SP1 Hypercube and the Jagged PCS
summary
SP1 Hypercube is a multilinear-based zkVM that implements a new jagged polynomial commitment to pack many opcode-specific tables into one sparse encoding, reduces soundness checks via sumcheck/GKR and evaluates tricky multilinear extensions using small-width read-once branching programs. It runs on GPUs and already proves average Ethereum blocks in benchmarks (reported 160 GPUs, 10.3s median with ~94% ≤12s), produces ~1MB proofs, uses Poseidon hashes and targets ~100-bit security.
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chapters (11)
- 0:00Introduction to SP1
- 3:20Overview of zkVMs
- 7:19RISC-V in SP1
- 10:37Hypercube features
- 16:30Security and soundness
- 21:13Real-time proving performance
- 30:08IVC architecture
- 34:08Theoretical foundations
- 37:12Technical challenges
- 42:16Architectural optimization
- 48:37Jagged PCS and conclusion
