The Physical-Digital Bridge
Store Physical Assets On-Chain.
4K is the world’s most trusted way to bring real-world items on-chain. The 4K Protocol enables anyone to freely trade physical assets across decentralized blockchains as physically-backed NFTs.
$10 million secured
Total assets secured and growing quickly
Backed by the best
PLUG INTO DEFI
Unlock new ways to leverage your physical assets
Fractionalization
Synthetics
Borrowing & Lending
Interoperability
LOW TRANSACTION FEES
Avoid high fees that come with legacy Web2 platforms
1% Seller Fee
Buyer Pays Gas
No Chargebacks
Instant Settlements
TOKENIZED MERCH
Tokenize your merchandise for the Web3 era
Build value for brand evangelists
Hand off inventory and shipping logistics
Plug into Web3 by converting your product line into NFTs
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Two core components
Marketplace + Protocol
4K consists of a marketplace and protocol that are designed to seamlessly on-ramp physical assets.
Marketplace
Meet our Physical NFT Marketplace
The 4K Marketplace is a decentralized Physical NFT exchange and aggregator. Discover and swap assets across chains using the full power of Web3.
Low fees
Only 1% fee for sellers. Buyer pays gas. Far better than legacy Web2 platforms.
Built for Physical Assets
Seamless transactions for on-chain physical items. Buy and sell without managing an IRL inventory.
Non-Custodial
You own the items. Redeem your physically-backed NFT for the physical asset at any time.
Trustless
Off-chain order books. On-chain settlements. No middleman.

Protocol
The 4K Protocol Vision
The 4K Protocol is built with interoperability, decentralization, and composability in mind to support an ecosystem of people, projects, platforms, and communities.
Guardians
Guardians are nodes on the network that store physical assets and approve minting of physically-backed NFTs.
Physical Validators
Physical Validators are nodes on the network that coordinate authenticators and appraisers to determine authenticity and asset value.
Physical Oracles
Audit Oracles keep Guardians accountable by physically auditing the assets stored. Physical Asset Pricing Oracles provide a price feed to enable DeFi integrations.
Interoperability
The 4K Protocol is the bridge that enables physically-backed NFTs to move across multiple L1s and L2s without a working bridge. Even on non-EVM compatible blockchains.

Live Networks
4K Protocol and NFTs are Currently Supported On
Get involved
Help us build the future.
Become a network node or explore branded partnerships. Get incentivized for your contributions.