Cryptocurrency icons (BTC/ETH/tokens)

[NikolayMetchev]

Goal

Display cryptocurrency icons (BTC, ETH, tokens, etc.) once crypto support lands.

Legal context

Much easier than bank logos — crypto icons are mostly open-source / community-licensed (often CC0 / public domain). Low risk.

Asset sources

Source	What	License
cryptocurrency-icons (recommended bundle) https://github.com/spothq/cryptocurrency-icons	~450 coins, SVG + PNG, color & mono	CC0
cryptofonts https://cryptofonts.com	Large set, icon font + SVG	Free
CoinGecko API	Per-coin logo URLs	Free tier; attribution
CoinMarketCap API	Coin logos	Free tier
Token Lists https://tokenlists.org	ERC-20 token logos w/ contract address	Open

Recommendation

• Bundle cryptocurrency-icons (CC0) for the top ~100 coins → offline, instant, no attribution required.
• Fall back to CoinGecko logo URL (cached) for the long tail / new tokens.
• For ERC-20 / chain tokens, resolve via Token Lists by contract address.

Proposed resolution logic

getCryptoIcon(symbol):
  1. bundled cryptocurrency-icons (CC0) for top coins   # offline, instant
  2. else CoinGecko logo URL, cached                    # long tail
  3. else generic Lucide "coins"

Tasks

• Add cryptocurrency-icons bundle for top coins.
• Implement getCryptoIcon with CoinGecko fallback + cache.
• Token Lists resolution for ERC-20 tokens (by contract).
• Generic coins fallback (see generic-icons issue).