42

42. A curatorless NFT collection.

A non-upgradable ERC-721 collection with an on-chain baseMetadataURI pointing to IPFS. Built with Foundry.

Features:

• ERC-721 with immutable baseMetadataURI set at deploy time
• Limited supply (1024 maximum)
• Fixed mint fee
• Whitelist only

Collection Preview

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IPFS CIDs

• Mainnet metadata CID: QmXTn6YvXZgNmNzyBN19RgYgpG6YeZNnTwo1zWbHSb8x5b
• Sepolia metadata CID: QmbtxQySbQcGxMUxofMhoxdevKeQMjE9i6xuWsSoLnJbrw
• Content supply: mainnet 1..1024, sepolia 1..128
• Token URI shape: ipfs://<metadataCID>/<tokenId>

---

IPFS pipeline

1. Upload images (recursive):

   cd content/mainnet/images
   ipfs add -r .
   # Save CID if you reference images by their own tree

2. Upload metadata (recursive):

   cd content/mainnet/metadata
   ipfs add -r .
   # This CID becomes your baseMetadataURI

3. Upload images for Sepolia (recursive):

   cd content/sepolia/images
   ipfs add -r .
   # Save CID if you reference images by their own tree

4. Upload metadata for Sepolia (recursive):

   cd content/sepolia/metadata
   ipfs add -r .
   # This CID becomes your baseMetadataURI for Sepolia

---

Build & test

forge build
forge test -vv

---

Deploy & verify

Export your environment variables:

export RPC_URL=""
export ETH_FROM="0xYourDeployer"
export PRIVATE_KEY="0xYourPrivateKey"
export ETHERSCAN_API_KEY="..."

# MintGuard deployment parameters
export FEE="42000000000000000" # 0.042
export VOUCHER_SIGNER="0xYourSigner"
export PROXY_OWNER="0xYourProxyOwner"
export MINT_GUARD_OWNER="0xYourMintGuardOwner"

# NFT42 deployment parameters
export BASE_METADATA_URI="ipfs://QmYourMetadataCID/"  # Your IPFS metadata CID
export MAX_TOKENS="1024"                              # Maximum number of tokens
export MINT_GUARD_ADDRESS="0xYourMintGuardAddress"    # Set after MintGuard deployment

Deploy MintGuard first

# Deploy MintGuard
forge script script/DeployMintGuard.s.sol \
  --rpc-url $RPC_URL --broadcast \
  --verify --sender $ETH_FROM --private-key $PRIVATE_KEY --etherscan-api-key $ETHERSCAN_API_KEY

# Update MINT_GUARD_ADDRESS with the deployed address
export MINT_GUARD_ADDRESS="0xDeployedMintGuardAddress"

Deploy NFT42

# Deploy NFT42
forge script script/DeployNFT42.s.sol \
  --rpc-url $RPC_URL --broadcast \
  --verify --sender $ETH_FROM --private-key $PRIVATE_KEY --etherscan-api-key $ETHERSCAN_API_KEY

Sign Voucher

To create a voucher for minting, use the signing script:

# Generate the voucher signature
forge script script/SignVoucher.s.sol --rpc-url $RPC_URL

Mint with Voucher

To both generate the voucher and send the mint transaction:

# Mint NFT using voucher (generates signature and sends transaction)
forge script script/MintWithVoucher.s.sol \
  --rpc-url $RPC_URL --broadcast \
  --sender $ETH_FROM --private-key $PRIVATE_KEY

This script will generate the voucher signature and automatically send the mint transaction with the correct fee.

Sepolia Deployment

• NFT42: 0xF7f7996ce30179CDe83699417D49F405d742c0F1
• MintGuard: 0xb0cbda6f91a0d9215db1b7e662ba31c8b312cc54

Contracts deployed and verified on Sepolia for testing.
Use Sepolia metadata CID for token URIs and content range (1..128).

Security Audit

The 42 NFT collection has undergone a comprehensive security audit by Nick Bailo to ensure the safety and reliability of the smart contracts.

• Security Audit Report - In-depth analysis of the entire contracts.

Links

• Website: LTV
• Protocol implementation: GitHub Repository
• Documentation: Protocol Documentation
• Twitter: @ltvprotocol