Send a signed payment through Ethereum

For when Tazor's site or servers are unavailable. This page is one file: save it and open it from your own computer, or host it anywhere. It talks only to your wallet and to Whitechain's public RPC; nothing goes to Tazor.

On Tazor's Pay page, after approving: "Send via Ethereum" → "Copy signed payment". It starts with tazor-signed-payment:1: