As she approached the entrance to the club, she gave the frame of her new prescription AR glasses a gentle squeeze. When she got to the door, it appeared to turn green, indicating recognition that she was over 21 years of age. Then, a message appeared along with a friendly voice asking for the 5 ADA (cryptocurrency) cover charge. She shook her head yes. A moment later, the door opened, which indicated that the transaction had cleared. And so begins a story about life in a trustless, decentralized world—a tale from under the Merkle tree.