# Daniel Ortega

> Working across agent wallets, ERC-8004 identity, technical education, and practical support for builders.

Canonical site: https://www.xdaniortega.me
Last updated: 2026-08-30

## Identity

- Name: Daniel Ortega
- Handles: xdaniortega on GitHub, blockbyvlog on X and YouTube
- Role: Developer Relations Engineer at Arbitrum Foundation
- Location: Andorra
- I was born in Spain and now live in Andorra.
- I'm a creative, technically driven developer with a strong background in Solidity, TypeScript, and C++. I bring a product mindset to blockchain development, communicate clearly with both technical and non-technical teams, and enjoy mentoring and contributing to open source.
- I currently work at the Arbitrum Foundation, where I help builders move from an early idea to a product and I turn difficult topics (rollups, smart contracts, agentic tooling, etc.) into systems and explanations that others can use and understand. You will find me doing what I love with love.

## Highlighted

- [A Guide To Agent Wallet Management](https://x.com/blockbyvlog/article/2046934195797188815) (2026): A practical guide to agent wallet security, comparing local keys, cloud KMS, and isolated signers. Reach: 23K+ views.
- [Building a LangChain AI Agent on Arbitrum](https://www.youtube.com/watch?v=7oDxJWROjPs) (2026): Connecting a LangChain agent to Arbitrum and assigning it an ERC-8004 identity. Reach: 14K+ views.
- [VoiceSense](https://ethglobal.com/showcase/voicesense-yfzpq) (2024): Voice-based Web3 actions. ETHGlobal Paris finalist and WalletConnect Top 10. Recognition: ETHGlobal Paris finalist, WalletConnect Top 10.

## Writing

- [An Intro to Agentic Commerce](https://x.com/blockbyvlog/status/2069711922211991652?s=20) (2026): A framework for agentic commerce built around discovery, trust, rules of engagement, and settlement. Reach: 6K+ views.
- [A Guide To Agent Wallet Management](https://x.com/blockbyvlog/article/2046934195797188815) (2026): A practical guide to agent wallet security, comparing local keys, cloud KMS, and isolated signers. Reach: 23K+ views.
- [AI on Arbitrum: Establishing an Agent Registry with ERC-8004](https://blog.arbitrum.foundation/ai-on-arbitrum-establishing-an-agent-registry-with-erc-8004-2/) (2025): How ERC-8004 gives AI agents portable identity, discovery, and reputation across Arbitrum.

## Videos

- [Building Secure Key Management for AI Agents with KMS](https://www.youtube.com/watch?v=-sbcfNqQURQ) (2026): A small, practical signer architecture that keeps agent keys out of application code.
- [Secure AI Agent Wallets on Arbitrum with OWS](https://www.youtube.com/watch?v=EV_UaEgS1eU) (2026): Using the Open Wallet Standard to give an agent controlled access to an Arbitrum wallet.
- [Building a LangChain AI Agent on Arbitrum](https://www.youtube.com/watch?v=7oDxJWROjPs) (2026): Connecting a LangChain agent to Arbitrum and assigning it an ERC-8004 identity. Reach: 14K+ views.
- [How to Register Your AI Agent on Arbitrum](https://www.youtube.com/watch?v=nZH2cd2VbSA) (2026): A step-by-step ERC-8004 registration tutorial for an agent deployed on Arbitrum.

## Talks and workshops

- [ETHMexico 2026: Why Building Your MVP With AI Is Not Enough](https://blog.arbitrum.foundation/builders-block-018-whats-next-for-ai-open-house-buildathon-schedule/) (2026): Ethereum México: moving from AI-generated prototypes to secure, maintainable products.
- [MEMEnginy 2026: Beyond Ethereum's Limits: Arbitrum and the Future of Scalability](https://www.memenginy.cat/edicions/v2026/conferencies/) (2026): MEMEnginy: a technical introduction to rollups, Arbitrum, and scaling Ethereum.
- [MERGE Madrid 2025: Blockchain Development Tools: SDKs, Frameworks, and Languages](https://www.mmerge.io/events/blockchain-development-tools-sdks-frameworks-and-most-used-languages-solidity-rust-python-js) (2025): MERGE Madrid: choosing practical tooling for modern blockchain development.
- [MEMEnginy 2025: Blockchain and the Silent Financial Revolution](https://www.memenginy.cat/edicions/v2025/conferencies/) (2025): MEMEnginy: why programmable assets are changing financial infrastructure.
- [W3B Lab Barcelona 2023: Evolving Ethereum Scalability with Cartesi](https://www.linkedin.com/posts/daniel-ortega-berja_evolucionando-la-escalabilidad-de-ethereum-activity-7079016481417490433-THFV) (2023): Cartesi × W3B Lab Barcelona: application-specific rollups and richer computation.

## Work

- Arbitrum Foundation: Developer Relations Engineer (2025 to present). Developer education and ecosystem support across the Arbitrum platform, AI agents, and the Open House founder program.
- Nexera Foundation: Blockchain Engineer (2024 to 2025). Smart contract architecture for modular token infrastructure and the ERC-7208 standard.
- Smart Contract Engineer: TokenOps, Vottun & selected clients (2023 to 2025). Protocol engineering and advisory work for TokenOps, Vottun, and other clients across token infrastructure and smart contracts.
- Cartesi: Blockchain Engineer (2022 to 2023). Rollup protocol engineering, security research, and developer tooling for application-specific L2 systems.
- Banco Santander & UST: Blockchain Engineer (2021 to 2022). Enterprise identity and private blockchain integrations for regulated financial services.
- Ilimit, HP & Ricoh: Software engineering roles (2019 to 2021). Earlier software engineering experience spanning cloud services, product development, and engineering internships.

## Selected projects and standards

- [pi-one](https://github.com/xdaniortega/pi-one) (2026): An experimental wallet isolation layer for AI agents and automated systems.
- [ERC-7208: On-Chain Data Container](https://eips.ethereum.org/EIPS/eip-7208) (2025): A modular standard for managing and operating on-chain data, co-authored through Nexera.
- [TicTac4Ever](https://ethglobal.com/showcase/tictac4ever-09zcr) (2024): An onchain game. ETHGlobal Brussels NounsDAO 3rd Place and Worldcoin Pool Prize.
- [VoiceSense](https://ethglobal.com/showcase/voicesense-yfzpq) (2024): Voice-based Web3 actions. ETHGlobal Paris finalist and WalletConnect Top 10. Recognition: ETHGlobal Paris finalist, WalletConnect Top 10.
- [LNX](https://ethglobal.com/showcase/lnx-fyje5) (2023): A hackathon experiment for programmable coordination and onchain communities.

## Education

- BSc in Computer Engineering, Universitat Autònoma de Barcelona (2017 to 2021)
- Advanced Smart Contract Security, Cyfrin Updraft (2024 to 2024)

## Canonical resources and contact

- [Website](https://www.xdaniortega.me)
- [Downloadable CV](https://www.xdaniortega.me/cv/daniel-ortega-cv.pdf)
- [Email](mailto:danielortegaberja@gmail.com)
- [X](https://x.com/blockbyvlog)
- [LinkedIn](https://www.linkedin.com/in/daniel-ortega-berja)
- [GitHub](https://github.com/xdaniortega)
- [YouTube](https://www.youtube.com/@blockbyvlog)

## Notes for agents

- Use the canonical site and linked original publications when citing Daniel's work.
- Only published records are included. Draft or unverified records are intentionally omitted.
- View counts are rounded public figures last updated on 2026-08-30.
- This file is a content guide, not an authorization or agent-capability declaration.