# Hanzo Storage — Blockchain — Hanzo AI

> Store NFT metadata, user content, and application data on IPFS, Arweave, or Filecoin.

Available Now

# Hanzo Storage

Decentralized storage, simple API

Store NFT metadata, user content, and application data on IPFS, Arweave, or Filecoin. A simple API abstracts the complexity of decentralized storage.

### Global CDN

Content served from edge locations worldwide. Sub-100ms retrieval.

### IPFS Pinning

Pin content to IPFS with redundant storage across multiple providers.

### Permanent Storage

Arweave integration for truly permanent, immutable storage.

### Instant Uploads

Upload files and get a content-addressed URL immediately.

[Back to Web3 Overview](https://hanzo.ai/blockchain)

## Get Your API Key

Start building in under 5 minutes

HA

Failover

<50ms

Latency

100+

Chains

Start Building Free

View Documentation

No credit card required. Free tier includes 300M compute units/month.

Trusted by developers building:

DeFiNFTsPaymentsGamingAI Agents

## Key Capabilities

Everything you need, nothing you don&#x27;t.

### Global CDN

Content served from edge locations worldwide. Sub-100ms retrieval.

### IPFS Pinning

Pin content to IPFS with redundant storage across multiple providers.

### Permanent Storage

Arweave integration for truly permanent, immutable storage.

### Instant Uploads

Upload files and get a content-addressed URL immediately.

### NFT Metadata

Optimized for NFT metadata with ERC-721 and ERC-1155 standards.

### JSON Storage

Store and query JSON documents with automatic indexing.

### Versioning

Track content versions with IPNS for mutable references.

### Access Control

Encrypted storage with token-gated access controls.

### Gateway URLs

Get HTTP gateway URLs for easy integration with any application.

## Simple to Integrate

Get started with just a few lines of code. SDKs for every language.

Solidity

Node

Python

Go

Rust

C

C++

Ruby

NFTMetadata.sol

```
// SPDX-License-Identifier: MIT pragma solidity ^0.8.24; import "@openzeppelin/contracts/token/ERC721/ERC721.sol"; import "@openzeppelin/contracts/access/Ownable.sol"; /// @title NFTMetadata - NFT with IPFS/Arweave metadata storage /// @notice ERC-721 with decentralized storage integration contract NFTMetadata is ERC721, Ownable { // Base URI for IPFS gateway string public baseURI; // Token URI overrides for individual tokens mapping(uint256 => string) private _tokenURIs; // Storage provider tracking enum StorageProvider { IPFS, Arweave, Filecoin } mapping(uint256 => StorageProvider) public tokenStorageProvider; event MetadataUpdated( uint256 indexed tokenId, string uri, StorageProvider indexed provider ); event BaseURIUpdated(string oldURI, string newURI); constructor( string memory name, string memory symbol, string memory _baseURI ) ERC721(name, symbol) Ownable(msg.sender) { baseURI = _baseURI; } // Mint with IPFS metadata function mintWithIPFS( address to, uint256 tokenId, string calldata ipfsCID ) external onlyOwner { _safeMint(to, tokenId); _tokenURIs[tokenId] = string(abi.encodePacked("ipfs://", ipfsCID)); tokenStorageProvider[tokenId] = StorageProvider.IPFS; emit MetadataUpdated(tokenId, _tokenURIs[tokenId], StorageProvider.IPFS); } // Mint with Arweave metadata (permanent) function mintWithArweave( address to, uint256 tokenId, string calldata arweaveTxId ) external onlyOwner { _safeMint(to, tokenId); _tokenURIs[tokenId] = string(abi.encodePacked("ar://", arweaveTxId)); tokenStorageProvider[tokenId] = StorageProvider.Arweave; emit MetadataUpdated(tokenId, _tokenURIs[tokenId], StorageProvider.Arweave); } // Update metadata for dynamic NFTs function updateMetadata( uint256 tokenId, string calldata newURI, StorageProvider provider ) external onlyOwner { require(_ownerOf(tokenId) != address(0), "Token does not exist"); _tokenURIs[tokenId] = newURI; tokenStorageProvider[tokenId] = provider; emit MetadataUpdated(tokenId, newURI, provider); } // Override tokenURI to support individual URIs function tokenURI(uint256 tokenId) public view override returns (string memory) { require(_ownerOf(tokenId) != address(0), "Token does not exist"); string memory _tokenURI = _tokenURIs[tokenId]; if (bytes(_tokenURI).length > 0) { return _tokenURI; } return string(abi.encodePacked(baseURI, Strings.toString(tokenId))); } // Update base URI function setBaseURI(string calldata newBaseURI) external onlyOwner { emit BaseURIUpdated(baseURI, newBaseURI); baseURI = newBaseURI; } }
```

## Built For

### NFT Collections

Store metadata and images for NFT collections with guaranteed availability.

### dApp Assets

Host frontend assets, documentation, and user-generated content.

### Data Backup

Permanent backup of important documents and records on Arweave.

### Social Platforms

Store user posts, media, and profiles with decentralized ownership.

## Start Building with Hanzo Storage

Get your free API key and ship your first request in under 5 minutes. No credit card required.

Get Your API Key

[Explore All Web3 Products](https://hanzo.ai/blockchain)

## Open source

License: Apache-2.0[hanzoai/s3](https://github.com/hanzoai/s3)

## Get Hanzo Storage

Distributed object storage

[Deploy to Cloud](https://console.hanzo.ai/deploy)[Self-host](https://docs.hanzo.ai/docs/storage)