The problem with v4 hook tokens is that anyone can open a second pool for the same token without the hook, and traders and aggregators will happily route through whichever one is cheaper, so the fee that’s meant to pay holders and fund buybacks just never gets charged. On Robinhood Chain alone, five v4 hook tokens have traded around $2B and less than 20% of it went through their official pools. Their hooks have collected around $3.4M when everything going through them could have brought in closer to $20M, and AI by itself missed out on nearly $8M. Say you hold a token that pays you in stock tokens just for holding it. If it’s paid you $100 so far, you could have been paid closer to $570 had every trade gone through the hook, and the same gap runs through every buyback these fees were meant to fund. URC-5, which @standard_rsv just got merged into the URC repo over at @Uniswap, lets a token publish which pools are its official ones so routers know where to send trades, and gives new tokens the option to block trading anywhere else. It works on any chain Uniswap v4 runs on, so this goes well beyond Robinhood Chain. What’s also interesting is that Uniswap has continued to support Standard Reserve since before launch, from helping with the audit to getting the token unflagged on day one, and now they’ve added one of its proposals into their own repo. I can't wait to see what comes from this relationship next.