🗻ScaleyValley

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Overview

ScaleyValley is the first multichain NFT marketplace where users can by NFT providing ERC20 tokens instead. There are three Valleys, one per chain:

Network	Valley name	Contract name	Feature
Ethereum	EtherValley	ScaleyValleyCollection	When token is on this chain NFT's level increases
Polygon	PolyValley	Hyp721	When token is on this chain NFT's agility increases
Optimism	OptiValley	Hyp721	When token is on this chain NFT's intellect increases

User can freely bridge a NFT from one Valley chain to another if his NFT needs features of other chain. User can buy NFT only for resources ERC20 tokens defined by ScaleyValley ecosystem:

Network	Token name	Ticker
Gnosis	GnosisRiver	WATER
Zksync	ZksyncForest	WOOD
Optimisim	OptimisticLight	OPTIC
Polygon zkEVM	PolyAir	AIR

There are 3 type of NFT which can be bought for 3 kinds of resource ERC20 tokens:

Kind	Initial price in resource ERC20	Description
Aquatique	100 WATER	Water-inspired explorer of valleys with the strongest agility perks
Druid	100 WOOD	Forests lord and protector inspiring forest beings to be strong. Has medium agility and intellect perks
Illuminator	100 OPTIC	Light enforced creature with mission to illuminate the valley. Has the strongest intellect perks
Hermes	1000 AIR	Hermes is fast as wind and nimble as the air. Has the strongest all perks

User can select any initial Valley he likes no matter of what NFT he has bought.

Technology stack

Resources chains

For ERC20 tokens we use L2 chains with corresponding L1 ERC20 tokens on Ethereum chain

L2 Chain name	Token name	Bridged with
Gnosis	GnosisRiver	TokenBridge AMB
Zksync	ZksyncForest	Zksync wallet tools in-app
Optimisim	OptimisticLight	Optimism SDK in-app integration

Valley chains

For ERC721 tokens we use HyperLane to bridge tokens among Valley chains. Main ERC721 contract is deployed on Ethereum network along with Hyp721Collateral utility contract, bridge utility Hyp721 contracts appear on Polygon and Optimism networks.

Network	Valley name	Contract name	Feature
Ethereum	EtherValley	ScaleyValleyCollection	Main issuer of tokens
Ethereum	EtherValley	Hyp721Collateral	Bridge-utility
Polygon	PolyValley	Hyp721	Bridge-utility
Optimism	OptiValley	Hyp721	Bridge-utility