# A One Way Bridge

Source: https://geohot.github.io/blog/jekyll/update/2024/11/17/a-one-way-bridge.html
Kiwi News: https://news.kiwistand.com/stories/A-One-Way-Bridge?index=0x673bf30066a52c8166b58b46e41825fcfcb18fd491a3644be14cd32efcd8ae54453a176b
Submitted by sileo.eth on 2024-11-19 UTC, 4 upvotes, 4 comments

Okay I went to Devcon. And while there I had a great idea that the crypto space really needs. It seems like while AI infrastructure has improved by leaps and bounds in the last 5 years, crypto infra has actually gotten worse. I’m proposing some great new infrastructure that the crypto space deserves.

We still don’t have a good decentralized bridge between Bitcoin and Ethereum, and with the rising price of Bitcoin this is more important than ever. I have some experience building bridges, so I’m proposing one. However, unlike most bridges, this is a one way bridge. It works like this:

Send Bitcoin to 3bridgebridgebridgebridgebridge

Wait for several block confirmations

Prove inclusion of your send in the Bitcoin chain to the bridge

Receive BBTC (Bridged BTC) tokens on Ethereum of the amount sent

I’ll note, nobody has the private key to 3bridgebridgebridgebridgebridge, so there is no way to recover your original Bitcoin. That’s okay, they have been safely bridged to Ethereum and you have received your BBTC token.

If you’d just like to buy exposure to Bitcoin on Ethereum without using the bridge, you can buy the BBTC token on any DEX.

Is it really that simple? Answer: yes, but only if people believe it is.

You can’t really believe the BBTC token is worth 0, can you?

## Comments

**sileo.eth**: I had the occasion to talk briefly with George Hotz at Devcon, I actually understood smart contracts thanks to one of his streams. He told me "sorry about that", as well as  "this space is full of clowns". I wonder what exactly he was doing there and would've loved to hear more honest criticism from him.

**tim**: What? George Hotz was at Devcon?

**tim**: Regarding this idea, a friend actually built this in the DeFi summer but it ended up collapsing and two way bridges became a standard

**sileo.eth**: Yes he was there on the last day only (I think) and presumably to meet his girlfriend. 
For the one-way bridge, I don't understand how the "proof of inclusion" part would be achieved trustlessly