Portfolio

Open-source, private, watch-only.

cryptoseer

open-source watch-only wallet tracker

Bitcoin + Ethereum | Private by design

Open-source watch-only portfolio

Track Bitcoin and Ethereum without accounts, lock-in, or clutter.

Cryptoseer is a more private and simpler alternative to Delta: local-first wallet watchlists, transparent data sources, and focused analytics.

Open Portfolio Compare with Delta
  • Privacy First

    No account required. Wallet list is stored locally in your browser by default.

  • Transaction History

    Access detailed recent activity per wallet with status, direction, and explorer links.

  • Multi-Currency

    Switch between EUR and USD at any time with one click.

  • Portfolio ATH

    See the all-time high valuation (based on your current holdings) with the matching date.

  • Reliable Data Stack

    Coinbase Exchange pricing + history, Blockstream for BTC, Blockscout for ETH.

  • Open Source Mindset

    Transparent architecture and a minimal UX focused on everyday monitoring.

How It Works

  1. Add one or more Bitcoin or Ethereum addresses.
  2. Review balances, current valuation, and transaction history.
  3. Switch fiat currency and track ATH performance over time.
Cryptoseer is an open-source watch-only tracker built as a simpler alternative to Delta. Your addresses are queried against third-party APIs for balances, pricing, and history: Coinbase Exchange, Blockstream, and Blockscout.