Hello tspacepilot, from what i know the signed tx must be send --> and the return value of the will then be the txid or otherwise an error if the tx is invalid. #EDIT: below answer from shorena answers your question how to calculate the txid, without broadcasting. ca333 |
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Will definitely use this service again and (hopefully) might catch one of the 2015 design.
I received my Silver Wallet with gold trim today and i can't stop looking at it. They look very very nice!
The whole process was a pleasure. I paid upfront, and got tracking key very fast. Shipping from US to EU
was blizzard-fast and the packaging was very professional. I am overall very happy with this trade and would do business again.
I recommend Mitchełł and his team. HIGHLY TRUSTWORTHY!
again, thank you Mitchełł!
ca333
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Update: I received my beautiful gold trimmed silver wallet today! they look much better in person than on the pictures. i have #74!  thank you Mitchełł for the auction and the smooth transaction! |
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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-scannerSorry for all the questions, but what is your opinion on CoinBase API? Is that okay to use. I know of a few websites using this. Ask as much as possible. Its better to ask now, and to find a good solution instead of not asking and in the end risking users and your own time/money. I RECOMMEND you to ALWAYS USE OWN bitcoin enviroment when handling other users coins. Means your own deamon on your own server. Every API from those online wallets, exchanges, websites, etc. are centralized. You have NO CONTROL over the priv-keys which hold all the money. Its always the website owner who control it and sign your txs.. so if you use API of one of those site, and this site get hacked, all the money is gone.. Try to set this up on your own btc-infrastructure if other users coin are affected. If you need assistance for setup, server-securement (fail2ban, nginx, etc.), btcdaemon config, etc. ask us. We will help you! If you only need the btc payment-processing (so you want to accept btc for a service/product/etc) then maybe have a look on bitpay api if own btc-infrastructure is no option for you. But AGAIN, i always RECOMMEND OWN node in own infrastructureca333 |
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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-scanner |
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I am looking to have a site made similar to cashtocrypto.com for selling Bitcoins. The price of the bitcoin will simply track a major exchange like coinbase, and be set at a specific rate above spot. There will be no exchange of Bitcoins through the site. The Bitcoin will be sent manually once the payment has been confirmed. Please pm or post offers here
I am interested in your request. Could you please clarify some points: So you will be sending the bitcoins manually once the payment is confirmed (by you?). What kind of payment are you going to accept and what kind of currencies?? Will anything on the site be automated? thanks, ca333 |
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notice: maybe move this thread to altcoin-section if discussion is limited on altcoin. i extended topic to btc to provide you comparison. Until just a few days ago I believed one of the major misconceptions that alt-coins are a ponzi scheme but after stumbling over a few articles I have realized that alt-coins are a very real thing and believe that some form of crypto-currency could be a major part of the future. I might be a crypto enthusiast.
As far as I understand alt-coins are decentralized and immune to human manipulation of value because once the network of miners begins to grow there is no default server since the script that essentially is the bitcoin runns on every cpu in the network and will communicate with whatever miners that are available.
alt-coins (" alternative cryptocurrencies") are decentralized cryptocurrencies just like BTC. In fact most of alt-coins are forks ("modified copies") of btc or ltc. There are some 2nd gen coins which are more different. But many alt-coins are not "serious" and i do not recommend investing in those. If this is true then I do not understand how altcoins are updating their source code. since everything is decentralized how is the the network of an altcoin receiving updates? (bitcoin has a bunch of different source code versions.)
Obviously I haven't quite understood the concept. if it is a true decentralized p2p network I don't understand how it would know where to update from and doesn't the updating create a form of centralization to the alt-coin developer website?
I have tried for a few days to figure this out, but the more I read the more confused I get.
Any pointers on this would be much appreciated. I hate not understanding what's going on.
as for BTC: it always depend on the network and all the users and if something is trusted or not. So users only load btc-versions which are trusted (verified and signed by the btc-devs). The system ("network") is 100% decentralized. And not only
the network, but actually also the developers. Its not only 1 developer. Its many developer. They are spread over the world. Not only 1 developer have push privileges on github. So the development is also decentralized. as for altcoins: many altcoins have only one developer or small group of developers and mostly only 1 person which is pushing the commits and have the rights to do so. In this case this also means development is centralized. regarding the upgrade-process itself: So imagine it like any p2p client you use. As long the update is not containing hardfork, users can update their client anytime, which don't "affect" the network (except maybe new block versioning, new nodes, checkpoints, etc.). so you update your client, but the blockchain which is synced with all the p2p network is still existent and stay the same. So you update the client, not the client updates itself. regards, ca333 |
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ca333 has won with a bid of 0.28BTC. I totally forgot to bump this thread.
thank you Mitchełł for this great auction! I am very glad that i won!!! This is literally an unbeatable price! awaiting payment information. |
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Dont worry if you the btc to expired your btc will get back to your account just like mine but too long time. mine is 5 days before my btc came back... wait for 5 or 7 days if your btc will not came back just update here and we will help you...
Are you sure about this? If you send BTC to an existing address, i don't think it'll just come back because the addy is shown as expired. My guess about this situation would be: - you sent BTC to an existing address but didn't add sufficient fees. The transaction wasn't included in a block because no fees were added. You stopped transmitting the transaction, and the network forgot about it (so the BTC ended up in your overview again)
- you sent BTC to your own "expired" addy (not really expired, but it might give the impression of being expired when you're new to electrum). You didn't add enough fees, so it took 5 days to be included in a block and was shown under your own overview
I could be wrong about this, i'm only learning myself, but i guess that might explain the situation? It would only come back and not be accepted by majority of the miners if its a "bad" tx (insufficient fee, dust outputs, etc.). The case he describes is when the network rejects your tx and "forgets" it. And your second case...: - you sent BTC to your own "expired" addy (not really expired, but it might give the impression of being expired when you're new to electrum). You didn't add enough fees, so it took 5 days to be included in a block and was shown under your own overview
...would show him at least the balance (which would give the impression it "came back immediately" as he sent it to himself). So i think he sent it to somebody else, then it got rejected by network and came back. I had a similar situation. Took 2-3 days. |
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closed
Hello community,
i need 10 EUR paysafecard and will pay with BTC.
rate: @preev +5%
thank you,
ca333
newbies and insufficient trust members ONLY with ESCROW
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I am on windows I used multibit
Hit Win+R, it opens the run window, enter %APPDATA% and click "ok" the explorer will open at a certain folder which should contain one named "Multibit". In this folder you should find your wallet files. Uninstalling the wallet does not remove these files. +1 exactly follow this instructions from shorena. And then just import the wallet-files into Multibit. You can do this inside Multibit. |
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Hello,
It's the first time I use Electrum and I didn't notice that the address would automatically expire after one transaction...
I gave the same address for two transactions. And obviously it expired after the first transaction.
So I'm just waiting in vain for 2.6 BTC. Is there any chance to see them back?
Cheers
Electrum has all privatekeys you used stored. You can use the addresses again and again. If you want to look the list click on the tab " Addresses". thank you, ca333 |
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Don't do anything untill you analysed the situation!!!
Please provide more information: OS, wallet, reinstalled wallet?
#edit: also remember, when you now install new SW and the appdata of btc is deleted when you deinstalled it, then you have the risk to overwrite deallocated memory and to have no chance to recover. So better is to wait and analyse the situation.
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nice pieces! i bid 0.23 BTC
Thank you and good luck! Thank you Mitchełł! did i get it right? No matter which design the winner of the auction wants, the price will stay same, even when the gold edition is choosed?? (asking because I saw they are more expensive then the silver edt without gold trim) thank you, ca333 Yes. You can choose any coin you want and you'll pay the price you placed as a bid. So you could get a gold trim coin for a lot less. great! thanks for the info. i bid 0.28 BTC |
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nice pieces! i bid 0.23 BTC
Thank you and good luck! Thank you Mitchełł! did i get it right? No matter which design the winner of the auction wants, the price will stay same, even when the gold edition is choosed?? (asking because I saw they are more expensive then the silver edt without gold trim) thank you, ca333 |
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Yes! Now im getting configure it! Clock is 2 am in Finland Is it need graphical enviroment to run correctly? Now its loading something when i type bitcoind. I dont run graphical enviroment :I i am glad you solve it. yes this is normal in btc-world. sometimes it will be 5am.  - no you don't need graphical interface. You only run the daemon in command-line. (Its also better with NO GUI for the performance of raspberry) you can simply control with if the daemon is running (you will see process ID and some information). And with you see if everything is working correct and how many block already it synced. I needed 2 days for syncing. so have little patience. more information for bitcoind: https://en.bitcoin.it/wiki/Bitcoind |
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Almost all of the keys are empty, probably all of them are empty. The chance to find an address which contains any bitcoin at all is too small.
Not all of them are empty, I do believe that is a list of all addresses. Just dynamically generated when required. Correct this is a "list" of ALL addresses (but not stored anywhere), and yes each page is generated the moment it is requested, content is depending on page-number.. So one of the pages includes your BTC-address with your privkey.. |
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nice pieces! i bid 0.23 BTC
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