{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:C57LHJAYLKD2VYDLIBSEAYDHQA","short_pith_number":"pith:C57LHJAY","canonical_record":{"source":{"id":"2102.01489","kind":"arxiv","version":5},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2021-02-02T13:51:51Z","cross_cats_sorted":["cond-mat.supr-con","hep-ph","hep-th"],"title_canon_sha256":"b85bc82283285765482127dd46073460fc89f9cb536f111e79beb27b6c419707","abstract_canon_sha256":"b43163d5ce40d6163556997dc89d3143e4ef2d9541718f1b57e3a9e274da5b86"},"schema_version":"1.0"},"canonical_sha256":"177eb3a4185a87aae06b4064406067802c4e665c1c861f5ac59f88671b672dae","source":{"kind":"arxiv","id":"2102.01489","version":5},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2102.01489","created_at":"2026-07-05T04:07:37Z"},{"alias_kind":"arxiv_version","alias_value":"2102.01489v5","created_at":"2026-07-05T04:07:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2102.01489","created_at":"2026-07-05T04:07:37Z"},{"alias_kind":"pith_short_12","alias_value":"C57LHJAYLKD2","created_at":"2026-07-05T04:07:37Z"},{"alias_kind":"pith_short_16","alias_value":"C57LHJAYLKD2VYDL","created_at":"2026-07-05T04:07:37Z"},{"alias_kind":"pith_short_8","alias_value":"C57LHJAY","created_at":"2026-07-05T04:07:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:C57LHJAYLKD2VYDLIBSEAYDHQA","target":"record","payload":{"canonical_record":{"source":{"id":"2102.01489","kind":"arxiv","version":5},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2021-02-02T13:51:51Z","cross_cats_sorted":["cond-mat.supr-con","hep-ph","hep-th"],"title_canon_sha256":"b85bc82283285765482127dd46073460fc89f9cb536f111e79beb27b6c419707","abstract_canon_sha256":"b43163d5ce40d6163556997dc89d3143e4ef2d9541718f1b57e3a9e274da5b86"},"schema_version":"1.0"},"canonical_sha256":"177eb3a4185a87aae06b4064406067802c4e665c1c861f5ac59f88671b672dae","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:07:37.307873Z","signature_b64":"tvT7wX9vpnYu12coX7Vg9UnfbcoGGeoB7lWFaFm4jdK+eoUlrOhGbDISH4oL8/QrzsMDI3K9Xbzn9ITxD64eAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"177eb3a4185a87aae06b4064406067802c4e665c1c861f5ac59f88671b672dae","last_reissued_at":"2026-07-05T04:07:37.307381Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:07:37.307381Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2102.01489","source_version":5,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T04:07:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YUBPV9sDHUYmnkqHqFFmC7XdP17cjgxRwK0HSJjvdzgW5+60DZ84ONqCkCjIL7TQQHdoRTWPELtkObNaahTnAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T14:59:17.215483Z"},"content_sha256":"e6db7675c49babaca313ab17a59a986dec505bd1f5796d882d765792e529a8a2","schema_version":"1.0","event_id":"sha256:e6db7675c49babaca313ab17a59a986dec505bd1f5796d882d765792e529a8a2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:C57LHJAYLKD2VYDLIBSEAYDHQA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Possible alterations of local gravitational field inside a superconductor","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.supr-con","hep-ph","hep-th"],"primary_cat":"gr-qc","authors_text":"A. Gallerati, G. A. Ummarino","submitted_at":"2021-02-02T13:51:51Z","abstract_excerpt":"We calculate the possible interaction between a superconductor and the static Earth's gravitational fields, making use of the gravito-Maxwell formalism combined with the time-dependent Ginzburg-Landau theory. We try to estimate which are the most favourable conditions to enhance the effect, optimizing the superconductor parameters characterizing the chosen sample. We also give a qualitative comparison of the behaviour of high-$T_\\text{c}$ and classical low-$T_\\text{c}$ superconductors with respect to the gravity/superfluid interplay."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2102.01489","kind":"arxiv","version":5},"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/2102.01489/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":"2026-07-05T04:07:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bXlL06T7PcvxERNEWa+EQodnp98KkeA2YVKXa1WZwfYIUGjCI9S+M1tjhH7JEEkA7RpAA/BCL9+N/i5dsD66Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T14:59:17.215820Z"},"content_sha256":"43176f3802759221b52ccc7aa0ec5367592edfa86610338f5a1b62beb2885ad8","schema_version":"1.0","event_id":"sha256:43176f3802759221b52ccc7aa0ec5367592edfa86610338f5a1b62beb2885ad8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/C57LHJAYLKD2VYDLIBSEAYDHQA/bundle.json","state_url":"https://pith.science/pith/C57LHJAYLKD2VYDLIBSEAYDHQA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/C57LHJAYLKD2VYDLIBSEAYDHQA/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":"2026-08-14T14:59:17Z","links":{"resolver":"https://pith.science/pith/C57LHJAYLKD2VYDLIBSEAYDHQA","bundle":"https://pith.science/pith/C57LHJAYLKD2VYDLIBSEAYDHQA/bundle.json","state":"https://pith.science/pith/C57LHJAYLKD2VYDLIBSEAYDHQA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/C57LHJAYLKD2VYDLIBSEAYDHQA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:C57LHJAYLKD2VYDLIBSEAYDHQA","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":"b43163d5ce40d6163556997dc89d3143e4ef2d9541718f1b57e3a9e274da5b86","cross_cats_sorted":["cond-mat.supr-con","hep-ph","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2021-02-02T13:51:51Z","title_canon_sha256":"b85bc82283285765482127dd46073460fc89f9cb536f111e79beb27b6c419707"},"schema_version":"1.0","source":{"id":"2102.01489","kind":"arxiv","version":5}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2102.01489","created_at":"2026-07-05T04:07:37Z"},{"alias_kind":"arxiv_version","alias_value":"2102.01489v5","created_at":"2026-07-05T04:07:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2102.01489","created_at":"2026-07-05T04:07:37Z"},{"alias_kind":"pith_short_12","alias_value":"C57LHJAYLKD2","created_at":"2026-07-05T04:07:37Z"},{"alias_kind":"pith_short_16","alias_value":"C57LHJAYLKD2VYDL","created_at":"2026-07-05T04:07:37Z"},{"alias_kind":"pith_short_8","alias_value":"C57LHJAY","created_at":"2026-07-05T04:07:37Z"}],"graph_snapshots":[{"event_id":"sha256:43176f3802759221b52ccc7aa0ec5367592edfa86610338f5a1b62beb2885ad8","target":"graph","created_at":"2026-07-05T04:07:37Z","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/2102.01489/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We calculate the possible interaction between a superconductor and the static Earth's gravitational fields, making use of the gravito-Maxwell formalism combined with the time-dependent Ginzburg-Landau theory. We try to estimate which are the most favourable conditions to enhance the effect, optimizing the superconductor parameters characterizing the chosen sample. We also give a qualitative comparison of the behaviour of high-$T_\\text{c}$ and classical low-$T_\\text{c}$ superconductors with respect to the gravity/superfluid interplay.","authors_text":"A. Gallerati, G. A. Ummarino","cross_cats":["cond-mat.supr-con","hep-ph","hep-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2021-02-02T13:51:51Z","title":"Possible alterations of local gravitational field inside a superconductor"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2102.01489","kind":"arxiv","version":5},"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:e6db7675c49babaca313ab17a59a986dec505bd1f5796d882d765792e529a8a2","target":"record","created_at":"2026-07-05T04:07:37Z","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":"b43163d5ce40d6163556997dc89d3143e4ef2d9541718f1b57e3a9e274da5b86","cross_cats_sorted":["cond-mat.supr-con","hep-ph","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2021-02-02T13:51:51Z","title_canon_sha256":"b85bc82283285765482127dd46073460fc89f9cb536f111e79beb27b6c419707"},"schema_version":"1.0","source":{"id":"2102.01489","kind":"arxiv","version":5}},"canonical_sha256":"177eb3a4185a87aae06b4064406067802c4e665c1c861f5ac59f88671b672dae","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"177eb3a4185a87aae06b4064406067802c4e665c1c861f5ac59f88671b672dae","first_computed_at":"2026-07-05T04:07:37.307381Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:07:37.307381Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"tvT7wX9vpnYu12coX7Vg9UnfbcoGGeoB7lWFaFm4jdK+eoUlrOhGbDISH4oL8/QrzsMDI3K9Xbzn9ITxD64eAw==","signature_status":"signed_v1","signed_at":"2026-07-05T04:07:37.307873Z","signed_message":"canonical_sha256_bytes"},"source_id":"2102.01489","source_kind":"arxiv","source_version":5}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e6db7675c49babaca313ab17a59a986dec505bd1f5796d882d765792e529a8a2","sha256:43176f3802759221b52ccc7aa0ec5367592edfa86610338f5a1b62beb2885ad8"],"state_sha256":"02f98dd3762094aaeabdf386a3456b3b1e9b5c8eeb25cdad6a9f001f43cb7891"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/xuT6d3lNwHuZXSxDK8z8G6l9uVV1Y6xSfprIghtew453c1040ymkFl/6BK9Tf3OogKLDABUXA/jf7nKpWYNBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-14T14:59:17.219606Z","bundle_sha256":"8d8baa874560f61c87674ad80e776c3c5af0d14ea70b5a99b1a1ec1949d0f89d"}}