{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:E6LUAL46JXDG3ANPVDGTLH5QPX","short_pith_number":"pith:E6LUAL46","canonical_record":{"source":{"id":"2407.05506","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2024-07-07T22:12:59Z","cross_cats_sorted":[],"title_canon_sha256":"cc3eb72fa4f78f5c6a5ef5d1cbe0a803b2b6f3563aadb964281431e827528e7c","abstract_canon_sha256":"03a5c32e39a79bf06f22661254fd7cdaae8823d8b918fba693a8996910ba74d1"},"schema_version":"1.0"},"canonical_sha256":"2797402f9e4dc66d81afa8cd359fb07dda36ddb36be736abb7a159e3394e408d","source":{"kind":"arxiv","id":"2407.05506","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2407.05506","created_at":"2026-07-05T08:42:55Z"},{"alias_kind":"arxiv_version","alias_value":"2407.05506v2","created_at":"2026-07-05T08:42:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2407.05506","created_at":"2026-07-05T08:42:55Z"},{"alias_kind":"pith_short_12","alias_value":"E6LUAL46JXDG","created_at":"2026-07-05T08:42:55Z"},{"alias_kind":"pith_short_16","alias_value":"E6LUAL46JXDG3ANP","created_at":"2026-07-05T08:42:55Z"},{"alias_kind":"pith_short_8","alias_value":"E6LUAL46","created_at":"2026-07-05T08:42:55Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:E6LUAL46JXDG3ANPVDGTLH5QPX","target":"record","payload":{"canonical_record":{"source":{"id":"2407.05506","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2024-07-07T22:12:59Z","cross_cats_sorted":[],"title_canon_sha256":"cc3eb72fa4f78f5c6a5ef5d1cbe0a803b2b6f3563aadb964281431e827528e7c","abstract_canon_sha256":"03a5c32e39a79bf06f22661254fd7cdaae8823d8b918fba693a8996910ba74d1"},"schema_version":"1.0"},"canonical_sha256":"2797402f9e4dc66d81afa8cd359fb07dda36ddb36be736abb7a159e3394e408d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T08:42:55.130808Z","signature_b64":"WhFGmxxAAnS06FHJW1FMTRY+4LIyVhtwi2+RCb/u+TH5/r4E8/Y/2jEktoq93jx486aGbLZTurnFjXIEy+zjBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2797402f9e4dc66d81afa8cd359fb07dda36ddb36be736abb7a159e3394e408d","last_reissued_at":"2026-07-05T08:42:55.130396Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T08:42:55.130396Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2407.05506","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":"2026-07-05T08:42:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"heO+KZGhz/RCXI75Rk15GiXAB1s619dIvwW7JisX7l/DoH2lDj39JHqyehrB4s9xWAvJt3MZL5oZQ0pDoTNiCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T11:49:59.081916Z"},"content_sha256":"4b0210f4f0cefce7429a65c05031d0f14b16df9bd718ced5469f45273f0ce1ca","schema_version":"1.0","event_id":"sha256:4b0210f4f0cefce7429a65c05031d0f14b16df9bd718ced5469f45273f0ce1ca"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:E6LUAL46JXDG3ANPVDGTLH5QPX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Pruning Blockchain Protocols for Efficient Access Control in IoT Systems","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.DC","authors_text":"Farokh Bastani, I-Ling Yen, Yongtao Huang","submitted_at":"2024-07-07T22:12:59Z","abstract_excerpt":"We consider access control for IoT systems that involves shared accesses to the IoT devices as well as their data. Since IoT devices are dispersed all over the edge of the Internet, traditional centralized access control has problems. Blockchain based decentralized access control is thus the new solution trend. However, existing blockchain based access control methods do not focus on performance issues and may incur a high communication overhead.\n  In this paper, we develop a Pruning Blockchain based Access Control (PBAC) protocol to cutdown the unnecessary message rounds and achieve high effi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2407.05506","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2407.05506/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T08:42:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Uf5N+0qEJp4iOK54gsON/fwumqYfSokuQTXhWxrcqV/AFKOrrCtpGgC79gFh3BVLuwT9UOfPt+6dDryfwYAFAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T11:49:59.082538Z"},"content_sha256":"c027a2daa05de1eab6ac63b7030e1b3eee051c02b236e8625c0639395fe19f5e","schema_version":"1.0","event_id":"sha256:c027a2daa05de1eab6ac63b7030e1b3eee051c02b236e8625c0639395fe19f5e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/E6LUAL46JXDG3ANPVDGTLH5QPX/bundle.json","state_url":"https://pith.science/pith/E6LUAL46JXDG3ANPVDGTLH5QPX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/E6LUAL46JXDG3ANPVDGTLH5QPX/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":"2026-08-12T11:49:59Z","links":{"resolver":"https://pith.science/pith/E6LUAL46JXDG3ANPVDGTLH5QPX","bundle":"https://pith.science/pith/E6LUAL46JXDG3ANPVDGTLH5QPX/bundle.json","state":"https://pith.science/pith/E6LUAL46JXDG3ANPVDGTLH5QPX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/E6LUAL46JXDG3ANPVDGTLH5QPX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:E6LUAL46JXDG3ANPVDGTLH5QPX","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":"03a5c32e39a79bf06f22661254fd7cdaae8823d8b918fba693a8996910ba74d1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2024-07-07T22:12:59Z","title_canon_sha256":"cc3eb72fa4f78f5c6a5ef5d1cbe0a803b2b6f3563aadb964281431e827528e7c"},"schema_version":"1.0","source":{"id":"2407.05506","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2407.05506","created_at":"2026-07-05T08:42:55Z"},{"alias_kind":"arxiv_version","alias_value":"2407.05506v2","created_at":"2026-07-05T08:42:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2407.05506","created_at":"2026-07-05T08:42:55Z"},{"alias_kind":"pith_short_12","alias_value":"E6LUAL46JXDG","created_at":"2026-07-05T08:42:55Z"},{"alias_kind":"pith_short_16","alias_value":"E6LUAL46JXDG3ANP","created_at":"2026-07-05T08:42:55Z"},{"alias_kind":"pith_short_8","alias_value":"E6LUAL46","created_at":"2026-07-05T08:42:55Z"}],"graph_snapshots":[{"event_id":"sha256:c027a2daa05de1eab6ac63b7030e1b3eee051c02b236e8625c0639395fe19f5e","target":"graph","created_at":"2026-07-05T08:42:55Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2407.05506/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We consider access control for IoT systems that involves shared accesses to the IoT devices as well as their data. Since IoT devices are dispersed all over the edge of the Internet, traditional centralized access control has problems. Blockchain based decentralized access control is thus the new solution trend. However, existing blockchain based access control methods do not focus on performance issues and may incur a high communication overhead.\n  In this paper, we develop a Pruning Blockchain based Access Control (PBAC) protocol to cutdown the unnecessary message rounds and achieve high effi","authors_text":"Farokh Bastani, I-Ling Yen, Yongtao Huang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2024-07-07T22:12:59Z","title":"Pruning Blockchain Protocols for Efficient Access Control in IoT Systems"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2407.05506","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":"sha256:4b0210f4f0cefce7429a65c05031d0f14b16df9bd718ced5469f45273f0ce1ca","target":"record","created_at":"2026-07-05T08:42:55Z","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":"03a5c32e39a79bf06f22661254fd7cdaae8823d8b918fba693a8996910ba74d1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2024-07-07T22:12:59Z","title_canon_sha256":"cc3eb72fa4f78f5c6a5ef5d1cbe0a803b2b6f3563aadb964281431e827528e7c"},"schema_version":"1.0","source":{"id":"2407.05506","kind":"arxiv","version":2}},"canonical_sha256":"2797402f9e4dc66d81afa8cd359fb07dda36ddb36be736abb7a159e3394e408d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2797402f9e4dc66d81afa8cd359fb07dda36ddb36be736abb7a159e3394e408d","first_computed_at":"2026-07-05T08:42:55.130396Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T08:42:55.130396Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"WhFGmxxAAnS06FHJW1FMTRY+4LIyVhtwi2+RCb/u+TH5/r4E8/Y/2jEktoq93jx486aGbLZTurnFjXIEy+zjBA==","signature_status":"signed_v1","signed_at":"2026-07-05T08:42:55.130808Z","signed_message":"canonical_sha256_bytes"},"source_id":"2407.05506","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4b0210f4f0cefce7429a65c05031d0f14b16df9bd718ced5469f45273f0ce1ca","sha256:c027a2daa05de1eab6ac63b7030e1b3eee051c02b236e8625c0639395fe19f5e"],"state_sha256":"cafccf16cf00ceefe083ddff05e45753b558fcaf4d43265bbe23afb12bf9d11b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Fmrh2UbIawfGvBrE5k04GoZg9A+7JWMLxr/DzUlG09XnDvedc6v1DKZa8ZVUUDHazI8FvUFejRjtO6RJ19r4Cw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-12T11:49:59.087277Z","bundle_sha256":"8eb7ade9d86f67990b143b1fb69a53d77273396cd8ed8e90a80f93a64f799c74"}}