be me: yesterday I found randomly a paper about 2 Circle STARK friendly hash functions working with Mersenne M31 (RPO-M31 and XHash-M31: Efficient Hash Functions for Circle STARKs by Tomer Ashur1 and Sundas Tariq) then i was: ohhh wow, looks interesting. then: write a rust implementation then start thinking: wait, maybe it could be a good candidate for a Circle STARK friendly AND Bitcoin Script friendly hash function then: start doing analysis and cost estimate then realise that they would NOT be practical to implement in Bitcoin Script... It's a pity for this but still it's very interesting hash functions, and the fact that they natively work with M31 is super promising. Maybe it's worth building a Cairo and Solidity implementation and benchmark the costs. They might be more interesting to use than Poseidon for Circle STARKs M31. Paper: https://eprint.iacr.org/2024/1635.pdf Rust repo:

GitHub

GitHub - AbdelStark/rpo-xhash-m31: RPO-M31 and XHash-M31: Efficient Hash Functions for Circle STARKs

RPO-M31 and XHash-M31: Efficient Hash Functions for Circle STARKs - AbdelStark/rpo-xhash-m31

Gm from Hong Kong Nostriches.

Bitcoiners in Hong Kong, register and come to our event on Monday. We will discuss covenants, Rollups, STARKs, Cashu, Lightning network and more.

比特币未来: 从OP_CAT到契约 Bitcoin Horizons: from OP_CAT to Covenants · Luma

Be in the Room Where It Happens The future of Bitcoin is being shaped right now. We’re bringing together the sharpest minds in the space to chall...

#BitcoinEvent #BitcoinConference #BitcoinDevsGathering

What can you do with Monero style ring signatures for Nostr ? You can build an Anonymous Voting platform using Nostr identities to vote. Thanks to the Back's Linkable Spontaneous Anonymous Group, you can detect double voting without leaking identities. Check Ringable demo 👇 A client-side anonymous voting platform using Nostr-compatible ring signatures. Ringable allows users to create proposals and vote anonymously as part of a predefined group (a "ring" of public keys). It leverages the cryptographic power of bLSAG ring signatures to ensure that while votes are verified as coming from a valid member of the ring, the specific voter's identity remains hidden. The cryptographic functions are powered by the Nostringer Rust library, compiled to WebAssembly (WASM) for use in the browser. Live demo:

Ringable

Ringable - Anonymous Voting

A client-side anonymous voting platform using ring signatures.

Ringable rep:

GitHub

GitHub - AbdelStark/ringable: Anonymous Voting platform using Nostringer ring signatures for Nostr keys.

Anonymous Voting platform using Nostringer ring signatures for Nostr keys. - AbdelStark/ringable

Nostringer:

GitHub

GitHub - AbdelStark/nostringer-rs: Ring signatures (SAG, BLSAG) for Nostr, written in Rust 🦀

Ring signatures (SAG, BLSAG) for Nostr, written in Rust 🦀 - AbdelStark/nostringer-rs

Introducing Nostringer - unlinkable ring signatures (SAG) for Nostr pubkeys. Instead of doing some Ghibli stuff I implemented a prototype of unlinkable ring signatures for Nostr. It's using Monero style Spontaneous Anonymous Group signatures (SAG). What does it enable ? Ring signatures allow multiple members of a group to sign a message without revealing which member actually signed it. I explored this after chatting with @Leo Wandersleb who wants to use this concept for WalletScrutiny. Basically his idea would be to let users write reviews as accredited wallet developers. Because of the competition between wallets it's better to not disclose who posted a review. It would be sufficient to know that it was posted from someone belonging to a group of accredited developers. Checkout the demo and repo in the links below. Live demo:

NostRinger

NostRinger - Anonymous Ring Signatures with Nostr Keys

Create and verify ring signatures using Nostr keys - a demonstration of anonymous cryptographic proofs.

Repo:

GitHub

GitHub - AbdelStark/nostringer: JavaScript library providing unlinkable ring signatures (SAG) for Nostr pubkeys.

JavaScript library providing unlinkable ring signatures (SAG) for Nostr pubkeys. - AbdelStark/nostringer

L402 is HTTP for payments, literally, and it's cool! Built a Rust implementation for an API paywalled with the L402 protocol, as well as a demo frontend. Try it yourself:

L402 Shield

L402 Shield - Lightning Payments on Bitcoin

A retro arcade-style demo of the L402 Lightning HTTP 402 Protocol for Bitcoin micropayments

Pay with Lightning and query the latest Bitcoin block. L402 protocol:

L402

L402 is an http-based payment flow for MCP, AI Agents, and more.

Rust L402 server repo:

GitHub

GitHub - AbdelStark/l402-server-example-rs: Example of an API paywalled with the L402 protocol, written in Rust.

Example of an API paywalled with the L402 protocol, written in Rust. - AbdelStark/l402-server-example-rs

L402 demo frontend using Nextjs repo:

GitHub

GitHub - AbdelStark/l402-shield: L402 demo webapp.

L402 demo webapp. Contribute to AbdelStark/l402-shield development by creating an account on GitHub.

#bitcoin #lightningnetwork #payment #mcp

I like the sound of freedom in the morning.

IT ALL COMES BACK TO BITCOIN. STARKNET IS EXPANDING TO BITCOIN, STARTING TODAY! THERE IS NO "IF" ANYMORE—IT’S HAPPENING, AND IT’S NOT CONDITIONAL ON OP_CAT OR ANY SOFT FORK. WE HAVE A PATH FOR OUR BITCOIN EXPANSION THAT IS NOT DEPENDENT ON ANY CHANGES TO BITCOIN. MULTISIG => BITVM => VALIDITY ROLLUP (IF / WHEN EFFICIENT STARK PROOF VERIFICATION BECOMES POSSIBLE). CHECK OUT MORE IN THE OFFICIAL ANNOUNCEMENTS: PARTNERSHIPS WITH BITCOIN ECOSYSTEM PLAYERS, STARKWARE ESTABLISHING A STRATEGIC BITCOIN RESERVE, THE BTCFI SEASON PROGRAM, AND MORE. I AM BEYOND EXCITED ABOUT THIS EXPANSION. FREEDOM TECH IS THE MOST IMPORTANT BATTLE OF OUR GENERATION. BITCOIN IS THE REPRESENTATION OF THIS FIGHT. IT IS THE HOPE TO BUILD A BETTER WORLD BY FIXING THE ASYMMETRY OF POWER. WE MUST RESTORE SOVEREIGNTY TO INDIVIDUALS. IT ALL COMES BACK TO BITCOIN. FIX THE MONEY, FIX THE WORLD!

Starknet on Bitcoin and Ethereum: The first L2 to unify both chains

Starknet will become Bitcoin’s execution layer, massively scaling Bitcoin and opening the door to complex Bitcoin applications.

"The illusion of freedom will continue as long as it's profitable to maintain the illusion." – Frank Zappa Bitcoin removes the illusion, giving people true financial sovereignty. The tools exist. The code is ready. Freedom is inevitable.

Yo, another public good library built by StarkWare exploration team: a Merkle-Sum Sparse Merkle Tree library, written in Rust. 96% test coverage. Working next on full compatibility with the Go implementation of Taproot Assets from Lightning Labs. @calle here you go, you know what can be done with this! A Proof of Liabilities Scheme for Ecash Mints!

GitHub

GitHub - starkware-bitcoin/mssmt-rs: Merkle-Sum Sparse Merkle Tree (MS-SMT) in Rust

Merkle-Sum Sparse Merkle Tree (MS-SMT) in Rust. Contribute to starkware-bitcoin/mssmt-rs development by creating an account on GitHub.

POL design by Calle:

Gist

ecash-pol.md

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