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Sean Bowe 2019-03-14 19:32:12 -06:00
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zip-???.rst → zip-0210.rst
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@ -1,6 +1,6 @@
::
ZIP: ???
ZIP: 210
Title: Prohibit Negative Shielded Value Pool
Author: Sean Bowe <sean@z.cash>
Category: Consensus
@ -13,9 +13,9 @@ Terminology
The key words "MUST", "SHOULD", "SHOULD NOT", and "MAY" in this document are to be interpreted as described in
RFC 2119. [#RFC2119]_
The "Sprout value pool", as described by section 4.11 of the Zcash Protocol Specification [#protocol]_, is the sum of all previous transactions' ``vpub_old`` fields subtracted by the sum of all previous transactions ``vpub_new`` fields.
The "Sprout value pool balance", as implied by section 4.11 of the Zcash Protocol Specification [#protocol]_, is the sum of all previous transactions' ``vpub_old`` fields subtracted by the sum of all previous transactions ``vpub_new`` fields.
The "Sapling value pool", as described by section 4.12 of Zcash Protocol Specification [#protocol]_, is the negation of the sum of all previous transactions' ``valueBalance`` fields.
The "Sapling value pool balance", as implied by section 4.12 of Zcash Protocol Specification [#protocol]_, is the negation of the sum of all previous transactions' ``valueBalance`` fields.
Abstract
========
@ -32,7 +32,9 @@ It would be preferable for the network to reject blocks that result in the afore
Specification
=============
If the "Sprout value pool" or "Sapling value pool" were to become negative as a result of accepting a block, then all nodes MUST reject the block as invalid.
If the "Sprout value pool balance" or "Sapling value pool balance" were to become negative as a result of accepting a block, then all nodes MUST reject the block as invalid.
Nodes MAY relay transactions even if one or more of them cannot be mined due to the aforementioned restriction.
Deployment
==========