{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:QXTJ4MO4M7BTKZ2VJWUJDONC7Q","short_pith_number":"pith:QXTJ4MO4","canonical_record":{"source":{"id":"1701.04920","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LO","submitted_at":"2017-01-18T01:31:58Z","cross_cats_sorted":[],"title_canon_sha256":"8b654ad70464dfff906ab1d28f74a7347d957d25095b3db6645375cc44619e01","abstract_canon_sha256":"479c0dac08d1d0185468fed3ac86da8d50e12530df72403638e19a1dfdc37c04"},"schema_version":"1.0"},"canonical_sha256":"85e69e31dc67c33567554da891b9a2fc0436feb79a1af5366c7f50b424bee185","source":{"kind":"arxiv","id":"1701.04920","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1701.04920","created_at":"2026-05-18T00:52:33Z"},{"alias_kind":"arxiv_version","alias_value":"1701.04920v1","created_at":"2026-05-18T00:52:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1701.04920","created_at":"2026-05-18T00:52:33Z"},{"alias_kind":"pith_short_12","alias_value":"QXTJ4MO4M7BT","created_at":"2026-05-18T12:31:39Z"},{"alias_kind":"pith_short_16","alias_value":"QXTJ4MO4M7BTKZ2V","created_at":"2026-05-18T12:31:39Z"},{"alias_kind":"pith_short_8","alias_value":"QXTJ4MO4","created_at":"2026-05-18T12:31:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:QXTJ4MO4M7BTKZ2VJWUJDONC7Q","target":"record","payload":{"canonical_record":{"source":{"id":"1701.04920","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LO","submitted_at":"2017-01-18T01:31:58Z","cross_cats_sorted":[],"title_canon_sha256":"8b654ad70464dfff906ab1d28f74a7347d957d25095b3db6645375cc44619e01","abstract_canon_sha256":"479c0dac08d1d0185468fed3ac86da8d50e12530df72403638e19a1dfdc37c04"},"schema_version":"1.0"},"canonical_sha256":"85e69e31dc67c33567554da891b9a2fc0436feb79a1af5366c7f50b424bee185","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:52:33.534828Z","signature_b64":"Cu+0IZXXfmGMHcHyqULsOWs9gdvQxuafIrTwhTbXF97UtXhGJRgUeGDfVrgvhyCpcK/sbMxnrISVdzEB/KYmDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"85e69e31dc67c33567554da891b9a2fc0436feb79a1af5366c7f50b424bee185","last_reissued_at":"2026-05-18T00:52:33.534394Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:52:33.534394Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1701.04920","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":"2026-05-18T00:52:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wU+9hjib5FXBlVtjUNYSo1beaQi2ja2K8QTJtyQA6omqecSKRxm547julpf1LeFPWDzF0Pco7CZzs8r1t4gBCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T09:45:40.376970Z"},"content_sha256":"f72609c7d9615af58c220e06f3ab637abdba8b14d5e9baf900eb3e1a7a6ecc77","schema_version":"1.0","event_id":"sha256:f72609c7d9615af58c220e06f3ab637abdba8b14d5e9baf900eb3e1a7a6ecc77"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:QXTJ4MO4M7BTKZ2VJWUJDONC7Q","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Non-Blocking Concurrent Imperative Programming with Session Types","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.LO","authors_text":"Frank Pfenning, M\\'ario Florido, Miguel Silva","submitted_at":"2017-01-18T01:31:58Z","abstract_excerpt":"Concurrent C0 is an imperative programming language in the C family with session-typed message-passing concurrency. The previously proposed semantics implements asynchronous (non-blocking) output; we extend it here with non-blocking input. A key idea is to postpone message reception as much as possible by interpreting receive commands as a request for a message. We implemented our ideas as a translation from a blocking intermediate language to a non-blocking language. Finally, we evaluated our techniques with several benchmark programs and show the results obtained. While the abstract measure "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1701.04920","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":"2026-05-18T00:52:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iTyc3v95vlVe89zpoK5MMk6ODXz4sG84hSiusxWy2FM6INc8R7iO9Gd2NDgF+bdeWebSUDQiUXsW+/NMyPSZAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T09:45:40.377308Z"},"content_sha256":"a98b5f5cbe69e94f351e708c36549ba55d403af81c2d93e6a432953c35acdfd8","schema_version":"1.0","event_id":"sha256:a98b5f5cbe69e94f351e708c36549ba55d403af81c2d93e6a432953c35acdfd8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QXTJ4MO4M7BTKZ2VJWUJDONC7Q/bundle.json","state_url":"https://pith.science/pith/QXTJ4MO4M7BTKZ2VJWUJDONC7Q/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QXTJ4MO4M7BTKZ2VJWUJDONC7Q/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":"2026-06-02T09:45:40Z","links":{"resolver":"https://pith.science/pith/QXTJ4MO4M7BTKZ2VJWUJDONC7Q","bundle":"https://pith.science/pith/QXTJ4MO4M7BTKZ2VJWUJDONC7Q/bundle.json","state":"https://pith.science/pith/QXTJ4MO4M7BTKZ2VJWUJDONC7Q/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QXTJ4MO4M7BTKZ2VJWUJDONC7Q/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:QXTJ4MO4M7BTKZ2VJWUJDONC7Q","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":"479c0dac08d1d0185468fed3ac86da8d50e12530df72403638e19a1dfdc37c04","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LO","submitted_at":"2017-01-18T01:31:58Z","title_canon_sha256":"8b654ad70464dfff906ab1d28f74a7347d957d25095b3db6645375cc44619e01"},"schema_version":"1.0","source":{"id":"1701.04920","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1701.04920","created_at":"2026-05-18T00:52:33Z"},{"alias_kind":"arxiv_version","alias_value":"1701.04920v1","created_at":"2026-05-18T00:52:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1701.04920","created_at":"2026-05-18T00:52:33Z"},{"alias_kind":"pith_short_12","alias_value":"QXTJ4MO4M7BT","created_at":"2026-05-18T12:31:39Z"},{"alias_kind":"pith_short_16","alias_value":"QXTJ4MO4M7BTKZ2V","created_at":"2026-05-18T12:31:39Z"},{"alias_kind":"pith_short_8","alias_value":"QXTJ4MO4","created_at":"2026-05-18T12:31:39Z"}],"graph_snapshots":[{"event_id":"sha256:a98b5f5cbe69e94f351e708c36549ba55d403af81c2d93e6a432953c35acdfd8","target":"graph","created_at":"2026-05-18T00:52:33Z","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":"Concurrent C0 is an imperative programming language in the C family with session-typed message-passing concurrency. The previously proposed semantics implements asynchronous (non-blocking) output; we extend it here with non-blocking input. A key idea is to postpone message reception as much as possible by interpreting receive commands as a request for a message. We implemented our ideas as a translation from a blocking intermediate language to a non-blocking language. Finally, we evaluated our techniques with several benchmark programs and show the results obtained. While the abstract measure ","authors_text":"Frank Pfenning, M\\'ario Florido, Miguel Silva","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LO","submitted_at":"2017-01-18T01:31:58Z","title":"Non-Blocking Concurrent Imperative Programming with Session Types"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1701.04920","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:f72609c7d9615af58c220e06f3ab637abdba8b14d5e9baf900eb3e1a7a6ecc77","target":"record","created_at":"2026-05-18T00:52:33Z","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":"479c0dac08d1d0185468fed3ac86da8d50e12530df72403638e19a1dfdc37c04","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LO","submitted_at":"2017-01-18T01:31:58Z","title_canon_sha256":"8b654ad70464dfff906ab1d28f74a7347d957d25095b3db6645375cc44619e01"},"schema_version":"1.0","source":{"id":"1701.04920","kind":"arxiv","version":1}},"canonical_sha256":"85e69e31dc67c33567554da891b9a2fc0436feb79a1af5366c7f50b424bee185","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"85e69e31dc67c33567554da891b9a2fc0436feb79a1af5366c7f50b424bee185","first_computed_at":"2026-05-18T00:52:33.534394Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:52:33.534394Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Cu+0IZXXfmGMHcHyqULsOWs9gdvQxuafIrTwhTbXF97UtXhGJRgUeGDfVrgvhyCpcK/sbMxnrISVdzEB/KYmDA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:52:33.534828Z","signed_message":"canonical_sha256_bytes"},"source_id":"1701.04920","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f72609c7d9615af58c220e06f3ab637abdba8b14d5e9baf900eb3e1a7a6ecc77","sha256:a98b5f5cbe69e94f351e708c36549ba55d403af81c2d93e6a432953c35acdfd8"],"state_sha256":"71a5d943dc542503d7a0db782cdc263696a9703483f887a6c12c82a393132764"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ES7zjZk81xXIQVsZb7mB+Nvjn2XQ6x+o3mgx6Dyqgm6fiy5uCd+pMLWfFKpQBIjmCUVEWTt8nWyL9U85IIBxBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T09:45:40.379176Z","bundle_sha256":"2bb77b2a2dd50941e171157209eba13f443802147a1c127ffa76da8aff8a7485"}}