TRENCHCOAT
Website blueprint · 16 Oct 2026

etapelabs.xyz

“ETAPE | Ethereum Circuit Lab”

Template-written 30 evidence items REA analysed 5 scripts
What this means for you

ETAPE talked to 1 outside service on a first visit.E6

  • Tech check: the site claims on-chain / smart contracts and wallet connection, and its public page shows matching evidence.E28E29E27E6E16
  • Tech check: the site mentions live data / analytics, but we found nothing behind it in what its public page loads.E30
  • We saw no known analytics or advertising services load on the first visit.E1
  • Its code can ask your wallet to sign structured data (logins, orders or off-chain approvals), send transactions and sign transactions. Read every wallet pop-up before approving.E16E17E20

Tech check

What the site says about itself, next to what its public page actually loads. Facts only, no verdict: you decide.

Evidence found

On-chain / smart contracts

“…practice. 8 practice levels Browser simulator Optional onchain Token / Ethereum 0xA5D0F84a8693e5B4E63840aEf4327451364…”E28

Blockchains named in its code: EthereumE27

Blockchain services it contacts: PublicNodeE6

Wallet requests in its code: eth_signTypedData, eth_sendTransaction, signTransactionE16E17E20E15

Evidence found

Wallet connection

“Skip to content Overview Product Resources Connect wallet ETAPE / CIRCUIT LAB Build circuits. See what happens.…”E29

Wallet libraries in its code: ethers.js, EIP-6963 wallet discoveryE9E10

Wallet requests in its code: eth_signTypedData, eth_sendTransaction, signTransactionE16E17E20E15

Nothing found on the public page

Live data / analytics

“…t 1 Open in workbench High Low Flip A or B. Follow the signal. Learn the gates Training Eight puzzles, from a one-ga…”E30

No matching code, calls or services in what loaded for us.

Calls its own backend none seen
Wallet code ethers.js, EIP-6963 wallet discoveryE9E10E16E17
Contract calls in its code none seen
Talks to AI services none seen
Live connections none seen

Contract address on the page: 0xa5d0f8…025e · check the contract

What it is

  • The site describes itself as: “An Ethereum circuit lab in your browser. Build and test NAND circuits and solve eight free practice puzzles. No wallet needed to build or pr”E2
  • It's built with React (common tools for building web apps).E8
  • In your browser it can copy text to your clipboard and saves small bits of data in your browser.E11E12

Where your data goes

Crypto & walletsConnect wallets, read blockchains or fetch token prices. 1
ethereum-rpc.publicnode.comPublicNode: free blockchain node 19×E6

Crypto and wallets

  • Wallet tools in the code: ethers.js and EIP-6963 wallet discovery.E9E10
  • eth_signTypedData: asks you to sign structured data (can be a login, an order or an off-chain token approval).E16
  • eth_sendTransaction: asks your wallet to send a transaction (can move funds and costs a fee).E17
  • signTransaction: asks a wallet to sign transactions (often Solana wallets).E20
  • personal_sign: asks you to sign a text message (often to log in; moves no funds by itself).E15
  • eth_requestAccounts: asks to connect your wallet, which shows the site your address.E14
  • wallet_switchEthereumChain: asks your wallet to switch networks.E18
  • Chains named in the code: Ethereum.E27
  • 6 contract or wallet addresses are written into the code, including WETH on Ethereum.E26
6 addresses found in the code
0xa5d0f84a8693e5b4e63840aef43274513643025e0x4240dd19bfc898f8c979d1187d0a86fb14d62d4f0xef3565344cf721b77fa060b1fe3f966af5decb330x00000000000c2e074ec69a0dfb2997ba6c7d2e1e0xeeeeeeee14d718c2b47d9923deab1335e144eeee0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2 · WETH on Ethereum

Paste any of these into the box on the home page to get the contract's blueprint.

How key features work

What it can ask your wallet to sign

Its code can ask your wallet for eth_signTypedData, eth_sendTransaction and signTransaction. Each of these opens a wallet pop-up you must approve; read it before you click.E16E17E20

eth_signTypedDataeth_sendTransactionsignTransaction

Connecting your wallet

It connects to crypto wallets using ethers.js, EIP-6963 wallet discovery, eth_signTypedData, eth_sendTransaction and 1 more. Connecting shows the site your wallet address; it doesn't move funds by itself.E9E10E14E18E6

ethers.jsEIP-6963 wallet discoveryeth_signTypedDataeth_sendTransactionsignTransaction

Reading the blockchain

It reads blockchain data (Ethereum and ethereum-rpc.publicnode.com) to show balances, prices or contract state.E27E6

Ethereumethereum-rpc.publicnode.com

Saving data on your device

It saves data in your browser (localStorage), so some things persist between visits.E12E7

local_storagelocalStorage

Cookies and storage

Names only. We never store the values.

localStorageE7: etape-workspace-v1

Pages and API calls

Pages it links to

/

Evidence

Every sentence above points to one of these. Code references show the file, line:column and the short identifier that matched, never the site's code itself.

E1
Page title: ETAPE | Ethereum Circuit Lab
page title · https://etapelabs.xyz/
E2
Page description: An Ethereum circuit lab in your browser. Build and test NAND circuits and solve eight free practice puzzles. No wallet needed to build or practice.
page description · https://etapelabs.xyz/
E3
Site name: ETAPE
page site_name · https://etapelabs.xyz/
E4
Main heading: Build circuits. See what happens.
page h1 · https://etapelabs.xyz/
E5
8 request(s) to etapelabs.xyz
types: 4 script, 2 font, 1 document
GET https://etapelabs.xyz/ · script · 8 requests · network recording
E6
19 request(s) to ethereum-rpc.publicnode.com
types: 19 fetch
GET https://ethereum-rpc.publicnode.com/ · fetch · 19 requests · network recording
E7
localStorage: 1 key(s) saved in your browser
localStorage keys: etape-workspace-v1 · values not stored
E8
React detected by REA (react-runtime)
confidence: medium
etapelabs.xyz/assets/index-DNvud7sw.js · “react-runtime” · REA analyze-web-bundle 6.4.0
E9
ethers.js found in the code
etapelabs.xyz/assets/web3-D2boWUky.js @ 1:29375 · “ethers.js” · pattern scan
E10
EIP-6963 wallet discovery found in the code
etapelabs.xyz/assets/web3-D2boWUky.js @ 1:258447 · “eip6963:announceProvider” · pattern scan
E11
Uses the browser ability: clipboard_write
can copy text to your clipboard
etapelabs.xyz/assets/index-DNvud7sw.js @ 10:106589 · “clipboard.writeText(” · pattern scan
E12
Uses the browser ability: local_storage
saves small bits of data in your browser
etapelabs.xyz/assets/index-DNvud7sw.js @ 10:65040 · “localStorage.setItem(” · pattern scan
E13
1 links to pages on the same site
page links · https://etapelabs.xyz/ · /
E14
Wallet request in code: eth_requestAccounts
asks to connect your wallet, which shows the site your address
etapelabs.xyz/assets/web3-D2boWUky.js @ 1:252659 · “eth_requestAccounts” · pattern scan
E15
Wallet request in code: personal_sign
asks you to sign a text message (often to log in; moves no funds by itself)
etapelabs.xyz/assets/web3-D2boWUky.js @ 1:245334 · “personal_sign” · pattern scan
E16
Wallet request in code: eth_signTypedData
asks you to sign structured data (can be a login, an order or an off-chain token approval)
etapelabs.xyz/assets/web3-D2boWUky.js @ 1:245587 · “eth_signTypedData_v4” · pattern scan
E17
Wallet request in code: eth_sendTransaction
asks your wallet to send a transaction (can move funds and costs a fee)
etapelabs.xyz/assets/web3-D2boWUky.js @ 1:244214 · “eth_sendTransaction” · pattern scan
E18
Wallet request in code: wallet_switchEthereumChain
asks your wallet to switch networks
etapelabs.xyz/assets/web3-D2boWUky.js @ 1:266698 · “wallet_switchEthereumChain” · pattern scan
E19
Wallet request in code: wallet_addEthereumChain
asks your wallet to add a network
etapelabs.xyz/assets/web3-D2boWUky.js @ 1:266896 · “wallet_addEthereumChain” · pattern scan
E20
Wallet request in code: signTransaction
asks a wallet to sign transactions (often Solana wallets)
etapelabs.xyz/assets/web3-D2boWUky.js @ 1:241042 · “signTransaction” · pattern scan
E21
Address in code: 0xa5d0f84a8693e5b4e63840aef43274513643025e
etapelabs.xyz/ (page HTML) @ 35:25632 · “0xa5d0f84a8693e5b4e63840aef43274513643025e” · pattern scan
E22
Address in code: 0x4240dd19bfc898f8c979d1187d0a86fb14d62d4f
etapelabs.xyz/assets/index-DNvud7sw.js @ 10:57472 · “0x4240dd19bfc898f8c979d1187d0a86fb14d62d4f” · pattern scan
E23
Address in code: 0xef3565344cf721b77fa060b1fe3f966af5decb33
etapelabs.xyz/assets/index-DNvud7sw.js @ 10:57691 · “0xef3565344cf721b77fa060b1fe3f966af5decb33” · pattern scan
E24
Address in code: 0x00000000000c2e074ec69a0dfb2997ba6c7d2e1e
etapelabs.xyz/assets/web3-D2boWUky.js @ 1:211922 · “0x00000000000c2e074ec69a0dfb2997ba6c7d2e1e” · pattern scan
E25
Address in code: 0xeeeeeeee14d718c2b47d9923deab1335e144eeee
etapelabs.xyz/assets/web3-D2boWUky.js @ 1:217115 · “0xeeeeeeee14d718c2b47d9923deab1335e144eeee” · pattern scan
E26
Address in code: 0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2 (WETH on Ethereum)
etapelabs.xyz/assets/web3-D2boWUky.js @ 1:259944 · “0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2” · pattern scan
E27
Chain in code: Ethereum
etapelabs.xyz/assets/index-DNvud7sw.js @ 10:57639 · “ethereum-rpc” · pattern scan
E28
The site says: “…practice. 8 practice levels Browser simulator Optional onchain Token / Ethereum 0xA5D0F84a8693e5B4E63840aEf4327451364…”
page text · https://etapelabs.xyz/ · …practice. 8 practice levels Browser simulator Optional onchain Token / Ethereum 0xA5D0F84a8693e5B4E63840aEf4327451364…
E29
The site says: “Skip to content Overview Product Resources Connect wallet ETAPE / CIRCUIT LAB Build circuits. See what happens.…”
page text · https://etapelabs.xyz/ · Skip to content Overview Product Resources Connect wallet ETAPE / CIRCUIT LAB Build circuits. See what happens.…
E30
The site says: “…t 1 Open in workbench High Low Flip A or B. Follow the signal. Learn the gates Training Eight puzzles, from a one-ga…”
page text · https://etapelabs.xyz/ · …t 1 Open in workbench High Low Flip A or B. Follow the signal. Learn the gates Training Eight puzzles, from a one-ga…

Limits

  • We only see what your browser sees: code and requests on a first visit, without logging in or accepting cookie banners. What the servers do with data is invisible from outside.
  • Site code is usually minified (compressed), so names are partly lost and some code may be only partly analysed.
  • Some trackers only load after you accept cookies or log in, so the real list can be longer.
  • We visited from a server in the United States. Sites load different trackers and cookie banners in different countries (visitors in the EU usually get a consent banner first).
  • The tech check compares the site's own words with what its public page loads. Work done on servers, in private code or in separate apps isn't visible here, so 'nothing found' means not visible on the public page, not that it doesn't exist.
  • This text was written from fixed templates because no AI writer was available. It uses exactly the same evidence.
  • REA hit its size budget on parts of 1 large bundle file(s); those parts weren't fully analysed.

Facts, not judgements: this page describes what the code and traffic show, not anyone's intent. Not financial advice. Case id 5DTVkxqA.