{"type":"rich","version":"1.0","title":"Rusty Russell wrote","author_name":"Rusty Russell (npub179…elz4s)","author_url":"https://yabu.me/npub179e9tp4yqtqx4myp35283fz64gxuzmr6n3yxnktux5pnd5t03eps0elz4s","provider_name":"njump","provider_url":"https://yabu.me","html":"The idea of an activation challenge is interesting. But my preferred form would be an on-chain reward. A tx which uses its first input's txid to generate the puzzle NUMS, so you can't just copy it. Not sure how to generate such a challenge, maybe GSR, OP_TX plus cleverness... \n\nThis would start a month-long (4032 block) countdown to disabling vulnerable spend paths, as a final shot across the bow. "}