Built a privacy-first crypto portfolio tracker after the Ledger breach exposed my home address — coinwatch.space
After the Ledger data breach leaked my home address, I got paranoid about how much plaintext data crypto tools hold on their servers — portfolio trackers are honestly a juicier target than a wallet vendor's shipping list, since they know your exact holdings, amounts, and timing.
So I built coinwatch.space:
- Privacy Vault — client-side AES-256-GCM encryption, no backdoor, not even we can see your numbers
- Tax reports — capital gains calculated per-country, not a generic CSV dump
- Loan/LTV tracking — alerts for crypto-collateralized loans (Aave, Compound, etc.) before liquidation
- Nostr login — no email required if you'd rather not hand one over
- Multi-language support (10 languages, including Esperanto)
Wrote the full story of why I built it here: https://medium.com/@lnsolutionsee/i-couldnt-find-a-private-crypto-portfolio-tracker-so-i-built-one-df60b8af5e64
Happy to answer questions about the encryption approach or anything else.