{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:Y77HOMNQV72K6H7P2Z7NO3DGQ7","short_pith_number":"pith:Y77HOMNQ","canonical_record":{"source":{"id":"2012.02946","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"physics.soc-ph","submitted_at":"2020-12-05T04:39:42Z","cross_cats_sorted":[],"title_canon_sha256":"0e3cd7d1d7a080ad63a402430b9413f92087e2c459853d6bb3dfe139663bbb02","abstract_canon_sha256":"22d5f0816eda0c86d26ef095a77df2da4338ce0bfef4c342e5bbefc6246bb289"},"schema_version":"1.0"},"canonical_sha256":"c7fe7731b0aff4af1fefd67ed76c6687ccddc8fc70a861ddf27985dd83e03dc0","source":{"kind":"arxiv","id":"2012.02946","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2012.02946","created_at":"2026-07-05T01:57:24Z"},{"alias_kind":"arxiv_version","alias_value":"2012.02946v1","created_at":"2026-07-05T01:57:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2012.02946","created_at":"2026-07-05T01:57:24Z"},{"alias_kind":"pith_short_12","alias_value":"Y77HOMNQV72K","created_at":"2026-07-05T01:57:24Z"},{"alias_kind":"pith_short_16","alias_value":"Y77HOMNQV72K6H7P","created_at":"2026-07-05T01:57:24Z"},{"alias_kind":"pith_short_8","alias_value":"Y77HOMNQ","created_at":"2026-07-05T01:57:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:Y77HOMNQV72K6H7P2Z7NO3DGQ7","target":"record","payload":{"canonical_record":{"source":{"id":"2012.02946","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"physics.soc-ph","submitted_at":"2020-12-05T04:39:42Z","cross_cats_sorted":[],"title_canon_sha256":"0e3cd7d1d7a080ad63a402430b9413f92087e2c459853d6bb3dfe139663bbb02","abstract_canon_sha256":"22d5f0816eda0c86d26ef095a77df2da4338ce0bfef4c342e5bbefc6246bb289"},"schema_version":"1.0"},"canonical_sha256":"c7fe7731b0aff4af1fefd67ed76c6687ccddc8fc70a861ddf27985dd83e03dc0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:57:24.059927Z","signature_b64":"X5DvsORQv1Tom9BTNFjZcT7I13glFKHA4AUnKSpnkpzhf4dbWLm48rMGYx6ozfBK2dbVMoCqKERUrFnyks35Dg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c7fe7731b0aff4af1fefd67ed76c6687ccddc8fc70a861ddf27985dd83e03dc0","last_reissued_at":"2026-07-05T01:57:24.059580Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:57:24.059580Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2012.02946","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":"2026-07-05T01:57:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gz91HSzf8KGLiGQZYUV9ebilfRnbLvX1LcCLh0sO6srwh1neD2HM2fVG8Mz0yXjn14AVI3hLX5wj0MG7IrflDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T18:05:03.862316Z"},"content_sha256":"53cba8575339959d6c7ed9fd9931609123fa1e5a5803ca087669f0e5c75cf970","schema_version":"1.0","event_id":"sha256:53cba8575339959d6c7ed9fd9931609123fa1e5a5803ca087669f0e5c75cf970"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:Y77HOMNQV72K6H7P2Z7NO3DGQ7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Should bike sharing continue operating during the COVID-19 pandemic? Empirical findings from Nanjing, China","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":[],"primary_cat":"physics.soc-ph","authors_text":"Jingxu Chen, Long Cheng, Mingzhuang Hua, Xuewu Chen","submitted_at":"2020-12-05T04:39:42Z","abstract_excerpt":"Coronavirus disease 2019 (COVID-19) has triggered a worldwide outbreak of pandemic, and transportation services have played a key role in coronavirus transmission. Although not crowded in a confined space like a bus or a metro car, bike sharing users will be exposed to the bike surface and take the transmission risk. During the COVID-19 pandemic, how to meet user demand and avoid virus spreading has become an important issue for bike sharing. Based on the trip data of bike sharing in Nanjing, China, this study analyzes the travel demand and operation management before and after the pandemic ou"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2012.02946","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/2012.02946/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":"2026-07-05T01:57:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BhC0OuqKV5Oy8nt+SHt86wVu0wzT5E9WHinbSBx+uvq2Le0y2BmhtHUqxKvvai5CctC0uAaq5PvOSpLLu8VMDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T18:05:03.862815Z"},"content_sha256":"bf86c3064c9f0e52bc0b8d6a922b8c9162e11d2a0bd4d852edef600c41bd55ea","schema_version":"1.0","event_id":"sha256:bf86c3064c9f0e52bc0b8d6a922b8c9162e11d2a0bd4d852edef600c41bd55ea"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Y77HOMNQV72K6H7P2Z7NO3DGQ7/bundle.json","state_url":"https://pith.science/pith/Y77HOMNQV72K6H7P2Z7NO3DGQ7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Y77HOMNQV72K6H7P2Z7NO3DGQ7/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":"2026-08-15T18:05:03Z","links":{"resolver":"https://pith.science/pith/Y77HOMNQV72K6H7P2Z7NO3DGQ7","bundle":"https://pith.science/pith/Y77HOMNQV72K6H7P2Z7NO3DGQ7/bundle.json","state":"https://pith.science/pith/Y77HOMNQV72K6H7P2Z7NO3DGQ7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Y77HOMNQV72K6H7P2Z7NO3DGQ7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:Y77HOMNQV72K6H7P2Z7NO3DGQ7","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":"22d5f0816eda0c86d26ef095a77df2da4338ce0bfef4c342e5bbefc6246bb289","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"physics.soc-ph","submitted_at":"2020-12-05T04:39:42Z","title_canon_sha256":"0e3cd7d1d7a080ad63a402430b9413f92087e2c459853d6bb3dfe139663bbb02"},"schema_version":"1.0","source":{"id":"2012.02946","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2012.02946","created_at":"2026-07-05T01:57:24Z"},{"alias_kind":"arxiv_version","alias_value":"2012.02946v1","created_at":"2026-07-05T01:57:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2012.02946","created_at":"2026-07-05T01:57:24Z"},{"alias_kind":"pith_short_12","alias_value":"Y77HOMNQV72K","created_at":"2026-07-05T01:57:24Z"},{"alias_kind":"pith_short_16","alias_value":"Y77HOMNQV72K6H7P","created_at":"2026-07-05T01:57:24Z"},{"alias_kind":"pith_short_8","alias_value":"Y77HOMNQ","created_at":"2026-07-05T01:57:24Z"}],"graph_snapshots":[{"event_id":"sha256:bf86c3064c9f0e52bc0b8d6a922b8c9162e11d2a0bd4d852edef600c41bd55ea","target":"graph","created_at":"2026-07-05T01:57:24Z","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/2012.02946/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Coronavirus disease 2019 (COVID-19) has triggered a worldwide outbreak of pandemic, and transportation services have played a key role in coronavirus transmission. Although not crowded in a confined space like a bus or a metro car, bike sharing users will be exposed to the bike surface and take the transmission risk. During the COVID-19 pandemic, how to meet user demand and avoid virus spreading has become an important issue for bike sharing. Based on the trip data of bike sharing in Nanjing, China, this study analyzes the travel demand and operation management before and after the pandemic ou","authors_text":"Jingxu Chen, Long Cheng, Mingzhuang Hua, Xuewu Chen","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"physics.soc-ph","submitted_at":"2020-12-05T04:39:42Z","title":"Should bike sharing continue operating during the COVID-19 pandemic? Empirical findings from Nanjing, China"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2012.02946","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":"sha256:53cba8575339959d6c7ed9fd9931609123fa1e5a5803ca087669f0e5c75cf970","target":"record","created_at":"2026-07-05T01:57:24Z","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":"22d5f0816eda0c86d26ef095a77df2da4338ce0bfef4c342e5bbefc6246bb289","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"physics.soc-ph","submitted_at":"2020-12-05T04:39:42Z","title_canon_sha256":"0e3cd7d1d7a080ad63a402430b9413f92087e2c459853d6bb3dfe139663bbb02"},"schema_version":"1.0","source":{"id":"2012.02946","kind":"arxiv","version":1}},"canonical_sha256":"c7fe7731b0aff4af1fefd67ed76c6687ccddc8fc70a861ddf27985dd83e03dc0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c7fe7731b0aff4af1fefd67ed76c6687ccddc8fc70a861ddf27985dd83e03dc0","first_computed_at":"2026-07-05T01:57:24.059580Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:57:24.059580Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"X5DvsORQv1Tom9BTNFjZcT7I13glFKHA4AUnKSpnkpzhf4dbWLm48rMGYx6ozfBK2dbVMoCqKERUrFnyks35Dg==","signature_status":"signed_v1","signed_at":"2026-07-05T01:57:24.059927Z","signed_message":"canonical_sha256_bytes"},"source_id":"2012.02946","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:53cba8575339959d6c7ed9fd9931609123fa1e5a5803ca087669f0e5c75cf970","sha256:bf86c3064c9f0e52bc0b8d6a922b8c9162e11d2a0bd4d852edef600c41bd55ea"],"state_sha256":"74523ab45f9bbd5845b3b0e5b88f0927cf97b19618f97149b48d921a9a3dc133"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lp5hDVX76LrsNNB/LB3zc2PKVQmNFDk7kV8v/eXND6NNDS/MqqPQQGFZupJtX8tC45eCTEPRlD+MjCuBhs54Cw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-15T18:05:03.867132Z","bundle_sha256":"933a71b8320a305e7d7559cfd3546d8076bae05c5b5d2630d6a5606738aa2e94"}}