Writz Protocol

BTCFi on Stellar

[Writz Protocol @WritzProtocol]

Bitcoin SPV inside a Soroban contract, in one picture.

The contract does not call a Bitcoin node.
The caller brings 6 headers, a Merkle proof, and the raw transaction.
The contract checks the math.

[Writz Protocol @WritzProtocol]

Most lending protocols publish your collateral, your debt, and how close you are to liquidation.

Should a DeFi position be a public billboard?

[Writz Protocol @WritzProtocol]

Babylon, Templar, and others are in this design space too.

We are not claiming the only honest design. We are claiming this one: script on Bitcoin, verifier on Soroban, USDC on Stellar.

[Writz Protocol @WritzProtocol]

Wrapped BTC is an IOU.

A good IOU is still an IOU. An issuer holds BTC and mints a token on another chain.

Writz is a script on Bitcoin and a verifier on Soroban. The collateral never becomes a token named BTC.

[Writz Protocol @WritzProtocol]

Phase 1 still has a protocol key. That is a real limitation.

The direction is less protocol key, not more. We write about that when there is code, not a promise.

[Writz Protocol @WritzProtocol]

How the BTC gets locked.

A P2WSH output on Bitcoin. Two paths out. Only two.

Path A: you and the protocol sign.
Path B: the timelock expires, you sign alone.

[Writz Protocol @WritzProtocol]

@jasonkarsh totally agreee ☑

[Writz Protocol @WritzProtocol]

The relayer is public on testnet: https://t.co/IttLJ1Br0s

Give it a txid. It returns the headers and the proof shaped for the call.

Docs: https://t.co/MExMCNjQrm

[Writz Protocol @WritzProtocol]

Bitcoin SPV inside a Soroban contract, in one picture.

The contract does not call a Bitcoin node.
The caller brings 6 headers, a Merkle proof, and the raw transaction.
The contract checks the math.

[Writz Protocol @WritzProtocol]

Your Bitcoin never leaves Bitcoin. Your loan, nobody sees.

Real BTC collateral, verified on-chain via SPV. Zero custodians. ZK-private positions.

Your keys. Your coins. Your loans.

[Writz Protocol @WritzProtocol]

@uselatchapp Let’s gooo, stay tuned! ⚡️

[Miguel Nieto @miguelnietoa_]

Proof of win 🥇

Had the privilege of pitching @WritzProtocol in Bogotá at Pulso Hackathon Colombia 🇨🇴 and we won 1st place!

This unlocked:
✈️ A trip to São Paulo for the Stellar Builder Summit
💰 Funding through Instawards program to keep building

Proud of this team ⚡️

[Writz Protocol @WritzProtocol]

We will post here the way we build: in public, technically, without a launch every week.

If you hold BTC and have never used it as collateral without handing it to someone, this is for you.

Questions in the replies. We read them.

[Writz Protocol @WritzProtocol]

Writz Protocol lets you lock real BTC from a Bitcoin wallet and borrow USDC on Stellar.

No bridge.
No custodian.
No wrapped token.

A short thread on what that means, what we have already shipped, and where to read the code.

[Writz Protocol @WritzProtocol]

What you can open today:

Site and testnet app: https://t.co/8vYAKfdUyS
Docs: https://t.co/MExMCNjQrm
Code (Apache-2.0): https://t.co/b6g6yFsOKt

Testnet. Not mainnet. We will say mainnet when mainnet is true.

[Writz Protocol @WritzProtocol]

This is where it started

5 July 2026. One video. No protocol account. The first time Writz existed on X.

Everything since then has been making that post true.

[Seb ☢︎⚡︎ 🔜 Meridian 🇵🇹 @salazarsebas_cr]

Writz Protocol ₿ 💰

BTCFi on Stellar 🔥

Lock real BTC directly from your Bitcoin wallet, borrow USDC on Stellar, and keep every position private - always.

- No bridge.
- No custodian.
- No wrapped tokens.
- No public balance sheet.

[Writz Protocol @WritzProtocol]

hello world