From: ZmnSCPxj <ZmnSCPxj@protonmail•com>
To: Mike Brooks <m@ib•tc>
Cc: bitcoin-dev <bitcoin-dev@lists•linuxfoundation.org>
Subject: Re: [bitcoin-dev] PubRef - Script OP Code For Public Data References
Date: Mon, 29 Jul 2019 03:39:15 +0000 [thread overview]
Message-ID: <E5wDa72WwYR4yBace7fEiptoIXt0wqitKoL-OP5NMh519Zp6nXGJEV2IxSgGTyeqcHyoQmFJC1O65_P63n_LRoBSEjQb9QhhnCdQNoB3L0I=@protonmail.com> (raw)
In-Reply-To: <CALFqKjT=6aYGqTkzqcf2c5dwApPDTTVGuyGt=Vxi6Ms43m-4nQ@mail.gmail.com>
Good morning Mike,
> > The problem with transaction being pruned is that the data in them might now be used in a *future* `OP_PUBREF`.
>
> I can see how pruning is needed for scalability, and pruning can be made compatible with a reference to a transaction. If a transaction is pruned, then the key material used in a prune'ed block's PUSHDATA operations are of no value. A user of the network shouldn't need to make this kind of PUBREF, and if a user did want to bring a wallet back from the dead - then the utility of PUBREF wouldn't be available to them.
I believe you misunderstand the point completely.
Currently Bitcoin Core has a mode, called pruning, where:
1. It validates ***all*** transactions.
2. It throws away the transaction data of a block ***after*** validation.
3. It keeps only the UTXO set of ***all*** addresses, not just a specific wallet.
Given the above, if a transaction block 1000 `OP_PUBREF`s to a `OP_PUSHDATA` in block 100, how does the pruned validator get access to this data (Which was pruned after the pruned validator handled block 100)?
Note that pruned nodes ***are*** fullnodes and validate all transactions, not just those that involve their wallet.
Regards,
ZmnSCPxj
prev parent reply other threads:[~2019-07-29 3:39 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-19 6:05 Mike Brooks
2019-07-19 15:17 ` William Casarin
2019-07-19 19:17 ` Pieter Wuille
2019-07-19 17:45 ` Yuval Kogman
[not found] ` <CALFqKjTHT7XaREK7ewwKKBjrZcty7ueNBMtSLEW7B-o9uwXgmw@mail.gmail.com>
2019-07-19 22:48 ` Yuval Kogman
2019-07-24 19:49 ` Mike Brooks
2019-07-19 18:07 ` ZmnSCPxj
2019-07-27 20:03 ` Mike Brooks
2019-07-29 1:46 ` ZmnSCPxj
2019-07-29 2:19 ` Mike Brooks
2019-07-29 2:49 ` ZmnSCPxj
2019-07-29 3:07 ` Mike Brooks
2019-07-29 3:39 ` ZmnSCPxj [this message]
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