{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:OI7NE3OCSWGFA7MD4Q4MQR4TVQ","short_pith_number":"pith:OI7NE3OC","canonical_record":{"source":{"id":"1407.5732","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2014-07-22T05:25:53Z","cross_cats_sorted":[],"title_canon_sha256":"fcbf476ee51189e3b1362524e4a87531058d1bfaacfec55f4596e0f6317c3d6e","abstract_canon_sha256":"f16183a2b3e1ae5fbd6e7cdba0e191b314b607b106028a9ede89b7defc0169bd"},"schema_version":"1.0"},"canonical_sha256":"723ed26dc2958c507d83e438c84793ac3bec78ab719f9ef14e99c94e86cc771a","source":{"kind":"arxiv","id":"1407.5732","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1407.5732","created_at":"2026-05-18T02:47:06Z"},{"alias_kind":"arxiv_version","alias_value":"1407.5732v1","created_at":"2026-05-18T02:47:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1407.5732","created_at":"2026-05-18T02:47:06Z"},{"alias_kind":"pith_short_12","alias_value":"OI7NE3OCSWGF","created_at":"2026-05-18T12:28:41Z"},{"alias_kind":"pith_short_16","alias_value":"OI7NE3OCSWGFA7MD","created_at":"2026-05-18T12:28:41Z"},{"alias_kind":"pith_short_8","alias_value":"OI7NE3OC","created_at":"2026-05-18T12:28:41Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:OI7NE3OCSWGFA7MD4Q4MQR4TVQ","target":"record","payload":{"canonical_record":{"source":{"id":"1407.5732","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2014-07-22T05:25:53Z","cross_cats_sorted":[],"title_canon_sha256":"fcbf476ee51189e3b1362524e4a87531058d1bfaacfec55f4596e0f6317c3d6e","abstract_canon_sha256":"f16183a2b3e1ae5fbd6e7cdba0e191b314b607b106028a9ede89b7defc0169bd"},"schema_version":"1.0"},"canonical_sha256":"723ed26dc2958c507d83e438c84793ac3bec78ab719f9ef14e99c94e86cc771a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:47:06.754646Z","signature_b64":"ZT4ad8+zFS9f2Pfm6K2VTsX6hsKZzb92TBBbeuTggxAX0lAlu+k5Cc/jJz/fL+bVKOg9KSpxJd/yMYtIKIIPDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"723ed26dc2958c507d83e438c84793ac3bec78ab719f9ef14e99c94e86cc771a","last_reissued_at":"2026-05-18T02:47:06.754292Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:47:06.754292Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1407.5732","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":"2026-05-18T02:47:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+wI7yoJaDAOm5HbzCTia2VxNfFYArLN26lZEb8gVJt0olMCqd0K6i9djoKF2A9sFCoswwcWhG8UGxRk6TevOAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-02T00:09:47.279899Z"},"content_sha256":"59d5b60892c79a41432b98f1e600902318d282de8c78b61b44b95ba3f169bc99","schema_version":"1.0","event_id":"sha256:59d5b60892c79a41432b98f1e600902318d282de8c78b61b44b95ba3f169bc99"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:OI7NE3OCSWGFA7MD4Q4MQR4TVQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Comparative Study of Hidden Web Crawlers","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.IR","authors_text":"Komal Kumar Bhatia, Sonali Gupta","submitted_at":"2014-07-22T05:25:53Z","abstract_excerpt":"A large amount of data on the WWW remains inaccessible to crawlers of Web search engines because it can only be exposed on demand as users fill out and submit forms. The Hidden web refers to the collection of Web data which can be accessed by the crawler only through an interaction with the Web-based search form and not simply by traversing hyperlinks. Research on Hidden Web has emerged almost a decade ago with the main line being exploring ways to access the content in online databases that are usually hidden behind search forms. The efforts in the area mainly focus on designing hidden Web cr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1407.5732","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":"2026-05-18T02:47:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GD6c38ky3Jd204eGK5ad3+t2mIhFDagSnmFm0SOC2+zkPHR0mKCvRgpqf1IyhF3K1zRnnp79uDf9pmZJwYdwAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-02T00:09:47.280246Z"},"content_sha256":"5a60090df10c1c0d0d7b93082244f09805d4eef18f0ee5869d6af65a1bcdc07c","schema_version":"1.0","event_id":"sha256:5a60090df10c1c0d0d7b93082244f09805d4eef18f0ee5869d6af65a1bcdc07c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OI7NE3OCSWGFA7MD4Q4MQR4TVQ/bundle.json","state_url":"https://pith.science/pith/OI7NE3OCSWGFA7MD4Q4MQR4TVQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OI7NE3OCSWGFA7MD4Q4MQR4TVQ/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":"2026-07-02T00:09:47Z","links":{"resolver":"https://pith.science/pith/OI7NE3OCSWGFA7MD4Q4MQR4TVQ","bundle":"https://pith.science/pith/OI7NE3OCSWGFA7MD4Q4MQR4TVQ/bundle.json","state":"https://pith.science/pith/OI7NE3OCSWGFA7MD4Q4MQR4TVQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OI7NE3OCSWGFA7MD4Q4MQR4TVQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:OI7NE3OCSWGFA7MD4Q4MQR4TVQ","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":"f16183a2b3e1ae5fbd6e7cdba0e191b314b607b106028a9ede89b7defc0169bd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2014-07-22T05:25:53Z","title_canon_sha256":"fcbf476ee51189e3b1362524e4a87531058d1bfaacfec55f4596e0f6317c3d6e"},"schema_version":"1.0","source":{"id":"1407.5732","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1407.5732","created_at":"2026-05-18T02:47:06Z"},{"alias_kind":"arxiv_version","alias_value":"1407.5732v1","created_at":"2026-05-18T02:47:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1407.5732","created_at":"2026-05-18T02:47:06Z"},{"alias_kind":"pith_short_12","alias_value":"OI7NE3OCSWGF","created_at":"2026-05-18T12:28:41Z"},{"alias_kind":"pith_short_16","alias_value":"OI7NE3OCSWGFA7MD","created_at":"2026-05-18T12:28:41Z"},{"alias_kind":"pith_short_8","alias_value":"OI7NE3OC","created_at":"2026-05-18T12:28:41Z"}],"graph_snapshots":[{"event_id":"sha256:5a60090df10c1c0d0d7b93082244f09805d4eef18f0ee5869d6af65a1bcdc07c","target":"graph","created_at":"2026-05-18T02:47:06Z","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":"A large amount of data on the WWW remains inaccessible to crawlers of Web search engines because it can only be exposed on demand as users fill out and submit forms. The Hidden web refers to the collection of Web data which can be accessed by the crawler only through an interaction with the Web-based search form and not simply by traversing hyperlinks. Research on Hidden Web has emerged almost a decade ago with the main line being exploring ways to access the content in online databases that are usually hidden behind search forms. The efforts in the area mainly focus on designing hidden Web cr","authors_text":"Komal Kumar Bhatia, Sonali Gupta","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2014-07-22T05:25:53Z","title":"A Comparative Study of Hidden Web Crawlers"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1407.5732","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":"sha256:59d5b60892c79a41432b98f1e600902318d282de8c78b61b44b95ba3f169bc99","target":"record","created_at":"2026-05-18T02:47:06Z","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":"f16183a2b3e1ae5fbd6e7cdba0e191b314b607b106028a9ede89b7defc0169bd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IR","submitted_at":"2014-07-22T05:25:53Z","title_canon_sha256":"fcbf476ee51189e3b1362524e4a87531058d1bfaacfec55f4596e0f6317c3d6e"},"schema_version":"1.0","source":{"id":"1407.5732","kind":"arxiv","version":1}},"canonical_sha256":"723ed26dc2958c507d83e438c84793ac3bec78ab719f9ef14e99c94e86cc771a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"723ed26dc2958c507d83e438c84793ac3bec78ab719f9ef14e99c94e86cc771a","first_computed_at":"2026-05-18T02:47:06.754292Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:47:06.754292Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ZT4ad8+zFS9f2Pfm6K2VTsX6hsKZzb92TBBbeuTggxAX0lAlu+k5Cc/jJz/fL+bVKOg9KSpxJd/yMYtIKIIPDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:47:06.754646Z","signed_message":"canonical_sha256_bytes"},"source_id":"1407.5732","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:59d5b60892c79a41432b98f1e600902318d282de8c78b61b44b95ba3f169bc99","sha256:5a60090df10c1c0d0d7b93082244f09805d4eef18f0ee5869d6af65a1bcdc07c"],"state_sha256":"0522e5c7a3cf66bd6aead0ccfc4481328c47cd5520e6c8144beabd185c96aa77"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WPPYfdg6JblxpaFuVW/LDFSeiY329Pn86jJ4n6ezckrAzBFrdN9o5NMjjjjwl8kVl3Qq0iAiKhyVF3aJduV7Ag==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-02T00:09:47.282842Z","bundle_sha256":"a3145312d67a28915af3030d32176175043c0ff7d7bb7bd75f4c3261c21bd90c"}}