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wakgill
62 lines
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62 lines
1.9 KiB
Markdown
---
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layout: default
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title: 'Re: [bitcoin-list] Bitcoin v0.1.5 released'
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grand_parent: Emails
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parent: '[bitcoin-list]'
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nav_order: 9
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date: 2009-03-04 16:59:12 UTC
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source: https://satoshi.nakamotoinstitute.org/emails/bitcoin-list/27/
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---
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# Re: [bitcoin-list] Bitcoin v0.1.5 released
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Satoshi discusses using Bitcoin to timestamp files.
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{: .fs-6 .fw-300 }
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---
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```
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Hal Finney wrote:
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> That sounds good. I'd also like to be able to run multiple coin/block
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> generators on multiple machines, all behind a single NAT address. I
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> haven't tried this yet so I don't know if it works on the current
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> software.
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The current version will work fine. They'll each connect over the
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Internet, while incoming connections only come to the host that
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port 8333 is routed to.
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As an optimisation, I'll make a switch "-connect=1.2.3.4" to make
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it only connect to a specific address. You could make your extra
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nodes connect to your primary, and only the primary connects over
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the Internet. It doesn't really matter for now, since the network
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would have to get huge before the bandwidth is anything more than
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trivial.
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> BTW I don't remember if we talked about this, but the other day some
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> people were mentioning secure timestamping. You want to be able to
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> prove that a certain document existed at a certain time in the past.
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> Seems to me that bitcoin's stack of blocks would be perfect for this.
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Indeed, Bitcoin is a distributed secure timestamp server for
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transactions. A few lines of code could create a transaction with
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an extra hash in it of anything that needs to be timestamped.
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I should add a command to timestamp a file that way.
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> > > Later I want to add interfaces to make it really easy to integrate
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> > > into websites from any server side language.
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>
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> Right, and I'd like to see more of a library interface that could be
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> called from programming or scripting languages, on the client side as
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> well.
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Exactly.
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Satoshi Nakamoto
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http://www.bitcoin.org
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```
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