{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:QE4Z7DJMLIQLWT5CSBBPSDPA4G","short_pith_number":"pith:QE4Z7DJM","canonical_record":{"source":{"id":"1710.04839","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.PL","submitted_at":"2017-10-13T08:36:16Z","cross_cats_sorted":["cs.DC"],"title_canon_sha256":"dc891ef3a69a4d50b0b1a0cd6982007d0ae01976aa707b9cb94494fbb851fbdb","abstract_canon_sha256":"c56bb98e0cb7fa30c97d8a501fbb9757e4a51f7845cb71b5db0b1d38d5a9934b"},"schema_version":"1.0"},"canonical_sha256":"81399f8d2c5a20bb4fa29042f90de0e191ac3b40b6dbbe8b1d7ca35803fd30db","source":{"kind":"arxiv","id":"1710.04839","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1710.04839","created_at":"2026-05-18T00:18:25Z"},{"alias_kind":"arxiv_version","alias_value":"1710.04839v2","created_at":"2026-05-18T00:18:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1710.04839","created_at":"2026-05-18T00:18:25Z"},{"alias_kind":"pith_short_12","alias_value":"QE4Z7DJMLIQL","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_16","alias_value":"QE4Z7DJMLIQLWT5C","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_8","alias_value":"QE4Z7DJM","created_at":"2026-05-18T12:31:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:QE4Z7DJMLIQLWT5CSBBPSDPA4G","target":"record","payload":{"canonical_record":{"source":{"id":"1710.04839","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.PL","submitted_at":"2017-10-13T08:36:16Z","cross_cats_sorted":["cs.DC"],"title_canon_sha256":"dc891ef3a69a4d50b0b1a0cd6982007d0ae01976aa707b9cb94494fbb851fbdb","abstract_canon_sha256":"c56bb98e0cb7fa30c97d8a501fbb9757e4a51f7845cb71b5db0b1d38d5a9934b"},"schema_version":"1.0"},"canonical_sha256":"81399f8d2c5a20bb4fa29042f90de0e191ac3b40b6dbbe8b1d7ca35803fd30db","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:18:25.612852Z","signature_b64":"ckbKmD6F0rKJOQNoS2GGGccfOuhM0fbMvEy2Tki5ZQJMypdUB+24xshpzSZ7kFlG/2QqhqDuVKBqr28x9NRUCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"81399f8d2c5a20bb4fa29042f90de0e191ac3b40b6dbbe8b1d7ca35803fd30db","last_reissued_at":"2026-05-18T00:18:25.612346Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:18:25.612346Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1710.04839","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":"2026-05-18T00:18:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CX/M/rxmGkP8SLPcgbNrJPWrDAjofpfaI9k41qvPJYwcge2IUxLw/dpYQscZzxQA+1OiPtcKA5+z0a36RF+gAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T22:15:15.192775Z"},"content_sha256":"9fcc815fbe20fdce95255063b8a220bba505a8c21b533ede3ddd5a5447add530","schema_version":"1.0","event_id":"sha256:9fcc815fbe20fdce95255063b8a220bba505a8c21b533ede3ddd5a5447add530"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:QE4Z7DJMLIQLWT5CSBBPSDPA4G","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Semantics of Transactions and Weak Memory in x86, Power, ARM, and C++","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.DC"],"primary_cat":"cs.PL","authors_text":"John Wickerson, Nathan Chong, Tyler Sorensen","submitted_at":"2017-10-13T08:36:16Z","abstract_excerpt":"Weak memory models provide a complex, system-centric semantics for concurrent programs, while transactional memory (TM) provides a simpler, programmer-centric semantics. Both have been studied in detail, but their combined semantics is not well understood. This is problematic because such widely-used architectures and languages as x86, Power, and C++ all support TM, and all have weak memory models.\n  Our work aims to clarify the interplay between weak memory and TM by extending existing axiomatic weak memory models (x86, Power, ARMv8, and C++) with new rules for TM. Our formal models are backe"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1710.04839","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":"2026-05-18T00:18:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kZyMpw9Tvq7ze5MADBzLiuhYLspkMPTFxYZbIhiW7yMTl6lWfSt/dF4+VdlL8Oa2Qd6jtaZG6Z/eMtDbO7YLBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T22:15:15.193158Z"},"content_sha256":"bdcd0fe513c8b3d47454ae8825b303a34d81f4077e76547f38c3959ca99b5243","schema_version":"1.0","event_id":"sha256:bdcd0fe513c8b3d47454ae8825b303a34d81f4077e76547f38c3959ca99b5243"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QE4Z7DJMLIQLWT5CSBBPSDPA4G/bundle.json","state_url":"https://pith.science/pith/QE4Z7DJMLIQLWT5CSBBPSDPA4G/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QE4Z7DJMLIQLWT5CSBBPSDPA4G/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":"2026-05-27T22:15:15Z","links":{"resolver":"https://pith.science/pith/QE4Z7DJMLIQLWT5CSBBPSDPA4G","bundle":"https://pith.science/pith/QE4Z7DJMLIQLWT5CSBBPSDPA4G/bundle.json","state":"https://pith.science/pith/QE4Z7DJMLIQLWT5CSBBPSDPA4G/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QE4Z7DJMLIQLWT5CSBBPSDPA4G/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:QE4Z7DJMLIQLWT5CSBBPSDPA4G","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":"c56bb98e0cb7fa30c97d8a501fbb9757e4a51f7845cb71b5db0b1d38d5a9934b","cross_cats_sorted":["cs.DC"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.PL","submitted_at":"2017-10-13T08:36:16Z","title_canon_sha256":"dc891ef3a69a4d50b0b1a0cd6982007d0ae01976aa707b9cb94494fbb851fbdb"},"schema_version":"1.0","source":{"id":"1710.04839","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1710.04839","created_at":"2026-05-18T00:18:25Z"},{"alias_kind":"arxiv_version","alias_value":"1710.04839v2","created_at":"2026-05-18T00:18:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1710.04839","created_at":"2026-05-18T00:18:25Z"},{"alias_kind":"pith_short_12","alias_value":"QE4Z7DJMLIQL","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_16","alias_value":"QE4Z7DJMLIQLWT5C","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_8","alias_value":"QE4Z7DJM","created_at":"2026-05-18T12:31:37Z"}],"graph_snapshots":[{"event_id":"sha256:bdcd0fe513c8b3d47454ae8825b303a34d81f4077e76547f38c3959ca99b5243","target":"graph","created_at":"2026-05-18T00:18:25Z","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":"Weak memory models provide a complex, system-centric semantics for concurrent programs, while transactional memory (TM) provides a simpler, programmer-centric semantics. Both have been studied in detail, but their combined semantics is not well understood. This is problematic because such widely-used architectures and languages as x86, Power, and C++ all support TM, and all have weak memory models.\n  Our work aims to clarify the interplay between weak memory and TM by extending existing axiomatic weak memory models (x86, Power, ARMv8, and C++) with new rules for TM. Our formal models are backe","authors_text":"John Wickerson, Nathan Chong, Tyler Sorensen","cross_cats":["cs.DC"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.PL","submitted_at":"2017-10-13T08:36:16Z","title":"The Semantics of Transactions and Weak Memory in x86, Power, ARM, and C++"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1710.04839","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":"sha256:9fcc815fbe20fdce95255063b8a220bba505a8c21b533ede3ddd5a5447add530","target":"record","created_at":"2026-05-18T00:18:25Z","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":"c56bb98e0cb7fa30c97d8a501fbb9757e4a51f7845cb71b5db0b1d38d5a9934b","cross_cats_sorted":["cs.DC"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.PL","submitted_at":"2017-10-13T08:36:16Z","title_canon_sha256":"dc891ef3a69a4d50b0b1a0cd6982007d0ae01976aa707b9cb94494fbb851fbdb"},"schema_version":"1.0","source":{"id":"1710.04839","kind":"arxiv","version":2}},"canonical_sha256":"81399f8d2c5a20bb4fa29042f90de0e191ac3b40b6dbbe8b1d7ca35803fd30db","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"81399f8d2c5a20bb4fa29042f90de0e191ac3b40b6dbbe8b1d7ca35803fd30db","first_computed_at":"2026-05-18T00:18:25.612346Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:18:25.612346Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ckbKmD6F0rKJOQNoS2GGGccfOuhM0fbMvEy2Tki5ZQJMypdUB+24xshpzSZ7kFlG/2QqhqDuVKBqr28x9NRUCw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:18:25.612852Z","signed_message":"canonical_sha256_bytes"},"source_id":"1710.04839","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9fcc815fbe20fdce95255063b8a220bba505a8c21b533ede3ddd5a5447add530","sha256:bdcd0fe513c8b3d47454ae8825b303a34d81f4077e76547f38c3959ca99b5243"],"state_sha256":"63f863aa2fd3d1a242d1e8dfb49efe1df6dc1ac33007806930dd40b7bcf900f0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"d37IWenbrkGRpGwsW2qHeJ+WRtngSIcbgdlkoZLP3X3k/3TCwLpuBOkBsUuq/aqB4hXoU+SFLsnbRUOjMu7NAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T22:15:15.198808Z","bundle_sha256":"0555f57750569d8029743f0fd7c9686f0cff324a35f05f6f5c568022f283ac66"}}