Centro Blockchain · Web3 system in English & Spanish
Create tokens and NFTs, send to thousands of wallets, certify files and swap tokens on Ethereum and Polygon with no code. And if you need something unique, we build it for you.
// 00 · The hub
Each tool solves one job end to end, with standard contracts verified on the block explorer. Practise for free on Sepolia, go live on mainnet and always sign from your own wallet. Nobody else touches your funds.
// 01 · Online products
Each app opens on its own secure domain. You’ll see exactly where you’re going before you enter.
Your own ERC-20 token, deployed in minutes, without writing code.
Turn your work into an NFT and pay only the network gas.
Tamper-proof evidence that a file existed, and who owned it, on a given date.
Pay hundreds of addresses in a single transaction and save up to 80% on gas.
Distribute tokens to your community with clear rules and zero manual work.
Look inside any wallet and truly understand the NFTs it holds.
A crypto wallet you open with your email. No seed phrase to lose.
The full history of any Ethereum address, in one clear report.
Trade one token for another in seconds, straight from your wallet.
// 02 · How it works
Use MetaMask or your Wallet Mail. Your keys never leave your wallet: you sign, you decide.
Run the same operation on the testnet with free test ETH. Same result, zero risk.
Once everything looks right, run it on Ethereum or Polygon and check it on the block explorer.
// 03 · Security
On a blockchain, transactions can’t be undone. That’s why transparency isn’t a feature: it’s the product.
Every contract is published and verified on Etherscan or Polygonscan. Code anyone can audit, with no hidden functions.
Transactions are signed in your wallet. We never hold your funds and will never ask for your seed phrase.
ERC-20 tokens and ERC-721 NFTs that work with every wallet, exchange and marketplace.
No tracking cookies, no analytics, no trackers. You browse anonymously.
We will never ask for
If anyone asks you for any of these in our name, it’s a scam.
// 04 · Custom services
Smart contracts, dApps, audits, DAOs, marketplaces and real‑world asset tokenization. Upfront spec, tests and public verification on every delivery.
// 05 · News
Ahead of their participation in LABITCONF 2026, leading figures in Latin America’s crypto ecosystem share the trends they are noticing, and those they expect to gain strength, across Bitcoin and Blockchain.
// 06 · FAQ
No. You fill in a form with your token or NFT details and the platform generates and deploys the smart contract for you. All you need is a wallet like MetaMask to sign the transaction.
You can try everything for free on the Sepolia testnet using test ETH. On mainnet you pay the Ethereum or Polygon network fee (gas) and, depending on the app, a small fee shown before you sign.
You sign every transaction from your own wallet, and we will never ask for your seed phrase or private keys. Contracts follow the ERC-20 / ERC-721 standards and are publicly verified so anyone can audit them.
The testnet (Sepolia) is a test network identical to the real one, but its coins have no value: ideal for practising risk-free. Mainnet (Ethereum or Polygon) is the real network, with real costs and irreversible transactions.
Ethereum offers maximum compatibility and reputation; Polygon offers much lower fees and fast confirmations. For large collections or frequent transfers, Polygon is usually the better choice.
Yes. We design and build smart contracts, dApps, DAOs, marketplaces, bridges and real-world asset tokenization, and audit third-party contracts. Tell us about your project through the form and we’ll send you a quote.
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// 07 · Contact
Tell us what you want to build or what you need help with. We reply within 24 business hours.