user41513: what is the main difference between Zerocoin vs. Zerocash ?  are they the same ? Or two different protocols ? If they are two different protocols, what are similarities ?

user48884: Zerocoin is a proposed extension on Bitcoin to make Bitcoin more private. Zerocoin only hides the origin of a payment, the destination and amounts are still public.
Zerocash is a further extension of the zerocoin protocol which hides the destination and amounts. Zerocash transactions are more compact than zerocoin transactions.
Zcash is an implementation of the zerocash protocol onto a new altcoin. Both Zerocoin and Zerocash were intended for extensions to Bitcoin (they would require a fork). However zcash is just an altcoin (it began as a software fork of Bitcoin) with the zerocash protocol on top.

41513: <p>what is the main difference between <strong>Zerocoin</strong> vs. <strong>Zerocash</strong> ?  are they the same ? Or two different protocols ? If they are two different protocols, what are similarities ?</p>
 48884: <p>Zerocoin is a proposed extension on Bitcoin to make Bitcoin more private. Zerocoin only hides the origin of a payment, the destination and amounts are still public.</p>

<p>Zerocash is a further extension of the zerocoin protocol which hides the destination and amounts. Zerocash transactions are more compact than zerocoin transactions.</p>

<p>Zcash is an implementation of the zerocash protocol onto a new altcoin. Both Zerocoin and Zerocash were intended for extensions to Bitcoin (they would require a fork). However zcash is just an altcoin (it began as a software fork of Bitcoin) with the zerocash protocol on top.</p>
