What Is CryptoSlam? NFT Sales Rankings, Wash-Trade Filtering and Ownership

Who runs CryptoSlam

CryptoSlam began as a collector's side project. Randy Wasinger started building the site in 2018 to track MLB Champions, an early NFT game and the first set of NFTs officially licensed by a major professional sports league. The first version launched in early 2019 (CryptoSlam press release via Newswire, April 2021).

Its funding and corporate milestones:

The site is operated by CryptoSlam, Inc. Its Terms of Use (effective October 3, 2022) give the contact address as 12433 Antioch Rd, Unit #26733, Overland Park, KS 66225, with the email [email protected], and are governed by the laws of the State of Delaware. As of October 2026 the site footer reads "© 2026 CryptoSlam" and does not name a parent company, so the current group structure after the 2023 Forkast Labs merger could not be confirmed from official pages.

What CryptoSlam tracks

CryptoSlam aggregates NFT sales and turns them into ranked tables. As of October 2026 its site menu offers four views:

• NFT rankings and top sales: a market dashboard with total sales volume, buyers, sellers and transactions for 24 hours, 7 days, 30 days or all time, plus the largest single sales per chain.
• Collection rankings by sales volume, with transaction, buyer and seller counts and an option to hide fungible NFTs such as BRC-20 tokens.
• Blockchain rankings, which compare NFT sales across chains and show sales, wash volume, wash share and wash transactions side by side.
• Fan tokens, a separate section for sports and entertainment fan tokens.

Chain coverage has expanded over time. In 2021 it covered Ethereum, WAX and Flow. As of October 2026 the blockchain rankings page lists 23 chains: Ethereum, Bitcoin, Polygon, Base, Immutable, BNB Chain, Solana, Panini, Mythos, Flow, Avalanche, Arbitrum, Cardano, WAX, Tezos, SEI, Blast, Near, Ronin, Algorand, Palm, Zora and Stargaze. Bitcoin data includes Ordinals and BRC-20 collections. Wash-trade tracking has not yet been added for every chain; the site marks chains without it with a dash.

How CryptoSlam filters wash trades

Wash trading means trading an asset with yourself, or with a coordinated partner, to inflate volume. CryptoSlam excludes such trades from its headline figures. This is the main reason its totals differ from those of other dashboards. Background on the practice is in OBOL's guide to crypto wash trading.

According to reporting on its methodology (Decrypt, February 2023), CryptoSlam's earlier filters flagged:

• trades where the buyer and seller are the same wallet;
• NFTs moving repeatedly between the same wallets;
• the same token bought three or more times;
• wallets funded from a common source.

It later added a category for liquidity-providing wallets that trade with little regard to an NFT's traits.

Two large adjustments show the effect:

• LooksRare, early 2022: CryptoSlam removed more than $8 billion of LooksRare volume after that marketplace's token-reward program encouraged circular trading.
• Blur, February 2023: It excluded about $824 million of Blur trades by February 27, 2023, more than 80% of Blur's volume since its airdrop.

Wasinger has said "inorganic trading" may describe such activity more accurately. The site still labels it wash trading.

How to read CryptoSlam numbers

CryptoSlam figures are useful for direction and comparison, but they are estimates. Keep these points in mind:

• Adjusted vs. raw volume. A collection's CryptoSlam volume can be much lower than its marketplace's own figure. Neither is "wrong"; they measure different things.
• USD conversion. Sales in ETH, SOL or other tokens are converted to dollars, so the dollar total partly reflects token price moves rather than NFT demand.
• Thin markets. One large sale or a few active wallets can push a small collection up the rankings. Check transaction and buyer counts, not just volume.
• Rank ≠ legitimacy. A high ranking does not mean a collection is authentic or safe to buy. Verify the contract address on the marketplace before trading.

For general techniques on reading on-chain metrics, see OBOL's on-chain metrics guide.

API and pricing

CryptoSlam offers an API for collection rankings, sales data and chain-level analytics through a developer portal at cryptoslam.apiable.io, linked from the site footer; documentation and FAQs sit at cryptoslam.gitbook.io/docs. A developer directory listing (Quicknode, as of October 2026) describes a free tier with community support and custom-priced enterprise plans with dedicated support and SLAs. Rate limits and prices should be checked on the portal before building on the API.

Privacy

CryptoSlam's privacy policy (effective March 27, 2024) says data is stored on servers in the United States and that it may collect account details, email and payment information for purchases, X (Twitter) handles, wallet addresses linked to NFT claims, IP and device data, cookies and location data. Browsing public rankings does not require connecting a wallet. Be cautious with any page that asks you to sign a wallet transaction in CryptoSlam's name.

OBOL's separate CryptoSlam review holds its editorial assessment.

Official channels

• Website: cryptoslam.io
• X (Twitter): twitter.com/cryptoslamio
• YouTube: youtube.com/@cryptoslam
• Documentation and FAQ: cryptoslam.gitbook.io/docs/
• API portal: cryptoslam.apiable.io/
• Careers: cryptoslam.breezy.hr/
• Email: [email protected]

These are the channels linked from the cryptoslam.io footer as of October 2026. Treat accounts or support agents found elsewhere with caution.