Vetted Platforms
6 Aggregation Sources
All platforms were vetted for: public program listings, open participation, no restrictive ToS on aggregation.
| Platform | Fee | Type | Est. Active Programs | Notes |
|---|---|---|---|---|
| Immunefi | 10% | Web3 | 300+ | Dominant Web3 bounty platform. Covers $180B+ in assets. |
| Hats Finance | 0% | Web3 (on-chain) | 50+ | On-chain bounty escrow. Zero platform fee. |
| Codehawks | ~10% | Web3 | 30+ | Cyfrin's competitive audit platform. |
| Sherlock | ~10% | Web3 | 20+ | Audit + contest hybrid model. |
| HackenProof | ~10% | Web2/Web3 hybrid | 50+ | Bridge between Web2 and Web3 security. |
| Open Bug Bounty | Free | Web2 (community) | 1000+ | Largest free Web2 bounty platform. Community-driven. |
Web2 + Web3 Coverage
| Coverage | Platforms |
|---|---|
| Web3 | Immunefi, Hats Finance, Codehawks, Sherlock |
| Web2 | Open Bug Bounty, HackenProof |
| Hybrid | HackenProof |
Platform Fee Handling
Source platform fees are subtracted before Prowl's fee is applied:
Gross bounty: $50,000
Source platform fee (e.g., Immunefi 10%): -$5,000
Net bounty: $45,000
Prowl platform fee (20% base, reduced by staking): -$9,000 (at base rate)
Hunter receives: $38,250Token Payouts
Some Web3 bounties pay in native protocol tokens rather than stablecoins:
- Hunters and sponsors must register multi-chain wallet addresses
- Platform fees are collected in whatever token the bounty pays
- Auto-converted to USDC/SOL for revenue distribution
Auto-Refresh
- Bounties are re-indexed every 6 hours
- New bounties appear automatically
- Expired/completed bounties are removed
- AI complexity scoring applied to each target