{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:GOQA3UPPUTT5RJJJ6PPQD6DUGF","short_pith_number":"pith:GOQA3UPP","canonical_record":{"source":{"id":"1702.06425","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2017-02-21T15:01:56Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"b8ad6762954966715ea0ed06c3517394f0e5d61ee913a93a2ff748f014fe2aa9","abstract_canon_sha256":"f91bfea6335d082e1343f334bef1d6a1c2b36b4d255cd77c8f21b2c8b963de61"},"schema_version":"1.0"},"canonical_sha256":"33a00dd1efa4e7d8a529f3df01f874314a308c05481d9f1f9f251496594512d2","source":{"kind":"arxiv","id":"1702.06425","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1702.06425","created_at":"2026-05-18T00:32:59Z"},{"alias_kind":"arxiv_version","alias_value":"1702.06425v1","created_at":"2026-05-18T00:32:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1702.06425","created_at":"2026-05-18T00:32:59Z"},{"alias_kind":"pith_short_12","alias_value":"GOQA3UPPUTT5","created_at":"2026-05-18T12:31:18Z"},{"alias_kind":"pith_short_16","alias_value":"GOQA3UPPUTT5RJJJ","created_at":"2026-05-18T12:31:18Z"},{"alias_kind":"pith_short_8","alias_value":"GOQA3UPP","created_at":"2026-05-18T12:31:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:GOQA3UPPUTT5RJJJ6PPQD6DUGF","target":"record","payload":{"canonical_record":{"source":{"id":"1702.06425","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2017-02-21T15:01:56Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"b8ad6762954966715ea0ed06c3517394f0e5d61ee913a93a2ff748f014fe2aa9","abstract_canon_sha256":"f91bfea6335d082e1343f334bef1d6a1c2b36b4d255cd77c8f21b2c8b963de61"},"schema_version":"1.0"},"canonical_sha256":"33a00dd1efa4e7d8a529f3df01f874314a308c05481d9f1f9f251496594512d2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:32:59.859847Z","signature_b64":"8o6bwdPkpu0pGvh0D3rk87BmrxHiAiAnbVCjQxNcwNAggFjTT6DWHF8g36tLytPyK87SPFWZFfZf9wFswt23DQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"33a00dd1efa4e7d8a529f3df01f874314a308c05481d9f1f9f251496594512d2","last_reissued_at":"2026-05-18T00:32:59.859211Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:32:59.859211Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1702.06425","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":"2026-05-18T00:32:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YSXOjGfZBMSCzrpGNj8oGRGzmAHyxj5lXhQMVcJdFZMa1VV3js+Z8yD/S02s9yFlIv2O2Lt+b0Vo2uoolwIOBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T11:46:00.234773Z"},"content_sha256":"87d24b7a249ebe7fafbb7a07bcfcf5ec150acbead95485a4c06499515e277716","schema_version":"1.0","event_id":"sha256:87d24b7a249ebe7fafbb7a07bcfcf5ec150acbead95485a4c06499515e277716"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:GOQA3UPPUTT5RJJJ6PPQD6DUGF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Magnetic cooling for microkelvin nanoelectronics on a cryofree platform","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall"],"primary_cat":"physics.ins-det","authors_text":"Dario Maradan, Dominik M. Zumb\\\"uhl, Florian Froning, Lucas Casparis, Mario Palma, Tai-Min Liu","submitted_at":"2017-02-21T15:01:56Z","abstract_excerpt":"We present a parallel network of 16 demagnetization refrigerators mounted on a cryofree dilution refrigerator aimed to cool nanoelectronic devices to sub-millikelvin temperatures. To measure the refrigerator temperature, the thermal motion of electrons in a Ag wire -- thermalized by a spot-weld to one of the Cu nuclear refrigerators -- is inductively picked-up by a superconducting gradiometer and amplified by a SQUID mounted at 4 K. The noise thermometer as well as other thermometers are used to characterize the performance of the system, finding magnetic field independent heat-leaks of a few "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1702.06425","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":"2026-05-18T00:32:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tbjObXxjTvFZru+zyZaHar41cJQDhpC6tm9Is7jdi2dIX6NUZNtSzKoCx59qaci5wvVDFPOCntU5Uzbjj+KwCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T11:46:00.235131Z"},"content_sha256":"ebe87c7ce035291c050909dfff2fa8c817b7c6e3d88eb0baf7a623ab819c2d6d","schema_version":"1.0","event_id":"sha256:ebe87c7ce035291c050909dfff2fa8c817b7c6e3d88eb0baf7a623ab819c2d6d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GOQA3UPPUTT5RJJJ6PPQD6DUGF/bundle.json","state_url":"https://pith.science/pith/GOQA3UPPUTT5RJJJ6PPQD6DUGF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GOQA3UPPUTT5RJJJ6PPQD6DUGF/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":"2026-06-05T11:46:00Z","links":{"resolver":"https://pith.science/pith/GOQA3UPPUTT5RJJJ6PPQD6DUGF","bundle":"https://pith.science/pith/GOQA3UPPUTT5RJJJ6PPQD6DUGF/bundle.json","state":"https://pith.science/pith/GOQA3UPPUTT5RJJJ6PPQD6DUGF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GOQA3UPPUTT5RJJJ6PPQD6DUGF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:GOQA3UPPUTT5RJJJ6PPQD6DUGF","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":"f91bfea6335d082e1343f334bef1d6a1c2b36b4d255cd77c8f21b2c8b963de61","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2017-02-21T15:01:56Z","title_canon_sha256":"b8ad6762954966715ea0ed06c3517394f0e5d61ee913a93a2ff748f014fe2aa9"},"schema_version":"1.0","source":{"id":"1702.06425","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1702.06425","created_at":"2026-05-18T00:32:59Z"},{"alias_kind":"arxiv_version","alias_value":"1702.06425v1","created_at":"2026-05-18T00:32:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1702.06425","created_at":"2026-05-18T00:32:59Z"},{"alias_kind":"pith_short_12","alias_value":"GOQA3UPPUTT5","created_at":"2026-05-18T12:31:18Z"},{"alias_kind":"pith_short_16","alias_value":"GOQA3UPPUTT5RJJJ","created_at":"2026-05-18T12:31:18Z"},{"alias_kind":"pith_short_8","alias_value":"GOQA3UPP","created_at":"2026-05-18T12:31:18Z"}],"graph_snapshots":[{"event_id":"sha256:ebe87c7ce035291c050909dfff2fa8c817b7c6e3d88eb0baf7a623ab819c2d6d","target":"graph","created_at":"2026-05-18T00:32:59Z","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":"We present a parallel network of 16 demagnetization refrigerators mounted on a cryofree dilution refrigerator aimed to cool nanoelectronic devices to sub-millikelvin temperatures. To measure the refrigerator temperature, the thermal motion of electrons in a Ag wire -- thermalized by a spot-weld to one of the Cu nuclear refrigerators -- is inductively picked-up by a superconducting gradiometer and amplified by a SQUID mounted at 4 K. The noise thermometer as well as other thermometers are used to characterize the performance of the system, finding magnetic field independent heat-leaks of a few ","authors_text":"Dario Maradan, Dominik M. Zumb\\\"uhl, Florian Froning, Lucas Casparis, Mario Palma, Tai-Min Liu","cross_cats":["cond-mat.mes-hall"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2017-02-21T15:01:56Z","title":"Magnetic cooling for microkelvin nanoelectronics on a cryofree platform"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1702.06425","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":"sha256:87d24b7a249ebe7fafbb7a07bcfcf5ec150acbead95485a4c06499515e277716","target":"record","created_at":"2026-05-18T00:32:59Z","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":"f91bfea6335d082e1343f334bef1d6a1c2b36b4d255cd77c8f21b2c8b963de61","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2017-02-21T15:01:56Z","title_canon_sha256":"b8ad6762954966715ea0ed06c3517394f0e5d61ee913a93a2ff748f014fe2aa9"},"schema_version":"1.0","source":{"id":"1702.06425","kind":"arxiv","version":1}},"canonical_sha256":"33a00dd1efa4e7d8a529f3df01f874314a308c05481d9f1f9f251496594512d2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"33a00dd1efa4e7d8a529f3df01f874314a308c05481d9f1f9f251496594512d2","first_computed_at":"2026-05-18T00:32:59.859211Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:32:59.859211Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"8o6bwdPkpu0pGvh0D3rk87BmrxHiAiAnbVCjQxNcwNAggFjTT6DWHF8g36tLytPyK87SPFWZFfZf9wFswt23DQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:32:59.859847Z","signed_message":"canonical_sha256_bytes"},"source_id":"1702.06425","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:87d24b7a249ebe7fafbb7a07bcfcf5ec150acbead95485a4c06499515e277716","sha256:ebe87c7ce035291c050909dfff2fa8c817b7c6e3d88eb0baf7a623ab819c2d6d"],"state_sha256":"7a8b0622e589bc213cec5726721d369dd5b4e4ca7e9759ea6836a4015495b54d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Q6me6XcxP+4gyJZPsd0c9vXY5lxmxvOBARxULXlO6Z+hb4l+zURtdMujmdMa6D0UsW6QJNRNgauE5YW7NzrBCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T11:46:00.237156Z","bundle_sha256":"4d78e36a755ed2f302d0f53f10a128d68aaa1051c0e34274cd4934bdf8b60d28"}}