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Payment Processor Contracts

Limit Break is introducing the world's first ERC721-C compatible payment processing layer for NFT marketplace integrations. Combined with the whitelisted transfer and wrapper mechanics introduced in Creator Token Contracts, the Payment Processor contract can be used to securely process NFT sales with secondary market royalty enforcement built-in. The Payment Processor, as implemented, enables truly enforceable programmable royalty systems to be built by NFT creators.

Overview

The following contracts are available for use/integration by NFT developers and NFT marketplaces:

  • Payment Processor: The world's first ERC721-C compatible marketplace contract! This contract is available for community use.

Features

  • Creator Defined Security Profiles
    • Exchange Whitelist On/Off
    • Payment Method Whitelist On/Off
    • Pricing Constraints On/Off
    • Private Sales On/Off
    • Delegate Purchase Wallets On/Off
    • Smart Contract Buyers/Sellers On/Off
    • Exchange Whitelist Bypass for EOAs On/Off
  • Enforceable/Programmable Fees
    • Built-in EIP-2981 Royalty Enforcement
    • Built-in Marketplace Fee Enforcement
  • Multi-Standard Support
    • ERC721-C
    • ERC1155-C
    • ERC721 + EIP-2981
    • ERC1155 + EIP-2981
  • Payments
    • Native Currency (ETH or Equivalent)
    • ERC-20 Coin Payments
  • A Multitude of Supported Sale Types
    • Buy Single Listing
      • Collection-Level Offers
      • Item-Specific Offers
    • Buy Batch of Listings (Shopping Cart)
    • Buy Bundled Listing (From One Collection)
    • Sweep Listings (From One Collection)
    • Partial Order Fills (When ERC-20 Payment Method Is Used)

Contract Addresses

Payment Processor is deployed on the following production EVM Networks:

Network Address
Mainnet 0x009a1dC629242961C9E4f089b437aFD394474cc0
Polygon 0x009a1Daf6B5b8ADC6B3DB720C58D43caA2fdAc56

Payment Processor is deployed on the following test EVM Networks:

Network Address
Goerli 0x009a1D88379A604664006FFf6c32877bFF6723Bd
Sepolia 0x009a1D8DE8D80Fcd9C6aaAFE97A237dC663f2978
Mumbai 0x009A1D6bDf55B25ca21436ED30968C1fb7648244

Code Documentation

To generate the latest code-level documentation from the natspec comments, download the source code and run the following commands.

> forge doc -s

Marketplace Integration Guide

The Payment Processor smart contract in this repository will be deployed to Ethereum Mainnet, as well as select EVM-compatible L2s.

For NFT Developers

All ERC-721 and ERC-1155 tokens are compatible with the Payment Processor contract. There is nothing preventing marketplaces from executing sales of any NFT using the Payment Processor. However, in order to guarantee that the payment and control flow goes through the Payment Processor, a transfer whitelist is needed that exclusively lists the Payment Processor as the only allowed operator. Doing so allows for secondary marketplace royalties that are truly enforceable.

See Limit Break's Creator Token Contracts code repository and NPM package to get started with ERC721-C, ERC1155-C tokens.

Security Profiles

The Payment Processor gives NFT creators control over how their collections can be bought and sold. By default, all NFT collections fallback to the default security profile. The default profile is very open and permissive, allowing private sale, delegated purchases, buys and sell amongst EOAs and multi-sigs, and is open to any marketplace to integrate. In case of abuse, NFT collection creators may create or use a custom security profile that is fully under their control. Thus, this contract can be considered to be a Creator Defined Marketplace.

Functions that NFT developers can use to create and manage their own security profiles are:

  • function createSecurityPolicy(bool enforceExchangeWhitelist, bool enforcePaymentMethodWhitelist, bool enforcePricingConstraints, bool disablePrivateListings, bool disableDelegatedPurchases, bool disableEIP1271Signatures, bool disableExchangeWhitelistEOABypass, uint32 pushPaymentGasLimit,string calldata registryName)
  • function updatedSecurityPolicy(bool enforceExchangeWhitelist, bool enforcePaymentMethodWhitelist, bool enforcePricingConstraints, bool disablePrivateListings, bool disableDelegatedPurchases, bool disableEIP1271Signatures, bool disableExchangeWhitelistEOABypass, uint32 pushPaymentGasLimit,string calldata registryName)
  • function transferSecurityPolicyOwnership(uint256 securityPolicyId, address newOwner)
  • function renounceSecurityPolicyOwnership(uint256 securityPolicyId)
  • function setCollectionSecurityPolicy(address tokenAddress, uint256 securityPolicyId)
  • function setCollectionPaymentCoin(address tokenAddress, address coin)
  • function setCollectionPricingBounds(address tokenAddress, PricingBounds calldata pricingBounds)
  • function setTokenPricingBounds(address tokenAddress, uint256[] calldata tokenIds, PricingBounds[] calldata pricingBounds)
  • function whitelistExchange(uint256 securityPolicyId, address account)
  • function unwhitelistExchange(uint256 securityPolicyId, address account)
  • function whitelistPaymentMethod(uint256 securityPolicyId, address coin)
  • function unwhitelistPaymentMethod(uint256 securityPolicyId, address coin)
  • function getSecurityPolicy(uint256 securityPolicyId)
  • function isWhitelisted(uint256 securityPolicyId, address account)
  • function isPaymentMethodApproved(uint256 securityPolicyId, address coin)
  • function getTokenSecurityPolicyId(address collectionAddress)
  • function isCollectionPricingImmutable(address tokenAddress)
  • function isTokenPricingImmutable(address tokenAddress, uint256 tokenId)
  • function getFloorPrice(address tokenAddress, uint256 tokenId)
  • function getCeilingPrice(address tokenAddress, uint256 tokenId)

Payment Methods

By default, the approved payment methods are ETH/WETH (or the equivalents for the current chain), USDC, USDT, and DAI. To choose custom payment methods that are approved for their collections, creators may make use of the custom security profile feature to establish their own list of approved payments.

For NFT Marketplaces

Supported Purchase Flows/Scenarios

  1. Seller Lists A Single Item and Buyer Is Matched Using a "Buy Now" or "Auction" style feature. Buyer or their delegated purchaser account accepts and pays gas to execute the transaction. (ETH or ERC-20 Payments Acccepted)
  2. Seller Lists A Single Item for a designated Buyer (Private Sale). Buyer or their delegated purchaser account accepts and pays gas to execute the transaction. (ETH or ERC-20 Payments Acccepted)
  3. Buyer makes a "Collection-Level" offer for a desired collection. A Seller accepts the offer at the offer price and pays gas to execute the transaction. (ONLY ERC-20 Payments Accepted).
  4. Buyer makes an "Item-Specific" offer for a desired token id in a collection. The owner of the item can accept the offer at the offer price and pays gas to execute the transaction. (ONLY ERC-20 Payments Accepted).
  5. Multiple distinct Sellers List items and a Buyer adds the desired items to their "cart". Buyer or their delegated purchaser account accepts and pays gas to executed the transaction. Purchased batch of items can be from one or more collections, and any combination of ETH and ERC-20 Payments are accepted. (Private and Public sales are supported in batches)
  6. Multiple distinct Buyers make collection-level or item-specific offers. A Seller that has many NFTs with offers can choose a subset of these offers to accept and execute the sale in a batch. In this case, the Seller accepts the desired offers and pays gas to execute the transaction. Sold items can be from one or more collections, and any combination of ERC-20 Payments are accepted. (ONLY ERC-20 Payments Accepted).
  7. A seller with many NFTs in a single collection lists a subset of their NFTs in a single bundled listing, pricing each item individually. A Buyer is Matched Using a "Buy Bundle Now" feature (exact bundle price only). Buyer or their delegated purchaser account accepts and pays gas to execute the transaction. (ETH or ERC-20 Payments Accepted, but note that all items in the bundle must be priced in the same currency).
  8. A buyer "sweeps" a single collection to obtain many NFTs. They may purchase any number of NFTs on a single collection by accepting the listing price on many distinct sellers' items. The Buyer or their delegated purchaser account pays gas to execute the transaction. (ETH or ERC-20 Payments Accepted, but note that all swept items must be priced in the same currency).

Required Approvals

On ERC-721 and ERC-1155 contracts, prompt the user to setApprovalForAll(paymentProcessor.address, true). This needs to be done once per token contract the seller wishes to sell.

For buyers purchasing with ERC-20 coins, the buyer must approve the payment processor to transfer the funds using function approve(address _spender, uint256 _value) public returns (bool success) on the coin contract.

Signing Single Listings

The seller must be prompted to sign an EIP-712 sale approval in the following format.

Note: one of the fields that will be signed is the maximum royalty fee that will be deducted from the proceeds. Upon each signature request, this max royalty fee amount should be queried from the NFT contract using the EIP-2981 royaltyInfo function. If the on-chain royalty increases after the listing has been signed, sales will not execute. However, if the on-chain royalty is reduced, the reduced royalty fee is paid during the sale.

EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)

SaleApproval(uint8 protocol,bool sellerAcceptedOffer,address marketplace,uint256 marketplaceFeeNumerator,uint256 maxRoyaltyFeeNumerator,address privateBuyer,address seller,address tokenAddress,uint256 tokenId,uint256 amount,uint256 minPrice,uint256 expiration,uint256 nonce,uint256 masterNonce,address coin)

Signing Single Offers

For item-specific offers or purchases where a specific token id was listed, the buyer must be prompted to sign an EIP-712 offer approval in the following format.

EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)

OfferApproval(uint8 protocol,address marketplace,uint256 marketplaceFeeNumerator,address delegatedPurchaser,address buyer,address tokenAddress,uint256 tokenId,uint256 amount,uint256 price,uint256 expiration,uint256 nonce,uint256 masterNonce,address coin)

For collection-level offers where not specific token id is requested, the buyer must be prompted to sign an EIP-712 offer approval in the following format.

EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)

CollectionOfferApproval(uint8 protocol,bool collectionLevelOffer,address marketplace,uint256 marketplaceFeeNumerator,address delegatedPurchaser,address buyer,address tokenAddress,uint256 amount,uint256 price,uint256 expiration,uint256 nonce,uint256 masterNonce,address coin)

Signing Bundled Listings

Sellers can also list a bundle of NFTs from the same collection with a single signature. The signature format for a bundled listing is:

EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)

BundledSaleApproval(uint8 protocol,address marketplace,uint256 marketplaceFeeNumerator,address privateBuyer,address seller,address tokenAddress,uint256 expiration,uint256 nonce,uint256 masterNonce,address coin,uint256[] tokenIds,uint256[] amounts,uint256[] maxRoyaltyFeeNumerators,uint256[] itemPrices)

Signing Bundled Offers (Offers on Listed Bundle or Collection Sweeps)

For offers on bundled listings or collection sweeps, buyers can sign a bulk offer approval. The signature format for bundled offers is:

EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)

BundledOfferApproval(uint8 protocol,address marketplace,uint256 marketplaceFeeNumerator,address delegatedPurchaser,address buyer,address tokenAddress,uint256 price,uint256 expiration,uint256 nonce,uint256 masterNonce,address coin,uint256[] tokenIds,uint256[] amounts,uint256[] itemSalePrices)

Canceling Listings or Offers

To cancel a listing, prompt the seller to revokeSingleNonce(marketplace.address, listingNonce). Provide the nonce of the listing the user has selected for cancellation.

To cancel an offer, prompt the buyer to revokeSingleNonce(marketplace.address, offerNonce). Provide the nonce of the offer the user has selected for cancellation.

Users may cancel all existing listings and offers by calling revokeMasterNonce().

Executing Sale Functions

The purchase flows described above can be achieved by executing one of the following buy functions.

  • buySingleListing(MatchedOrder memory saleDetails, SignatureECDSA memory signedListing, SignatureECDSA memory signedOffer)
  • buyBatchOfListings(MatchedOrder[] calldata saleDetailsArray, SignatureECDSA[] calldata signedListings, SignatureECDSA[] calldata signedOffers)
  • buyBundledListing(SignatureECDSA memory signedListing, SignatureECDSA memory signedOffer, MatchedOrderBundleExtended memory bundleDetails,BundledItem[] calldata bundleItems)
  • sweepCollection(SignatureECDSA memory signedOffer,MatchedOrderBundleBase memory bundleDetails, BundledItem[] calldata bundleItems, SignatureECDSA[] calldata signedListings)

Payment Process vs Seaport Gas Comparison

A "Cold" purchase is one where the seller and buyer have never interacted with either the marketplace or NFT contract before. These tend to be the most expensive, one-time transactions because they often involve setting storage slot values from zero to non-zero values at a cost of 20K gas units each. A "Warm" purchase is one where the seller and buyer have both interacted with the marketplace contract before and where the buyer's NFT balance is already greater than zero. The "Warm" transaction cost is more representative of the majority of transactions as buyers and sellers are far more likely to buy and sell more than one NFT over the lifetime of the wallet.

Also note that transaction costs will vary a lot depending on a large number of variables that impact control flow of the smart contract (ETH vs ERC20 payment, ERC721 vs ERC1155, warm vs cold sells/buys, custom conduits/zones/advanced order criteria in Seaport, etc). For purposes of benchmarking identical scenarios we have focused on the following scenarios:

Sale Types:

  • Buy Single Listing
  • Buy Bundled Listing (1 buyer, 1 seller, multiple items from a single collection)
  • Collection Sweep (1 buyer, multiple sellers, multiple items from a single collection)

Conditions:

  • Native ETH Payment
  • ERC721 Token Sales
  • No Fees
  • Marketplace-Only Fees,
  • Marketplace and Royalty Fees
  • Warm vs Cold Purchases

Benchmark - Buy Single Listing (Seaport vs Payment Processor)

Number of Runs: 100

Items Benchmark Seaport 1.5 Gas (Warm) Payment Processor Gas (Warm) +/- Gas Usage Seaport 1.5 Gas (Cold) Payment Processor Gas (Cold) +/- Gas Usage
1 No Fees 42,087 37,123 -4,964 66,362 101,906 +35,544
1 Marketplace Fees 49,007 42,794 -6,213 75,262 111,406 +36,144
1 Marketplace and Royalty Fees 55,929 48,697 -7,232 84,164 121,234 +37,070

Benchmark - Buy Single Listing (Blur vs Payment Processor)

Number of Runs: 100

Items Benchmark Blur (Warm) Payment Processor Gas (Warm) +/- Gas Usage Blur Gas (Cold) Payment Processor Gas (Cold) +/- Gas Usage
1 No Fees 184,886 37,123 -147,763 198,432 101,906 -96,526
1 Marketplace Fees 195,228 42,794 -152,434 208,758 111,406 -97,352
1 Marketplace and Royalty Fees 205,557 48,697 -156,860 219,100 121,234 -97,866

Benchmark - Buy Bundled Listing (Seaport vs Payment Processor)

Number of Runs: 100

Items Benchmark Seaport 1.5 Gas (Warm) Payment Processor Gas (Warm) +/- Gas Usage Seaport 1.5 Gas (Cold) Payment Processor Gas (Cold) +/- Gas Usage
2 No Fees 62,125 55,355 -6,770 86,400 124,638 +38,238
2 Marketplace Fees 77,577 61,061 -16,516 107,049 134,203 +27,154
2 Marketplace and Royalty Fees 93,316 66,372 -26,944 128,799 144,304 +15,505
3 No Fees 77,413 66,798 -10,615 104,377 138,886 +34,509
3 Marketplace Fees 102,934 72,540 -30,394 135,753 148,516 +12,763
3 Marketplace and Royalty Fees 131,652 78,847 -52,805 167,135 158,870 -8,265
5 No Fees 112,191 92,041 -20,150 142,535 167,460 -24,925
5 Marketplace Fees 160,357 99,287 -61,070 193,176 177,220 -15,956
5 Marketplace and Royalty Fees 208,537 107,652 -100,885 243,831 188,040 -55,791
30 No Fees 589,814 456,110 -133,704 620,158 531,527 -88,631
30 Marketplace Fees 879,669 464,479 -415,190 912,488 542,412 -370,076
30 Marketplace and Royalty Fees 1,170,030 479,167 -690,863 1,205,324 559,577 -645,747
100 No Fees 1,933,443 1,540,973 -392,470 1,963,787 1,616,390 -347,397
100 Marketplace Fees 2,908,756 1,552,491 -1,356,265 2,941,575 1,630,405 -1,311,170
100 Marketplace and Royalty Fees 3,889,693 1,584,891 -2,304,802 3,924,987 1,665,300 -2,259,687

Benchmark - Buy Bundled Listing (Blur vs Payment Processor)

Number of Runs: 100

Items Benchmark Blur (Warm) Payment Processor Gas (Warm) +/- Gas Usage Blur Gas (Cold) Payment Processor Gas (Cold) +/- Gas Usage
2 No Fees 321,257 55,355 -265,902 334,647 124,638 -210,009
2 Marketplace Fees 340,570 61,061 -279,509 357,321 134,203 -223,118
2 Marketplace and Royalty Fees 363,933 66,372 -297,561 380,692 144,304 -236,388
3 No Fees 438,912 66,798 -372,114 455,645 138,886 -316,759
3 Marketplace Fees 472,737 72,540 -400,197 489,503 148,516 -341,987
3 Marketplace and Royalty Fees 506,551 78,847 -427,704 523,318 158,870 -364,448
5 No Fees 682,440 92,041 -590,399 699,115 167,460 -531,655
5 Marketplace Fees 737,182 99,287 -637,895 753,925 177,220 -576,705
5 Marketplace and Royalty Fees 791,848 107,652 -684,196 808,576 188,040 -620,536
30 No Fees 3,730,935 456,110 -3,274,825 3,746,397 531,527 -3,214,870
30 Marketplace Fees 4,047,087 464,479 -3,582,608 4,062,670 542,412 -3,520,258
30 Marketplace and Royalty Fees 4,362,865 479,167 -3,883,698 4,378,440 559,577 -3,818,863

Benchmark - Collection Sweeps (Seaport vs Payment Processor)

Number of Runs: 50

Items Benchmark Seaport 1.5 Gas (Warm) Payment Processor Gas (Warm) +/- Gas Usage Seaport 1.5 Gas (Cold) Payment Processor Gas (Cold) +/- Gas Usage
2 No Fees 102,160 70,045 -32,115 165,639 189,853 +24,214
2 Marketplace Fees 122,080 75,753 -46,327 191,770 199,418 +7,648
2 Marketplace and Royalty Fees 142,027 81,859 -60,168 219,111 209,539 -9,572
3 No Fees 149,670 96,150 -53,520 234,533 249,039 +14,506
3 Marketplace Fees 179,555 101,895 -77,660 270,447 258,669 -11,778
3 Marketplace and Royalty Fees 209,517 108,203 -101,314 310,274 269,043 -41,231
5 No Fees 244,782 148,539 -96,243 372,413 373,691 +1,278
5 Marketplace Fees 294,679 154,336 -140,343 428,016 381,467 -46,549
5 Marketplace and Royalty Fees 344,770 161,027 -183,743 492,942 390,171 -102,771
30 No Fees 1,450,706 828,888 -621,818 2,106,248 1,971,040 -135,208
30 Marketplace Fees 1,759,745 835,596 -924,149 2,421,647 1,979,668 -441,979
30 Marketplace and Royalty Fees 2,075,592 849,970 -1,225,622 2,814,840 1,993,416 -821,424
100 No Fees 4,925,523 2,860,887 -2,064,636 7,062,825 6,576,872 -485,953
100 Marketplace Fees 6,048,476 2,870,117 -3,178,359 8,240,526 6,587,988 -1,652,538
100 Marketplace and Royalty Fees 7,222,296 2,904,517 -4,317,779 9,695,946 6,615,968 -3,079,978

Benchmark - Collection Sweeps (Blur vs Payment Processor)

Number of Runs: 100

Items Benchmark Blur (Warm) Payment Processor Gas (Warm) +/- Gas Usage Blur Gas (Cold) Payment Processor Gas (Cold) +/- Gas Usage
2 No Fees 331,899 70,045 -261,854 345,306 189,853 -155,453
2 Marketplace Fees 350,652 75,753 -274,899 365,826 199,418 -166,408
2 Marketplace and Royalty Fees 372,432 81,859 -290,573 389,180 209,539 -179,641
3 No Fees 455,922 96,150 -359,772 472,664 249,039 -223,625
3 Marketplace Fees 489,745 101,895 -387,850 506,462 258,669 -247,793
3 Marketplace and Royalty Fees 523,548 108,203 -415,345 540,306 269,043 -271,263
5 No Fees 716,446 148,539 -567,907 733,148 373,691 -359,457
5 Marketplace Fees 771,185 154,336 -616,849 787,923 381,467 -406,456
5 Marketplace and Royalty Fees 825,848 161,027 -664,821 842,554 390,171 -452,383
30 No Fees 3,977,446 828,888 -3,148,558 3,993,059 1,971,040 -2,022,019
30 Marketplace Fees 4,293,595 835,596 -3,457,999 4,308,999 1,979,668 -2,329,331
30 Marketplace and Royalty Fees 4,609,378 849,970 -3,759,408 4,624,913 1,993,416 -2,631,497

The Seaport Benchmark Test Code can be found here!

The Blur Benchmark Test Code can be found here!

The Payment Processor Benchmark Test Code can be found here!

Benchmarks Using Opensea's Benchmarking Framework

OpenSea maintains a great benchmarking repository. We've added payment processor to the benchmarked marketplaces. Here are the results comparing payment processor to an expanded set of marketplaces.

Seaport

Benchmark Payment Processor Seaport 1.4 Seaport 1.1 Difference 1.4 Difference 1.1
(ERC1155 -> ERC20) Fulfill w/ Sig 106,144 110,146 111,251 -4,002 -5,107
(ERC1155 -> ETH) Fulfill, w/ Sig 98,318 101,274 102,621 -2,956 -4,303
(ERC20 -> ERC1155) Fulfill w/ Sig 106,148 110,190 111,304 -4,042 -5,156
(ERC20 -> ERC721) Fulfill w/ Sig 106,714 109,590 110,692 -2,876 -3,978
(ERC721 -> ERC20) Fulfill, w/ Sig 106,702 109,463 110,556 -2,761 -3,854
(ERC721 -> ETH One-Fee-Recipient) Fulfill w/ Sig 127,395 132,821 134,313 -5,426 -6,918
(ERC721 -> ETH Two-Fee-Recipient) Fullfil /w Sig 159,580 166,965 168,573 -7,385 -8,993
(ERC721 -> ETH) Fulfill, w/ Sig 108,872 109,202 110,528 -330 -1,656
(ERC721 -> WETH) Fulfill, w/ Sig 106,870 109,587 110,692 -2,717 -3,822
(ERC721x10 -> ERC20 Distinct Orders) Fulfill /w Sigs 348,351 723,313 779,727 -374,962 -431,376
(ERC721x10 -> ETH (Priced Indvidually)) Fulfill /w Sig 224,824 279,159 -54,335
(ERC721x10 -> ETH Distinct Orders) Fulfill /w Sigs 336,357 712,480 768,951 -376,123 -432,594
(ERC721x10 -> ETH One-Fee-Recipient (Priced Indvidually)) Fulfill /w Sig 298,841 413,087 -114,246
(ERC721x10 -> ETH Two-Fee-Recipients (Priced Indvidually)) Fulfill /w Sig 331,796 547,047 -215,251
(ERC721x10 -> ETH) Fulfill /w Sig 260,684 198,969 205,305 61,715 55,379
(ERC721x10 -> WETH Distinct Orders) Fulfill /w Sigs 348,503 723,437 779,839 -374,934 -431,336
(WETH -> ERC721) Fulfill w/ Sig 106,850 109,726 110,840 -2,876 -3,990

Blur

Benchmark Payment Processor Blur Difference
(ERC721 -> ETH) Fulfill, w/ Sig 108,872 260,877 -152,005
(ERC721 -> WETH) Fulfill, w/ Sig 106,870 213,393 -106,523
(ERC721x10 -> ETH Distinct Orders) Fulfill /w Sigs 336,357 1,439,062 -1,102,705
(ERC721x10 -> WETH Distinct Orders) Fulfill /w Sigs 348,503 1,407,663 -1,059,160
(WETH -> ERC721) Fulfill w/ Sig 106,850 211,410 -104,560

X2Y2

Benchmark Payment Processor X2Y2 Difference
(ERC20 -> ERC721) Fulfill w/ Sig 106,714 165,477 -58,763
(ERC721 -> ERC20) Fulfill, w/ Sig 106,702 167,436 -60,734
(ERC721 -> ETH One-Fee-Recipient) Fulfill w/ Sig 127,395 163,831 -36,436
(ERC721 -> ETH Two-Fee-Recipient) Fullfil /w Sig 159,580 198,090 -38,510
(ERC721 -> ETH) Fulfill, w/ Sig 108,872 148,836 -39,964
(ERC721 -> WETH) Fulfill, w/ Sig 106,870 167,947 -61,077
(ERC721x10 -> ERC20 Distinct Orders) Fulfill /w Sigs 348,351 1,027,315 -678,964
(ERC721x10 -> ETH Distinct Orders) Fulfill /w Sigs 336,357 786,597 -450,240
(ERC721x10 -> ETH) Fulfill /w Sig 260,684 208,916 51,768
(ERC721x10 -> WETH Distinct Orders) Fulfill /w Sigs 348,503 1,032,301 -683,798
(WETH -> ERC721) Fulfill w/ Sig 106,850 165,988 -59,138

Looks Rare

Benchmark Payment Processor LooksRare Difference
(WETH -> ERC721) Fulfill w/ Sig 106,850 126,264 -19,414
(ERC721 -> WETH) Fulfill, w/ Sig 106,870 126,245 -19,375
(ERC721 -> ETH) Fulfill, w/ Sig 108,872 189,636 -80,764
(ERC721 -> ERC20) Fulfill, w/ Sig 106,702 126,097 -19,395
(ERC20 -> ERC721) Fulfill w/ Sig 106,714 126,116 -19,402
(ERC20 -> ERC1155) Fulfill w/ Sig 106,148 127,536 -21,388
(ERC1155 -> ETH) Fulfill, w/ Sig 98,318 153,773 -55,455
(ERC1155 -> ERC20) Fulfill w/ Sig 106,144 127,481 -21,337

Sudoswap v1

Benchmark Payment Processor Gas Sudoswap Gas Difference
(ERC721 -> ETH) Fulfill, w/ Sig 108,872 184,272 -75,400
(ERC721 -> ERC20) Fulfill, w/ Sig 106,702 212,386 -105,684
(ERC20 -> ERC721) Fulfill w/ Sig 106,714 126,664 -19,950
(ERC721x10 -> ETH) Fulfill w/ Sig 260,684 734,852 -474,168
(ERC721x10 -> ETH Distinct Orders) Fulfill w/ Sigs 336,357 1,396,111 -1,059,754

ZeroEx

Benchmark Payment Processor ZeroEx Difference
(ERC1155 -> ERC20) Fulfill w/ Sig 106,144 110,361 -4,217
(ERC1155 -> ETH) Fulfill, w/ Sig 98,318 106,783 -8,465
(ERC20 -> ERC1155) Fulfill w/ Sig 106,148 112,969 -6,821
(ERC20 -> ERC721) Fulfill w/ Sig 106,714 109,374 -2,660
(ERC721 -> ERC20) Fulfill, w/ Sig 106,702 106,901 -199
(ERC721 -> ETH One-Fee-Recipient) Fulfill w/ Sig 127,395 132,032 -4,637
(ERC721 -> ETH Two-Fee-Recipient) Fullfil /w Sig 159,580 167,297 -7,717
(ERC721 -> ETH) Fulfill, w/ Sig 108,872 83,423 25,449
(ERC721 -> WETH) Fulfill, w/ Sig 106,870 107,082 -212
(ERC721x10 -> ERC20 Distinct Orders) Fulfill /w Sigs 348,351 420,330 -71,979
(ERC721x10 -> ETH Distinct Orders) Fulfill /w Sigs 336,357 463,314 -126,957
(ERC721x10 -> WETH Distinct Orders) Fulfill /w Sigs 348,503 422,092 -73,589
(WETH -> ERC721) Fulfill w/ Sig 106,850 107,522 -672

Audits

Payment Processor was audited by Zokyo, Omniscia, and Zellic. Read the audit reports here.

License and Disclaimer

Payment Processor is made available by Limit Break International ("Limit Break") in an effort to advance the NFT and Ethereum ecosystem (the "Payment Processor Contracts"). Limit Break is committed to following, and has sought to apply, commercially reasonable best practices as it pertains to safety and security in making Payment Processor publicly available. Nevertheless, smart contracts are a new and emerging technology and carry a high level of technical risk and uncertainty. Please report any actual or suspected security vulnerabilities to our team at [email protected].

Payment Processor made available under the MIT License, which disclaims all warranties in relation to the project and which limits the liability of those that contribute and maintain the project, including Limit Break As set out further in Limit Break's Terms of Service, as may be amended and revised from time to time, you acknowledge that you are solely responsible for any use of Payment Processor Contracts and you assume all risks associated with any such use. For the avoidance of doubt, such assumption of risk by the user also implies all risks associated with the legality or related implications tied to the use of smart contracts in any given jurisdiction, whether now known or yet to be determined.

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