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Showing posts from September, 2018

Mining block are not accepted if BIP related values changed to 0 or 1

Mining block are not accepted if BIP related values changed to 0 or 1 I am creating own alt from LiteCoin source. So I have changed hashGenesisBlock , hashMerkleRoot , nonce , timestamp etc.Things are working fine if i don't make BIP34Height , BIP65Height , BIP66Height & BIP34Hash value to 1 .While doing mining using cpuminer generated hash/blocks are not accepting and that's why blocks are not getting generated/added. If I change that BIP( BIP34Height , BIP65Height & BIP66Height and BIP34Hash) values(not default which is litecoin values), that generated hash/block should be accepted from cpu miner or any other third party mining binary. I've tried by setting value to 0 & 1 both but same result things are not working as expected .. Here is log URL generated from mining : https://gist.github.com/adneerav/591e61657292e6c6561a26b69dc78870 If I don't change that BIP values things are working fine.Generated blocks are accepted to add.Please check log which is

Is there a documentation of the first altcoins timeline?

Is there a documentation of the first altcoins timeline? Meaning, which altcoin was created one, in a chronological order. It's interesting, from a historical perspective, to collect such an archive. https://ift.tt/2zGPMO8

can I run bitcoin core with public key only

can I run bitcoin core with public key only I'm looking a way for secure setup of web site that accepts bitcoin payments. Ideally I'd like to create wallet off-site and be able to deploy bitcoin core online with public key only that I believe should be enough to generate new addresses and watch for incoming payments https://ift.tt/2OnBtq0

Conf file is unresponsive/nonexisting

Conf file is unresponsive/nonexisting The file says it has no content(47 bytes to be specific) and there's no way to open and edit it. Anyone what I'm doing wrong. Mac operator* https://ift.tt/2NTdoYz

Best way to set up gpu mining rig?

Best way to set up gpu mining rig? Before you yell at me for how bad gpu mining is, its the only thing within my budget right now. But Im not sure what equipment to use, or how to set it up. I know I need to set up my mother board and power supply below the GPU rack up top, but how can I fit as many GPUs as possible? I was thinking of using a riser board with multiple slots, but Im not sure if that would work. Anybody mind helping me out here? https://ift.tt/2QmEZhH

Can not indentify accounts

Can not indentify accounts I am trying to get balance of accounts and when running bitcoin-cli listaccounts I am getting the data look like this { "":0.81234545 } I wanted to know what is the "" and 0.81234545 and where my real addresses. Thanks! https://ift.tt/2QjkFO1

A Ponzi Scheme is Detected in Russia, the Central Bank Takes Measures

A Ponzi Scheme is Detected in Russia, the Central Bank Takes Measures The Central Bank of the Russian Federation has revealed a fraudulent financial system called Cashberry. The project was aimed at inducing people to invest their money in the scam scheme, offering highly lucrative returns on fiat and crypto investments. https://ift.tt/2zGVNdE

How verify p2sh spending transaction signature using public key with btcsuite?

How verify p2sh spending transaction signature using public key with btcsuite? I'm trying to verify inputs signatures in Go using Verify Signature script of package btcec. Decoding this p2sh spending transaction rawSpendingTxd := 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

USDT transfer at BTC address from binance exchange

USDT transfer at BTC address from binance exchange I am transfer USDT to BTC address by mistake but since last 3 month USDT missing .how I will take back in my account. Binance not help me for get back my USDT.or BTC. They r saying when your transection abnormal or cancel you contact us.since last 3 month I am reading these by binance. https://ift.tt/2OlP1SH

How to send bitcon with zero fee?

How to send bitcon with zero fee? When I try use electrum or other wallets I have error: the transaction was rejected by network rules.\n\n66: min relay fee not met How to send bitcon with zero fee? https://ift.tt/2N8BOrH

Is there any mobile wallet that allows to do Bitcoin Transaction with zero fee?

Is there any mobile wallet that allows to do Bitcoin Transaction with zero fee? When I try to make a transaction with Economic Fee mode on Bitcoin Android App.. Its imposes a minimum fee of 0.00005675BTC.. So is there any android app or computer bitcoin wallet (except Bitcoin-qt) that allows bitcoin transaction with zero fee? I am aware of the fact that Zero fee trasaction might take ling tike to get confirmed.. https://ift.tt/2IskgWP

How to find the Bitcoin addresses used to create a Multi Signature address

How to find the Bitcoin addresses used to create a Multi Signature address Assume we have a 2 of 3 multi signature address and we send some bitcoin to that address. Then we spend the funds from that address by signing and broadcasting a transaction. Just by looking at that transaction, can you tell the public keys whose private keys were used to sign that transaction? https://ift.tt/2zGjPFR

Is it possible to combine PoW with PoS by taking turns?

Is it possible to combine PoW with PoS by taking turns? I have read about cryptocurrencies and am very excited by many. I have read that one of the worries and constant debates is Proof of Work vs Proof of State with respect to securing the validity of the blockchain, especially within Ethereum. I wondered why we would not just combine the two. For example, the first block validated by PoW, second block by PoS, third by PoW, etc. As each block depends on the previous a 51% attack would be a lot more difficult and power consumption significantly reduced. Is there an obvious problem with doing that? https://ift.tt/2Re27jM

The Global's Most Idyllic Blockchain Tech Sandbox, Crypto in Caribbean Basin Offers Promising Options

The Global's Most Idyllic Blockchain Tech Sandbox, Crypto in Caribbean Basin Offers Promising Options The notion of a financial or tech sandbox, highly popularized over the last 10 years, is increasing momentum across the globe, especially as regulators try to put digital currency, Blockchain technology genies under thorough observation. For some regulators in great jurisdictions like the UK's Financial Conduct Authority (FCA) are majorly originating from positions of strength and as such, may facilitate innovations which "fit the mold" or slightly enhance status quo. https://ift.tt/2zGuBvP

Paying to one address using inputs from multiple addresses under same seed

Paying to one address using inputs from multiple addresses under same seed I am using bitcoin core and I was wondering. If I make a bitcoin payment using bitcoin-cli which has about 50 addresses registered to it. If the payment is for 1 BTC and I pay from the address A1 (let's use A1 instead of an actual address) but A1 doesn't have enough balance will it take money from other wallets automatically to help pay the set amount? If not then how can I make it so? Edit: I am using 'getnewaddress' when generating these other addresses. https://ift.tt/2NaRyKX

Transactions Uniqueness Verification

Transactions Uniqueness Verification From what I gathered, to process a bitcoin transaction I basically create the transaction object locally, add my signature generated with my private key, then send this to a public node for it to add it to the next block. However I do not understand what stops this transaction from being re-used. If I want to make another transfer to the same address for the same amount, it would end up with the same signature? So what stops someone from copying the raw transaction (with my signature) from a past transaction and trying to execute it again? How is bitcoin protected against that? https://ift.tt/2OXOdk0

Solar Flare wipes all hard drives... What happens?

Solar Flare wipes all hard drives... What happens? Imagine, for a moment, that a massive solar flare wipes out all hard drives on planet Earth. All hard drives are wiped clean and with them all records of the Bitcoin blockchain. Would we be able to recover? Is there some alternate backup of the blockchain? Do we hope that at least one computer is protected beneath ground? I assume everyone's personal wallets would be lost unless they used paper wallets. Certainly a big blow to the Bitcoin community. https://ift.tt/2DIeh1l

Energy to confirm one block with state-of-the-art hardware at current difficulty level

Energy to confirm one block with state-of-the-art hardware at current difficulty level An earlier answer claims it would burn around $2M worth of electricity to confirm one block using an ordinary CPU. See: Energy to confirm one block? Can anyone estimate what this figure would be for today's state-of-the-art mining hardware? E.g., suppose I am presented with a chain of 8 block headers with mining difficulty at or above current level. Without any other information, how certain could I be that they were generated by current blockchain network? How much would it cost to create a fake, ignoring equipment cost? https://ift.tt/2Qgokwb

Energy to confirm one block?

Energy to confirm one block? What is the minimum energy (or CPU operations) required for someone to confirm one block on their own, to launch a double-spend attack? How can I calculate this from the current difficulty or hashrate? https://ift.tt/2QkeGbQ

Best API to take payments?

Best API to take payments? For those that have used services like paybear and coingate, what is your experience with the software and any recommendation for a site that is looking to take these payments? I'm looking for something that is fast and scalable. On a side note, if it isn't relatively hard to code it, any resources to coding payment received detection on the blockchain? https://ift.tt/2zFsyYD

Zcash docs on T-Address Format, Transaction Format & Structure, Private key generation and public derivation

Zcash docs on T-Address Format, Transaction Format & Structure, Private key generation and public derivation I have been trying to implement Zcash in a wallet and I have issues with their documentations really lacking a lot. What's the format of T-Addresses ? Length ? Encoding ? Format of a Zcash transaction and it's structure ? How are Zcash transactions signed which functions are used ? How are private keys created ? How are public key derived from private keys ? For these questions what I'd like to know is which functions are used for these tasks. https://ift.tt/2QhxWH6

What needs to be done inorder to change difficulty?

What needs to be done inorder to change difficulty? I'm trying for a while to reduce difficulty of main network to do some experiments on transactions and maybe simulate some possible attacks.I came up to change nBits field in chainparams.cpp but it seems it is not enough and the new network didn't run properly. What else should I do exactly ? https://ift.tt/2QhNR82

What is required to list market data from cryptocurrency?

What is required to list market data from cryptocurrency? I am trying to create a cryptocurrency market capitalization list similar to coinchangelly.com . Where could I obtain their APIs and how do I list much more coins than others? https://ift.tt/2QjGfBV

How often does a typical miner refresh their candidate block?

How often does a typical miner refresh their candidate block? I realize that this is a general question with no "correct" answer, as every miner can operate differently. Having said that, I'd like to be able to display a list of transactions that would be considered a fair representation of the transactions in the memory pool that are poised to be mined . So far I have been: Using getblocktemplate to get the list of transactions. Refreshing the list when a new block arrives, or at 1 minute intervals . Using getblocktemplate seems logical, as I imagine the majority of miners would like to get the most amount possible in fees from their blocks. I'm then guessing that miners would want to refresh their candidate block at certain intervals to check for higher-fee transactions in the mempool. Is it likely that miners would be inclined to refresh their candidate blocks much more (or less) than every minute? https://ift.tt/2QloBOy

The World Blockchain Forum is Coming to New York on November 8

The World Blockchain Forum is Coming to New York on November 8 An industry-wide and cross-functional conference on trending blockchain innovations and the future of decentralized applications. https://ift.tt/2QjcFMT

Why Bitcoin uses UTXO model?

Why Bitcoin uses UTXO model? I know what it means. But I can't understand why Bitcoin decided to make such a model, where you have no balance, only unspent transaction outputs. And isn't the same thing as having the balance? I assume if you didn't spend coins, you have them in balance. What advantage does it have over a usual (non-UTXO) model? With comparison with other cryptocurrencies which has no UTXO, if possible, please. https://ift.tt/2xKTepJ

How can I check where my bitcoins have gone to in my app?

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How can I check where my bitcoins have gone to in my app? help I need to know where to go search my bitcoins after they entered my account on my bitcoin app...so far its two day still nothing showing.... https://ift.tt/2zDFNsM

Transactions not showing in Copay wallet until confirmed?

Transactions not showing in Copay wallet until confirmed? when i sent btc to my copay wallet, the transaction would show up before being confirmed, but wouldnt let you spend it. seems that isnt true anymore, anyway to have this happen again? havent found anything in settings https://ift.tt/2QhgYs6

STREAMITY: Purchase / Sale of NEO and GAS, Listing on the Exchange, as Well as Innovative Trade of BTC

STREAMITY: Purchase / Sale of NEO and GAS, Listing on the Exchange, as Well as Innovative Trade of BTC There are many ways to buy or exchange cryptocurrency for fiat money: exchange services, crypto exchanges, as well as exchanges through private individuals. Unprotected transactions and high commissions are the first thing that digital gold owners can face, as well as people who are just making their first steps into the cryptocurrency world. https://ift.tt/2xLzu5c

Blockchain.com passphrase pattern ?

Blockchain.com passphrase pattern ? is there any way to know blockchain.com passphrase pattern , I mean they use some words from the dictionary to give someone a passphrase , how would we know the exact wordslist they use ? https://ift.tt/2Iop27V

RPC Command to send from multiple accounts to one account (default - "") in same wallet

RPC Command to send from multiple accounts to one account (default - "") in same wallet I have small amounts in multiple accounts in the same wallet. I want to send all of them to default account (usually named as ""). Is their any RPC command available for this scenario? Thanks in advance https://ift.tt/2N5ZRYh

Is there a "print to file" parameter or its equivalent for bitcoin-cli; so that results from the daemon are recorded

Is there a "print to file" parameter or its equivalent for bitcoin-cli; so that results from the daemon are recorded Is there any way to "print to file" the queried results of the bitcoin-cli. This would be most helpful in my basic cross platform integration of a program I am making with QB64. https://ift.tt/2OjuRsA

Historical BTC data in JSON

Historical BTC data in JSON As of now, the only API I can find that serves historical data is https://blockchain.info/charts/market-price?timespan=60days&format=json . It only uses USD, and I need to serve non-USD data. My google-fu is failing me, does anyone know of an API that serves historical data for more than one currency? Preferably a currency I can specify as part of the API call. https://ift.tt/2NMuAPo

On a shared wallet, if one of the recipients deleted their wallets off their phone, is there a way to rejoin?

On a shared wallet, if one of the recipients deleted their wallets off their phone, is there a way to rejoin? We only had one 12 word backup for the main holder on their phone. The second person, on their phone didn’t get one(me). That I know of, I guess. But I deleted the wallet by accident. Now, is there a way to get back in there as I am the second co-signer and kind of need to have access to the wallet. The first person is trying to send me wallet invites, etc, but I really don’t get it. It’s not working nor do I have the knowledge of this app. I just know for sure he had set it up so both of us needed to agree to use it or spend it. Now, I don’t even have access to the wallet and we can’t figure out how to get that back. Are we out of luck? https://ift.tt/2QfLkeu

How to get Xtremcoin Orderbook data?

How to get Xtremcoin Orderbook data? Hi everyone about Xtremcoin I want to use orderbook api but I don't get any api from https://apiv1.xtremcoin.com how i get orderbook detail from xtremcoin Turkish Lira , Euro or Dolar? I try https://www.xtremcoin.com/api/order_book/btcusd this but i don't get any data need access or any apikey? thank you https://ift.tt/2OWg7wN

Is it secure to collect common public addresses under a wallet using BlockCypher Wallet API

Is it secure to collect common public addresses under a wallet using BlockCypher Wallet API I am working on an exchange platform with users having separate pair of public and private keys using blockcypher api. I encountered Blockcypher Wallet API , and it seems its a pleasant way of collating Set of Public Addresses to Query Together. For some reasons, i intend to add all new generated public addresses created by any user under a single wallet name (the site name) using the "Wallet API", this will come in handy in the case where by i need to filter all incoming transactions webhook to only the public addresses under the site name into a callback url. So i needed to confirm if this is a secure way to handle it. I would appreciate if an elegant way to handle this can be suggested. https://ift.tt/2NQ08DU

when does a transaction get registered / included in a block [migrated]

when does a transaction get registered / included in a block [migrated] I want to know when does a transaction gets registered in a block ? Is there any queue type of structure where the transactions get stored before getting included in a block by miner ??? As in let's say if i have transferred 1 eth to my friend and announce that transaction to the block chain, how much time will it take to get included in a block and block to get attached to the block chain ? And also on what basis miners select which transactions to include in the block, is it on the first come first serve basis ? And if they don't want my transaction to get included in the block they are about to mine then in that case what happens to my transaction and the amount of ether i have send to my friend ??? https://ift.tt/2OUgIPD

Solving Bitcoin core's 'ActivateBestChain failed'

Solving Bitcoin core's 'ActivateBestChain failed' I'm running bitcoin core version 0.16.2 on the Testnet and realized that it had stopped receving blocks after the 1414433 . I tried running bitcoin core with options -reindex and -reindex-chainstate without success. I have delete all the data and restarted syncing again, but ended up in the same problem PS: I am running in pruned mode What I've encountered in the debug.log is: 2018-09-28 16:43:38 UpdateTip: new best=00000000cb7df9801f21ccb4192844281d7da224d2213514050a8ad9a6d9ec7e height=1414432 version=0x20000000 log2_work=71.629388 tx=47735936 date='2018-09-27 03:27:30' progress=0.999747 cache=81.4MiB(531804txo) 2018-09-28 16:43:38 UpdateTip: new best=00000000210004840364b52bc5e455d888f164e4264a4fec06a514b67e9d5722 height=1414433 version=0x20000000 log2_work=71.629388 tx=47735938 date='2018-09-27 04:03:19' progress=0.999751 cache=81.4MiB(531807txo) 2018-09-28 16:43:38 ERROR: DisconnectTip(): D

Transaction in orphaned block question

Transaction in orphaned block question This is a theoretical question. Assuming that a transaction (TX_A) with me on the receiving end gets added to the blockchain, I should be able to spend the amount I received. So I go on and spend it on another transaction (TX_B). What if TX_A gets orphaned due to forks? What happens to TX_B? https://ift.tt/2Qimhb3

Install chrom on Asic

Install chrom on Asic I want to use antminer-s9 to mining from cryptotab site This site is much more than any pool give bitcoin Bot it doesn't have any pool . And just must use Chrome to mine Any one know how can I install chorom on Asic or a way to connect my antminer to this site? https://ift.tt/2R7wwQr

Luxembourg Seeks Legal Certainty for Blockchain Tech in Financial Transactions

Luxembourg Seeks Legal Certainty for Blockchain Tech in Financial Transactions Luxembourg is considering the formation of a national legal framework for the application of Blockchain in financial transactions. https://ift.tt/2IouPKv

Bitcoin's Big Move | Trillion Dollar Crypto Wallets | Tesla & Facebook Trouble | Meditation Thoughts

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Bitcoin's Big Move | Trillion Dollar Crypto Wallets | Tesla & Facebook Trouble | Meditation Thoughts 😀 Thank You For Watching! :D 🚩 Remember to subscribe and hit the bell "🔔" icon! -~-~~-~~~-~~-~- SUPPORT THE CHANNEL ► Patreon Sponsors (Private Telegram Group) - https://goo.gl/vpX5sW ► YouTube Sponsors - https://www.youtube.com/channel/UCdUSSt-IEUg2eq46rD7lu_g/join -~-~~-~~~-~~-~- MUST HAVE ► The Ledger Nano S Crypto Hardware Wallet: https://ift.tt/2nY4tYQ -~-~~-~~~-~~-~- ► Crypt0 Amazon Store: https://goo.gl/ybb9dw ► Crypt0 Merch: https://ift.tt/2khihd5 -~-~~-~~~-~~-~- 📬 Mail Me Something! Omar Bham P.O. BOX 451218 Los Angeles, CA 90045 United States -~-~~-~~~-~~-~- 🔥MORE CONTENT ► The "Crypt0 Plug Podcast" - https://goo.gl/PPHrCY ► The "Crypt0 Minute" YouTube Channel - https://goo.gl/P5Pmbm -~-~~-~~~-~~-~- 💻FOLLOW US ► Crypt0's News Official Site - https://goo.gl/mnWvPL ► Crypt0 Message Boards - https://goo.gl/YuBrTn ► Facebook - https

US Judge Rules to Bring Purported Crypto Phony Under CFTC Supervision

US Judge Rules to Bring Purported Crypto Phony Under CFTC Supervision A senior U.S District (Massachusetts) Court Judge, Rya Wickert Zobel, ratified on Wednesday, September 26, that the U.S. Commodity Futures Trading Commission (CFTC) may further push its supervision of all digital currencies. https://ift.tt/2OXW7dl

Blockchain & Bitcoin Conference Switzerland: Top Industry Leaders in Geneva

Blockchain & Bitcoin Conference Switzerland: Top Industry Leaders in Geneva On October 9, 2018, the international company Smile-Expo will host the second Blockchain & Bitcoin Conference Switzerland – large event about DLT and cryptocurrencies. The conference will unite top professionals from the DLT sphere, as well as investors, developers and market analysts. https://ift.tt/2R5IXfH

West Virginia to Apply Blockchain-Based Mobile App for Digital Voting

West Virginia to Apply Blockchain-Based Mobile App for Digital Voting Since the earliest inception of Crypto and Blockchain technology, one of the principal uses for the technology outside of monetary related transactions has been as a method for safe, digital voting. https://ift.tt/2NO0XNJ

Football Ticket & Crypto Con Games Rising Threats by Merciless Fraudsters - NTS Report Reveals

Football Ticket & Crypto Con Games Rising Threats by Merciless Fraudsters - NTS Report Reveals Phony Euro 2020 tickets, modelling and Crypto phony fraudulent deals are some of the rising threats posed by swindlers, consumers have been cautioned. https://ift.tt/2xTUmXe

The Entire History of Bitcoin

The Entire History of Bitcoin Bitcoin’s magical growth rate in 2017 was one of the best financial stories ever. From humble beginnings in 2009 to a price of $19,000, the cryptocurrency defied all odds. But in as much as bitcoin has become popular, its history is riddled with mysteries and tragic stories. The financial investment has created billionaires and made some poor. https://ift.tt/2Ok5OFR

Ethereum Classic is About to Have its Biggest Breakout Ever

Ethereum Classic is About to Have its Biggest Breakout Ever Ethereum Classic (ETC) is the coin to give a load of attention to during the present market correction. ETC investors have been gripping firmly to their coins and multiplying more during the correction. The ETC investor landscape isn't a big one at this moment, but it is definitely one of the most highly educated and well informed and painstaking ones. https://ift.tt/2QcMurp

Set transaction fee

Set transaction fee I am using bitcoind api to send trasnactions from my account to user accounts. I have found ,that the sendtoaddress method use address,amount and comment to send trasnaction, but I need to set comission for each trasnaction. Please help me to solve this problem! https://ift.tt/2Is8X17

Generating private key/bitcoin address based on a "password"

Generating private key/bitcoin address based on a "password" Since the private key is basically a random large number, would I be able to pick a password and have that converted into an address? For example: pick "mysecretpwd". Have it sha256ed, obtain a large integer that is the private key from which I can easily derive the public key and the bitcoin address. Then for spending any funds received at that address I only need to remember "mysecretpwd", no private key storage on paper, mnemonics or anything, basically the funds are stored in my brain. What are the security/privacy implications? https://ift.tt/2xHGJLE

What is needed to list crypto currency in exchanges?

What is needed to list crypto currency in exchanges? I am trying to create a cryptocurrency exchange like coinchangelly.com . Where could I get their APIs and how to list much and more coins as compared to others. https://ift.tt/2xXmj0f

15 day funds hold on Coinbase

15 day funds hold on Coinbase I've linked my Copay wallet to my Coinbase account. I wasn't aware of the 15 day hold from my bank account on the funds I purchased. Has anyone had that happen before? If so, did it take the full 15 days or did it clear sooner than that? Also, my Coinbase account shows that my Copay account is connected to it when I'm logged in on a computer but not the app. And the Copay app doesn't show my Coinbase account is connected to it. I've completed the authorization process and I still don't see my Coinbase on my Copay app. https://ift.tt/2NIWiN3

When does a blockchain fork resolution happen?

When does a blockchain fork resolution happen? I understand that the forks are resolved by largest proof-of-work etc. but when do the miners decide to resolve a fork? Is it a network consensus or do each individual miner resolve at their own pace? https://ift.tt/2xHrjac

Cryptos Are On A Tear! | 1Broker Seized By FBI | Coinbase Bundle | Google Store Cryptojacking | More

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Getblockchaininfo showing "segwit":{ status: "failed"

Getblockchaininfo showing "segwit":{ status: "failed" I have created a clone of Bitcoin for educational purposes. The network seems to be running, I changed prefixes, ports and other parameters and everything seemed fine. However, most (but not all) sent transactions sit in the mempool and do not actually get into the blockchain. I think it may be because of the version of the node. Here is what I get when I use getblockchaininfo (I believe it is related to the problem of nodes ignoring transactions in mempools). Can you please help figure this out? "chain": "main", "blocks": 16208, "headers": 16208, "bestblockhash": "00000000eed0a707848a1e3d47a3dfb830d6649ccefb24e3a324cf8092841401", "difficulty": 0.09980506525745092, "mediantime": 1538075712, "verificationprogress": 4.737279318312884e-05, "initialblockdownload": false, "chainwor

copy transactions not showing until confirmed?

copy transactions not showing until confirmed? when i sent btc to my copay wallet, the transaction would show up before being confirmed, but wouldnt let you spend it. seems that isnt true anymore, anyway to have this happen again? havent found anything in settings https://ift.tt/2N5FCKn

Why haven't a large number of cryptocurrencies copied Primecoin's mining algorithm?

Why haven't a large number of cryptocurrencies copied Primecoin's mining algorithm? According to my understanding, generating an ever-growing list of prime numbers benefits mathematics and society in some mysterious way. Given this, why have more recently created proof-of-work focused coins largely ignored Primecoin's mining algorithm in favor of Bitcoin's, which yields no epiphenomenal benefits? https://ift.tt/2R4wUPF

Why was this transaction accepted?

Why was this transaction accepted? In testnet, txid:fb7a8658ec015133e36e2cf7ddf7e8c887c3a5becec2f30f24ebfe43e72f4b59 transaction has two inputs. This two inputs indicate the same txid and vout, 6a08723bc717e1ddf91fa60fde25784ef66952e8687f3bffe391fc2c819dbfd9:1. Is this a double spending? https://ift.tt/2OgcIMo

GoByte Releases Free Service for Merchants to Work with Cryptocurrency

GoByte Releases Free Service for Merchants to Work with Cryptocurrency The Malaysian open source project GoByte has proudly released its new, free of charge service that will allow online merchants, worldwide, to accept multiple cryptocurrencies for their commercial payments. The name of the much anticipated service is “GoByte Pay” and, besides its use as a gateway for receiving and processing cryptocurrency payments, it can serve as a very convenient tool for sending and administrating invoices to individuals and businesses. GoByte Network will collect only a tiny commission for its services, while the integration of the service at the commercial sites will be free of charge. https://ift.tt/2Ikg8Iz

Maltese Crypto Law is Ready to Come Into Force on November 1, 2018

Maltese Crypto Law is Ready to Come Into Force on November 1, 2018 The Maltese government is creating its own Crypto and Blockchain tech regulation in advance of the Malta Blockchain Summit, driving towards its primary goal of becoming the world hub for Blockchain-based innovations. https://ift.tt/2QdAO7x

ABCC Announces Launch of Its Long-Awaited Digital Asset Exchange, ABCC Cloud

ABCC Announces Launch of Its Long-Awaited Digital Asset Exchange, ABCC Cloud The Singapore-based trading exchange platform ABCC, has announced that its all-new digital asset exchange is launched on 18th Sep. https://ift.tt/2DyoQE3

The Future of Money will be Discussed at the New Shift Conference

The Future of Money will be Discussed at the New Shift Conference On 26th & 27th of November in Zagreb, Croatia, delegates from around the world of FinTech will talk about the newest trends in Payments, Insurance, Lending & Blockchain. https://ift.tt/2DxRFRa

WCDC is Making Crypto Convenient for Daily Use

WCDC is Making Crypto Convenient for Daily Use If you have heard about cryptocurrencies, you’d have thought that probably they are some complicated kind of currency used only by traders, miners, programmers and tech geeks. Your thoughts could not be farther from the truth, because, believe it or not, cryptocurrencies are for everyone – you and me – and have the ability to make our lives easier and our daily payments convenient and fast. All we need is to find the right tools to unlock the immense capabilities of digital currencies. https://ift.tt/2xQOcak

Bitcoin Halvening Alludes Market Correction Ended

Bitcoin Halvening Alludes Market Correction Ended Bitcoin has experienced days of tangled fluctuations since the commencing of this correction. However, the last few months have registered more downwards trend and less assaulting moves. To some people, this might be a significant indication that Bitcoin's correction is finished and that the price is refreshing before starting a fresh cycle. https://ift.tt/2N68XV3

Blockchain Based Betting: New User-friendly Approach to Gambling

Blockchain Based Betting: New User-friendly Approach to Gambling Today the gambling industry reaches $50 billion and this number continues growing to make it one of the most prospective industries in the future. https://ift.tt/2OjSUaI

How can i get in touch with a miner

How can i get in touch with a miner Please can someone help me get in touch with a miner, i am trying to recover my bch sent to a segwit btc address. https://ift.tt/2DxUqC0

Why accepted this transaction?

Why accepted this transaction? In testnet, txid:fb7a8658ec015133e36e2cf7ddf7e8c887c3a5becec2f30f24ebfe43e72f4b59 transaction has two inputs. This two inputs indicate the same txid and vout, 6a08723bc717e1ddf91fa60fde25784ef66952e8687f3bffe391fc2c819dbfd9:1. Is this a double spending? https://ift.tt/2DwELTz

How many weight units does an input use?

How many weight units does an input use? What is the weight unit cost of an input? And can you batch/aggregate the inputs or is it linearly growth when you add more inputs to a tx? https://ift.tt/2zzsWbd

Funakoshi Equihash 144,5 CUDA Miner v4.10 For Windows and Linux

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Funakoshi Equihash 144,5 CUDA Miner v4.10 For Windows and Linux Funakoshi’s Equihash 144,5 CUDA miner is arguably the fastest Equihash 144,5 Nvidia GPU miner available at the moment for both Linux and Windows users with the software constantly being developed and improved as you can see from the short timespan between the new version updates. The latest version 4.10 once again bumps up the hashrate you get mining Equihash 144,5 crypto coins such as Bitcoin Gold (BTG) that uses that particular variation of Equihash. This miner does not seem to be getting that much attention like other Equihash GPU miners, but that doesn’t mean that it does not outperform them, it is just that the software is focused on a single algorithm only while other alternatives usually support multiple algorithms. Funakoshi’s miner is a closed source one and comes as pre-compiled binaries for Windows and Linux with a built-in developer fee of 1.5%. – For more information and to download and try the latest versio

New T-Rex 0.6.10 Nvidia GPU Miner For Windows and Linux

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New T-Rex 0.6.10 Nvidia GPU Miner For Windows and Linux New update to version 0.6.10 for the T-Rex Nvidia GPU miner that brings extra performance for a number of supported algorithms, along with some new features, bug fixes and even some useful cosmetic changes. The new T-Rex 0.6.10 should get you an extra 1-2% hashrate increase in X16r, X16s, X17, C11, Bitcore, BCD and Sonoa algorithms over the previously released version T-Rex 0.6.6 . Among the new interesting features is the added functionality for setting failover pools in the command line by just adding extra pool parameters like with a single pool, the other useful thing to note is the miner uptime getting displayed now as a part of the stats reported by the miner. Of course there are a number of other new features that might be useful for some people, so do check the miner help when you download it. Do note that the T-Rex is a closed source miner with 1% development fee built-in. Also make sure you have a recent video driver in

Benchmarking on Hyperledger Fabric

Benchmarking on Hyperledger Fabric Is there any public benchmarking code and results for Hyperledger Fabric v1.0 blockchain? IBM claims a transactions rate of 3500 tps, but I am not able to find any public code of the benchmarking experiments. Paper link: https://arxiv.org/abs/1801.10228 https://ift.tt/2xGIOY5

Looking for old bitcoin

Looking for old bitcoin I briefly ran a node on my Mac in mid to late 2012/early 2013, but didn't understand it at the time and let it go. Is it possible that I still have bitcoin on my computer from that installation, if so, where would I look? https://ift.tt/2xQFMzR

How exchanges generate transactions for all cryptocurrencies and send it to their network nodes?

How exchanges generate transactions for all cryptocurrencies and send it to their network nodes? This is an important question for me, I know some Bitcoin wallets like blockchain.info are a Full Node, but exchanges which support so many coins, how do they create transactions per cryptocurrency? do they have a full node client for per cryptocurrency? Just Bitcoin needs 170 GB space disk! Are exchanges using third-party servers and apis? https://ift.tt/2Ocv80y

How is Merkle path derived or calculated?

How is Merkle path derived or calculated? How is Merkle path calculated? I am looking for a detailed algorithm rather than a quick one liner for this so I can implement it. https://ift.tt/2N4mTPs

Bitcoin protocol allows a chain to be undone by a longer chain

Bitcoin protocol allows a chain to be undone by a longer chain In Mastering Bitcoin, page 196, it says "While the protocol always allows a chain to be undone by a longer chain and while the possibility of any block being reversed always exists, the probability of such an event decreases as time passes..." How and when will a chain be undone? How and when a block be reversed? Does Bitcoin core actually allow/support such operations? https://ift.tt/2DvpSkc

RPC command sendfrom is giving Transaction too large error

RPC command sendfrom is giving Transaction too large error I made discord bot for fun with tips, soak and rains of altcoin. When I try to send large amount through the same bot. It is giving me "Transaction too large" error. I found the reason here: transaction creation failed I need help with solving this issue. Can someone help me? Thanks in advance https://ift.tt/2NF2GES

For bitcoin core, in class CAccountingEntry, what's the meaning of some variables?

For bitcoin core, in class CAccountingEntry, what's the meaning of some variables? When I read the bitcoin core source code, I don't understand the meaning and how to use those variables: int64_t nTime; std::string strOtherAccount; mapValue_t mapValue; uint64_t nEntryNo; std::vector _ssExtra; (private one) Could anyone help me out? Thanks https://ift.tt/2zvT2f3

Permissioned blockchains on EVM: are these private ledgers os it all on ETH main net?

Permissioned blockchains on EVM: are these private ledgers os it all on ETH main net? Private blockchains using EVM: is this really the equivalent of the library of tools in hyper ledger or do these blockchains run on the public main net? https://ift.tt/2N3y6zQ

Get Bitcoin Wallet balance with Python

Get Bitcoin Wallet balance with Python On a tutorial in Youtube it uses pybitcointools . Upon searching it's github repository, I have found that it was not maintained anymore. Are there any alternative to this library which can get wallet balance? Thank you. https://ift.tt/2N4fhMT

Ardor Conversational Wallet

Ardor Conversational Wallet Any idea what it would take to build a conversational wallet for basic interactions with Ardor accounts through a chat bot and what the potential risks are? Will also appreciate any possible code repo dealing with this. Thanks. CryptAIVR https://ift.tt/2DIvoQX

Miracle Tele Announces Details of the TELE Token Sale to Offer the Lowest Mobile Call Rates to Consumers

Miracle Tele Announces Details of the TELE Token Sale to Offer the Lowest Mobile Call Rates to Consumers Mobile virtual network operator Miracle Tele has released details of its’ ongoing Token Sale, where funds raised will be used to create a decentralized mobile network services that disrupts the mobile network industry, and hand power back to the consumer. https://ift.tt/2Q9OKzt

Bakkt Declares its First Bitcoin Futures Contracts, Launch Scheduled for November

Bakkt Declares its First Bitcoin Futures Contracts, Launch Scheduled for November In a key twitter proclamation, the team at the highly anticipated Wall Street company of Bakkt acquainted the Cryptocurrency and investing group of its initial physically fixed Bitcoin (BTC) futures contracts. https://ift.tt/2OdvjbD

Price Analysis: Major Cryptocurrencies Go Up as Google Lifts Its Ad Ban

Price Analysis: Major Cryptocurrencies Go Up as Google Lifts Its Ad Ban Cryptocurrency price trend turns bullish as good news hits the market. Major coins gain in price with XRP increasing by 21.53%. https://ift.tt/2zwlIEV

IBM, Walmart are Considering Rolling out the First Blockchain-Based Food Security Solution

IBM, Walmart are Considering Rolling out the First Blockchain-Based Food Security Solution US-based Walmart Inc., one of the world's biggest retail corporations, has purportedly been creating a Blockchain-based food security program in collaboration with IBM. Walmart will need all of its outlets which supply leafy green vegetables to note down their sales info on its proprietary Blockchain-activated solution by September next year (one year from now). https://ift.tt/2NGQuDv

Cryptojackers Penetrate Google Play Once More

Cryptojackers Penetrate Google Play Once More As revealed in a report from SophosLab's Pankaj Kohli, Google Play is spreading malevolent applications posing as games, educational instruments or system utilities but which actually use your Android gadget to mine digital currency. https://ift.tt/2zwe0L6

Google to Lift Cryptocurrency Ad Ban in October

Google to Lift Cryptocurrency Ad Ban in October Google is going to update its cryptocurrency-related advertising policy and lift its ban imposed back in March this year. However, ads will work only in the USA and Japan for now. https://ift.tt/2DtoQoW

New lolMiner 0.5 AMD and Nvidia OpenCL Multi Equihash GPU Miner

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New lolMiner 0.5 AMD and Nvidia OpenCL Multi Equihash GPU Miner GPU miners of Equihash-based altcoins might want to check the latest lolMiner 0.5 – an OpenCL miner for both AMD and Nvidia GPUs that supports Equihash 144.5 (ANON, ASF, BTG, BTCZ, LitecoinZ, HeptaCoin, Safecoin, Snowgem, ZEL), Equihash 96.5 (Minexcoin), Equihash 192.7 (ZERO, Genesis, SafeCash) and the newly added Equihash 210_9 (Aion). The most interesting thing in the new version is the addition of Equihash 210_9 (Aion) support, though there are of course multiple fixes and improvements applied as well. The new version comes with complete rework of all GPU algorithms for both stability and speed and this also results in the memory footprint of the algorithms getting lower, so 144/5 is now fitting to 2.2 GB and thus works on 3 GB video cards and 192/7 is now close to 3GB and should work on any 4GB video card fine. The new 210/9 (AION)uses only about 800 MB of video memory. You can find the full changelog of the lolMiner

Crypt0's News LIVE! - September 26th, 2018

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Crypt0's News LIVE! - September 26th, 2018 😀 Thank You For Watching! :D 🚩Remember to subscribe and hit the bell "🔔" icon to get notifications as soon as I upload a new video or start a live stream! 🎩►Support Us On Patreon To Get Access To Our Exclusive Private Telegram Chat Group: https://goo.gl/vpX5sW ►Join Our YouTube Channel Membership & Get A Special Emoji To Stand Out During Our Livestreams: https://www.youtube.com/channel/UCdUSSt-IEUg2eq46rD7lu_g/join 🔥🔥 Join Our NEW Facebook Group! https://ift.tt/2NeEpVc ___________________________ Any Donations Are Really Appreciated! ►💓Donate Ether and Ethereum-Based (ERC-20) Tokens: 0x1466032B4F0F13910DA35B16371807428CB40714 ►💓Donate Bitcoin: 3JKQycXHdD5yqSRTf5VabM28Ff9AfXYcJD ►💓Donate Using Paypal: https://goo.gl/7m1X4Z _____________ 🚩🚩MUST HAVE ►The Ledger Nano S Crypto Hardware Wallet: https://ift.tt/2nY4tYQ ___________________________ 🎁FREE STUFF ►The Brave Browser (Fast Browser That Will Pay You In Tokens I

Should I run crypto node for my trading platform?

Should I run crypto node for my trading platform? I wanted to create a cryptocurrency trading platform where people can deposit cryptocurrency and trade them with other altcoins and finally withdraw it. Tell me do I need to run full crypto node to write transactions on blockchain while deposit and withdrawal? https://ift.tt/2Q9ot4q

Bitcoin price and other cryptocurrencies price

Bitcoin price and other cryptocurrencies price Why is bitcoin prices so high as compared to other cryptocurrencies like ethereum? what makes Bitcoin so special from other cryptocurrencies? https://ift.tt/2N3RegP

How does hardware wallet store multi_currency?

How does hardware wallet store multi_currency? I want to design a hardaware wallet such that store multi_currency. How i can use multi address to spend or store funds? https://ift.tt/2NDU9SK

Ardor: defining fee & bundler question

Ardor: defining fee & bundler question let's suppose I send this request to the blockchain: "requestType=transferAsset&secretPhrase=blablabla&chain=ignis&asset=blablabla&recipient=ARDOR-blablablablabla&quantityQNT=1000&feeNQT=1000000&deadline=60" how does it work with the bundlers? I mean I set there a feeNQT that is 1000000 but not sure if that has to match an existing bundler rate or if that lets me bundle my transaction. Thanks https://ift.tt/2OQZHG6

How to set up a gateway node?

How to set up a gateway node? I have two nodes running in my local machine. one public facing and another connected ONLY to the public facing node. I ensure they are whitelisted and in different ports. the nodes connect just fine, but for some reason my "hidden" node is not syncing. The data transmitted it and the public fancing one is just a few KBs. If i run it on regtest, generating blocks and sending txs happen basically instantly, so that works fine. Whats going on in mainnet that it doesnt allow it to sync? Is there something i need to configure? https://ift.tt/2OQYLS5

Does running pruning node make the initial sync faster?

Does running pruning node make the initial sync faster? Does running bitcoind with -prune option make the initial blockchain sync faster or not? I know it makes it smaller on disk, but is it faster? I keep reading conflicting information online - some state that it is quicker because you need less disk operations, some state it is about the same. https://ift.tt/2Ofz2We

Blockstream half-a-puzzle - having trouble verifying signature

Blockstream half-a-puzzle - having trouble verifying signature The https://blockstream.com/puzzles/half-of-a-puzzle/ link gives as the first example: Address: 13yaSqGNDzt1mNW4vrKM9CvD46cTavNabF Message: "There is nothing too shocking about this signature" PublicKey: 02000000000005689111130e588a12ecda87b2dc5585c6c6ba 66a412fa0cce65bc Signature: ffffffff077b7209dc866fbfa0d2bf67a0c696afffe57a822e 2ba90059a2cc7abb998becb4e427650e282522bf9576524665 301b807c0e3194cf1e6c795a0cf7 So: from fastecdsa.ecdsa import Point from fastecdsa.curve import secp256k1 G = secp256k1.G N = secp256k1.q def verify(z, sig, pk): temp = pow(s, N-2, N) u = z * temp % N v = r * temp % N return (u*G + v*pk).x == r from bitcoin.signmessage import BitcoinMessage message = BitcoinMessage("There is nothing too shocking about this signature") m = z = message.GetHash().hex() # 0xf5c93ce41555a349f6114e99fd60060bf01e0ac952ff6bbb564713ea326e47ed r = 0xffffffff077b7209dc866fbfa0d

Where is the wallet account data stored?

Where is the wallet account data stored? Saw the duplicate question "What is saved in wallet.dat exactly?" and found they not say anything about account. I guess the wallet account data should stored in wallet.dat too, am I right? https://ift.tt/2O9MLho

Solo Mining Altcoin (Litecoin Fork) with AMD Miner

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Solo Mining Altcoin (Litecoin Fork) with AMD Miner I'm using CgMiner with GPU support, and I am having issues getting the computer to mine. I am able to mine using CPU miner, and CCMiner on other computers with the same .bat file settings, but with CGMiner, I can't use the same settings. This is the .bat file I have for CGMiner: setx GPU_MAX_ALLOC_PERCENT 100 setx GPU_USE_SYNC_OBJECTS 1 cgminer -o http://localhost:9332 -u tVsdWJS59bEyiuwWMbZpoZ9j8ycAcVQCgx -p x pause So, I'm trying to mine to the wallet directly, the coin I am mining does not have any pools yet. (-u is wallet addr) and (-p is just x) So, what do I need to add to the config file to get the miner working with the wallet. I included the screenshot of what the CMD says when I try to run the file. https://ift.tt/2xFyKhV

unable to route payment to destination: TemporaryChannelFailure

unable to route payment to destination: TemporaryChannelFailure Keep getting this error following attempting to pay an invoice. root@ubuntu-s-1vcpu-2gb-nyc3-01:~# lncli --network=testnet payinvoice lntb50n1pd65u8fpp5y0dwjcn6uhg05sla3djsa7h483nk07m5fs7v3qmnkcn37fq7n68qdqqcqzys98h745eywzuxcfa6c4avku3xzwxvjmfuvp3qe7r0ejnzt50vz3g565h83k56rz0l2v05575aj8x8738g2nnnm0zm26rgtg209ze2l0qp5gkdlc Description: Amount (in satoshis): 5 Destination: 0206b792e8b1bc1642c96d6e0a9abfe8d848355a51de27a035402358998ddb4c68 Confirm payment (yes/no): yes { "payment_error": "unable to route payment to destination: TemporaryChannelFailure(update=(*lnwire.ChannelUpdate)(0xc00056b180)({\n Signature: (lnwire.Sig) (len=64 cap=64) {\n 00000000 af 2d cf db 50 97 e4 df b4 d2 11 65 09 ba 8e fe |.-..P......e....|\n 00000010 ad 36 33 c9 73 f2 53 01 25 12 2d 93 45 fd 41 27 |.63.s.S.%.-.E.A'|\n 00000020 76 e3 7d a7 ff 96 ae 6a 64 c7 45 cb d5 a6 0e 52 |v.}....jd.E....R|\n 00000030 78 a3 2

About Nbitcoin NodeBehavior

About Nbitcoin NodeBehavior We wrote our transaction listener and we were implement the NodeBehavior class. But when I update version of NBitcoin v3.0.0.60 to v4.1.1.46 I can't use the NodeBehavior. Because Nbitcoin cannot support to Protocol.Behaviors. What can I do? Are there another auxiliary class? Or can you suggest me another way for listen to transactions ?? Thank you for now. https://ift.tt/2QXRaCv

How much Bitcoin is needed to start a Lightning node?

How much Bitcoin is needed to start a Lightning node? I've never used Lightning but can someone recommend how much Bitcoin I need to fund a Lightning node? I will be using the Eclair client. Thanks https://ift.tt/2Q4Vu1y

👌 Google Crypto Ads | BAKKT Update | Mt. Gox Update | Japan FSA | XRP Bull or Bear | BTC Scrabble

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👌 Google Crypto Ads | BAKKT Update | Mt. Gox Update | Japan FSA | XRP Bull or Bear | BTC Scrabble 😀 Thank You For Watching! :D 🚩Remember to subscribe and hit the bell "🔔" icon to get notifications as soon as I upload a new video or start a live stream! 🎩►Support Us On Patreon To Get Access To Our Exclusive Private Telegram Chat Group: https://goo.gl/vpX5sW ►Join Our YouTube Channel Membership & Get A Special Emoji To Stand Out During Our Livestreams: https://www.youtube.com/channel/UCdUSSt-IEUg2eq46rD7lu_g/join 🔥🔥 Join Our NEW Facebook Group! https://ift.tt/2NeEpVc SOURCES ►Bitcoin Enters the Scrabble Lexicon - https://ift.tt/2Ijd9jC ►Mt Gox Trustee Has Sold $230 Million in Bitcoin, Bitcoin Cash Since March - https://ift.tt/2pAZP1a ►Japan FSA raps hacked crypto exchange over lack of details on $62 mln theft - https://ift.tt/2QUY4Zv& ►Update to Financial products and services policy (October 2018) - https://ift.tt/2NANCbk ___________________________ Any Donatio

Crypt-ON: Trust on the Blockchain

Crypt-ON: Trust on the Blockchain "(Cryptocurrency) lacks a lot of features. But it has this one feature that never existed before, and that’s trust. You don’t have to trust the government or Twitter and Facebook, or the other people even on the network. You just have to trust math." – Ben Horowitz, co-founder of Andressen Horowitz investment fund. https://ift.tt/2zsUfDU

What is happening when a channel is pending?

What is happening when a channel is pending? What is happening when a channel is pending when opened? How long does it usually take? To open a channel with a node you're already connected to you don't need to get consensus from all the other connected nodes (as you would if you were sending a transaction on chain) so why the wait? https://ift.tt/2Iet4j3

Bcoin: Trouble With bitnodes Help!

Bcoin: Trouble With bitnodes Help! Hi i got a trouble on my bcoin node and im very confused i followed the instruction on this page . http://bcoin.io/guides/install-linux.html . but when im going to verify my node in bitnodes it gives me this error "Request was throttled." if someone can help ty https://ift.tt/2QXUgXq

BTC FocalPoint: Weighty Bullish Signal on 1W Chart, a Repeat of 2017 Late Inrush Increase?

BTC FocalPoint: Weighty Bullish Signal on 1W Chart, a Repeat of 2017 Late Inrush Increase? Bitcoin has removed the pessimism out of a big pennant in the past 24 hours, as several sellers fight to maintain Bitcoin below the major $6,800 resistance level above. In the absence of any harmful news and with a significant fall in BTC/USD lows on the futures market, we can surmise that the 2.1% fall from Sunday's Sept 23 close is a small manipulative trend. https://ift.tt/2pBM5DD

required number of bitcoin to start a lightning node

required number of bitcoin to start a lightning node I've never used lightning but can someone recommend how many bitcoin i need to fund a lightning node. I will be using the eclair client. Thanks https://ift.tt/2Q6cKU3

Python code to recover private key from public key [migrated]

Python code to recover private key from public key [migrated] Helllo, I would like to use this code to generate/recover my private key, I'm using Python 3.6 and installed ecdsa package but how should I edit the code with my public key? I'm quite new to python, tried some things but I get the following errors.. NameError: name 'addr' is not defined TypeError: 'NoneType' object is not iterable IndentationError: unexpected indent (<-- I have many of this error) Do I need anything else to download and install? I'd appreciate for any kind of help! https://ift.tt/2DpQkMa

What is a Bitcoin ETF and how Does it Influence the Digital Currency Market?

What is a Bitcoin ETF and how Does it Influence the Digital Currency Market? A wide range of institutional investors has recently shown interest in the rapidly developing blockchain area. However, the fintech has suffered a great variety of blows in the form of Bitcoin ETF application rejections from the U.S. SEC. https://ift.tt/2pBQq9W

Ireland Launches €5M Project Focusing on Blockchain & Other Innovative Tech, it Will Run Until 2022

Ireland Launches €5M Project Focusing on Blockchain &amp; Other Innovative Tech, it Will Run Until 2022 On Friday, September 21, this year, the Irish government rolled out a €5 million financial technology (fintech) project aimed at researching and developing solutions that are associated with blockchain tech for a 5-year period. The project is dubbed FinTech Fusion and will be handled by the ADAPT Centre for Digital Content Technology. https://ift.tt/2zsTb36

VegaWallet – Bringing Mobile Crypto Payments to the Masses with POS

VegaWallet – Bringing Mobile Crypto Payments to the Masses with POS VegaWallet, “The Complete Cryptocurrency Platform” will provide businesses and consumers with real-world applications for crypto payments. https://ift.tt/2xOTrHB

Opera Launches its Desktop Browser (Only to Testers for Now)

Opera Launches its Desktop Browser (Only to Testers for Now) Reverting to its promise from last month (August), Opera is eventually launching a desktop version of its specialized and distinct browser with a built-in digital currency wallet but only to a chosen class of beta testers. https://ift.tt/2zsYUWI

Create wallet address on user registration for trading platform

Create wallet address on user registration for trading platform I am creating a crypto-trading platform . I wanted to know how to create wallet address dynamically for all new registered user and also create new address for every transaction. https://ift.tt/2Q57WhJ

BCH Send transaction failed: Missing inputs 25

BCH Send transaction failed: Missing inputs 25 I am using Bitcoin Cash JS to create a transaction, and my code is as follows: let BITBOXCli = require('bitbox-cli/lib/bitbox-cli').default; const explorers = require('bitcore-explorers') const insight = new explorers.Insight('https://test-bch-insight.bitpay.com') let BITBOX = new BITBOXCli(); let txb = new BITBOX.TransactionBuilder('testnet'); var To = 'mkiuwbSQQVxMvvbBcYEKUdZgJfURhu3hrW' var from = 'mvStb7hPtDCL8dmyifPGcYTuToVzf7ajTb'; var bch = require('bitcoincashjs') var bchLib = require('@owstack/bch-lib') const buf = new Buffer('b27ab45d3e3d157e8b95f800347974f9991cf13ceb814e1992f40c5e4e6d5253', 'hex') const privateKey = new bch.PrivateKey(buf, bch.Networks.testnet) const address = privateKey.toAddress('testnet') insight.getUnspentUtxos(address.toString(), function (error, utxos) { if (error) { console.error(error) return } consol

Cannot send BTC. "Insufficient funds"

Cannot send BTC. &quot;Insufficient funds&quot; Yesterday I've sent transaction from my 2-of-4 Multi-sig wallet in Copay for Mac. Transaction was signed by me and 1 more user. It was broadcasted to Blockchain (As Copay says). But when I copy TX ID and search it on Blockchain.info or Insight - i see "No transaction found" message. For now, I cannot create new transaction from this wallet because I receive an error "Insufficient funds". Is there any workaround for this? https://ift.tt/2OQda0X

😉 SO MUCH NEWS Including: Steem Hard-Fork | India | ZCash + ETH Merger? | Edenchain's Misconduct

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😉 SO MUCH NEWS Including: Steem Hard-Fork | India | ZCash + ETH Merger? | Edenchain's Misconduct 😀 Thank You For Watching! :D 🚩Remember to subscribe and hit the bell "🔔" icon to get notifications as soon as I upload a new video or start a live stream! 🎩►Support Us On Patreon To Get Access To Our Exclusive Private Telegram Chat Group: https://goo.gl/vpX5sW ►Join Our YouTube Channel Membership & Get A Special Emoji To Stand Out During Our Livestreams: https://www.youtube.com/channel/UCdUSSt-IEUg2eq46rD7lu_g/join 🔥🔥 Join Our NEW Facebook Group! https://ift.tt/2NeEpVc HELPFUL LINKS ► Steemit Velocity Hardfork 20 - https://ift.tt/2AXmGwD ► DLive Moving From Steem To Lino - https://ift.tt/2ppdQyX ► Coinnest Bribe Coin Listing - https://ift.tt/2IgcnE5 ► RBI (Reserve Bank Of India) Battles Petitions At India Supreme Courthttps://news.bitcoin.com/rbi-supreme-crypto/ ► Trezor Users Can Now Exchange Cryptocurrencies Directly In Wallet - https://ift.tt/2xxQ60c ► Link To T

Errors in block header at CBlockDiskPos(nFile=0, nPos=8) forking Monacoin

Errors in block header at CBlockDiskPos(nFile=0, nPos=8) forking Monacoin I'm trying to run some tests forking Monacoin. After I generate the genesis block, I get this error in the debug.log file. Errors in block header at CBlockDiskPos(nFile=0, nPos=8) Which of course means that the genesis block's wrong. I tried with Vertcoin and I'm getting the same error. I'm not sure what's wrong. Monacoin original params consensus.nMinimumChainWork = uint256S("0x000000000000000000000000000000000000000000000002ee52a8e6e4475732"); consensus.defaultAssumeValid = uint256S("0x8ee1fd0a836d804422a100fb5c1ca7626c7a35b492c234146797f4a50f38eea8"); assert(consensus.hashGenesisBlock == uint256S("0xff9f1c0116d19de7c9963845e129f9ed1bfc0b376eb54fd7afa42e0d418c8bb6")); assert(genesis.hashMerkleRoot == uint256S("0x35e405a8a46f4dbc1941727aaf338939323c3b955232d0317f8731fe07ac4ba6")); My params consensus.nMinimumChainWork = uin

I know I had Bitcoins back in the Day, but

I know I had Bitcoins back in the Day, but I have all my old computers and have the hard drives, so how do I systematically go back finding which on has my bitcoins? At the time, I figured it was no big deal, but now finding the correct one, could be worth while. So my question is, how to I search my hard drives to find the one that contains the bitcoins? Is there a file I need to search for? https://ift.tt/2OLYnnH

I own some bitcoin, but forgot how and where i stored them. How can I find my lost bitcoin?

I own some bitcoin, but forgot how and where i stored them. How can I find my lost bitcoin? I purchased one bitcoin back on 2/8/14 and now don't recall having any kind of account information. I actually forgot about the purchase until recently. My email address has not changed since I purchased the one bitcoin back in 2014. Not sure how to access that one bitcoin in the event I would ever want to sell it or just know how to get to it. Thanks for any guidance you can provide. https://ift.tt/2QWt23q

DBX - The Blockchain For Real World Apps Launches Official ICO

DBX - The Blockchain For Real World Apps Launches Official ICO September 24th, 2018, Singapore – The technology company that’s leveraging Blockchain to build applications and businesses with transparency and control of data in its core, begins ICO. https://ift.tt/2QUq9Qs

Tendermint consensus: Are validators "known" and "pre-selected"?

Tendermint consensus: Are validators &quot;known&quot; and &quot;pre-selected&quot;? What are similarities and differences between Tendermint consensus and Proof-of-Stak ? For example, in both consensus, a validator is selected randomly (I think in Tendermint consensus they are selected in a round robin process). And I think in Tendermint consensus, validators are known and pre-selected , unlike Proof-of-Stake consensus. Is it true? and if yes, what entity does confirm a known validator? https://ift.tt/2IbSy0C

What is the relationship of ckeypool and ckeystore?

What is the relationship of ckeypool and ckeystore? In the source, there are ckeypool and skeystore. I wonder what is the relationship of them and why need both. https://ift.tt/2NzwxPh

How do I interact with Bitcoin Core from NodeJS?

How do I interact with Bitcoin Core from NodeJS? I am new to the Bitcoin world. I have installed Bitcoin Core on a Windows machine and am running the full node. I want to develop a nodejs app that would be running on the same machine interacting with the Bitcoin node for 'balance/transfer funds/create wallet/etc'. I will really appreciate any pointers or sample code to achieve that. https://ift.tt/2QWsF92

Accidentally shutdown system while Bitcoin Core client was synchronizing

Accidentally shutdown system while Bitcoin Core client was synchronizing My computer was accidentally shutdown while Bitcoin Core was synchronizing and it is now giving the error fatal error please see error log. Please tell me what is the solution to this problem. https://ift.tt/2xN9khP

MakerDAO Receives $15 Million From Crypto Fund Andreesen Horowitz a16z To Spurn Stable Coin Adoption

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MakerDAO Receives $15 Million From Crypto Fund Andreesen Horowitz a16z To Spurn Stable Coin Adoption 😀 Thank You For Watching! :D 🚩Remember to subscribe and hit the bell "🔔" icon to get notifications as soon as I upload a new video or start a live stream! 🎩►Support Us On Patreon To Get Access To Our Exclusive Private Telegram Chat Group: https://goo.gl/vpX5sW ►Join Our YouTube Channel Membership & Get A Special Emoji To Stand Out During Our Livestreams: https://www.youtube.com/channel/UCdUSSt-IEUg2eq46rD7lu_g/join 🔥🔥 Join Our NEW Facebook Group! https://ift.tt/2NeEpVc ____________________ HELPFUL LINKS / SOURCES -Check out @crypt0snews’s Tweet: https://twitter.com/crypt0snews/status/1044241495136456707?s=09 ___________________________ Any Donations Are Really Appreciated! ►💓Donate ETH and other Ethereum Tokens - 0x1466032B4F0F13910DA35B16371807428CB40714 ►💓Donate Bitcoin - 3JKQycXHdD5yqSRTf5VabM28Ff9AfXYcJD ►💓Donate Using Paypal: https://goo.gl/7m1X4Z __________

UK's Largest Port Operator to Delve Into Blockchain Solution

UK's Largest Port Operator to Delve Into Blockchain Solution Associated British Ports (ABP), a privately operated UK port operator, has signed a MoU with freight forwarder Marine Transport International to delve into a Blockchain tech application targeted at enhancing connectivity at the 21 ports it operates. https://ift.tt/2xKfaAw

Financial Blockades aren't Good for Humanity but Crucial for Cryptos

Financial Blockades aren't Good for Humanity but Crucial for Cryptos Human beings from every corner of the community, with absolutely nothing in common except for a shared hardship suffered. All have surprisingly found themselves closed out minus any official warning by their payment provider - account frozen, lifeline broken apart, funds seized. And for what reason precisely? For the formless crime of not conforming with the terms of service. In the real world, however, the only criminals are the financial providers that committed these acts against their customers. https://ift.tt/2OHEJsV

Can we Consider Blockchain the Fifth Protocol in the System of the Internet?

Can we Consider Blockchain the Fifth Protocol in the System of the Internet? Since its very beginning, the Internet has been the largest and most popular network in the world. It is used for the distribution of every kind of information, starting with news and ending at entertainment. Cryptocurrencies, powered by Blockchain technology, can be seen as a natural extension of the Internet, modernizing its working principles. https://ift.tt/2I9eQzQ

is every Block of blockchain is connect to each other?

is every Block of blockchain is connect to each other? like as we create a new block , so it will connected to existing Blockchain or it will create a new blockchain? https://ift.tt/2pyZigw

Is Anonymity The Future For Bitcoin?

Is Anonymity The Future For Bitcoin? Anonymity will create a trust deficit in Bitcoin as a viable investment option and a value storing digital currency. The only reason why there is so much confidence in the market for Bitcoin is that all the transactions are available in the public domain in real time. This is why people have trust in Bitcoin. We all know that Bitcoin is based on the highly secured, sophisticated and advanced Blockchain Technology. As every transaction on the block needs approval from various sources on the network, it makes Bitcoin trading a transparent and accountable process. Therefore, to do away with the 'public character' of Bitcoin and bringing in anonymity will compromise with its security feature and further create suspicion in the public's eyes. And most importantly, adding anonymity will also facilitate terror-funding, illegal transactions, and black money laundering, etc. Hence, it is extremely important that Bitcoin should retain its essentia

How can a third party spend BCH accidentally sent to a BTC address?

How can a third party spend BCH accidentally sent to a BTC address? I transferred bch to an electrum wallet address and haven't ever received it because electrum uses only btc. As I have been trying to recover it I looked up the transaction on explorer.bitcoin.com and it was input but has also been output 5 times and the balance shows 0. So it would appear that someone has access. How is that possible? Shouldn't it be secure? Do I have any sort of recourse? https://ift.tt/2pwwO6U

Problems recovering BCH accidentally sent to BTC address

Problems recovering BCH accidentally sent to BTC address I am one of those people who transferred BCH from bitcoinpurser.com into my electrum wallet that only takes BTC. I have read several articles and have installed and created an elctroncash wallet. I can see that the two have successfully synchronized but on both the transaction still shows as pending. I originally transferred the BCH on September 5. I created the electron cash wallet on the 19th. I would think that it should have come through by now. Shouldn't it? How long does it usually take? So, I am wondering if I sent it to the correct address. Is there a way for me to check that? I have a crypto address from bitcoinpurser when I sent them. https://ift.tt/2IaXTVJ

Ignis transaction not included in the blockchain

Ignis transaction not included in the blockchain The following transaction submitted to the Ardor blockchain remained unconfirmed and eventually expired, what is the the reason for this? { "senderPublicKey": "...", "isBundled": false, "chain": 2, "signature": "3a49a35627b4ce8a5ac2822b35818f907aec4fd53e79fb02d900d88c0f991c0d71973c434ccaad318a1288a1fb64e53d20dc30de74beb18520c5f4bce06372d4", "feeNQT": "100000000", "requestProcessingTime": 0, "type": 0, "fullHash": "552ec333deb265d60ccfa4225123106ce4fc8f9a751185c561083b4cd9b14ed3", "version": 1, "fxtTransaction": "0", "phased": false, "ecBlockId": "18397966223991632613", "signatureHash": "72caad33596e08e67fe43f42033c0223f9abec9b440b10c07cfd186a037eb972", "attachment": { "version.OrdinaryPayment&

How to programmatically get blockchain via p2p

How to programmatically get blockchain via p2p Is there a guide that describes how to download the bitcoin blockchain from the bitcoin network without the usage of any third party api? Any programming language would be sufficient, but python, javascript or java would be preferred. Thanks in advance! Nandor https://ift.tt/2MRlJGV

Updated z-enemy 1.21 Miner With Performance and Stability Improvements

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Updated z-enemy 1.21 Miner With Performance and Stability Improvements Another update for the z-enemy 1.21 Nvidia GPU miner that apparently focuses on adding some not so significant performance and stability improvements, as well as fixing some bugs. The lest new feature is an uptime reporting, so you know how long your mining rigs have been running without problems with the z-enemy miner. It is recommended to update to the latest release if you are currently mining using an older version in order to get the optimal performance and stability. The latest z-enemy version 1.21 is available for CUDA 9.1 and 9.2 for both 32-bit and 64-bit Windows versions as well as CUDA 9.0, CUDA 9.1 an CUDA 9.2 binaries for Linux (HiveOS, PiMP OS, EthOS & Ubuntu), the 32-bit version does seem to be faster in some of the algorithms. Do note that for maximum performance it is recommended to have the latest drivers installed (ver. 398+). We remind you that z-enemy is a closed source miner available onl

Bitmain Announced Their First 7nm ASIC Chip, Soon in Miners

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Bitmain Announced Their First 7nm ASIC Chip, Soon in Miners Bitmain has finally announced their next generation of ASIC chips that are based on 7nm Finfet technology called BM1391 for the SHA256 algorithm, these chips will power the next generation of Bitcoin ASIC miners coming from the company. The new BM1391 chips integrate more than a billion transistors and are optimized for maximum efficiency according to the company and can achieve a ratio of energy consumption to the mining capacity that is as low as 42 J/TH. Bitmain was dominating the Bitcoin mining market with their Antminer S9 in terms of hashrate and units shipped, but they started losing in terms of performance and efficiency lately due to the fact that the competition was adopting new production technologies and making further optimizations to get higher hashrates. We’ll see if Bitmain will be able to get back in the game with their next generation ASIC miners using the new chips… https://ift.tt/2Q0ZEr9

Setting up node, no connection when announce ip address to peers

Setting up node, no connection when announce ip address to peers I want to announce my host name when running node. When I set nxt.myAddress=hostname or IPaddress, there are no connection to peers. But when I keep it empty everything is fine. https://ift.tt/2DroLCe

Newbie in "bitcoin core"

Newbie in &quot;bitcoin core&quot; I am new to bitcoin world. I have installed bitcoin core ( https://bitcoincore.org/en/download/ ) on windows machine and running the full node. Now I want to develop nodejs code on the same machine, using which I can get 'balance/transfer funds/create wallet/etc' which connects to my locally running full node. I will really appreciate any pointers or sample code to achieve that. THanks, SJ https://ift.tt/2NDEq6k

How do I Derive Bech32 Address from P2WPKH Output Script?

How do I Derive Bech32 Address from P2WPKH Output Script? I am building a small script to decode the raw coinbase transaction data into a human-readable viewer without external scripts to better my understanding around the subject. I've noticed that there are many different types of output script types among transactions. (P2SH, P2PK (as seen in genesis block), P2PKH, etc) One thing I have not been able to grasp is how to obtain the Base58 address in the new SegWit P2WPK and P2WSH types. For example, Block #542748 has this coinbase transaction which my script determines to have a pay to witness public key (P2WPK) output with 97cfc76442fe717f2a3f0cc9c175f7561b661997 as the public key hash. Traditionally, in P2PK, P2PKH and P2SH I've used the image on this thread which works quite well. When I apply the same method as the pubkeyhash (P2PKH) with the following operations I get a totally different address: Append version byte: 0097CFC76442FE717F2A3F0CC9C175F7561B661997 SH

libwallycore error installing LND on Ubuntu 18.04

libwallycore error installing LND on Ubuntu 18.04 I'm setting up an LND node on Ubuntu 18.04. I've installed python3, and cloned the repo. I ran configure, and get this error on the make command: checking byteswap.h, usability... no checking byteswap.h, presence... no checking for byteswap.h,... no checking sys/mman.h usability... yes checking sys/mman.h presence... yes checking for sys/mman.h... yes checking whether cc is Clang... no checking whether pthreads work with -pthread... yes checking for joinable pthread attribute... PTHREAD_CREATE_JOINABLE checking whether more special flags are required for pthreads... no checking for PTHREAD_PRIO_INHERIT... yes checking asm/page.h usability... no checking asm/page.h presence... no checking for asm/page.h... no checking for python... no configure: error: Cannot find python in your system path external/Makefile:51: recipe for target 'external/libwally-core/src/libwallycore.la' failed make: *** [external/libwally-core/src/l

How do I Derive Bech32 Address from P2WKH Output Script?

How do I Derive Bech32 Address from P2WKH Output Script? I am building a small script to decode the raw coinbase transaction data into a human-readable viewer without external scripts to better my understanding around the subject. I've noticed that there are many different types of output script types among transactions. (P2SH, P2PK (as seen in genesis block), P2PKH, etc) One thing I have not been able to grasp is how to obtain the Base58 address in the new SegWit P2WPK and P2WSH types. For example, Block #542748 has this coinbase transaction which my script determines to have a pay to witness public key (P2WPK) output with 97cfc76442fe717f2a3f0cc9c175f7561b661997 as the public key hash. Traditionally, in P2PK, P2PKH and P2SH I've used the image on this thread which works quite well. When I apply the same method as the pubkeyhash (P2PKH) with the following operations I get a totally different address: Append version byte: 0097CFC76442FE717F2A3F0CC9C175F7561B661997 SHA