Bitcoin Forum
April 26, 2018, 03:53:44 PM *
News: Latest stable version of Bitcoin Core: 0.16.0  [Torrent]. (New!)
 
   Home   Help Search Donate Login Register  
Pages: [1]
  Print  
Author Topic: Timed Retarget  (Read 957 times)
Gamesfreak13563
Full Member
***
Offline Offline

Activity: 126
Merit: 100



View Profile
May 11, 2013, 05:25:13 AM
 #1

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?
Advertised sites are not endorsed by the Bitcoin Forum. They may be unsafe, untrustworthy, or illegal in your jurisdiction. Advertise here.
1524758024
Hero Member
*
Offline Offline

Posts: 1524758024

View Profile Personal Message (Offline)

Ignore
1524758024
Reply with quote  #2

1524758024
Report to moderator
1524758024
Hero Member
*
Offline Offline

Posts: 1524758024

View Profile Personal Message (Offline)

Ignore
1524758024
Reply with quote  #2

1524758024
Report to moderator
TradeFortress
VIP
Legendary
*
Offline Offline

Activity: 910
Merit: 1000


View Profile
May 11, 2013, 05:25:45 AM
 #2

That's how it works on testnet. IIRC difficulty goes back to 1 after X hours.
Gamesfreak13563
Full Member
***
Offline Offline

Activity: 126
Merit: 100



View Profile
May 11, 2013, 05:26:56 AM
 #3

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.
mr_right
Newbie
*
Offline Offline

Activity: 28
Merit: 0


View Profile
May 11, 2013, 05:28:57 AM
 #4

20 min
oroqen
Sr. Member
****
Offline Offline

Activity: 280
Merit: 250



View Profile
May 11, 2013, 05:36:02 AM
 #5

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
DeathAndTaxes
Donator
Legendary
*
Offline Offline

Activity: 1218
Merit: 1000


Gerald Davis


View Profile
May 11, 2013, 05:39:16 AM
 #6

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.
TradeFortress
VIP
Legendary
*
Offline Offline

Activity: 910
Merit: 1000


View Profile
May 11, 2013, 05:41:10 AM
 #7

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.
VelvetLeaf
Member
**
Offline Offline

Activity: 98
Merit: 10


View Profile
May 11, 2013, 05:50:37 AM
 #8

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

BTC : 1GN81dxzxyFPQsyAtdocXr5S9Mcg4wcfFG
LTC : LgmYvXsYXc4xdjsMKXJWqtagxVvioK6iaw
FC : 6dpSnKMtttUUYzaRu1EB7Lu18PBRVHU3V7
Pages: [1]
  Print  
 
Jump to:  

Sponsored by , a Bitcoin-accepting VPN.
Powered by MySQL Powered by PHP Powered by SMF 1.1.19 | SMF © 2006-2009, Simple Machines Valid XHTML 1.0! Valid CSS!