Re: [Bitcoin-development] [ann] Bitcoin Core version 0.9.2 has been released

[Jesus Cea]

On 17/06/14 11:46, Wladimir wrote:
> For Linux we now build against Qt 4.6, and filter the symbols for
> libstdc++ and glibc.
> This brings back compatibility with
> 
> - Debian 6+ / Tails
> - Ubuntu 10.04
> - CentOS 6.5

Under Ubuntu 10.04:

jcea@ubuntu:/tmp/bitcoin-0.9.2-linux/bin/64$ ./bitcoin-qt
./bitcoin-qt: symbol lookup error: ./bitcoin-qt: undefined symbol:
_ZN10QTextCodec11validCodecsEv

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Re: [Bitcoin-development] Chain pruning

[Jesus Cea]

On 11/04/14 00:15, Mark Friedenbach wrote:
> Checkpoints will go away, eventually.

Why?. The points in the forum thread seem pretty sensible.

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Re: [Bitcoin-development] Chain pruning

[Jesus Cea]

On 10/04/14 18:59, Pieter Wuille wrote:
> It's important to
> note that this is a strict reduction in security: we're now trusting
> that the longest chain (with most proof of work) commits to a valid
> UTXO set (at some point in the past).

AFAIK, current bitcoin code code already set blockchain checkpoints from
time to time. It is a garanteed that a longer chain starting before the
checkpoint is not going to be accepted suddently. See
.

Could be perfectly valid to store only unspend wallets before last
checkpoint, if during the blockchain download the node did all the checks.

Would be interesting, of course, to be able to verify "unspend wallet
accounting" having only that checkpoint data (the merkle tree can do
that, I guess). So you could detect a data corruption or manipulation in
your local harddisk.

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Re: [Bitcoin-development] Why are we bleeding nodes?

[Jesus Cea]

On 07/04/14 15:50, Gregory Maxwell wrote:
> Bitcoin.org recommends people away from running Bitcoin-QT now, so I'm
> not sure that we should generally find that trend surprising.

What options are out there for people caring about 20GB blockchain?
Depending of third party server is not an option.

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[Bitcoin-development] HEADS UP: Bitcoin 0.9.0 doesn't work on old Linux

[Jesus Cea]

I just upgraded to Bitcoin 0.9.0 and I got this:

"""
$ ./bitcoind
./bitcoind: /lib/libc.so.6: version `GLIBC_2.15' not found (required by
./bitcoind)
./bitcoind: /lib/libc.so.6: version `GLIBC_2.14' not found (required by
./bitcoind)

$ ./bitcoin-qt
./bitcoin-qt: /lib/libc.so.6: version `GLIBC_2.15' not found (required
by ./bitcoin-qt)
./bitcoin-qt: /lib/libc.so.6: version `GLIBC_2.14' not found (required
by ./bitcoin-qt)
"""

Sniff.

Red Hat Enterprise Linux uses glibc 2.12.

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Re: [Bitcoin-development] Bitcoin-Qt/bitcoind version 0.8.3 released

[Jesus Cea]

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On 25/06/13 19:57, Gavin Andresen wrote:
> Bitcoin-Qt version 0.8.3 is now available from: 
> http://sourceforge.net/projects/bitcoin/files/Bitcoin/bitcoin-0.8.3/

The
> 
"splash" banner shows "0.8.3-BETA".

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Re: [Bitcoin-development] minor bitcoin-qt gripes moving BTC off specific key

[Jesus Cea]

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On 07/05/13 14:16, Adam Back wrote:
> 3. a UX way to transfer BTC off a specific adress (eg choose from 
> address), rather than having to spend the entire wallet onto a new 
> address, just to get BTC off a specific address.  Doing it that way
> has problems: creates more network traffic/bigger packets, higher
> fees (if any transactions are young/low confirmation), and
> generally damages privacy as all your funds end up linked.

[...]

> Then I wanted to take the .01 BTC off the private key and the FAQs
> etc seem to suggest that the only way to do it is to spend our
> entire balance (from all keys) onto a new address.  Not exactly
> what I wanted, but I did it anyway and the tx fee goes up from
> .0001 which I set it to to .0005 because the transaction was young,
> to avoid network flooding.  Even though transaction I actually
> wanted to move (on the non self-controlled key had a big heap of
> confirmations and so could've been .0001 tx fee).

"sendfrom" in the RPC interface. Difficult to use (I would like to be
able to use source key, in addition of source "accounts") and easy to
make mistakes. But doable.

Would be nice to have an "advanced" GUI option to chooce source
account/key.

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[Bitcoin-development] Downloading blockchain

[Jesus Cea]

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I would like to download the entire blockchain by hand (kind of), but
I can't find software for it. The closest thing I found is
"Bitcoin-protocol-test-harness" code, but it is two years old and
seems not to work with current bitcoin network.

Python apreciated.

Thanks for your help.

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