nostr:npub12rv5lskctqxxs2c8rf2zlzc7xx3qpvzs3w4etgemauy9thegr43sf485vg you can attest to having ecash to the mint without revealing your identity right? Seems like this would be an ideal way to authenticate to a paid relay (using ecash) because it enables changing npubs but still proving you paid for write access or priveleged web of trust status, etc.