{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:XVBQFRYIJ4VBMZUGS46R3IWPJJ","short_pith_number":"pith:XVBQFRYI","canonical_record":{"source":{"id":"1606.01979","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NI","submitted_at":"2016-06-07T00:09:39Z","cross_cats_sorted":["cs.CY"],"title_canon_sha256":"a5204b3d032eb92513ec3b7c9c37ba8aea8c58f059bd81b2ed1b129283745408","abstract_canon_sha256":"298e5712f868fc4b5c5180e27469ca505a676699be341afb939ca6443c8cbf16"},"schema_version":"1.0"},"canonical_sha256":"bd4302c7084f2a166686973d1da2cf4a70e50272550c428b5c986ee500d58f6a","source":{"kind":"arxiv","id":"1606.01979","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1606.01979","created_at":"2026-05-18T01:00:52Z"},{"alias_kind":"arxiv_version","alias_value":"1606.01979v2","created_at":"2026-05-18T01:00:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1606.01979","created_at":"2026-05-18T01:00:52Z"},{"alias_kind":"pith_short_12","alias_value":"XVBQFRYIJ4VB","created_at":"2026-05-18T12:30:51Z"},{"alias_kind":"pith_short_16","alias_value":"XVBQFRYIJ4VBMZUG","created_at":"2026-05-18T12:30:51Z"},{"alias_kind":"pith_short_8","alias_value":"XVBQFRYI","created_at":"2026-05-18T12:30:51Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:XVBQFRYIJ4VBMZUGS46R3IWPJJ","target":"record","payload":{"canonical_record":{"source":{"id":"1606.01979","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NI","submitted_at":"2016-06-07T00:09:39Z","cross_cats_sorted":["cs.CY"],"title_canon_sha256":"a5204b3d032eb92513ec3b7c9c37ba8aea8c58f059bd81b2ed1b129283745408","abstract_canon_sha256":"298e5712f868fc4b5c5180e27469ca505a676699be341afb939ca6443c8cbf16"},"schema_version":"1.0"},"canonical_sha256":"bd4302c7084f2a166686973d1da2cf4a70e50272550c428b5c986ee500d58f6a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:00:52.928945Z","signature_b64":"kJJj/sE378Kt7oKRyE93jzHEPrrIpmhmGJeW+FU7nHHay1S+9ZnMhQm3gpID/svkAbFxrnnGkwvLxt7jh5F5Dg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bd4302c7084f2a166686973d1da2cf4a70e50272550c428b5c986ee500d58f6a","last_reissued_at":"2026-05-18T01:00:52.928462Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:00:52.928462Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1606.01979","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":"2026-05-18T01:00:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZYdFd5fJ3OGbKrR3tjNDXvYwgM+tC30YAauePQ5CoUBh/bPrUk8e8L4X985z8rLX3Jba0HIg/M4gzx3uPpGaBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T05:12:03.322342Z"},"content_sha256":"6d7ff6f204251c5c1c4f2216294cb67b48e68fc7bf0a00c173280dcc60029c92","schema_version":"1.0","event_id":"sha256:6d7ff6f204251c5c1c4f2216294cb67b48e68fc7bf0a00c173280dcc60029c92"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:XVBQFRYIJ4VBMZUGS46R3IWPJJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Exploring the Design Space of Longitudinal Censorship Measurement Platforms","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.CY"],"primary_cat":"cs.NI","authors_text":"Abbas Razaghpanah, Anke Li, Arturo Filast\\`o, Phillipa Gill, Rishab Nithyanand, Vasilis Ververis, Will Scott","submitted_at":"2016-06-07T00:09:39Z","abstract_excerpt":"Despite the high perceived value and increasing severity of online information controls, a data-driven understanding of the phenomenon has remained elusive. In this paper, we consider two design points in the space of Internet censorship measurement with particular emphasis on how they address the challenges of locating vantage points, choosing content to test, and analyzing results. We discuss the trade offs of decisions made by each platform and show how the resulting data provides complementary views of global censorship. Finally, we discuss lessons learned and open challenges discovered th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1606.01979","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":""},"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":"2026-05-18T01:00:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LY6T5QxlpYR6lUsjg1Z4xHoPDrPlwL2xmYkgAw31DeU1HlcuTRR2WojfQGjF8Qmp7e4dA7AJ94gY2+fnRga0CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T05:12:03.322789Z"},"content_sha256":"974782e047acba2948e2d8ee057c11bf326d74bf1ed210eb7bdb8020dce03ff3","schema_version":"1.0","event_id":"sha256:974782e047acba2948e2d8ee057c11bf326d74bf1ed210eb7bdb8020dce03ff3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XVBQFRYIJ4VBMZUGS46R3IWPJJ/bundle.json","state_url":"https://pith.science/pith/XVBQFRYIJ4VBMZUGS46R3IWPJJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XVBQFRYIJ4VBMZUGS46R3IWPJJ/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":"2026-06-02T05:12:03Z","links":{"resolver":"https://pith.science/pith/XVBQFRYIJ4VBMZUGS46R3IWPJJ","bundle":"https://pith.science/pith/XVBQFRYIJ4VBMZUGS46R3IWPJJ/bundle.json","state":"https://pith.science/pith/XVBQFRYIJ4VBMZUGS46R3IWPJJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XVBQFRYIJ4VBMZUGS46R3IWPJJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:XVBQFRYIJ4VBMZUGS46R3IWPJJ","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":"298e5712f868fc4b5c5180e27469ca505a676699be341afb939ca6443c8cbf16","cross_cats_sorted":["cs.CY"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NI","submitted_at":"2016-06-07T00:09:39Z","title_canon_sha256":"a5204b3d032eb92513ec3b7c9c37ba8aea8c58f059bd81b2ed1b129283745408"},"schema_version":"1.0","source":{"id":"1606.01979","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1606.01979","created_at":"2026-05-18T01:00:52Z"},{"alias_kind":"arxiv_version","alias_value":"1606.01979v2","created_at":"2026-05-18T01:00:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1606.01979","created_at":"2026-05-18T01:00:52Z"},{"alias_kind":"pith_short_12","alias_value":"XVBQFRYIJ4VB","created_at":"2026-05-18T12:30:51Z"},{"alias_kind":"pith_short_16","alias_value":"XVBQFRYIJ4VBMZUG","created_at":"2026-05-18T12:30:51Z"},{"alias_kind":"pith_short_8","alias_value":"XVBQFRYI","created_at":"2026-05-18T12:30:51Z"}],"graph_snapshots":[{"event_id":"sha256:974782e047acba2948e2d8ee057c11bf326d74bf1ed210eb7bdb8020dce03ff3","target":"graph","created_at":"2026-05-18T01:00:52Z","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":"Despite the high perceived value and increasing severity of online information controls, a data-driven understanding of the phenomenon has remained elusive. In this paper, we consider two design points in the space of Internet censorship measurement with particular emphasis on how they address the challenges of locating vantage points, choosing content to test, and analyzing results. We discuss the trade offs of decisions made by each platform and show how the resulting data provides complementary views of global censorship. Finally, we discuss lessons learned and open challenges discovered th","authors_text":"Abbas Razaghpanah, Anke Li, Arturo Filast\\`o, Phillipa Gill, Rishab Nithyanand, Vasilis Ververis, Will Scott","cross_cats":["cs.CY"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NI","submitted_at":"2016-06-07T00:09:39Z","title":"Exploring the Design Space of Longitudinal Censorship Measurement Platforms"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1606.01979","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":"sha256:6d7ff6f204251c5c1c4f2216294cb67b48e68fc7bf0a00c173280dcc60029c92","target":"record","created_at":"2026-05-18T01:00:52Z","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":"298e5712f868fc4b5c5180e27469ca505a676699be341afb939ca6443c8cbf16","cross_cats_sorted":["cs.CY"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NI","submitted_at":"2016-06-07T00:09:39Z","title_canon_sha256":"a5204b3d032eb92513ec3b7c9c37ba8aea8c58f059bd81b2ed1b129283745408"},"schema_version":"1.0","source":{"id":"1606.01979","kind":"arxiv","version":2}},"canonical_sha256":"bd4302c7084f2a166686973d1da2cf4a70e50272550c428b5c986ee500d58f6a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bd4302c7084f2a166686973d1da2cf4a70e50272550c428b5c986ee500d58f6a","first_computed_at":"2026-05-18T01:00:52.928462Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:00:52.928462Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"kJJj/sE378Kt7oKRyE93jzHEPrrIpmhmGJeW+FU7nHHay1S+9ZnMhQm3gpID/svkAbFxrnnGkwvLxt7jh5F5Dg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:00:52.928945Z","signed_message":"canonical_sha256_bytes"},"source_id":"1606.01979","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6d7ff6f204251c5c1c4f2216294cb67b48e68fc7bf0a00c173280dcc60029c92","sha256:974782e047acba2948e2d8ee057c11bf326d74bf1ed210eb7bdb8020dce03ff3"],"state_sha256":"07f10a1c23e6a245390e21b01c054814451689d2edf224158b4cebd1ba8fdc67"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jwI7PfPxCUooh+uUNIzzk8LVgE1POaBtRgKQWvpg2hRER6EBiqmfnpNcsXC4nyNwkcFYAJDsrZygDGkXm3erAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T05:12:03.324999Z","bundle_sha256":"33004944efb040dc0d20c5188cd3f6e6a7354396682b51b23ab3ae87b5418b7e"}}