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It looks like one of the blocks is corrupted, so you will actually need to resync. The easiest way is to just delete the blocks folder in the data directory. But that takes the most amount of time. You could try to find which blk.dat file contains the problem block, which in your case, looks like 303256. If you can figure out which blk.dat file it is in, then delete that file and all of the higher number files after it. You will still need to download some blocks, but not all of them. A reindex will also be required if you do that.
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what's the point of setting it to zero in the config if you remove the checkbox on the option menu? they should perform the same thing
also i don't use a config at all for core...
I think you only have to select one of the options to protect your wallet from the vulnerability. Each option should protect your wallet on its own. Bitcoin.org recommends updating your wallet to the latest version. It says 0.10.3 and 0.11.1, and the upcoming 0.12.0 are safe to use. You only need to upgrade if you downloaded a compiled wallet, if you built your wallet yourself it should have UPnP disabled by default. there is no 0.11.1 apparently, i found that they are at rc2 for this version, on a shady website, or at least it seems so... Neither of them have been released yet. They are still in the release candidate stage. 0.11.1rc2 is officially available at https://bitcoin.org/bin/bitcoin-core-0.11.1/test/0.10.3rc2 is officially available at https://bitcoin.org/bin/bitcoin-core-0.10.3/test/ |
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what's the point of setting it to zero in the config if you remove the checkbox on the option menu? they should perform the same thing
also i don't use a config at all for core...
For the daemon if you don't use core. |
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Apparently the miniupnpc library that bitcoin core uses has a buffer overflow library which makes it possible for someone in the local network to crash bitcoin nodes on that network. It may also be possible to carry out other attacks, but that has not yet been confirmed. More info here: https://bitcoin.org/en/alert/2015-10-12-upnp-vulnerability |
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I think it should work since bdb is only for the wallet.
Also, recompiling will not require a resync since your aren't deleting the data directory with the blockchain.
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Yes, anything you can do in regtest can be done on mainnet.
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Hi guys I want to create a simple linux cloud server which contains a database and some kind of script which updates the database when my BTC wallet receives a payment. It would be able to update the database with information such as the public key of the person who paid the BTC and the amount paid. Blockchain.info offers a service like this: https://blockchain.info/api/api_receive However the only libraries available are in PHP and Java both of which are foreign languages to me. I am a Python developer. Does anyone have any suggestions on how to do this or whether I am thinking about this completely wrong. Thanks! Hello jdeepee, i strongly recommend you to NOT USE blockchain.info API for deposit/accounting stuff. You should use a own local node (bitcoin daemon) on your project. You can of course use python for communication with your wallet over rpc-calls. more informations: https://github.com/jgarzik/python-bitcoinrpchttps://en.bitcoin.it/wiki/API_reference_(JSON-RPC)#Pythonca333 If your project is experimental and no user funds are affected you can also use python to communicate
with the API of blockchain.info. This is not limited on php/Java.
For example in my project r-scan i use python and simply make http requests and then parse json data (API-response). see https://github.com/ca333/rng-scannerIf I want to send bitcoins to multiple wallets is it recommended I do this through the Bitcoin daemon as-well or can I just use blockchain.info's API? You should really just do everything through bitcoin, it is pretty much the same functionality. |
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Can you post the Debug.log?
Also check your firewalls that they are allowing port 8333 both in and out.
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thanks for that.
yes, i know all that, BUT how my wallet knows which Nodes to contact?
Like bit torrent, when i load a torrent in my Mac, it goes to a server/tracker and that tracker connects me to all the peers sharing that torrent; that tracker knows who are the peers/nodes because i don't!
in bitcoin who is this tracker? who plays this role? how my wallet knows who are the NODES?
The client comes with a large number of nodes hard coded (called seed nodes) which are nodes that are known to have good uptimes and been up for a while. The data is compiled from what are called DNS seeds, which are a set of servers which are also hard coded. The node also keeps its own database of peers to connect to. On startup, the nodes first checks its own database of nodes. If it cannot connect to any nodes there, it queries the DNS seeds. The DNS seed servers will respond with nodes that are available for the node to connect to. If it happens to not be able to connect to those nodes, it will fallback to the hard coded seed nodes. The list of DNS seeds can be found here: https://github.com/bitcoin/bitcoin/blob/master/src/chainparams.cpp#L98These are the current DNS seeds: vSeeds.push_back(CDNSSeedData("bitcoin.sipa.be", "seed.bitcoin.sipa.be")); // Pieter Wuille
vSeeds.push_back(CDNSSeedData("bluematt.me", "dnsseed.bluematt.me")); // Matt Corallo
vSeeds.push_back(CDNSSeedData("dashjr.org", "dnsseed.bitcoin.dashjr.org")); // Luke Dashjr
vSeeds.push_back(CDNSSeedData("bitcoinstats.com", "seed.bitcoinstats.com")); // Christian Decker
vSeeds.push_back(CDNSSeedData("xf2.org", "bitseed.xf2.org")); // Jeff Garzik
vSeeds.push_back(CDNSSeedData("bitcoin.jonasschnelli.ch", "seed.bitcoin.jonasschnelli.ch")); // Jonas Schnelli |
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No, Bitcoin doesn't work like that. Everything is distributed, there is no central server. Every full node will receive every block and transaction and verify and validate to the consensus rules before relaying transactions that pass to its peers. Full nodes store all of the unconfirmed transactions in its mempool, a database in the memory. Miners will query this database (usually through something like getblocktemplate) and select a number transactions to include in a block. Once those transactions are included in the block, the block is broadcast through the node and those transactions are removed from the database. That is how miners know what transactions to mine.
Some wallets are not full nodes, but use what is called Simplified Payment Verification. Some SPV wallets, like those based on bitcoinj, will connect to full nodes. They do not receive every transaction and block and they do not relay transactions. SPV wallets assume that the data given to them by full nodes is valid. They request data from full nodes through bloom filters, which means that they will receive the data that they want and sometimes more than they need just to make sure that the full node cannot actually know what addresses the SPV wallet controls.
Other SPV wallets like electrum connect to a server for their data. It behaves exactly like a full node, but is a dedicated server for electrum. There are many of these servers and the user can choose which one they want to connect to. Those servers are run by volunteers.
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I think you are in great shock by losing some on this site but that is your fault you should choose carefully by doing responsible gambling it seems you are not aware of this, i will advice you open scam accusation against diggit if you have been scammed by this site and this is better way to ruin this site popularity and let other people about this. Dear STUPID MORON, I did not LOSE the money. I tried to withdraw it and I did not receive it. I deposited the 5 million Satoshi, and then when it took 4 hours to credit to my account I came on here and saw everyone posting about how the site is crap and will rip you off. So as soon as my 5 Million Sat was credited to my account 4 hours later, I put in a withdrawal request. The withdrawal did not ever go through but the 5 million was taken from my balance. It's been over 2 days and nothing. I have contacted the admin multiple times with no response. So why don't you shut your stupid fucking face and learn to fucking read before you come on here talkign shit you dumbass moron retarded piece of shit. Just for you, I have opened up a scam accusation against diggit.io, primarily for their failure to process withdrawals. You can check out the thread at https://bitcointalk.org/index.php?topic=1205470.0 and please post information that will help with the accusation, not just ranting. |
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1) How do people think that bitcoin is actually anonymous? You would have to buy them with your debit card/credit card in which banks have your information... why would you think that this stuff is actually anonymous and could be used in such a way?
There are other fairly anonymous ways to buy bitcoin like from forum members or other face-to-face deals. After you have bought bitcoin, there are also means to loose the trail of your coins, making it harder for people to track your spending and ownership. Some would tell you that bitcoin is pseudo anonymous, I would say you can make bitcoin as anonymous as you need. Just be careful buying bitcoins face to face in the US using localbitcoins. The newest fashion over there are undercover agents that are meeting people over localbitcoins and then arresting them and charging them. Freaking unbelievable! Is that for real? I would imagine that that would only be applicable to people in NY due to the new laws regarding Bitcoin... Right? I don't think so, just don't buy a lot at one time. Also be careful of people who will try to run with your money. Always to face to face transactions in a public place where there are lots of witnesses. |
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Are you sure it isn't just that the /cdrom mount point is only for root? How about changing the mount point to somewhere you know that you have access? Try making a folder in your home directory and mount the partition there.
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Hello everybody
When I install new bitcoin-qt, it take 1 week or more time to sync network
What way fast sync network more, like 1 day?
Thanks
There is no way to sync any faster. Just wait, and it will be synced. You only need to sync it once. |
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Just connect them normally and use RPC to get data from bitcoind. There are by default 4 rpc threads so you can have 4 concurrent requests. This can be increased as needed. |
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Hello everybody!
When I use php connect with bitcoind via rpc
I must write user/password rpc in code
problem: when hacker hack code, they will get my bitcoin.
how can I hide connect rpc in code?
Make sure you setup the rpc so that both port 8332 is not available from the outside and that the rpc server only accepts connections from whatever ip the webserver is hosted on. (probably localhost) |
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1) Sure, that part isnt anonymous, but transacting bitcoin to bitcoin is anonymous, as it only provides the bitcoin adress.
It is actually pseudonymous, you sometimes can trace a bitcoin address to an identity, it is just very very very hard. What about those buys coins from exchanges where exchanges requires identification before you can buy bitcoins, isn't that already exposing your self that you are a Bitcoin user? yes, but sir_lagsalot was talking about bitcoin transactions, which can be traced back to an identity, just not very easily (in most cases). |
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1) Sure, that part isnt anonymous, but transacting bitcoin to bitcoin is anonymous, as it only provides the bitcoin adress.
It is actually pseudonymous, you sometimes can trace a bitcoin address to an identity, it is just very very very hard. |
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