{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:D6VGRC2PPSB4YODFW4ODKWAEZP","short_pith_number":"pith:D6VGRC2P","canonical_record":{"source":{"id":"1804.03293","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.HC","submitted_at":"2018-04-10T01:12:51Z","cross_cats_sorted":[],"title_canon_sha256":"cf93751fab9290669d6d3d940bde98c45e5c4a6b76e7ab1ca7da3acbc0d79ee4","abstract_canon_sha256":"2d1a7594281777a5bdbc01a4cf30173e62efe8259ec47af2c33111a5c2603bf8"},"schema_version":"1.0"},"canonical_sha256":"1faa688b4f7c83cc3865b71c355804cbf84f2a0fe6a107290f9c49305dc1ee5f","source":{"kind":"arxiv","id":"1804.03293","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.03293","created_at":"2026-05-18T00:18:56Z"},{"alias_kind":"arxiv_version","alias_value":"1804.03293v1","created_at":"2026-05-18T00:18:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.03293","created_at":"2026-05-18T00:18:56Z"},{"alias_kind":"pith_short_12","alias_value":"D6VGRC2PPSB4","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_16","alias_value":"D6VGRC2PPSB4YODF","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_8","alias_value":"D6VGRC2P","created_at":"2026-05-18T12:32:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:D6VGRC2PPSB4YODFW4ODKWAEZP","target":"record","payload":{"canonical_record":{"source":{"id":"1804.03293","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.HC","submitted_at":"2018-04-10T01:12:51Z","cross_cats_sorted":[],"title_canon_sha256":"cf93751fab9290669d6d3d940bde98c45e5c4a6b76e7ab1ca7da3acbc0d79ee4","abstract_canon_sha256":"2d1a7594281777a5bdbc01a4cf30173e62efe8259ec47af2c33111a5c2603bf8"},"schema_version":"1.0"},"canonical_sha256":"1faa688b4f7c83cc3865b71c355804cbf84f2a0fe6a107290f9c49305dc1ee5f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:18:56.458724Z","signature_b64":"/ViY12XHd04KfvTnv1T1LdJnXmhUQT4EmHxrc1XScs08uvcpV1PIaWTsvnIsxfai12F1E9Kp+06TEA+VdMD4Bg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1faa688b4f7c83cc3865b71c355804cbf84f2a0fe6a107290f9c49305dc1ee5f","last_reissued_at":"2026-05-18T00:18:56.458061Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:18:56.458061Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1804.03293","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":"2026-05-18T00:18:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"q0N0MquTwhfksDpTI6XNb8Oc1zDzZ3Kyh8QNRm79pkt/O9fI+cIe5AmGqE11SlzCEZRSaqKGDYmGiEKC1jU6Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T05:50:24.367538Z"},"content_sha256":"a576259943ab96863c4cb0acb13d996374375d7e2841bbf80db293ee40d36d1a","schema_version":"1.0","event_id":"sha256:a576259943ab96863c4cb0acb13d996374375d7e2841bbf80db293ee40d36d1a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:D6VGRC2PPSB4YODFW4ODKWAEZP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Community-Empowered Air Quality Monitoring System","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.HC","authors_text":"Beatrice Dias, Illah Nourbakhsh, Jennifer Cross, Paul Dille, Randy Sargent, Yen-Chia Hsu","submitted_at":"2018-04-10T01:12:51Z","abstract_excerpt":"Developing information technology to democratize scientific knowledge and support citizen empowerment is a challenging task. In our case, a local community suffered from air pollution caused by industrial activity. The residents lacked the technological fluency to gather and curate diverse scientific data to advocate for regulatory change. We collaborated with the community in developing an air quality monitoring system which integrated heterogeneous data over a large spatial and temporal scale. The system afforded strong scientific evidence by using animated smoke images, air quality data, cr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.03293","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":""},"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":"2026-05-18T00:18:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PAVUmkqw6FxkauFgezQQW79H+ipWSAvkmQn/U5ymU6/QG7lho9Q+FH+W0kbn7IQ3U6FRbcIJ/G4fOhCW55Z6Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T05:50:24.368215Z"},"content_sha256":"29a4f8f323f594c652d1eae49dcc2b8ad5058216f0782767909b0d90717f8408","schema_version":"1.0","event_id":"sha256:29a4f8f323f594c652d1eae49dcc2b8ad5058216f0782767909b0d90717f8408"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/D6VGRC2PPSB4YODFW4ODKWAEZP/bundle.json","state_url":"https://pith.science/pith/D6VGRC2PPSB4YODFW4ODKWAEZP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/D6VGRC2PPSB4YODFW4ODKWAEZP/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":"2026-05-27T05:50:24Z","links":{"resolver":"https://pith.science/pith/D6VGRC2PPSB4YODFW4ODKWAEZP","bundle":"https://pith.science/pith/D6VGRC2PPSB4YODFW4ODKWAEZP/bundle.json","state":"https://pith.science/pith/D6VGRC2PPSB4YODFW4ODKWAEZP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/D6VGRC2PPSB4YODFW4ODKWAEZP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:D6VGRC2PPSB4YODFW4ODKWAEZP","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":"2d1a7594281777a5bdbc01a4cf30173e62efe8259ec47af2c33111a5c2603bf8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.HC","submitted_at":"2018-04-10T01:12:51Z","title_canon_sha256":"cf93751fab9290669d6d3d940bde98c45e5c4a6b76e7ab1ca7da3acbc0d79ee4"},"schema_version":"1.0","source":{"id":"1804.03293","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.03293","created_at":"2026-05-18T00:18:56Z"},{"alias_kind":"arxiv_version","alias_value":"1804.03293v1","created_at":"2026-05-18T00:18:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.03293","created_at":"2026-05-18T00:18:56Z"},{"alias_kind":"pith_short_12","alias_value":"D6VGRC2PPSB4","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_16","alias_value":"D6VGRC2PPSB4YODF","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_8","alias_value":"D6VGRC2P","created_at":"2026-05-18T12:32:19Z"}],"graph_snapshots":[{"event_id":"sha256:29a4f8f323f594c652d1eae49dcc2b8ad5058216f0782767909b0d90717f8408","target":"graph","created_at":"2026-05-18T00:18:56Z","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":"Developing information technology to democratize scientific knowledge and support citizen empowerment is a challenging task. In our case, a local community suffered from air pollution caused by industrial activity. The residents lacked the technological fluency to gather and curate diverse scientific data to advocate for regulatory change. We collaborated with the community in developing an air quality monitoring system which integrated heterogeneous data over a large spatial and temporal scale. The system afforded strong scientific evidence by using animated smoke images, air quality data, cr","authors_text":"Beatrice Dias, Illah Nourbakhsh, Jennifer Cross, Paul Dille, Randy Sargent, Yen-Chia Hsu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.HC","submitted_at":"2018-04-10T01:12:51Z","title":"Community-Empowered Air Quality Monitoring System"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.03293","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:a576259943ab96863c4cb0acb13d996374375d7e2841bbf80db293ee40d36d1a","target":"record","created_at":"2026-05-18T00:18:56Z","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":"2d1a7594281777a5bdbc01a4cf30173e62efe8259ec47af2c33111a5c2603bf8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.HC","submitted_at":"2018-04-10T01:12:51Z","title_canon_sha256":"cf93751fab9290669d6d3d940bde98c45e5c4a6b76e7ab1ca7da3acbc0d79ee4"},"schema_version":"1.0","source":{"id":"1804.03293","kind":"arxiv","version":1}},"canonical_sha256":"1faa688b4f7c83cc3865b71c355804cbf84f2a0fe6a107290f9c49305dc1ee5f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1faa688b4f7c83cc3865b71c355804cbf84f2a0fe6a107290f9c49305dc1ee5f","first_computed_at":"2026-05-18T00:18:56.458061Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:18:56.458061Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"/ViY12XHd04KfvTnv1T1LdJnXmhUQT4EmHxrc1XScs08uvcpV1PIaWTsvnIsxfai12F1E9Kp+06TEA+VdMD4Bg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:18:56.458724Z","signed_message":"canonical_sha256_bytes"},"source_id":"1804.03293","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a576259943ab96863c4cb0acb13d996374375d7e2841bbf80db293ee40d36d1a","sha256:29a4f8f323f594c652d1eae49dcc2b8ad5058216f0782767909b0d90717f8408"],"state_sha256":"fdbad5061566c97be32fe129f60fc4271dae6350c122127e3fd9d4bc65402234"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HX9hlaiciLCUdTIPNA4Ddv6zddYfz9G5gOJkrJgHtf+zWw1y/0Nl8yjOtWXlnA/NOWhy7K1W3YtyufpYPb17Cw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T05:50:24.371578Z","bundle_sha256":"5dd58f57948c5c85f9e9fc7b16a896bb60a07c2ac880caa7b7d0897990572142"}}