{"document_id":"BLC-STUDY-0728","slug":"ritual-symphony","title":"Symphony: execution-aware consensus and proposer disaggregation","authors":"Ritual","year":2026,"date_label":"2026","publisher":"Ritual","paper_type":"Design paper","category":"Consensus","topics":["Consensus"],"source_url":"https://whitepaper.ritualfoundation.org/Ritual-WP.pdf","source_label":"Symphony, Ritual, 20 April 2026","legacy_pdf_path":null,"sha256":null,"sha256_note":"No hash is published. This build does not store those PDF bytes, so a checksum would be invented. Where a legacy path exists, it points at the Internet Archive copy of the old library.","version":"Source cited by the 2026 study. The study is the reading. This page does not add a second essay.","doi":null,"rights_status":"Official external source only","source_status":"Official source","use_status":"Metadata and commentary only. The reading is the study page.","licence":null,"licence_label":"No licence recorded. Rights status under review.","full_text":null,"full_text_reason":"Full text is not published on this page. Public availability is not a licence to republish a document. Blockchain Lab has not recorded a licence that permits an HTML transcription, a training set, or a retrieval corpus of the paper. Text on this page is Blockchain Lab's own wording, or a pointer to a study that is also Blockchain Lab's wording.","repository":null,"editorial_line":"Symphony argues that ordinary consensus assumes execution is cheap and deterministic, and that this fails when a transaction is expensive or random. It proposes to split a proposer's control of a block into separate checks, and to accept a proof of delegated work instead of asking every validator to re-run it.","canonical_url":"https://blockchainlab.com/whitepaper/ritual-symphony","record_url":"https://blockchainlab.com/research/corpus/papers/ritual-symphony","study_url":"https://blockchainlab.com/whitepaper/ritual-symphony","last_reviewed":"2026-10-01","last_checked":"2026-10-01","relationships":[{"rel":"Canonical reading","label":"Ritual Symphony study","href":"/whitepaper/ritual-symphony"},{"rel":"Related paper","label":"Proposer-builder separation","href":"/whitepaper/enshrined-pbs-note"},{"rel":"Related paper","label":"Ethereum consensus specs","href":"/whitepaper/ethereum-consensus-specs"},{"rel":"Related paper","label":"RISC Zero","href":"/whitepaper/risc-zero-zkvm"}]}