I just learned about GNU Taler and wow, it's an interesting different direction for secure micropayments. Superficially it might seem kind of like Bitcoin, but very different in details: No blockchain, computationally efficient, a payment method rather than a currency, more anonymous for buyers, not at all anonymous for sellers. Not an anarchist or libertarian system: it relies on government regulators and supports taxing and auditing merchants without revealing customers' identities. 🤔