476355ad6d
Fix remaining undefined array access error on blockchain visualization page. When blockchainData exists but blocks is undefined, accessing .length would crash: - "can't access property 'length', e is undefined" CHANGES: 1. Blockchain page (blockchain/page.tsx): - Ensure blocks array always exists when API data is fetched - Provide fallback to empty array with verification object - Add null check before accessing blocks.length in conditional render This is the final fix for all frontend undefined array access issues. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>