benchmark_mtp-zk.md

VoteMarket Proof Analysis Report

Generated: 2026-01-20T18:14:51.093Z

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Proof Details

Field	Value
Protocol	curve
Epoch	1730937600
Platform	N/A
Chain ID	42161
Gauge	0x26f7786de3e6d9bd37fcf47be6f2bc455a21b74a
Block Number	21134723
Users	67

Source URL:

https://raw.githubusercontent.com/stake-dao/api/refs/heads/main/api/votemarket/1730937600/curve/42161/0x26f7786de3e6d9bd37fcf47be6f2bc455a21b74a.json

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MPT Proof Analysis (Current Production)

Size Breakdown

Component	Size
Gauge Controller Proof	0 bytes
Point Data Proof	2.24 KB
User Proofs (67 users)	425.45 KB
Total Calldata	427.69 KB

Per-User Statistics

• Average proof size per user: 6.35 KB
• Total users: 67

Calldata Limit Check

Network	Limit	Usage	Status
Ethereum	128.00 KB	334.1%	❌ EXCEEDS LIMIT
Arbitrum	256.00 KB	167.1%	❌ EXCEEDS LIMIT

⚠️ WARNING: The MPT proof exceeds calldata limits for some networks. This proof would need to be split into multiple transactions.

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ZK Proof Analysis (Generated PLONK Proof)

Size Breakdown

Component	Size
PLONK Proof	868 bytes
Public Values	12.88 KB
Total Calldata	13.72 KB

Calldata Limit Check

Network	Limit	Usage	Status
Ethereum	128.00 KB	10.7%	✅ Within limit
Arbitrum	256.00 KB	5.4%	✅ Within limit

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Comparison: MPT vs ZK

Calldata Size

Metric	MPT	ZK (PLONK)
Total Calldata	427.69 KB	13.72 KB
Per User (effective)	6.38 KB	210 bytes

Improvement

Metric	Value
Reduction Factor	31.2x
Bytes Saved	413.96 KB
Percentage Saved	96.8%

Scaling Analysis (Projected)

Based on measured proof sizes:

• Proof size (constant): 868 bytes
• Public values overhead: ~160 bytes (header + 1 gauge)
• Per-user data: ~194 bytes

Users	MPT Calldata	ZK Calldata (projected)	Reduction
10	~65.74 KB	~2.90 KB	22.7x
50	~319.72 KB	~10.48 KB	30.5x
100	~637.20 KB	~19.95 KB	31.9x
500	~3.10 MB	~95.73 KB	33.2x

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Key Insights

❌ MPT Proof Exceeds Limits

The current MPT proof of 427.69 KB exceeds the practical calldata limit for Ethereum mainnet. This means:

• The proof must be split into multiple transactions
• Higher total gas costs due to multiple transactions
• More complex submission logic required

ZK Advantages

1. 31.2x smaller calldata - Significant gas savings
2. Constant proof size - PLONK proof is 868 bytes regardless of user count
3. Better scaling - As user count increases, ZK becomes proportionally more efficient
4. Single transaction - No need to split proofs for large user sets

Measured Cost Formula

• MPT: ~6502 bytes × users + 2295 bytes overhead
• ZK (PLONK): 868 bytes (proof) + 64 (header) + 96 × gauges + ~194 × users

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Files Generated

File	Description
mpt_proof.json	Original MPT proof from production
zk_input.json	Input file for SP1 ZK prover
proof.json	Generated ZK proof artifact
proof.bin	Binary proof for on-chain submission
metadata.json	Benchmark metadata
analysis.md	This analysis report

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Report generated by VoteMarket Benchmark Tool