Questions tagged [opensea]

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ETH stuck in Polygon (Matic): Bridge smart contract

I was trying to make an NFT purchase on OpenSea and somehow I managed to send ETH to a "Polygon (Matic): Bridge" smart contract but didn't get the NFT I was expecting in exchange. Now I don'...
johnwolf1987's user avatar
1 vote
0 answers
9 views

Why OpenSea marketplace API return 'null' for signature?

I'm trying to fulfill an existing listing on OpenSea marketplace programmatically using seaport-js (SDK of seaport protocol). I used OpenSea's get_order to fetch an order but the signature is null. ...
Shuying's user avatar
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12 views

When not immediately pending after sendTransaction

If I code sendTransaction with opensea Fulfillment data, the transaction goes well, but after sending the transaction, sometimes it is not immediately pending, it is pending later. If I buy by hand ...
user126302's user avatar
0 votes
1 answer
39 views

How can I transfer an NFT that is stored on openSea programmatically?

I want to understand, how can I automate sending NFTs from any thirdparty hosts for example, opensea or thirdweb directly to the user who clicks on the claim NFT button on my website? I do not want to ...
Coding_templar's user avatar
1 vote
1 answer
24 views

NFT Not Show In Opensea Collection Profile

I am trying to buld ERC721 to my NFT. But the NFT not show in NFT opensea profile Collection. I am using openzeppelin library and the basic project is using Hashlib labs. The skenario is when i mint ...
angga danar's user avatar
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41 views

How does opensea create token Id for the opensea collection contract

I understand that the tokenId of the opensea collection contract is not randomly and it is encoding of different data . Can someone help me to find which all data opensea uses to create that tokenid
infamousdegen's user avatar
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I got Session proposal trying to log in to Opensea: Events: chainChanged, accountsChanged

Would really appreciate your help. Is that a scam? I cannot log in without resolving the wallet Session proposal. So far i have denied request several times. What happens is i Approve? NetworkEthereum ...
Homm3's user avatar
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0 answers
106 views

Make offer to opensea asset on polygon chain using opensea API

I have written this code using opensea API (not SDK) so far but it returns a 400 Bad Request error: const sdk = require("api")("@opensea/v2.0#xx4df2gljerlft1"); const web3 = ...
duskdusk13's user avatar
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1 answer
53 views

How to construct an OpenSea order hash in Java?

my code to construct an default order hash as follow: public class BuildTest { public static void main(String[] args) throws IOException { StructuredDataEncoder dataEncoder = new ...
221 1's user avatar
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0 answers
26 views

ERC1155 - add custom operators to operatorRegistry

I'm developing an ERC1155 upgradeable contract that has to be OpenSea compatible as well. One of the requests is to have an operator address that's not the owner, and another one is to have a trader ...
mdlapla's user avatar
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1 answer
58 views

Is it possible to create an OpenSea collection using their API?

I want to create a collection in OpenSea but using a php backend instead of using their platform. Is it possible to do this? I have been looking at their API documentation and I haven't been able to ...
Falcon Stakepool's user avatar
1 vote
1 answer
150 views

How to get hash and signature of payload parameters using java

I want to use openSea's api, but I don't know how to get the hash and signature of this json object using java. https://docs.opensea.io/reference/create-an-order { "parameters": { "...
yuta O's user avatar
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0 answers
82 views

Opensea seaport protocol works with Eip712 offline signatures only through permit method of tokens?

I try understand how offline signatures work with seaport protocol for example. Seaport use offline sign to make operations in token contract behalf signer of offline signature (eip712). But token ...
Peter Ivanoff's user avatar
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1 answer
128 views

How to mint random NFT token using ERC721SeaDrop?

I need your help with a problem. I am using ERC721SeaDrop smart contract provided by opensea. But it mints the token with a token id like 1,2,3 etc. I want it to generate random token ID for NFTs. So ...
Vinay Kharayat's user avatar
1 vote
1 answer
54 views

Is it possible to know if a NFT was sold in OpenSea?

Is it possible to detect, by looking at the transfer events, whether a NFT was sold from a Marketplace or not? Basically I want to know if, in these cases, the safeTransferFrom method notifies the ...
Falcon Stakepool's user avatar
0 votes
1 answer
34 views

Where does open sea and other website store NFT data?

Where are the pictures, traits and transactions stored that we see on NFT marketplaces and collection sites?
NFT_king's user avatar
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1 answer
21 views

Question on tokenUri

suppose I have 10 images in a folder, I got the CID of that folder by uploading it on pinata, what is the fastest way to get tokenURI for each images?
Hacek 's user avatar
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Specific Collection form OS Shared Storefront Collection

How can I get all the current NFT holder addresses of a specific collection that is part of the Opensea Shared Storefront Collection?
stefan's user avatar
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1 answer
45 views

What interface do I need for my contract to receive Bulk Transfer from OpenSea?

I have a smart contract that should be able to receive ERC721 tokens. I have implemented the onERC721Received and this works fine if I send one token at a time from OpenSea or from the ERC721 ...
trashrobber's user avatar
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0 answers
99 views

why Seaport Opeansea testnets API return "null" for signature?

I am trying to retrieve offers detail using seaport API for a given asset contract for a given token ID but it returns null for the signature field. My understanding is that this signature is the ...
Surbhi Audichya's user avatar
1 vote
0 answers
99 views

How can I accept a buy offer for a specific NFT from a given collection on OpenSea using a Solidity smart contract?

How can I accept a buy offer for a specific NFT from a given collection on OpenSea using a Solidity smart contract? I have an NFT collection X listed on OpenSea and there are several buy offers. I ...
Surbhi Audichya's user avatar
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1 answer
118 views

Null token URI for ERC721 metadata on OpenSea TestNets

I am relatively new to deploying ERC721 tokens for NFT collections and I have a quick question about why my token metadata isn't properly refreshing and showing the images, description, name and ...
OhItsPM's user avatar
  • 75
0 votes
1 answer
42 views

Whitelist and identity tracking of NFT holders

I am working on ERC1155 NFT collection and because of the regulation related to the project I am part of, we are required to allow only certain users to hold the NFT. For that reason, I want to ...
Ron Megini's user avatar
2 votes
2 answers
269 views

restrict the NFTs of my contract (ERC721) to be traded on marketplaces?

Are there tricks in solidity to prevent the NFTs minted by an ERC721 contract to be (a) not recognizable and (b) not being transferable by marketplaces like OpenSea, SuperRare. I see those possible ...
Majd TL's user avatar
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1 vote
1 answer
35 views

Fetch NFT listings from popular marketplaces

maybe this is not the right place to ask about this, but I don't know where to ask this question. So, for suggestions on where to ask, I would also be grateful. I have been looking for a way to fetch ...
Cosine's user avatar
  • 11
2 votes
1 answer
870 views

My NFT image doesn't appear on etherscan

I've created a simple ERC721 contract and minted some NFTs, as I mint the images are visible on opensea but not on etherscan. here is my contract, https://goerli.etherscan.io/address/...
Nishant Pacharne's user avatar
1 vote
1 answer
48 views

How to programatically sell items in OpenSea (Polygon network)?

I'm researching about how can I allow my users mint NFTs on Polygon network from my website (done), and to list those items in Opensea (in Polygon Network). Opensea SDK I was researching the Opensea ...
Alexander Herranz's user avatar
2 votes
0 answers
21 views

How do platforms like OpenSea sync ERC721 token info in an efficient manner?

I assume OpenSea syncs all ERC721 token info to a private database. Current NFT ownership APIs don't provide the kind of filtering mechanisms that are available on OpenSea. I'm wondering how exactly ...
leotron's user avatar
  • 31
2 votes
0 answers
173 views

Seaport order fulfillment is not verifying signature

@seaport devs I need your help. I have been stuck in an issue. I have been using Opensea Seaport contracts for my NFT marketplace order settlement. All stuff is done except signature verification. I ...
Umeraqeel's user avatar
2 votes
1 answer
65 views

Is it possible to track marketplace sales for an ERC721?

I know I can track events for smart contracts, such as Transfer and Approval for ERC20 and ERC721 or even ApprovalForAll for ERC721. I also know that I can track my own defined events for any smart ...
Falcon Stakepool's user avatar
0 votes
2 answers
2k views

I Can't Find my Collection on OpenSea Testnet

I recently deployed a smart contract to the testnet. You are able to buy NFTs using fake eth. I'm following this tutorial but when I deploy my contract to the testnet (new Alchemy App, New API key, ...
That_Coder's user avatar
0 votes
1 answer
84 views

What is an NFT collection?

Is there a specific EIP that allows for collections of NFTs to be created or are NFT collections completely off-chain? If there is a way to create an NFT collection (group of NFTs) on chain, how? Also,...
Henry Gagnier's user avatar
1 vote
1 answer
300 views

what this error and how to solve it with metamask wallet?

this error appears when the buyers buy nft item on opensea Internal JSON-RPC error. ( "code": -32016, "message": "The execution failed due to an exception.", "data&...
asd youa's user avatar
2 votes
1 answer
61 views

Listing large amount of NFTs up for English sale on Openseea

Since the release of latest Opensea API, support for English auctions has been removed (Source). I am therefore looking for an alternative, which would allow creating listings for large amount of NFTs....
Nal Luksic's user avatar
  • 1,069
2 votes
1 answer
52 views

What should the input parameter structure look like in validate(touple) function of Seaport contract?

I'm trying to call the validate() method of Seaport but can't find the correct form of inputs, as it always returns the error types/value length mismatch when calling on Etherscan. I'm calling the ...
Nal Luksic's user avatar
  • 1,069
3 votes
2 answers
369 views

How do i prevent users from selling NFTs they earned from my platform to any external marketplaces like openSea

I am building my platform where users will do several tasks to earn NFTs as a reward, I don't want them to sell these NFTs on any external marketplace. Is there a way through which I can restrict my ...
Talha Sajid Chaudhary's user avatar
2 votes
2 answers
261 views

using image_data for opensea's metadata instead of image

I understand it is not recommended, but I was curious about including the code for an SVG in image_data which would replace image per opensea's metadata standards page. This: { "description&...
chriscrutt's user avatar
0 votes
1 answer
223 views

How does the opensea bulk NFT transfer work?

I've tried looking at the smart contracts of the bulk transfer function but it confuses me? Like where is the transfer function? If someone could explain it to he that would be appreciated Here is the ...
Merc's user avatar
  • 15
0 votes
0 answers
97 views

Seaport smart contract signature

I created smart contract to buy NFT with Seaport and i use signature from seaport-js but I have an error like this: If I convert data to readable error I get this: 'InvalidSignature()'. Does anyone ...
Jérémy Combe's user avatar
1 vote
1 answer
21 views

Price not showing in marketplace after minted from smart contract

We have created a fronted which require client to fill in name,description,price and attach an image. After mint, name, description and image able to display in Opensea created, but price not showing. ...
John Joe's user avatar
  • 117
0 votes
1 answer
179 views

How do Opensea competitors (like Blur) subscribe to new NFT for-sale listings?

I assume Opensea's API/SDK is blocked and not accessible by Opensea competitors, like Blur. Now, when a new listing is created on Opensea, there is no on-chain transaction, just a gasless signature by ...
Donn Lee's user avatar
  • 113
0 votes
1 answer
40 views

NFT Not Showing Up

Hello I finished every step of the video tutorial titled "How to develop an NFT Smart Contract (ERC721) with Alchemy - Beginner | Road to Web3" until the part where we go to OpenSea testnet ...
zach king's user avatar
0 votes
1 answer
67 views

Why fee basis point is used?

Can someone explain to me why to calculate royalty I often see that marketplaces instead of common percentages use fee basis points? 1% = 100 bps I don't fully understand the advantage of this ...
AGJoYy's user avatar
  • 386
0 votes
1 answer
461 views

How to trade NFTs on Opensea market with smart contract solidity

I want to create a smart contract solidity who buy NFT on Opensea. I can't find explain documentation or exemple, except in javascript with OpenSea SDK. I wrote a code who buy nft with OpenSeaSdk: ...
Jérémy Combe's user avatar
1 vote
1 answer
191 views

Are there API ways to get the data about the offers on OpenSea? Without OpenSea API

I'll try to be clear! Let me have some address = "Ox.." I want to see all the information on the offers this address makes on OpenSea Are there ways to accomplish this using the alchemy API? ...
margos colas's user avatar
1 vote
0 answers
209 views

What are we signing in the 'signature' field for OpenSea API

There is a signature field here: https://docs.opensea.io/v2.0/reference/create-an-order I understand the caller/lister has a private key. But what exactly is the content of the message that they're ...
Majiick's user avatar
  • 135
1 vote
1 answer
88 views

Explanation for a three-way NFT transaction

I can't figure out why this transaction is the way it is. It involves 3 parties and 2 sales of an NFT. Here are the events: NFT Sells for 0.0244 from 06BBBB to C5320D. But no transfer happens. ...
Majiick's user avatar
  • 135
0 votes
1 answer
1k views

my nft image not showing in opensea testnet

when ever i mint an nft with my frontend dapp and check it on opensea i will just see the name without the nft image. here is my deploy.js file. this is the tutorial i am following https://dev.to/...
Anezichukwu Agusigbo's user avatar
0 votes
2 answers
548 views

How to query balance of ERC1155 without token id? (each tokenId is 77 characters long and non-sequential)

The tokenIds on the contract I want to query are 77 characters long each and don't seem to be in sequential order....is there a way to query the contract for balances and tokenIds without entering the ...
Stackaccount1's user avatar
0 votes
0 answers
191 views

How can I import an existing collection on OpenSea?

There used to be an option to import the contract on this page when clicking on three dots next to Create a Collection, but it seems to be gone. If I create a collection in a usual fashion, there ...
leotron's user avatar
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