Recent Questions – Bitcoin Stack Exchange

Recent Questions – Bitcoin Stack Exchange






Recent Questions – Bitcoin Stack Exchange https://bitcoin.stackexchange.com/feeds?format=xml
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Recent Questions – Bitcoin Stack Exchange
https://bitcoin.stackexchange.com/feeds?format=xml
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<subtitle>most recent 30 from bitcoin.stackexchange.com</subtitle>
<updated>2021-03-31T19:05:58Z</updated>
<id>https://bitcoin.stackexchange.com/feeds?format=xml</id>
<license>https://creativecommons.org/licenses/by-sa/4.0/rdf</license>
<entry>
<id>https://bitcoin.stackexchange.com/q/105041</id>
<rank scheme=”https://bitcoin.stackexchange.com”>0</rank>
<title type=”text”>If the computer that stores the bitcoin is destroyed, how does someone access their bitcoin?</title>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”blockchain”></category>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”wallet”></category>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”storage”></category>
<author>
<name>Boone</name>
<uri>https://bitcoin.stackexchange.com/users/119001</uri>
</author>
<link rel=”alternate” href=”https://bitcoin.stackexchange.com/questions/105041/if-the-computer-that-stores-the-bitcoin-is-destroyed-how-does-someone-access-th”>
<published>2021-03-31T18:23:45Z</published>
<updated>2021-03-31T18:52:03Z</updated>
<summary type=”html”>
&lt;p&gt;I have seen people say that you just need the private key and &amp;quot;some software&amp;quot; to recover your bitcoin. What does this actually mean in the real world? Can someone give an example?
Also, if you are using some company’s wallet to store the bitcoin, you are relying on that company’s computer for storage. How would you get the bitcoin to be stored on your own computer?
I am sorry if these are poor questions; I am finding it difficult to wrap my head around the actual storage of bitcoin.&lt;/p&gt;

</summary>
</entry>
<entry>
<id>https://bitcoin.stackexchange.com/q/105038</id>
<rank scheme=”https://bitcoin.stackexchange.com”>0</rank>
<title type=”text”>How many hops does Coinbase and other exchanges track your movement of BTC when it leaves their exchanges?</title>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”security”></category>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”exchanges”></category>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”privacy”></category>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”coinbase.com”></category>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”fungibility”></category>
<author>
<name>Patoshi パトシ</name>
<uri>https://bitcoin.stackexchange.com/users/3029</uri>
</author>
<link rel=”alternate” href=”https://bitcoin.stackexchange.com/questions/105038/how-many-hops-does-coinbase-and-other-exchanges-track-your-movement-of-btc-when”>
<published>2021-03-31T16:16:23Z</published>
<updated>2021-03-31T16:16:23Z</updated>
<summary type=”html”>
&lt;p&gt;I’ve read reports of Coinbase users getting an email stating that they detected their Bitcoins being moved to an unapproved exchange or site after removing their bitcoins off of the exchange. What is a safe way to move your Bitcoins without nosey exchanges seeing where its going? How many hops does coinbase and other exchanges check before sending you an email that you are &amp;quot;being watched&amp;quot;.&lt;/p&gt;

</summary>
</entry>
<entry>
<id>https://bitcoin.stackexchange.com/q/105037</id>
<rank scheme=”https://bitcoin.stackexchange.com”>1</rank>
<title type=”text”>What is a correct extranonce2 value in the stratum protocol?</title>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”mining-pools”></category>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”client”></category>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”development”></category>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”stratum”></category>
<author>
<name>AhmadBenos</name>
<uri>https://bitcoin.stackexchange.com/users/118981</uri>
</author>
<link rel=”alternate” href=”https://bitcoin.stackexchange.com/questions/105037/what-is-a-correct-extranonce2-value-in-the-stratum-protocol”>
<published>2021-03-31T15:22:49Z</published>
<updated>2021-03-31T15:22:49Z</updated>
<summary type=”html”>
&lt;p&gt;I’m developing a stratum mining client. I read on &lt;a href=”https://braiins.com/stratum-v1/docs” rel=”nofollow noreferrer”&gt;stratum v1 docs on braiins.com&lt;/a&gt; how mining work is done on the stratum protocol and that the coinbase is done by concatenating coinb1+extranonce1+extranonce2+coinb2. At the end, mining work is submitted by sending this JSON: &lt;code&gt;&lt;/code&gt;.&lt;/p&gt;
&lt;p&gt;It says that the extranonce2 value is generated by the miner but must be based on the extranonce2 size provided by the pool. The extranonce2_size im getting from the pool is: 4 (4 bytes). So an extranonce2 value of 00000001(in hex) can be valid.&lt;/p&gt;
&lt;p&gt;&lt;strong&gt;However&lt;/strong&gt;, when i’m trying to submit a random miner work to the pool(just testing) by throwing in random nonce and extraonce2 size(but of course using the current jobId and ntime provided by the response i got from the pool) i keep getting this error response: &lt;code&gt;20,incorrect size of extranonce2&lt;/code&gt;.&lt;/p&gt;
&lt;p&gt;The random extranonce2 i’m sending is ‘00000002’ and random nonce is ‘b2957c02’. Shouldn’t i get a rejected share and not an incorrect extranonce2 size? I’m still new to this and don’t yet understand exactly how everything works so where’s my mistake here? or is it a pool problem? I know there’s a lot of stuff to do before sending the miner work but here i’m trying to send a random miner work here.&lt;/p&gt;
&lt;p&gt;btw is the request id always 4 in stratum for submitting work(or id: ‘mining.submit’)?&lt;/p&gt;
&lt;p&gt;I’m authorizing the miner before submitting.&lt;/p&gt;

</summary>
</entry>
<entry>
<id>https://bitcoin.stackexchange.com/q/105036</id>
<rank scheme=”https://bitcoin.stackexchange.com”>0</rank>
<title type=”text”>Error compile bitcoin mac OS</title>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”bitcoin-core”></category>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”wallet”></category>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”mac”></category>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”bitcoin-qt-setup”></category>
<author>
<name>dam yi</name>
<uri>https://bitcoin.stackexchange.com/users/117700</uri>
</author>
<link rel=”alternate” href=”https://bitcoin.stackexchange.com/questions/105036/error-compile-bitcoin-mac-os”>
<published>2021-03-31T14:57:59Z</published>
<updated>2021-03-31T14:57:59Z</updated>
<summary type=”html”>
&lt;p&gt;I have straggle to compile bitcoin core on mac OS machine. it has an error as the following:&lt;/p&gt;
&lt;pre&gt;&lt;code&gt;/usr/local/include/QtCore/qglobal.h:667:65: error: expected ‘&amp;gt;’
typename = std::enable_if_t&amp;lt;std::is_arithmetic_v&amp;lt;T&amp;gt; &amp;amp;&amp;amp; std::is_arithmetic_v&amp;lt;U&amp;gt; &amp;amp;&amp;amp;
^
/usr/local/include/QtCore/qglobal.h:667:65: error: expected ‘,’ or ‘&amp;gt;’ in
template-parameter-list
/usr/local/include/QtCore/qglobal.h:668:66: error: expected unqualified-id
std::is_floating_point_v&amp;lt;T&amp;gt; == std::is_floating_po…
^
/usr/local/include/QtCore/qglobal.h:679:35: error: no type named ‘Promoted’ in namespace
‘QTypeTraits::detail’
using Promoted = typename detail::Promoted&amp;lt;T, U&amp;gt;::type;
~~~~~~~~~~~~~~~~~^~~~~~~~
/usr/local/include/QtCore/qglobal.h:679:43: error: expected ‘;’ after alias declaration
using Promoted = typename detail::Promoted&amp;lt;T, U&amp;gt;::type;
^
;
/usr/local/include/QtCore/qglobal.h:691:31: error: no template named ‘Promoted’ in namespace
‘QTypeTraits’
constexpr inline QTypeTraits::Promoted&amp;lt;T, U&amp;gt; qMin(const T &amp;amp;a, const U &amp;amp;b)
~~~~~~~~~~~~~^
/usr/local/include/QtCore/qglobal.h:693:28: error: no template named ‘Promoted’ in namespace
‘QTypeTraits’
using P = QTypeTraits::Promoted&amp;lt;T, U&amp;gt;;
~~~~~~~~~~~~~^
/usr/local/include/QtCore/qglobal.h:694:5: error: unknown type name ‘P’
P _a = a;
^
/usr/local/include/QtCore/qglobal.h:695:5: error: unknown type name ‘P’
P _b = b;
^
/usr/local/include/QtCore/qglobal.h:699:31: error: no template named ‘Promoted’ in namespace
‘QTypeTraits’
constexpr inline QTypeTraits::Promoted&amp;lt;T, U&amp;gt; qMax(const T &amp;amp;a, const U &amp;amp;b)
~~~~~~~~~~~~~^
/usr/local/include/QtCore/qglobal.h:701:28: error: no template named ‘Promoted’ in namespace
‘QTypeTraits’
using P = QTypeTraits::Promoted&amp;lt;T, U&amp;gt;;
~~~~~~~~~~~~~^
/usr/local/include/QtCore/qglobal.h:702:5: error: unknown type name ‘P’
P _a = a;
^
/usr/local/include/QtCore/qglobal.h:703:5: error: unknown type name ‘P’
P _b = b;
^
/usr/local/include/QtCore/qglobal.h:707:31: error: no template named ‘Promoted’ in namespace
‘QTypeTraits’
constexpr inline QTypeTraits::Promoted&amp;lt;T, U&amp;gt; qBound(const T &amp;amp;min, const U &amp;amp;val, const T &amp;amp;max)
~~~~~~~~~~~~~^
/usr/local/include/QtCore/qglobal.h:710:31: error: no template named ‘Promoted’ in namespace
‘QTypeTraits’
constexpr inline QTypeTraits::Promoted&amp;lt;T, U&amp;gt; qBound(const T &amp;amp;min, const T &amp;amp;val, const U &amp;amp;max)
~~~~~~~~~~~~~^
/usr/local/include/QtCore/qglobal.h:713:31: error: no template named ‘Promoted’ in namespace
‘QTypeTraits’
constexpr inline QTypeTraits::Promoted&amp;lt;T, U&amp;gt; qBound(const U &amp;amp;min, const T &amp;amp;val, const T &amp;amp;max)
&lt;/code&gt;&lt;/pre&gt;
&lt;p&gt;Please advise.&lt;/p&gt;

</summary>
</entry>
<entry>
<id>https://bitcoin.stackexchange.com/q/105035</id>
<rank scheme=”https://bitcoin.stackexchange.com”>0</rank>
<title type=”text”>Connecting Ledger Nano X wallet to my Bitcoin node</title>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”bitcoin-core”></category>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”json-rpc”></category>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”full-node”></category>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”ledger-hardware-wallet”></category>
<author>
<name>Pishi</name>
<uri>https://bitcoin.stackexchange.com/users/113838</uri>
</author>
<link rel=”alternate” href=”https://bitcoin.stackexchange.com/questions/105035/connecting-ledger-nano-x-wallet-to-my-bitcoin-node”>
<published>2021-03-31T14:57:08Z</published>
<updated>2021-03-31T14:57:08Z</updated>
<summary type=”html”>
&lt;p&gt;I’ve been trying to connect my Ledger nano x to my bitcoin full node following this &lt;a href=”https://support.ledger.com/hc/en-us/articles/360017551659-Setting-up-your-Bitcoin-full-node” rel=”nofollow noreferrer”&gt;instructions&lt;/a&gt; by Ledger. I have configured the bitcoin.conf file as follows:&lt;/p&gt;
&lt;pre&gt;&lt;code&gt;prune=0
txindex=1
server=1
daemon=1
maxconnections=35
rpcallowip= &amp;lt;local IP or public IP?&amp;gt;
rpcuser=letsbegin
rpcpassword=***********
rpcport=8332
rpcclienttimeout=60
&lt;/code&gt;&lt;/pre&gt;
&lt;p&gt;The computer that I run the Ledger app is in the same network as my full BTC node (not the same computer). The problem is that the ledger app can’t reach to my node? I tried both the local IP of the computer that’s requesting the RPC and also its public IP but no luck so far. This node has up and running for two years now. I can see it in bitcodes.io I’ll appreciate if anyone could advise me on this?&lt;/p&gt;

</summary>
</entry>
<entry>
<id>https://bitcoin.stackexchange.com/q/105033</id>
<rank scheme=”https://bitcoin.stackexchange.com”>2</rank>
<title type=”text”>Is it okay to chain multiple unconfirmed transactions?</title>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”unconfirmed-transactions”></category>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”child-pays-for-parent”></category>
<author>
<name>andre bianchessi</name>
<uri>https://bitcoin.stackexchange.com/users/118989</uri>
</author>
<link rel=”alternate” href=”https://bitcoin.stackexchange.com/questions/105033/is-it-okay-to-chain-multiple-unconfirmed-transactions”>
<published>2021-03-31T14:12:04Z</published>
<updated>2021-03-31T15:46:37Z</updated>
<summary type=”html”>
&lt;p&gt;Is it okay to chain and broadcast multiple unconfirmed transactions?&lt;br /&gt;
For example: I have two confirmed UTXOs &lt;code&gt;UC1&lt;/code&gt; and &lt;code&gt;UC2&lt;/code&gt;. Using both as inputs, I then create and broadcast transaction &lt;code&gt;T1&lt;/code&gt;, which outputs &lt;code&gt;UT1&lt;/code&gt;. Then, using &lt;code&gt;UT1&lt;/code&gt; and another confirmed UTXO, &lt;code&gt;UC3&lt;/code&gt;, I create and broadcast &lt;code&gt;T2&lt;/code&gt;, which outputs &lt;code&gt;UT2&lt;/code&gt;. I keep track of the last unconfirmed UTXO from the transactions I built and keep building and broadcasting new ones.&lt;/p&gt;
&lt;p&gt;Secondly, will the chained transactions be mined at the same block?&lt;/p&gt;

</summary>
</entry>
<entry>
<id>https://bitcoin.stackexchange.com/q/105032</id>
<rank scheme=”https://bitcoin.stackexchange.com”>0</rank>
<title type=”text”>TransactionId Not working Second Time in NBitcoin and QBitNinja?</title>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”bitcoind”></category>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”nbitcoin”></category>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”qbitninja”></category>
<author>
<name>Yogesh Gautam</name>
<uri>https://bitcoin.stackexchange.com/users/117777</uri>
</author>
<link rel=”alternate” href=”https://bitcoin.stackexchange.com/questions/105032/transactionid-not-working-second-time-in-nbitcoin-and-qbitninja”>
<published>2021-03-31T13:22:09Z</published>
<updated>2021-03-31T13:22:09Z</updated>
<summary type=”html”>
&lt;p&gt;I am trying to send bitcon from my address to another address. i had 0.0024BTC in my wallet and then i performed a transfer using this article:
&lt;a href=”https://programmingblockchain.gitbook.io/programmingblockchain/bitcoin_transfer/spend_your_coin#sign-your-transaction” rel=”nofollow noreferrer”&gt;https://programmingblockchain.gitbook.io/programmingblockchain/bitcoin_transfer/spend_your_coin#sign-your-transaction&lt;/a&gt;
The Transfer was success. I was happy. Now i again tried to perform another transaction. Since i still have unspent amount in that transactionId so i used the same TransactionId this time as well. I got success response along with hash in the code but when i went to explorer i cannot find another transaction there is only one transaction. Should i use different transactionId or is this anything i missed. Please help !
Thanks in advance&lt;/p&gt;

</summary>
</entry>
<entry>
<id>https://bitcoin.stackexchange.com/q/105030</id>
<rank scheme=”https://bitcoin.stackexchange.com”>-1</rank>
<title type=”text”>How to create crypto curency online for free? [closed]</title>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”currencies”></category>
<author>
<name>546pvp</name>
<uri>https://bitcoin.stackexchange.com/users/118985</uri>
</author>
<link rel=”alternate” href=”https://bitcoin.stackexchange.com/questions/105030/how-to-create-crypto-curency-online-for-free”>
<published>2021-03-31T12:53:41Z</published>
<updated>2021-03-31T12:53:41Z</updated>
<summary type=”html”>
&lt;p&gt;For free? Because i want Make my curency for paying online. And if you answer you will get subscribe on youtube, follow. And others&lt;/p&gt;

</summary>
</entry>
<entry>
<id>https://bitcoin.stackexchange.com/q/105029</id>
<rank scheme=”https://bitcoin.stackexchange.com”>0</rank>
<title type=”text”>Can I start a Bitcoin Private Node using bitcoin-qt?</title>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”bitcoin-qt-setup”></category>
<author>
<name>s k</name>
<uri>https://bitcoin.stackexchange.com/users/118892</uri>
</author>
<link rel=”alternate” href=”https://bitcoin.stackexchange.com/questions/105029/can-i-start-a-bitcoin-private-node-using-bitcoin-qt”>
<published>2021-03-31T12:53:19Z</published>
<updated>2021-03-31T13:06:54Z</updated>
<summary type=”html”>
&lt;p&gt;Currently I am starting a private node using:&lt;/p&gt;
&lt;pre&gt;&lt;code&gt;bitcoind -regtest -port=11111 -datadir=.data -rpcport=11112
&lt;/code&gt;&lt;/pre&gt;
&lt;p&gt;I can’t find the &lt;code&gt;-regtest&lt;/code&gt; option in qt.&lt;/p&gt;

</summary>
</entry>
<entry>
<id>https://bitcoin.stackexchange.com/q/105028</id>
<rank scheme=”https://bitcoin.stackexchange.com”>0</rank>
<title type=”text”>How is that https://rest.bitcoin.com API returns differend xPub child address rather than IANCOLEMAN site?</title>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”blockchain.info”></category>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”bip32-hd-wallets”></category>
<author>
<name>János</name>
<uri>https://bitcoin.stackexchange.com/users/19532</uri>
</author>
<link rel=”alternate” href=”https://bitcoin.stackexchange.com/questions/105028/how-is-that-https-rest-bitcoin-com-api-returns-differend-xpub-child-address-ra”>
<published>2021-03-31T12:44:32Z</published>
<updated>2021-03-31T12:44:32Z</updated>
<summary type=”html”>
&lt;p&gt;Checking this xPub:&lt;/p&gt;
&lt;blockquote&gt;
&lt;p&gt;xpub6ChdmoJP445St7P1cxD62mvZvKGfVgf1A6vfUVmG1vU3b8phiQAAjCqAYCV268BoTmkgXWA12mGFCJiGVs4p8KYrLESyA9SEi2YP7bXgzb8&lt;/p&gt;
&lt;/blockquote&gt;
&lt;p&gt;&lt;strong&gt;bitcoin.com&lt;/strong&gt; api return this address: &lt;code&gt;bitcoincash:qqtd5fp45cd8cv772e6g4flkp4puhp47lcaprlth45&lt;/code&gt;&lt;/p&gt;
&lt;p&gt;But it is not in the first 100 derived address in IANCOLEMAN site, strange. Do you have any idea why?&lt;/p&gt;
&lt;p&gt;&lt;a href=”https://i.stack.imgur.com/cwSjz.png” rel=”nofollow noreferrer”&gt;&lt;img src=”https://i.stack.imgur.com/cwSjz.png” alt=”enter image description here” /&gt;&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;&lt;a href=”https://i.stack.imgur.com/e9RUd.png” rel=”nofollow noreferrer”&gt;&lt;img src=”https://i.stack.imgur.com/e9RUd.png” alt=”enter image description here” /&gt;&lt;/a&gt;&lt;/p&gt;

</summary>
</entry>
<entry>
<id>https://bitcoin.stackexchange.com/q/105026</id>
<rank scheme=”https://bitcoin.stackexchange.com”>1</rank>
<title type=”text”>Not able to connect to bitcoind on mac mini</title>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”bitcoind”></category>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”mac”></category>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”port”></category>
<author>
<name>MPL</name>
<uri>https://bitcoin.stackexchange.com/users/118976</uri>
</author>
<link rel=”alternate” href=”https://bitcoin.stackexchange.com/questions/105026/not-able-to-connect-to-bitcoind-on-mac-mini”>
<published>2021-03-31T10:30:05Z</published>
<updated>2021-03-31T12:23:19Z</updated>
<summary type=”html”>
&lt;p&gt;I’m running Bisq v1.6.1 on a iMac and that works fine using &amp;quot;use provided bitcoin Core nodes&amp;quot;
I also running a bitcoin core node on a mac Mini in the same local network on address 192.168.0.70&lt;/p&gt;
&lt;p&gt;Putting this address in &amp;quot;Use custom Bitcoin Core nodes&amp;quot; and also checking this radio button does not work. The &amp;quot;Bitcoin network peers&amp;quot; stays at 0&lt;/p&gt;
&lt;p&gt;The network in itself is working, as I can connect to the mini using the remote desktop&lt;/p&gt;
&lt;p&gt;I found out that this issue is due to the fact that ports 8333 and 8332 are closed on the mac mini.&lt;/p&gt;
&lt;p&gt;output from nmap&lt;/p&gt;
&lt;pre&gt;&lt;code&gt;PORT STATE SERVICE
8332/tcp filtered unknown

PORT STATE SERVICE
8333/tcp filtered bitcoin
&lt;/code&gt;&lt;/pre&gt;
&lt;p&gt;pf.conf looks like this:&lt;/p&gt;
&lt;pre&gt;&lt;code&gt;pass in proto tcp from any to any port 8332
pass in proto tcp from any to any port 8333
&lt;/code&gt;&lt;/pre&gt;
&lt;p&gt;Executed:&lt;/p&gt;
&lt;pre&gt;&lt;code&gt;sudo pfctl -f /etc/pf.conf
sudo pfctl -E
&lt;/code&gt;&lt;/pre&gt;
&lt;p&gt;Output from sudo pfctl -sr:&lt;/p&gt;
&lt;pre&gt;&lt;code&gt;No ALTQ support in kernel
ALTQ related functions disabled
pass in proto tcp from any to any port = 8332 flags S/SA keep state
pass in proto tcp from any to any port = 8333 flags S/SA keep state
&lt;/code&gt;&lt;/pre&gt;
&lt;p&gt;My bitcoin.conf looks like this&lt;/p&gt;
&lt;pre&gt;&lt;code&gt;# Bitcoin daemon
server=1
txindex=1

# Network
listen=1
listenonion=1
proxy=127.0.0.1:9050
bind=127.0.0.1

# Connections
rpcuser=****
rpcpassword=****
rpcallowip=192.168.0.0/24
rpcconnect=127.0.0.1
rpcport=8332

zmqpubrawblock=tcp://127.0.0.1:28332
zmqpubrawtx=tcp://127.0.0.1:28333

peerbloomfilters=1
&lt;/code&gt;&lt;/pre&gt;
&lt;p&gt;Also rebooting doesn’t help&lt;/p&gt;

</summary>
</entry>
<entry>
<id>https://bitcoin.stackexchange.com/q/105025</id>
<rank scheme=”https://bitcoin.stackexchange.com”>0</rank>
<title type=”text”>How can I get Bitcoin Cash price? [closed]</title>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”bitcoin-cash”></category>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”exchange-rate”></category>
<author>
<name>János</name>
<uri>https://bitcoin.stackexchange.com/users/19532</uri>
</author>
<link rel=”alternate” href=”https://bitcoin.stackexchange.com/questions/105025/how-can-i-get-bitcoin-cash-price”>
<published>2021-03-31T10:13:25Z</published>
<updated>2021-03-31T10:13:25Z</updated>
<summary type=”html”>
&lt;p&gt;Is it any public API which show Bitcoin Cash exchange rate? An approximate value is satisfying.&lt;/p&gt;

</summary>
</entry>
<entry>
<id>https://bitcoin.stackexchange.com/q/105018</id>
<rank scheme=”https://bitcoin.stackexchange.com”>0</rank>
<title type=”text”>Mining pools repayment in a coinbase tx</title>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”mining-pools”></category>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”coinbase-transaction”></category>
<author>
<name>Nima</name>
<uri>https://bitcoin.stackexchange.com/users/106027</uri>
</author>
<link rel=”alternate” href=”https://bitcoin.stackexchange.com/questions/105018/mining-pools-repayment-in-a-coinbase-tx”>
<published>2021-03-31T03:28:28Z</published>
<updated>2021-03-31T04:57:32Z</updated>
<summary type=”html”>
&lt;p&gt;Is it possible to add more outputs than one to the coinbase transaction? And if it is, can miners use them to repay users for renting hash to the pool?
I think in this case they know who to pay and this could prevent blocks from being found almost instantly and empty.&lt;/p&gt;

</summary>
</entry>
<entry>
<id>https://bitcoin.stackexchange.com/q/105014</id>
<rank scheme=”https://bitcoin.stackexchange.com”>0</rank>
<title type=”text”>Coinbase API create new address returns 404 “not found”</title>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”api”></category>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”coinbase.com”></category>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”coinbase-transaction”></category>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”.net”></category>
<author>
<name>Nikola</name>
<uri>https://bitcoin.stackexchange.com/users/118957</uri>
</author>
<link rel=”alternate” href=”https://bitcoin.stackexchange.com/questions/105014/coinbase-api-create-new-address-returns-404-not-found”>
<published>2021-03-30T21:49:29Z</published>
<updated>2021-03-31T06:02:49Z</updated>
<summary type=”html”>
&lt;p&gt;I am trying to create a new address for my Coinbase account to try putting some coins in it with my application.
I am using .Net core for accessing the Coinbase endpoint.
I have tried both creating requests manually and using the NuGet package &amp;quot;Coinbase&amp;quot;, for casual requests like fetching user data, changing user data (nickname) everything is working fine (so the error is not in bad request creation or similar) except when I want to create a new address for putting some crypto in it. It returns not found. Also I tried fetching the list of addresses and it also returns 404 (I have plenty of addresses when I check my account under Settings/Crypto Addresses).
Do I miss some configuration on my Coinbase account? I am using the API key and API secret and I granted all permissions to it. I have linked that account to Coinbase wallet on my phone.
Thanks for the help.&lt;/p&gt;

</summary>
</entry>
<entry>
<id>https://bitcoin.stackexchange.com/q/105013</id>
<rank scheme=”https://bitcoin.stackexchange.com”>0</rank>
<title type=”text”>Bitcoin transaction confirmed and broadcasted to the Network [closed]</title>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”community”></category>
<author>
<name>Frank Villa</name>
<uri>https://bitcoin.stackexchange.com/users/107198</uri>
</author>
<link rel=”alternate” href=”https://bitcoin.stackexchange.com/questions/105013/bitcoin-transaction-confirmed-and-broadcasted-to-the-network”>
<published>2021-03-30T21:18:30Z</published>
<updated>2021-03-31T10:35:30Z</updated>
<summary type=”html”>
&lt;p&gt;I have a transaction that was broadcast to the network on May-11-2020 and has 47,040 confirmations. It has 2 outputs, one is spent and the other is unspent.&lt;/p&gt;
&lt;p&gt;I guess what I am asking is where to go from here.&lt;/p&gt;
&lt;p&gt;I am not sure if there is a receiving address. But this is my address. This is my transaction in the network&lt;/p&gt;
&lt;pre&gt;&lt;code&gt;This transaction was first broadcast to the Bitcoin network
on May 11, 2020 at 10:56 AM PDT. The transaction currently has
47,040 confirmations on the network. At the time of this
transaction, 0.14669553 BTC was sent with a value of $1,246.08.
The current value of this transaction is now $8,652.56.

Hash f0ff6231e0a9ba3fc5d0ae5f618850e0a57a161fd69007bfbdfba6e1c6b33e5c
2020-05-11 10:56
3GmS7i3Pm8xA4Jb9fwYCbT7UkJWDuNiWAX 0.14689000 BTC
bc1qk7h6nq2j4whztak03puk05t9zh85aup330gu4utal5n0d5k25usq0zwgh3 0.06567816 BTC
1D97VBoikYqWzt29AZ3jXeYqstYnq1CyhJ 0.08101737 BTC
Fee 0.00019447 BTC (70.206 sat/B – 25.388 sat/WU – 277 bytes)
0.14669553 BTC

Details
Hash f0ff6231e0a9ba3fc5d0ae5f618850e0a57a161fd69007bfbdfba6e1c6b33e5c
Status Confirmed
Received Time 2020-05-11 10:56
Size 277 bytes
Weight 766
Included in Block 629993
Confirmations 47,040
Total Input 0.14689000 BTC
Total Output 0.14669553 BTC
Fees 0.00019447 BTC
Fee per byte 70.206 sat/B
Fee per weight unit 25.388 sat/WU
Value when transacted $1,246.08

Inputs HEX ASM
Index 0
Details
Output Address 3GmS7i3Pm8xA4Jb9fwYCbT7UkJWDuNiWAX
Value 0.14689000 BTC
Pkscript OP_HASH160 a55fbed7d8fe42bb11b66f9ae9bfe9ebfcbe3dfa OP_EQUAL
Sigscript 0020abde5e3877501ef34dcda0f42aa3f52673b395a866ad61f3660d2d036a7c5fc4
Witness
3044022001843fae362c47df2a1f678ae96c5c559c50ea2a110fd3dc2a0f8fd801afa0210220225e61b9d0340b516d54d454b838204fa9e34d75547f7e5a7b468eb6186fb9c501
5121035bef36265999cb6534ebfc7b54c334faaf50f54a2a46d89703f51468d9674e8551ae

Outputs
Index 0
Details Spent
Address
bc1qk7h6nq2j4whztak03puk05t9zh85aup330gu4utal5n0d5k25usq0zwgh3
Value 0.06567816 BTC
Pkscript OP_0 b7afa98152abae25f6cf887967d16515cf4ef0318bd1caf17dfd26f6d2caa720
Index 1
Details Unspent
Address 1D97VBoikYqWzt29AZ3jXeYqstYnq1CyhJ
Value 0.08101737 BTC
Pkscript OP_DUP OP_HASH160 852a405633df80b64299a23284d9bf1ec7dd0d75 OP_EQUALVERIFY OP_CHECKS
&lt;/code&gt;&lt;/pre&gt;
&lt;p&gt;&lt;a href=”https://blockstream.info/tx/f0ff6231e0a9ba3fc5d0ae5f618850e0a57a161fd69007bfbdfba6e1c6b33e5c” rel=”nofollow noreferrer”&gt;Here is a link to the transaction&lt;/a&gt;&lt;/p&gt;

</summary>
</entry>
<entry>
<id>https://bitcoin.stackexchange.com/q/105011</id>
<rank scheme=”https://bitcoin.stackexchange.com”>0</rank>
<title type=”text”>Create wallets on website PHP</title>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”wallet”></category>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”cryptography”></category>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”php”></category>
<author>
<name>Jacopo Mosconi</name>
<uri>https://bitcoin.stackexchange.com/users/118954</uri>
</author>
<link rel=”alternate” href=”https://bitcoin.stackexchange.com/questions/105011/create-wallets-on-website-php”>
<published>2021-03-30T20:31:05Z</published>
<updated>2021-03-31T10:43:48Z</updated>
<summary type=”html”>
&lt;p&gt;I am trying to create a website that allows the deposit of cryptocurrencies (BTC / ETH / LTC) in the account, consequently I need to create a wallet at the personal registration for each of these 3 cryptocurrencies.
I would also like it to be possible to send crypto through the wallets registered on the site (p2p) and the possibility of receiving / sending crypto.&lt;/p&gt;
&lt;p&gt;How can it be done? Is it possible to do this in PHP?&lt;/p&gt;
&lt;p&gt;Every post I found on the forum is very old, probably a lot of things have changed.&lt;/p&gt;

</summary>
</entry>
<entry>
<id>https://bitcoin.stackexchange.com/q/105006</id>
<rank scheme=”https://bitcoin.stackexchange.com”>-2</rank>
<title type=”text”>What are the main obstacles to supporting Lightning Network in Bitcoin Core?</title>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”bitcoin-core”></category>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”lightning-network”></category>
<author>
<name>Daishaun</name>
<uri>https://bitcoin.stackexchange.com/users/118941</uri>
</author>
<link rel=”alternate” href=”https://bitcoin.stackexchange.com/questions/105006/what-are-the-main-obstacles-to-supporting-lightning-network-in-bitcoin-core”>
<published>2021-03-30T17:13:15Z</published>
<updated>2021-03-31T09:51:44Z</updated>
<summary type=”html”>
&lt;p&gt;I have found &lt;code&gt;c-lightning&lt;/code&gt; doesn’t support Windows, so there are few projects that support Lightning and are written in C/C++ and run on Microsoft Windows.&lt;/p&gt;
&lt;p&gt;It strikes me that it would be useful if Bitcoin Core supported this in and of itself. But it doesn’t.&lt;/p&gt;
&lt;p&gt;You might argue that it would add a ton of complexity to the carefully audited Bitcoin Core source code.&lt;/p&gt;
&lt;p&gt;Couldn’t it be made into some sort of &amp;quot;plug-in&amp;quot;, at least, which adds support right into Bitcoin Core?&lt;/p&gt;
&lt;p&gt;What obstacles are there to adding C/C++ Lightning Network support to Bitcoin core?&lt;/p&gt;

</summary>
</entry>
<entry>
<id>https://bitcoin.stackexchange.com/q/104972</id>
<rank scheme=”https://bitcoin.stackexchange.com”>0</rank>
<title type=”text”>How can I pull the “Candles” argument from the Huobi websocket data?</title>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”api”></category>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”python”></category>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”historical-trade-data”></category>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”binance”></category>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”websockets”></category>
<author>
<name>Kalindro</name>
<uri>https://bitcoin.stackexchange.com/users/118910</uri>
</author>
<link rel=”alternate” href=”https://bitcoin.stackexchange.com/questions/104972/how-can-i-pull-the-candles-argument-from-the-huobi-websocket-data”>
<published>2021-03-29T17:16:57Z</published>
<updated>2021-03-31T18:02:34Z</updated>
<summary type=”html”>
&lt;p&gt;I’ve a problem with Huobi Websocket, I know my ways in REST API but new to asyncio and websockets, and Huobi only gives resonable amount of history through websocket request so I’m stuck with it. I’m using their [sdk](&lt;a href=”https://github.com/HuobiRDCenter/huobi_Python” rel=”nofollow noreferrer”&gt;https://github.com/HuobiRDCenter/huobi_Python&lt;/a&gt;. I managed to figure this out:&lt;/p&gt;
&lt;pre&gt;&lt;code&gt;from huobi.client.market import MarketClient
from huobi.client.market import CandlestickInterval
import pandas as pd
from pandas import DataFrame as df

def callback(candlestick_req: &amp;quot;CandlestickReq&amp;quot;):
Candles = candlestick_req.data

Market_client = MarketClient()
Market_client.req_candlestick(&amp;quot;btcusdt&amp;quot;, CandlestickInterval.MIN60, callback, from_ts_second = 1611788400, end_ts_second = 1614812400)

History_dataframe_new[&amp;quot;Date&amp;quot;] = [Candles[f].id for f in range(len(Candles))]
History_dataframe_new[&amp;quot;Open&amp;quot;] = [Candles[f].open for f in range(len(Candles))]
History_dataframe_new[&amp;quot;High&amp;quot;] = [Candles[f].high for f in range(len(Candles))]
History_dataframe_new[&amp;quot;Low&amp;quot;] = [Candles[f].low for f in range(len(Candles))]
History_dataframe_new[&amp;quot;Close&amp;quot;] = [Candles[f].close for f in range(len(Candles))]
History_dataframe_new[&amp;quot;Volume&amp;quot;] = [Candles[f].vol for f in range(len(Candles))]
&lt;/code&gt;&lt;/pre&gt;
&lt;p&gt;The problem is, how can I get this &lt;code&gt;Candles&lt;/code&gt; argument out of the callback to use below? I’m not calling callback directly, only in the &lt;code&gt;req_candlestick&lt;/code&gt; so return won’t work. And it’s a callback so I propably have to wait for the response somehow. And tips how to do that? Or if what I’m trying here is the correct way?&lt;/p&gt;

</summary>
</entry>
<entry>
<id>https://bitcoin.stackexchange.com/q/103639</id>
<rank scheme=”https://bitcoin.stackexchange.com”>3</rank>
<title type=”text”>What’s a good example of Layer 1 vs Layer 2 features technical advantage?</title>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”blockchain”></category>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”lightning-network”></category>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”altcoin”></category>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”architecture”></category>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”aeternity-blockchain”></category>
<author>
<name>Omar Saadoun</name>
<uri>https://bitcoin.stackexchange.com/users/114677</uri>
</author>
<link rel=”alternate” href=”https://bitcoin.stackexchange.com/questions/103639/whats-a-good-example-of-layer-1-vs-layer-2-features-technical-advantage”>
<published>2021-03-17T21:34:06Z</published>
<updated>2021-03-31T10:47:19Z</updated>
<summary type=”html”>
&lt;p&gt;I’m looking for a good example and explanation from a software architecture perspective BUT for general audience about the benefits of solving and having blockchain features on Layer 1 not disregarding any Layer 2 solution or blockchain but in fact comparing.&lt;/p&gt;
&lt;p&gt;In example any scaling solution for off-chain transaction will definitely face speed issues in comparison to one that was solved on the original design of the blockchain.&lt;/p&gt;
&lt;p&gt;It’s not a fair comparison because both have their reasons, their strengths and their fame but if you take lightning or æternity state channels you will have some design flaws that should be talked about to help people to understand and decide based on more than just marketing.&lt;/p&gt;
&lt;p&gt;Again this isn’t in any way a critic towards any of the solution but an example to talk about design and architecture and not about which had better marketing.&lt;/p&gt;

</summary>
</entry>
<entry>
<id>https://bitcoin.stackexchange.com/q/103112</id>
<rank scheme=”https://bitcoin.stackexchange.com”>0</rank>
<title type=”text”>What if a multibit classic private key is decrypted into garbled codes?</title>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”private-key”></category>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”multibit”></category>
<author>
<name>seeker</name>
<uri>https://bitcoin.stackexchange.com/users/116499</uri>
</author>
<link rel=”alternate” href=”https://bitcoin.stackexchange.com/questions/103112/what-if-a-multibit-classic-private-key-is-decrypted-into-garbled-codes”>
<published>2021-02-28T05:39:09Z</published>
<updated>2021-03-31T12:06:05Z</updated>
<summary type=”html”>
&lt;p&gt;7 years ago I exported the multibit classic wallet and private key, both encrypted. Only remember the key password now. Problems occurred when I tried to decrypt the key in following ways:&lt;/p&gt;
&lt;ol&gt;
&lt;li&gt;&lt;p&gt;installed MultiBit Classic 0.5.17 from web (might be dangerous).&lt;/p&gt;
&lt;p&gt;Created a new wallet and tried &amp;quot;tools–import private key&amp;quot;. Chose the old key, input the password and clicked &amp;quot;decrypt&amp;quot;. The password seemed correct because there wasn’t a fail note, which always appeared for other passwords.&lt;/p&gt;
&lt;p&gt;Then, when I clicked &amp;quot;import private key&amp;quot;, a fail note said &amp;quot;&lt;strong&gt;could not understand address in import file&lt;/strong&gt;&amp;quot;.&lt;/p&gt;
&lt;p&gt;To compare I exported a new encrypted private key and followed steps above. It worked well. Though the new key had a wrong timestamp in 2014, it didn’t hinder the import.&lt;/p&gt;
&lt;/li&gt;
&lt;li&gt;&lt;p&gt;Used openssl in cmd to do direct decryption, found the only code:&lt;/p&gt;
&lt;/li&gt;
&lt;/ol&gt;
&lt;p&gt;&lt;code&gt;openssl enc -d -p -aes-256-cbc -md md5 -a -in multibit.key -out key.txt -pass ‘pass:myPassword’&lt;/code&gt;&lt;/p&gt;
&lt;p&gt;that can decrypt the new key successfully. When decrypting the old key, it didn’t show any error either, no &amp;quot;bad decryption&amp;quot;. But the plain text was garbled like&lt;/p&gt;
&lt;blockquote&gt;
&lt;p&gt;?躠磱Q?39’ad&amp;quot;t鉼!?狡&lt;/p&gt;
&lt;/blockquote&gt;
&lt;blockquote&gt;
&lt;p&gt;_決[qp嗽雔紧鸘:?A濵彆r闞? &amp;amp;*绉i#唹B7鼞_z?&lt;/p&gt;
&lt;/blockquote&gt;
&lt;p&gt;Tried lots of text-code-converter and they only gave different garbled text…&lt;/p&gt;
&lt;p&gt;How would this happen? Was the old key exported incorrectly in 2013? Is there any hope?&lt;/p&gt;

</summary>
</entry>
<entry>
<id>https://bitcoin.stackexchange.com/q/101563</id>
<rank scheme=”https://bitcoin.stackexchange.com”>7</rank>
<title type=”text”>Is it possible to use BitGo’s wallet with other software (Electrum or else), what is the used derivation path?</title>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”private-key”></category>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”electrum”></category>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”multi-signature”></category>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”xpub”></category>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”bitgo”></category>
<author>
<name>intika</name>
<uri>https://bitcoin.stackexchange.com/users/114228</uri>
</author>
<link rel=”alternate” href=”https://bitcoin.stackexchange.com/questions/101563/is-it-possible-to-use-bitgos-wallet-with-other-software-electrum-or-else-wha”>
<published>2021-01-17T08:34:51Z</published>
<updated>2021-03-31T04:54:15Z</updated>
<summary type=”html”>
&lt;p&gt;BitGo wallets are based on a 2-of-3 multi-signature, the end user have access to:&lt;/p&gt;
&lt;pre&gt;&lt;code&gt;- Public key (xpub) of the 3rd signer (as the main wallet xpub)
– Native Segwit (Bech32), bc1… addresses to receive BTC assets
– Private key/seed (BIP39) of the 1st signer (and public key xpub as well)
– Private key/seed (BIP39) of the 2nd signer (and public key xpub as well)
&lt;/code&gt;&lt;/pre&gt;
&lt;p&gt;Seeds can be converted to private key &lt;a href=”https://bitwala.github.io/bip39-recovery/” rel=”nofollow noreferrer”&gt;here&lt;/a&gt;, BitGo provide it’s own &lt;a href=”https://github.com/BitGo/wallet-recovery-wizard/releases” rel=”nofollow noreferrer”&gt;recovery-tool&lt;/a&gt; (it’s debug infos can be used to get the xpub keys of the first and second signer).&lt;/p&gt;
&lt;p&gt;Public xpub keys can be converted to Zpub (p2wsh) &lt;a href=”https://jlopp.github.io/xpub-converter/” rel=”nofollow noreferrer”&gt;here&lt;/a&gt; or with &lt;a href=”https://electrum.org/” rel=”nofollow noreferrer”&gt;Electrum&lt;/a&gt; with the command &lt;code&gt;./electrum.AppImage convert_xkey ‘xpub…’ ‘p2wsh’ –offline&lt;/code&gt; (Electrum and xpub-converter uses &lt;a href=”https://github.com/satoshilabs/slips/blob/master/slip-0132.md” rel=”nofollow noreferrer”&gt;those specs&lt;/a&gt; and derivations paths).&lt;/p&gt;
&lt;p&gt;While it is possible to import the BitGo wallet into Electrum without error, Electrum never generate the same receiving address as BitGo, Following &lt;a href=”https://bitcointalk.org/index.php?topic=5250035.0″ rel=”nofollow noreferrer”&gt;this&lt;/a&gt; and &lt;a href=”https://translate.google.com/translate?hl=en&amp;amp;sl=de&amp;amp;u=https://bitcointalk.org/index.php%3Ftopic%3D5250032.0&amp;amp;prev=search&amp;amp;pto=aue” rel=”nofollow noreferrer”&gt;this&lt;/a&gt; bitcointalk’s forum threads:&lt;/p&gt;
&lt;p&gt;&lt;strong&gt;1. What is the derivation path used by BitGo Bitcoin wallet?&lt;/strong&gt;&lt;br /&gt;
&lt;strong&gt;2. Is it possible to use BitGo wallet in any other software like Electrum or else?&lt;/strong&gt;&lt;/p&gt;
&lt;p&gt;&lt;em&gt;Other related QA: &lt;a href=”https://bitcoin.stackexchange.com/questions/77047/how-to-link-a-bitcoin-address-to-a-wallet-address”&gt;1&lt;/a&gt;, &lt;a href=”https://bitcoin.stackexchange.com/questions/69835/how-does-bitgo-multi-sig-work”&gt;2&lt;/a&gt;, &lt;a href=”https://bitcoin.stackexchange.com/questions/58159/how-can-i-import-my-bitgo-wallet-backup-into-electrum”&gt;3&lt;/a&gt;, (note that I am using Bitgo’s wallet through Bitwala)&lt;/em&gt;&lt;/p&gt;

</summary>
</entry>
<entry>
<id>https://bitcoin.stackexchange.com/q/99782</id>
<rank scheme=”https://bitcoin.stackexchange.com”>0</rank>
<title type=”text”>How to validate the change address in a multisig transaction?</title>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”multi-signature”></category>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”change”></category>
<author>
<name>Jeff</name>
<uri>https://bitcoin.stackexchange.com/users/111679</uri>
</author>
<link rel=”alternate” href=”https://bitcoin.stackexchange.com/questions/99782/how-to-validate-the-change-address-in-a-multisig-transaction”>
<published>2020-11-01T16:51:26Z</published>
<updated>2021-03-31T18:06:55Z</updated>
<summary type=”html”>
&lt;p&gt;I am using Specter Desktop to create a PSBT for a multisig transaction with some hardware wallets to sign. Part of the PSBT is a change address and I can match what the hardware wallet says to what Specter Desktop intends, but since I don’t trust Specter Desktop 100% how can I validate that this change address derives from my multisig wallet?&lt;/p&gt;

</summary>
</entry>
<entry>
<id>https://bitcoin.stackexchange.com/q/99749</id>
<rank scheme=”https://bitcoin.stackexchange.com”>1</rank>
<title type=”text”>How to improve bitcoin-qt when downloading blockchain? (very technical, dev views appreciated)</title>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”blockchain”></category>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”bitcoincore-development”></category>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”synchronization”></category>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”source-code”></category>
<author>
<name>pisjatblin</name>
<uri>https://bitcoin.stackexchange.com/users/111537</uri>
</author>
<link rel=”alternate” href=”https://bitcoin.stackexchange.com/questions/99749/how-to-improve-bitcoin-qt-when-downloading-blockchain-very-technical-dev-view”>
<published>2020-10-30T22:43:38Z</published>
<updated>2021-03-31T07:02:40Z</updated>
<summary type=”html”>
&lt;p&gt;GitHub suggested discussing here before bothering developers with an issue.
So be it! :)&lt;/p&gt;
&lt;p&gt;I’m running Bitcoin Core Version v0.20.1 and Linux Mint 18.3 on crappy old hardware. Pruning blockchain to 2 G and setting &lt;code&gt;dbcache=2048&lt;/code&gt; didn’t help much. Moving &lt;code&gt;datadir&lt;/code&gt; from HDD onto a USB-Stick did a little.&lt;/p&gt;
&lt;p&gt;&lt;code&gt;top&lt;/code&gt; says CPU around 20% can reach up to 40 if I manually drop slow or unresponsive nodes.
CPU frequency is rarely going up. So, no issue here.&lt;/p&gt;
&lt;p&gt;Memory usage is fine too, actually a lot of headroom. Looks like bitcoin-qt doesn’t need that much cache.&lt;/p&gt;
&lt;p&gt;Swap is empty. (&lt;code&gt;vm.swappiness=5&lt;/code&gt;)&lt;/p&gt;
&lt;p&gt;iostat&lt;/p&gt;
&lt;pre&gt;&lt;code&gt;Device: rrqm/s wrqm/s r/s w/s rkB/s wkB/s avgrq-sz avgqu-sz await r_await w_await svctm %util
sdc 0,00 0,00 549,00 0,00 51125,00 0,00 186,25 1,06 1,92 1,92 0,00 1,70 93,60

&lt;/code&gt;&lt;/pre&gt;
&lt;p&gt;Bottleneck seems to be file I/O. Which confuses me since that is what a cache is meant to fix, isn’t it?&lt;/p&gt;
&lt;p&gt;Now to my questions:&lt;/p&gt;
&lt;p&gt;Is there anything I am missing to improve disk access?
Is there an open issue on GitHub regarding this already?&lt;/p&gt;
&lt;p&gt;And secondly for the experts on dropping lazy nodes. Can you give me a hint at which classes I have to look to understand the strategy? Or even better a link to the discussions on that topic.&lt;br /&gt;
For I don’t want to start an arms race between clients seeking faster download and nodes trying to serve fair.&lt;/p&gt;
&lt;p&gt;Short summary what I’ve learned so far.&lt;/p&gt;
&lt;ul&gt;
&lt;li&gt;Don’t use USB-Sticks for &lt;code&gt;datadir&lt;/code&gt;. For bitcoin-qt might shutdown due to Fatal LevelDB errors.&lt;/li&gt;
&lt;li&gt;Pruning increases disk I/O while saving disk space.&lt;/li&gt;
&lt;li&gt;Even on crappy old hardware memory and CPU are most probably not the limiting factor.&lt;/li&gt;
&lt;/ul&gt;

</summary>
</entry>
<entry>
<id>https://bitcoin.stackexchange.com/q/80385</id>
<rank scheme=”https://bitcoin.stackexchange.com”>0</rank>
<title type=”text”>What could stop bitcoin-seeder from “hearing” DNS queries?</title>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”seed”></category>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”dns”></category>
<author>
<name>dbkeys</name>
<uri>https://bitcoin.stackexchange.com/users/5371</uri>
</author>
<link rel=”alternate” href=”https://bitcoin.stackexchange.com/questions/80385/what-could-stop-bitcoin-seeder-from-hearing-dns-queries”>
<published>2018-10-24T19:20:10Z</published>
<updated>2021-03-31T06:03:15Z</updated>
<summary type=”html”>
&lt;p&gt;I’m running several &lt;a href=”https://github.com/sipa/bitcoin-seeder” rel=”nofollow noreferrer”&gt;bitcoin-seeders&lt;/a&gt;. Under Ubuntu 14.04 &amp;amp; 16.04, they run fine and answer queries.
On Ubuntu 18.04, however, &lt;em&gt;dnsseed&lt;/em&gt; does not detect the queries sent to it. I know the machine is receiving the query because DNS requests are monitored with &lt;a href=”http://dns.measurement-factory.com/tools/dnstop/” rel=”nofollow noreferrer”&gt;dnstop&lt;/a&gt;, and every DNS query sent with ‘&lt;em&gt;dig&lt;/em&gt;’ is sensed by dnstop and reported, but &lt;em&gt;dnsseed&lt;/em&gt; shows “0 DNS Requests”.&lt;br&gt;
There is no firewall running and apparmor has been disabled. What tests could be run or troubleshooting strategy followed to find the problem ?&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Under Ubuntu 16.04:&lt;/strong&gt;&lt;/p&gt;

&lt;pre&gt;&lt;code&gt;Loading dnsseed.dat…done Starting 4 DNS threads for ra.zmark.org on
173.255.252.140 (port 5353)…….done Starting seeder…done [18-10-24 19:27:41] 274/37963 available (1258 tried in 1000s, 38980 new, 1536
active), 0 banned; 3 DNS requests, 3 db queries
&lt;/code&gt;&lt;/pre&gt;

&lt;p&gt;&lt;strong&gt;Under Ubuntu 18.04:&lt;/strong&gt;&lt;/p&gt;

&lt;pre&gt;&lt;code&gt;Supporting whitelisted filters: 0x1,0x5,0x9,0xd Loading
dnsseed.dat…done Starting 4 DNS threads for shido.bitmark.one on
139.162.122.138 (port 5353)…….done Starting seeder…done Starting 96 crawler threads…done [18-10-24 19:25:23] 3593/87930 available
(64497 tried in 3805s, 21897 new, 1536 active), 1 banned; 0 DNS
requests, 0 db queries
&lt;/code&gt;&lt;/pre&gt;

&lt;p&gt;dnstop:&lt;/p&gt;

&lt;pre&gt;&lt;code&gt;Queries: 0 new, 1363 total Wed Oct 24 19:39:03 2018
Replies: 0 new, 191 total

Query Name Count % cum%
————————– ——— —— ——
shido.bitmark.one 1169 85.8 85.8
bitseed.xf2.org 117 8.6 94.4
org.members.linode.com 24 1.8 96.1
seed.bitcoin.sipa.be 20 1.5 97.6
dnsseed.bitcoin.dashjr.org 14 1.0 98.6
dnsseed.bluematt.me 12 0.9 99.5
motd.ubuntu.com 5 0.4 99.9
github.com 2 0.1 100.0
&lt;/code&gt;&lt;/pre&gt;

</summary>
</entry>
<entry>
<id>https://bitcoin.stackexchange.com/q/76865</id>
<rank scheme=”https://bitcoin.stackexchange.com”>0</rank>
<title type=”text”>Watch only Wallet help</title>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”bitcoin-wallet-app”></category>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”watch-only”></category>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”blockchain-wallet-app”></category>
<author>
<name>user84906</name>
<uri>https://bitcoin.stackexchange.com/users/84906</uri>
</author>
<link rel=”alternate” href=”https://bitcoin.stackexchange.com/questions/76865/watch-only-wallet-help”>
<published>2018-07-04T03:51:46Z</published>
<updated>2021-03-31T14:01:20Z</updated>
<summary type=”html”>
&lt;p&gt;i need help. I’m totally New with bitcoin. Last time i would buy something and when i pay i’ve got an sms-code for bitcoins with that i’ve to make the pay. I send this to a watch only Wallet. But that was wrong. What i can do to send it to the right wallet. I’ve no pc, only my Handy with the blockchain and bitcoin wallet APP. &lt;/p&gt;

</summary>
</entry>
<entry>
<id>https://bitcoin.stackexchange.com/q/65478</id>
<rank scheme=”https://bitcoin.stackexchange.com”>5</rank>
<title type=”text”>Which is the smallest hash that has ever been hashed?</title>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”blockchain”></category>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”block”></category>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”hash”></category>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”sha256″></category>
<author>
<name>ndsvw</name>
<uri>https://bitcoin.stackexchange.com/users/69241</uri>
</author>
<link rel=”alternate” href=”https://bitcoin.stackexchange.com/questions/65478/which-is-the-smallest-hash-that-has-ever-been-hashed”>
<published>2017-12-16T19:52:58Z</published>
<updated>2021-03-31T09:51:52Z</updated>
<summary type=”html”>
&lt;p&gt;Let’s assume, the hash &lt;code&gt;00000000000000000024c0bdbec66a889778c00bc69be0a96cbbd98b75c3ce09&lt;/code&gt; of block #499644 is smaller than &lt;code&gt;
0000000000000000002d429f39afec70c938e888c3417d690bbc85e83529991c&lt;/code&gt; of block #499645.&lt;/p&gt;

&lt;p&gt;They both have 18 Zeros, then &lt;code&gt;2=2&lt;/code&gt;, but then &lt;code&gt;4&amp;lt;d&lt;/code&gt;.&lt;/p&gt;

&lt;p&gt;Which is the smallest hash that has ever been hashed during cryptomining? How many zeros? Which block?&lt;/p&gt;

</summary>
</entry>
<entry>
<id>https://bitcoin.stackexchange.com/q/58317</id>
<rank scheme=”https://bitcoin.stackexchange.com”>1</rank>
<title type=”text”>trying to get text of a field in json rpc 2.0 response into ar PHP variable</title>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”json-rpc”></category>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”electrum”></category>
<category scheme=”https://bitcoin.stackexchange.com/tags” term=”php”></category>
<author>
<name>wilburunion</name>
<uri>https://bitcoin.stackexchange.com/users/57864</uri>
</author>
<link rel=”alternate” href=”https://bitcoin.stackexchange.com/questions/58317/trying-to-get-text-of-a-field-in-json-rpc-2-0-response-into-ar-php-variable”>
<published>2017-08-19T00:19:05Z</published>
<updated>2021-03-31T11:01:35Z</updated>
<summary type=”html”>
&lt;p&gt;I use json_decode to vardump a return which yields&lt;/p&gt;

&lt;p&gt;array(3)

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