2025
Watch Out Bitcoin! Madrid — October 4-5, 2025
The largest Bitcoin conference in Spain.
Panel: Private, Usable, Sovereign: Can Bitcoin be all three? (English)
I moderated a panel focused on private, accessible and sovereign Bitcoin.
Panelists: Kilian Rausch, Sergi
Delgado, Ben Kaufman,
QnA and Arkad.
Panel: Cambios en el protocolo de Bitcoin (Spanish)
I also moderated the protocol panel with Kilian Rausch,
Sergi Delgado, and Unhosted
Marcellus.
We discussed ongoing directions for Bitcoin protocol evolution, focusing
particularly on the OP_RETURN debate and what defines a viable, long-term
upgrade path.
Videos will be published by the organizers.
Barcelona CyphersConference — June 6-7, 2025
Miniscript Roundtable (English) — Moderated by
Lunaticoin, with Édouard
Paris (Wizardsardine) and
Francesco Madonna
(Bitvault).
We dug into Miniscript adoption, policy composition and tooling for vaults.
Watch on YouTube
Interview — (English)
A long-form conversation about Rewind Bitcoin,
extortion resistance and physical attack scenarios, with Juan
Cienfuegos (El Salvador’s #1 Bitcoin-only podcast) and
Şelale Malkoçoğlu (European
Bitcoiners).
Watch on YouTube
Workshop: Inside Rewind Bitcoin (English)
A theory + hands-on session simulating an attack and full recovery (including
delegated recovery) and walking through how
Rewind’s vaulting flows work on Rewind’s testing
network.
Slides
Pears Interview — February 19, 2025
I was interviewed by the Pears team about Rewind
Bitcoin and its peer-to-peer backup
network, a decentralized layer where unknown
peers store encrypted fragments of wallet data that can only be reassembled
under specific, verifiable conditions.
We discussed how this network strengthens self-custody by removing single points
of failure, enabling users to preserve access to their Bitcoin even in cases of
theft, extortion, or loss.
Read the interview
Madrid Bitcoin Tuesdays — February 11, 2025
At the largest Bitcoin meetup in Madrid, I presented “Miniscript, Timelocks &
Covenants: Recovering from Theft” (Spanish).
I explored using Miniscript for structured recovery and real-world spending
policies.
Watch on YouTube
Slides
Meetup page
2024
Podcast with Juan Cienfuegos — December 17, 2024
Spanish-language podcast (with English subtitles) with Juan
Cienfuegos on
BitCorner, El Salvador’s leading Bitcoin-only
podcast.
We discussed wallet security design, recovery mechanisms and the ideas that led
to Rewind Bitcoin.
Watch on YouTube
Barcelona Bitcoin Only Meetup — November 7, 2024
Part of the BBO meetups (Barcelona Bitcoin Only), Spain’s oldest and most
cypherpunk Bitcoin gathering.
Talk: “Protecting your Bitcoin: anti-extortion wallets with Miniscript”
(Spanish).
I explained Miniscript vaults, time-locked recovery and delegated rescue.
Watch on YouTube
Slides
Meetup event
Crypto Panas Podcast — October 31, 2024
Spanish conversation about privacy, wallet resilience and the origin of
Rewind.
Watch on YouTube
Watch Out Bitcoin! Madrid — September 28, 2024
The largest Bitcoin conference in Spain.
Panel: “Bitcoin en movimiento: ¿hacia dónde estamos avanzando?” (Spanish)
I was one of the panelists in a discussion moderated by
Lunaticoin, alongside Diego
Gurpegui, Franco Amati,
Kilian Rausch, Lorena
Ortiz, Marco Argentieri
and Sergi Delgado.
We explored how Bitcoin has evolved, from protocol changes to self-custody
practices and usability, with perspectives ranging from its early years to
near-future improvements such as Lightning, Ark, Miniscript and Nostr Wallet
Connect.
Watch on YouTube
2023
Watch Out Bitcoin! Madrid — October 8, 2023
Talk: “Miniscript y la nueva capa de programación en Bitcoin” (Spanish)
The presentation explained how Miniscript allows wallets to safely construct
complex spending policies (like timelocks, multisig or recovery conditions)
using a standardized structure.
I also discussed its potential for vaulting, security automation and what it
could mean for future Bitcoin self-custody tools.
View slides
Barcelona Bitcoin Only Meetup — September 28, 2023
Part of the BBO meetups (Barcelona Bitcoin Only).
Talk: “Decoding Bitcoin: Miniscript & Descriptors” (Spanish).
I introduced Miniscript fundamentals and how they strengthen wallet security.
Watch on YouTube
Meetup event
BTC Azores 2023 — September 23, 2023
Talk: “Rapid Development of a Vault Mobile App” (English).
I showcased BitcoinerLAB libraries and how to build
a mobile vault app in under 800 lines of code.
Slides
Event site
Lunaticoin Live Coding Session — April 13, 2023
Live technical coding session (Spanish) with
Lunaticoin implementing a fallback timelock in a
Miniscript wallet using BitcoinerLAB.
Watch on YouTube
Guide
Lunaticoin Podcast — April 10, 2023
Interview with Lunaticoin, the largest
Spanish-language Bitcoin educator and podcaster.
We covered Miniscript, advanced wallet logic and why programmable spending
conditions matter.
Watch on YouTube