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Bridging	Blockchains &	GANs
Blockchain	--- The	Distributed	Ledger
Blockchain	→ Consensus protocol	in	the	P2P	
distributed ledger.
• Permits transactio...
Ethereum	&	Smart	Contracts
• Goal:	Store	any customized	information	on	the	blockchains
• Smart	contracts:
• Concept	introd...
Cryptokitties	-- the	first	ERC721*	game
*ERC721	Standard:	crypto-collectable	tokens	on	ETH	blockchains Images	are	from	htt...
But	Huston,	we	have	problems
Cats	composed	of	8	hand-crafted	parts	→	Low	Diversity
Images	are	from	https://www.cryptokitti...
Problems	in	ERC721	games
→Genome	mapping	is	discrete
→ Child	can	only	get	whole	parts	from	
its	parents
→	not	a	good	hered...
(Large)	Problems	in	ERC721	games
• Genome	determine	parts	individually
→		Kitty	value	depending	on	its	parts,	
not	the	kit...
Crypko:	A	GAN	based	ERC721	Game
Hand-crafted	image	
generation
GAN	solves	all	above	
issues
Crypko: https://crypko.ai
Crypko:	A	GAN	based	ERC721	Game
High	resolution	
generated	images
Genome
Interpolation	in	Crypko	space
Video	link:	https://youtu.be/AXAouosx95Y
Crypko:	Encoding	and	Hereditary	System
All	images	here	are	from	MakeGirlsMoe	public	model.
A	bionic	mechanism
• Dominant	g...
Crypko
• GAN	→	High	Quality and	Diversity
• Hereditary	system	→	Consistent
• Genome	determines	the	Entirety	
→	Pricing	inf...
Yanghua	Jin (Fudan University)
Huachun Zhu	(Fudan University)
Jiakai Zhang	(Carnegie	Mellon	University)
Yingtao	Tian	(Ston...
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Crypko: bridging blockchains and GANs

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Crypko: bridging blockchains and GANs
https://crypko.ai

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Crypko: bridging blockchains and GANs

  1. 1. Bridging Blockchains & GANs
  2. 2. Blockchain --- The Distributed Ledger Blockchain → Consensus protocol in the P2P distributed ledger. • Permits transactions to be gathered into blocks and recorded • Allows the resulting ledger to be accessed by different servers • Cryptographically chains blocks in chronological order Node A Node B Node CNode D Node E
  3. 3. Ethereum & Smart Contracts • Goal: Store any customized information on the blockchains • Smart contracts: • Concept introduced by Ethereum • Execution of Smart Contracts stores predefined tokens • Open and Decentralized applications are made possible!
  4. 4. Cryptokitties -- the first ERC721* game *ERC721 Standard: crypto-collectable tokens on ETH blockchains Images are from https://www.cryptokitties.co
  5. 5. But Huston, we have problems Cats composed of 8 hand-crafted parts → Low Diversity Images are from https://www.cryptokitties.co
  6. 6. Problems in ERC721 games →Genome mapping is discrete → Child can only get whole parts from its parents → not a good hereditary system Images are from https://www.cryptokitties.co
  7. 7. (Large) Problems in ERC721 games • Genome determine parts individually → Kitty value depending on its parts, not the kitty itself • Rare genes easily controllable by game developer → decentralization at risk Images are from https://www.cryptokitties.co
  8. 8. Crypko: A GAN based ERC721 Game Hand-crafted image generation GAN solves all above issues Crypko: https://crypko.ai
  9. 9. Crypko: A GAN based ERC721 Game High resolution generated images Genome
  10. 10. Interpolation in Crypko space Video link: https://youtu.be/AXAouosx95Y
  11. 11. Crypko: Encoding and Hereditary System All images here are from MakeGirlsMoe public model. A bionic mechanism • Dominant genes and Recessive genes in conditional variables • Meiotic recombination and mutation • 294 bits genome, affordable storage on the blockchain • Derivatives look smooth, compare to their origins
  12. 12. Crypko • GAN → High Quality and Diversity • Hereditary system → Consistent • Genome determines the Entirety → Pricing inferenced by subjective judgement • GAN latent space not decomposable → Not controllable, better Decentralization
  13. 13. Yanghua Jin (Fudan University) Huachun Zhu (Fudan University) Jiakai Zhang (Carnegie Mellon University) Yingtao Tian (Stony Brook University) Minjun Li (Fudan University) Chunqi Zhao (University of Tokyo) Zhihao Fang (Carnegie Mellon University) Crypko Beta on Rinkeby Testnet comes in May!

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