{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:4Y5QJ2PKYQLMNVX33NNYJYYBHQ","short_pith_number":"pith:4Y5QJ2PK","canonical_record":{"source":{"id":"1006.5881","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2010-06-30T15:11:42Z","cross_cats_sorted":["cond-mat.other"],"title_canon_sha256":"a84e9cb5392e54fb81131e997b20e697bd2e275d7300889da168ad7b3b889b67","abstract_canon_sha256":"77fb2b730606a2f52175d3bfe666a9ed4098903957433f34acc43ca41d35b5ad"},"schema_version":"1.0"},"canonical_sha256":"e63b04e9eac416c6d6fbdb5b84e3013c2e947faf1f9afefa71a294b1f9df8d1d","source":{"kind":"arxiv","id":"1006.5881","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1006.5881","created_at":"2026-05-18T04:11:31Z"},{"alias_kind":"arxiv_version","alias_value":"1006.5881v2","created_at":"2026-05-18T04:11:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1006.5881","created_at":"2026-05-18T04:11:31Z"},{"alias_kind":"pith_short_12","alias_value":"4Y5QJ2PKYQLM","created_at":"2026-05-18T12:26:04Z"},{"alias_kind":"pith_short_16","alias_value":"4Y5QJ2PKYQLMNVX3","created_at":"2026-05-18T12:26:04Z"},{"alias_kind":"pith_short_8","alias_value":"4Y5QJ2PK","created_at":"2026-05-18T12:26:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:4Y5QJ2PKYQLMNVX33NNYJYYBHQ","target":"record","payload":{"canonical_record":{"source":{"id":"1006.5881","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2010-06-30T15:11:42Z","cross_cats_sorted":["cond-mat.other"],"title_canon_sha256":"a84e9cb5392e54fb81131e997b20e697bd2e275d7300889da168ad7b3b889b67","abstract_canon_sha256":"77fb2b730606a2f52175d3bfe666a9ed4098903957433f34acc43ca41d35b5ad"},"schema_version":"1.0"},"canonical_sha256":"e63b04e9eac416c6d6fbdb5b84e3013c2e947faf1f9afefa71a294b1f9df8d1d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:11:31.879964Z","signature_b64":"Vzi/0Q51BeouZ3w33QVFQUDYZsq7Z75Lg+ZD1+fOuKgYQCrXSmkG2fQ+L/MTpiHHC03GMwgAbqfu3twfV18IDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e63b04e9eac416c6d6fbdb5b84e3013c2e947faf1f9afefa71a294b1f9df8d1d","last_reissued_at":"2026-05-18T04:11:31.879398Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:11:31.879398Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1006.5881","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":"2026-05-18T04:11:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AadZ2QAXtE3sDZDJF8M9nVZz66txVNXa53feSQ2UsxB2LNscl6hty3mtKipROJNKDJ3VfLGS3VX2ycsEWxf1Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T08:56:05.902673Z"},"content_sha256":"2e64824e5c0a378895fd36f9e19dccb05edfb7e3afd45664c7ddb16430cd2548","schema_version":"1.0","event_id":"sha256:2e64824e5c0a378895fd36f9e19dccb05edfb7e3afd45664c7ddb16430cd2548"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:4Y5QJ2PKYQLMNVX33NNYJYYBHQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Matrix multiplication using quantum-dot cellular automata to implement conventional microelectronics","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.other"],"primary_cat":"cond-mat.mes-hall","authors_text":"Joshua D. Wood, P. Douglas Tougaw","submitted_at":"2010-06-30T15:11:42Z","abstract_excerpt":"Quantum-dot cellular automata (QCA) shows promise as a post silicon CMOS, low power computational technology. Nevertheless, to generalize QCA for next-generation digital devices, the ability to implement conventional programmable circuits based on NOR, AND, and OR gates is necessary. To this end, we devise a new QCA structure, the QCA matrix multiplier (MM), employing the standard Coulomb blocked, five quantum dot (QD) QCA cell and quasi-adiabatic switching for sequential data latching in the QCA cells. Our structure can multiply two N x M matrices, using one input and one bidirectional input/"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1006.5881","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":"2026-05-18T04:11:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0YY9Ns0Qw8AvOhPiXYx/zPOlpIILCoGTo3W3+Li7FIwytcJJSBOOmCOpSlipv1sBNMv5cE60dMHlKL5caLItCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T08:56:05.903018Z"},"content_sha256":"52a523669b08a73979b3c8bba984cb2c12225efd96fc9525a68cf0e32e66bf50","schema_version":"1.0","event_id":"sha256:52a523669b08a73979b3c8bba984cb2c12225efd96fc9525a68cf0e32e66bf50"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4Y5QJ2PKYQLMNVX33NNYJYYBHQ/bundle.json","state_url":"https://pith.science/pith/4Y5QJ2PKYQLMNVX33NNYJYYBHQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4Y5QJ2PKYQLMNVX33NNYJYYBHQ/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":"2026-06-27T08:56:05Z","links":{"resolver":"https://pith.science/pith/4Y5QJ2PKYQLMNVX33NNYJYYBHQ","bundle":"https://pith.science/pith/4Y5QJ2PKYQLMNVX33NNYJYYBHQ/bundle.json","state":"https://pith.science/pith/4Y5QJ2PKYQLMNVX33NNYJYYBHQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4Y5QJ2PKYQLMNVX33NNYJYYBHQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:4Y5QJ2PKYQLMNVX33NNYJYYBHQ","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":"77fb2b730606a2f52175d3bfe666a9ed4098903957433f34acc43ca41d35b5ad","cross_cats_sorted":["cond-mat.other"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2010-06-30T15:11:42Z","title_canon_sha256":"a84e9cb5392e54fb81131e997b20e697bd2e275d7300889da168ad7b3b889b67"},"schema_version":"1.0","source":{"id":"1006.5881","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1006.5881","created_at":"2026-05-18T04:11:31Z"},{"alias_kind":"arxiv_version","alias_value":"1006.5881v2","created_at":"2026-05-18T04:11:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1006.5881","created_at":"2026-05-18T04:11:31Z"},{"alias_kind":"pith_short_12","alias_value":"4Y5QJ2PKYQLM","created_at":"2026-05-18T12:26:04Z"},{"alias_kind":"pith_short_16","alias_value":"4Y5QJ2PKYQLMNVX3","created_at":"2026-05-18T12:26:04Z"},{"alias_kind":"pith_short_8","alias_value":"4Y5QJ2PK","created_at":"2026-05-18T12:26:04Z"}],"graph_snapshots":[{"event_id":"sha256:52a523669b08a73979b3c8bba984cb2c12225efd96fc9525a68cf0e32e66bf50","target":"graph","created_at":"2026-05-18T04:11:31Z","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":"Quantum-dot cellular automata (QCA) shows promise as a post silicon CMOS, low power computational technology. Nevertheless, to generalize QCA for next-generation digital devices, the ability to implement conventional programmable circuits based on NOR, AND, and OR gates is necessary. To this end, we devise a new QCA structure, the QCA matrix multiplier (MM), employing the standard Coulomb blocked, five quantum dot (QD) QCA cell and quasi-adiabatic switching for sequential data latching in the QCA cells. Our structure can multiply two N x M matrices, using one input and one bidirectional input/","authors_text":"Joshua D. Wood, P. Douglas Tougaw","cross_cats":["cond-mat.other"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2010-06-30T15:11:42Z","title":"Matrix multiplication using quantum-dot cellular automata to implement conventional microelectronics"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1006.5881","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":"sha256:2e64824e5c0a378895fd36f9e19dccb05edfb7e3afd45664c7ddb16430cd2548","target":"record","created_at":"2026-05-18T04:11:31Z","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":"77fb2b730606a2f52175d3bfe666a9ed4098903957433f34acc43ca41d35b5ad","cross_cats_sorted":["cond-mat.other"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2010-06-30T15:11:42Z","title_canon_sha256":"a84e9cb5392e54fb81131e997b20e697bd2e275d7300889da168ad7b3b889b67"},"schema_version":"1.0","source":{"id":"1006.5881","kind":"arxiv","version":2}},"canonical_sha256":"e63b04e9eac416c6d6fbdb5b84e3013c2e947faf1f9afefa71a294b1f9df8d1d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e63b04e9eac416c6d6fbdb5b84e3013c2e947faf1f9afefa71a294b1f9df8d1d","first_computed_at":"2026-05-18T04:11:31.879398Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:11:31.879398Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Vzi/0Q51BeouZ3w33QVFQUDYZsq7Z75Lg+ZD1+fOuKgYQCrXSmkG2fQ+L/MTpiHHC03GMwgAbqfu3twfV18IDA==","signature_status":"signed_v1","signed_at":"2026-05-18T04:11:31.879964Z","signed_message":"canonical_sha256_bytes"},"source_id":"1006.5881","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2e64824e5c0a378895fd36f9e19dccb05edfb7e3afd45664c7ddb16430cd2548","sha256:52a523669b08a73979b3c8bba984cb2c12225efd96fc9525a68cf0e32e66bf50"],"state_sha256":"a5b08acb30c47a7de0b469cea55a1f3882ba3df2436f8cbfd42223570ba39989"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4Xtsk4iE7Z8Qk4PXopQkv0X07uvx9FL1y+v16QpT3IS8d5mj5eBoNtvfUceTd43mQCNS+TBmBhMU/lswzIsPBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-27T08:56:05.904977Z","bundle_sha256":"c0e811b1992c3abcdade3bdbbda9c397003a75d52644ef70e119d3ada4781efb"}}