Blockchain and Cryptocurrency
Columbia Business School
🪙
Tap the coin with your phone to sign in.
Hold the top of your phone against the coin. A notification will appear. Tap it, confirm your wallet, and an attendance NFT is minted to you.
Sign-in is open now for Wednesday, October 7, 2026.
Details
- Schedule
- Thursdays, 9:00 AM to 12:15 PM (America/New_York)
- Network
- Arbitrum Sepolia
- Contract
- 0x33820C178fb55581F69236f93a54dBE63d0197DF
- Roster
- Any wallet can sign in.