Cosine: Maliciously stuck inscription transactions are possible with low transaction fees

X platform user @BTW0205 posted a message stating that there is a malicious behavior: "The buyer initiated an ultra-low Gas transaction to purchase the inscription, making it impossible to complete the transaction in the short term. After the price rose, the transaction was accelerated, and after the price fell, the transaction was canceled." In this regard, Cosine issued an article on the X platform stating that due to the PSBT signature mechanism used by the trading platform, the transaction can indeed be maliciously occupied for a certain period of time. You can use RBF to accelerate the success of the transaction, but will not accelerate the cancellation of the transaction (the cancellation is actually the low-fee transaction before the success, but in theory there will eventually be a successful transaction as agreed by the seller's PSBT).