{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:PY4VF4X7EBESG4TEKGRQVX2NID","short_pith_number":"pith:PY4VF4X7","canonical_record":{"source":{"id":"2102.06528","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2021-02-10T12:12:23Z","cross_cats_sorted":[],"title_canon_sha256":"44d22a607ffbb93a130d9ab23d1d00e76d0a363bddae849db72797be9b89cade","abstract_canon_sha256":"ac4416845bff23f5385f5dd30418d52d75a1ab61223f27e4a32239321514eb3f"},"schema_version":"1.0"},"canonical_sha256":"7e3952f2ff204923726451a30adf4d40ebece47dd87b08f2cc07a92082a10866","source":{"kind":"arxiv","id":"2102.06528","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2102.06528","created_at":"2026-07-05T02:27:41Z"},{"alias_kind":"arxiv_version","alias_value":"2102.06528v2","created_at":"2026-07-05T02:27:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2102.06528","created_at":"2026-07-05T02:27:41Z"},{"alias_kind":"pith_short_12","alias_value":"PY4VF4X7EBES","created_at":"2026-07-05T02:27:41Z"},{"alias_kind":"pith_short_16","alias_value":"PY4VF4X7EBESG4TE","created_at":"2026-07-05T02:27:41Z"},{"alias_kind":"pith_short_8","alias_value":"PY4VF4X7","created_at":"2026-07-05T02:27:41Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:PY4VF4X7EBESG4TEKGRQVX2NID","target":"record","payload":{"canonical_record":{"source":{"id":"2102.06528","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2021-02-10T12:12:23Z","cross_cats_sorted":[],"title_canon_sha256":"44d22a607ffbb93a130d9ab23d1d00e76d0a363bddae849db72797be9b89cade","abstract_canon_sha256":"ac4416845bff23f5385f5dd30418d52d75a1ab61223f27e4a32239321514eb3f"},"schema_version":"1.0"},"canonical_sha256":"7e3952f2ff204923726451a30adf4d40ebece47dd87b08f2cc07a92082a10866","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:27:41.750629Z","signature_b64":"I0y/OGIupXzuy3wmL8XlE3CD/DSWXg1ckB/t8rKoVVcaDYU8IGSTnbNzC8GgGLRhK7YlNCIUArGWfrF2cCfICg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7e3952f2ff204923726451a30adf4d40ebece47dd87b08f2cc07a92082a10866","last_reissued_at":"2026-07-05T02:27:41.750102Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:27:41.750102Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2102.06528","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":"2026-07-05T02:27:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bC32ZWOQxEx1TIs86NkYKXR1dFU+1CH/4w+1yjMASTGPL5CCBgD5b6ik7gJ52g9X4gBN+kUQg50zjGIl/CHlBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T06:12:36.645751Z"},"content_sha256":"919be641463d9403de10941380327b8dfa5d7aa378d154e2a3f13dc059bb92fd","schema_version":"1.0","event_id":"sha256:919be641463d9403de10941380327b8dfa5d7aa378d154e2a3f13dc059bb92fd"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:PY4VF4X7EBESG4TEKGRQVX2NID","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Tale of Two Countries: A Longitudinal Cross-Country Study of Mobile Users' Reactions to the COVID-19 Pandemic Through the Lens of App Popularity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.SI","authors_text":"Fei Lyu, Gareth Tyson, Haoyu Wang, Liu Wang, Yi Wang","submitted_at":"2021-02-10T12:12:23Z","abstract_excerpt":"The ongoing COVID-19 pandemic has profoundly impacted people's life around the world, including how they interact with mobile technologies. In this paper, we seek to develop an understanding of how the dynamic trajectory of a pandemic shapes mobile phone users' experiences. Through the lens of app popularity, we approach this goal from a cross-country perspective. We compile a dataset consisting of six-month daily snapshots of the most popular apps in the iOS App Store in China and the US, where the pandemic has exhibited distinct trajectories. Using this longitudinal dataset, our analysis pro"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2102.06528","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2102.06528/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":"2026-07-05T02:27:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Z1nRWiGDewIEYgjtA8LQ8R4q5Jo0r5JztzhW4bSaCYTa3FkeCUxo2+crQSVCZ8C6pEmdsCRgzCZ0rlpv0BC/AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T06:12:36.646517Z"},"content_sha256":"36d52b1bccfcbab23e30727f9c4b82e8e432c32fb990f8c3314361ed0f7c7904","schema_version":"1.0","event_id":"sha256:36d52b1bccfcbab23e30727f9c4b82e8e432c32fb990f8c3314361ed0f7c7904"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PY4VF4X7EBESG4TEKGRQVX2NID/bundle.json","state_url":"https://pith.science/pith/PY4VF4X7EBESG4TEKGRQVX2NID/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PY4VF4X7EBESG4TEKGRQVX2NID/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":"2026-08-07T06:12:36Z","links":{"resolver":"https://pith.science/pith/PY4VF4X7EBESG4TEKGRQVX2NID","bundle":"https://pith.science/pith/PY4VF4X7EBESG4TEKGRQVX2NID/bundle.json","state":"https://pith.science/pith/PY4VF4X7EBESG4TEKGRQVX2NID/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PY4VF4X7EBESG4TEKGRQVX2NID/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:PY4VF4X7EBESG4TEKGRQVX2NID","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":"ac4416845bff23f5385f5dd30418d52d75a1ab61223f27e4a32239321514eb3f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2021-02-10T12:12:23Z","title_canon_sha256":"44d22a607ffbb93a130d9ab23d1d00e76d0a363bddae849db72797be9b89cade"},"schema_version":"1.0","source":{"id":"2102.06528","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2102.06528","created_at":"2026-07-05T02:27:41Z"},{"alias_kind":"arxiv_version","alias_value":"2102.06528v2","created_at":"2026-07-05T02:27:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2102.06528","created_at":"2026-07-05T02:27:41Z"},{"alias_kind":"pith_short_12","alias_value":"PY4VF4X7EBES","created_at":"2026-07-05T02:27:41Z"},{"alias_kind":"pith_short_16","alias_value":"PY4VF4X7EBESG4TE","created_at":"2026-07-05T02:27:41Z"},{"alias_kind":"pith_short_8","alias_value":"PY4VF4X7","created_at":"2026-07-05T02:27:41Z"}],"graph_snapshots":[{"event_id":"sha256:36d52b1bccfcbab23e30727f9c4b82e8e432c32fb990f8c3314361ed0f7c7904","target":"graph","created_at":"2026-07-05T02:27:41Z","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/2102.06528/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The ongoing COVID-19 pandemic has profoundly impacted people's life around the world, including how they interact with mobile technologies. In this paper, we seek to develop an understanding of how the dynamic trajectory of a pandemic shapes mobile phone users' experiences. Through the lens of app popularity, we approach this goal from a cross-country perspective. We compile a dataset consisting of six-month daily snapshots of the most popular apps in the iOS App Store in China and the US, where the pandemic has exhibited distinct trajectories. Using this longitudinal dataset, our analysis pro","authors_text":"Fei Lyu, Gareth Tyson, Haoyu Wang, Liu Wang, Yi Wang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2021-02-10T12:12:23Z","title":"A Tale of Two Countries: A Longitudinal Cross-Country Study of Mobile Users' Reactions to the COVID-19 Pandemic Through the Lens of App Popularity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2102.06528","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":"sha256:919be641463d9403de10941380327b8dfa5d7aa378d154e2a3f13dc059bb92fd","target":"record","created_at":"2026-07-05T02:27:41Z","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":"ac4416845bff23f5385f5dd30418d52d75a1ab61223f27e4a32239321514eb3f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2021-02-10T12:12:23Z","title_canon_sha256":"44d22a607ffbb93a130d9ab23d1d00e76d0a363bddae849db72797be9b89cade"},"schema_version":"1.0","source":{"id":"2102.06528","kind":"arxiv","version":2}},"canonical_sha256":"7e3952f2ff204923726451a30adf4d40ebece47dd87b08f2cc07a92082a10866","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7e3952f2ff204923726451a30adf4d40ebece47dd87b08f2cc07a92082a10866","first_computed_at":"2026-07-05T02:27:41.750102Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:27:41.750102Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"I0y/OGIupXzuy3wmL8XlE3CD/DSWXg1ckB/t8rKoVVcaDYU8IGSTnbNzC8GgGLRhK7YlNCIUArGWfrF2cCfICg==","signature_status":"signed_v1","signed_at":"2026-07-05T02:27:41.750629Z","signed_message":"canonical_sha256_bytes"},"source_id":"2102.06528","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:919be641463d9403de10941380327b8dfa5d7aa378d154e2a3f13dc059bb92fd","sha256:36d52b1bccfcbab23e30727f9c4b82e8e432c32fb990f8c3314361ed0f7c7904"],"state_sha256":"0a1ecbac360d5e6d49da39e1f1f4d16b98ceadb2cf750160510944df55bdbcb3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ocXs+Jvt2Zm0PLAgZALmPrWb/GQpfPmCSpryFkn9mrHCZH8YSap/eonreoNV+HUKfMqYZmrTE7jzk1e1NagZBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-07T06:12:36.652346Z","bundle_sha256":"b71573312739cfa1823bbe8a3917a31742b66102b3e9845ad83c8b5ea332b406"}}