Fill-level tax recomputation for Hyperliquid traders
Open protocols on Bitcoin that anyone can verify without trusting a company
Stage
Startup
Startup
Founded
2026
2025
Based in
Not given
Not given
Pricing model
Freemium
Freemium
Pricing
Free tax check available; full reports priced by fill count, paid in USDC on Arbitrum, Base or Ethereum. Reports start from $29.
Protocol tools and ochk.app sign-in are free. Apps that pay users on ochk.app pay a 20% platform fee. vault.ochk.io offers cloud sync priced in sats and paid on-chain.
Key features
Fill-by-fill recomputation of realized PnL, funding events, and signed fees
Full trading history reconstruction from independent chain indexer
Two-axis independent verification system
Sub-account and linked wallet support
Reconciliation against venue's official curve with measured disagreement disclosure
Cost basis calculation with FIFO and weighted average methods
Exchange-carried basis import from Kraken and Coinbase
Public data analysis with no sign-up or key upload
Bitcoin-backed accounts
Free, self-hosted verification tools
What makes it different
Reconstructs complete trading history from chain data, not limited to venue API's ~30-hour window
Prints venue data disagreements rather than hiding them
Every number is re-derivable and reproducible from public venue data
Handles complex account types other tools miss or miscalculate
Signed fee handling prevents rebate miscounting
Bitcoin-backed verification - anyone can check signatures against the blockchain without trusting orangecheck
Open, public specifications under MIT license
Non-custodial - protocols never hold coins or keys
Self-hostable verification - protocols work offline without orangecheck's infrastructure
Basisproof
orangecheck