{"document_id":"BLC-STUDY-0095","slug":"bullshark","title":"Bullshark: DAG BFT Protocols Made Practical","authors":"Alexander Spiegelman, Neil Giridharan, Alberto Sonnino and Lefteris Kokoris-Kogias","year":2022,"date_label":"2022","publisher":"Alexander Spiegelman, Neil Giridharan, Alberto Sonnino and Lefteris Kokoris-Kogias","paper_type":"Design paper","category":"Consensus","topics":["Consensus"],"source_url":"https://arxiv.org/abs/2201.05677","source_label":"arXiv:2201.05677","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 2022 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.","editorial_line":"DAG-Rider is built for asynchrony and pays for it on the common path. Bullshark keeps a DAG and a local commit rule, but adds a fast path for when the network is timely. The paper also writes down a simpler partially synchronous version.","canonical_url":"https://blockchainlab.com/whitepaper/bullshark","record_url":"https://blockchainlab.com/research/corpus/papers/bullshark","study_url":"https://blockchainlab.com/whitepaper/bullshark","last_reviewed":"2026-10-01","last_checked":"2026-10-01","relationships":[{"rel":"Canonical reading","label":"Bullshark study","href":"/whitepaper/bullshark"},{"rel":"Related paper","label":"DAG-Rider","href":"/whitepaper/dag-rider"},{"rel":"Related paper","label":"Narwhal and Tusk","href":"/whitepaper/narwhal-tusk"},{"rel":"Related paper","label":"Aptos","href":"/whitepaper/aptos"}]}