026-08-05T14:58:10Z","links":{"resolver":"https://pith.science/pith/WPZYW6MTTAC354GNULXGGF7DRX","bundle":"https://pith.science/pith/WPZYW6MTTAC354GNULXGGF7DRX/bundle.json","state":"https://pith.science/pith/WPZYW6MTTAC354GNULXGGF7DRX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WPZYW6MTTAC354GNULXGGF7DRX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:WPZYW6MTTAC354GNULXGGF7DRX","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":"9c20115c262a21b5ea44b097749e7b27770af995c83ff54df27b4b9ebb20c414","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2020-05-14T07:57:38Z","title_canon_sha256":"c8f325017b116e3ecee5ca9a01f2fa7dccf2600bee58b7748f888dc0840dc8ad"},"schema_version":"1.0","source":{"id":"2005.06787","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2005.06787","created_at":"2026-07-05T01:02:50Z"},{"alias_kind":"arxiv_version","alias_value":"2005.06787v1","created_at":"2026-07-05T01:02:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2005.06787","created_at":"2026-07-05T01:02:50Z"},{"alias_kind":"pith_short_12","alias_value":"WPZYW6MTTAC3","created_at":"2026-07-05T01:02:50Z"},{"alias_kind":"pith_short_16","alias_value":"WPZYW6MTTAC354GN","created_at":"2026-07-05T01:02:50Z"},{"alias_kind":"pith_short_8","alias_value":"WPZYW6MT","created_at":"2026-07-05T01:02:50Z"}],"graph_snapshots":[{"event_id":"sha256:59d0c24c5858c79cfa5fab068f0ec51f034e29602050cd8fa2b570078e77e554","target":"graph","created_at":"2026-07-05T01:02:50Z","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/2005.06787/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"It is believed that random quantum circuits are difficult to simulate classically. These have been used to demonstrate quantum supremacy: the execution of a computational task on a quantum computer that is infeasible for any classical computer. The task underlying the assertion of quantum supremacy by Arute et al. (Nature, 574, 505--510 (2019)) was initially estimated to require Summit, the world's most powerful supercomputer today, approximately 10,000 years. The same task was performed on the Sycamore quantum processor in only 200 seconds.\n  In this work, we present a tensor network-based cl","authors_text":"Bo Yuan, Cupjin Huang, Fang Zhang, Haihong Xu, Huanjun Yu, Jianxin Chen, Junjie Cai, Junyin Wu, Mario Szegedy, Michael Newman, Xun Gao, Yaoyun Shi, Zhengxiong Tian","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2020-05-14T07:57:38Z","title":"Classical Simulation of Quantum Supremacy Circuits"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2005.06787","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":"sha256:7d3ac806c32e65585ffe253259293844856289e8a125d891130ad4f9543c399f","target":"record","created_at":"2026-07-05T01:02:50Z","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":"9c20115c262a21b5ea44b097749e7b27770af995c83ff54df27b4b9ebb20c414","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2020-05-14T07:57:38Z","title_canon_sha256":"c8f325017b116e3ecee5ca9a01f2fa7dccf2600bee58b7748f888dc0840dc8ad"},"schema_version":"1.0","source":{"id":"2005.06787","kind":"arxiv","version":1}},"canonical_sha256":"b3f38b79939805bef0cda2ee6317e38dd678cc855b05d2d9fd64c43d65cbe955","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b3f38b79939805bef0cda2ee6317e38dd678cc855b05d2d9fd64c43d65cbe955","first_computed_at":"2026-07-05T01:02:50.476977Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:02:50.476977Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"XWW1LcUFxSHSNlG5k/SF7ZdT3J+YmguAVROv2B7+0y2tzSL4FNfqa3XvzaM1DRfMqZf2t2STqbPrGyuDwIYNBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T01:02:50.477454Z","signed_message":"canonical_sha256_bytes"},"source_id":"2005.06787","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7d3ac806c32e65585ffe253259293844856289e8a125d891130ad4f9543c399f","sha256:59d0c24c5858c79cfa5fab068f0ec51f034e29602050cd8fa2b570078e77e554"],"state_sha256":"38d136e2c2a5a4bd32887c66d50c728e40f73a6f8f3136b7c75f484657b0fab7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ok74ZI/Vf6pI7lwI8p+tG9ky9h5fBFP3ZUbQRnP1KxfIJTHJBQT4V9FitmolJwREosGj+ZGseZMgbU4lIIP4Ag==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T14:58:10.945048Z","bundle_sha256":"63a3dec11a2ef7a731618be322046d47e462f37fa9cadb405e03553fec584022"}}