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Constantinople Incoming: Tomorrow’s Two Ethereum Hard Forks Explained

Constantinople Incoming: Tomorrow’s Two Ethereum Hard Forks Explained

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Constantinople Incoming: Tomorrow’s Two Ethereum Hard Forks Explained

coinnewsdaily by coinnewsdaily
Februar 27, 2019
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Constantinople Incoming: Tomorrow’s Two Ethereum Hard Forks Explained
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In less than 24 hours, the world’s second largest blockchain by market capitalization is expected to activate its sixth and seventh system-wide upgrades, at which point its global user base will be asked to make two near-simultaneous changes to its code.

Known as Constantinople and St. Petersburg, both upgrades will be implemented as “hard forks,” or upgrades that add new rules to the ethereum software that are incompatible with past versions. Both will also take place at the exact same block number – 7,280,000.

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Should users decide to upgrade, St. Petersburg will effectively disable part of the Constantinople code discovered back in January to host a critical vulnerability affecting smart contract security. Further, four out of five planned ethereum improvement proposals (EIPs) – the majority of which, according to independent ethereum developer Lane Rettig, will not be noticeable to the average user.

Calling Constantinople primarily a “maintenance and optimization upgrade” in an interview with CoinDesk, Rettig highlighted in September that the only user group to experience a noticeable change would be miners, the specialized hardware operators who today assemble ethereum transactions into blocks and compete for network rewards.

Indeed, once activated, Constantinople and St. Petersburg will reduce block reward issuance from 3 to 2 ETH, similar to how the previous hard fork – called Byzantium – reduced issuance from 5 to 3 ETH.

“The reduction in ETH block rewards … will clearly have a big impact on miners,” said Rettig to CoinDesk via email.

As explained by Eric Conner, founder of information site ETHHub, the change is intended to be a temporary measure until miners on the blockchain are eventually replaced with new kinds of validators in ethereum’s next upgrade, Serenity.

Conner to CoinDesk back in September:

“[ETH supply] in late 2018 and 2019 is over what was initially assumed by the community. It’s at 7.5 percent inflation now … [We’re] reducing it to 2 ETH per block – roughly 4.5 percent inflation – as a stop gap until Casper is done.”

Ahead of tomorrow’s upgrade, here are some big takeaways from ethereum’s coming code change:

1. It’s a collection of updates

Outside of this reduction in block reward issuance, there’s a number of other technical upgrades also expected to improve operations on the ethereum blockchain before its larger Casper FFG upgrade is fully implemented.

These include EIP 145 “Bitwise shifting instructions in EVM,” EIP 1014 “Skinny CREATE2” and EIP 1052 “EXTCODEHASH opcode.”

On the matter of EIP 145, Lori Levin – CEO of etheruem-based real estate marketplace Imbrex – explained to CoinDesk:

“Adding Bitwise shifting instructions will make it slightly cheaper to conduct certain functions on chain. This is a step in the right direction to making developing on ethereum more cost-effective for [decentralized application] developers.”

For a comprehensive round-up of each of the proposals in Constantinople – including the one to be deactivated through St. Petersburg, read our full coverage:

Constantinople Ahead: What You Need to Know About Ethereum’s Big Upgrade

2. You can watch it live

At present, blockchain explorer site Amberdata is estimating an expected activation time for Constantinople and St. Petersburg tomorrow at 19:15 (UTC).

But because block mining speeds can vary from hour to hour, ethereum users, miners and developers will want to keep a close eye on the website for variations to this estimation as the block count increases. Once activated, users can monitor the progress of both hard forks in real time using a developer tool known as the “fork monitor,” which visualizes ethereum blockchain data into a time series graph.

For details on other useful metrics such as hashrate, market price and node count as the upgrade is rolled-out, check out CoinDesk’s article on “How to Watch Ethereum’s Fork as It Happens.”

(Disclaimer: As of press time, there is no livestream developer call scheduled to begin for the upgrade. Shortly following Thursday’s upgrade, there will be a meeting on Friday at 14:00 (UTC) between the developers to discuss how the hard fork went, among other topics.)

The ‘Thirdening’ Approaches: How to Watch Ethereum’s Fork as It Happens

3. It’s been delayed before

As much as the ethereum community is hopeful the upgrade will go over smoothly, one can never really be too sure when it comes to hard forks. As seen with past ethereum updates, some user groups could continue running older instances of the code, should they so choose.

This is notable as ever since testing for the upgrade began as early back as July 2018, ethereum developers have faced multiple roadblocks causing delays to the activation of Constantinople. Expected to be released on mainnet for as early as October 2018, complications as the code was released on the ethereum test network Ropsten pushed back this estimation to January of this year.

Developers then announced in December main network release for Constantinople would occur on block number 7,080,000 – only to have this activation block number pushed back to 7,280,000 as a result of a last-minute security bug found in the code.

For a play-by-play on how the most recent security bug in Constantinople was found and what sorts of decisions came out of it, the following is a curated list of all major hard fork developments since January:

1. January 11, 2019 – A week before expected activation of Constantinople on mainnet, developers are cautiously optimistic the release will go smoothly.

What to Expect When Ethereum’s Constantinople Hard Fork Happens

2. January 15, 2019 – Not 48 hours before expected activation on block number 7,080,000, developer are notified of a critical security bug.

Ethereum’s Constantinople Upgrade Faces Delay Due to Security Vulnerability

3. January 18, 2019 – Developers agree to delay activation of Constantinople on mainnet until late February and propose a new block number.

Ethereum Devs Propose Activating Constantinople Hard Fork in Late February

4. February 12, 2019 – Final software releases of Constantinople and St. Petersburg from major ethereum clients such as Geth and Parity are released and later compiled into a comprehensive blog post on the official ethereum website.

Take Two: Ethereum Is Getting Ready for the Constantinople Hard Fork Redo

4. Let’s get it over with

Due to the prolonged timeline of this upgrade, the final and most important takeaway is the present community sentiment surrounding the impending release of Constantinople (and St. Petersburg.)

As Taylor Monahan – CEO of blockchain wallet tool MyCrypto – admits to CoinDesk:

“I’m eager to put Constantinople behind us because it’s been such a distraction for a lot of core developers, the community, [and] the entire ecosystem. What we need to be focusing on right now is the path forward for ethereum.”

Independent core developer Lane Rettig couldn’t agree more.

Saying that this planned hard fork has “dragged on long enough,” Rettig told CoinDesk that there is “so much other stuff that [developers] are focused on.”

“All the boxes are checked. All systems operational. Everything looks good, which is a good sign,” explained Rettig about Constantinople. “So, no lingering concerns… We need to move and get to our next milestones basically.”

These milestones according to Rettig include first and foremost, a proposed code change to alter the ethereum mining algorithm such that all miners in the ecosystem are operating on a more level playing field.

In addition, there is also a host of new proposed EIPs up for discussion collectively dubbed ethereum 1x paving the intermediary roadmap to Serenity. Last but not least, developers are also ever attentive to advancing research on the Serenity protocol itself.

“I think that once Constantinople is behind us hopefully the community, the educators, the developers [and] the researchers can really focus on understanding this path forward [and] communicating the path forward with people of all different technical abilities and education levels,” said Monahan to CoinDesk.

Patterned ceiling via Shutterstock 

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