{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:3CK5U3XZ5K3X2KRKA25NDLFHXU","short_pith_number":"pith:3CK5U3XZ","canonical_record":{"source":{"id":"1212.2994","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-12-12T21:52:43Z","cross_cats_sorted":["cond-mat.supr-con"],"title_canon_sha256":"d534a7a513fcaf10c6fffc42ef78a8db835d71e658c439b316313d053f69aa5d","abstract_canon_sha256":"5afece0590b919339d40b56201f3bca60086a46121710f724b6cfc69f556cd20"},"schema_version":"1.0"},"canonical_sha256":"d895da6ef9eab77d2a2a06bad1aca7bd3e97d421450d78bcd437dc3291d4b809","source":{"kind":"arxiv","id":"1212.2994","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1212.2994","created_at":"2026-05-18T01:52:39Z"},{"alias_kind":"arxiv_version","alias_value":"1212.2994v1","created_at":"2026-05-18T01:52:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1212.2994","created_at":"2026-05-18T01:52:39Z"},{"alias_kind":"pith_short_12","alias_value":"3CK5U3XZ5K3X","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_16","alias_value":"3CK5U3XZ5K3X2KRK","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_8","alias_value":"3CK5U3XZ","created_at":"2026-05-18T12:26:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:3CK5U3XZ5K3X2KRKA25NDLFHXU","target":"record","payload":{"canonical_record":{"source":{"id":"1212.2994","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-12-12T21:52:43Z","cross_cats_sorted":["cond-mat.supr-con"],"title_canon_sha256":"d534a7a513fcaf10c6fffc42ef78a8db835d71e658c439b316313d053f69aa5d","abstract_canon_sha256":"5afece0590b919339d40b56201f3bca60086a46121710f724b6cfc69f556cd20"},"schema_version":"1.0"},"canonical_sha256":"d895da6ef9eab77d2a2a06bad1aca7bd3e97d421450d78bcd437dc3291d4b809","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:52:39.254284Z","signature_b64":"Z812/PDG4irKpcfDXewNWTMD3mlM0zkdfDsMsFoll0gf+Ky9xpjomiGD0O+kOH/22qIJ7wRu3nyhGsKxfGRTBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d895da6ef9eab77d2a2a06bad1aca7bd3e97d421450d78bcd437dc3291d4b809","last_reissued_at":"2026-05-18T01:52:39.253679Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:52:39.253679Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1212.2994","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":"2026-05-18T01:52:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"POhpVwUslLBW0SslADNSAZICiqdfGs50g0paUi7S8D/Hyx3s3Su/bGSPmtaEZKds14iLQF256QpYTBZmHZTuCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T04:08:27.667044Z"},"content_sha256":"d51ec35e670aae2aa70f33a57ee2f754a3318cb644d657d10275b050788ea874","schema_version":"1.0","event_id":"sha256:d51ec35e670aae2aa70f33a57ee2f754a3318cb644d657d10275b050788ea874"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:3CK5U3XZ5K3X2KRKA25NDLFHXU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"An 8-bit carry look-ahead adder with 150 ps latency and sub-microwatt power dissipation at 10 GHz","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.supr-con"],"primary_cat":"quant-ph","authors_text":"Anna Y. Herr, John X. Przybysz, Ofer Naaman, Oliver T. Oberg, Pavel Borodulin, Quentin P. Herr, Steven B. Shauck","submitted_at":"2012-12-12T21:52:43Z","abstract_excerpt":"Reciprocal Quantum Logic combines the speed and power-efficiency of single-flux quantum superconductor devices with design features that are similar to CMOS. We have demonstrated an 8-bit carry look-ahead adder in the technology using combinational gates with fanout of four and non-local interconnect. Measured power dissipation of the fully active circuit is only 510 nW at 6.2GHz. Latency is only 150 ps at a clock rate of 10GHz."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1212.2994","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":""},"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":"2026-05-18T01:52:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"h+qsOv5AZ0e+s9FtM/v2t0f9KE5CQ3BhLTsEoBRupzkWmyzAnzUjmBeeRfz0F1tQ95BBI9CHiUTZSawxWu8eBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T04:08:27.667455Z"},"content_sha256":"d81bcce1ce449718349059f85204a61db2f1a7aa02cd65b7aefa5f9ad8fc06b1","schema_version":"1.0","event_id":"sha256:d81bcce1ce449718349059f85204a61db2f1a7aa02cd65b7aefa5f9ad8fc06b1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3CK5U3XZ5K3X2KRKA25NDLFHXU/bundle.json","state_url":"https://pith.science/pith/3CK5U3XZ5K3X2KRKA25NDLFHXU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3CK5U3XZ5K3X2KRKA25NDLFHXU/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":"2026-05-27T04:08:27Z","links":{"resolver":"https://pith.science/pith/3CK5U3XZ5K3X2KRKA25NDLFHXU","bundle":"https://pith.science/pith/3CK5U3XZ5K3X2KRKA25NDLFHXU/bundle.json","state":"https://pith.science/pith/3CK5U3XZ5K3X2KRKA25NDLFHXU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3CK5U3XZ5K3X2KRKA25NDLFHXU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:3CK5U3XZ5K3X2KRKA25NDLFHXU","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":"5afece0590b919339d40b56201f3bca60086a46121710f724b6cfc69f556cd20","cross_cats_sorted":["cond-mat.supr-con"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-12-12T21:52:43Z","title_canon_sha256":"d534a7a513fcaf10c6fffc42ef78a8db835d71e658c439b316313d053f69aa5d"},"schema_version":"1.0","source":{"id":"1212.2994","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1212.2994","created_at":"2026-05-18T01:52:39Z"},{"alias_kind":"arxiv_version","alias_value":"1212.2994v1","created_at":"2026-05-18T01:52:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1212.2994","created_at":"2026-05-18T01:52:39Z"},{"alias_kind":"pith_short_12","alias_value":"3CK5U3XZ5K3X","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_16","alias_value":"3CK5U3XZ5K3X2KRK","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_8","alias_value":"3CK5U3XZ","created_at":"2026-05-18T12:26:50Z"}],"graph_snapshots":[{"event_id":"sha256:d81bcce1ce449718349059f85204a61db2f1a7aa02cd65b7aefa5f9ad8fc06b1","target":"graph","created_at":"2026-05-18T01:52:39Z","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":"Reciprocal Quantum Logic combines the speed and power-efficiency of single-flux quantum superconductor devices with design features that are similar to CMOS. We have demonstrated an 8-bit carry look-ahead adder in the technology using combinational gates with fanout of four and non-local interconnect. Measured power dissipation of the fully active circuit is only 510 nW at 6.2GHz. Latency is only 150 ps at a clock rate of 10GHz.","authors_text":"Anna Y. Herr, John X. Przybysz, Ofer Naaman, Oliver T. Oberg, Pavel Borodulin, Quentin P. Herr, Steven B. Shauck","cross_cats":["cond-mat.supr-con"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-12-12T21:52:43Z","title":"An 8-bit carry look-ahead adder with 150 ps latency and sub-microwatt power dissipation at 10 GHz"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1212.2994","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:d51ec35e670aae2aa70f33a57ee2f754a3318cb644d657d10275b050788ea874","target":"record","created_at":"2026-05-18T01:52:39Z","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":"5afece0590b919339d40b56201f3bca60086a46121710f724b6cfc69f556cd20","cross_cats_sorted":["cond-mat.supr-con"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-12-12T21:52:43Z","title_canon_sha256":"d534a7a513fcaf10c6fffc42ef78a8db835d71e658c439b316313d053f69aa5d"},"schema_version":"1.0","source":{"id":"1212.2994","kind":"arxiv","version":1}},"canonical_sha256":"d895da6ef9eab77d2a2a06bad1aca7bd3e97d421450d78bcd437dc3291d4b809","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d895da6ef9eab77d2a2a06bad1aca7bd3e97d421450d78bcd437dc3291d4b809","first_computed_at":"2026-05-18T01:52:39.253679Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:52:39.253679Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Z812/PDG4irKpcfDXewNWTMD3mlM0zkdfDsMsFoll0gf+Ky9xpjomiGD0O+kOH/22qIJ7wRu3nyhGsKxfGRTBw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:52:39.254284Z","signed_message":"canonical_sha256_bytes"},"source_id":"1212.2994","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d51ec35e670aae2aa70f33a57ee2f754a3318cb644d657d10275b050788ea874","sha256:d81bcce1ce449718349059f85204a61db2f1a7aa02cd65b7aefa5f9ad8fc06b1"],"state_sha256":"b9fb23c7e5a4b5e065b1ed248860b00b905d28578a01bb8936356875fd89f32d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+I48qXoH8w67O2oTZFPRGFIQhLi2LzjsQmrr13APwaQvSoVV3KhPxJv6zKwZ8OEQ1lAsrYjKRpobXz5ej8ZHCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T04:08:27.670132Z","bundle_sha256":"312f20a40ab10882d31fc945c72b7056b334b5b64897db99a52825c53a31db4d"}}