Quote from: btchris on October 20, 2016, 08:05:19 PM

Out of curiosity, which altcoins?

Can't recall the name.

Quote from: btchris on October 20, 2016, 08:05:19 PM

What about the added requirement of a good CSPRNG source for every tx (not required by ECDSA), something which is more difficult to obtain in an isolated IoT environment w/o added (and unauditable) hardware support?

It's not needed, you already have a cryptographic hash function and publish SHA3(txData+secret) on the 1st step and reveal the secret on the 2nd when the network verifies that SHA3(secret) matches the spending address.

Quote from: btchris on October 20, 2016, 08:05:19 PM

There's also extra non-volatile state which much be maintained to commit the tx, another weak suit of IoT devices in general, correct?

Probably, depends on an implementation.

Quote from: btchris on October 20, 2016, 08:05:19 PM

ECDSA isn't that hard, otherwise hardware wallets wouldn't exist....

Can you imagine, IoT requires a more lightweight algorithms base.