Tradable NFTs

NFT marketplace standard enabling peer-to-peer transfers with the "NFTMarketplace" standard tag and NFTPricingDenom

Category: Standards

Summary

Required standards: ["NFTMarketplace", "NFTs", "NFTPricingDenom:ubadge"]

• MUST include all three standards together

• NFTPricingDenom format: "NFTPricingDenom:" (sets pricing denomination for orderbook)

• MUST include a free transfer approval: fromListId: "!Mint", toListId: "All", initiatedByListId: "All", approvalId: "transferable-approval"

• Enables orderbook/marketplace integration

• Typically used with NFT collections

• Note: Legacy names "Tradable" and "DefaultDisplayCurrency" are still accepted for existing collections

Instructions

Tradable NFTs Configuration

When enabling trading for NFTs, follow these requirements:

Required Structure

1. Standards: MUST include "NFTMarketplace", "NFTs", and "NFTPricingDenom:ubadge"

   • "standards": ["NFTMarketplace", "NFTs", "NFTPricingDenom:ubadge"]

   • NFTPricingDenom sets the pricing denomination for orderbook display

   • Replace "ubadge" with your desired currency denom if different

2. Free Transfer Approval: Include a default collection approval for peer-to-peer transfers

   {
     "fromListId": "!Mint",
     "toListId": "All",
     "initiatedByListId": "All",
     "approvalId": "transferable-approval",
     "tokenIds": [{ "start": "1", "end": "18446744073709551615" }],
     "transferTimes": [{ "start": "1", "end": "18446744073709551615" }],
     "ownershipTimes": [{ "start": "1", "end": "18446744073709551615" }]
   }

Complete Example

{
  "updateStandards": true,
  "standards": ["NFTMarketplace", "NFTs", "NFTPricingDenom:ubadge"]
}

Tradable Gotchas

• MUST include all three standards together

• NFTPricingDenom format: "NFTPricingDenom:denom"

• This enables orderbook/marketplace integration

• Typically used with NFT collections

• The currency denom determines how prices are displayed in marketplaces

• Legacy names "Tradable" and "DefaultDisplayCurrency" still work for existing collections