j 7H÷Ô²ùØ2FKÆüRA/Å3Å^ g±6"è@»ä¾L¶The idea behind the "respend notification relay" is that merchants will simply monitor the network for a few seconds listening for double spends instead of waiting for confirmations.
https://whatsonchain.com/tx/8a95a84d2f8e0ca5ddd977defaebad9a07d00a32d7f56a41bf5ccf3631f3b97e