{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:TA2OGQ545AFBSPUHVX4TQGDHID","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":"18d23263278d38131580aa4b4da7cf3cabf3934e0549e404d51554b8f2b8a7f2","cross_cats_sorted":["astro-ph.IM","gr-qc","physics.ins-det","physics.space-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-09-12T18:25:14Z","title_canon_sha256":"c80ac9ac5ece59cf493813baf61ed0513cd3a5daac260d71e7ab01569a007570"},"schema_version":"1.0","source":{"id":"1309.3234","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1309.3234","created_at":"2026-05-18T02:52:58Z"},{"alias_kind":"arxiv_version","alias_value":"1309.3234v2","created_at":"2026-05-18T02:52:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1309.3234","created_at":"2026-05-18T02:52:58Z"},{"alias_kind":"pith_short_12","alias_value":"TA2OGQ545AFB","created_at":"2026-05-18T12:27:59Z"},{"alias_kind":"pith_short_16","alias_value":"TA2OGQ545AFBSPUH","created_at":"2026-05-18T12:27:59Z"},{"alias_kind":"pith_short_8","alias_value":"TA2OGQ54","created_at":"2026-05-18T12:27:59Z"}],"graph_snapshots":[{"event_id":"sha256:083d3265163309638e60e132aed3ec876e56df979ba89cc89c12d80b694b4d03","target":"graph","created_at":"2026-05-18T02:52:58Z","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":"Although it is often believed that the coldness of space is ideally suited for performing measurements at cryogenic temperatures, this must be regarded with caution for two reasons: Firstly, the sensitive instrument must be completely shielded from the strong solar radiation and therefore, e.g. either be placed inside a satellite or externally on the satellite's shaded side. Secondly, any platform hosting such an experiment in space generally provides an environment close to room temperature for the accommodated equipment. To obtain cryogenic temperatures without active cooling, one must isola","authors_text":"Fabian Hufgard, Gerald Hechenblaikner, Johannes Burkhardt, Markus Aspelmeyer, Nikolai Kiesel, Rainer Kaltenbaek, Ulrich Johann","cross_cats":["astro-ph.IM","gr-qc","physics.ins-det","physics.space-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-09-12T18:25:14Z","title":"How cold can you get in space? Quantum Physics at cryogenic temperatures in space"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1309.3234","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":"sha256:9be81011f3d03ddc3319605b427b1466a7c19ecc0f05456368529432f198fc78","target":"record","created_at":"2026-05-18T02:52:58Z","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":"18d23263278d38131580aa4b4da7cf3cabf3934e0549e404d51554b8f2b8a7f2","cross_cats_sorted":["astro-ph.IM","gr-qc","physics.ins-det","physics.space-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-09-12T18:25:14Z","title_canon_sha256":"c80ac9ac5ece59cf493813baf61ed0513cd3a5daac260d71e7ab01569a007570"},"schema_version":"1.0","source":{"id":"1309.3234","kind":"arxiv","version":2}},"canonical_sha256":"9834e343bce80a193e87adf938186740e61f8aea4d714c38baabea82cd38425b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9834e343bce80a193e87adf938186740e61f8aea4d714c38baabea82cd38425b","first_computed_at":"2026-05-18T02:52:58.351166Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:52:58.351166Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"JDnp2iSc46uYu93k76/V9lzJWapAlQyt1g0j8h7NgmydOn6LaAOsgYA8HZucdtrNJaP0Od0U7ambFmkj+kKICw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:52:58.351789Z","signed_message":"canonical_sha256_bytes"},"source_id":"1309.3234","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9be81011f3d03ddc3319605b427b1466a7c19ecc0f05456368529432f198fc78","sha256:083d3265163309638e60e132aed3ec876e56df979ba89cc89c12d80b694b4d03"],"state_sha256":"37ed6c07d71d231fbc89dda16bfe4e98d5d0726fd005f7104d6c4c7fb0327feb"}