SCRAPECHAIN
Analyze the blockchain - Trading volume in USD, priced at trade time - A PUDDY STUDIOS tool
Paste a wallet address above to see exactly how much USD value has flowed through it.
What Is SCRAPECHAIN?
SCRAPECHAIN is a free blockchain analyzer from Puddy Studios. Paste any wallet address and it reports the total USD value that has flowed in and out of that address across native ETH, ERC-20 tokens, and NFTs (ERC-721 and ERC-1155), with every transfer priced at the market spot from the moment it happened. Paste an NFT contract and it reports lifetime trading volume across every marketplace - OpenSea, Blur, LooksRare, X2Y2, Sudoswap, and more - including the Blur Pool ETH settlement that most volume trackers silently miss.
There is no API key, no account, and no wallet connection. Wallet scans run directly in your browser against public Ethereum RPC endpoints. Full collection scans are a different animal - a popular collection carries tens of thousands of sales across years of history, far more than a browser tab can chew through - so those run on the Puddy scan engine, which reads the same keyless public endpoints and prices assets through the same public price index. Either way, once any visitor scans an address, the result joins a shared index and the next visitor gets it instantly.
How SCRAPECHAIN Works
The engine sweeps the chain for every transfer event where the address you enter is the sender or receiver, across every token contract at once. It then applies honest accounting rules. Self-transfers are dropped. Wrap and unwrap round trips are netted to zero. A routing wallet that receives and sends the same token inside one transaction counts only the net. Scam airdrops - The number one way naive analyzers inflate a wallet's "value in" - Are held out of the totals by a three-gate filter: a token must carry a real market price at confidence 0.90 or higher, must have been actually used by the wallet (not only received), and must clear a curated denylist of known non-currency tokens. Everything excluded is listed separately at zero dollars, so the headline number is defensible.
USD pricing is trade-time, not display-time. A sale that settled for 10 ETH in October 2022 is valued at ETH's October 2022 price, because that is what the money was worth when it moved. This matters: lifetime volume priced at today's spot can be wrong by a factor of two or more.
Art Gobblers Trading Volume - A Worked Example
The Collection tab ships with a fully audited analysis of the Art Gobblers NFT collection (contract 0x60bb...7769): more than 55,400 ETH and roughly 85.9 million dollars in lifetime trading volume at trade time, across more than 8,300 sales on 15 marketplaces. About 71 percent of that volume settled through the Blur ecosystem, much of it in Blur Pool ETH - A settlement token that many public trackers do not count, which is why their lifetime totals run lower. Every number traces back to public chain data that anyone can re-verify, and the methodology survived a 100-sample reconciliation audit with zero missed sales.
Frequently Asked Questions
How does SCRAPECHAIN calculate USD value?
Every transfer is priced at the asset's market spot on the day it happened, not at today's price. ETH and ETH-equivalents (WETH, Blur Pool ETH) use the historical ETH/USD spot. Stablecoins (USDC, USDT, DAI) count at one dollar. Other ERC-20 tokens are priced through DefiLlama's historical price index and only count when the price confidence is at least 0.90.
Do I need an API key or an account?
No. SCRAPECHAIN is keyless and free. Wallet scans read public Ethereum RPC endpoints directly from your browser - Large collection scans run on the Puddy scan engine, which uses the same keyless public endpoints. There is no signup and no wallet connection.
Why do the numbers differ from OpenSea or Etherscan?
SCRAPECHAIN reads raw on-chain settlement across every marketplace, including Blur Pool ETH that many trackers miss, and prices each trade at trade time. Marketplace sites usually show a curated subset of venues, apply their own filtering, and price at display time. Raw cross-marketplace truth is usually higher than a single marketplace's number.
How are scam airdrops kept out of the totals?
Three gates protect the headline number. A token must have a real market price at confidence 0.90 or higher. A token the wallet only ever received and never sent is treated as a likely airdrop and excluded. Self-transfers and same-transaction round trips are netted out. Excluded tokens are listed separately at zero dollars so nothing is hidden.
Are NFTs given a dollar value?
Bare NFT transfers are counted, not valued, because an NFT transfer carries no intrinsic dollar amount unless it was sold. When an NFT sale settles in ETH or another priced token, that payment leg is already counted in the fungible totals, so nothing is double-counted.
Is my data private?
Everything analyzed is public blockchain data. Wallet scans run in your own browser. Collection scans run on the Puddy scan engine because full marketplace histories are too large for a browser tab. The only thing stored is the finished result of a scan, cached so the next person who looks up the same address gets an instant answer. No personal data, no tracking of who searched.