From: ZmnSCPxj <ZmnSCPxj@protonmail•com>
To: Mike Brooks <m@ib•tc>,
Bitcoin Protocol Discussion
<bitcoin-dev@lists•linuxfoundation.org>
Subject: Re: [bitcoin-dev] Smaller Transactions with PubRef
Date: Sun, 02 Aug 2020 00:36:08 +0000 [thread overview]
Message-ID: <1cxOISncF4dES_Ijm5FJUhwUAzBupnLPiv3qnU20as76zMMhVyggkg1hphq4ehuqEFK_H88TBbfI2pKbLWzzx7E6kOUXeC-yOcfrOkg3uAY=@protonmail.com> (raw)
In-Reply-To: <CALFqKjTDcsD4xpc-TryTRCNnCJivyqkU9dv0ff2emP5kxZF1bA@mail.gmail.com>
Good morning Mike,
Hard NAK.
The responses to the original posting already pointed out important problems with this:
* Encourages address reuse, hurting fungibility and privacy.
* Prevents pruning, since access to previous blocks must always be available in order to validate.
* Optimized implementation requires creating yet another index to previous block data, increasing requirements on fullnodes.
* Requires SCRIPT to be re-evaluated on transactions arriving in newblocks, to protect against reorgs of the chaintip, and in particular `OP_PUBREF` references to near the chaintip.
None of these issues have been addressed in your current proposal.
The proposal looks at clients only, without considering what validators have to implement in order to validate new blocks with this opcode.
Regards,
ZmnSCPxj
next prev parent reply other threads:[~2020-08-02 0:36 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-01 5:09 Mike Brooks
2020-08-02 0:36 ` ZmnSCPxj [this message]
2020-08-02 1:12 ` Mike Brooks
2020-08-02 14:22 ` ZmnSCPxj
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