{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:2T3DM5BQTBUFCNOU5WY5Z4RV7Q","short_pith_number":"pith:2T3DM5BQ","canonical_record":{"source":{"id":"1312.2705","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2013-12-10T08:04:28Z","cross_cats_sorted":["cs.LO","cs.PL"],"title_canon_sha256":"54a86d8e7a91627ca7a1760066f94032e47ee35c58b05510aba82300eaf0cf14","abstract_canon_sha256":"659f1bc13bd835b747fd23f727be3f1c34dd36313395b679e9b5cb8ce62560f4"},"schema_version":"1.0"},"canonical_sha256":"d4f636743098685135d4edb1dcf235fc076d49710e370929fb3cbb84dc3a0a5d","source":{"kind":"arxiv","id":"1312.2705","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1312.2705","created_at":"2026-05-18T03:05:09Z"},{"alias_kind":"arxiv_version","alias_value":"1312.2705v1","created_at":"2026-05-18T03:05:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1312.2705","created_at":"2026-05-18T03:05:09Z"},{"alias_kind":"pith_short_12","alias_value":"2T3DM5BQTBUF","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_16","alias_value":"2T3DM5BQTBUFCNOU","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_8","alias_value":"2T3DM5BQ","created_at":"2026-05-18T12:27:32Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:2T3DM5BQTBUFCNOU5WY5Z4RV7Q","target":"record","payload":{"canonical_record":{"source":{"id":"1312.2705","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2013-12-10T08:04:28Z","cross_cats_sorted":["cs.LO","cs.PL"],"title_canon_sha256":"54a86d8e7a91627ca7a1760066f94032e47ee35c58b05510aba82300eaf0cf14","abstract_canon_sha256":"659f1bc13bd835b747fd23f727be3f1c34dd36313395b679e9b5cb8ce62560f4"},"schema_version":"1.0"},"canonical_sha256":"d4f636743098685135d4edb1dcf235fc076d49710e370929fb3cbb84dc3a0a5d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:05:09.062372Z","signature_b64":"vLf73CYABboXmX/rY2mNVtfa9Hh0X7ofGp66OtggCt/l6rhf1dO5IWLfG8r3YW8MkQZCpzIGoh+4NEW3GcADBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d4f636743098685135d4edb1dcf235fc076d49710e370929fb3cbb84dc3a0a5d","last_reissued_at":"2026-05-18T03:05:09.061878Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:05:09.061878Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1312.2705","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":"2026-05-18T03:05:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Cw4cb9fzABdJFAIXnOY+iHBpcL4NWaZUdjrCtR+CmplRTaWzYrISKC8Agauoo5rD0jhdS8F4oCKDUoqCHhZkAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-26T17:14:51.172167Z"},"content_sha256":"0d202885a2ec2ab6c0aeffc37cdb9bc114b47a68f74ddc28f22ee93390b3028b","schema_version":"1.0","event_id":"sha256:0d202885a2ec2ab6c0aeffc37cdb9bc114b47a68f74ddc28f22ee93390b3028b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:2T3DM5BQTBUFCNOU5WY5Z4RV7Q","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Towards deductive verification of MPI programs against session types","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.LO","cs.PL"],"primary_cat":"cs.DC","authors_text":"Eduardo R. B. Marques (LASIGE/FCUL, Francisco Martins (LASIGE/FCUL, Nicholas Ng (Imperial College London), Nuno Martins (LASIGE/FCUL, Universidade of Lisbon), Vasco T. Vasconcelos (LASIGE/FCUL","submitted_at":"2013-12-10T08:04:28Z","abstract_excerpt":"The Message Passing Interface (MPI) is the de facto standard message-passing infrastructure for developing parallel applications. Two decades after the first version of the library specification, MPI-based applications are nowadays routinely deployed on super and cluster computers. These applications, written in C or Fortran, exhibit intricate message passing behaviours, making it hard to statically verify important properties such as the absence of deadlocks. Our work builds on session types, a theory for describing protocols that provides for correct-by-construction guarantees in this regard"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1312.2705","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":"2026-05-18T03:05:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QOk3Pk3pMpKpNhe4s6g49tFxZYt/5wF9HXkeHiKyf7aBr+A58lHl7xk5mhdnPhH6Y8t9IQM1mqgnZaSsJ5BKBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-26T17:14:51.172523Z"},"content_sha256":"53d500d218865a5a4ddb248de6f891b7ba591f94baea2bede44b4710c7ff80fa","schema_version":"1.0","event_id":"sha256:53d500d218865a5a4ddb248de6f891b7ba591f94baea2bede44b4710c7ff80fa"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2T3DM5BQTBUFCNOU5WY5Z4RV7Q/bundle.json","state_url":"https://pith.science/pith/2T3DM5BQTBUFCNOU5WY5Z4RV7Q/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2T3DM5BQTBUFCNOU5WY5Z4RV7Q/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":"2026-06-26T17:14:51Z","links":{"resolver":"https://pith.science/pith/2T3DM5BQTBUFCNOU5WY5Z4RV7Q","bundle":"https://pith.science/pith/2T3DM5BQTBUFCNOU5WY5Z4RV7Q/bundle.json","state":"https://pith.science/pith/2T3DM5BQTBUFCNOU5WY5Z4RV7Q/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2T3DM5BQTBUFCNOU5WY5Z4RV7Q/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:2T3DM5BQTBUFCNOU5WY5Z4RV7Q","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":"659f1bc13bd835b747fd23f727be3f1c34dd36313395b679e9b5cb8ce62560f4","cross_cats_sorted":["cs.LO","cs.PL"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2013-12-10T08:04:28Z","title_canon_sha256":"54a86d8e7a91627ca7a1760066f94032e47ee35c58b05510aba82300eaf0cf14"},"schema_version":"1.0","source":{"id":"1312.2705","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1312.2705","created_at":"2026-05-18T03:05:09Z"},{"alias_kind":"arxiv_version","alias_value":"1312.2705v1","created_at":"2026-05-18T03:05:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1312.2705","created_at":"2026-05-18T03:05:09Z"},{"alias_kind":"pith_short_12","alias_value":"2T3DM5BQTBUF","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_16","alias_value":"2T3DM5BQTBUFCNOU","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_8","alias_value":"2T3DM5BQ","created_at":"2026-05-18T12:27:32Z"}],"graph_snapshots":[{"event_id":"sha256:53d500d218865a5a4ddb248de6f891b7ba591f94baea2bede44b4710c7ff80fa","target":"graph","created_at":"2026-05-18T03:05:09Z","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":"The Message Passing Interface (MPI) is the de facto standard message-passing infrastructure for developing parallel applications. Two decades after the first version of the library specification, MPI-based applications are nowadays routinely deployed on super and cluster computers. These applications, written in C or Fortran, exhibit intricate message passing behaviours, making it hard to statically verify important properties such as the absence of deadlocks. Our work builds on session types, a theory for describing protocols that provides for correct-by-construction guarantees in this regard","authors_text":"Eduardo R. B. Marques (LASIGE/FCUL, Francisco Martins (LASIGE/FCUL, Nicholas Ng (Imperial College London), Nuno Martins (LASIGE/FCUL, Universidade of Lisbon), Vasco T. Vasconcelos (LASIGE/FCUL","cross_cats":["cs.LO","cs.PL"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2013-12-10T08:04:28Z","title":"Towards deductive verification of MPI programs against session types"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1312.2705","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":"sha256:0d202885a2ec2ab6c0aeffc37cdb9bc114b47a68f74ddc28f22ee93390b3028b","target":"record","created_at":"2026-05-18T03:05:09Z","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":"659f1bc13bd835b747fd23f727be3f1c34dd36313395b679e9b5cb8ce62560f4","cross_cats_sorted":["cs.LO","cs.PL"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DC","submitted_at":"2013-12-10T08:04:28Z","title_canon_sha256":"54a86d8e7a91627ca7a1760066f94032e47ee35c58b05510aba82300eaf0cf14"},"schema_version":"1.0","source":{"id":"1312.2705","kind":"arxiv","version":1}},"canonical_sha256":"d4f636743098685135d4edb1dcf235fc076d49710e370929fb3cbb84dc3a0a5d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d4f636743098685135d4edb1dcf235fc076d49710e370929fb3cbb84dc3a0a5d","first_computed_at":"2026-05-18T03:05:09.061878Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:05:09.061878Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"vLf73CYABboXmX/rY2mNVtfa9Hh0X7ofGp66OtggCt/l6rhf1dO5IWLfG8r3YW8MkQZCpzIGoh+4NEW3GcADBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:05:09.062372Z","signed_message":"canonical_sha256_bytes"},"source_id":"1312.2705","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0d202885a2ec2ab6c0aeffc37cdb9bc114b47a68f74ddc28f22ee93390b3028b","sha256:53d500d218865a5a4ddb248de6f891b7ba591f94baea2bede44b4710c7ff80fa"],"state_sha256":"58564cebc60b79fee92b8946136d5b60ba00f4688dd7306e990a8b624aef993e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"l6BOOPfnnxlivamrXcQu77dj1FBgCdmyN0bAmOlBBTF1SXwvudAQIoyhSC0Lc6sFRX3QMNoSRlzNIfMMY7suDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-26T17:14:51.174562Z","bundle_sha256":"a2aa432165bed5b7896340a1c022637bda11d3d726a4d9656220d2d5de1217ae"}}