{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:DAMIH7VIPO2AWUFMCJMNLMN77W","short_pith_number":"pith:DAMIH7VI","schema_version":"1.0","canonical_sha256":"181883fea87bb40b50ac1258d5b1bffdad0293eb70bacc4618a8c221cfe1f8d1","source":{"kind":"arxiv","id":"1805.06196","version":2},"attestation_state":"computed","paper":{"title":"On the Semantics of Snapshot Isolation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.PL"],"primary_cat":"cs.LO","authors_text":"Azalea Raad, Ori Lahav, Viktor Vafeiadis","submitted_at":"2018-05-16T08:59:47Z","abstract_excerpt":"Snapshot isolation (SI) is a standard transactional consistency model used in databases, distributed systems and software transactional memory (STM). Its semantics is formally defined both declaratively as an acyclicity axiom, and operationally as a concurrent algorithm with memory bearing timestamps.\n  We develop two simpler equivalent operational definitions of SI as lock-based reference implementations that do not use timestamps. Our first locking implementation is prescient in that requires a priori knowledge of the data accessed by a transaction and carries out transactional writes eagerl"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1805.06196","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LO","submitted_at":"2018-05-16T08:59:47Z","cross_cats_sorted":["cs.PL"],"title_canon_sha256":"cc1f45b7b58c9d423acf1bfa31e17240ee03936b9755207674a47fda414e592e","abstract_canon_sha256":"ff8763d96247d4b857463bb40e766a6ce84b3885570d48f32bc2faa88a960c2c"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:04:39.382082Z","signature_b64":"3YEXwnv6LTOsft9bGrGvPN5wwEhvaM04egeii8saNAXuVGJRA+oreIdLUUyoRtO+lyxQubSOC1GuIJZ4SlmUDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"181883fea87bb40b50ac1258d5b1bffdad0293eb70bacc4618a8c221cfe1f8d1","last_reissued_at":"2026-05-18T00:04:39.381494Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:04:39.381494Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"On the Semantics of Snapshot Isolation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.PL"],"primary_cat":"cs.LO","authors_text":"Azalea Raad, Ori Lahav, Viktor Vafeiadis","submitted_at":"2018-05-16T08:59:47Z","abstract_excerpt":"Snapshot isolation (SI) is a standard transactional consistency model used in databases, distributed systems and software transactional memory (STM). Its semantics is formally defined both declaratively as an acyclicity axiom, and operationally as a concurrent algorithm with memory bearing timestamps.\n  We develop two simpler equivalent operational definitions of SI as lock-based reference implementations that do not use timestamps. Our first locking implementation is prescient in that requires a priori knowledge of the data accessed by a transaction and carries out transactional writes eagerl"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.06196","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1805.06196","created_at":"2026-05-18T00:04:39.381587+00:00"},{"alias_kind":"arxiv_version","alias_value":"1805.06196v2","created_at":"2026-05-18T00:04:39.381587+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.06196","created_at":"2026-05-18T00:04:39.381587+00:00"},{"alias_kind":"pith_short_12","alias_value":"DAMIH7VIPO2A","created_at":"2026-05-18T12:32:19.392346+00:00"},{"alias_kind":"pith_short_16","alias_value":"DAMIH7VIPO2AWUFM","created_at":"2026-05-18T12:32:19.392346+00:00"},{"alias_kind":"pith_short_8","alias_value":"DAMIH7VI","created_at":"2026-05-18T12:32:19.392346+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/DAMIH7VIPO2AWUFMCJMNLMN77W","json":"https://pith.science/pith/DAMIH7VIPO2AWUFMCJMNLMN77W.json","graph_json":"https://pith.science/api/pith-number/DAMIH7VIPO2AWUFMCJMNLMN77W/graph.json","events_json":"https://pith.science/api/pith-number/DAMIH7VIPO2AWUFMCJMNLMN77W/events.json","paper":"https://pith.science/paper/DAMIH7VI"},"agent_actions":{"view_html":"https://pith.science/pith/DAMIH7VIPO2AWUFMCJMNLMN77W","download_json":"https://pith.science/pith/DAMIH7VIPO2AWUFMCJMNLMN77W.json","view_paper":"https://pith.science/paper/DAMIH7VI","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1805.06196&json=true","fetch_graph":"https://pith.science/api/pith-number/DAMIH7VIPO2AWUFMCJMNLMN77W/graph.json","fetch_events":"https://pith.science/api/pith-number/DAMIH7VIPO2AWUFMCJMNLMN77W/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/DAMIH7VIPO2AWUFMCJMNLMN77W/action/timestamp_anchor","attest_storage":"https://pith.science/pith/DAMIH7VIPO2AWUFMCJMNLMN77W/action/storage_attestation","attest_author":"https://pith.science/pith/DAMIH7VIPO2AWUFMCJMNLMN77W/action/author_attestation","sign_citation":"https://pith.science/pith/DAMIH7VIPO2AWUFMCJMNLMN77W/action/citation_signature","submit_replication":"https://pith.science/pith/DAMIH7VIPO2AWUFMCJMNLMN77W/action/replication_record"}},"created_at":"2026-05-18T00:04:39.381587+00:00","updated_at":"2026-05-18T00:04:39.381587+00:00"}