Ronin OpenSea Marketplace Fee Update

On May 1st 2025 for the Ronin blockchain, all orders will continue to have a 0.5% marketplace, but will be split between 3 different addresses.

Change: Marketplace Fee

Collection API

We return all fees for a collection as a fees object via the Collection API so you'll start to see the following:

"fees": [
        {
            "fee": 0.3, // used to be .5
            "recipient": "0x0000a26b00c1f0df003000390027140000faa719", // OS fee address, stays the same
            "required": true
        },
			  {
            "fee": 0.16,
            "recipient": "0x61461e094c04884217c6a4e897409626231aacc8",
            "required": true
        },
				{
            "fee": 0.04, 
            "recipient": "0x22cefc91e9b7c0f3890ebf9527ea89053490694e", 
            "required": true
        },
    ],

If your code is relying on this response field when generating payloads for order posting, you won't need to change anything.

Order Posting API

For the order posting endpoints (ex. creating an offer), you'll need to make sure that the updated fee values are included properly. Here's an example 1 WETH Seaport offer that has the combined fees included:

{
 "parameters": {
   "offerer": "...",
   "offer": [
     {
       "itemType": 1,
       "token": "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2",
       "identifierOrCriteria": 0,
       "startAmount": "10000000000000000000", // 1 WETH Offer
       "endAmount": "10000000000000000000"
     }
   ],
   "consideration": [
     {
       "itemType": 2,
       "token": "0xBC4CA0EdA7647A8aB7C2061c2E118A18a936f13D",
       "identifierOrCriteria": 1882,
       "startAmount": 1,
       "endAmount": 1,
       "recipient": "0x48AAbAb1e5224540dfD31E48DeD0Ba6725185C93"
     },
     {
       "itemType": 1,
       "token": "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2",
       "identifierOrCriteria": 0,
       "startAmount": "30000000000000000", // 0.3% OS Fee
       "endAmount": "30000000000000000",
       "recipient": "0x0000a26b00c1F0DF003000390027140000fAa719"
     },
     {
       "itemType": 1,
       "token": "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2",
       "identifierOrCriteria": 0,
       "startAmount": "16000000000000000", // 0.16%
       "endAmount": "16000000000000000",
       "recipient": "0x61461e094c04884217C6a4E897409626231aaCC8"
     },
     {
       "itemType": 1,
       "token": "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2",
       "identifierOrCriteria": 0,
       "startAmount": "4000000000000000", // 0.04%
       "endAmount": "4000000000000000",
       "recipient": "0x22cefc91e9b7c0f3890ebf9527ea89053490694e"
     }
   ],
		...
 },
 "signature": ...
}