
Introducing the 4K Physical Guardian Protocol
The ability to connect the physical and on-chain worlds has long been one of the holy grails of blockchain. Though to date, attempts to bridge these worlds have been centralized, ad-hoc, and rife with misaligned incentives. At 4K, we’re building a decentralized protocol for connecting the on-chain and physical worlds. While a centralized approach would be easier, we believe that only a decentralized approach is capable of making physical assets a new, trusted web3 primitive. A decentralized a...

The 4 Different Types of NFTs for Bringing Real World Assets On-Chain
Bringing real world, physical objects on-chain has long been a “holy grail” for the world of crypto. NFTs and the underlying blockchain technology offer new forms of value creation, making a Web3 transition the next logical step for industries dealing in physical goods. There are a number of Web3 projects aiming to tether the physical world to the digital one. We’ve identified the strengths and weaknesses across different classes of “phygital” solutions to demonstrate where they succeed and w...

Why We’re Moving Our Blog to Mirror.xyz
TL;DR:Crypto-native: Posts are stored on-chain using a Web3 native protocol.Cryptographically Secure: Posts are owned by 4K and not by a centralized intermediary.Supports fellow builders: Embeds our work within the larger crypto ecosystem and supports those building the future of Web3.Greetings, crypto community! As Web3 continues to evolve, new tools are rapidly being created to provide decentralized versions of common Internet services like content management, blog hosting, and storage prov...
Unlocking value for physical assets in Web3. Physical NFT Minting & Logistics for Marketplaces, Brands, dApps & DeFi.

Introducing the 4K Physical Guardian Protocol
The ability to connect the physical and on-chain worlds has long been one of the holy grails of blockchain. Though to date, attempts to bridge these worlds have been centralized, ad-hoc, and rife with misaligned incentives. At 4K, we’re building a decentralized protocol for connecting the on-chain and physical worlds. While a centralized approach would be easier, we believe that only a decentralized approach is capable of making physical assets a new, trusted web3 primitive. A decentralized a...

The 4 Different Types of NFTs for Bringing Real World Assets On-Chain
Bringing real world, physical objects on-chain has long been a “holy grail” for the world of crypto. NFTs and the underlying blockchain technology offer new forms of value creation, making a Web3 transition the next logical step for industries dealing in physical goods. There are a number of Web3 projects aiming to tether the physical world to the digital one. We’ve identified the strengths and weaknesses across different classes of “phygital” solutions to demonstrate where they succeed and w...

Why We’re Moving Our Blog to Mirror.xyz
TL;DR:Crypto-native: Posts are stored on-chain using a Web3 native protocol.Cryptographically Secure: Posts are owned by 4K and not by a centralized intermediary.Supports fellow builders: Embeds our work within the larger crypto ecosystem and supports those building the future of Web3.Greetings, crypto community! As Web3 continues to evolve, new tools are rapidly being created to provide decentralized versions of common Internet services like content management, blog hosting, and storage prov...
Unlocking value for physical assets in Web3. Physical NFT Minting & Logistics for Marketplaces, Brands, dApps & DeFi.

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In order to buy an NFT on 4K, you need a place to store it. This is called a wallet. Your crypto wallet holds your crypto assets and is uniquely yours. With your wallet, you can:
Store your cryptocurrency
Pay for NFTs
Store your purchases, including any tokens purchased on 4K
It’s important to keep your wallet safe. If someone else gains access, they gain control over everything in it.
For now, the only supported self-custodial wallet is MetaMask. If you want to sell your token on a third party marketplace, we recommend using this method.
For a more advanced and more secure cold-wallet setup, we recommend using Ledger. We’ll soon post a tutorial on using a Ledger device.
Metamask is a crypto wallet browser extension for Ethereum and ETH compatible blockchains. It allows users to store Ether and other ERC-20 tokens to be used for transacting within the Web3 decentralized internet ecosystem.
Head to metamask.io
Click 'Download'
Click 'Install Metamask for Chrome'. Once installed you will be able to click the puzzle piece icon in the top right of your browser (next to your profile pic).
Click 'Get started'. For the purposes of this guide we'll assume you don't have a wallet. Click 'Create a wallet'.
Create a strong password according to Metamask's guidelines.
After you create a password you will receive a 'Secret Recovery Phrase.' This is a critical step as your 'Secret Recovery Phrase' is how you'll be able to restore your wallet if you ever lose access to your device. We recommend writing down the 12 words on a piece of paper and storing it in a secure location. Do not ever share your secret recovery phrase with anyone. Having multiple backups stored in secure locations is recommended.
Confirm your secret recovery phrase by clicking the words in the correct order then click 'Confirm'
Click 'All done'
That’s it! Your MetaMask wallet is now ready to go.
Go to 4K.com
Enter the Marketplace (make sure you are on Ethereum Mainnet)
Click Connect Wallet at top right of the screen
Follow instructions in Metamask pop-up
Congrats! You’re now connected to 4K and can start buying and selling physically-backed NFTs on the Marketplace.
Follow us on Twitter and Discord for the latest 4K news.
And be sure to check out our latest marketplace listings here!
In order to buy an NFT on 4K, you need a place to store it. This is called a wallet. Your crypto wallet holds your crypto assets and is uniquely yours. With your wallet, you can:
Store your cryptocurrency
Pay for NFTs
Store your purchases, including any tokens purchased on 4K
It’s important to keep your wallet safe. If someone else gains access, they gain control over everything in it.
For now, the only supported self-custodial wallet is MetaMask. If you want to sell your token on a third party marketplace, we recommend using this method.
For a more advanced and more secure cold-wallet setup, we recommend using Ledger. We’ll soon post a tutorial on using a Ledger device.
Metamask is a crypto wallet browser extension for Ethereum and ETH compatible blockchains. It allows users to store Ether and other ERC-20 tokens to be used for transacting within the Web3 decentralized internet ecosystem.
Head to metamask.io
Click 'Download'
Click 'Install Metamask for Chrome'. Once installed you will be able to click the puzzle piece icon in the top right of your browser (next to your profile pic).
Click 'Get started'. For the purposes of this guide we'll assume you don't have a wallet. Click 'Create a wallet'.
Create a strong password according to Metamask's guidelines.
After you create a password you will receive a 'Secret Recovery Phrase.' This is a critical step as your 'Secret Recovery Phrase' is how you'll be able to restore your wallet if you ever lose access to your device. We recommend writing down the 12 words on a piece of paper and storing it in a secure location. Do not ever share your secret recovery phrase with anyone. Having multiple backups stored in secure locations is recommended.
Confirm your secret recovery phrase by clicking the words in the correct order then click 'Confirm'
Click 'All done'
That’s it! Your MetaMask wallet is now ready to go.
Go to 4K.com
Enter the Marketplace (make sure you are on Ethereum Mainnet)
Click Connect Wallet at top right of the screen
Follow instructions in Metamask pop-up
Congrats! You’re now connected to 4K and can start buying and selling physically-backed NFTs on the Marketplace.
Follow us on Twitter and Discord for the latest 4K news.
And be sure to check out our latest marketplace listings here!
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