Cybersecurity · Blockchain · Web3
I build on-chain products where documents, votes, memories and assets don't depend on anyone's word. And I defend them.
Genesis · Block 0
It all starts with one node.
Then thousands. No one in charge.
Every transaction, verified by all.
Chapter I · In progress
These seventeen are the projects I'm immersed in today. Before them came many others that are now part of the chain's past. They all share one premise: the proof is written where no one can erase it.
Active · 2026
Earlier blocks: many other projects, now in the history · genesis 0xea0d76…8cad
All of blockchain. In one centre.
Nine Web3 apps in one centre: create ERC-20 tokens and NFTs, send to thousands of wallets with up to 80% less gas, run airdrops, certify files and swap tokens on Ethereum and Polygon without coding. Rehearse for free on Sepolia, sign from your own wallet and, if you need something unique, get it custom-built.
At the centre of blockchain solutions.
Blockchain consulting and technology for businesses, from Barcelona: tailor-made solutions, crypto-asset custody, asset tokenization and private networks. IBM technology partner and creator of HyperGalax, HyperSTO and HyperNifty.
Real assets. Regulated tokens.
Turns real estate, gold, diamonds or energy into security tokens and takes them to market with CNMV authorization. It structures, issues and distributes the STO end to end under Spain's Law 6/2023 and MiCA. No real asset, no token.
The digital twin of everything that matters.
Links every physical object to a unique, unforgeable NFT through an NFC chip or secure QR code: it certifies authenticity, keeps the object's history and unlocks experiences, warranties and royalties for whoever owns it.
A galaxy of networks.
Sede Blockchain's enterprise blockchain network: a private core on Hyperledger Fabric, the technology backed by IBM, connected to Ethereum, Polygon and other public networks. Private, public and hybrid in a single infrastructure, averaging 3,000 transactions per second.
The Bitcoin network, alive before your eyes.
A 3D neural network of Bitcoin nodes where transactions leap from node to node like lightning. Rotate it, change its density and fire your own discharges with a click.
Your Bitcoin address, created in your browser.
Generate a free SegWit (bc1q) Bitcoin address with its 12- or 24-word BIP39 seed phrase and take it with you as a PDF paper wallet. No servers, no cookies, with bulk generation and an offline version. For tips, gifts and small amounts.
Live Bitcoin. In every form.
The official BITCOIN® store in Spain, licensed under the trademark registered with the Spanish Patent and Trademark Office (OEPM) since 2017: cold wallets, mining rigs, wallet watches, apparel and original merchandise, secure payment and shipping across the EU. Exclusive: your seed phrase engraved on diamonds.
Your crypto wallet, in your inbox.
A crypto wallet with nothing but your email address: no apps, no extensions and no seed phrases. Sign in with your email and start receiving, holding and sending crypto.
Tokens, NFTs and airdrops without writing code.
Create ERC-20 tokens, free NFTs, airdrops and bulk transfers, and certify files on Ethereum and Polygon. Contracts verified on Etherscan, free testing on Sepolia and no cookies.
Sustainable diamonds, tokenized investment.
Spain's first tokenized debt issuance under the new Securities Market Law: a €5M security token backed by diamonds, supervised by the CNMV and traceable security by security on-chain.
Love for a club, forever.
White-label SaaS joining physical columbaria in the stadium with a digital legacy: memorials, matches attended, QR/NFC-authenticated memorabilia and private messages. All certified on-chain.
What you live at the Camp Nou, recorded forever.
A place at the Spotify Camp Nou where members and fans record their stadium experiences on the blockchain: matches, visits and memories beside the pitch, timestamped and tamper-proof.
Your document, sealed on the blockchain.
Register the SHA-256 fingerprint of any file on Polygon or Ethereum without the file ever leaving your device. You get a PDF certificate with a verifiable QR code: timestamped proof of existence and integrity.
Messages that open in the future.
End-to-end encrypted messages or files for someone to open on a set date. Only the cryptographic fingerprint goes on Polygon: a tamper-proof timestamp and complete privacy.
Production-grade Web3, security first.
Blockchain development studio with 13 services: NFT contracts, custom tokens, DAOs and real-world asset tokenization. Live demo, multichain deployment and an audit before mainnet.
One person, one vote. No tricks.
Secure, transparent online voting. Passwordless access with MetaMask or email, a single vote per poll and results that update instantly.
Chapter II · The shield
Half of my work is looking at the chain from the other side: following the money, finding the bug before the attacker does and designing systems that don't keep what they shouldn't.
Tracing funds across wallets, exchanges and mixers. Address attribution and flow maps ready for a report.
Reconstructing incidents, scams and thefts with verifiable on-chain evidence. Our own scam database.
Manual and automated review before mainnet: reentrancy, access control, oracles, economic logic.
End-to-end encryption and architectures where sensitive data never touches a server. Only the fingerprint goes on-chain.
Illustrative simulation · fictitious data
Chapter III · Your block
Type some text or drop a file. Your browser computes its SHA-256 fingerprint and mines a real proof-of-work block. Nothing leaves your device.
Chapter IV · The lab
Forks I study, audit and adapt: from Bitcoin's core to AI-driven pentesting. A selection here; the rest lives on GitHub.
Genesis of what's next
Web3 projects, audits or an on-chain investigation. I answer personally.
Don't expect a contact form like everyone else's. I'm different, and you're looking for the difference. I'm sure you'll find your way to me.
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