PSA: Bitcoin used to have safe zero-confirmation (instant ...

Double-spending Prevention for Bitcoin zero-confirmation transactions

submitted by pcdinh to btc [link] [comments]

Double-spending Prevention for Bitcoin zero-confirmation transactions

submitted by BobAlison to Bitcoin [link] [comments]

Double-spending Prevention for Bitcoin zero-confirmation transactions

submitted by BitcoinAllBot to BitcoinAll [link] [comments]

Are Bitcoin's Zero Confirmation Transactions Safe?

Are Bitcoin's Zero Confirmation Transactions Safe? submitted by tenthirtyone1031 to Bitcoin [link] [comments]

Double-spending Prevention for Bitcoin zero-confirmation transactions

submitted by BitcoinAllBot to BitcoinAll [link] [comments]

Here are three interesting papers all discussing how merchants can accept 0-conf payments and avoid double spends. All define 0-conf as "fast payments". I think we should fit this term into our vocabulary for BCH.

Countering Double-Spend Attacks on Bitcoin Fast-Pay Transactions
Double-spending Prevention for Bitcoin zero-confirmation transactions
Have a Snack, Pay with Bitcoins
Edit: fixed error in first link
submitted by cryptorebel to btc [link] [comments]

Flux: Revisiting Near Blocks for Proof-of-Work Blockchains

Cryptology ePrint Archive: Report 2018/415
Date: 2018-05-29
Author(s): Alexei Zamyatin∗, Nicholas Stifter, Philipp Schindler, Edgar Weippl, William J. Knottenbelt∗

Link to Paper


Abstract
The term near or weak blocks describes Bitcoin blocks whose PoW does not meet the required target difficulty to be considered valid under the regular consensus rules of the protocol. Near blocks are generally associated with protocol improvement proposals striving towards shorter transaction confirmation times. Existing proposals assume miners will act rationally based solely on intrinsic incentives arising from the adoption of these changes, such as earlier detection of blockchain forks.
In this paper we present Flux, a protocol extension for proof-of-work blockchains that leverages on near blocks, a new block reward distribution mechanism, and an improved branch selection policy to incentivize honest participation of miners. Our protocol reduces mining variance, improves the responsiveness of the underlying blockchain in terms of transaction processing, and can be deployed without conflicting modifications to the underlying base protocol as a velvet fork. We perform an initial analysis of selfish mining which suggests Flux not only provides security guarantees similar to pure Nakamoto consensus, but potentially renders selfish mining strategies less profitable.

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submitted by dj-gutz to myrXiv [link] [comments]

PSA: Bitcoin used to have safe zero-confirmation (instant) transactions until Blockstream intentionally destroyed it.

Many people seem to be unaware that bitcoin previously had safe and instant transactions and easily still could if not for the misguided roadmap of Blockstream and the current Core team. It is also worth pointing out that the current "Core" team actually kicked out much of the original Core team such as Gavin, Jeff, and Mike, but managed to steal all of the good reputation they had built up for Core.
submitted by MemoryDealers to btc [link] [comments]

Coinbase bitcoin transfer still pending after over 20 hours! Does not appear on blockchain. "No transaction found with the hash..." (zero confirmations, zero response from Coinbase) ** Warning: Other Users Experiencing Same Issue **

I sent $900 worth of bitcoin out of my Coinbase wallet over 20 hours ago. Coinbase says the transaction is "pending," yet it has 0 confirmations, and doesn't even show up on the blockchain.
The link Coinbase provides for the "transaction" returns with: "No transaction found with the hash..."
I posted about this problem yesterday. Lots of other users experiencing the same problem. Of course, no response from Coinbase.
submitted by MaxLangley to CoinBase [link] [comments]

Bitcoin Cash Community Embraces Zero Confirmation Transactions

Bitcoin Cash Community Embraces Zero Confirmation Transactions submitted by Bitcoinmathers to btc [link] [comments]

At 12:32pm PST I sent a bitcoin transaction from my mycelium wallet with a "standard fee." It's now 2:13pm, zero confirmations. I thought Segwit was going to fix this?

I love Bitcoin, and I'm always trying to get new people into the space. Usually, I'll have someone download a wallet on their phone, and I'll send them $10 in BTC for fun. It's starting to get ridiculous when after two hours there are zero confirmations.
Segwit is activated, isn't it? Where are the performance gains?
submitted by crypto_lyfe_boyee to btc [link] [comments]

A Visual Explanation of Subchains -- an application of weak blocks to secure zero-confirmation transactions and massively scale Bitcoin

A Visual Explanation of Subchains -- an application of weak blocks to secure zero-confirmation transactions and massively scale Bitcoin submitted by Peter__R to btc [link] [comments]

Lighting Network vs Zero Confirmation Transactions /r/Bitcoin

Lighting Network vs Zero Confirmation Transactions /Bitcoin submitted by ABitcoinAllBot to BitcoinAll [link] [comments]

In the news • Bitcoin Cash Community Embraces Zero Confirmation Transactions - by Jamie Redman

submitted by btcforumbot to BtcForum [link] [comments]

Bitcoin Cash Community Embraces Zero Confirmation Transactions

Bitcoin Cash Community Embraces Zero Confirmation Transactions submitted by ABitcoinAllBot to BitcoinAll [link] [comments]

WORLD MARKETS - BITCOIN CASH COMMUNITY + ZERO CONFIRMATION TRANSACTIONS?!

WORLD MARKETS - BITCOIN CASH COMMUNITY + ZERO CONFIRMATION TRANSACTIONS?! submitted by EmilyNews___com to EmilyNews [link] [comments]

Bitcoin Cash Community Embraces Zero Confirmation Transactions

Bitcoin Cash Community Embraces Zero Confirmation Transactions submitted by leftok to atbitcoin [link] [comments]

Bitcoin Cash Community Embraces Zero Confirmation Transactions

Bitcoin Cash Community Embraces Zero Confirmation Transactions submitted by TheHack3rman to Cryptalk [link] [comments]

Bitcoin Cash Community Embraces Zero Confirmation Transactions

Bitcoin Cash Community Embraces Zero Confirmation Transactions submitted by deezydmv to Bitcoincash [link] [comments]

Bitcoin Cash Community Embraces Zero Confirmation Transactions

Bitcoin Cash Community Embraces Zero Confirmation Transactions submitted by ThrillerPodcast to thrillerpodcast [link] [comments]

Interesting watching (again) the technical discussion by Tom Harding regarding Zero-Confirmation Transactions. Bitcoin (Cash) with *always* low fees means one can send lots of transactions for testing, analysis and experimentation on real-world network...cheaply... /r/btc

Interesting watching (again) the technical discussion by Tom Harding regarding Zero-Confirmation Transactions. Bitcoin (Cash) with *always* low fees means one can send lots of transactions for testing, analysis and experimentation on real-world network...cheaply... /btc submitted by HiIAMCaptainObvious to BitcoinAll [link] [comments]

"You should not trust any transaction with zero confirmations" -said almost everyone ever. But then how can I trust LN because all of those transactions are unconfirmed also. /r/Bitcoin

submitted by HiIAMCaptainObvious to BitcoinAll [link] [comments]

Blockchain - How To Verify A Bitcoin Transaction And Get ... Slow Bitcoin Transaction Confirmation? - Do This! - YouTube What are Blockchain Confirmations? Understand Blockchain Technology How to Verify A Bitcoin Transaction  Bitcoin Transaction ... Tom Harding - Zero-Confirmation Transactions

Zero-confirmation bitcoin transactions Bitcoin transactions and confirmations Bitcoin transactions are incorporated into the bitcoin blockchain, that acts as a shared ledger. Once the transaction has been part of the blockchain for a long enough period of time, it is accepted as truth by all the nodes in the network and becomes an unalterable part of the bitcoin permanent record. This makes it ... Zero-Confirmation Transaction Eine Zero-Conformation Transaction ist eine Transaktion, die noch keine Bestätigung erhalten hat. Während einer Bitcoin-Transaktion kann ein Verkäufer wählen, ob er das Produkt versenden möchte, bevor die Transaktion bestätigt wurde. What does zero confirmation transaction mean? A bitcoin transaction that has been relayed to nodes in the Bitcoin network but has not yet been incorporated into a block. Also known as “unconfirmed transactions”. It can also refer to a seller who releases goods before a Bitcoin payment has been confirmed on the network, with the assumption that such confirmation will occur. Table of Contents Introducing Zero Confirmation Transactions?ConclusionArticles You May Read 5 / 5 ( 1 vote ) If you are untouched with Bitcoin educational news, then you must have missed about the Bitcoin Cash community have been talking about acceptance of the zero-confirmation transaction by merchants. But in theory, anyway, the seller could then try to unload the altcoins a second time, before the blockchain writes the transaction, and get double their money. This rarely happens, and it rarely works, but it happens often enough that it is worth keeping in mind as a risk. So, when you decide to invest in altcoins, remember the rule of “Trust, but Verify,” and also be on the lookout for ...

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Blockchain - How To Verify A Bitcoin Transaction And Get ...

Get your blockchain pending transactions confirmed fast Confirm your bitcon transaction quickly Every transaction must be added to a blockchain — an official public ledger of crypto transactions, in order to be considered successfully completed or valid... For more tips like these visit http://bodymindsuccess.com/bitcoin or subscribe to our channel When a transaction is broadcast to the blockchain, it has zero confirmations. Once a transaction has been added to a block, it is said to be “confirmed” This means that the transaction has ...

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