mirror of https://github.com/zcash/zips.git
Add a consensus rule that the (zero-valued) coinbase transaction output of the genesis block cannot be spent.
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
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@ -9159,6 +9159,8 @@ $\versionField \geq 4$ and $\nShieldedSpend + \nShieldedOutput > 0$.
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\item A \transaction{} \MUSTNOT spend a \transparent output of a \coinbaseTransaction
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from a \block less than 100 \blocks prior to the spend. Note that \transparent outputs of
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\coinbaseTransactions include \foundersReward outputs \canopy{and \transparent \fundingStream outputs}.
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\item A \transaction{} \MUSTNOT spend an output of the \genesisBlock{} \coinbaseTransaction. (There is one
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such zero-valued output, on each of \Testnet and \Mainnet.)
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\overwinteronwarditem{\nExpiryHeight{} \MUST be less than or equal to 499999999.}
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\overwinteronwarditem{If a \transaction is not a \coinbaseTransaction and its \nExpiryHeight{} field
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is nonzero, then it \MUSTNOT be mined at a \blockHeight greater than its \nExpiryHeight.}
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@ -10881,6 +10883,8 @@ Peter Newell's illustration of the Jubjub bird, from \cite{Carroll1902}.
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\item Add a missing consensus rule that has always been implemented in \zcashd: there
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must be at least one \transparentOutput, \outputDescription, or \joinSplitDescription
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in a \transaction.
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\item Add a consensus rule that the (zero-valued) \coinbaseTransaction output of the
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\genesisBlock cannot be spent.
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\item Define \SproutChainValuePoolBalance\sapling{ and \SaplingChainValuePoolBalance,} and include
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consensus rules from \cite{ZIP-209}.
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\sapling{
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