Don't see your question here?
This page contains general checkout questions. Each page in the docs contains context-specific FAQs. For questions related to our Embedded Wallets, see the Embedded Wallets FAQ.
If your question still isn't answered, please reach out to us on Discord.
There is no cost to sellers! Buyers pay a 1% service fee on top of payment processing fees. See Pricing for more details.
A full-featured checkout link takes minutes to set up:
When you're ready to customize further, you can tinker with styling, SDKs, webhooks, dynamic pricing, and more.
Our product is enterprise-ready with a 99.9% uptime. We are battle-tested with enterprises like Balmain, New York Fashion Week, Unilever, deadmau5 and Tilting Point. We can enqueue transactions up to 200 transactions/minute by default, with higher limits upon request.
Checkout links can be used anywhere webpages are supported.
The Checkout Elements SDK is supported on Web and Mobile Web.
|Blockchain (Mainnet)||Supported Currencies|
|Arbitrum One||ETH, USDC.e|
|Polygon||MATIC, USDC, USDC.e, WETH|
|Blockchain (Testnet)||Supported Currencies|
Yes! See Marketplace Sales for more details.
We also support thirdweb Marketplace (EVM) and Auction House (Solana) contracts.
Yes! You'll need to "wrap" your NFT with a marketplace contract like thirdweb marketplace or build your own. This "direct listing" approach works like this:
- The seller has an NFT already minted and wants to sell it.
- The seller approves the marketplace contract to take this NFT from their wallet once a buyer offers a specified amount. The NFT is not moved until a sale is completed.
- A buyer agrees to pay the specified amount. They pay via your Paper checkout flow.
- After the buyer's payment is successful, Paper calls the "buy" method with the expected amount in crypto to the marketplace contract. This method transfers the NFT to the buyer's wallet.
Paper directly calls the smart contract and pays for the mint using the native currency specified in the contract function. If you are looking for FIAT payout, it is available for the enterprise customers. Please contact sales .
Paper uses multiple payment processors and supports credit card payments in most countries (190+) and all 50 US states. Select countries that the US cannot conduct business with are not supported (Cuba, Iran, North Korea, Syria, and the Crimea, Donetsk, and Luhansk Regions). 10+ currencies and languages are supported.
Paper accepts: credit/debit cards (Visa, Mastercard, American Express, Discover, UnionPay, JCB, Diners Club), Apple Pay, Google Pay, iDEAL
Paper limits checkouts to be priced at $2,000 USD and reserves the right to change this limit based on your checkout's risk profile. For enterprise customers, we can support up to $15,000.
If you need a higher price limit, please fill out this form..
Yes, we support the ability for merchants to cover the gas fees related to transactions. See details here.
Paper covers fees related to operations on Paper-managed contracts.
Paper combines buyer, merchant, payment method, device, and behavioral signals from multiple vendors to compute the riskiness of a purchase. A small portion of buyers (< 3% and varies by merchant) will be prompted to submit a photo ID and take a webcam selfie. This step is automated and takes under 1 minute.
Reminder: Paper takes on all chargeback liability from the developer!
Yes, please use the following card numbers. The expiry date, CVV, and postal code do not matter.
|4242424242424242||A "low risk" card.|
|4000000000009235||A "high risk" card that prompts KYC.|
Here are faucets to receive testnet funds:
NFTs are a great way to gate content! Once the NFT is purchased, you can provide a link to redeem their utility on the post-purchase page and email.
Listen to webhooks to update your database or send a custom email when the NFT has been transferred.
See Advanced Customizations for more customization of the email after a buyer completes their purchase.
Yes, the checkout is localized to the buyer's browser language, or you can force a specific language. See Translations for more details.
You can use our dynamic one-time checkout links to generate payment links with discounts or referral codes for customers. For a full guide to how to implement this, refer here.
Yep, you can use our dynamic one-time checkout links to generate gated payment links for users who’ve verified their identity on your website. For a full guide to how to implement this, refer here.
Buyers who don't have a wallet can create one with their email or social login. This uses our non-custodial Embedded Wallet product.
Buyers can visit My Wallets to view and transfer NFTs in their Embedded Wallets. We cover all gas fees related to transferring and offer a way for users to export their private key.
This page does not support transfers for self-custody wallets like MetaMask.
*For more questions related to our Embedded Wallets, see our Embedded Wallets FAQ.
Does Paper support credit card checkout for functions outside of minting like burning and editing NFTs?
This feature is available upon request. Please contact us at [email protected].
For developers, we have a Discord forum for questions that is checked on a daily basis. If you are looking for guaranteed support time and SLA, please contact [email protected].
For customers, we respond to inquiries on our support center and to [email protected] within 24 business hours.
Paper is a registered Money Services Business with FINCen with the registration no. of 31000235368189. We are will in the process of our SOC II certification.
We conduct KYC (know your customer) verification with driver’s license and liveliness check on suspicious customers (<3% on average and varies by merchant). We also handle dark wallet checks to ensure that flagged wallets and stolen funds are not being used in any of our transactions.
We take on all liabilities & chargeback risks as the Merchant of Record.
We have industry leading authorization rates at 92%. We are able to maintain a high authorization by only operating with NFTs, and having a proprietary fraud engine that keeps our fraud rate at <0.5%.