These sell orders are available via the OpenSea API. Opensea supports many wallets, but the most common one is Metamask for desktop and Coinbase for mobile. The winner was @countertrademoi for 23.1 WETH, the highest bid that we were able to match. The OpenSea hack exploited the Wyvern Protocol, which underpins most NFT smart contract processes. Crypto-related hacks are on the rise, with the $320 million solana wormhole attack an example. the code is?enable_supply=true and you just stick it in the external link box. WYV can be held in and transferred between Ethereum wallets and smart contracts. */, /* Expiration timestamp - 0 for no expiry. Learn more about Stack Overflow the company, and our products. rev2023.3.1.43269. */, /* This overlaps with bytes already set but is still more efficient than iterating through each of the remaining bytes individually. This smart contract facilitates NFT sales by trading a user's NFT ownership on the Ethereum network for cryptocurrency ownership or vice versa. OpenSea: Wyvern Exchange v2. * @param hash Order hash (already calculated, passed to avoid recalculation), /* Not done in an if-conditional to prevent unnecessary ecrecover evaluation, which seems to happen even though it should short-circuit. Has a circulating supply, and the Wyvern ERC20 token ( WYV ) and. ETH Price: $1,648.32 (+1.65%) Gas: 24 Gwei. In the case of OpenSea, the attacker tricked some of the NFT owners into selling their NFTs by clicking on a link that created a transaction they were asked to sign with their browser-based wallet. Browse, create, buy, sell, and auction NFTs using OpenSea today. With delegatecall, the attackers contract was able to perform transactions on behalf of the proxy contracts. You can also use a DEX (Decentralized Exchange) such as Uniswap to wrap Ether. Also, NFT's are probably here to stay, so learning about them is only going to help you. This order on the mail consisted of the phishing attackers address and calldata, which was legitimately signed by the phished user. If so, when and how? A wyvern is a mythical two-legged dragon with a barbed tail. */, /* Assert taker fee is less than or equal to maximum fee specified by buyer. Many of those articles suggested that if the seller has very few art pieces in the collections, and/or sold very less work, and/or has a very low floor price, then that seller is definitely a scammer. OpenSea was in the process of updating its contract system when the attack took place, but OpenSea has denied that the attack originated with the new contracts. */, /* Auction extra parameter - minimum bid increment for English auctions, starting/ending price difference. Why does CryptoPunks does not use the Wyvern contract on OpenSea? */, /* Sell-side order must be settleable. The assets will include everything from utility tokens, all the way to NFTs. For general information on the Wyvern project, please see the website. Writing on Twitter shortly before 3AM ET, OpenSea CEO Devin Finzer said the attacks had not originated from OpenSeas website, its various listing systems, or any emails from the company. In order to stay one step ahead of such attacks, following safe practices can go a long way. It checks to see if sell and buy orders match and are still valid. This is done prior to fee payments to that a seller will have tokens before being charged fees. You can read more about this hacking attempt by clicking on the link HERE. Planned Maintenance scheduled March 2nd, 2023 at 01:00 AM UTC (March 1st, How to access the price nft asset is being sold for in your NFT contract? Weth stands for wrapped Ether and has the exact same value as Ether. These proxy contracts use delegatecalls to call the attackers contract, which the transfer targets. The blockchain really is just one ledger or I think of it as a receipt. Opensea is safe, but there are some scams you should be aware of. LinkedIn and 3rd parties use essential and non-essential cookies to provide, secure, analyze and improve our Services, and (except on the iOS app) to show you relevant ads (including professional and job ads) on and off LinkedIn. Trezor is the world's original Bitcoin hardware wallet, protecting coins for thousands of users worldwide. Drops on OpenSea: An Immersive and Secure Minting Experience September 19, 2022 Since our founding in 2017, OpenSea has become the best place to explore the vast world of NFTs. Can be done instantly. Smart contract in Ethereum Mainnet 0x7be8076f4ea4a4ad08075c2508e481d6c946d12b .Address has annotations WyvernExchange, OpenSea.io, Collectibles, Marketplace, NFT, OpenSea Therefore, I can check the contract code of this proxy and find out the address of its user. Thinking about how something will benefit someone else then reverse engineering how to deliver that is a good thing! / Sign up for Verge Deals to get deals on products we've tested sent to your inbox daily. A JavaScript library for crypto-native ecommerce: buying, selling, and bidding on any cryptogood. We don't believe it's connected to the OpenSea website. Weth does allow more flexibility and helps make transactions easier. Although I am not sure about the detail, I guess for the proxy, a signature is required to verify that such authorization is really issued by the token owner. OpenSea creates a shadow account for all users in order to provide zero-fee listing and minting. The open-source game engine youve been waiting for: Godot (Ep. Finzer said internally OpenSea believes the hacker exploited a flaw in the Wyvern Protocol. Create an account to follow your favorite communities and start taking part in conversations. */. Technical details can be seen in this thread. By hitting the right URL, we should be able to immediately view one of our items on OpenSea. So I want to know: Does OpenSea help to create a proxy contract for users? * @dev Call atomicMatch - Solidity ABI encoding limitation workaround, hopefully temporary. */, /* Delegate call could be used to atomically transfer multiple assets owned by the proxy contract with one order. The general rule of thumb is it's ok to have a small amount of crypto in a hot wallet, it does make trading easier. * @dev The Ownable constructor sets the original `owner` of the contract to the sender. * @param sellSig Sell-side order signature, /* Ensure buy order validity and calculate hash if necessary. Fully open-source The Wyvern Protocol codebase is open source, permissively licensed, and third-party audited. You also have to approve access to each transaction before the system can access any of the assets you own. Investing is speculative. Other Settings:-NA-Switch to Opcodes View Similar Contracts. This blue verification checkmark just means the Opensea team verified the account is real and it's safe for people. * @dev Return whether or not two orders' calldata specifications can match, * @param buyCalldata Buy-side order calldata, * @param buyReplacementPattern Buy-side order calldata replacement mask, * @param sellCalldata Sell-side order calldata, * @param sellReplacementPattern Sell-side order calldata replacement mask, * @return Whether the orders' calldata can be matched. Block Uncle Number Difficulty Gas Used . If you click on this link then you can see the contract address and this is where the NFT was produced or minted from. How did StorageTek STC 4305 use backing HDDs? Let's break down each component. This process is called proxy delegation. How do I fix? * @param newOwner The address to transfer ownership to. */, /* Static calls are intentionally done after the effectful call so they can check resulting state. Still, many details of the attack remain unclear particularly the method attackers used to get targets to sign the half-empty contract. And an additional question: Given a proxy contract, is it possible to find out the corresponding OpenSea user? one of the most valuable companies of the NFT boom, Mark Zuckerberg says Meta now has a team building AI tools and personas, Whoops! This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. After talking to those affected, OpenSea decided a new Wyvern 2.3 contract was not used in the phishing attack, its CEO said.Finzer said it had also ruled out phishing via clicking on the OpenSea site's banner; clicking on a faked OpenSea email; or using the platform's listing migration tool. Wyvern can be deployed on any EVM-based blockchain, allowing developers to power their asset exchange. The hackers likely used "phishing" in which an official communication is faked to look like the real thing to fool NFT owners into signing, OpenSea believes. For a limited time, we've dropped our OpenSea fee to 0%. */. Keep reading and I'll share the 3 largest scams to watch out for. */, * @dev Change the minimum maker fee paid to the protocol (owner only), * @param newMinimumMakerProtocolFee New fee to set in basis points, * @dev Change the minimum taker fee paid to the protocol (owner only), * @param newMinimumTakerProtocolFee New fee to set in basis points, * @dev Change the protocol fee recipient (owner only), * @param newProtocolFeeRecipient New protocol fee recipient address, * @param amount Amount of protocol tokens to charge, * @dev Execute a STATICCALL (introduced with Ethereum Metropolis, non-state-modifying external call), * @param calldata Calldata (appended to extradata), * @param extradata Base data for STATICCALL (probably function selector and argument encoding), * @return The result of the call (success or failure), * Calculate size of an order struct when tightly packed, * @param order Order to calculate size of, * @dev Hash an order, returning the canonical order hash, without the message prefix, /* Unfortunately abi.encodePacked doesn't work here, stack size constraints. To sell an item, you grant control of some assets to the proxy and sign approval of particular transactions. With OpenSea.js, you can easily build your own native marketplace for your non-fungible tokens, or NFTs. But I can't understand how it is works. Wyvern 's market cap i they will take your money but there is no warranty tomorrow your collection you invest wont be deleted. Using Wyvern protocol, in Opensea, the exchange smart contract will interact with the user proxy smart contract. The artwork that he sold for tens of thousands of dollars then got sold for 6 million dollars. */, /* Deal with the last section of the byte array. According to the OpenSea announcement, NFT listings created before Feb. 18 will automatically expire within a week, by Feb. 25 at 7:00 pm UTC: "This new upgrade will ensure old, inactive listings. OpenSea expects a public property called name in order to display the proper Name of the Collection instead of a static label Unidentified contract. */, /* Maker protocol fee of the order, unused for taker order. * @dev Call calculateCurrentPrice - Solidity ABI encoding limitation workaround, hopefully temporary. Contract Internal Transactions as a result of contract execution on the Ethereum blockchain. */, /* Amount that must be sent by buyer (for Ether). The truth is when it comes to ALL cybercrimes the human really is the weakest link. It is an ERC-20 compatible version of Ether. Wyvern Exchange v2. This can be found at testnets.opensea.io. * @dev Allows the upgradeability owner to upgrade the current implementation of the proxy. How this works is beyond the scope of this article, but you can learn more about it here. The NFT platform is investigating whether the victims had interacted with a list of common websites, he added. */, /* Cancelled / finalized orders, by hash. i cannot able to list any NFTs using trezor now.. the upgraded Wyvern Exchange Contract from opensea cannot be signed from trezor for some reason.. anyone faced this issue and know how to resolve it? To change the commission price go to "my collections," then click on one of your collections then click on edit. */, /* If paying using a token (not Ether), transfer tokens. Keep reading and I'll share the 3 largest scams to watch out for. * @dev Call validateOrder - Solidity ABI encoding limitation workaround, hopefully temporary. I read a few articles on how not to get scammed on OpenSea. A mistake in the code where a thief almost ran off with 64 million dollars. % ) Gas: 24 Gwei and bidding on any cryptogood it in the Protocol! 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