{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:JCZ4C2HN4LRETQ4Y3Q23TU4OKD","short_pith_number":"pith:JCZ4C2HN","canonical_record":{"source":{"id":"1512.06961","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2015-12-22T05:51:28Z","cross_cats_sorted":["cs.CR","math.IT","math.PR"],"title_canon_sha256":"dd8b73a78ab10704ec9009b9d6c9ed3ba488d86f534c65f492c99047091b0de5","abstract_canon_sha256":"7825b942f611ccefca1ff9b4deb514cd2888de4864629473f7ee2c806e137155"},"schema_version":"1.0"},"canonical_sha256":"48b3c168ede2e249c398dc35b9d38e50fa6e0ff499a8304fa1049350246f053c","source":{"kind":"arxiv","id":"1512.06961","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1512.06961","created_at":"2026-05-18T01:23:53Z"},{"alias_kind":"arxiv_version","alias_value":"1512.06961v1","created_at":"2026-05-18T01:23:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1512.06961","created_at":"2026-05-18T01:23:53Z"},{"alias_kind":"pith_short_12","alias_value":"JCZ4C2HN4LRE","created_at":"2026-05-18T12:29:27Z"},{"alias_kind":"pith_short_16","alias_value":"JCZ4C2HN4LRETQ4Y","created_at":"2026-05-18T12:29:27Z"},{"alias_kind":"pith_short_8","alias_value":"JCZ4C2HN","created_at":"2026-05-18T12:29:27Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:JCZ4C2HN4LRETQ4Y3Q23TU4OKD","target":"record","payload":{"canonical_record":{"source":{"id":"1512.06961","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2015-12-22T05:51:28Z","cross_cats_sorted":["cs.CR","math.IT","math.PR"],"title_canon_sha256":"dd8b73a78ab10704ec9009b9d6c9ed3ba488d86f534c65f492c99047091b0de5","abstract_canon_sha256":"7825b942f611ccefca1ff9b4deb514cd2888de4864629473f7ee2c806e137155"},"schema_version":"1.0"},"canonical_sha256":"48b3c168ede2e249c398dc35b9d38e50fa6e0ff499a8304fa1049350246f053c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:23:53.310201Z","signature_b64":"2L+OlDWb/aUMtqpyzzejhIDnwf0LTD2cbEHaaN8f7eymjghov0fMybKeUeLG7iPIwzaxbVOBNtNGUzr/aKP/CQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"48b3c168ede2e249c398dc35b9d38e50fa6e0ff499a8304fa1049350246f053c","last_reissued_at":"2026-05-18T01:23:53.309275Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:23:53.309275Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1512.06961","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":"2026-05-18T01:23:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qppjy1PuJ7f1tLc6ti/CZwxZEytloiKKgsfLU2ofx6RXQXZyr/vu+0BP0T9oyZt1Qaxz2MmanU3u+rMEIBe3Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T13:52:52.483484Z"},"content_sha256":"6e1c6c6b15e875806ca2730d25dbe8defce375a2723a1c5b36e654d5364c3040","schema_version":"1.0","event_id":"sha256:6e1c6c6b15e875806ca2730d25dbe8defce375a2723a1c5b36e654d5364c3040"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:JCZ4C2HN4LRETQ4Y3Q23TU4OKD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Two-faced processes and random number generators","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.CR","math.IT","math.PR"],"primary_cat":"cs.IT","authors_text":"Boris Ryabko","submitted_at":"2015-12-22T05:51:28Z","abstract_excerpt":"We describe random processes (with binary alphabet) whose entropy is less than 1 (per letter), but they mimic true random process, i.e., by definition, generated sequence can be interpreted as the result of the flips of a fair coin with sides that are labeled 0 and 1. It gives a possibility to construct Random Number Generators which possess theoretical guarantees. This, in turn, is important for applications such as those in cryptography."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1512.06961","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":"2026-05-18T01:23:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HQkGN40OMrhmM1p6bO2RZ1tS7iBkTNWAi6/CLBR9o3cvgIH3iw0iPxRjUKwTe6WViAvyIFyclOLal6c7cHyQDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T13:52:52.484169Z"},"content_sha256":"cbc77522491a7cf6d2a74129b0582928c93fc3c03f2cf3c53eeeb39d90926cf6","schema_version":"1.0","event_id":"sha256:cbc77522491a7cf6d2a74129b0582928c93fc3c03f2cf3c53eeeb39d90926cf6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JCZ4C2HN4LRETQ4Y3Q23TU4OKD/bundle.json","state_url":"https://pith.science/pith/JCZ4C2HN4LRETQ4Y3Q23TU4OKD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JCZ4C2HN4LRETQ4Y3Q23TU4OKD/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":"2026-05-31T13:52:52Z","links":{"resolver":"https://pith.science/pith/JCZ4C2HN4LRETQ4Y3Q23TU4OKD","bundle":"https://pith.science/pith/JCZ4C2HN4LRETQ4Y3Q23TU4OKD/bundle.json","state":"https://pith.science/pith/JCZ4C2HN4LRETQ4Y3Q23TU4OKD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JCZ4C2HN4LRETQ4Y3Q23TU4OKD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:JCZ4C2HN4LRETQ4Y3Q23TU4OKD","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":"7825b942f611ccefca1ff9b4deb514cd2888de4864629473f7ee2c806e137155","cross_cats_sorted":["cs.CR","math.IT","math.PR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2015-12-22T05:51:28Z","title_canon_sha256":"dd8b73a78ab10704ec9009b9d6c9ed3ba488d86f534c65f492c99047091b0de5"},"schema_version":"1.0","source":{"id":"1512.06961","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1512.06961","created_at":"2026-05-18T01:23:53Z"},{"alias_kind":"arxiv_version","alias_value":"1512.06961v1","created_at":"2026-05-18T01:23:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1512.06961","created_at":"2026-05-18T01:23:53Z"},{"alias_kind":"pith_short_12","alias_value":"JCZ4C2HN4LRE","created_at":"2026-05-18T12:29:27Z"},{"alias_kind":"pith_short_16","alias_value":"JCZ4C2HN4LRETQ4Y","created_at":"2026-05-18T12:29:27Z"},{"alias_kind":"pith_short_8","alias_value":"JCZ4C2HN","created_at":"2026-05-18T12:29:27Z"}],"graph_snapshots":[{"event_id":"sha256:cbc77522491a7cf6d2a74129b0582928c93fc3c03f2cf3c53eeeb39d90926cf6","target":"graph","created_at":"2026-05-18T01:23:53Z","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":"We describe random processes (with binary alphabet) whose entropy is less than 1 (per letter), but they mimic true random process, i.e., by definition, generated sequence can be interpreted as the result of the flips of a fair coin with sides that are labeled 0 and 1. It gives a possibility to construct Random Number Generators which possess theoretical guarantees. This, in turn, is important for applications such as those in cryptography.","authors_text":"Boris Ryabko","cross_cats":["cs.CR","math.IT","math.PR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2015-12-22T05:51:28Z","title":"Two-faced processes and random number generators"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1512.06961","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":"sha256:6e1c6c6b15e875806ca2730d25dbe8defce375a2723a1c5b36e654d5364c3040","target":"record","created_at":"2026-05-18T01:23:53Z","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":"7825b942f611ccefca1ff9b4deb514cd2888de4864629473f7ee2c806e137155","cross_cats_sorted":["cs.CR","math.IT","math.PR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2015-12-22T05:51:28Z","title_canon_sha256":"dd8b73a78ab10704ec9009b9d6c9ed3ba488d86f534c65f492c99047091b0de5"},"schema_version":"1.0","source":{"id":"1512.06961","kind":"arxiv","version":1}},"canonical_sha256":"48b3c168ede2e249c398dc35b9d38e50fa6e0ff499a8304fa1049350246f053c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"48b3c168ede2e249c398dc35b9d38e50fa6e0ff499a8304fa1049350246f053c","first_computed_at":"2026-05-18T01:23:53.309275Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:23:53.309275Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"2L+OlDWb/aUMtqpyzzejhIDnwf0LTD2cbEHaaN8f7eymjghov0fMybKeUeLG7iPIwzaxbVOBNtNGUzr/aKP/CQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:23:53.310201Z","signed_message":"canonical_sha256_bytes"},"source_id":"1512.06961","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6e1c6c6b15e875806ca2730d25dbe8defce375a2723a1c5b36e654d5364c3040","sha256:cbc77522491a7cf6d2a74129b0582928c93fc3c03f2cf3c53eeeb39d90926cf6"],"state_sha256":"f1bbf3c7409d8a71136ea37e8d52559a03e50d9d617d95315da094f85d126d6e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KMk+TqfEvDcXxr9wcRRhyBK7uKsXYcoCHGQ80GvMc/0gbCc+V2m3Uord37fvH8F2klQFdcgmqibsrrpWFLrNBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T13:52:52.487621Z","bundle_sha256":"bf9044da6e4dbb16d79e6e02c3ec403823dfb80e6c93840368cfe88781a54261"}}