<html><head><meta http-equiv="Content-Type" content="text/html; charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">I would like to see this specifically for P2SH-PWPKH and/or native SegWit bech32 addresses.<div class=""><br class=""></div><div class="">Use cases I can think of are "I'm the whale in charge of these funds, listen to me" and some form of polling.</div><div class=""><br class=""></div><div class="">It's nice if funds aren't excluded from these type of functionalities just because they have a complicated redeem script. So something more generic like the Elements implementation / suggestion Greg Maxwell referred to in the Github thread would be nice too.</div><div class=""><br class=""></div><div class="">Is it also useful or possible to sign a message proving you are able to redeem some arbitrary branch in a MAST-like tree of scripts? What about being a minority part of a multisig?</div><div class=""><br class=""></div><div class="">All these features have privacy trade-offs, as well as perhaps security trade-offs, e.g. when you reveal a public key that was otherwise hidden behind a hash (i.e. if someone were to break secp256k1, they'd first organize a popular poll).<br class=""><div class=""><br class=""></div><div class="">There's no BIP for the current message signing mechanism either afaik.<br class=""><div class=""><br class=""></div><div class="">Sjors<br class=""><div><br class=""><blockquote type="cite" class=""><div class="">Op 8 dec. 2017, om 19:25 heeft Dan Bryant via bitcoin-dev <<a href="mailto:bitcoin-dev@lists.linuxfoundation.org" class="">bitcoin-dev@lists.linuxfoundation.org</a>> het volgende geschreven:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class="">I know there are posts, and an issue opened against it, but is there anyone writing a BIP for Sign / Verify message against a SegWit address?<div class=""><br class=""></div><div class="">I realize it is not a feature in wide use, but I think it still serves an important purpose, such as when proof of assets are requested.<br class=""><div class=""><br class=""></div><div class="">ref: <a href="https://github.com/bitcoin/bitcoin/issues/10542" class="">https://github.com/bitcoin/bitcoin/issues/10542</a></div></div><div class=""><br class=""></div></div>
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