1. The Last-Mile Problem Vitalik Finally Fixed On stage in Buenos Aires, Vitalik Buterin opened with a confession: Ethereum has world-class cryptography, a battle-tested L1, and more zk papers than most countries have roads—yet using it still feels like doing your taxes in a command-line terminal. Kohaku—Japanese for “amber,” the stuff that traps and preserves—is the Foundation’s answer. It is not another mixer, not another L2, but a wallet-level privacy toolkit: a Lego box of modular SDKs an...

1. The Last-Mile Problem Vitalik Finally Fixed On stage in Buenos Aires, Vitalik Buterin opened with a confession: Ethereum has world-class cryptography, a battle-tested L1, and more zk papers than most countries have roads—yet using it still feels like doing your taxes in a command-line terminal. Kohaku—Japanese for “amber,” the stuff that traps and preserves—is the Foundation’s answer. It is not another mixer, not another L2, but a wallet-level privacy toolkit: a Lego box of modular SDKs an...