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September 23, 2023, 12:46:03 AM *
News: Latest Bitcoin Core release: 25.0 [Torrent]
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1  Economy / Service Discussion / Blockchain explorer that shows opt-in RBF transactions? on: November 29, 2015, 03:39:53 PM

So, opt-in RBF was merged. Does anyone know an explorer that shows it?
2  Bitcoin / Development & Technical Discussion / New transaction malleability attack wave? Another stresstest? on: October 01, 2015, 07:58:10 PM
Hey all,

we're seeing a lot of malleated transactions on our nodes. Anyone else?

Tx listed on are also all malleated (click on links, if marked as "conflicted" has seem two versions of the same* tx).

What's the point? Another stresstest?

* or close enough Smiley
3  Other / Meta / Forum governance? on: August 18, 2015, 12:56:24 PM

Could someone explain to me how the governance of this forum is handled?
Or, if this has been explained before in a complete manner, point me in the right direction?

4  Bitcoin / Wallet software / Best android wallet for a noob? on: June 17, 2015, 10:49:01 PM


I have a friend in Montreal without a wallet (real wallet, was stolen) who needs funds.
I offered to send her some bitcoins, but don't know which Android wallet would be best
to use. Best in this case = easy to use, low barrier of entry. Ideally I'd like to avoid
24-word passphrases, security backups and 2fa. Smiley

Any suggestions?
5  Bitcoin / Bitcoin Discussion / Bitcoin accounting in 2015 on: May 03, 2015, 11:47:17 AM

Hey Bitcoiners,

What do you use for accounting other than just an Excel sheet? Do any of the bigger accounting solutions support double-currency accounting with Bitcoin (for example, USD and BTC)?

I am looking for a better solution, preferably online/cloud-based. I checked Waveapps and Xero, but both don't support it yet.

Quickbooks has a "PayWithBitcoin" extension which is, AFAIK, just a BitPay payment and gets directly converted into base currency.

On the geeky side, there is support for multiple currencies and bitcoin in ledger-cli and partial support in GnuCash, it appears. Anyone using this?
6  Economy / Service Discussion / Service that lists wallets/address groups of known services? on: April 28, 2015, 08:32:20 PM

There is a service that lists wallets/address groups of known services (by clustering/chain analysis, I think).
I've seen it, but can't find it anymore.  Huh

Anyone can help me out here?
7  Bitcoin / Bitcoin Technical Support / Rescan on btcd and bitcoind gives a different set of unspents on: April 18, 2015, 06:00:36 PM
Currently testing Bitcoin Core Daemon version v0.10.0.0-g047a898 and btcwallet version 0.5.1-alpha.
Wallets have the same 14 addresses, freshly rescanned, no activity since.

$ bitcoin-cli listunspent|grep txid|wc -l
$ btcctl listunspent|grep txid|wc -l

So bitcoin core is missing 4 transactions. These are known to and have been confirmed since a long time (different blocks). Does this mean that bitcoin core has a bug here? Or am I missing something?
8  Bitcoin / Development & Technical Discussion / libbitcoin-server experiences? on: April 17, 2015, 10:19:09 PM


I just stumbled across libbitcoin-server. It's a major rewrite of Obelisk, the server component of libbitcoin. According to the devs, it's supposed to be very fast.

Information is sparse; the wiki is mostly empty and there are few references on the web.

Has anyone used this in anger already?
9  Bitcoin / Armory / Server usage via armoryd on: April 17, 2015, 07:16:49 PM

I am looking into using armory as a replacement for bitcoin core's wallet. I want to use it only server-side, that is, no gui etc.

armoryd looks exactly what I am looking for, but documentation is very sparse and it seems that few people are using it.

Anyone having experience with using it in production?
How fast/stable is it?

It doesn't seem very complete right now, as creating wallets and some other things require one to use the gui (which doesn't work obviously), so armoryd requires one to copy wallets around, which is nasty)
10  Alternate cryptocurrencies / Service Announcements (Altcoins) / XMR.TO - Pay the world using Monero on: February 18, 2015, 12:44:10 PM
XMR.TO - official support thread
Pay the world, using Monero.


We made this new service called XMR.TO. It allows you to pay any Bitcoin address using Monero.

Have a look at the website, it explains all the details:

We're still in beta, so there might be some glitches. In case of problems, don't hesitate to contact us or just reply here. Any feedback is welcome!

11  Bitcoin / Development & Technical Discussion / Interesting non-altcoin forks? on: February 07, 2015, 06:17:32 PM

one thing that bugs me about github is that it's quite hard to keep track of forks - there's no description to the fork itself, it appears. So if one would like to explore useful alternative trees, it's quite difficult to do so! (not talking altcoins here - pure bitcoin). For example, in Linux there are some known trees used for integrating new functionality or proposed drivers etc.

Is there an equivalent for bitcoin? For example, is there some sort of index for "best of github bitcoin forks"?
12  Economy / Service Discussion / What happened to Plugchain??? ('s bitcoin API) on: February 04, 2015, 10:05:44 AM announced "PlugChain" a while ago, a bitcoin data API similar to etc.

Here's the CoinDesk article:

Does anyone know what happened to it? seems to be offline since a while...
13  Economy / Web Wallets / List of Bitcoin blockchain APIs on: February 01, 2015, 11:46:07 AM

I am compiling a list of bitcoin APIs. Note that I am not interested in collecting block explorer web interfaces, but APIs for developers.

"Data" APIs


  • some sort  of HTTP API (eg, REST)
  • query the blockchain: blocks and transactions
  • p2p network: unconfirmed transactions, push transactions
  • query addresses: transactions, balances, unspents

(so basically everything one needs for building a web wallet)



  • Insight API (self hosted open-source, by BitPay) (Hosted versions exist, see below) [websockets]
  • Bitcore node (self hosted open-source using BitPay's "bitcore" API) (successor of Insight API) [websockets]


High-level wallet APIs

14  Bitcoin / Legal / Best EU country for a bitcoin startup? on: August 08, 2014, 08:04:23 PM

Which is at the moment the most advantageous EU country for a bitcoin startup?
Not sure, as I haven't been following the news lately.

UK for example seems to be very good on the legal side, but banks seem to
starve out all bitcoin-related business (that is rumor, though).
15  Economy / Computer hardware / [WTB] Small mechanical keyboard (~84 keys) on: July 29, 2014, 10:25:10 AM
I am looking for a small mechanical keyboard.
By "small" I mean keyboards with ~84 keys (smaller than TKL).
Want brown MX switches, but offer non-MX as well.
Some models I am interested in (but not limited to):

  • Noppoo Choc Mini 2013
  • Keycool

Caps, layout, colors: to be discussed.
16  Alternate cryptocurrencies / Altcoin Discussion / I'm interested in CryptoNote - which coin is best, and why? on: May 23, 2014, 11:39:02 AM
So, I'd like to look into CryptoNote-based coins.

What do you think, which one of Bytecoin, Monero, Fantomcoin and Quazarcoin is worth a look?

(To all the coinpumpers out there: if your coin is not in the list above, or you don't know what CryptoNote is, don't bother replying.)
17  Bitcoin / Bitcoin Discussion / Bitcoin accepted by ANTS! on: March 26, 2014, 08:54:25 AM

didn't know in which board to stick this, so here it goes:

We decided to accept Bitcoin for registration payments at our bi-annual scientific conference ANTS.

Here's a teaser video that we made:
( same robots as used in )

ANTS 2014
Ninth International Conference on Swarm Intelligence
September 10-12, 2014. Brussels, Belgium

ANTS 2014 will give researchers in swarm intelligence the
opportunity to meet, to present their latest research, and to
discuss current developments and applications.

In cooperation with the Belgian Bitcoin Association
18  Bitcoin / Bitcoin Discussion / Bitcoin network security counter? on: February 21, 2014, 11:14:07 AM

I am looking for this webpage that basically expresses the bitcoin network security in "dollars you'll need to run a 51% attack".

I've seen this page a while ago (I think it was setup by gavin) but I can't find it again.  Huh

Can someone help me out?
19  Bitcoin / Development & Technical Discussion / Transaction fee - size rounding on: November 18, 2013, 11:09:47 PM

the wiki [1] states regarding the transaction fees that:

Otherwise, the reference implementation will round up the transaction size to the nearest thousand bytes and then add a fee of 0.0001 BTC per thousand bytes.

Now, "to round up" and "to the nearest" are contradictory.  Huh Which one is it? [2] doesn't help either.

20  Bitcoin / Development & Technical Discussion / Bizarre failure on getrawtransaction rpc call on: November 17, 2013, 01:06:40 PM

from time to time, I am seeing a bizarre bug when processing transactions. I have a main loop that looks for new transactions. If it finds any, it gets the raw transaction from bitcoind and processes it. This works fine - so far, so good.

Unfortunately, from time to time, the call of getrawtransaction fails with the following error message:

{u'message': u'No information available about transaction', u'code': -5}

This happens quite rarely, but the weird thing is that it fails continuously for a few minutes, and only for one specific transaction. After a few minutes, it just automagically rights itself, and I manage to get the raw transaction and process it. Even more bizarrely, during the time that my code fails to retrieve the raw transaction, I can retrieve the raw transaction on the command line just fine!  Huh

I am running bitcoind 0.8.5 with txindex=1.

Any ideas where this might come from? Is this a bug in bitcoind?
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