{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:3PDJUOFDJICCNQRGMI6MLL7J2I","short_pith_number":"pith:3PDJUOFD","canonical_record":{"source":{"id":"1704.01422","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CY","submitted_at":"2017-04-05T13:41:22Z","cross_cats_sorted":[],"title_canon_sha256":"874ce6aeb5ca82863dd60b5b6462a35143b8ba4be422551b933c51b59d90fd4a","abstract_canon_sha256":"c742f6dfb8233082b8c31ad796dabf9a39968396dc2bb28c8b9f37a88ffe0c1f"},"schema_version":"1.0"},"canonical_sha256":"dbc69a38a34a0426c226623cc5afe9d20a1901a8957905ed03ed41fa461ca628","source":{"kind":"arxiv","id":"1704.01422","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1704.01422","created_at":"2026-05-18T00:46:58Z"},{"alias_kind":"arxiv_version","alias_value":"1704.01422v1","created_at":"2026-05-18T00:46:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1704.01422","created_at":"2026-05-18T00:46:58Z"},{"alias_kind":"pith_short_12","alias_value":"3PDJUOFDJICC","created_at":"2026-05-18T12:30:58Z"},{"alias_kind":"pith_short_16","alias_value":"3PDJUOFDJICCNQRG","created_at":"2026-05-18T12:30:58Z"},{"alias_kind":"pith_short_8","alias_value":"3PDJUOFD","created_at":"2026-05-18T12:30:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:3PDJUOFDJICCNQRGMI6MLL7J2I","target":"record","payload":{"canonical_record":{"source":{"id":"1704.01422","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CY","submitted_at":"2017-04-05T13:41:22Z","cross_cats_sorted":[],"title_canon_sha256":"874ce6aeb5ca82863dd60b5b6462a35143b8ba4be422551b933c51b59d90fd4a","abstract_canon_sha256":"c742f6dfb8233082b8c31ad796dabf9a39968396dc2bb28c8b9f37a88ffe0c1f"},"schema_version":"1.0"},"canonical_sha256":"dbc69a38a34a0426c226623cc5afe9d20a1901a8957905ed03ed41fa461ca628","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:46:58.207274Z","signature_b64":"A5jcrBqm+u4086t2O362LKoW9PtpIPbRU5B6FG3Do0V9JrYWh0i2QO2KAmx6e4nuWF40AoQJopTu7RU3kw0mAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"dbc69a38a34a0426c226623cc5afe9d20a1901a8957905ed03ed41fa461ca628","last_reissued_at":"2026-05-18T00:46:58.206677Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:46:58.206677Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1704.01422","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":"2026-05-18T00:46:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VHQoiCLd8pSWw3NSp2qGZOuknHmIGgbQwex0wnVRo99zLX4NTXOUOB0wtfRB+/Lgo3OknwIq00TZJ+rQjtrrAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T03:35:41.178889Z"},"content_sha256":"da1f59a0b0e2207766624f45d94e3ea7997e69df5d2609e93e9a5291ab36b24e","schema_version":"1.0","event_id":"sha256:da1f59a0b0e2207766624f45d94e3ea7997e69df5d2609e93e9a5291ab36b24e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:3PDJUOFDJICCNQRGMI6MLL7J2I","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Data-driven Approach to Measuring the Level of Press Freedom Using Media Attention Diversity from Unfiltered News","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.CY","authors_text":"Haewoon Kwak, Jisun An","submitted_at":"2017-04-05T13:41:22Z","abstract_excerpt":"Published by Reporters Without Borders every year, the Press Freedom Index (PFI) reflects the fear and tension in the newsroom pushed by the government and private sectors. While the PFI is invaluable in monitoring media environments worldwide, the current survey-based method has inherent limitations to updates in terms of cost and time. In this work, we introduce an alternative way to measure the level of press freedom using media attention diversity compiled from Unfiltered News."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1704.01422","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":"2026-05-18T00:46:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/WSy4dqNf8Ad9z/lKRTqtsoMgwQokk+k8qUwLgwZr8iLM41AAGU1srcY9n0HA0r0hvxqY4JCnt7bI/RVhEn+BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T03:35:41.179227Z"},"content_sha256":"24962faac5c1dd310812e04384b93e8915c95c82e5a27d21126fb27e6c813cd8","schema_version":"1.0","event_id":"sha256:24962faac5c1dd310812e04384b93e8915c95c82e5a27d21126fb27e6c813cd8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3PDJUOFDJICCNQRGMI6MLL7J2I/bundle.json","state_url":"https://pith.science/pith/3PDJUOFDJICCNQRGMI6MLL7J2I/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3PDJUOFDJICCNQRGMI6MLL7J2I/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":"2026-06-03T03:35:41Z","links":{"resolver":"https://pith.science/pith/3PDJUOFDJICCNQRGMI6MLL7J2I","bundle":"https://pith.science/pith/3PDJUOFDJICCNQRGMI6MLL7J2I/bundle.json","state":"https://pith.science/pith/3PDJUOFDJICCNQRGMI6MLL7J2I/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3PDJUOFDJICCNQRGMI6MLL7J2I/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:3PDJUOFDJICCNQRGMI6MLL7J2I","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":"c742f6dfb8233082b8c31ad796dabf9a39968396dc2bb28c8b9f37a88ffe0c1f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CY","submitted_at":"2017-04-05T13:41:22Z","title_canon_sha256":"874ce6aeb5ca82863dd60b5b6462a35143b8ba4be422551b933c51b59d90fd4a"},"schema_version":"1.0","source":{"id":"1704.01422","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1704.01422","created_at":"2026-05-18T00:46:58Z"},{"alias_kind":"arxiv_version","alias_value":"1704.01422v1","created_at":"2026-05-18T00:46:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1704.01422","created_at":"2026-05-18T00:46:58Z"},{"alias_kind":"pith_short_12","alias_value":"3PDJUOFDJICC","created_at":"2026-05-18T12:30:58Z"},{"alias_kind":"pith_short_16","alias_value":"3PDJUOFDJICCNQRG","created_at":"2026-05-18T12:30:58Z"},{"alias_kind":"pith_short_8","alias_value":"3PDJUOFD","created_at":"2026-05-18T12:30:58Z"}],"graph_snapshots":[{"event_id":"sha256:24962faac5c1dd310812e04384b93e8915c95c82e5a27d21126fb27e6c813cd8","target":"graph","created_at":"2026-05-18T00:46:58Z","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":"Published by Reporters Without Borders every year, the Press Freedom Index (PFI) reflects the fear and tension in the newsroom pushed by the government and private sectors. While the PFI is invaluable in monitoring media environments worldwide, the current survey-based method has inherent limitations to updates in terms of cost and time. In this work, we introduce an alternative way to measure the level of press freedom using media attention diversity compiled from Unfiltered News.","authors_text":"Haewoon Kwak, Jisun An","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CY","submitted_at":"2017-04-05T13:41:22Z","title":"Data-driven Approach to Measuring the Level of Press Freedom Using Media Attention Diversity from Unfiltered News"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1704.01422","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:da1f59a0b0e2207766624f45d94e3ea7997e69df5d2609e93e9a5291ab36b24e","target":"record","created_at":"2026-05-18T00:46:58Z","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":"c742f6dfb8233082b8c31ad796dabf9a39968396dc2bb28c8b9f37a88ffe0c1f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CY","submitted_at":"2017-04-05T13:41:22Z","title_canon_sha256":"874ce6aeb5ca82863dd60b5b6462a35143b8ba4be422551b933c51b59d90fd4a"},"schema_version":"1.0","source":{"id":"1704.01422","kind":"arxiv","version":1}},"canonical_sha256":"dbc69a38a34a0426c226623cc5afe9d20a1901a8957905ed03ed41fa461ca628","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"dbc69a38a34a0426c226623cc5afe9d20a1901a8957905ed03ed41fa461ca628","first_computed_at":"2026-05-18T00:46:58.206677Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:46:58.206677Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"A5jcrBqm+u4086t2O362LKoW9PtpIPbRU5B6FG3Do0V9JrYWh0i2QO2KAmx6e4nuWF40AoQJopTu7RU3kw0mAw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:46:58.207274Z","signed_message":"canonical_sha256_bytes"},"source_id":"1704.01422","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:da1f59a0b0e2207766624f45d94e3ea7997e69df5d2609e93e9a5291ab36b24e","sha256:24962faac5c1dd310812e04384b93e8915c95c82e5a27d21126fb27e6c813cd8"],"state_sha256":"5f5f8ae47790fcca2f084a3ebd9892a10a73a44f0708ebc00490d38ad17d408c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5HwJ9jimjcBarhWB0NID0vxk+F9mIq6Is1J+8mxmpPc18vlBxNA7UdjXxFtb5J/WzNXVrH1GAzVAPYacu0OZBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T03:35:41.181148Z","bundle_sha256":"0adb41d91fea6dfcdeb811d14eaa60a77bd1c1a912578fed375480e45cb86e01"}}