OpenOrdex is an open source zero-fee trustless Bitcoin NFT marketplace based on partially signed bitcoin transactions
The seller creates a partially signed bitcoin transaction (PSBT) specifying the price of the ordinal.
The buyer can then sign the PSBT and broadcast it to the network.
All inscriptions can be viewed directly via their inscription number or ID.
In addition, the homepage features collections in a random order.
The collection data is taken from the ordinal-collections repo.
In order to have your collection listed, create a pull request on the ordinal-collections repo.
Build docker image
$ docker build -t openordex .
Run Openordex with docker
$ docker run -it -d -p 8080:80 openordex
All Initial Asks are Submited as PSBTs with:
| Inputs | Outputs | ||
|---|---|---|---|
| From maker > | Inscription | Ask | > To Maker |
Signed and submitted to the order book by the maker
The taker finalizes the PSBT based on available UTXOs and fee market conditions:
| Inputs | Outputs | ||
|---|---|---|---|
| From Taker > | Payment* | Change* | > To Taker |
| From Maker > | Inscription | Ask | > To Maker |
| From Taker > | Additional** | Inscription | > To Taker |
| Change** | > To Taker |
*There may be multiple UTXOs used for Payment. There must be an equal number of Change outputs (to enforce index match requirements of sighashsingle) **There may be multiple Additional, they will be used to pay for fees or add additional padding to Output: Inscription in cases where the output would drop below 2k sats (due to fees)
The inscribed sat will remain at a sat index below the dust limit (546), and the inscription output will never be less than 2k sats.