📦 ERC-1155: Multi-Token Standard

Learn how one contract can manage fungible and non-fungible tokens

Master ERC-721, ERC-1155, and their differences

⚡ ERC-1155: The Multi-Token Standard

ERC-1155 is a revolutionary standard that allows one contract to manage unlimited token types—both fungible and non-fungible. It enables batch operations, dramatically reducing gas costs for collections and gaming projects.

🎮

Gaming Perfect

Manage swords, potions, gold in one contract

📦

Batch Operations

Transfer 100 items in one transaction

💰

Gas Efficient

~70% cheaper than ERC-721 for collections

🎲 Interactive: Batch Transfer Simulator

Select multiple tokens and transfer them in a single batch operation. See gas savings in action!

Game Inventory (One ERC-1155 Contract)

Selection Summary:
No tokens selected

🔄 How Batch Transfers Work

1
safeBatchTransferFrom()

One function call transfers multiple token IDs and amounts in a single transaction

2
Gas Optimization

Contract loops through arrays internally—much cheaper than individual external calls

3
Atomic Success

All transfers succeed or all fail—no partial states

When to Use ERC-1155

  • Gaming (weapons, consumables, currencies in one place)
  • Large collections (10k+ NFTs with shared logic)
  • Mixed token types (NFTs + fungible tokens)
  • Frequent batch operations (airdrop to many users)

📊 Key Features

  • ID-based: Each token type has unique ID
  • Balances: Track quantity per ID per address
  • URI: Metadata stored per ID, not per token
  • Approval: setApprovalForAll for entire collection

💡 Key Insight

ERC-1155's power comes from its flexibility: each token ID can be fungible (supply > 1) or non-fungible (supply = 1). A gaming contract might have ID #1 = Gold (fungible), ID #2 = Legendary Sword (NFT, supply 1), and ID #3 = Health Potion (fungible). All managed efficiently in one place with gas-saving batch operations.

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