Timed Retarget | Bitcointalksearch.org

VelvetLeaf

member

Activity: 98

Merit: 10

Quote from: DeathAndTaxes on May 11, 2013, 01:39:16 AM

Who's time? Time in a decentralized network isn't deterministic.

Say x minutes pass so some nodes lower difficulty and one finds a block however due to differences in clocks some nodes believe it has been < x minutes.

HARD FORK TIME. Some nodes believe the lower difficulty block is valid and some believe it isn't. There is no resolution possible.

Hard fork time ?

https://en.wikipedia.org/wiki/Year_2000_problem
http://en.wikipedia.org/wiki/Year_2038_problem

🏰 TradeFortress 🏰

vip

Activity: 1316

Merit: 1043

👻

Quote from: DeathAndTaxes on May 11, 2013, 01:39:16 AM

Who's time? Time in a decentralized network isn't deterministic.

Say x minutes pass so some nodes lower difficulty and one finds a block however due to differences in clocks some nodes believe it has been < x minutes.

HARD FORK TIME. Some nodes believe the lower difficulty block is valid and some believe it isn't. There is no resolution possible.

Bitcoin already has the concept of time. I think there is a 1440 minute time acceptance window.

DeathAndTaxes

donator

Activity: 1218

Merit: 1079

Gerald Davis

Who's time? Time in a decentralized network isn't deterministic.

Say x minutes pass so some nodes lower difficulty and one finds a block however due to differences in clocks some nodes believe it has been < x minutes.

HARD FORK TIME. Some nodes believe the lower difficulty block is valid and some believe it isn't. There is no resolution possible.

oroqen

sr. member

Activity: 280

Merit: 250

Quote from: Gamesfreak13563 on May 11, 2013, 01:25:13 AM

Why don't Altcoins have a timer that ticks down? If blocks aren't solved after 150-200% target time, it immediately lowers difficulty some arbitrary percentage.

It seems like a major weakness. Imagine a power grid failure and most miners in North America can't mine. Will the rest of the world have to just sit there while they cant have their speedy transactions?

I'd be more worried about the nukes/*insert any apocalypse here* used to knock out that many power grids across NA

mr_right

newbie

Activity: 28

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20 min

Gamesfreak13563

full member

Activity: 126

Merit: 100

Quote from: 🏰 TradeFortress 🏰 on May 11, 2013, 01:25:45 AM

That's how it works on testnet. IIRC difficulty goes back to 1 after X hours.

I think it should be more gradual, not an immediate drop to one.

🏰 TradeFortress 🏰

vip

Activity: 1316

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That's how it works on testnet. IIRC difficulty goes back to 1 after X hours.

Gamesfreak13563

full member

Activity: 126

Merit: 100

Why don't Altcoins have a timer that ticks down? If blocks aren't solved after 150-200% target time, it immediately lowers difficulty some arbitrary percentage.

It seems like a major weakness. Imagine a power grid failure and most miners in North America can't mine. Will the rest of the world have to just sit there while they cant have their speedy transactions?

Topic: Timed Retarget (Read 1018 times)