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21 votes
Accepted

Why was the block time changed from 1 to 2 minutes?

If Monero usage increases so will orphan blocks and chain-reorganization. Bitcoin forks with much shorter average block times (compared to the 10/min per block BTC average) have far more many orphans. ...
Smart Kid's user avatar
  • 6,563
13 votes
Accepted

Longest block time and standard deviation

Yes an an exponential distribution can be used but it will require some assumptions: No propagation delays of block discoveries Constant difficulty Accurate time stamps With those assumptions and an ...
Smart Kid's user avatar
  • 6,563
13 votes
Accepted

What security risks are associated with accepting Instant Transactions?

The risk is that this transaction will not be included in a block, ever, and thus never pays the merchant. The risk are the same as with Bitcoin, since Monero uses the same type of PoW system, so you ...
user36303's user avatar
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13 votes

Why was the block time changed from 1 to 2 minutes?

Current chain use is low, and many blocks are empty. Every empty block adds close to 300 bytes, and outputs from the block reward. After some discussion, it was agreed that the block time could be ...
user36303's user avatar
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10 votes
Accepted

Can Monero ever have a 10 sec. block-time?

I don't think so, and I'm not sure it would work out long term for ethereum either, although they plan to switch to proof-of-stake and implement sharding, both of which would possibly help. Monero ...
jwinterm's user avatar
  • 4,403
9 votes

What would be reasons to further increase block time?

If orphan levels increased or were above some tolerable threshold, an increase in block time would help alleviate the situation. This answer to a question about unlocked balances explains Monero's ...
revler1082's user avatar
  • 2,501
9 votes
Accepted

Will 2 minute block times discourage retail merchant adoption?

Actually, instant (well, speed of information) payment channels are possible with monero, even now (no protocol changes to monero necessary). First we will just start with one way payment channels. ...
Christopher King's user avatar
8 votes
Accepted

How does block time depend on number of transactions and block size?

Right now, it's basically a 1:1 relationship in the long term for a very basic reason. According to moneroblocks.info, there have been roughly 8100 transactions in the past week. Since there are 10080 ...
bigreddmachine's user avatar
8 votes

When did Monero switch to 2 minute blocks?

The change occured at hard fork 2, on block 1009827 (see the table near the top of src/cryptonote_core/blockchain.cpp). This was in march 2016.
user36303's user avatar
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8 votes
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What would be reasons to further increase block time?

What would be good reasons to further increase block time in the future? A couple good reasons would include if pools were experiencing a lot of orphaned blocks or if blocks were routinely empty. ...
bigreddmachine's user avatar
7 votes

Ghost protocol for Monero?

Pretty much anything could be done. I'd been thinking about a block tree, where you'd have geographically [1] close miners mining at a low difficulty and low block time, and making their own quick ...
user36303's user avatar
  • 34.8k
7 votes
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When did Monero switch to 2 minute blocks?

The change was introduced with the Monero v0.9.0 "Hydrogen Helix" release on the 1st of Jan, 2016 however it did not take effect until the 20th of March, 2016 at block 1009827 as explained by user3603....
seek adventure's user avatar
4 votes

How many hashes are needed to solve a Monero block of difficulty 1?

One Monero block is (1 << 21) / 16 [Source (Lines 40, 43 and 90): https://github.com/monero-project/monero/blob/master/src/crypto/slow-hash.c#L40 ]. The Monero block reward = (M - A) * 2-20 * ...
Rob's user avatar
  • 356
3 votes
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Early Monero usage compared to Bitcoin

The "last month" stats from http://moneroblocks.info/stats shows 0.67 transactions per block on average, which equates to about 0.3 transactions a minute, since Monero has had two minute blocks for a ...
user36303's user avatar
  • 34.8k
1 vote

How many hashes are needed to solve a Monero block of difficulty 1?

Answering your actual questions: How many hashes are needed to solve a Monero block of difficulty 1? ... Or, more simply, the average number of hashes (total, across the whole network) required to ...
jtgrassie's user avatar
  • 19.2k
1 vote

How many hashes are needed to solve a Monero block of difficulty 1?

According to Minergate: Reward = ((hashrate * block_reward) / current_difficulty) * (1 - pool_fee) * 3600 ...where does the 3600 come from? Does anyone know what this formula means or how to use it?...
Matt_B's user avatar
  • 19
1 vote

How does block time depend on number of transactions and block size?

I think you would need a larger sampling than 50 blocks to see if that pattern is true. There are many patterns that I've "seen" in Monero, but they've just turned out to be anomalies.
Ginger Ale's user avatar
  • 5,676

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