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From: Tom Zander <tomz@freedommail.ch>
To: bitcoin-dev@lists.linuxfoundation.org,
David Vorick <david.vorick@gmail.com>
Date: Tue, 18 Apr 2017 12:50:31 +0200
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Subject: Re: [bitcoin-dev] Small Nodes: A Better Alternative to Pruned Nodes
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On Monday, 17 April 2017 08:54:49 CEST David Vorick via bitcoin-dev wrote:
> The best alternative today to storing the full blockchain is to run a
> pruned node
The idea looks a little overly complex to me.
I suggested something similar which is a much simpler version;
https://zander.github.io/scaling/Pruning/
> # Random pruning mode
>
> There is a large gap between the two current modes of everything
> (currently 75GB) and only what we need (2GB or so).
>
> This mode would have two areas, it would keep a days worth of blocks to
> make sure that any reorgs etc would not cause a re-download, but it would
> have additionally have an area that can be used to store historical data
> to be shared on the network. Maybe 20 or 50GB.
>
> One main feature of Bitcoin is that we have massive replication. Each node
> currently holds all the same data that every other node holds. But this
> doesn't have to be the case with pruned nodes. A node itself has no need
> for historic data at all.
>
> The suggestion is that a node stores a random set of blocks. Dropping
> random blocks as the node runs out of disk-space. Additionally, we would
> introduce a new way to download blocks from other nodes which allows the
> node to say it doesn't actually have the block requested.
>
> The effect of this setup is that many different nodes together end up
> having the total amount of blocks, even though each node only has a
> fraction of the total amount.
--
Tom Zander
Blog: https://zander.github.io
Vlog: https://vimeo.com/channels/tomscryptochannel
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