https://conduition.io/ https://conduition.io/images/flash-circuit-512.png https://conduition.io/ The personal blog of a pseudonymous cypherpunk. My specialties are cryptography, scriptless smart contracts, and multi-party computation. - [View my code on Github.](https://github.com/conduition) <a class="icon u-url" target="_blank" rel="noopener me" href="https://github.com/conduition" aria-label="github" title="github"><i class="fa-brands fa-github"></i></a> - Contact me by email at <a href="mailto:conduition@proton.me">conduition@proton.me</a> - [Download my PGP key here. <img src="/images/gnupg-logo.png" style="height: 14px;">](/meta/conduition.key.asc) - Discord: `conduition` - Matrix: `conduition:matrix.org` [Follow me on Nostr](https://iris.to/npub1l6uy9chxyn943cmylrmukd3uqdq8h623nt2gxfh4rruhdv64zpvsx6zvtg). - Pubkey: `npub1l6uy9chxyn943cmylrmukd3uqdq8h623nt2gxfh4rruhdv64zpvsx6zvtg` - Profile: `nprofile1qqs0awzzutnzfj6cudj03a7txc7qxsrma9ge44yrym6337tkkd23qkg32nsh9` - NIP-05: `conduition@conduition.io` Connect with my Lightning node: - Pubkey: `0207ebfbf356bc761a74d2385b5978d88e37a1ea7e2ff30f9fed4813edee2052ba` - Clearnet IP: `198.199.70.218:9735` - TOR: `conduit4u4zsimbgvcatj6lyy36ot6k7w7bvbvivgwhbgzs7gfds7qad.onion:9735` - Lightning Address: `conduition@conduition.io` Subscribe using [RSS](/rss2.xml) or [Atom](/atom.xml) <img src="/images/rss.ico" style="height: 14px;"> # My Work My current focus is post-quantum cryptography. [My research into parallelism](/code/fast-slh-dsa/) produced [`slhvk`](https://github.com/conduition/slhvk): the fastest CPU implementation of [SPHINCS/SLH-DSA](https://csrc.nist.gov/pubs/fips/205/ipd) available anywhere. I was the first to [suggest using isogeny-based cryptography to realize post-quantum replacements for BIP32](/cryptography/isogenies-intro/) and other Bitcoin-adjacent cryptographic techniques. I maintain the [`secp`](https://crates.io/crates/secp), [`musig2`](https://crates.io/crates/musig2), and [`qudoku`](https://crates.io/crates/qudoku) Rust crates, and I love to contribute to cryptographic open source projects which pique my interest. I'm a part-time contributor to [the `rust-bitcoin` ecosystem](https://github.com/rust-bitcoin/rust-bitcoin/pulls?q=is%3Apr+author%3Aconduition) and to [`electrs`](https://github.com/romanz/electrs/pulls?q=is%3Apr+author%3Aconduition). I invented the [Ticketed DLC protocol](https://github.com/conduition/dlctix), to scale multi-party Discreet Log Contracts with Lightning. Outside the world of Bitcoin, I also [made the news](https://www.404media.co/ticketmaster-used-revolving-barcodes-to-control-ticket-resale-market-and-surveil-customers-doj-alleges/) by [reverse-engineering TicketMaster's SafeTix barcode technology](/coding/ticketmaster/). # Hiring - 🕰️ I have years of experience working in the cryptocurrency industry and other security-centric work environments. - 🧑‍💻 I'm strongly proficient in Python, JavaScript, Golang, and Rust. - 💻 I have written and maintained front-end desktop apps used by hundreds of thousands of people. - 📡 I have designed and written back-end server architectures which securely process traffic from millions of clients. - 💸 I have earned thousands of USD in bug bounties. As you can also see from [my scribblings](/archives/), I'm the kind of developer who likes to dig deep into the highly technical mathematical inner workings of protocols which others take for granted. <a href="mailto:conduition@proton.me">Contact me by email</a> to discuss contract based consulting or development work payable in Bitcoin. I'll also consider long-term contracts or sponsorships depending on the subject matter. # Corrections Notice any errors in this blog? Please let me know! 🧹 <a href="mailto:conduition@proton.me">Contact me by email</a> or [suggest an edit on Github](https://github.com/conduition/conduition.io). Sun, 17 May 2026 17:09:35 GMT http://hexo.io/ https://conduition.io/cryptography/hypertree-pruning/ https://conduition.io/cryptography/hypertree-pruning/ Mon, 20 Apr 2026 00:00:00 GMT How to generate and sign with SLH-DSA very quickly, with only mild side effects. cryptography https://conduition.io/cryptography/hypertree-pruning/#disqus_thread https://conduition.io/cryptography/isogenies-intro/ https://conduition.io/cryptography/isogenies-intro/ Thu, 12 Mar 2026 00:00:00 GMT How isogenies can solve Bitcoin's Quantum problems cryptography https://conduition.io/cryptography/isogenies-intro/#disqus_thread https://conduition.io/code/fast-slh-dsa-verification/ https://conduition.io/code/fast-slh-dsa-verification/ Sun, 25 Jan 2026 00:00:00 GMT Detailed comparison of SLH-DSA and BIP340 Schnorr verification algorithms. code https://conduition.io/code/fast-slh-dsa-verification/#disqus_thread https://conduition.io/code/cashu-disclosure/ https://conduition.io/code/cashu-disclosure/ Sat, 10 Jan 2026 00:00:00 GMT I found some vulnerabilities in Cashu's protocol for deterministic wallet recovery. code https://conduition.io/code/cashu-disclosure/#disqus_thread https://conduition.io/code/fast-slh-dsa/ https://conduition.io/code/fast-slh-dsa/ Sun, 23 Nov 2025 00:00:00 GMT Performance research and benchmarks of optimizations to SLH-DSA (SPHINCS+) code https://conduition.io/code/fast-slh-dsa/#disqus_thread https://conduition.io/scriptless/dlc-factory/ https://conduition.io/scriptless/dlc-factory/ Sat, 11 Jan 2025 00:00:00 GMT Bitcoin smart contracts which can be extended infinitely and interrupted at any time. scriptless https://conduition.io/scriptless/dlc-factory/#disqus_thread https://conduition.io/bitcoin/zkpreimage/ https://conduition.io/bitcoin/zkpreimage/ Sat, 02 Nov 2024 00:00:00 GMT Using zero-knowledge proofs to convert a standard HTLC into the purchase of a secret with arbitrary properties. bitcoin https://conduition.io/bitcoin/zkpreimage/#disqus_thread https://conduition.io/cryptography/quantum-hbs/ https://conduition.io/cryptography/quantum-hbs/ Mon, 21 Oct 2024 00:00:00 GMT All safe roads once were wild. cryptography https://conduition.io/cryptography/quantum-hbs/#disqus_thread https://conduition.io/code/mercury-disclosure/ https://conduition.io/code/mercury-disclosure/ Fri, 06 Sep 2024 00:00:00 GMT An examination of validation vulnerabilities in the Mercury Layer client libraries. code https://conduition.io/code/mercury-disclosure/#disqus_thread https://conduition.io/scriptless/multi-party-submarine-swaps/ https://conduition.io/scriptless/multi-party-submarine-swaps/ Fri, 12 Jul 2024 00:00:00 GMT Scaling submarine swaps into a cooperative multi-party protocol for better efficiency. scriptless https://conduition.io/scriptless/multi-party-submarine-swaps/#disqus_thread https://conduition.io/code/cassandra/ https://conduition.io/code/cassandra/ Sun, 02 Jun 2024 00:00:00 GMT API documentation for my automatic DLC oracle REST API. code https://conduition.io/code/cassandra/#disqus_thread https://conduition.io/cryptography/ecash-dlc/ https://conduition.io/cryptography/ecash-dlc/ Sun, 19 May 2024 00:00:00 GMT Settling Bitcoin smart contracts instantly off-chain using a Chaumian Ecash mint as a trusted blind intermediary. cryptography https://conduition.io/cryptography/ecash-dlc/#disqus_thread https://conduition.io/cryptography/frost-byok/ https://conduition.io/cryptography/frost-byok/ Wed, 14 Feb 2024 00:00:00 GMT FROST normally requires participants to generate random keys at setup time, but it turns out some participants can actually bring their own keys to the group. cryptography https://conduition.io/cryptography/frost-byok/#disqus_thread https://conduition.io/coding/ticketmaster/ https://conduition.io/coding/ticketmaster/ Sun, 04 Feb 2024 00:00:00 GMT "Screenshots won't get you in", but Chrome DevTools will. code https://conduition.io/coding/ticketmaster/#disqus_thread https://conduition.io/scriptless/ticketed-dlc/ https://conduition.io/scriptless/ticketed-dlc/ Thu, 04 Jan 2024 00:00:00 GMT How to participate in a Bitcoin DLC without any on-chain transactions. scriptless https://conduition.io/scriptless/ticketed-dlc/#disqus_thread https://conduition.io/bitcoin/inviscriptions/ https://conduition.io/bitcoin/inviscriptions/ Wed, 13 Dec 2023 00:00:00 GMT Why filtering spam Bitcoin transactions is doomed to fail. bitcoin https://conduition.io/bitcoin/inviscriptions/#disqus_thread https://conduition.io/scriptless/lottery/ https://conduition.io/scriptless/lottery/ Sun, 19 Nov 2023 00:00:00 GMT How to gamble Bitcoin fairly and transparently. scriptless https://conduition.io/scriptless/lottery/#disqus_thread https://conduition.io/code/musig2-crate/ https://conduition.io/code/musig2-crate/ Tue, 31 Oct 2023 00:00:00 GMT I got bored and wanted a more flexible MuSig library. code https://conduition.io/code/musig2-crate/#disqus_thread https://conduition.io/scriptless/adaptorsigs/ https://conduition.io/scriptless/adaptorsigs/ Fri, 08 Sep 2023 00:00:00 GMT A detailed description of the math behind Schnorr Adaptor Signatures. scriptless https://conduition.io/scriptless/adaptorsigs/#disqus_thread https://conduition.io/scriptless/keycommit/ https://conduition.io/scriptless/keycommit/ Fri, 08 Sep 2023 00:00:00 GMT How to make secret keys worth keeping secret. scriptless https://conduition.io/scriptless/keycommit/#disqus_thread https://conduition.io/cryptography/shamir-resharing/ https://conduition.io/cryptography/shamir-resharing/ Wed, 06 Sep 2023 00:00:00 GMT Change the structure of a Shamir Secret Sharing group using some fancy multi-party computation tricks. cryptography https://conduition.io/cryptography/shamir-resharing/#disqus_thread https://conduition.io/cryptography/shamir/ https://conduition.io/cryptography/shamir/ Mon, 04 Sep 2023 00:00:00 GMT Safely add new members to a Shamir Secret Sharing group. cryptography https://conduition.io/cryptography/shamir/#disqus_thread https://conduition.io/cryptography/wagner/ https://conduition.io/cryptography/wagner/ Sun, 13 Aug 2023 00:00:00 GMT An outlandish attack which broke the version version of the MuSig protocol. cryptography https://conduition.io/cryptography/wagner/#disqus_thread https://conduition.io/cryptography/musig/ https://conduition.io/cryptography/musig/ Thu, 29 Jun 2023 00:00:00 GMT How to cooperatively aggregate your Bitcoin signatures for fun and profit. cryptography https://conduition.io/cryptography/musig/#disqus_thread https://conduition.io/cryptography/schnorr/ https://conduition.io/cryptography/schnorr/ Fri, 23 Jun 2023 00:00:00 GMT Get up close and personal with Schnorr and his now patent-free linear signature algorithm. cryptography https://conduition.io/cryptography/schnorr/#disqus_thread https://conduition.io/cryptography/ecc-resources/ https://conduition.io/cryptography/ecc-resources/ Thu, 22 Jun 2023 00:00:00 GMT Learning and educational links for ECC. cryptography https://conduition.io/cryptography/ecc-resources/#disqus_thread