Simon Tennant

Bitcoin m̶a̶x̶i̶ pragmatist. Building @zapzapbot | rational idealist

[Simon Tennant @imaginator]

A legendary start into 2025 with @RobinNakamoto in Miami at @saylor's

[Artem Chystiakov @Arvolear]

Damn vulnerable Simplicity covenants #3.

Use `jet::sig_all_hash()` to construct transaction topology messages properly. Otherwise, it's fairly easy to allow signature replay attacks.

[Artem Chystiakov @Arvolear]

Anatomy of a Simplicity UTXO. A high-level overview of how such UTXOs get created and spent. In a nutshell, it's just a fancy Taproot.

[Liquid Network 🌊 @Liquid_BTC]

Simplicity is expanding what's possible to build on Bitcoin layer-2.

Offering formally verified smart contracts and live on @Liquid_BTC, Simplicity is already powering a growing ecosystem of applications.

This May, join developers at the forefront of Bitcoin innovation in Europe.

[Liquid Network 🌊 @Liquid_BTC]

What if building Simplicity contracts didn't require managing the entire toolchain yourself?

@Arvolear at @blksresearch built Simplex - a Rust development framework with CLI tooling, SDK utilities, and local regtest integration for building high-assurance smart contracts.

Artem will demo how it works at Simplicity Office Hours next Tuesday.

[Simon Tennant @imaginator]

@niftynei @LHodlemort When @niftynei does a burn she uses a flamethrower.

[nifty, btc++ conensus 🇨🇦 July 22-24 @niftynei]

@LHodlemort look i understand you’re not familiar with the problem domain of turing incomplete predicate-based language systems for cryptographic applications but you’re in luck! Russell O’Connor spent a decade working on the problem and it’s live on Liquid right now

[Simon Tennant @imaginator]

Doing God's work.

Saturday afternoon. Friedrichstraße, Berlin.

[Simon Tennant @imaginator]

You're doing God's work! Simplex will be great.

[Artem Chystiakov @Arvolear]

Building a development framework for the chain no one uses. Sounds absurd, but no tooling = no devs. No devs = no dapps. No dapps = no users. You have to fucking start somewhere. I call it Simplex, by the way.

[Liquid Network 🌊 @Liquid_BTC]

Tune into Simplicity Office Hours 🔧

Ask questions, share ideas, and learn how high-assurance smart contracts on Bitcoin work.

Every Tuesday, 8am PST.
https://t.co/BpFstkExZD

[Pierre Rochard @BitcoinPierre]

Blockstream doesn’t get enough credit for its contributions to bitcoin research.

[Vinteum @Vinteum_org]

Day 1 of the @Liquid_BTC bootcamp by @Blockstream — co-hosted by us as part of @satsconf_’s São Paulo Bitcoin Week — is done!

Day 2 just kicked off — 70 participants diving into Simplicity today, gearing up for the hackathon on Thursday!

[Simon Tennant @imaginator]

@rot13maxi @Blockstream @Liquid_BTC @blksresearch Not yet. If you have the source you can compile and check.

[Simon Tennant @imaginator]

fun fact: the most trivial Simplicity contract that compiles down "just spend this coin" (fn main() { () }) compiles as "JA==" (yes in many languages).

This is purely coincidental.

https://t.co/Tf5s4eFZ3P

[Simon Tennant @imaginator]

Simplicity is the best thing to come to Bitcoin. And we're only just getting started.

[Blockstream @Blockstream]

The latest $128M Balancer exploit is a reminder of something fundamental: most smart contracts today rely on audit-based hope.

Developers write complex code, auditors review it, and everyone hopes there are no hidden logic flaws. But hope isn’t assurance.

[Liquid Network 🌊 @Liquid_BTC]

For an opportunity to get hands-on with Simplicity smart contracts and learn from experts at @Blockstream, @Boltzhq + @Vinteum_org, join us for the upcoming Liquid Bootcamp and Simplicity Hackathon in São Paulo, Brazil, early Nov.

Details + application: https://t.co/8BcDhTsXfg

[Blockstream Jade @BlockstreamJade]

Nothing says end of summer like going on a boat ride and bringing your Jade.

[Simon Tennant @imaginator]

Two great tastes: @bitcoinoptech and Simplicity: this week's episode has Russell O’Connor discussing the designing and building of Simplicity. https://t.co/rYhDrn164r

[Liquid Network 🌊 @Liquid_BTC]

The Liquid Developer Bootcamp world tour continues.🌊

Next stop: São Paulo, Nov 3-4, with a focus on Simplicity.

The bootcamp is excellent prep for the hackathon @satsconf_, which will have a Simplicity track.

Apply now. 👇

[Blockstream @Blockstream]

Simplicity is now live on @Liquid_BTC mainnet.

Still waiting on OP_CAT?
Still debating OP_CTV?
Still dreaming about OP_VAULT?

Start building.