Byzantine generals problem blockchain technology


To achieve this with the same number of generals as Steem 21 , they consume network bandwidth similar to a sustained 5 transactions per second. On the other hand, Steem rarely has any missed blocks and even more rarely has an orphaned block. After two blocks 6 seconds the probability being orphaned falls further. Anyone relying on the last irreversible block algorithm 40 seconds is protected against almost every conceivable scenario with a worst-case purely theoretical being stuck in a pending state on a minority fork until manual intervention.

There is one additional level of confirmation that could be implemented in DPOS: What you should notice with these numbers is that extra time buys insurance for the last 0. Due to the law of diminishing returns economic marginal utility , the value of increased confidence from People lose more from transaction fees than they would if 1 out of every 1 million transactions were to be randomly reversed.

Meanwhile, the cost of gaining that last 0. Both algorithms have their place, but I am very happy with the design tradeoffs made for DPOS compared to the other algorithms available. At a high level: This gets me thinking on how many things we could do if knew how to coordinate and agree without needing a president.

We need a definition of participation rate. How a DPOS algorithm will work within a network of sidechains? I don't know if it's on the same page with the "fabric" technology described in the roadmap, but I'm curious.

If you have time, the post is here. It seems a lot of people have been complaining in steemit. Here's one example from just recently in general.

Everytime I enter my phone number I get this message: Please try a different phone number. I can tell you that we are working to separate moderation flagging from curating voting. This issue will be improved in time. With respect to phone numbers, we had to block certain classes of phone number due to abuse. If you can share the first 4 digits of the number I will have our team investigate if it is on the block list.

Good, you understood what I meant about the downvote.. I wasn't all that clear. But the fact that you're working on this is great to hear! You may want a "Contact The Help Desk" button, next to the "Continue" button on the phone signup page, to retain legit new user signups. I've noticed a few real complaints about this.

I am now curious about the phone number issue. It wouldn't allow it in the sign up process. It starts with Anyway, I was able to use a different number, I figured it was just some glitch.

Asking users to disclose personal mobile phone numbers while also at the same time denying access to those who don't have mobile phone subscriptions is in itself both abusive to end-user security and elitist. Not to mention the inequality that manifests when some states force mobile phone registration on their users and others do not. This extreme hack comparable to using a machine gun to kill a chicken is motivated by a desire to easily control abusers, which implies that the whole system is inherently flawed-- flawed by the fact that useful content is cannot be separated from drivel by the rating system as it was designed.

It's also somewhat shocking that steemit does not recognize the important role anonymity plays with speech freedom that's critical to having a nanny-free community. This new direction makes steemit. Perhaps it was never intended as such, but it's a pity to see a good tool get downgraded to Facebook-quality blogging.

DPOS is an algorithm whereby stakeholders elect an odd number of block producers. Each round the block producers are shuffled and assigned a time slot in which they should produce a block. With this process in place, the longest chain is considered the best chain. It is impossible for a minority of block producers to create a longer chain because they would be producing fewer blocks per minute than the majority blockchain.

Eventually the minority fork would become longer and global consensus would necessarily change. Members of Cosmos community recently discovered a particular sequence of events that could cause the LIB algorithm to break down by causing the network to split on two different LIB.

This vulnerability in the LIB algorithm does not constitute a breakdown of DPOS because the LIB algorithm was an optional addition designed to identify the number of confirmations required before an exchange has sufficient guarantees that a block will not get orphaned. The LIB algorithm is similar to the 6 confirmation algorithm used by Bitcoin. A problem with Cosmos is an in implicit assumption that the set of generals is fixed.

At least for a given block. Blocks are produced, votes are cast, and new generals can be elected. From this we can conclude that Cosmos has a different deadlock condition. Every algorithm makes certain tradeoffs. To achieve this with the same number of generals as Steem 21 , they consume network bandwidth similar to a sustained 5 transactions per second.

On the other hand, Steem rarely has any missed blocks and even more rarely has an orphaned block. After two blocks 6 seconds the probability being orphaned falls further. Anyone relying on the last irreversible block algorithm 40 seconds is protected against almost every conceivable scenario with a worst-case purely theoretical being stuck in a pending state on a minority fork until manual intervention. There is one additional level of confirmation that could be implemented in DPOS: What you should notice with these numbers is that extra time buys insurance for the last 0.

Due to the law of diminishing returns economic marginal utility , the value of increased confidence from People lose more from transaction fees than they would if 1 out of every 1 million transactions were to be randomly reversed. Meanwhile, the cost of gaining that last 0. Both algorithms have their place, but I am very happy with the design tradeoffs made for DPOS compared to the other algorithms available. At a high level: This gets me thinking on how many things we could do if knew how to coordinate and agree without needing a president.

We need a definition of participation rate. How a DPOS algorithm will work within a network of sidechains? I don't know if it's on the same page with the "fabric" technology described in the roadmap, but I'm curious.

If you have time, the post is here. It seems a lot of people have been complaining in steemit. Here's one example from just recently in general. Everytime I enter my phone number I get this message: Please try a different phone number.

I can tell you that we are working to separate moderation flagging from curating voting. This issue will be improved in time. With respect to phone numbers, we had to block certain classes of phone number due to abuse.

If you can share the first 4 digits of the number I will have our team investigate if it is on the block list. Good, you understood what I meant about the downvote.. I wasn't all that clear. IOTA features a new blockless distributed ledger, Tangle, which promises unprecedented scalability for the Internet of Things, addressing the need for interoperability and sharing of resources.

The distributed ledger behind IOTA uses a directed acyclic graph DAG instead of a blockchain, which eliminates the need for mining because each new transaction confirms one or more previous transactions. Another altchain that uses a directed acyclic graph DAG instead of a blockchain is Byteball , which is a platform for risk-free conditional smart payments.

The blockchain revolution that started in with the release of Bitcoin is well underway, and many new, exciting blockchain projects are announced every month. While there are still several obstacles—with scalability being the main one—that stand in the way of mass adoption, some of the largest enterprises and organizations are fully committed to blockchain development and see this technology as the future of countless industries.

Reaching Decentralized Consensus with Blockchain Technology Blockchains are distributed computing systems with high Byzantine fault tolerance. The Evolution of Blockchain: The Most Noteworthy Altchains Ethereum Ethereum is a blockchain-based distributed computing platform with support for smart contracts, which are computer programs intended to facilitate, verify, or enforce the negotiation or performance of contracts.

Ripple Ripple is a real-time gross settlement system and an open protocol that enables a peer-to-peer server architecture to facilitate the movement of value among financial institutions.