Swapping
Swapping requires 2 roles: The maker who initiates the swap and the taker who fills the open swap.
There are a few types of swap we can do.
- STAS for STAS where we swap one STAS token for another.
- P2PKH for STAS which is swapping BSV for STAS
- STAS for P2PKH swaps STAS for BSV
The swap transaction
The maker creates a partial transaction
Index
Input
Output
0
Maker offered UTXO
Maker wanted output
The offered UTXO is one the maker owns and the wanted output is a script that pays the maker.
The taker then completes the transaction adding the payment and change.
Index
Input
Output
0
Maker offered UTXO
Maker wanted output
1
Taker UTXO
Taker output
2
Funding UTXO
Change output
Steps
The swap can be done in 2 or 3 steps depending on the need to validate the taker UTXO. If the taker UTXO is a token then this token should be validated by the maker before he signs the transaction.
2 step swap
- 1.The maker creates a partial transaction and signs it using sighash single | anyone can pay. The partial transaction is then offered for completion.
- 2.The taker then adds his inputs and outputs and signs the transaction then submits it to the blockchain.
3 step swap
- 1.The maker creates a partial transaction and offers it for completion.
- 2.The taker then adds his inputs and outputs and signs the transaction then returns it to the maker.
- 3.The maker then signs the transaction and submits it to the blockchain.
Last modified 4mo ago
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