{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:ZPBD6XIGTUNCHPIAYWEGI6FHDJ","short_pith_number":"pith:ZPBD6XIG","canonical_record":{"source":{"id":"1307.7766","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2013-07-30T00:22:19Z","cross_cats_sorted":["cs.LO"],"title_canon_sha256":"877e934ba4b32158b7236a97ceb973b4706abdec1aa398be94905c9bedf498cd","abstract_canon_sha256":"fa167c33950e019adff859287ce1e9d06581577ed6c5e2abccbaf46082a62300"},"schema_version":"1.0"},"canonical_sha256":"cbc23f5d069d1a23bd00c5886478a71a77c37c7f765d5792dad0b323563326a2","source":{"kind":"arxiv","id":"1307.7766","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1307.7766","created_at":"2026-05-18T03:17:02Z"},{"alias_kind":"arxiv_version","alias_value":"1307.7766v2","created_at":"2026-05-18T03:17:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1307.7766","created_at":"2026-05-18T03:17:02Z"},{"alias_kind":"pith_short_12","alias_value":"ZPBD6XIGTUNC","created_at":"2026-05-18T12:28:09Z"},{"alias_kind":"pith_short_16","alias_value":"ZPBD6XIGTUNCHPIA","created_at":"2026-05-18T12:28:09Z"},{"alias_kind":"pith_short_8","alias_value":"ZPBD6XIG","created_at":"2026-05-18T12:28:09Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:ZPBD6XIGTUNCHPIAYWEGI6FHDJ","target":"record","payload":{"canonical_record":{"source":{"id":"1307.7766","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2013-07-30T00:22:19Z","cross_cats_sorted":["cs.LO"],"title_canon_sha256":"877e934ba4b32158b7236a97ceb973b4706abdec1aa398be94905c9bedf498cd","abstract_canon_sha256":"fa167c33950e019adff859287ce1e9d06581577ed6c5e2abccbaf46082a62300"},"schema_version":"1.0"},"canonical_sha256":"cbc23f5d069d1a23bd00c5886478a71a77c37c7f765d5792dad0b323563326a2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:17:02.537241Z","signature_b64":"oH8m9Uj67xUXP/jxN7Z0flbcgvOnWjmKQAH8fJnCITbOKpgJXePBctvcF3RTqz0VsUcVLSavzyOC6NnaphFRCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cbc23f5d069d1a23bd00c5886478a71a77c37c7f765d5792dad0b323563326a2","last_reissued_at":"2026-05-18T03:17:02.536506Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:17:02.536506Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1307.7766","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":"2026-05-18T03:17:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MRyXrYPoGfPsuaRnMizHs5OhKfbt+D4lnA2az0kOUdmLUMTczzGMXHoYHMxmhquDujWbFnlwGyuiD+T+MpUfBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-20T06:46:19.255914Z"},"content_sha256":"158215503acf43794cd7d9a82dc1f12779def31ea412e20e80fa241c7e3c9478","schema_version":"1.0","event_id":"sha256:158215503acf43794cd7d9a82dc1f12779def31ea412e20e80fa241c7e3c9478"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:ZPBD6XIGTUNCHPIAYWEGI6FHDJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Policy as Types","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.LO"],"primary_cat":"cs.CR","authors_text":"Lucius G Meredith, Mike Stay, Sophia Drossopoulou","submitted_at":"2013-07-30T00:22:19Z","abstract_excerpt":"Drossopoulou and Noble argue persuasively for the need for a means to express policy in object-capability-based systems. We investigate a practical means to realize their aim via the Curry-Howard isomorphism. Specifically, we investigate representing policy as types in a behavioral type system for the RHO-calculus, a reflective higher-order variant of the pi-calculus."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.7766","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":"2026-05-18T03:17:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GkSaBGgOzErDkMUKrQlawTkfDE6wW4/vibI7a2r8AVmm8MIyfr0xTFC4mJE0A8kl+l7sKREK1/wMzACNKYCaAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-20T06:46:19.256262Z"},"content_sha256":"71451555c6dc1eaeae4d30808ef2377e6ffabb0ca980747977adde2fad88e008","schema_version":"1.0","event_id":"sha256:71451555c6dc1eaeae4d30808ef2377e6ffabb0ca980747977adde2fad88e008"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZPBD6XIGTUNCHPIAYWEGI6FHDJ/bundle.json","state_url":"https://pith.science/pith/ZPBD6XIGTUNCHPIAYWEGI6FHDJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZPBD6XIGTUNCHPIAYWEGI6FHDJ/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":"2026-06-20T06:46:19Z","links":{"resolver":"https://pith.science/pith/ZPBD6XIGTUNCHPIAYWEGI6FHDJ","bundle":"https://pith.science/pith/ZPBD6XIGTUNCHPIAYWEGI6FHDJ/bundle.json","state":"https://pith.science/pith/ZPBD6XIGTUNCHPIAYWEGI6FHDJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZPBD6XIGTUNCHPIAYWEGI6FHDJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:ZPBD6XIGTUNCHPIAYWEGI6FHDJ","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":"fa167c33950e019adff859287ce1e9d06581577ed6c5e2abccbaf46082a62300","cross_cats_sorted":["cs.LO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2013-07-30T00:22:19Z","title_canon_sha256":"877e934ba4b32158b7236a97ceb973b4706abdec1aa398be94905c9bedf498cd"},"schema_version":"1.0","source":{"id":"1307.7766","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1307.7766","created_at":"2026-05-18T03:17:02Z"},{"alias_kind":"arxiv_version","alias_value":"1307.7766v2","created_at":"2026-05-18T03:17:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1307.7766","created_at":"2026-05-18T03:17:02Z"},{"alias_kind":"pith_short_12","alias_value":"ZPBD6XIGTUNC","created_at":"2026-05-18T12:28:09Z"},{"alias_kind":"pith_short_16","alias_value":"ZPBD6XIGTUNCHPIA","created_at":"2026-05-18T12:28:09Z"},{"alias_kind":"pith_short_8","alias_value":"ZPBD6XIG","created_at":"2026-05-18T12:28:09Z"}],"graph_snapshots":[{"event_id":"sha256:71451555c6dc1eaeae4d30808ef2377e6ffabb0ca980747977adde2fad88e008","target":"graph","created_at":"2026-05-18T03:17:02Z","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":"Drossopoulou and Noble argue persuasively for the need for a means to express policy in object-capability-based systems. We investigate a practical means to realize their aim via the Curry-Howard isomorphism. Specifically, we investigate representing policy as types in a behavioral type system for the RHO-calculus, a reflective higher-order variant of the pi-calculus.","authors_text":"Lucius G Meredith, Mike Stay, Sophia Drossopoulou","cross_cats":["cs.LO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2013-07-30T00:22:19Z","title":"Policy as Types"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.7766","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":"sha256:158215503acf43794cd7d9a82dc1f12779def31ea412e20e80fa241c7e3c9478","target":"record","created_at":"2026-05-18T03:17:02Z","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":"fa167c33950e019adff859287ce1e9d06581577ed6c5e2abccbaf46082a62300","cross_cats_sorted":["cs.LO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2013-07-30T00:22:19Z","title_canon_sha256":"877e934ba4b32158b7236a97ceb973b4706abdec1aa398be94905c9bedf498cd"},"schema_version":"1.0","source":{"id":"1307.7766","kind":"arxiv","version":2}},"canonical_sha256":"cbc23f5d069d1a23bd00c5886478a71a77c37c7f765d5792dad0b323563326a2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cbc23f5d069d1a23bd00c5886478a71a77c37c7f765d5792dad0b323563326a2","first_computed_at":"2026-05-18T03:17:02.536506Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:17:02.536506Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"oH8m9Uj67xUXP/jxN7Z0flbcgvOnWjmKQAH8fJnCITbOKpgJXePBctvcF3RTqz0VsUcVLSavzyOC6NnaphFRCA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:17:02.537241Z","signed_message":"canonical_sha256_bytes"},"source_id":"1307.7766","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:158215503acf43794cd7d9a82dc1f12779def31ea412e20e80fa241c7e3c9478","sha256:71451555c6dc1eaeae4d30808ef2377e6ffabb0ca980747977adde2fad88e008"],"state_sha256":"8d4286fd1a506bb42f9770cc082a2cc992f195d48ae6e0bff0609cbc0730b026"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"q1an7rvrL6QO2wWqukeILhWIVpddS3Pmsxf4jJBo6lPRn2Wm+BemehxQk79eLAMgJHPvzIFrEfA2gVrAyO5nAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-20T06:46:19.258019Z","bundle_sha256":"af5a6e63a0a914c347ef808ab838ad999d00737e27f12796f2f1336be9b3733a"}}