{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:YB2WSRYZ2IZDR4TNEODNA3WKLZ","short_pith_number":"pith:YB2WSRYZ","canonical_record":{"source":{"id":"2006.09334","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2020-06-16T17:18:44Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"60dfd8bfe972d31fc3537a2e4b00218c778ac1fa8c5bcd92c48d032de92b1a72","abstract_canon_sha256":"abfa4c79a0da0d19a0de57f67750cc18accfdf15454d5ecbd7713517bff7ab90"},"schema_version":"1.0"},"canonical_sha256":"c075694719d23238f26d2386d06eca5e639e816a731aff16655ba91ba8c162ad","source":{"kind":"arxiv","id":"2006.09334","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2006.09334","created_at":"2026-07-05T02:18:52Z"},{"alias_kind":"arxiv_version","alias_value":"2006.09334v1","created_at":"2026-07-05T02:18:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2006.09334","created_at":"2026-07-05T02:18:52Z"},{"alias_kind":"pith_short_12","alias_value":"YB2WSRYZ2IZD","created_at":"2026-07-05T02:18:52Z"},{"alias_kind":"pith_short_16","alias_value":"YB2WSRYZ2IZDR4TN","created_at":"2026-07-05T02:18:52Z"},{"alias_kind":"pith_short_8","alias_value":"YB2WSRYZ","created_at":"2026-07-05T02:18:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:YB2WSRYZ2IZDR4TNEODNA3WKLZ","target":"record","payload":{"canonical_record":{"source":{"id":"2006.09334","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2020-06-16T17:18:44Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"60dfd8bfe972d31fc3537a2e4b00218c778ac1fa8c5bcd92c48d032de92b1a72","abstract_canon_sha256":"abfa4c79a0da0d19a0de57f67750cc18accfdf15454d5ecbd7713517bff7ab90"},"schema_version":"1.0"},"canonical_sha256":"c075694719d23238f26d2386d06eca5e639e816a731aff16655ba91ba8c162ad","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:18:52.726477Z","signature_b64":"XQoCfsYy3Nmm+OpDRrKC3fNI1KuLdGU9MKgLh98cbIhjohE5BhiM9vrTKKVQR8siGQoCLx7TATuVF1Ho2SoNDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c075694719d23238f26d2386d06eca5e639e816a731aff16655ba91ba8c162ad","last_reissued_at":"2026-07-05T02:18:52.726011Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:18:52.726011Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2006.09334","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":"2026-07-05T02:18:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nWsFnQa85kQrfF2ozc6skbCPwPV3AbfMuSy2soaq+YQ+MNSrmqFMqEBpANOO4B5929gr14b7Fn+Livtq/DZhAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T21:19:47.588851Z"},"content_sha256":"ddec444d20ad1029f17aacdf05a24d37680fe5ef6e5171d1c46b958bc9b5f92e","schema_version":"1.0","event_id":"sha256:ddec444d20ad1029f17aacdf05a24d37680fe5ef6e5171d1c46b958bc9b5f92e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:YB2WSRYZ2IZDR4TNEODNA3WKLZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Gravity Probe Spin: Prospects for measuring general-relativistic precession of intrinsic spin using a ferromagnetic gyroscope","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["quant-ph"],"primary_cat":"gr-qc","authors_text":"Alexander O. Sushkov, Derek F. Jackson Kimball, Dmitry Budker, Pavel Fadeev, Peter W. Graham, Tao Wang, Y. B. Band","submitted_at":"2020-06-16T17:18:44Z","abstract_excerpt":"An experimental test at the intersection of quantum physics and general relativity is proposed: measurement of relativistic frame dragging and geodetic precession using intrinsic spin of electrons. The behavior of intrinsic spin in spacetime dragged and warped by a massive rotating body is an experimentally open question, hence the results of such a measurement could have important theoretical consequences. Such a measurement is possible by using mm-scale ferromagnetic gyroscopes in orbit around the Earth. Under conditions where the rotational angular momentum of a ferromagnet is sufficiently "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2006.09334","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2006.09334/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T02:18:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rubRvWcnf7rt27OoGb1alITTNpLkLMc0bq4pWlv0N3HUo6S2rWanvFubkRDA3jVWM7fAe5pZdnnwOD0nzE6GBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T21:19:47.589346Z"},"content_sha256":"6acb35ed0e78ddd392b56bd8a8c05ccc7337bb59002e8019bd3fe136ee05c32c","schema_version":"1.0","event_id":"sha256:6acb35ed0e78ddd392b56bd8a8c05ccc7337bb59002e8019bd3fe136ee05c32c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YB2WSRYZ2IZDR4TNEODNA3WKLZ/bundle.json","state_url":"https://pith.science/pith/YB2WSRYZ2IZDR4TNEODNA3WKLZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YB2WSRYZ2IZDR4TNEODNA3WKLZ/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":"2026-08-10T21:19:47Z","links":{"resolver":"https://pith.science/pith/YB2WSRYZ2IZDR4TNEODNA3WKLZ","bundle":"https://pith.science/pith/YB2WSRYZ2IZDR4TNEODNA3WKLZ/bundle.json","state":"https://pith.science/pith/YB2WSRYZ2IZDR4TNEODNA3WKLZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YB2WSRYZ2IZDR4TNEODNA3WKLZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:YB2WSRYZ2IZDR4TNEODNA3WKLZ","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":"abfa4c79a0da0d19a0de57f67750cc18accfdf15454d5ecbd7713517bff7ab90","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2020-06-16T17:18:44Z","title_canon_sha256":"60dfd8bfe972d31fc3537a2e4b00218c778ac1fa8c5bcd92c48d032de92b1a72"},"schema_version":"1.0","source":{"id":"2006.09334","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2006.09334","created_at":"2026-07-05T02:18:52Z"},{"alias_kind":"arxiv_version","alias_value":"2006.09334v1","created_at":"2026-07-05T02:18:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2006.09334","created_at":"2026-07-05T02:18:52Z"},{"alias_kind":"pith_short_12","alias_value":"YB2WSRYZ2IZD","created_at":"2026-07-05T02:18:52Z"},{"alias_kind":"pith_short_16","alias_value":"YB2WSRYZ2IZDR4TN","created_at":"2026-07-05T02:18:52Z"},{"alias_kind":"pith_short_8","alias_value":"YB2WSRYZ","created_at":"2026-07-05T02:18:52Z"}],"graph_snapshots":[{"event_id":"sha256:6acb35ed0e78ddd392b56bd8a8c05ccc7337bb59002e8019bd3fe136ee05c32c","target":"graph","created_at":"2026-07-05T02:18:52Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2006.09334/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"An experimental test at the intersection of quantum physics and general relativity is proposed: measurement of relativistic frame dragging and geodetic precession using intrinsic spin of electrons. The behavior of intrinsic spin in spacetime dragged and warped by a massive rotating body is an experimentally open question, hence the results of such a measurement could have important theoretical consequences. Such a measurement is possible by using mm-scale ferromagnetic gyroscopes in orbit around the Earth. Under conditions where the rotational angular momentum of a ferromagnet is sufficiently ","authors_text":"Alexander O. Sushkov, Derek F. Jackson Kimball, Dmitry Budker, Pavel Fadeev, Peter W. Graham, Tao Wang, Y. B. Band","cross_cats":["quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2020-06-16T17:18:44Z","title":"Gravity Probe Spin: Prospects for measuring general-relativistic precession of intrinsic spin using a ferromagnetic gyroscope"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2006.09334","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:ddec444d20ad1029f17aacdf05a24d37680fe5ef6e5171d1c46b958bc9b5f92e","target":"record","created_at":"2026-07-05T02:18:52Z","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":"abfa4c79a0da0d19a0de57f67750cc18accfdf15454d5ecbd7713517bff7ab90","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2020-06-16T17:18:44Z","title_canon_sha256":"60dfd8bfe972d31fc3537a2e4b00218c778ac1fa8c5bcd92c48d032de92b1a72"},"schema_version":"1.0","source":{"id":"2006.09334","kind":"arxiv","version":1}},"canonical_sha256":"c075694719d23238f26d2386d06eca5e639e816a731aff16655ba91ba8c162ad","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c075694719d23238f26d2386d06eca5e639e816a731aff16655ba91ba8c162ad","first_computed_at":"2026-07-05T02:18:52.726011Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:18:52.726011Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"XQoCfsYy3Nmm+OpDRrKC3fNI1KuLdGU9MKgLh98cbIhjohE5BhiM9vrTKKVQR8siGQoCLx7TATuVF1Ho2SoNDQ==","signature_status":"signed_v1","signed_at":"2026-07-05T02:18:52.726477Z","signed_message":"canonical_sha256_bytes"},"source_id":"2006.09334","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ddec444d20ad1029f17aacdf05a24d37680fe5ef6e5171d1c46b958bc9b5f92e","sha256:6acb35ed0e78ddd392b56bd8a8c05ccc7337bb59002e8019bd3fe136ee05c32c"],"state_sha256":"498d92a561f18f224c71e4f55f45fbd5a1498a65f817ec40668df9f38ce43ddc"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+TjjkeXmKEksckPVxwVR2plzoENmK/s471Xog7VpzC8RdTqPwkrxMiyJ30FxqhceWXYPPz8LdZTJqO1R4a0eAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-10T21:19:47.592939Z","bundle_sha256":"233625bf7a0fff20ce8228fed4a27b524a090cb7477ed32c1bba2c88756993a8"}}