registry: add project details for Iwa

[solutionkanu12]

Adds name, one_liner, slug, category and team to the existing Iwa entry so the project has something to display on the hub. Only the Iwa entry is touched — 1 of 183 entries changed, 7 insertions, 0 deletions, no reordering or reformatting elsewhere.

Who I am

solutionkanu12 — Telegram solution_o1. Already registered; this only fills in the descriptive fields the original entry left blank.

What I am building

Iwa — private community savings circles (ajo/esusu/ROSCA) on Starknet.

A group agrees an amount and a turn order. Each round everyone contributes and one member collects the whole pot. Iwa runs that on chain with contributions settled privately through the STRK20 pool, so amounts and who paid stay hidden, while the accounting the group depends on — obligations, defaults, cure windows, payout order — stays verifiable.

Two contracts on mainnet:

• IwaCircle 0x01f81497b09aa702a38715c0ec149d7672cd557c0caea480714d4802ff6f81be — chain-neutral accounting. Holds no tokens. Members are Poseidon commitments, never addresses, so membership is unlinkable to any Starknet account.
• IwaStrk20Helper 0x04cac02dcc7ca8c46c0b6f32985f17bf24d99557222e60c6881d147e13fafbbb — the privacy_invoke adapter the pool calls. Immutable, wired once, no admin and no setter.

A contribution is one STRK20 transaction: withdraw the exact obligation to the helper, then invoke it, atomically. Members authorise settlement with Stark-curve signatures over domain-separated Poseidon hashes, verified on chain — the JS signer is locked to the deployed verifier by fixed vectors in the Cairo test suite.

Status

Live on mainnet with three verified pool transactions (shield, then two private contributions), recorded in strk20.json. Demo: https://iwa-psi.vercel.app

[github-actions]

Applied to main as 4c454bf - your project is on the hub within the half hour.

Closed rather than merged because the entry was rebuilt on top of everything else that landed while this was open. That is what stops registrations from deleting each other, and it means you never had to resolve a conflict. The commit is credited to you.