Kitties: Universal Creator pattern to enforce unique DNA #210
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This PR prototypes a way for ordinary users to mint Kitties from scratch through a transaction. The minting user must pay a fee (which is currently fixed, but this could easily be extended).
Unique DNA is enforced by requiring that every kitty minting transaction be sequenced by interacting with the one and only universal creator. The universal creator dictates the new kitties DNA (actually the blake2 preimage of its DNA).
One side effect of this design is that in times when many users want to mint kitties, they will all be racing for the universal creator. This problem is ubiquitous in the UTXO space and it can be engineered around by, for example, having a splitable creator.
@philoniare @AltiMario