{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:UHS7E7PHGJDVXWK6T7KTGVKIF3","short_pith_number":"pith:UHS7E7PH","canonical_record":{"source":{"id":"1403.4641","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2014-03-18T23:10:53Z","cross_cats_sorted":["cond-mat.quant-gas","physics.optics"],"title_canon_sha256":"568a56ca1c4c68c0bd64d6728fc6fb35a9e10144190316af6d6b1c928191ba61","abstract_canon_sha256":"deed6e0a418b105b0287236929842847c248c7b3b2a2c6f2b1c7c91b8dfae296"},"schema_version":"1.0"},"canonical_sha256":"a1e5f27de732475bd95e9fd53355482ed6fd9603aea313599064a4a14aa687eb","source":{"kind":"arxiv","id":"1403.4641","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1403.4641","created_at":"2026-05-18T02:30:32Z"},{"alias_kind":"arxiv_version","alias_value":"1403.4641v2","created_at":"2026-05-18T02:30:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1403.4641","created_at":"2026-05-18T02:30:32Z"},{"alias_kind":"pith_short_12","alias_value":"UHS7E7PHGJDV","created_at":"2026-05-18T12:28:52Z"},{"alias_kind":"pith_short_16","alias_value":"UHS7E7PHGJDVXWK6","created_at":"2026-05-18T12:28:52Z"},{"alias_kind":"pith_short_8","alias_value":"UHS7E7PH","created_at":"2026-05-18T12:28:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:UHS7E7PHGJDVXWK6T7KTGVKIF3","target":"record","payload":{"canonical_record":{"source":{"id":"1403.4641","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2014-03-18T23:10:53Z","cross_cats_sorted":["cond-mat.quant-gas","physics.optics"],"title_canon_sha256":"568a56ca1c4c68c0bd64d6728fc6fb35a9e10144190316af6d6b1c928191ba61","abstract_canon_sha256":"deed6e0a418b105b0287236929842847c248c7b3b2a2c6f2b1c7c91b8dfae296"},"schema_version":"1.0"},"canonical_sha256":"a1e5f27de732475bd95e9fd53355482ed6fd9603aea313599064a4a14aa687eb","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:30:32.140338Z","signature_b64":"sm2knC3AvIf9Jfl87z+fbEzgP2g3zX0k8W7DyJu0rxRoC6GlcbIcgPaqjhBc3Xed2r5Tccxjuo8fNBvBOIIUAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a1e5f27de732475bd95e9fd53355482ed6fd9603aea313599064a4a14aa687eb","last_reissued_at":"2026-05-18T02:30:32.139852Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:30:32.139852Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1403.4641","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":"2026-05-18T02:30:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Sbm9NP+TkX8h79rx9gfvStKVGgfD8PiV/BpMWp1540rgQlMBQf36dindKA3oBfzgEWB5+iRodHVdEvxdWhWdBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T05:10:09.750614Z"},"content_sha256":"b0140adf33b8c8a3d1eb88b8b051cfc565461ef3d4ff129a5024f5bb58409813","schema_version":"1.0","event_id":"sha256:b0140adf33b8c8a3d1eb88b8b051cfc565461ef3d4ff129a5024f5bb58409813"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:UHS7E7PHGJDVXWK6T7KTGVKIF3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Production of Rubidium Bose-Einstein Condensates at a 1 Hz Rate","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.quant-gas","physics.optics"],"primary_cat":"physics.atom-ph","authors_text":"Daniel M. Farkas, Evan A. Salim, Jaime Ramirez-Serrano","submitted_at":"2014-03-18T23:10:53Z","abstract_excerpt":"We present an experimental apparatus that produces Bose-Einstein condensates (BECs) of $^{87}$Rb atoms at a rate of 1 Hz. As a demonstration of the system's ability to operate continuously, 30 BECs were produced and imaged in 32.1 s. Without imaging, a single BEC could be produced in 953 ms. The system uses an atom chip to confine atoms in a dimple trap with frequencies exceeding 1 kHz. With this tight trap, the duration of evaporative cooling was reduced to less than 0.5 s. Using principal component analysis, insight into the largest sources of noise and drift was obtained by extracting the d"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1403.4641","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":"2026-05-18T02:30:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8t+4QMjARM1ki1ZbSBREpNOjsXxVoHh21oZbG/WU+gASvc+eOOFPfVeZyGB9oEd2m30ygGgc57uUAGIW3xruAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T05:10:09.751302Z"},"content_sha256":"60665241e834adeb5407654fa21dde379fed40c1050fbd7d24760d069f7a3d17","schema_version":"1.0","event_id":"sha256:60665241e834adeb5407654fa21dde379fed40c1050fbd7d24760d069f7a3d17"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UHS7E7PHGJDVXWK6T7KTGVKIF3/bundle.json","state_url":"https://pith.science/pith/UHS7E7PHGJDVXWK6T7KTGVKIF3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UHS7E7PHGJDVXWK6T7KTGVKIF3/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":"2026-05-31T05:10:09Z","links":{"resolver":"https://pith.science/pith/UHS7E7PHGJDVXWK6T7KTGVKIF3","bundle":"https://pith.science/pith/UHS7E7PHGJDVXWK6T7KTGVKIF3/bundle.json","state":"https://pith.science/pith/UHS7E7PHGJDVXWK6T7KTGVKIF3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UHS7E7PHGJDVXWK6T7KTGVKIF3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:UHS7E7PHGJDVXWK6T7KTGVKIF3","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":"deed6e0a418b105b0287236929842847c248c7b3b2a2c6f2b1c7c91b8dfae296","cross_cats_sorted":["cond-mat.quant-gas","physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2014-03-18T23:10:53Z","title_canon_sha256":"568a56ca1c4c68c0bd64d6728fc6fb35a9e10144190316af6d6b1c928191ba61"},"schema_version":"1.0","source":{"id":"1403.4641","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1403.4641","created_at":"2026-05-18T02:30:32Z"},{"alias_kind":"arxiv_version","alias_value":"1403.4641v2","created_at":"2026-05-18T02:30:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1403.4641","created_at":"2026-05-18T02:30:32Z"},{"alias_kind":"pith_short_12","alias_value":"UHS7E7PHGJDV","created_at":"2026-05-18T12:28:52Z"},{"alias_kind":"pith_short_16","alias_value":"UHS7E7PHGJDVXWK6","created_at":"2026-05-18T12:28:52Z"},{"alias_kind":"pith_short_8","alias_value":"UHS7E7PH","created_at":"2026-05-18T12:28:52Z"}],"graph_snapshots":[{"event_id":"sha256:60665241e834adeb5407654fa21dde379fed40c1050fbd7d24760d069f7a3d17","target":"graph","created_at":"2026-05-18T02:30:32Z","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 an experimental apparatus that produces Bose-Einstein condensates (BECs) of $^{87}$Rb atoms at a rate of 1 Hz. As a demonstration of the system's ability to operate continuously, 30 BECs were produced and imaged in 32.1 s. Without imaging, a single BEC could be produced in 953 ms. The system uses an atom chip to confine atoms in a dimple trap with frequencies exceeding 1 kHz. With this tight trap, the duration of evaporative cooling was reduced to less than 0.5 s. Using principal component analysis, insight into the largest sources of noise and drift was obtained by extracting the d","authors_text":"Daniel M. Farkas, Evan A. Salim, Jaime Ramirez-Serrano","cross_cats":["cond-mat.quant-gas","physics.optics"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2014-03-18T23:10:53Z","title":"Production of Rubidium Bose-Einstein Condensates at a 1 Hz Rate"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1403.4641","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:b0140adf33b8c8a3d1eb88b8b051cfc565461ef3d4ff129a5024f5bb58409813","target":"record","created_at":"2026-05-18T02:30:32Z","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":"deed6e0a418b105b0287236929842847c248c7b3b2a2c6f2b1c7c91b8dfae296","cross_cats_sorted":["cond-mat.quant-gas","physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2014-03-18T23:10:53Z","title_canon_sha256":"568a56ca1c4c68c0bd64d6728fc6fb35a9e10144190316af6d6b1c928191ba61"},"schema_version":"1.0","source":{"id":"1403.4641","kind":"arxiv","version":2}},"canonical_sha256":"a1e5f27de732475bd95e9fd53355482ed6fd9603aea313599064a4a14aa687eb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a1e5f27de732475bd95e9fd53355482ed6fd9603aea313599064a4a14aa687eb","first_computed_at":"2026-05-18T02:30:32.139852Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:30:32.139852Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"sm2knC3AvIf9Jfl87z+fbEzgP2g3zX0k8W7DyJu0rxRoC6GlcbIcgPaqjhBc3Xed2r5Tccxjuo8fNBvBOIIUAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:30:32.140338Z","signed_message":"canonical_sha256_bytes"},"source_id":"1403.4641","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b0140adf33b8c8a3d1eb88b8b051cfc565461ef3d4ff129a5024f5bb58409813","sha256:60665241e834adeb5407654fa21dde379fed40c1050fbd7d24760d069f7a3d17"],"state_sha256":"66c1bdf586b5e283031769a5bbce4e8806e6c349d0625271af270d07bfb06cb1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"e1RR5zvTTrKkl6KFzIVmiLiXa4Awbm7SGH1ui8sayGlmCI4KMIpt6sg6E7ctzel4w93hbTpA07qwJ3Y/ejxSDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T05:10:09.754770Z","bundle_sha256":"9a2cf8b79340fff48476281276bfc64be32ec1f634120b538d034803f09f6367"}}