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May 15

Bitcoin Cash Slated for May 15- Upgrade to Bring Improvements for Users and Merchants

05/05/2021 by Idelto Editor

Bitcoin Cash May 15 Upgrade Brings Improvements for Users and Merchants

On May 15, 2021, the Bitcoin Cash network will undergo the process of an upgrade that will bring a handful of improvements. These updates include the removal of the unconfirmed transaction limit, enabling multiple OP_RETURNS, the implementation of double-spend proofs, and the inclusion of a new mining block default limit size of 8 MB, as the inclusion of CHIPs (Cash Improvement Proposals) to introduce new specification changes to the protocol.

Bitcoin Cash May 15 Upgrade: What You Need to Know

The Bitcoin Cash (BCH) network will experience an upgrade on May 15th that will bring a series of simple, yet interesting changes focused on usability and quality of life improvements instead of hard changes to the consensus algorithm. Most of the important changes are destined to improve the experience of users and merchants when using bitcoin cash to make online or in-store payments, reaffirming the commitment the currency has with becoming a peer-to-peer cash-focused tool.

Documentation for the May 15, 2021, Bitcoin Cash network upgrade.

The first important change proposed is the removal of the unconfirmed chained transaction limit, which will allow users to do more than 50 chained unconfirmed transactions at a time. This was a highly requested feature for a long time by gambling sites and other high volumes, quick transaction apps that relied on Bitcoin Cash as a payment solution. Satoshi Dice, a dice-playing app, even offered a bounty of 1000 BCH last year to get rid of this limit. Now, its users will be able to enjoy a more streamlined experience without having to wait for a block to be mined every 50 transactions.

Another important update is the introduction of double-spend tests, that will allow nodes to message certain wallets when an attempt of double spending is happening with a transaction. This will improve the security of 0-conf transactions for applications that use high-volume, high-value transactions commonly.

Other important updates include changing the default block mining max size to eight megabytes, something that will allow new installs and lazy operators to include mine bigger blocks without having to configure this parameter by themselves (but the option can be changed), and the inclusion of more than one OP_RETURN statement in each transaction, offering programmers the choice of using this space for other different purposes while still preserving its use for the SLP token protocol.

CHIPs and the New Upgrade Schedule

One of the most criticized aspects of the upgrade/ hard fork the process of Bitcoin Cash was the centralization and transparency of what was going to be included in each upgrade and what was definitely left out. For past updates, there was no standard to follow and goalposts and objectives were often moved with no definition. To solve this particular problem, the node programming community introduced the concept of CHIPs.

CHIPs (Cash Improvement Proposals) are standardized proposals that seek to modify or improve certain aspects of the Bitcoin Cash environment. These CHIPs would have to be first presented to the community to be considered by full node client programmers, who will try to find consensus to include (or reject any significant modification. Most of the CHIPs presented till now are hosted on the Bitcoin Cash Research page, which serves as a sort of hub for these considerations.

All of this will need a longer period to take care of and examine each one of the proposals before an update; this is the reason why this upgrade is also modifying the schedule for upgrades to happen once every year. This is a more stable approach that now allows for more experimentation and careful consideration of more radical changes to the protocol for future upgrade cycles.

Meanwhile, bitcoin cash (BCH) markets have seen significant gains during the last 48 hours, jumping over the $1,200 per unit range on Wednesday morning (ET).

What do you think about the Bitcoin Cash May 15 network upgrade? Share your thoughts on the subject in the comments section below.

Filed Under: BCH, BCHN, Bitcoin, Bitcoin Cash, Bitcoin Cash Node, chips, cryptocurrency, English, hard-fork, May 15, News Bitcoin, technology, update

Bitcoin Cash Upgrade Complete: 3 New Features Added to Consensus Rules

15/05/2020 by Idelto Editor

Bitcoin Cash Upgrade Complete: 3 New Features Added to Consensus Rules

Today, at precisely 9 a.m. ET on May 15, 2020, the Bitcoin Cash network completed another upgrade adding a few new features to the blockchain. The latest upgrade comes with new opcode support, a chain limit extension, and the improved counting of signature operations using the new “Sigchecks” implementation.

A Number of Blocks Have Been Mined Under New Consensus Rules

Every six months, the Bitcoin Cash network upgrades, and they usually take place on May 15, and November 15 every year. BCH supporters all around the world have been monitoring the upgrade, as they do every year, in order to see if everything went smoothly. The upgrade initiated after block 635,258 and the consensus rules went into effect after the next block was mined. The first addition allows for faster re-spending of unconfirmed transactions as developers have increased the chained transaction limit from 25 to 50. If one was to look at the history of mempool chain limiting, they would find that when Satoshi first released Bitcoin, he did not include a limit. Bitcoin Unlimited’s chief scientist Peter Rizun discusses the exploration of chain limits in a detailed editorial on the blog read.cash.

Bitcoin Cash Upgrade Complete: 3 New Features Added to Consensus Rules

Another addition is the opcode, OP_Reversebytes, which reverses the bytes of the top stackitem. In January 2020, Bitcoin Cash developers hosted a video conference about the Bitcoin Cash Script Roadmap and the opcode OP_Reversebytes. One idea that could leverage OP_Reversebytes is the concept “Mitra,” or the project formerly known as Nimbus that was developed by Tobias Ruck. According to the Ruck, the transaction version could unleash sophisticated smart contract potential on the BCH network. The final feature that improves sigops counting called “Sigchecks” was discussed in the BCH developers meeting #18. The Sigchecks specifications explain the motivation behind the new implementation if one was to visit the Github repository.

Bitcoin Cash Upgrade Complete: 3 New Features Added to Consensus Rules

“Since early days, Bitcoin has had a Sigops counting rule for limiting the amount of CPU usage possible in a given transaction or block, based on the principle that signature verifications are by far the most CPU-intense operations,” the specifications detail. “The essential idea of Sigchecks is to perform counting solely in the spending transaction, and count actual executed signature check operations.”

Bitcoin Cash Upgrade Complete: 3 New Features Added to Consensus Rules

Discussions Toward Future Development

Overall the BCH community is pleased with the upgrade change and many supporters are discussing future improvements like Avalanche, UTXO commitments, Re-activating the following opcodes; OP_Mul, OP_Lshift, OP_Rshift, and OP_Invert, and concepts like Bobtail. Moreover, the community has been celebrating and discussing the upgrade on May 15 and future development as well. For instance, Collin Enstad is hosting a live stream with a number of Bitcoin Cash supporters prior to the upgrade and following the event as well.

What do you think about the BCH chain completing the upgrade? Let us know what you think in the comments below.

The post Bitcoin Cash Upgrade Complete: 3 New Features Added to Consensus Rules appeared first on Bitcoin News.

Filed Under: BCH, BCH developers, BCH upgrade, Bitcoin Cash, Chain Limit, cryptocurrency, English, Extending Chain Limit, Fork, May 15, News, News Bitcoin, Nov 15, OP_Reversebytes, Sigchecks, Upgrade

Bitcoin Cash Upgrade 3 Days Away – New Opcode Support, Chain Limit Extension, Sigchecks

12/05/2020 by Idelto Editor

Bitcoin Cash Upgrade 3 Days Away - New Opcode Support, Chain Limit Extension, Sigchecks

On May 15, the Bitcoin Cash (BCH) blockchain will be upgraded and there will be at least three new features added to the longest chain. The upgrade in three days is being discussed fervently by the community, because it follows the recent and controversial Infrastructure Funding Proposal (IFP).

Bitcoin Cash to Upgrade In Three Days – Bitcoin ABC’s Amaury Séchet Discusses IFP During Recent Podcast

In three days’ time, the Bitcoin Cash (BCH) blockchain will upgrade again, adding a few new features to the network. If things go smoothly, as they have in the past, the protocol will have an increased transaction chain limit from 25 to 50. The chain limit extension was requested by various members of the industry for quite some time now. The opcode ‘OP_Reversebytes’ will also be supported in script after the upgrade as well. BCH developers have also improved the counting of signature operations using the new “Sigchecks” method. There is also the IFP code, which remains in the Bitcoin ABC codebase but won’t be used with the Bitcoin Cash Node (BCHN) project. Developers who worked on the BCHN chain have noted that regardless of whether the Infrastructure Funding Plan (IFP) is voted in, the implementation was built to follow the longest chain.

Bitcoin Cash Upgrade In Three Days - New Opcode Support, Chain Limit Extension, Sigchecks
The new upgrade for the Bitcoin Cash (BCH) blockchain will take place on May 15, 2020.

The BCHN full node will be adding the other features that go along with the May 15, 2020 upgrade. Just recently, Bitcoin ABC developer Amaury Séchet spoke with Coinspice reporter, C. Edward Kelso, and explained his thoughts about the upcoming upgrade. The podcast called “The IFP and Why it Remains in the Code,” gives a glimpse into how Séchet is feeling about the next upgrade. The discussion with Kelso gives a comprehensive look at the reason why the IFP was left in the ABC codebase and Séchet’s opinion concerning alternate full node implementations. For those who want to read more about the upgrade’s new additions and the IFP plan, check out the links below published by Bitcoin ABC team members.

  • Draft May 2020 Protocol Upgrade Specification.
    Draft Specification for OP_REVERSEBYTES.
    Draft Specification for Sigchecks.
    Miner Infrastructure Funding Plan.

Upgrading Nodes Across the Board

About a week ago, the developers behind the BCHN project published its technical bulletin written by Calin Culianu. Prior to publishing the bulletin the BCHN project reached 100% of its Flipstarter funding goal 12 days before the cutoff date. On May 11, the development team from Bitcoin Unlimited tweeted to the public reminding people they need to upgrade their nodes. “Upgrade your Bitcoin Cash node before May 15th,” the development team wrote.

Users can download the latest Bitcoin Unlimited implementation here and the team is offering advice on how to upgrade your node via the BU Telegram channel. Bitcoin ABC node runners can download the latest ABC release here and BCHN users can get a copy of the Bitcoin Cash Node implementation here. Full node operators can also download the latest BCHD software, Flowee the Hub, Knuth, and Bitcoin Verde.

At the time of publication, there are 1,414 public nodes running on the Bitcoin Cash network. 632 of them are using Bitcoin ABC according to Coin Dance statistics, 689 nodes are running BU. BCHN has 62 nodes today, and there are 31 other nodes running BCHD, Flowee, Verde, and Knuth. Coin Dance also reveals that the Bitcoin Cash IFP did not reach the required threshold and “is not expected to activate before the May 15th deadline.” Right now there’s around 1.8 exahash of proof-of-work hashing power securing the Bitcoin Cash chain. With only three days left and about a month after the BCH halving, BCH supporters will be watching the next upgrade very closely.

What do you think about the next BCH upgrade scheduled for May 15? Let us know in the comments below.

The post Bitcoin Cash Upgrade 3 Days Away – New Opcode Support, Chain Limit Extension, Sigchecks appeared first on Bitcoin News.

Filed Under: Amaury Séchet, BCH, Bchd, BCHN, Bitcoin Cash, Bitcoin Cash blockchain, Bitcoin Cash Node, Bitcoin Unlimited, C. Edward Kelso, Chain Limit, English, Flipstarter, Fork, IFP, May 15, News, News Bitcoin, OP Reversebytes, Opcode, Podcast, Sigchecks, Upgrade, Verde

Honest Nodes Spoiling a Theft Attempt Is Not a 51% Attack, BCH Devs Detail

27/05/2019 by Idelto Editor

Honest Nodes Spoiling a Theft Attempt Is Not a '51% Attack,' BCH Devs Detail

A number of Bitcoin Cash detractors and media publications have recently been spreading a false narrative that the BCH network was ‘51% attacked.’ In reality, however, honest nodes used their hashrate to stave off attacker nodes that were attempting to steal funds on the network.

Also Read: Massive Growth by P2P Exchange and AT&T Accepting BCH in the Weekly Update From Bitcoin.com

BCH Developers Discuss the Recent Upgrade and Dispel the Term ‘51% Attack’

Over the last week, the Bitcoin Cash (BCH) hard fork has been discussed in the context of the attacker that tried to cause maximum damage to the chain and failed. According to the narrative spread many BTC maximalists, the BCH chain was ‘51% attacked’ and the protocol is ‘insecure.’ However, this isn’t the case at all and Nakamoto Consensus on the BCH chain is working as it should. On the Coinspice podcast on May 26, Bitcoin ABC lead developer Amaury Séchet and software engineer Corentin Mercier discussed the so-called attack with host Hayden Otto, in a bid to dispel the FUD and rumors. Basically, during the network upgrade on May 15th, it was discovered that a malicious entity was exploiting an old bug unrelated to the upgrade.

Honest Nodes Spoiling a Theft Attempt Is Not a 51% Attack, BCH Devs Detail
Software engineer Corentin Mercier (upper left), Coinspice host Hayden Otto (upper right), and Bitcoin ABC lead developer Amaury Séchet (bottom center).

The attackers waited to attack the chain on the upgrade day, in order to inflict maximum psychological damage to network participants by stealing funds stuck in ‘anyone can spend’ addresses. During the Coinspice podcast, Séchet explained that since August 2017 a number of coins have been accidentally sent to these ‘anyone can spend’ addresses. The upgrade on May 15 was going to make it so the funds could be accessed by honest nodes and returned to their rightful owners. At the same time, either the attacker or another entity who was aware of the attack prior to the fork placed millions of dollars worth of short positions against BCH so they could short the price during the confusion. But this attempt also failed as the issue was handled rather quickly and the market price of BCH did not budge.

Honest Nodes Sabotaged the Malicious Attackers’ Attempt to Steal Funds

Mercier, Otto, and Séchet agreed that 51% of the hashrate was leveraged (between the two pools BTC.top and BTC.com) to foil the malicious entity trying to steal funds. Calling the honest nodes attackers is illogical and the developers believe it would have been worse if the malicious entity was given access to the funds. “It’s hard to argue that it was a 51% attack,” Séchet emphasized. What the honest miners did is fully described in the Bitcoin whitepaper. The honest nodes’ hashrate of over 51% was used to combat the attacker nodes on the network that were attempting to steal funds.

Honest Nodes Spoiling a Theft Attempt Is Not a 51% Attack, BCH Devs Detail
An excerpt from Satoshi’s Bitcoin whitepaper.

The honest nodes sabotaged the attack and it ultimately failed. There were no funds stolen and nothing else was badly affected as a result; only the aggressors’ attack was spoiled. “Honest miners acted in the best interest of their investment and defended the value of Bitcoin Cash,” the Coinspice podcast host remarked. Otto also noted that anyone can use a blockchain explorer and verify that the only funds that were affected were the funds the attacker was trying to steal.

Séchet’s Words Underscored That Haters Will Always Hate and the Community Needs to Focus on Improvements Instead of Detractors

Critics of the act tried to vilify the BCH chain by using the terms “attack” and “51% attack” when in actuality honest miners just did their job. There was a bug that was exploited and it was not much different to the BTC forks on August 8, 2010, and March 11-12, 2013.

Honest Nodes Spoiling a Theft Attempt Is Not a 51% Attack, BCH Devs Detail
The coordination between Btc Guild and Core developer who used 51% of the hashrate on March 11-12, 2013 to revert the chain from version 0.8 to 0.7. No one called the rollback a ‘51% attack’ as it was honest nodes working for the best interest of the chain.

In 2013, Btc Guild’s hashrate was leveraged to downgrade the main chain from Bitcoin 0.8 to version 0.7 because of a bug that was discovered. Arvind Narayanan described the situation in full detail which showed Core developers had coordinated with a large mining pool to revert the situation. Narayanan even highlighted that it was a “centralized decision” that was utilized to help find a solution to the problem. Not only that, but the act was highly contentious in terms of whether or not the coordination between 51% of the hash and Core developers was a good thing. At the time, Vitalik Buterin said “the incident opens up serious questions about the nature of the Bitcoin protocol.”

In the video, Séchet mostly discussed how the BCH community should concentrate on improving the Bitcoin Cash network as opposed to focusing on the BTC community. As far as the “51% attack” comments, Séchet said that these disparagers will always find something to blame. “Whatever happens they will find something to complain about it,” Séchet noted and said that the community should not lend too much attention to the slander. Check out the video in its entirety below.

What do you think about the Coinspice podcast discussing the recent upgrade and the 51% attack propaganda spread by BCH critics? Let us know what you think about this subject in the comments section below.


Image credits: Shutterstock, Coinspice, and Arvind Narayanan’s blog “Freedom to Tinker.”


Verify and track bitcoin cash transactions on our BCH Block Explorer, the best of its kind anywhere in the world. Also, keep up with your holdings, BCH, and other coins, on our market charts at Bitcoin.com Markets, another original and free service from Bitcoin.com.

The post Honest Nodes Spoiling a Theft Attempt Is Not a 51% Attack, BCH Devs Detail appeared first on Bitcoin News.

Filed Under: 2013, 51% attack, Amaury Séchet, anyone can spend, Bitcoin Cash, BTC Guild, BTC.com, BTC.TOP, Core Devs, Corentin Mercier, English, Exploit, Hayden Otto, Honest Nodes, March 12, May 15, Miners, N-Technology, News Bitcoin, old bug, SegWit, technology, Upgrade

Bitcoin ABC Developers Publish Bitcoin Cash Upgrade Timeline

10/07/2018 by Idelto Editor

Bitcoin ABC Developers Publish Bitcoin Cash Upgrade Timeline

Just recently the Bitcoin ABC development team has published the Bitcoin Cash ‘November 15 Upgrade Timeline’ which details what the programmers plan to do before the hard fork. As the upgrade approaches the ABC development team wants to ensure a smooth hard fork by making sure every full node participant and miner is ready with the necessary preparations.

Also read: Privacy-Centric ‘Bob Wallet’ Adds Bitcoin Cash Support

Preparing for the Next Bitcoin Cash Hard Fork

The Bitcoin Cash (BCH) network is planning for another hard fork this coming November which will see a few more changes to the protocol. So far since the split on August 1 the BCH community performed two successful hard forks with one on November 13, 2017, and the other on May 15, 2018. The first upgrade fixed the network’s Difficulty Adjustment Algorithm (DAA), while the second hard fork saw a 32 MB block size increase alongside a few re-enabled Satoshi OP_Codes, and the increase default datacarriersize to 220 bytes.

Bitcoin ABC Developers Publish Bitcoin Cash Upgrade Timeline

The Bitcoin ABC development timeline does not reveal what will be added this November as far as features are concerned. However, the programmers do explain two key goals as for the next codebase upgrade with the first being code completion by August 15, 2018.

“Due to the higher-than-normal risk associated with protocol upgrades, everyone needs time to review the code changes involved,” explains the latest upgrade timeline.  

To accommodate that, Bitcoin ABC is targeting August 15th as its code completion date — Protocol changes past this date will be recommended for next year’s May hard fork.

Bitcoin ABC Developers Publish Bitcoin Cash Upgrade Timeline

October 15, 2018: The Official Bitcoin ABC 0.18 Release and Testnet Launch Date  

Moreover, when the code is polished, testing on testnet will begin, explains the Bitcoin ABC team, revealing the deadline and 0.18 official release will be on October 15, 2018.

“Barring the discovery of any major issues after two months of testnet testing and debugging, Bitcoin ABC will launch the official release for version 0.18,” the timeline details.        

This will give node operators approximately 30 days to upgrade in time for the hard fork.

Discussions and Proposals

According to an ABC team member, the discussions and the development on the table include various features and some things will be skipped until the next fork in May 2019. Right now developers are discussing and testing “canonical transaction ordering, OP_Datasigverify and variants, tokenization, UTXO commitments, and reintroducing other previously removed OP_Codes.”   

Other proposals that are under development that might make the cut include: binary contracts via OP_Datasigverify, a more efficient way of announcing blocks with Graphene, a revised DAA, double spend proof creation and forwarding, and maybe a nomenclature for the unit of 1/1,000,000 BCH. As of now, there are no guarantees on any of these improvements this coming November or next May. But when the new codebase is launched people will surely find out what features are coming with the next upgrade. Another thing to note is that there has been no mention of a block size increase this time around, and this BCH hard fork may not include an increase.

What do you think about the preparations and timeline for the next Bitcoin Cash network upgrade coming this November? Let us know your thoughts on this subject in the comment section below.


Images via Shutterstock, Pixabay, Bitcoin ABC & BCH logos. 


Verify and track bitcoin cash transactions on our BCH Block Explorer, the best of its kind anywhere in the world. Also, keep up with your holdings, BCH, and other coins, on our market charts at Satoshi’Pulse, another original and free service from Bitcoin.com.

The post Bitcoin ABC Developers Publish Bitcoin Cash Upgrade Timeline appeared first on Bitcoin News.

Filed Under: BCH, Bitcoin ABC, canonical transaction ordering, Codebase, DAA, English, Graphene, May 15, N-Featured, News Bitcoin, Nov 13, Nov 15, OP_Codes, protocol, Release 0.18, testnet, tokenization, Upgrade Timeline, UTXO commitments

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